5660 lines
180 KiB
C
5660 lines
180 KiB
C
/*
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** 2004 May 22
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**
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** The author disclaims copyright to this source code. In place of
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** a legal notice, here is a blessing:
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**
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** May you do good and not evil.
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** May you find forgiveness for yourself and forgive others.
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** May you share freely, never taking more than you give.
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**
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******************************************************************************
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**
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** This file contains code that is specific to Windows.
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*/
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#include "sqliteInt.h"
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#if SQLITE_OS_WIN /* This file is used for Windows only */
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/*
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** Include code that is common to all os_*.c files
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*/
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#include "os_common.h"
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/*
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** Include the header file for the Windows VFS.
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*/
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#include "os_win.h"
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/*
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** Compiling and using WAL mode requires several APIs that are only
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** available in Windows platforms based on the NT kernel.
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*/
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#if !SQLITE_OS_WINNT && !defined(SQLITE_OMIT_WAL)
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# error "WAL mode requires support from the Windows NT kernel, compile\
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with SQLITE_OMIT_WAL."
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#endif
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#if !SQLITE_OS_WINNT && SQLITE_MAX_MMAP_SIZE>0
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# error "Memory mapped files require support from the Windows NT kernel,\
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compile with SQLITE_MAX_MMAP_SIZE=0."
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#endif
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/*
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** Are most of the Win32 ANSI APIs available (i.e. with certain exceptions
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** based on the sub-platform)?
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*/
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#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && !defined(SQLITE_WIN32_NO_ANSI)
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# define SQLITE_WIN32_HAS_ANSI
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#endif
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/*
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** Are most of the Win32 Unicode APIs available (i.e. with certain exceptions
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** based on the sub-platform)?
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*/
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#if (SQLITE_OS_WINCE || SQLITE_OS_WINNT || SQLITE_OS_WINRT) && \
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!defined(SQLITE_WIN32_NO_WIDE)
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# define SQLITE_WIN32_HAS_WIDE
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#endif
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/*
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** Make sure at least one set of Win32 APIs is available.
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*/
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#if !defined(SQLITE_WIN32_HAS_ANSI) && !defined(SQLITE_WIN32_HAS_WIDE)
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# error "At least one of SQLITE_WIN32_HAS_ANSI and SQLITE_WIN32_HAS_WIDE\
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must be defined."
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#endif
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/*
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** Define the required Windows SDK version constants if they are not
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** already available.
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*/
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#ifndef NTDDI_WIN8
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# define NTDDI_WIN8 0x06020000
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#endif
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#ifndef NTDDI_WINBLUE
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# define NTDDI_WINBLUE 0x06030000
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#endif
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#ifndef NTDDI_WINTHRESHOLD
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# define NTDDI_WINTHRESHOLD 0x06040000
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#endif
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/*
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** Check to see if the GetVersionEx[AW] functions are deprecated on the
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** target system. GetVersionEx was first deprecated in Win8.1.
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*/
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#ifndef SQLITE_WIN32_GETVERSIONEX
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# if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WINBLUE
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# define SQLITE_WIN32_GETVERSIONEX 0 /* GetVersionEx() is deprecated */
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# else
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# define SQLITE_WIN32_GETVERSIONEX 1 /* GetVersionEx() is current */
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# endif
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#endif
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/*
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** Check to see if the CreateFileMappingA function is supported on the
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** target system. It is unavailable when using "mincore.lib" on Win10.
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** When compiling for Windows 10, always assume "mincore.lib" is in use.
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*/
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#ifndef SQLITE_WIN32_CREATEFILEMAPPINGA
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# if defined(NTDDI_VERSION) && NTDDI_VERSION >= NTDDI_WINTHRESHOLD
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# define SQLITE_WIN32_CREATEFILEMAPPINGA 0
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# else
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# define SQLITE_WIN32_CREATEFILEMAPPINGA 1
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# endif
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#endif
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/*
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** This constant should already be defined (in the "WinDef.h" SDK file).
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*/
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#ifndef MAX_PATH
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# define MAX_PATH (260)
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#endif
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/*
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** Maximum pathname length (in chars) for Win32. This should normally be
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** MAX_PATH.
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*/
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#ifndef SQLITE_WIN32_MAX_PATH_CHARS
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# define SQLITE_WIN32_MAX_PATH_CHARS (MAX_PATH)
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#endif
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/*
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** This constant should already be defined (in the "WinNT.h" SDK file).
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*/
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#ifndef UNICODE_STRING_MAX_CHARS
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# define UNICODE_STRING_MAX_CHARS (32767)
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#endif
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/*
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** Maximum pathname length (in chars) for WinNT. This should normally be
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** UNICODE_STRING_MAX_CHARS.
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*/
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#ifndef SQLITE_WINNT_MAX_PATH_CHARS
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# define SQLITE_WINNT_MAX_PATH_CHARS (UNICODE_STRING_MAX_CHARS)
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#endif
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/*
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** Maximum pathname length (in bytes) for Win32. The MAX_PATH macro is in
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** characters, so we allocate 4 bytes per character assuming worst-case of
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** 4-bytes-per-character for UTF8.
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*/
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#ifndef SQLITE_WIN32_MAX_PATH_BYTES
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# define SQLITE_WIN32_MAX_PATH_BYTES (SQLITE_WIN32_MAX_PATH_CHARS*4)
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#endif
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/*
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** Maximum pathname length (in bytes) for WinNT. This should normally be
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** UNICODE_STRING_MAX_CHARS * sizeof(WCHAR).
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*/
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#ifndef SQLITE_WINNT_MAX_PATH_BYTES
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# define SQLITE_WINNT_MAX_PATH_BYTES \
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(sizeof(WCHAR) * SQLITE_WINNT_MAX_PATH_CHARS)
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#endif
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/*
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** Maximum error message length (in chars) for WinRT.
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*/
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#ifndef SQLITE_WIN32_MAX_ERRMSG_CHARS
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# define SQLITE_WIN32_MAX_ERRMSG_CHARS (1024)
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#endif
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/*
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** Returns non-zero if the character should be treated as a directory
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** separator.
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*/
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#ifndef winIsDirSep
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# define winIsDirSep(a) (((a) == '/') || ((a) == '\\'))
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#endif
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/*
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** This macro is used when a local variable is set to a value that is
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** [sometimes] not used by the code (e.g. via conditional compilation).
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*/
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#ifndef UNUSED_VARIABLE_VALUE
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# define UNUSED_VARIABLE_VALUE(x) (void)(x)
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#endif
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/*
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** Returns the character that should be used as the directory separator.
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*/
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#ifndef winGetDirSep
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# define winGetDirSep() '\\'
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#endif
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/*
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** Do we need to manually define the Win32 file mapping APIs for use with WAL
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** mode or memory mapped files (e.g. these APIs are available in the Windows
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** CE SDK; however, they are not present in the header file)?
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*/
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#if SQLITE_WIN32_FILEMAPPING_API && \
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(!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
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/*
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** Two of the file mapping APIs are different under WinRT. Figure out which
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** set we need.
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*/
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#if SQLITE_OS_WINRT
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WINBASEAPI HANDLE WINAPI CreateFileMappingFromApp(HANDLE, \
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LPSECURITY_ATTRIBUTES, ULONG, ULONG64, LPCWSTR);
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WINBASEAPI LPVOID WINAPI MapViewOfFileFromApp(HANDLE, ULONG, ULONG64, SIZE_T);
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#else
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#if defined(SQLITE_WIN32_HAS_ANSI)
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WINBASEAPI HANDLE WINAPI CreateFileMappingA(HANDLE, LPSECURITY_ATTRIBUTES, \
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DWORD, DWORD, DWORD, LPCSTR);
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#endif /* defined(SQLITE_WIN32_HAS_ANSI) */
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#if defined(SQLITE_WIN32_HAS_WIDE)
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WINBASEAPI HANDLE WINAPI CreateFileMappingW(HANDLE, LPSECURITY_ATTRIBUTES, \
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DWORD, DWORD, DWORD, LPCWSTR);
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#endif /* defined(SQLITE_WIN32_HAS_WIDE) */
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WINBASEAPI LPVOID WINAPI MapViewOfFile(HANDLE, DWORD, DWORD, DWORD, SIZE_T);
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#endif /* SQLITE_OS_WINRT */
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/*
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** These file mapping APIs are common to both Win32 and WinRT.
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*/
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WINBASEAPI BOOL WINAPI FlushViewOfFile(LPCVOID, SIZE_T);
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WINBASEAPI BOOL WINAPI UnmapViewOfFile(LPCVOID);
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#endif /* SQLITE_WIN32_FILEMAPPING_API */
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/*
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** Some Microsoft compilers lack this definition.
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*/
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#ifndef INVALID_FILE_ATTRIBUTES
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# define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
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#endif
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#ifndef FILE_FLAG_MASK
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# define FILE_FLAG_MASK (0xFF3C0000)
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#endif
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#ifndef FILE_ATTRIBUTE_MASK
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# define FILE_ATTRIBUTE_MASK (0x0003FFF7)
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#endif
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#ifndef SQLITE_OMIT_WAL
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/* Forward references to structures used for WAL */
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typedef struct winShm winShm; /* A connection to shared-memory */
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typedef struct winShmNode winShmNode; /* A region of shared-memory */
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#endif
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/*
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** WinCE lacks native support for file locking so we have to fake it
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** with some code of our own.
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*/
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#if SQLITE_OS_WINCE
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typedef struct winceLock {
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int nReaders; /* Number of reader locks obtained */
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BOOL bPending; /* Indicates a pending lock has been obtained */
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BOOL bReserved; /* Indicates a reserved lock has been obtained */
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BOOL bExclusive; /* Indicates an exclusive lock has been obtained */
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} winceLock;
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#endif
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/*
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** The winFile structure is a subclass of sqlite3_file* specific to the win32
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** portability layer.
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*/
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typedef struct winFile winFile;
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struct winFile {
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const sqlite3_io_methods *pMethod; /*** Must be first ***/
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sqlite3_vfs *pVfs; /* The VFS used to open this file */
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HANDLE h; /* Handle for accessing the file */
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u8 locktype; /* Type of lock currently held on this file */
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short sharedLockByte; /* Randomly chosen byte used as a shared lock */
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u8 ctrlFlags; /* Flags. See WINFILE_* below */
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DWORD lastErrno; /* The Windows errno from the last I/O error */
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#ifndef SQLITE_OMIT_WAL
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winShm *pShm; /* Instance of shared memory on this file */
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#endif
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const char *zPath; /* Full pathname of this file */
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int szChunk; /* Chunk size configured by FCNTL_CHUNK_SIZE */
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#if SQLITE_OS_WINCE
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LPWSTR zDeleteOnClose; /* Name of file to delete when closing */
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HANDLE hMutex; /* Mutex used to control access to shared lock */
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HANDLE hShared; /* Shared memory segment used for locking */
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winceLock local; /* Locks obtained by this instance of winFile */
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winceLock *shared; /* Global shared lock memory for the file */
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#endif
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#if SQLITE_MAX_MMAP_SIZE>0
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int nFetchOut; /* Number of outstanding xFetch references */
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HANDLE hMap; /* Handle for accessing memory mapping */
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void *pMapRegion; /* Area memory mapped */
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sqlite3_int64 mmapSize; /* Usable size of mapped region */
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sqlite3_int64 mmapSizeActual; /* Actual size of mapped region */
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sqlite3_int64 mmapSizeMax; /* Configured FCNTL_MMAP_SIZE value */
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#endif
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};
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/*
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** Allowed values for winFile.ctrlFlags
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*/
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#define WINFILE_RDONLY 0x02 /* Connection is read only */
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#define WINFILE_PERSIST_WAL 0x04 /* Persistent WAL mode */
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#define WINFILE_PSOW 0x10 /* SQLITE_IOCAP_POWERSAFE_OVERWRITE */
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/*
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* The size of the buffer used by sqlite3_win32_write_debug().
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*/
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#ifndef SQLITE_WIN32_DBG_BUF_SIZE
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# define SQLITE_WIN32_DBG_BUF_SIZE ((int)(4096-sizeof(DWORD)))
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#endif
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/*
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* The value used with sqlite3_win32_set_directory() to specify that
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* the data directory should be changed.
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*/
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#ifndef SQLITE_WIN32_DATA_DIRECTORY_TYPE
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# define SQLITE_WIN32_DATA_DIRECTORY_TYPE (1)
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#endif
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/*
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* The value used with sqlite3_win32_set_directory() to specify that
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* the temporary directory should be changed.
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*/
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#ifndef SQLITE_WIN32_TEMP_DIRECTORY_TYPE
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# define SQLITE_WIN32_TEMP_DIRECTORY_TYPE (2)
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#endif
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/*
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* If compiled with SQLITE_WIN32_MALLOC on Windows, we will use the
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* various Win32 API heap functions instead of our own.
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*/
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#ifdef SQLITE_WIN32_MALLOC
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/*
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* If this is non-zero, an isolated heap will be created by the native Win32
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* allocator subsystem; otherwise, the default process heap will be used. This
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* setting has no effect when compiling for WinRT. By default, this is enabled
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* and an isolated heap will be created to store all allocated data.
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*
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******************************************************************************
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* WARNING: It is important to note that when this setting is non-zero and the
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* winMemShutdown function is called (e.g. by the sqlite3_shutdown
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* function), all data that was allocated using the isolated heap will
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* be freed immediately and any attempt to access any of that freed
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* data will almost certainly result in an immediate access violation.
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******************************************************************************
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*/
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#ifndef SQLITE_WIN32_HEAP_CREATE
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# define SQLITE_WIN32_HEAP_CREATE (TRUE)
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#endif
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/*
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* The initial size of the Win32-specific heap. This value may be zero.
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*/
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#ifndef SQLITE_WIN32_HEAP_INIT_SIZE
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# define SQLITE_WIN32_HEAP_INIT_SIZE ((SQLITE_DEFAULT_CACHE_SIZE) * \
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(SQLITE_DEFAULT_PAGE_SIZE) + 4194304)
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#endif
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/*
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* The maximum size of the Win32-specific heap. This value may be zero.
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*/
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#ifndef SQLITE_WIN32_HEAP_MAX_SIZE
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# define SQLITE_WIN32_HEAP_MAX_SIZE (0)
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#endif
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/*
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* The extra flags to use in calls to the Win32 heap APIs. This value may be
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* zero for the default behavior.
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*/
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#ifndef SQLITE_WIN32_HEAP_FLAGS
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# define SQLITE_WIN32_HEAP_FLAGS (0)
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#endif
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/*
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** The winMemData structure stores information required by the Win32-specific
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** sqlite3_mem_methods implementation.
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*/
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typedef struct winMemData winMemData;
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struct winMemData {
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#ifndef NDEBUG
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u32 magic1; /* Magic number to detect structure corruption. */
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#endif
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HANDLE hHeap; /* The handle to our heap. */
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BOOL bOwned; /* Do we own the heap (i.e. destroy it on shutdown)? */
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#ifndef NDEBUG
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u32 magic2; /* Magic number to detect structure corruption. */
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#endif
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};
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#ifndef NDEBUG
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#define WINMEM_MAGIC1 0x42b2830b
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#define WINMEM_MAGIC2 0xbd4d7cf4
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#endif
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static struct winMemData win_mem_data = {
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#ifndef NDEBUG
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WINMEM_MAGIC1,
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#endif
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NULL, FALSE
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#ifndef NDEBUG
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,WINMEM_MAGIC2
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#endif
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};
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#ifndef NDEBUG
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#define winMemAssertMagic1() assert( win_mem_data.magic1==WINMEM_MAGIC1 )
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#define winMemAssertMagic2() assert( win_mem_data.magic2==WINMEM_MAGIC2 )
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#define winMemAssertMagic() winMemAssertMagic1(); winMemAssertMagic2();
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#else
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#define winMemAssertMagic()
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#endif
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#define winMemGetDataPtr() &win_mem_data
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#define winMemGetHeap() win_mem_data.hHeap
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#define winMemGetOwned() win_mem_data.bOwned
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static void *winMemMalloc(int nBytes);
|
|
static void winMemFree(void *pPrior);
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static void *winMemRealloc(void *pPrior, int nBytes);
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static int winMemSize(void *p);
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static int winMemRoundup(int n);
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static int winMemInit(void *pAppData);
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static void winMemShutdown(void *pAppData);
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const sqlite3_mem_methods *sqlite3MemGetWin32(void);
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#endif /* SQLITE_WIN32_MALLOC */
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|
|
/*
|
|
** The following variable is (normally) set once and never changes
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** thereafter. It records whether the operating system is Win9x
|
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** or WinNT.
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|
**
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** 0: Operating system unknown.
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|
** 1: Operating system is Win9x.
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** 2: Operating system is WinNT.
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|
**
|
|
** In order to facilitate testing on a WinNT system, the test fixture
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** can manually set this value to 1 to emulate Win98 behavior.
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|
*/
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|
#ifdef SQLITE_TEST
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LONG SQLITE_WIN32_VOLATILE sqlite3_os_type = 0;
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|
#else
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static LONG SQLITE_WIN32_VOLATILE sqlite3_os_type = 0;
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|
#endif
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|
|
#ifndef SYSCALL
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|
# define SYSCALL sqlite3_syscall_ptr
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|
#endif
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/*
|
|
** This function is not available on Windows CE or WinRT.
|
|
*/
|
|
|
|
#if SQLITE_OS_WINCE || SQLITE_OS_WINRT
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|
# define osAreFileApisANSI() 1
|
|
#endif
|
|
|
|
/*
|
|
** Many system calls are accessed through pointer-to-functions so that
|
|
** they may be overridden at runtime to facilitate fault injection during
|
|
** testing and sandboxing. The following array holds the names and pointers
|
|
** to all overrideable system calls.
|
|
*/
|
|
static struct win_syscall {
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|
const char *zName; /* Name of the system call */
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|
sqlite3_syscall_ptr pCurrent; /* Current value of the system call */
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|
sqlite3_syscall_ptr pDefault; /* Default value */
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} aSyscall[] = {
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#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
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{ "AreFileApisANSI", (SYSCALL)AreFileApisANSI, 0 },
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#else
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{ "AreFileApisANSI", (SYSCALL)0, 0 },
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#endif
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#ifndef osAreFileApisANSI
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#define osAreFileApisANSI ((BOOL(WINAPI*)(VOID))aSyscall[0].pCurrent)
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#endif
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#if SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
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{ "CharLowerW", (SYSCALL)CharLowerW, 0 },
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#else
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{ "CharLowerW", (SYSCALL)0, 0 },
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#endif
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#define osCharLowerW ((LPWSTR(WINAPI*)(LPWSTR))aSyscall[1].pCurrent)
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#if SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_WIDE)
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{ "CharUpperW", (SYSCALL)CharUpperW, 0 },
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|
#else
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{ "CharUpperW", (SYSCALL)0, 0 },
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#endif
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#define osCharUpperW ((LPWSTR(WINAPI*)(LPWSTR))aSyscall[2].pCurrent)
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{ "CloseHandle", (SYSCALL)CloseHandle, 0 },
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|
|
|
#define osCloseHandle ((BOOL(WINAPI*)(HANDLE))aSyscall[3].pCurrent)
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|
|
|
#if defined(SQLITE_WIN32_HAS_ANSI)
|
|
{ "CreateFileA", (SYSCALL)CreateFileA, 0 },
|
|
#else
|
|
{ "CreateFileA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osCreateFileA ((HANDLE(WINAPI*)(LPCSTR,DWORD,DWORD, \
|
|
LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[4].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "CreateFileW", (SYSCALL)CreateFileW, 0 },
|
|
#else
|
|
{ "CreateFileW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osCreateFileW ((HANDLE(WINAPI*)(LPCWSTR,DWORD,DWORD, \
|
|
LPSECURITY_ATTRIBUTES,DWORD,DWORD,HANDLE))aSyscall[5].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_ANSI) && \
|
|
(!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0) && \
|
|
SQLITE_WIN32_CREATEFILEMAPPINGA
|
|
{ "CreateFileMappingA", (SYSCALL)CreateFileMappingA, 0 },
|
|
#else
|
|
{ "CreateFileMappingA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osCreateFileMappingA ((HANDLE(WINAPI*)(HANDLE,LPSECURITY_ATTRIBUTES, \
|
|
DWORD,DWORD,DWORD,LPCSTR))aSyscall[6].pCurrent)
|
|
|
|
#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \
|
|
(!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0))
|
|
{ "CreateFileMappingW", (SYSCALL)CreateFileMappingW, 0 },
|
|
#else
|
|
{ "CreateFileMappingW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osCreateFileMappingW ((HANDLE(WINAPI*)(HANDLE,LPSECURITY_ATTRIBUTES, \
|
|
DWORD,DWORD,DWORD,LPCWSTR))aSyscall[7].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "CreateMutexW", (SYSCALL)CreateMutexW, 0 },
|
|
#else
|
|
{ "CreateMutexW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osCreateMutexW ((HANDLE(WINAPI*)(LPSECURITY_ATTRIBUTES,BOOL, \
|
|
LPCWSTR))aSyscall[8].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_ANSI)
|
|
{ "DeleteFileA", (SYSCALL)DeleteFileA, 0 },
|
|
#else
|
|
{ "DeleteFileA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osDeleteFileA ((BOOL(WINAPI*)(LPCSTR))aSyscall[9].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "DeleteFileW", (SYSCALL)DeleteFileW, 0 },
|
|
#else
|
|
{ "DeleteFileW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osDeleteFileW ((BOOL(WINAPI*)(LPCWSTR))aSyscall[10].pCurrent)
|
|
|
|
#if SQLITE_OS_WINCE
|
|
{ "FileTimeToLocalFileTime", (SYSCALL)FileTimeToLocalFileTime, 0 },
|
|
#else
|
|
{ "FileTimeToLocalFileTime", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osFileTimeToLocalFileTime ((BOOL(WINAPI*)(CONST FILETIME*, \
|
|
LPFILETIME))aSyscall[11].pCurrent)
|
|
|
|
#if SQLITE_OS_WINCE
|
|
{ "FileTimeToSystemTime", (SYSCALL)FileTimeToSystemTime, 0 },
|
|
#else
|
|
{ "FileTimeToSystemTime", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osFileTimeToSystemTime ((BOOL(WINAPI*)(CONST FILETIME*, \
|
|
LPSYSTEMTIME))aSyscall[12].pCurrent)
|
|
|
|
{ "FlushFileBuffers", (SYSCALL)FlushFileBuffers, 0 },
|
|
|
|
#define osFlushFileBuffers ((BOOL(WINAPI*)(HANDLE))aSyscall[13].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_ANSI)
|
|
{ "FormatMessageA", (SYSCALL)FormatMessageA, 0 },
|
|
#else
|
|
{ "FormatMessageA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osFormatMessageA ((DWORD(WINAPI*)(DWORD,LPCVOID,DWORD,DWORD,LPSTR, \
|
|
DWORD,va_list*))aSyscall[14].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "FormatMessageW", (SYSCALL)FormatMessageW, 0 },
|
|
#else
|
|
{ "FormatMessageW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osFormatMessageW ((DWORD(WINAPI*)(DWORD,LPCVOID,DWORD,DWORD,LPWSTR, \
|
|
DWORD,va_list*))aSyscall[15].pCurrent)
|
|
|
|
#if !defined(SQLITE_OMIT_LOAD_EXTENSION)
|
|
{ "FreeLibrary", (SYSCALL)FreeLibrary, 0 },
|
|
#else
|
|
{ "FreeLibrary", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osFreeLibrary ((BOOL(WINAPI*)(HMODULE))aSyscall[16].pCurrent)
|
|
|
|
{ "GetCurrentProcessId", (SYSCALL)GetCurrentProcessId, 0 },
|
|
|
|
#define osGetCurrentProcessId ((DWORD(WINAPI*)(VOID))aSyscall[17].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_ANSI)
|
|
{ "GetDiskFreeSpaceA", (SYSCALL)GetDiskFreeSpaceA, 0 },
|
|
#else
|
|
{ "GetDiskFreeSpaceA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetDiskFreeSpaceA ((BOOL(WINAPI*)(LPCSTR,LPDWORD,LPDWORD,LPDWORD, \
|
|
LPDWORD))aSyscall[18].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "GetDiskFreeSpaceW", (SYSCALL)GetDiskFreeSpaceW, 0 },
|
|
#else
|
|
{ "GetDiskFreeSpaceW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetDiskFreeSpaceW ((BOOL(WINAPI*)(LPCWSTR,LPDWORD,LPDWORD,LPDWORD, \
|
|
LPDWORD))aSyscall[19].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_ANSI)
|
|
{ "GetFileAttributesA", (SYSCALL)GetFileAttributesA, 0 },
|
|
#else
|
|
{ "GetFileAttributesA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetFileAttributesA ((DWORD(WINAPI*)(LPCSTR))aSyscall[20].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "GetFileAttributesW", (SYSCALL)GetFileAttributesW, 0 },
|
|
#else
|
|
{ "GetFileAttributesW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetFileAttributesW ((DWORD(WINAPI*)(LPCWSTR))aSyscall[21].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "GetFileAttributesExW", (SYSCALL)GetFileAttributesExW, 0 },
|
|
#else
|
|
{ "GetFileAttributesExW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetFileAttributesExW ((BOOL(WINAPI*)(LPCWSTR,GET_FILEEX_INFO_LEVELS, \
|
|
LPVOID))aSyscall[22].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "GetFileSize", (SYSCALL)GetFileSize, 0 },
|
|
#else
|
|
{ "GetFileSize", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetFileSize ((DWORD(WINAPI*)(HANDLE,LPDWORD))aSyscall[23].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE && defined(SQLITE_WIN32_HAS_ANSI)
|
|
{ "GetFullPathNameA", (SYSCALL)GetFullPathNameA, 0 },
|
|
#else
|
|
{ "GetFullPathNameA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetFullPathNameA ((DWORD(WINAPI*)(LPCSTR,DWORD,LPSTR, \
|
|
LPSTR*))aSyscall[24].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "GetFullPathNameW", (SYSCALL)GetFullPathNameW, 0 },
|
|
#else
|
|
{ "GetFullPathNameW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetFullPathNameW ((DWORD(WINAPI*)(LPCWSTR,DWORD,LPWSTR, \
|
|
LPWSTR*))aSyscall[25].pCurrent)
|
|
|
|
{ "GetLastError", (SYSCALL)GetLastError, 0 },
|
|
|
|
#define osGetLastError ((DWORD(WINAPI*)(VOID))aSyscall[26].pCurrent)
|
|
|
|
#if !defined(SQLITE_OMIT_LOAD_EXTENSION)
|
|
#if SQLITE_OS_WINCE
|
|
/* The GetProcAddressA() routine is only available on Windows CE. */
|
|
{ "GetProcAddressA", (SYSCALL)GetProcAddressA, 0 },
|
|
#else
|
|
/* All other Windows platforms expect GetProcAddress() to take
|
|
** an ANSI string regardless of the _UNICODE setting */
|
|
{ "GetProcAddressA", (SYSCALL)GetProcAddress, 0 },
|
|
#endif
|
|
#else
|
|
{ "GetProcAddressA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetProcAddressA ((FARPROC(WINAPI*)(HMODULE, \
|
|
LPCSTR))aSyscall[27].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "GetSystemInfo", (SYSCALL)GetSystemInfo, 0 },
|
|
#else
|
|
{ "GetSystemInfo", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetSystemInfo ((VOID(WINAPI*)(LPSYSTEM_INFO))aSyscall[28].pCurrent)
|
|
|
|
{ "GetSystemTime", (SYSCALL)GetSystemTime, 0 },
|
|
|
|
#define osGetSystemTime ((VOID(WINAPI*)(LPSYSTEMTIME))aSyscall[29].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE
|
|
{ "GetSystemTimeAsFileTime", (SYSCALL)GetSystemTimeAsFileTime, 0 },
|
|
#else
|
|
{ "GetSystemTimeAsFileTime", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetSystemTimeAsFileTime ((VOID(WINAPI*)( \
|
|
LPFILETIME))aSyscall[30].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_ANSI)
|
|
{ "GetTempPathA", (SYSCALL)GetTempPathA, 0 },
|
|
#else
|
|
{ "GetTempPathA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetTempPathA ((DWORD(WINAPI*)(DWORD,LPSTR))aSyscall[31].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "GetTempPathW", (SYSCALL)GetTempPathW, 0 },
|
|
#else
|
|
{ "GetTempPathW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetTempPathW ((DWORD(WINAPI*)(DWORD,LPWSTR))aSyscall[32].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "GetTickCount", (SYSCALL)GetTickCount, 0 },
|
|
#else
|
|
{ "GetTickCount", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetTickCount ((DWORD(WINAPI*)(VOID))aSyscall[33].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_GETVERSIONEX
|
|
{ "GetVersionExA", (SYSCALL)GetVersionExA, 0 },
|
|
#else
|
|
{ "GetVersionExA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetVersionExA ((BOOL(WINAPI*)( \
|
|
LPOSVERSIONINFOA))aSyscall[34].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \
|
|
SQLITE_WIN32_GETVERSIONEX
|
|
{ "GetVersionExW", (SYSCALL)GetVersionExW, 0 },
|
|
#else
|
|
{ "GetVersionExW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetVersionExW ((BOOL(WINAPI*)( \
|
|
LPOSVERSIONINFOW))aSyscall[35].pCurrent)
|
|
|
|
{ "HeapAlloc", (SYSCALL)HeapAlloc, 0 },
|
|
|
|
#define osHeapAlloc ((LPVOID(WINAPI*)(HANDLE,DWORD, \
|
|
SIZE_T))aSyscall[36].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "HeapCreate", (SYSCALL)HeapCreate, 0 },
|
|
#else
|
|
{ "HeapCreate", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osHeapCreate ((HANDLE(WINAPI*)(DWORD,SIZE_T, \
|
|
SIZE_T))aSyscall[37].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "HeapDestroy", (SYSCALL)HeapDestroy, 0 },
|
|
#else
|
|
{ "HeapDestroy", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osHeapDestroy ((BOOL(WINAPI*)(HANDLE))aSyscall[38].pCurrent)
|
|
|
|
{ "HeapFree", (SYSCALL)HeapFree, 0 },
|
|
|
|
#define osHeapFree ((BOOL(WINAPI*)(HANDLE,DWORD,LPVOID))aSyscall[39].pCurrent)
|
|
|
|
{ "HeapReAlloc", (SYSCALL)HeapReAlloc, 0 },
|
|
|
|
#define osHeapReAlloc ((LPVOID(WINAPI*)(HANDLE,DWORD,LPVOID, \
|
|
SIZE_T))aSyscall[40].pCurrent)
|
|
|
|
{ "HeapSize", (SYSCALL)HeapSize, 0 },
|
|
|
|
#define osHeapSize ((SIZE_T(WINAPI*)(HANDLE,DWORD, \
|
|
LPCVOID))aSyscall[41].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "HeapValidate", (SYSCALL)HeapValidate, 0 },
|
|
#else
|
|
{ "HeapValidate", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osHeapValidate ((BOOL(WINAPI*)(HANDLE,DWORD, \
|
|
LPCVOID))aSyscall[42].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
|
|
{ "HeapCompact", (SYSCALL)HeapCompact, 0 },
|
|
#else
|
|
{ "HeapCompact", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osHeapCompact ((UINT(WINAPI*)(HANDLE,DWORD))aSyscall[43].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_ANSI) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
|
|
{ "LoadLibraryA", (SYSCALL)LoadLibraryA, 0 },
|
|
#else
|
|
{ "LoadLibraryA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osLoadLibraryA ((HMODULE(WINAPI*)(LPCSTR))aSyscall[44].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_HAS_WIDE) && \
|
|
!defined(SQLITE_OMIT_LOAD_EXTENSION)
|
|
{ "LoadLibraryW", (SYSCALL)LoadLibraryW, 0 },
|
|
#else
|
|
{ "LoadLibraryW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osLoadLibraryW ((HMODULE(WINAPI*)(LPCWSTR))aSyscall[45].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "LocalFree", (SYSCALL)LocalFree, 0 },
|
|
#else
|
|
{ "LocalFree", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osLocalFree ((HLOCAL(WINAPI*)(HLOCAL))aSyscall[46].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
|
|
{ "LockFile", (SYSCALL)LockFile, 0 },
|
|
#else
|
|
{ "LockFile", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#ifndef osLockFile
|
|
#define osLockFile ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
|
|
DWORD))aSyscall[47].pCurrent)
|
|
#endif
|
|
|
|
#if !SQLITE_OS_WINCE
|
|
{ "LockFileEx", (SYSCALL)LockFileEx, 0 },
|
|
#else
|
|
{ "LockFileEx", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#ifndef osLockFileEx
|
|
#define osLockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD,DWORD, \
|
|
LPOVERLAPPED))aSyscall[48].pCurrent)
|
|
#endif
|
|
|
|
#if SQLITE_OS_WINCE || (!SQLITE_OS_WINRT && \
|
|
(!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0))
|
|
{ "MapViewOfFile", (SYSCALL)MapViewOfFile, 0 },
|
|
#else
|
|
{ "MapViewOfFile", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osMapViewOfFile ((LPVOID(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
|
|
SIZE_T))aSyscall[49].pCurrent)
|
|
|
|
{ "MultiByteToWideChar", (SYSCALL)MultiByteToWideChar, 0 },
|
|
|
|
#define osMultiByteToWideChar ((int(WINAPI*)(UINT,DWORD,LPCSTR,int,LPWSTR, \
|
|
int))aSyscall[50].pCurrent)
|
|
|
|
{ "QueryPerformanceCounter", (SYSCALL)QueryPerformanceCounter, 0 },
|
|
|
|
#define osQueryPerformanceCounter ((BOOL(WINAPI*)( \
|
|
LARGE_INTEGER*))aSyscall[51].pCurrent)
|
|
|
|
{ "ReadFile", (SYSCALL)ReadFile, 0 },
|
|
|
|
#define osReadFile ((BOOL(WINAPI*)(HANDLE,LPVOID,DWORD,LPDWORD, \
|
|
LPOVERLAPPED))aSyscall[52].pCurrent)
|
|
|
|
{ "SetEndOfFile", (SYSCALL)SetEndOfFile, 0 },
|
|
|
|
#define osSetEndOfFile ((BOOL(WINAPI*)(HANDLE))aSyscall[53].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "SetFilePointer", (SYSCALL)SetFilePointer, 0 },
|
|
#else
|
|
{ "SetFilePointer", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osSetFilePointer ((DWORD(WINAPI*)(HANDLE,LONG,PLONG, \
|
|
DWORD))aSyscall[54].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "Sleep", (SYSCALL)Sleep, 0 },
|
|
#else
|
|
{ "Sleep", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osSleep ((VOID(WINAPI*)(DWORD))aSyscall[55].pCurrent)
|
|
|
|
{ "SystemTimeToFileTime", (SYSCALL)SystemTimeToFileTime, 0 },
|
|
|
|
#define osSystemTimeToFileTime ((BOOL(WINAPI*)(CONST SYSTEMTIME*, \
|
|
LPFILETIME))aSyscall[56].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
|
|
{ "UnlockFile", (SYSCALL)UnlockFile, 0 },
|
|
#else
|
|
{ "UnlockFile", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#ifndef osUnlockFile
|
|
#define osUnlockFile ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
|
|
DWORD))aSyscall[57].pCurrent)
|
|
#endif
|
|
|
|
#if !SQLITE_OS_WINCE
|
|
{ "UnlockFileEx", (SYSCALL)UnlockFileEx, 0 },
|
|
#else
|
|
{ "UnlockFileEx", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osUnlockFileEx ((BOOL(WINAPI*)(HANDLE,DWORD,DWORD,DWORD, \
|
|
LPOVERLAPPED))aSyscall[58].pCurrent)
|
|
|
|
#if SQLITE_OS_WINCE || !defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0
|
|
{ "UnmapViewOfFile", (SYSCALL)UnmapViewOfFile, 0 },
|
|
#else
|
|
{ "UnmapViewOfFile", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osUnmapViewOfFile ((BOOL(WINAPI*)(LPCVOID))aSyscall[59].pCurrent)
|
|
|
|
{ "WideCharToMultiByte", (SYSCALL)WideCharToMultiByte, 0 },
|
|
|
|
#define osWideCharToMultiByte ((int(WINAPI*)(UINT,DWORD,LPCWSTR,int,LPSTR,int, \
|
|
LPCSTR,LPBOOL))aSyscall[60].pCurrent)
|
|
|
|
{ "WriteFile", (SYSCALL)WriteFile, 0 },
|
|
|
|
#define osWriteFile ((BOOL(WINAPI*)(HANDLE,LPCVOID,DWORD,LPDWORD, \
|
|
LPOVERLAPPED))aSyscall[61].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT
|
|
{ "CreateEventExW", (SYSCALL)CreateEventExW, 0 },
|
|
#else
|
|
{ "CreateEventExW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osCreateEventExW ((HANDLE(WINAPI*)(LPSECURITY_ATTRIBUTES,LPCWSTR, \
|
|
DWORD,DWORD))aSyscall[62].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINRT
|
|
{ "WaitForSingleObject", (SYSCALL)WaitForSingleObject, 0 },
|
|
#else
|
|
{ "WaitForSingleObject", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osWaitForSingleObject ((DWORD(WINAPI*)(HANDLE, \
|
|
DWORD))aSyscall[63].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE
|
|
{ "WaitForSingleObjectEx", (SYSCALL)WaitForSingleObjectEx, 0 },
|
|
#else
|
|
{ "WaitForSingleObjectEx", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osWaitForSingleObjectEx ((DWORD(WINAPI*)(HANDLE,DWORD, \
|
|
BOOL))aSyscall[64].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT
|
|
{ "SetFilePointerEx", (SYSCALL)SetFilePointerEx, 0 },
|
|
#else
|
|
{ "SetFilePointerEx", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osSetFilePointerEx ((BOOL(WINAPI*)(HANDLE,LARGE_INTEGER, \
|
|
PLARGE_INTEGER,DWORD))aSyscall[65].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT
|
|
{ "GetFileInformationByHandleEx", (SYSCALL)GetFileInformationByHandleEx, 0 },
|
|
#else
|
|
{ "GetFileInformationByHandleEx", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetFileInformationByHandleEx ((BOOL(WINAPI*)(HANDLE, \
|
|
FILE_INFO_BY_HANDLE_CLASS,LPVOID,DWORD))aSyscall[66].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
|
|
{ "MapViewOfFileFromApp", (SYSCALL)MapViewOfFileFromApp, 0 },
|
|
#else
|
|
{ "MapViewOfFileFromApp", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osMapViewOfFileFromApp ((LPVOID(WINAPI*)(HANDLE,ULONG,ULONG64, \
|
|
SIZE_T))aSyscall[67].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT
|
|
{ "CreateFile2", (SYSCALL)CreateFile2, 0 },
|
|
#else
|
|
{ "CreateFile2", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osCreateFile2 ((HANDLE(WINAPI*)(LPCWSTR,DWORD,DWORD,DWORD, \
|
|
LPCREATEFILE2_EXTENDED_PARAMETERS))aSyscall[68].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT && !defined(SQLITE_OMIT_LOAD_EXTENSION)
|
|
{ "LoadPackagedLibrary", (SYSCALL)LoadPackagedLibrary, 0 },
|
|
#else
|
|
{ "LoadPackagedLibrary", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osLoadPackagedLibrary ((HMODULE(WINAPI*)(LPCWSTR, \
|
|
DWORD))aSyscall[69].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT
|
|
{ "GetTickCount64", (SYSCALL)GetTickCount64, 0 },
|
|
#else
|
|
{ "GetTickCount64", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetTickCount64 ((ULONGLONG(WINAPI*)(VOID))aSyscall[70].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT
|
|
{ "GetNativeSystemInfo", (SYSCALL)GetNativeSystemInfo, 0 },
|
|
#else
|
|
{ "GetNativeSystemInfo", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osGetNativeSystemInfo ((VOID(WINAPI*)( \
|
|
LPSYSTEM_INFO))aSyscall[71].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_ANSI)
|
|
{ "OutputDebugStringA", (SYSCALL)OutputDebugStringA, 0 },
|
|
#else
|
|
{ "OutputDebugStringA", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osOutputDebugStringA ((VOID(WINAPI*)(LPCSTR))aSyscall[72].pCurrent)
|
|
|
|
#if defined(SQLITE_WIN32_HAS_WIDE)
|
|
{ "OutputDebugStringW", (SYSCALL)OutputDebugStringW, 0 },
|
|
#else
|
|
{ "OutputDebugStringW", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osOutputDebugStringW ((VOID(WINAPI*)(LPCWSTR))aSyscall[73].pCurrent)
|
|
|
|
{ "GetProcessHeap", (SYSCALL)GetProcessHeap, 0 },
|
|
|
|
#define osGetProcessHeap ((HANDLE(WINAPI*)(VOID))aSyscall[74].pCurrent)
|
|
|
|
#if SQLITE_OS_WINRT && (!defined(SQLITE_OMIT_WAL) || SQLITE_MAX_MMAP_SIZE>0)
|
|
{ "CreateFileMappingFromApp", (SYSCALL)CreateFileMappingFromApp, 0 },
|
|
#else
|
|
{ "CreateFileMappingFromApp", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osCreateFileMappingFromApp ((HANDLE(WINAPI*)(HANDLE, \
|
|
LPSECURITY_ATTRIBUTES,ULONG,ULONG64,LPCWSTR))aSyscall[75].pCurrent)
|
|
|
|
/*
|
|
** NOTE: On some sub-platforms, the InterlockedCompareExchange "function"
|
|
** is really just a macro that uses a compiler intrinsic (e.g. x64).
|
|
** So do not try to make this is into a redefinable interface.
|
|
*/
|
|
#if defined(InterlockedCompareExchange)
|
|
{ "InterlockedCompareExchange", (SYSCALL)0, 0 },
|
|
|
|
#define osInterlockedCompareExchange InterlockedCompareExchange
|
|
#else
|
|
{ "InterlockedCompareExchange", (SYSCALL)InterlockedCompareExchange, 0 },
|
|
|
|
#define osInterlockedCompareExchange ((LONG(WINAPI*)(LONG \
|
|
SQLITE_WIN32_VOLATILE*, LONG,LONG))aSyscall[76].pCurrent)
|
|
#endif /* defined(InterlockedCompareExchange) */
|
|
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
|
|
{ "UuidCreate", (SYSCALL)UuidCreate, 0 },
|
|
#else
|
|
{ "UuidCreate", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osUuidCreate ((RPC_STATUS(RPC_ENTRY*)(UUID*))aSyscall[77].pCurrent)
|
|
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
|
|
{ "UuidCreateSequential", (SYSCALL)UuidCreateSequential, 0 },
|
|
#else
|
|
{ "UuidCreateSequential", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osUuidCreateSequential \
|
|
((RPC_STATUS(RPC_ENTRY*)(UUID*))aSyscall[78].pCurrent)
|
|
|
|
#if !defined(SQLITE_NO_SYNC) && SQLITE_MAX_MMAP_SIZE>0
|
|
{ "FlushViewOfFile", (SYSCALL)FlushViewOfFile, 0 },
|
|
#else
|
|
{ "FlushViewOfFile", (SYSCALL)0, 0 },
|
|
#endif
|
|
|
|
#define osFlushViewOfFile \
|
|
((BOOL(WINAPI*)(LPCVOID,SIZE_T))aSyscall[79].pCurrent)
|
|
|
|
}; /* End of the overrideable system calls */
|
|
|
|
/*
|
|
** This is the xSetSystemCall() method of sqlite3_vfs for all of the
|
|
** "win32" VFSes. Return SQLITE_OK opon successfully updating the
|
|
** system call pointer, or SQLITE_NOTFOUND if there is no configurable
|
|
** system call named zName.
|
|
*/
|
|
static int winSetSystemCall(
|
|
sqlite3_vfs *pNotUsed, /* The VFS pointer. Not used */
|
|
const char *zName, /* Name of system call to override */
|
|
sqlite3_syscall_ptr pNewFunc /* Pointer to new system call value */
|
|
){
|
|
unsigned int i;
|
|
int rc = SQLITE_NOTFOUND;
|
|
|
|
UNUSED_PARAMETER(pNotUsed);
|
|
if( zName==0 ){
|
|
/* If no zName is given, restore all system calls to their default
|
|
** settings and return NULL
|
|
*/
|
|
rc = SQLITE_OK;
|
|
for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
|
|
if( aSyscall[i].pDefault ){
|
|
aSyscall[i].pCurrent = aSyscall[i].pDefault;
|
|
}
|
|
}
|
|
}else{
|
|
/* If zName is specified, operate on only the one system call
|
|
** specified.
|
|
*/
|
|
for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
|
|
if( strcmp(zName, aSyscall[i].zName)==0 ){
|
|
if( aSyscall[i].pDefault==0 ){
|
|
aSyscall[i].pDefault = aSyscall[i].pCurrent;
|
|
}
|
|
rc = SQLITE_OK;
|
|
if( pNewFunc==0 ) pNewFunc = aSyscall[i].pDefault;
|
|
aSyscall[i].pCurrent = pNewFunc;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** Return the value of a system call. Return NULL if zName is not a
|
|
** recognized system call name. NULL is also returned if the system call
|
|
** is currently undefined.
|
|
*/
|
|
static sqlite3_syscall_ptr winGetSystemCall(
|
|
sqlite3_vfs *pNotUsed,
|
|
const char *zName
|
|
){
|
|
unsigned int i;
|
|
|
|
UNUSED_PARAMETER(pNotUsed);
|
|
for(i=0; i<sizeof(aSyscall)/sizeof(aSyscall[0]); i++){
|
|
if( strcmp(zName, aSyscall[i].zName)==0 ) return aSyscall[i].pCurrent;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
** Return the name of the first system call after zName. If zName==NULL
|
|
** then return the name of the first system call. Return NULL if zName
|
|
** is the last system call or if zName is not the name of a valid
|
|
** system call.
|
|
*/
|
|
static const char *winNextSystemCall(sqlite3_vfs *p, const char *zName){
|
|
int i = -1;
|
|
|
|
UNUSED_PARAMETER(p);
|
|
if( zName ){
|
|
for(i=0; i<ArraySize(aSyscall)-1; i++){
|
|
if( strcmp(zName, aSyscall[i].zName)==0 ) break;
|
|
}
|
|
}
|
|
for(i++; i<ArraySize(aSyscall); i++){
|
|
if( aSyscall[i].pCurrent!=0 ) return aSyscall[i].zName;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef SQLITE_WIN32_MALLOC
|
|
/*
|
|
** If a Win32 native heap has been configured, this function will attempt to
|
|
** compact it. Upon success, SQLITE_OK will be returned. Upon failure, one
|
|
** of SQLITE_NOMEM, SQLITE_ERROR, or SQLITE_NOTFOUND will be returned. The
|
|
** "pnLargest" argument, if non-zero, will be used to return the size of the
|
|
** largest committed free block in the heap, in bytes.
|
|
*/
|
|
int sqlite3_win32_compact_heap(LPUINT pnLargest){
|
|
int rc = SQLITE_OK;
|
|
UINT nLargest = 0;
|
|
HANDLE hHeap;
|
|
|
|
winMemAssertMagic();
|
|
hHeap = winMemGetHeap();
|
|
assert( hHeap!=0 );
|
|
assert( hHeap!=INVALID_HANDLE_VALUE );
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_MALLOC_VALIDATE)
|
|
assert( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
|
|
#endif
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT
|
|
if( (nLargest=osHeapCompact(hHeap, SQLITE_WIN32_HEAP_FLAGS))==0 ){
|
|
DWORD lastErrno = osGetLastError();
|
|
if( lastErrno==NO_ERROR ){
|
|
sqlite3_log(SQLITE_NOMEM, "failed to HeapCompact (no space), heap=%p",
|
|
(void*)hHeap);
|
|
rc = SQLITE_NOMEM;
|
|
}else{
|
|
sqlite3_log(SQLITE_ERROR, "failed to HeapCompact (%lu), heap=%p",
|
|
osGetLastError(), (void*)hHeap);
|
|
rc = SQLITE_ERROR;
|
|
}
|
|
}
|
|
#else
|
|
sqlite3_log(SQLITE_NOTFOUND, "failed to HeapCompact, heap=%p",
|
|
(void*)hHeap);
|
|
rc = SQLITE_NOTFOUND;
|
|
#endif
|
|
if( pnLargest ) *pnLargest = nLargest;
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** If a Win32 native heap has been configured, this function will attempt to
|
|
** destroy and recreate it. If the Win32 native heap is not isolated and/or
|
|
** the sqlite3_memory_used() function does not return zero, SQLITE_BUSY will
|
|
** be returned and no changes will be made to the Win32 native heap.
|
|
*/
|
|
int sqlite3_win32_reset_heap(){
|
|
int rc;
|
|
MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
|
|
MUTEX_LOGIC( sqlite3_mutex *pMem; ) /* The memsys static mutex */
|
|
MUTEX_LOGIC( pMaster = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MASTER); )
|
|
MUTEX_LOGIC( pMem = sqlite3_mutex_alloc(SQLITE_MUTEX_STATIC_MEM); )
|
|
sqlite3_mutex_enter(pMaster);
|
|
sqlite3_mutex_enter(pMem);
|
|
winMemAssertMagic();
|
|
if( winMemGetHeap()!=NULL && winMemGetOwned() && sqlite3_memory_used()==0 ){
|
|
/*
|
|
** At this point, there should be no outstanding memory allocations on
|
|
** the heap. Also, since both the master and memsys locks are currently
|
|
** being held by us, no other function (i.e. from another thread) should
|
|
** be able to even access the heap. Attempt to destroy and recreate our
|
|
** isolated Win32 native heap now.
|
|
*/
|
|
assert( winMemGetHeap()!=NULL );
|
|
assert( winMemGetOwned() );
|
|
assert( sqlite3_memory_used()==0 );
|
|
winMemShutdown(winMemGetDataPtr());
|
|
assert( winMemGetHeap()==NULL );
|
|
assert( !winMemGetOwned() );
|
|
assert( sqlite3_memory_used()==0 );
|
|
rc = winMemInit(winMemGetDataPtr());
|
|
assert( rc!=SQLITE_OK || winMemGetHeap()!=NULL );
|
|
assert( rc!=SQLITE_OK || winMemGetOwned() );
|
|
assert( rc!=SQLITE_OK || sqlite3_memory_used()==0 );
|
|
}else{
|
|
/*
|
|
** The Win32 native heap cannot be modified because it may be in use.
|
|
*/
|
|
rc = SQLITE_BUSY;
|
|
}
|
|
sqlite3_mutex_leave(pMem);
|
|
sqlite3_mutex_leave(pMaster);
|
|
return rc;
|
|
}
|
|
#endif /* SQLITE_WIN32_MALLOC */
|
|
|
|
/*
|
|
** This function outputs the specified (ANSI) string to the Win32 debugger
|
|
** (if available).
|
|
*/
|
|
|
|
void sqlite3_win32_write_debug(const char *zBuf, int nBuf){
|
|
char zDbgBuf[SQLITE_WIN32_DBG_BUF_SIZE];
|
|
int nMin = MIN(nBuf, (SQLITE_WIN32_DBG_BUF_SIZE - 1)); /* may be negative. */
|
|
if( nMin<-1 ) nMin = -1; /* all negative values become -1. */
|
|
assert( nMin==-1 || nMin==0 || nMin<SQLITE_WIN32_DBG_BUF_SIZE );
|
|
#if defined(SQLITE_WIN32_HAS_ANSI)
|
|
if( nMin>0 ){
|
|
memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE);
|
|
memcpy(zDbgBuf, zBuf, nMin);
|
|
osOutputDebugStringA(zDbgBuf);
|
|
}else{
|
|
osOutputDebugStringA(zBuf);
|
|
}
|
|
#elif defined(SQLITE_WIN32_HAS_WIDE)
|
|
memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE);
|
|
if ( osMultiByteToWideChar(
|
|
osAreFileApisANSI() ? CP_ACP : CP_OEMCP, 0, zBuf,
|
|
nMin, (LPWSTR)zDbgBuf, SQLITE_WIN32_DBG_BUF_SIZE/sizeof(WCHAR))<=0 ){
|
|
return;
|
|
}
|
|
osOutputDebugStringW((LPCWSTR)zDbgBuf);
|
|
#else
|
|
if( nMin>0 ){
|
|
memset(zDbgBuf, 0, SQLITE_WIN32_DBG_BUF_SIZE);
|
|
memcpy(zDbgBuf, zBuf, nMin);
|
|
fprintf(stderr, "%s", zDbgBuf);
|
|
}else{
|
|
fprintf(stderr, "%s", zBuf);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
** The following routine suspends the current thread for at least ms
|
|
** milliseconds. This is equivalent to the Win32 Sleep() interface.
|
|
*/
|
|
#if SQLITE_OS_WINRT
|
|
static HANDLE sleepObj = NULL;
|
|
#endif
|
|
|
|
void sqlite3_win32_sleep(DWORD milliseconds){
|
|
#if SQLITE_OS_WINRT
|
|
if ( sleepObj==NULL ){
|
|
sleepObj = osCreateEventExW(NULL, NULL, CREATE_EVENT_MANUAL_RESET,
|
|
SYNCHRONIZE);
|
|
}
|
|
assert( sleepObj!=NULL );
|
|
osWaitForSingleObjectEx(sleepObj, milliseconds, FALSE);
|
|
#else
|
|
osSleep(milliseconds);
|
|
#endif
|
|
}
|
|
|
|
#if SQLITE_MAX_WORKER_THREADS>0 && !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && \
|
|
SQLITE_THREADSAFE>0
|
|
DWORD sqlite3Win32Wait(HANDLE hObject){
|
|
DWORD rc;
|
|
while( (rc = osWaitForSingleObjectEx(hObject, INFINITE,
|
|
TRUE))==WAIT_IO_COMPLETION ){}
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
** Return true (non-zero) if we are running under WinNT, Win2K, WinXP,
|
|
** or WinCE. Return false (zero) for Win95, Win98, or WinME.
|
|
**
|
|
** Here is an interesting observation: Win95, Win98, and WinME lack
|
|
** the LockFileEx() API. But we can still statically link against that
|
|
** API as long as we don't call it when running Win95/98/ME. A call to
|
|
** this routine is used to determine if the host is Win95/98/ME or
|
|
** WinNT/2K/XP so that we will know whether or not we can safely call
|
|
** the LockFileEx() API.
|
|
*/
|
|
|
|
#if !SQLITE_WIN32_GETVERSIONEX
|
|
# define osIsNT() (1)
|
|
#elif SQLITE_OS_WINCE || SQLITE_OS_WINRT || !defined(SQLITE_WIN32_HAS_ANSI)
|
|
# define osIsNT() (1)
|
|
#elif !defined(SQLITE_WIN32_HAS_WIDE)
|
|
# define osIsNT() (0)
|
|
#else
|
|
# define osIsNT() ((sqlite3_os_type==2) || sqlite3_win32_is_nt())
|
|
#endif
|
|
|
|
/*
|
|
** This function determines if the machine is running a version of Windows
|
|
** based on the NT kernel.
|
|
*/
|
|
int sqlite3_win32_is_nt(void){
|
|
#if SQLITE_OS_WINRT
|
|
/*
|
|
** NOTE: The WinRT sub-platform is always assumed to be based on the NT
|
|
** kernel.
|
|
*/
|
|
return 1;
|
|
#elif SQLITE_WIN32_GETVERSIONEX
|
|
if( osInterlockedCompareExchange(&sqlite3_os_type, 0, 0)==0 ){
|
|
#if defined(SQLITE_WIN32_HAS_ANSI)
|
|
OSVERSIONINFOA sInfo;
|
|
sInfo.dwOSVersionInfoSize = sizeof(sInfo);
|
|
osGetVersionExA(&sInfo);
|
|
osInterlockedCompareExchange(&sqlite3_os_type,
|
|
(sInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) ? 2 : 1, 0);
|
|
#elif defined(SQLITE_WIN32_HAS_WIDE)
|
|
OSVERSIONINFOW sInfo;
|
|
sInfo.dwOSVersionInfoSize = sizeof(sInfo);
|
|
osGetVersionExW(&sInfo);
|
|
osInterlockedCompareExchange(&sqlite3_os_type,
|
|
(sInfo.dwPlatformId == VER_PLATFORM_WIN32_NT) ? 2 : 1, 0);
|
|
#endif
|
|
}
|
|
return osInterlockedCompareExchange(&sqlite3_os_type, 2, 2)==2;
|
|
#elif SQLITE_TEST
|
|
return osInterlockedCompareExchange(&sqlite3_os_type, 2, 2)==2;
|
|
#else
|
|
/*
|
|
** NOTE: All sub-platforms where the GetVersionEx[AW] functions are
|
|
** deprecated are always assumed to be based on the NT kernel.
|
|
*/
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
#ifdef SQLITE_WIN32_MALLOC
|
|
/*
|
|
** Allocate nBytes of memory.
|
|
*/
|
|
static void *winMemMalloc(int nBytes){
|
|
HANDLE hHeap;
|
|
void *p;
|
|
|
|
winMemAssertMagic();
|
|
hHeap = winMemGetHeap();
|
|
assert( hHeap!=0 );
|
|
assert( hHeap!=INVALID_HANDLE_VALUE );
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_MALLOC_VALIDATE)
|
|
assert( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
|
|
#endif
|
|
assert( nBytes>=0 );
|
|
p = osHeapAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, (SIZE_T)nBytes);
|
|
if( !p ){
|
|
sqlite3_log(SQLITE_NOMEM, "failed to HeapAlloc %u bytes (%lu), heap=%p",
|
|
nBytes, osGetLastError(), (void*)hHeap);
|
|
}
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
** Free memory.
|
|
*/
|
|
static void winMemFree(void *pPrior){
|
|
HANDLE hHeap;
|
|
|
|
winMemAssertMagic();
|
|
hHeap = winMemGetHeap();
|
|
assert( hHeap!=0 );
|
|
assert( hHeap!=INVALID_HANDLE_VALUE );
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_MALLOC_VALIDATE)
|
|
assert( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) );
|
|
#endif
|
|
if( !pPrior ) return; /* Passing NULL to HeapFree is undefined. */
|
|
if( !osHeapFree(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) ){
|
|
sqlite3_log(SQLITE_NOMEM, "failed to HeapFree block %p (%lu), heap=%p",
|
|
pPrior, osGetLastError(), (void*)hHeap);
|
|
}
|
|
}
|
|
|
|
/*
|
|
** Change the size of an existing memory allocation
|
|
*/
|
|
static void *winMemRealloc(void *pPrior, int nBytes){
|
|
HANDLE hHeap;
|
|
void *p;
|
|
|
|
winMemAssertMagic();
|
|
hHeap = winMemGetHeap();
|
|
assert( hHeap!=0 );
|
|
assert( hHeap!=INVALID_HANDLE_VALUE );
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_MALLOC_VALIDATE)
|
|
assert( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior) );
|
|
#endif
|
|
assert( nBytes>=0 );
|
|
if( !pPrior ){
|
|
p = osHeapAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, (SIZE_T)nBytes);
|
|
}else{
|
|
p = osHeapReAlloc(hHeap, SQLITE_WIN32_HEAP_FLAGS, pPrior, (SIZE_T)nBytes);
|
|
}
|
|
if( !p ){
|
|
sqlite3_log(SQLITE_NOMEM, "failed to %s %u bytes (%lu), heap=%p",
|
|
pPrior ? "HeapReAlloc" : "HeapAlloc", nBytes, osGetLastError(),
|
|
(void*)hHeap);
|
|
}
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
** Return the size of an outstanding allocation, in bytes.
|
|
*/
|
|
static int winMemSize(void *p){
|
|
HANDLE hHeap;
|
|
SIZE_T n;
|
|
|
|
winMemAssertMagic();
|
|
hHeap = winMemGetHeap();
|
|
assert( hHeap!=0 );
|
|
assert( hHeap!=INVALID_HANDLE_VALUE );
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_MALLOC_VALIDATE)
|
|
assert( osHeapValidate(hHeap, SQLITE_WIN32_HEAP_FLAGS, p) );
|
|
#endif
|
|
if( !p ) return 0;
|
|
n = osHeapSize(hHeap, SQLITE_WIN32_HEAP_FLAGS, p);
|
|
if( n==(SIZE_T)-1 ){
|
|
sqlite3_log(SQLITE_NOMEM, "failed to HeapSize block %p (%lu), heap=%p",
|
|
p, osGetLastError(), (void*)hHeap);
|
|
return 0;
|
|
}
|
|
return (int)n;
|
|
}
|
|
|
|
/*
|
|
** Round up a request size to the next valid allocation size.
|
|
*/
|
|
static int winMemRoundup(int n){
|
|
return n;
|
|
}
|
|
|
|
/*
|
|
** Initialize this module.
|
|
*/
|
|
static int winMemInit(void *pAppData){
|
|
winMemData *pWinMemData = (winMemData *)pAppData;
|
|
|
|
if( !pWinMemData ) return SQLITE_ERROR;
|
|
assert( pWinMemData->magic1==WINMEM_MAGIC1 );
|
|
assert( pWinMemData->magic2==WINMEM_MAGIC2 );
|
|
|
|
#if !SQLITE_OS_WINRT && SQLITE_WIN32_HEAP_CREATE
|
|
if( !pWinMemData->hHeap ){
|
|
DWORD dwInitialSize = SQLITE_WIN32_HEAP_INIT_SIZE;
|
|
DWORD dwMaximumSize = (DWORD)sqlite3GlobalConfig.nHeap;
|
|
if( dwMaximumSize==0 ){
|
|
dwMaximumSize = SQLITE_WIN32_HEAP_MAX_SIZE;
|
|
}else if( dwInitialSize>dwMaximumSize ){
|
|
dwInitialSize = dwMaximumSize;
|
|
}
|
|
pWinMemData->hHeap = osHeapCreate(SQLITE_WIN32_HEAP_FLAGS,
|
|
dwInitialSize, dwMaximumSize);
|
|
if( !pWinMemData->hHeap ){
|
|
sqlite3_log(SQLITE_NOMEM,
|
|
"failed to HeapCreate (%lu), flags=%u, initSize=%lu, maxSize=%lu",
|
|
osGetLastError(), SQLITE_WIN32_HEAP_FLAGS, dwInitialSize,
|
|
dwMaximumSize);
|
|
return SQLITE_NOMEM;
|
|
}
|
|
pWinMemData->bOwned = TRUE;
|
|
assert( pWinMemData->bOwned );
|
|
}
|
|
#else
|
|
pWinMemData->hHeap = osGetProcessHeap();
|
|
if( !pWinMemData->hHeap ){
|
|
sqlite3_log(SQLITE_NOMEM,
|
|
"failed to GetProcessHeap (%lu)", osGetLastError());
|
|
return SQLITE_NOMEM;
|
|
}
|
|
pWinMemData->bOwned = FALSE;
|
|
assert( !pWinMemData->bOwned );
|
|
#endif
|
|
assert( pWinMemData->hHeap!=0 );
|
|
assert( pWinMemData->hHeap!=INVALID_HANDLE_VALUE );
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_MALLOC_VALIDATE)
|
|
assert( osHeapValidate(pWinMemData->hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
|
|
#endif
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Deinitialize this module.
|
|
*/
|
|
static void winMemShutdown(void *pAppData){
|
|
winMemData *pWinMemData = (winMemData *)pAppData;
|
|
|
|
if( !pWinMemData ) return;
|
|
assert( pWinMemData->magic1==WINMEM_MAGIC1 );
|
|
assert( pWinMemData->magic2==WINMEM_MAGIC2 );
|
|
|
|
if( pWinMemData->hHeap ){
|
|
assert( pWinMemData->hHeap!=INVALID_HANDLE_VALUE );
|
|
#if !SQLITE_OS_WINRT && defined(SQLITE_WIN32_MALLOC_VALIDATE)
|
|
assert( osHeapValidate(pWinMemData->hHeap, SQLITE_WIN32_HEAP_FLAGS, NULL) );
|
|
#endif
|
|
if( pWinMemData->bOwned ){
|
|
if( !osHeapDestroy(pWinMemData->hHeap) ){
|
|
sqlite3_log(SQLITE_NOMEM, "failed to HeapDestroy (%lu), heap=%p",
|
|
osGetLastError(), (void*)pWinMemData->hHeap);
|
|
}
|
|
pWinMemData->bOwned = FALSE;
|
|
}
|
|
pWinMemData->hHeap = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
** Populate the low-level memory allocation function pointers in
|
|
** sqlite3GlobalConfig.m with pointers to the routines in this file. The
|
|
** arguments specify the block of memory to manage.
|
|
**
|
|
** This routine is only called by sqlite3_config(), and therefore
|
|
** is not required to be threadsafe (it is not).
|
|
*/
|
|
const sqlite3_mem_methods *sqlite3MemGetWin32(void){
|
|
static const sqlite3_mem_methods winMemMethods = {
|
|
winMemMalloc,
|
|
winMemFree,
|
|
winMemRealloc,
|
|
winMemSize,
|
|
winMemRoundup,
|
|
winMemInit,
|
|
winMemShutdown,
|
|
&win_mem_data
|
|
};
|
|
return &winMemMethods;
|
|
}
|
|
|
|
void sqlite3MemSetDefault(void){
|
|
sqlite3_config(SQLITE_CONFIG_MALLOC, sqlite3MemGetWin32());
|
|
}
|
|
#endif /* SQLITE_WIN32_MALLOC */
|
|
|
|
/*
|
|
** Convert a UTF-8 string to Microsoft Unicode (UTF-16?).
|
|
**
|
|
** Space to hold the returned string is obtained from malloc.
|
|
*/
|
|
static LPWSTR winUtf8ToUnicode(const char *zFilename){
|
|
int nChar;
|
|
LPWSTR zWideFilename;
|
|
|
|
nChar = osMultiByteToWideChar(CP_UTF8, 0, zFilename, -1, NULL, 0);
|
|
if( nChar==0 ){
|
|
return 0;
|
|
}
|
|
zWideFilename = sqlite3MallocZero( nChar*sizeof(zWideFilename[0]) );
|
|
if( zWideFilename==0 ){
|
|
return 0;
|
|
}
|
|
nChar = osMultiByteToWideChar(CP_UTF8, 0, zFilename, -1, zWideFilename,
|
|
nChar);
|
|
if( nChar==0 ){
|
|
sqlite3_free(zWideFilename);
|
|
zWideFilename = 0;
|
|
}
|
|
return zWideFilename;
|
|
}
|
|
|
|
/*
|
|
** Convert Microsoft Unicode to UTF-8. Space to hold the returned string is
|
|
** obtained from sqlite3_malloc().
|
|
*/
|
|
static char *winUnicodeToUtf8(LPCWSTR zWideFilename){
|
|
int nByte;
|
|
char *zFilename;
|
|
|
|
nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, 0, 0, 0, 0);
|
|
if( nByte == 0 ){
|
|
return 0;
|
|
}
|
|
zFilename = sqlite3MallocZero( nByte );
|
|
if( zFilename==0 ){
|
|
return 0;
|
|
}
|
|
nByte = osWideCharToMultiByte(CP_UTF8, 0, zWideFilename, -1, zFilename, nByte,
|
|
0, 0);
|
|
if( nByte == 0 ){
|
|
sqlite3_free(zFilename);
|
|
zFilename = 0;
|
|
}
|
|
return zFilename;
|
|
}
|
|
|
|
/*
|
|
** Convert an ANSI string to Microsoft Unicode, based on the
|
|
** current codepage settings for file apis.
|
|
**
|
|
** Space to hold the returned string is obtained
|
|
** from sqlite3_malloc.
|
|
*/
|
|
static LPWSTR winMbcsToUnicode(const char *zFilename){
|
|
int nByte;
|
|
LPWSTR zMbcsFilename;
|
|
int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP;
|
|
|
|
nByte = osMultiByteToWideChar(codepage, 0, zFilename, -1, NULL,
|
|
0)*sizeof(WCHAR);
|
|
if( nByte==0 ){
|
|
return 0;
|
|
}
|
|
zMbcsFilename = sqlite3MallocZero( nByte*sizeof(zMbcsFilename[0]) );
|
|
if( zMbcsFilename==0 ){
|
|
return 0;
|
|
}
|
|
nByte = osMultiByteToWideChar(codepage, 0, zFilename, -1, zMbcsFilename,
|
|
nByte);
|
|
if( nByte==0 ){
|
|
sqlite3_free(zMbcsFilename);
|
|
zMbcsFilename = 0;
|
|
}
|
|
return zMbcsFilename;
|
|
}
|
|
|
|
/*
|
|
** Convert Microsoft Unicode to multi-byte character string, based on the
|
|
** user's ANSI codepage.
|
|
**
|
|
** Space to hold the returned string is obtained from
|
|
** sqlite3_malloc().
|
|
*/
|
|
static char *winUnicodeToMbcs(LPCWSTR zWideFilename){
|
|
int nByte;
|
|
char *zFilename;
|
|
int codepage = osAreFileApisANSI() ? CP_ACP : CP_OEMCP;
|
|
|
|
nByte = osWideCharToMultiByte(codepage, 0, zWideFilename, -1, 0, 0, 0, 0);
|
|
if( nByte == 0 ){
|
|
return 0;
|
|
}
|
|
zFilename = sqlite3MallocZero( nByte );
|
|
if( zFilename==0 ){
|
|
return 0;
|
|
}
|
|
nByte = osWideCharToMultiByte(codepage, 0, zWideFilename, -1, zFilename,
|
|
nByte, 0, 0);
|
|
if( nByte == 0 ){
|
|
sqlite3_free(zFilename);
|
|
zFilename = 0;
|
|
}
|
|
return zFilename;
|
|
}
|
|
|
|
/*
|
|
** Convert multibyte character string to UTF-8. Space to hold the
|
|
** returned string is obtained from sqlite3_malloc().
|
|
*/
|
|
char *sqlite3_win32_mbcs_to_utf8(const char *zFilename){
|
|
char *zFilenameUtf8;
|
|
LPWSTR zTmpWide;
|
|
|
|
zTmpWide = winMbcsToUnicode(zFilename);
|
|
if( zTmpWide==0 ){
|
|
return 0;
|
|
}
|
|
zFilenameUtf8 = winUnicodeToUtf8(zTmpWide);
|
|
sqlite3_free(zTmpWide);
|
|
return zFilenameUtf8;
|
|
}
|
|
|
|
/*
|
|
** Convert UTF-8 to multibyte character string. Space to hold the
|
|
** returned string is obtained from sqlite3_malloc().
|
|
*/
|
|
char *sqlite3_win32_utf8_to_mbcs(const char *zFilename){
|
|
char *zFilenameMbcs;
|
|
LPWSTR zTmpWide;
|
|
|
|
zTmpWide = winUtf8ToUnicode(zFilename);
|
|
if( zTmpWide==0 ){
|
|
return 0;
|
|
}
|
|
zFilenameMbcs = winUnicodeToMbcs(zTmpWide);
|
|
sqlite3_free(zTmpWide);
|
|
return zFilenameMbcs;
|
|
}
|
|
|
|
/*
|
|
** This function sets the data directory or the temporary directory based on
|
|
** the provided arguments. The type argument must be 1 in order to set the
|
|
** data directory or 2 in order to set the temporary directory. The zValue
|
|
** argument is the name of the directory to use. The return value will be
|
|
** SQLITE_OK if successful.
|
|
*/
|
|
int sqlite3_win32_set_directory(DWORD type, LPCWSTR zValue){
|
|
char **ppDirectory = 0;
|
|
#ifndef SQLITE_OMIT_AUTOINIT
|
|
int rc = sqlite3_initialize();
|
|
if( rc ) return rc;
|
|
#endif
|
|
if( type==SQLITE_WIN32_DATA_DIRECTORY_TYPE ){
|
|
ppDirectory = &sqlite3_data_directory;
|
|
}else if( type==SQLITE_WIN32_TEMP_DIRECTORY_TYPE ){
|
|
ppDirectory = &sqlite3_temp_directory;
|
|
}
|
|
assert( !ppDirectory || type==SQLITE_WIN32_DATA_DIRECTORY_TYPE
|
|
|| type==SQLITE_WIN32_TEMP_DIRECTORY_TYPE
|
|
);
|
|
assert( !ppDirectory || sqlite3MemdebugHasType(*ppDirectory, MEMTYPE_HEAP) );
|
|
if( ppDirectory ){
|
|
char *zValueUtf8 = 0;
|
|
if( zValue && zValue[0] ){
|
|
zValueUtf8 = winUnicodeToUtf8(zValue);
|
|
if ( zValueUtf8==0 ){
|
|
return SQLITE_NOMEM;
|
|
}
|
|
}
|
|
sqlite3_free(*ppDirectory);
|
|
*ppDirectory = zValueUtf8;
|
|
return SQLITE_OK;
|
|
}
|
|
return SQLITE_ERROR;
|
|
}
|
|
|
|
/*
|
|
** The return value of winGetLastErrorMsg
|
|
** is zero if the error message fits in the buffer, or non-zero
|
|
** otherwise (if the message was truncated).
|
|
*/
|
|
static int winGetLastErrorMsg(DWORD lastErrno, int nBuf, char *zBuf){
|
|
/* FormatMessage returns 0 on failure. Otherwise it
|
|
** returns the number of TCHARs written to the output
|
|
** buffer, excluding the terminating null char.
|
|
*/
|
|
DWORD dwLen = 0;
|
|
char *zOut = 0;
|
|
|
|
if( osIsNT() ){
|
|
#if SQLITE_OS_WINRT
|
|
WCHAR zTempWide[SQLITE_WIN32_MAX_ERRMSG_CHARS+1];
|
|
dwLen = osFormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM |
|
|
FORMAT_MESSAGE_IGNORE_INSERTS,
|
|
NULL,
|
|
lastErrno,
|
|
0,
|
|
zTempWide,
|
|
SQLITE_WIN32_MAX_ERRMSG_CHARS,
|
|
0);
|
|
#else
|
|
LPWSTR zTempWide = NULL;
|
|
dwLen = osFormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
|
|
FORMAT_MESSAGE_FROM_SYSTEM |
|
|
FORMAT_MESSAGE_IGNORE_INSERTS,
|
|
NULL,
|
|
lastErrno,
|
|
0,
|
|
(LPWSTR) &zTempWide,
|
|
0,
|
|
0);
|
|
#endif
|
|
if( dwLen > 0 ){
|
|
/* allocate a buffer and convert to UTF8 */
|
|
sqlite3BeginBenignMalloc();
|
|
zOut = winUnicodeToUtf8(zTempWide);
|
|
sqlite3EndBenignMalloc();
|
|
#if !SQLITE_OS_WINRT
|
|
/* free the system buffer allocated by FormatMessage */
|
|
osLocalFree(zTempWide);
|
|
#endif
|
|
}
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
char *zTemp = NULL;
|
|
dwLen = osFormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER |
|
|
FORMAT_MESSAGE_FROM_SYSTEM |
|
|
FORMAT_MESSAGE_IGNORE_INSERTS,
|
|
NULL,
|
|
lastErrno,
|
|
0,
|
|
(LPSTR) &zTemp,
|
|
0,
|
|
0);
|
|
if( dwLen > 0 ){
|
|
/* allocate a buffer and convert to UTF8 */
|
|
sqlite3BeginBenignMalloc();
|
|
zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
|
|
sqlite3EndBenignMalloc();
|
|
/* free the system buffer allocated by FormatMessage */
|
|
osLocalFree(zTemp);
|
|
}
|
|
}
|
|
#endif
|
|
if( 0 == dwLen ){
|
|
sqlite3_snprintf(nBuf, zBuf, "OsError 0x%lx (%lu)", lastErrno, lastErrno);
|
|
}else{
|
|
/* copy a maximum of nBuf chars to output buffer */
|
|
sqlite3_snprintf(nBuf, zBuf, "%s", zOut);
|
|
/* free the UTF8 buffer */
|
|
sqlite3_free(zOut);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
**
|
|
** This function - winLogErrorAtLine() - is only ever called via the macro
|
|
** winLogError().
|
|
**
|
|
** This routine is invoked after an error occurs in an OS function.
|
|
** It logs a message using sqlite3_log() containing the current value of
|
|
** error code and, if possible, the human-readable equivalent from
|
|
** FormatMessage.
|
|
**
|
|
** The first argument passed to the macro should be the error code that
|
|
** will be returned to SQLite (e.g. SQLITE_IOERR_DELETE, SQLITE_CANTOPEN).
|
|
** The two subsequent arguments should be the name of the OS function that
|
|
** failed and the associated file-system path, if any.
|
|
*/
|
|
#define winLogError(a,b,c,d) winLogErrorAtLine(a,b,c,d,__LINE__)
|
|
static int winLogErrorAtLine(
|
|
int errcode, /* SQLite error code */
|
|
DWORD lastErrno, /* Win32 last error */
|
|
const char *zFunc, /* Name of OS function that failed */
|
|
const char *zPath, /* File path associated with error */
|
|
int iLine /* Source line number where error occurred */
|
|
){
|
|
char zMsg[500]; /* Human readable error text */
|
|
int i; /* Loop counter */
|
|
|
|
zMsg[0] = 0;
|
|
winGetLastErrorMsg(lastErrno, sizeof(zMsg), zMsg);
|
|
assert( errcode!=SQLITE_OK );
|
|
if( zPath==0 ) zPath = "";
|
|
for(i=0; zMsg[i] && zMsg[i]!='\r' && zMsg[i]!='\n'; i++){}
|
|
zMsg[i] = 0;
|
|
sqlite3_log(errcode,
|
|
"os_win.c:%d: (%lu) %s(%s) - %s",
|
|
iLine, lastErrno, zFunc, zPath, zMsg
|
|
);
|
|
|
|
return errcode;
|
|
}
|
|
|
|
/*
|
|
** The number of times that a ReadFile(), WriteFile(), and DeleteFile()
|
|
** will be retried following a locking error - probably caused by
|
|
** antivirus software. Also the initial delay before the first retry.
|
|
** The delay increases linearly with each retry.
|
|
*/
|
|
#ifndef SQLITE_WIN32_IOERR_RETRY
|
|
# define SQLITE_WIN32_IOERR_RETRY 10
|
|
#endif
|
|
#ifndef SQLITE_WIN32_IOERR_RETRY_DELAY
|
|
# define SQLITE_WIN32_IOERR_RETRY_DELAY 25
|
|
#endif
|
|
static int winIoerrRetry = SQLITE_WIN32_IOERR_RETRY;
|
|
static int winIoerrRetryDelay = SQLITE_WIN32_IOERR_RETRY_DELAY;
|
|
|
|
/*
|
|
** The "winIoerrCanRetry1" macro is used to determine if a particular I/O
|
|
** error code obtained via GetLastError() is eligible to be retried. It
|
|
** must accept the error code DWORD as its only argument and should return
|
|
** non-zero if the error code is transient in nature and the operation
|
|
** responsible for generating the original error might succeed upon being
|
|
** retried. The argument to this macro should be a variable.
|
|
**
|
|
** Additionally, a macro named "winIoerrCanRetry2" may be defined. If it
|
|
** is defined, it will be consulted only when the macro "winIoerrCanRetry1"
|
|
** returns zero. The "winIoerrCanRetry2" macro is completely optional and
|
|
** may be used to include additional error codes in the set that should
|
|
** result in the failing I/O operation being retried by the caller. If
|
|
** defined, the "winIoerrCanRetry2" macro must exhibit external semantics
|
|
** identical to those of the "winIoerrCanRetry1" macro.
|
|
*/
|
|
#if !defined(winIoerrCanRetry1)
|
|
#define winIoerrCanRetry1(a) (((a)==ERROR_ACCESS_DENIED) || \
|
|
((a)==ERROR_SHARING_VIOLATION) || \
|
|
((a)==ERROR_LOCK_VIOLATION) || \
|
|
((a)==ERROR_DEV_NOT_EXIST) || \
|
|
((a)==ERROR_NETNAME_DELETED) || \
|
|
((a)==ERROR_SEM_TIMEOUT) || \
|
|
((a)==ERROR_NETWORK_UNREACHABLE))
|
|
#endif
|
|
|
|
/*
|
|
** If a ReadFile() or WriteFile() error occurs, invoke this routine
|
|
** to see if it should be retried. Return TRUE to retry. Return FALSE
|
|
** to give up with an error.
|
|
*/
|
|
static int winRetryIoerr(int *pnRetry, DWORD *pError){
|
|
DWORD e = osGetLastError();
|
|
if( *pnRetry>=winIoerrRetry ){
|
|
if( pError ){
|
|
*pError = e;
|
|
}
|
|
return 0;
|
|
}
|
|
if( winIoerrCanRetry1(e) ){
|
|
sqlite3_win32_sleep(winIoerrRetryDelay*(1+*pnRetry));
|
|
++*pnRetry;
|
|
return 1;
|
|
}
|
|
#if defined(winIoerrCanRetry2)
|
|
else if( winIoerrCanRetry2(e) ){
|
|
sqlite3_win32_sleep(winIoerrRetryDelay*(1+*pnRetry));
|
|
++*pnRetry;
|
|
return 1;
|
|
}
|
|
#endif
|
|
if( pError ){
|
|
*pError = e;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
** Log a I/O error retry episode.
|
|
*/
|
|
static void winLogIoerr(int nRetry, int lineno){
|
|
if( nRetry ){
|
|
sqlite3_log(SQLITE_NOTICE,
|
|
"delayed %dms for lock/sharing conflict at line %d",
|
|
winIoerrRetryDelay*nRetry*(nRetry+1)/2, lineno
|
|
);
|
|
}
|
|
}
|
|
|
|
#if SQLITE_OS_WINCE
|
|
/*************************************************************************
|
|
** This section contains code for WinCE only.
|
|
*/
|
|
#if !defined(SQLITE_MSVC_LOCALTIME_API) || !SQLITE_MSVC_LOCALTIME_API
|
|
/*
|
|
** The MSVC CRT on Windows CE may not have a localtime() function. So
|
|
** create a substitute.
|
|
*/
|
|
#include <time.h>
|
|
struct tm *__cdecl localtime(const time_t *t)
|
|
{
|
|
static struct tm y;
|
|
FILETIME uTm, lTm;
|
|
SYSTEMTIME pTm;
|
|
sqlite3_int64 t64;
|
|
t64 = *t;
|
|
t64 = (t64 + 11644473600)*10000000;
|
|
uTm.dwLowDateTime = (DWORD)(t64 & 0xFFFFFFFF);
|
|
uTm.dwHighDateTime= (DWORD)(t64 >> 32);
|
|
osFileTimeToLocalFileTime(&uTm,&lTm);
|
|
osFileTimeToSystemTime(&lTm,&pTm);
|
|
y.tm_year = pTm.wYear - 1900;
|
|
y.tm_mon = pTm.wMonth - 1;
|
|
y.tm_wday = pTm.wDayOfWeek;
|
|
y.tm_mday = pTm.wDay;
|
|
y.tm_hour = pTm.wHour;
|
|
y.tm_min = pTm.wMinute;
|
|
y.tm_sec = pTm.wSecond;
|
|
return &y;
|
|
}
|
|
#endif
|
|
|
|
#define HANDLE_TO_WINFILE(a) (winFile*)&((char*)a)[-(int)offsetof(winFile,h)]
|
|
|
|
/*
|
|
** Acquire a lock on the handle h
|
|
*/
|
|
static void winceMutexAcquire(HANDLE h){
|
|
DWORD dwErr;
|
|
do {
|
|
dwErr = osWaitForSingleObject(h, INFINITE);
|
|
} while (dwErr != WAIT_OBJECT_0 && dwErr != WAIT_ABANDONED);
|
|
}
|
|
/*
|
|
** Release a lock acquired by winceMutexAcquire()
|
|
*/
|
|
#define winceMutexRelease(h) ReleaseMutex(h)
|
|
|
|
/*
|
|
** Create the mutex and shared memory used for locking in the file
|
|
** descriptor pFile
|
|
*/
|
|
static int winceCreateLock(const char *zFilename, winFile *pFile){
|
|
LPWSTR zTok;
|
|
LPWSTR zName;
|
|
DWORD lastErrno;
|
|
BOOL bLogged = FALSE;
|
|
BOOL bInit = TRUE;
|
|
|
|
zName = winUtf8ToUnicode(zFilename);
|
|
if( zName==0 ){
|
|
/* out of memory */
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
|
|
/* Initialize the local lockdata */
|
|
memset(&pFile->local, 0, sizeof(pFile->local));
|
|
|
|
/* Replace the backslashes from the filename and lowercase it
|
|
** to derive a mutex name. */
|
|
zTok = osCharLowerW(zName);
|
|
for (;*zTok;zTok++){
|
|
if (*zTok == '\\') *zTok = '_';
|
|
}
|
|
|
|
/* Create/open the named mutex */
|
|
pFile->hMutex = osCreateMutexW(NULL, FALSE, zName);
|
|
if (!pFile->hMutex){
|
|
pFile->lastErrno = osGetLastError();
|
|
sqlite3_free(zName);
|
|
return winLogError(SQLITE_IOERR, pFile->lastErrno,
|
|
"winceCreateLock1", zFilename);
|
|
}
|
|
|
|
/* Acquire the mutex before continuing */
|
|
winceMutexAcquire(pFile->hMutex);
|
|
|
|
/* Since the names of named mutexes, semaphores, file mappings etc are
|
|
** case-sensitive, take advantage of that by uppercasing the mutex name
|
|
** and using that as the shared filemapping name.
|
|
*/
|
|
osCharUpperW(zName);
|
|
pFile->hShared = osCreateFileMappingW(INVALID_HANDLE_VALUE, NULL,
|
|
PAGE_READWRITE, 0, sizeof(winceLock),
|
|
zName);
|
|
|
|
/* Set a flag that indicates we're the first to create the memory so it
|
|
** must be zero-initialized */
|
|
lastErrno = osGetLastError();
|
|
if (lastErrno == ERROR_ALREADY_EXISTS){
|
|
bInit = FALSE;
|
|
}
|
|
|
|
sqlite3_free(zName);
|
|
|
|
/* If we succeeded in making the shared memory handle, map it. */
|
|
if( pFile->hShared ){
|
|
pFile->shared = (winceLock*)osMapViewOfFile(pFile->hShared,
|
|
FILE_MAP_READ|FILE_MAP_WRITE, 0, 0, sizeof(winceLock));
|
|
/* If mapping failed, close the shared memory handle and erase it */
|
|
if( !pFile->shared ){
|
|
pFile->lastErrno = osGetLastError();
|
|
winLogError(SQLITE_IOERR, pFile->lastErrno,
|
|
"winceCreateLock2", zFilename);
|
|
bLogged = TRUE;
|
|
osCloseHandle(pFile->hShared);
|
|
pFile->hShared = NULL;
|
|
}
|
|
}
|
|
|
|
/* If shared memory could not be created, then close the mutex and fail */
|
|
if( pFile->hShared==NULL ){
|
|
if( !bLogged ){
|
|
pFile->lastErrno = lastErrno;
|
|
winLogError(SQLITE_IOERR, pFile->lastErrno,
|
|
"winceCreateLock3", zFilename);
|
|
bLogged = TRUE;
|
|
}
|
|
winceMutexRelease(pFile->hMutex);
|
|
osCloseHandle(pFile->hMutex);
|
|
pFile->hMutex = NULL;
|
|
return SQLITE_IOERR;
|
|
}
|
|
|
|
/* Initialize the shared memory if we're supposed to */
|
|
if( bInit ){
|
|
memset(pFile->shared, 0, sizeof(winceLock));
|
|
}
|
|
|
|
winceMutexRelease(pFile->hMutex);
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Destroy the part of winFile that deals with wince locks
|
|
*/
|
|
static void winceDestroyLock(winFile *pFile){
|
|
if (pFile->hMutex){
|
|
/* Acquire the mutex */
|
|
winceMutexAcquire(pFile->hMutex);
|
|
|
|
/* The following blocks should probably assert in debug mode, but they
|
|
are to cleanup in case any locks remained open */
|
|
if (pFile->local.nReaders){
|
|
pFile->shared->nReaders --;
|
|
}
|
|
if (pFile->local.bReserved){
|
|
pFile->shared->bReserved = FALSE;
|
|
}
|
|
if (pFile->local.bPending){
|
|
pFile->shared->bPending = FALSE;
|
|
}
|
|
if (pFile->local.bExclusive){
|
|
pFile->shared->bExclusive = FALSE;
|
|
}
|
|
|
|
/* De-reference and close our copy of the shared memory handle */
|
|
osUnmapViewOfFile(pFile->shared);
|
|
osCloseHandle(pFile->hShared);
|
|
|
|
/* Done with the mutex */
|
|
winceMutexRelease(pFile->hMutex);
|
|
osCloseHandle(pFile->hMutex);
|
|
pFile->hMutex = NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
** An implementation of the LockFile() API of Windows for CE
|
|
*/
|
|
static BOOL winceLockFile(
|
|
LPHANDLE phFile,
|
|
DWORD dwFileOffsetLow,
|
|
DWORD dwFileOffsetHigh,
|
|
DWORD nNumberOfBytesToLockLow,
|
|
DWORD nNumberOfBytesToLockHigh
|
|
){
|
|
winFile *pFile = HANDLE_TO_WINFILE(phFile);
|
|
BOOL bReturn = FALSE;
|
|
|
|
UNUSED_PARAMETER(dwFileOffsetHigh);
|
|
UNUSED_PARAMETER(nNumberOfBytesToLockHigh);
|
|
|
|
if (!pFile->hMutex) return TRUE;
|
|
winceMutexAcquire(pFile->hMutex);
|
|
|
|
/* Wanting an exclusive lock? */
|
|
if (dwFileOffsetLow == (DWORD)SHARED_FIRST
|
|
&& nNumberOfBytesToLockLow == (DWORD)SHARED_SIZE){
|
|
if (pFile->shared->nReaders == 0 && pFile->shared->bExclusive == 0){
|
|
pFile->shared->bExclusive = TRUE;
|
|
pFile->local.bExclusive = TRUE;
|
|
bReturn = TRUE;
|
|
}
|
|
}
|
|
|
|
/* Want a read-only lock? */
|
|
else if (dwFileOffsetLow == (DWORD)SHARED_FIRST &&
|
|
nNumberOfBytesToLockLow == 1){
|
|
if (pFile->shared->bExclusive == 0){
|
|
pFile->local.nReaders ++;
|
|
if (pFile->local.nReaders == 1){
|
|
pFile->shared->nReaders ++;
|
|
}
|
|
bReturn = TRUE;
|
|
}
|
|
}
|
|
|
|
/* Want a pending lock? */
|
|
else if (dwFileOffsetLow == (DWORD)PENDING_BYTE
|
|
&& nNumberOfBytesToLockLow == 1){
|
|
/* If no pending lock has been acquired, then acquire it */
|
|
if (pFile->shared->bPending == 0) {
|
|
pFile->shared->bPending = TRUE;
|
|
pFile->local.bPending = TRUE;
|
|
bReturn = TRUE;
|
|
}
|
|
}
|
|
|
|
/* Want a reserved lock? */
|
|
else if (dwFileOffsetLow == (DWORD)RESERVED_BYTE
|
|
&& nNumberOfBytesToLockLow == 1){
|
|
if (pFile->shared->bReserved == 0) {
|
|
pFile->shared->bReserved = TRUE;
|
|
pFile->local.bReserved = TRUE;
|
|
bReturn = TRUE;
|
|
}
|
|
}
|
|
|
|
winceMutexRelease(pFile->hMutex);
|
|
return bReturn;
|
|
}
|
|
|
|
/*
|
|
** An implementation of the UnlockFile API of Windows for CE
|
|
*/
|
|
static BOOL winceUnlockFile(
|
|
LPHANDLE phFile,
|
|
DWORD dwFileOffsetLow,
|
|
DWORD dwFileOffsetHigh,
|
|
DWORD nNumberOfBytesToUnlockLow,
|
|
DWORD nNumberOfBytesToUnlockHigh
|
|
){
|
|
winFile *pFile = HANDLE_TO_WINFILE(phFile);
|
|
BOOL bReturn = FALSE;
|
|
|
|
UNUSED_PARAMETER(dwFileOffsetHigh);
|
|
UNUSED_PARAMETER(nNumberOfBytesToUnlockHigh);
|
|
|
|
if (!pFile->hMutex) return TRUE;
|
|
winceMutexAcquire(pFile->hMutex);
|
|
|
|
/* Releasing a reader lock or an exclusive lock */
|
|
if (dwFileOffsetLow == (DWORD)SHARED_FIRST){
|
|
/* Did we have an exclusive lock? */
|
|
if (pFile->local.bExclusive){
|
|
assert(nNumberOfBytesToUnlockLow == (DWORD)SHARED_SIZE);
|
|
pFile->local.bExclusive = FALSE;
|
|
pFile->shared->bExclusive = FALSE;
|
|
bReturn = TRUE;
|
|
}
|
|
|
|
/* Did we just have a reader lock? */
|
|
else if (pFile->local.nReaders){
|
|
assert(nNumberOfBytesToUnlockLow == (DWORD)SHARED_SIZE
|
|
|| nNumberOfBytesToUnlockLow == 1);
|
|
pFile->local.nReaders --;
|
|
if (pFile->local.nReaders == 0)
|
|
{
|
|
pFile->shared->nReaders --;
|
|
}
|
|
bReturn = TRUE;
|
|
}
|
|
}
|
|
|
|
/* Releasing a pending lock */
|
|
else if (dwFileOffsetLow == (DWORD)PENDING_BYTE
|
|
&& nNumberOfBytesToUnlockLow == 1){
|
|
if (pFile->local.bPending){
|
|
pFile->local.bPending = FALSE;
|
|
pFile->shared->bPending = FALSE;
|
|
bReturn = TRUE;
|
|
}
|
|
}
|
|
/* Releasing a reserved lock */
|
|
else if (dwFileOffsetLow == (DWORD)RESERVED_BYTE
|
|
&& nNumberOfBytesToUnlockLow == 1){
|
|
if (pFile->local.bReserved) {
|
|
pFile->local.bReserved = FALSE;
|
|
pFile->shared->bReserved = FALSE;
|
|
bReturn = TRUE;
|
|
}
|
|
}
|
|
|
|
winceMutexRelease(pFile->hMutex);
|
|
return bReturn;
|
|
}
|
|
/*
|
|
** End of the special code for wince
|
|
*****************************************************************************/
|
|
#endif /* SQLITE_OS_WINCE */
|
|
|
|
/*
|
|
** Lock a file region.
|
|
*/
|
|
static BOOL winLockFile(
|
|
LPHANDLE phFile,
|
|
DWORD flags,
|
|
DWORD offsetLow,
|
|
DWORD offsetHigh,
|
|
DWORD numBytesLow,
|
|
DWORD numBytesHigh
|
|
){
|
|
#if SQLITE_OS_WINCE
|
|
/*
|
|
** NOTE: Windows CE is handled differently here due its lack of the Win32
|
|
** API LockFile.
|
|
*/
|
|
return winceLockFile(phFile, offsetLow, offsetHigh,
|
|
numBytesLow, numBytesHigh);
|
|
#else
|
|
if( osIsNT() ){
|
|
OVERLAPPED ovlp;
|
|
memset(&ovlp, 0, sizeof(OVERLAPPED));
|
|
ovlp.Offset = offsetLow;
|
|
ovlp.OffsetHigh = offsetHigh;
|
|
return osLockFileEx(*phFile, flags, 0, numBytesLow, numBytesHigh, &ovlp);
|
|
}else{
|
|
return osLockFile(*phFile, offsetLow, offsetHigh, numBytesLow,
|
|
numBytesHigh);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
** Unlock a file region.
|
|
*/
|
|
static BOOL winUnlockFile(
|
|
LPHANDLE phFile,
|
|
DWORD offsetLow,
|
|
DWORD offsetHigh,
|
|
DWORD numBytesLow,
|
|
DWORD numBytesHigh
|
|
){
|
|
#if SQLITE_OS_WINCE
|
|
/*
|
|
** NOTE: Windows CE is handled differently here due its lack of the Win32
|
|
** API UnlockFile.
|
|
*/
|
|
return winceUnlockFile(phFile, offsetLow, offsetHigh,
|
|
numBytesLow, numBytesHigh);
|
|
#else
|
|
if( osIsNT() ){
|
|
OVERLAPPED ovlp;
|
|
memset(&ovlp, 0, sizeof(OVERLAPPED));
|
|
ovlp.Offset = offsetLow;
|
|
ovlp.OffsetHigh = offsetHigh;
|
|
return osUnlockFileEx(*phFile, 0, numBytesLow, numBytesHigh, &ovlp);
|
|
}else{
|
|
return osUnlockFile(*phFile, offsetLow, offsetHigh, numBytesLow,
|
|
numBytesHigh);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
** The next group of routines implement the I/O methods specified
|
|
** by the sqlite3_io_methods object.
|
|
******************************************************************************/
|
|
|
|
/*
|
|
** Some Microsoft compilers lack this definition.
|
|
*/
|
|
#ifndef INVALID_SET_FILE_POINTER
|
|
# define INVALID_SET_FILE_POINTER ((DWORD)-1)
|
|
#endif
|
|
|
|
/*
|
|
** Move the current position of the file handle passed as the first
|
|
** argument to offset iOffset within the file. If successful, return 0.
|
|
** Otherwise, set pFile->lastErrno and return non-zero.
|
|
*/
|
|
static int winSeekFile(winFile *pFile, sqlite3_int64 iOffset){
|
|
#if !SQLITE_OS_WINRT
|
|
LONG upperBits; /* Most sig. 32 bits of new offset */
|
|
LONG lowerBits; /* Least sig. 32 bits of new offset */
|
|
DWORD dwRet; /* Value returned by SetFilePointer() */
|
|
DWORD lastErrno; /* Value returned by GetLastError() */
|
|
|
|
OSTRACE(("SEEK file=%p, offset=%lld\n", pFile->h, iOffset));
|
|
|
|
upperBits = (LONG)((iOffset>>32) & 0x7fffffff);
|
|
lowerBits = (LONG)(iOffset & 0xffffffff);
|
|
|
|
/* API oddity: If successful, SetFilePointer() returns a dword
|
|
** containing the lower 32-bits of the new file-offset. Or, if it fails,
|
|
** it returns INVALID_SET_FILE_POINTER. However according to MSDN,
|
|
** INVALID_SET_FILE_POINTER may also be a valid new offset. So to determine
|
|
** whether an error has actually occurred, it is also necessary to call
|
|
** GetLastError().
|
|
*/
|
|
dwRet = osSetFilePointer(pFile->h, lowerBits, &upperBits, FILE_BEGIN);
|
|
|
|
if( (dwRet==INVALID_SET_FILE_POINTER
|
|
&& ((lastErrno = osGetLastError())!=NO_ERROR)) ){
|
|
pFile->lastErrno = lastErrno;
|
|
winLogError(SQLITE_IOERR_SEEK, pFile->lastErrno,
|
|
"winSeekFile", pFile->zPath);
|
|
OSTRACE(("SEEK file=%p, rc=SQLITE_IOERR_SEEK\n", pFile->h));
|
|
return 1;
|
|
}
|
|
|
|
OSTRACE(("SEEK file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return 0;
|
|
#else
|
|
/*
|
|
** Same as above, except that this implementation works for WinRT.
|
|
*/
|
|
|
|
LARGE_INTEGER x; /* The new offset */
|
|
BOOL bRet; /* Value returned by SetFilePointerEx() */
|
|
|
|
x.QuadPart = iOffset;
|
|
bRet = osSetFilePointerEx(pFile->h, x, 0, FILE_BEGIN);
|
|
|
|
if(!bRet){
|
|
pFile->lastErrno = osGetLastError();
|
|
winLogError(SQLITE_IOERR_SEEK, pFile->lastErrno,
|
|
"winSeekFile", pFile->zPath);
|
|
OSTRACE(("SEEK file=%p, rc=SQLITE_IOERR_SEEK\n", pFile->h));
|
|
return 1;
|
|
}
|
|
|
|
OSTRACE(("SEEK file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
/* Forward references to VFS helper methods used for memory mapped files */
|
|
static int winMapfile(winFile*, sqlite3_int64);
|
|
static int winUnmapfile(winFile*);
|
|
#endif
|
|
|
|
/*
|
|
** Close a file.
|
|
**
|
|
** It is reported that an attempt to close a handle might sometimes
|
|
** fail. This is a very unreasonable result, but Windows is notorious
|
|
** for being unreasonable so I do not doubt that it might happen. If
|
|
** the close fails, we pause for 100 milliseconds and try again. As
|
|
** many as MX_CLOSE_ATTEMPT attempts to close the handle are made before
|
|
** giving up and returning an error.
|
|
*/
|
|
#define MX_CLOSE_ATTEMPT 3
|
|
static int winClose(sqlite3_file *id){
|
|
int rc, cnt = 0;
|
|
winFile *pFile = (winFile*)id;
|
|
|
|
assert( id!=0 );
|
|
#ifndef SQLITE_OMIT_WAL
|
|
assert( pFile->pShm==0 );
|
|
#endif
|
|
assert( pFile->h!=NULL && pFile->h!=INVALID_HANDLE_VALUE );
|
|
OSTRACE(("CLOSE pid=%lu, pFile=%p, file=%p\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
winUnmapfile(pFile);
|
|
#endif
|
|
|
|
do{
|
|
rc = osCloseHandle(pFile->h);
|
|
/* SimulateIOError( rc=0; cnt=MX_CLOSE_ATTEMPT; ); */
|
|
}while( rc==0 && ++cnt < MX_CLOSE_ATTEMPT && (sqlite3_win32_sleep(100), 1) );
|
|
#if SQLITE_OS_WINCE
|
|
#define WINCE_DELETION_ATTEMPTS 3
|
|
winceDestroyLock(pFile);
|
|
if( pFile->zDeleteOnClose ){
|
|
int cnt = 0;
|
|
while(
|
|
osDeleteFileW(pFile->zDeleteOnClose)==0
|
|
&& osGetFileAttributesW(pFile->zDeleteOnClose)!=0xffffffff
|
|
&& cnt++ < WINCE_DELETION_ATTEMPTS
|
|
){
|
|
sqlite3_win32_sleep(100); /* Wait a little before trying again */
|
|
}
|
|
sqlite3_free(pFile->zDeleteOnClose);
|
|
}
|
|
#endif
|
|
if( rc ){
|
|
pFile->h = NULL;
|
|
}
|
|
OpenCounter(-1);
|
|
OSTRACE(("CLOSE pid=%lu, pFile=%p, file=%p, rc=%s\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h, rc ? "ok" : "failed"));
|
|
return rc ? SQLITE_OK
|
|
: winLogError(SQLITE_IOERR_CLOSE, osGetLastError(),
|
|
"winClose", pFile->zPath);
|
|
}
|
|
|
|
/*
|
|
** Read data from a file into a buffer. Return SQLITE_OK if all
|
|
** bytes were read successfully and SQLITE_IOERR if anything goes
|
|
** wrong.
|
|
*/
|
|
static int winRead(
|
|
sqlite3_file *id, /* File to read from */
|
|
void *pBuf, /* Write content into this buffer */
|
|
int amt, /* Number of bytes to read */
|
|
sqlite3_int64 offset /* Begin reading at this offset */
|
|
){
|
|
#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
|
|
OVERLAPPED overlapped; /* The offset for ReadFile. */
|
|
#endif
|
|
winFile *pFile = (winFile*)id; /* file handle */
|
|
DWORD nRead; /* Number of bytes actually read from file */
|
|
int nRetry = 0; /* Number of retrys */
|
|
|
|
assert( id!=0 );
|
|
assert( amt>0 );
|
|
assert( offset>=0 );
|
|
SimulateIOError(return SQLITE_IOERR_READ);
|
|
OSTRACE(("READ pid=%lu, pFile=%p, file=%p, buffer=%p, amount=%d, "
|
|
"offset=%lld, lock=%d\n", osGetCurrentProcessId(), pFile,
|
|
pFile->h, pBuf, amt, offset, pFile->locktype));
|
|
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
/* Deal with as much of this read request as possible by transfering
|
|
** data from the memory mapping using memcpy(). */
|
|
if( offset<pFile->mmapSize ){
|
|
if( offset+amt <= pFile->mmapSize ){
|
|
memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], amt);
|
|
OSTRACE(("READ-MMAP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return SQLITE_OK;
|
|
}else{
|
|
int nCopy = (int)(pFile->mmapSize - offset);
|
|
memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], nCopy);
|
|
pBuf = &((u8 *)pBuf)[nCopy];
|
|
amt -= nCopy;
|
|
offset += nCopy;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
|
|
if( winSeekFile(pFile, offset) ){
|
|
OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_FULL\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return SQLITE_FULL;
|
|
}
|
|
while( !osReadFile(pFile->h, pBuf, amt, &nRead, 0) ){
|
|
#else
|
|
memset(&overlapped, 0, sizeof(OVERLAPPED));
|
|
overlapped.Offset = (LONG)(offset & 0xffffffff);
|
|
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
|
|
while( !osReadFile(pFile->h, pBuf, amt, &nRead, &overlapped) &&
|
|
osGetLastError()!=ERROR_HANDLE_EOF ){
|
|
#endif
|
|
DWORD lastErrno;
|
|
if( winRetryIoerr(&nRetry, &lastErrno) ) continue;
|
|
pFile->lastErrno = lastErrno;
|
|
OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_READ\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return winLogError(SQLITE_IOERR_READ, pFile->lastErrno,
|
|
"winRead", pFile->zPath);
|
|
}
|
|
winLogIoerr(nRetry, __LINE__);
|
|
if( nRead<(DWORD)amt ){
|
|
/* Unread parts of the buffer must be zero-filled */
|
|
memset(&((char*)pBuf)[nRead], 0, amt-nRead);
|
|
OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_SHORT_READ\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return SQLITE_IOERR_SHORT_READ;
|
|
}
|
|
|
|
OSTRACE(("READ pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Write data from a buffer into a file. Return SQLITE_OK on success
|
|
** or some other error code on failure.
|
|
*/
|
|
static int winWrite(
|
|
sqlite3_file *id, /* File to write into */
|
|
const void *pBuf, /* The bytes to be written */
|
|
int amt, /* Number of bytes to write */
|
|
sqlite3_int64 offset /* Offset into the file to begin writing at */
|
|
){
|
|
int rc = 0; /* True if error has occurred, else false */
|
|
winFile *pFile = (winFile*)id; /* File handle */
|
|
int nRetry = 0; /* Number of retries */
|
|
|
|
assert( amt>0 );
|
|
assert( pFile );
|
|
SimulateIOError(return SQLITE_IOERR_WRITE);
|
|
SimulateDiskfullError(return SQLITE_FULL);
|
|
|
|
OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, buffer=%p, amount=%d, "
|
|
"offset=%lld, lock=%d\n", osGetCurrentProcessId(), pFile,
|
|
pFile->h, pBuf, amt, offset, pFile->locktype));
|
|
|
|
#if defined(SQLITE_MMAP_READWRITE) && SQLITE_MAX_MMAP_SIZE>0
|
|
/* Deal with as much of this write request as possible by transfering
|
|
** data from the memory mapping using memcpy(). */
|
|
if( offset<pFile->mmapSize ){
|
|
if( offset+amt <= pFile->mmapSize ){
|
|
memcpy(&((u8 *)(pFile->pMapRegion))[offset], pBuf, amt);
|
|
OSTRACE(("WRITE-MMAP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return SQLITE_OK;
|
|
}else{
|
|
int nCopy = (int)(pFile->mmapSize - offset);
|
|
memcpy(&((u8 *)(pFile->pMapRegion))[offset], pBuf, nCopy);
|
|
pBuf = &((u8 *)pBuf)[nCopy];
|
|
amt -= nCopy;
|
|
offset += nCopy;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
|
|
rc = winSeekFile(pFile, offset);
|
|
if( rc==0 ){
|
|
#else
|
|
{
|
|
#endif
|
|
#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
|
|
OVERLAPPED overlapped; /* The offset for WriteFile. */
|
|
#endif
|
|
u8 *aRem = (u8 *)pBuf; /* Data yet to be written */
|
|
int nRem = amt; /* Number of bytes yet to be written */
|
|
DWORD nWrite; /* Bytes written by each WriteFile() call */
|
|
DWORD lastErrno = NO_ERROR; /* Value returned by GetLastError() */
|
|
|
|
#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
|
|
memset(&overlapped, 0, sizeof(OVERLAPPED));
|
|
overlapped.Offset = (LONG)(offset & 0xffffffff);
|
|
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
|
|
#endif
|
|
|
|
while( nRem>0 ){
|
|
#if SQLITE_OS_WINCE || defined(SQLITE_WIN32_NO_OVERLAPPED)
|
|
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, 0) ){
|
|
#else
|
|
if( !osWriteFile(pFile->h, aRem, nRem, &nWrite, &overlapped) ){
|
|
#endif
|
|
if( winRetryIoerr(&nRetry, &lastErrno) ) continue;
|
|
break;
|
|
}
|
|
assert( nWrite==0 || nWrite<=(DWORD)nRem );
|
|
if( nWrite==0 || nWrite>(DWORD)nRem ){
|
|
lastErrno = osGetLastError();
|
|
break;
|
|
}
|
|
#if !SQLITE_OS_WINCE && !defined(SQLITE_WIN32_NO_OVERLAPPED)
|
|
offset += nWrite;
|
|
overlapped.Offset = (LONG)(offset & 0xffffffff);
|
|
overlapped.OffsetHigh = (LONG)((offset>>32) & 0x7fffffff);
|
|
#endif
|
|
aRem += nWrite;
|
|
nRem -= nWrite;
|
|
}
|
|
if( nRem>0 ){
|
|
pFile->lastErrno = lastErrno;
|
|
rc = 1;
|
|
}
|
|
}
|
|
|
|
if( rc ){
|
|
if( ( pFile->lastErrno==ERROR_HANDLE_DISK_FULL )
|
|
|| ( pFile->lastErrno==ERROR_DISK_FULL )){
|
|
OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_FULL\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return winLogError(SQLITE_FULL, pFile->lastErrno,
|
|
"winWrite1", pFile->zPath);
|
|
}
|
|
OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_WRITE\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return winLogError(SQLITE_IOERR_WRITE, pFile->lastErrno,
|
|
"winWrite2", pFile->zPath);
|
|
}else{
|
|
winLogIoerr(nRetry, __LINE__);
|
|
}
|
|
OSTRACE(("WRITE pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Truncate an open file to a specified size
|
|
*/
|
|
static int winTruncate(sqlite3_file *id, sqlite3_int64 nByte){
|
|
winFile *pFile = (winFile*)id; /* File handle object */
|
|
int rc = SQLITE_OK; /* Return code for this function */
|
|
DWORD lastErrno;
|
|
|
|
assert( pFile );
|
|
SimulateIOError(return SQLITE_IOERR_TRUNCATE);
|
|
OSTRACE(("TRUNCATE pid=%lu, pFile=%p, file=%p, size=%lld, lock=%d\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h, nByte, pFile->locktype));
|
|
|
|
/* If the user has configured a chunk-size for this file, truncate the
|
|
** file so that it consists of an integer number of chunks (i.e. the
|
|
** actual file size after the operation may be larger than the requested
|
|
** size).
|
|
*/
|
|
if( pFile->szChunk>0 ){
|
|
nByte = ((nByte + pFile->szChunk - 1)/pFile->szChunk) * pFile->szChunk;
|
|
}
|
|
|
|
/* SetEndOfFile() returns non-zero when successful, or zero when it fails. */
|
|
if( winSeekFile(pFile, nByte) ){
|
|
rc = winLogError(SQLITE_IOERR_TRUNCATE, pFile->lastErrno,
|
|
"winTruncate1", pFile->zPath);
|
|
}else if( 0==osSetEndOfFile(pFile->h) &&
|
|
((lastErrno = osGetLastError())!=ERROR_USER_MAPPED_FILE) ){
|
|
pFile->lastErrno = lastErrno;
|
|
rc = winLogError(SQLITE_IOERR_TRUNCATE, pFile->lastErrno,
|
|
"winTruncate2", pFile->zPath);
|
|
}
|
|
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
/* If the file was truncated to a size smaller than the currently
|
|
** mapped region, reduce the effective mapping size as well. SQLite will
|
|
** use read() and write() to access data beyond this point from now on.
|
|
*/
|
|
if( pFile->pMapRegion && nByte<pFile->mmapSize ){
|
|
pFile->mmapSize = nByte;
|
|
}
|
|
#endif
|
|
|
|
OSTRACE(("TRUNCATE pid=%lu, pFile=%p, file=%p, rc=%s\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
|
|
#ifdef SQLITE_TEST
|
|
/*
|
|
** Count the number of fullsyncs and normal syncs. This is used to test
|
|
** that syncs and fullsyncs are occuring at the right times.
|
|
*/
|
|
int sqlite3_sync_count = 0;
|
|
int sqlite3_fullsync_count = 0;
|
|
#endif
|
|
|
|
/*
|
|
** Make sure all writes to a particular file are committed to disk.
|
|
*/
|
|
static int winSync(sqlite3_file *id, int flags){
|
|
#ifndef SQLITE_NO_SYNC
|
|
/*
|
|
** Used only when SQLITE_NO_SYNC is not defined.
|
|
*/
|
|
BOOL rc;
|
|
#endif
|
|
#if !defined(NDEBUG) || !defined(SQLITE_NO_SYNC) || \
|
|
defined(SQLITE_HAVE_OS_TRACE)
|
|
/*
|
|
** Used when SQLITE_NO_SYNC is not defined and by the assert() and/or
|
|
** OSTRACE() macros.
|
|
*/
|
|
winFile *pFile = (winFile*)id;
|
|
#else
|
|
UNUSED_PARAMETER(id);
|
|
#endif
|
|
|
|
assert( pFile );
|
|
/* Check that one of SQLITE_SYNC_NORMAL or FULL was passed */
|
|
assert((flags&0x0F)==SQLITE_SYNC_NORMAL
|
|
|| (flags&0x0F)==SQLITE_SYNC_FULL
|
|
);
|
|
|
|
/* Unix cannot, but some systems may return SQLITE_FULL from here. This
|
|
** line is to test that doing so does not cause any problems.
|
|
*/
|
|
SimulateDiskfullError( return SQLITE_FULL );
|
|
|
|
OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, flags=%x, lock=%d\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h, flags,
|
|
pFile->locktype));
|
|
|
|
#ifndef SQLITE_TEST
|
|
UNUSED_PARAMETER(flags);
|
|
#else
|
|
if( (flags&0x0F)==SQLITE_SYNC_FULL ){
|
|
sqlite3_fullsync_count++;
|
|
}
|
|
sqlite3_sync_count++;
|
|
#endif
|
|
|
|
/* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a
|
|
** no-op
|
|
*/
|
|
#ifdef SQLITE_NO_SYNC
|
|
OSTRACE(("SYNC-NOP pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return SQLITE_OK;
|
|
#else
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
if( pFile->pMapRegion ){
|
|
if( osFlushViewOfFile(pFile->pMapRegion, 0) ){
|
|
OSTRACE(("SYNC-MMAP pid=%lu, pFile=%p, pMapRegion=%p, "
|
|
"rc=SQLITE_OK\n", osGetCurrentProcessId(),
|
|
pFile, pFile->pMapRegion));
|
|
}else{
|
|
pFile->lastErrno = osGetLastError();
|
|
OSTRACE(("SYNC-MMAP pid=%lu, pFile=%p, pMapRegion=%p, "
|
|
"rc=SQLITE_IOERR_MMAP\n", osGetCurrentProcessId(),
|
|
pFile, pFile->pMapRegion));
|
|
return winLogError(SQLITE_IOERR_MMAP, pFile->lastErrno,
|
|
"winSync1", pFile->zPath);
|
|
}
|
|
}
|
|
#endif
|
|
rc = osFlushFileBuffers(pFile->h);
|
|
SimulateIOError( rc=FALSE );
|
|
if( rc ){
|
|
OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return SQLITE_OK;
|
|
}else{
|
|
pFile->lastErrno = osGetLastError();
|
|
OSTRACE(("SYNC pid=%lu, pFile=%p, file=%p, rc=SQLITE_IOERR_FSYNC\n",
|
|
osGetCurrentProcessId(), pFile, pFile->h));
|
|
return winLogError(SQLITE_IOERR_FSYNC, pFile->lastErrno,
|
|
"winSync2", pFile->zPath);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
** Determine the current size of a file in bytes
|
|
*/
|
|
static int winFileSize(sqlite3_file *id, sqlite3_int64 *pSize){
|
|
winFile *pFile = (winFile*)id;
|
|
int rc = SQLITE_OK;
|
|
|
|
assert( id!=0 );
|
|
assert( pSize!=0 );
|
|
SimulateIOError(return SQLITE_IOERR_FSTAT);
|
|
OSTRACE(("SIZE file=%p, pSize=%p\n", pFile->h, pSize));
|
|
|
|
#if SQLITE_OS_WINRT
|
|
{
|
|
FILE_STANDARD_INFO info;
|
|
if( osGetFileInformationByHandleEx(pFile->h, FileStandardInfo,
|
|
&info, sizeof(info)) ){
|
|
*pSize = info.EndOfFile.QuadPart;
|
|
}else{
|
|
pFile->lastErrno = osGetLastError();
|
|
rc = winLogError(SQLITE_IOERR_FSTAT, pFile->lastErrno,
|
|
"winFileSize", pFile->zPath);
|
|
}
|
|
}
|
|
#else
|
|
{
|
|
DWORD upperBits;
|
|
DWORD lowerBits;
|
|
DWORD lastErrno;
|
|
|
|
lowerBits = osGetFileSize(pFile->h, &upperBits);
|
|
*pSize = (((sqlite3_int64)upperBits)<<32) + lowerBits;
|
|
if( (lowerBits == INVALID_FILE_SIZE)
|
|
&& ((lastErrno = osGetLastError())!=NO_ERROR) ){
|
|
pFile->lastErrno = lastErrno;
|
|
rc = winLogError(SQLITE_IOERR_FSTAT, pFile->lastErrno,
|
|
"winFileSize", pFile->zPath);
|
|
}
|
|
}
|
|
#endif
|
|
OSTRACE(("SIZE file=%p, pSize=%p, *pSize=%lld, rc=%s\n",
|
|
pFile->h, pSize, *pSize, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** LOCKFILE_FAIL_IMMEDIATELY is undefined on some Windows systems.
|
|
*/
|
|
#ifndef LOCKFILE_FAIL_IMMEDIATELY
|
|
# define LOCKFILE_FAIL_IMMEDIATELY 1
|
|
#endif
|
|
|
|
#ifndef LOCKFILE_EXCLUSIVE_LOCK
|
|
# define LOCKFILE_EXCLUSIVE_LOCK 2
|
|
#endif
|
|
|
|
/*
|
|
** Historically, SQLite has used both the LockFile and LockFileEx functions.
|
|
** When the LockFile function was used, it was always expected to fail
|
|
** immediately if the lock could not be obtained. Also, it always expected to
|
|
** obtain an exclusive lock. These flags are used with the LockFileEx function
|
|
** and reflect those expectations; therefore, they should not be changed.
|
|
*/
|
|
#ifndef SQLITE_LOCKFILE_FLAGS
|
|
# define SQLITE_LOCKFILE_FLAGS (LOCKFILE_FAIL_IMMEDIATELY | \
|
|
LOCKFILE_EXCLUSIVE_LOCK)
|
|
#endif
|
|
|
|
/*
|
|
** Currently, SQLite never calls the LockFileEx function without wanting the
|
|
** call to fail immediately if the lock cannot be obtained.
|
|
*/
|
|
#ifndef SQLITE_LOCKFILEEX_FLAGS
|
|
# define SQLITE_LOCKFILEEX_FLAGS (LOCKFILE_FAIL_IMMEDIATELY)
|
|
#endif
|
|
|
|
/*
|
|
** Acquire a reader lock.
|
|
** Different API routines are called depending on whether or not this
|
|
** is Win9x or WinNT.
|
|
*/
|
|
static int winGetReadLock(winFile *pFile){
|
|
int res;
|
|
OSTRACE(("READ-LOCK file=%p, lock=%d\n", pFile->h, pFile->locktype));
|
|
if( osIsNT() ){
|
|
#if SQLITE_OS_WINCE
|
|
/*
|
|
** NOTE: Windows CE is handled differently here due its lack of the Win32
|
|
** API LockFileEx.
|
|
*/
|
|
res = winceLockFile(&pFile->h, SHARED_FIRST, 0, 1, 0);
|
|
#else
|
|
res = winLockFile(&pFile->h, SQLITE_LOCKFILEEX_FLAGS, SHARED_FIRST, 0,
|
|
SHARED_SIZE, 0);
|
|
#endif
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
int lk;
|
|
sqlite3_randomness(sizeof(lk), &lk);
|
|
pFile->sharedLockByte = (short)((lk & 0x7fffffff)%(SHARED_SIZE - 1));
|
|
res = winLockFile(&pFile->h, SQLITE_LOCKFILE_FLAGS,
|
|
SHARED_FIRST+pFile->sharedLockByte, 0, 1, 0);
|
|
}
|
|
#endif
|
|
if( res == 0 ){
|
|
pFile->lastErrno = osGetLastError();
|
|
/* No need to log a failure to lock */
|
|
}
|
|
OSTRACE(("READ-LOCK file=%p, result=%d\n", pFile->h, res));
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
** Undo a readlock
|
|
*/
|
|
static int winUnlockReadLock(winFile *pFile){
|
|
int res;
|
|
DWORD lastErrno;
|
|
OSTRACE(("READ-UNLOCK file=%p, lock=%d\n", pFile->h, pFile->locktype));
|
|
if( osIsNT() ){
|
|
res = winUnlockFile(&pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
res = winUnlockFile(&pFile->h, SHARED_FIRST+pFile->sharedLockByte, 0, 1, 0);
|
|
}
|
|
#endif
|
|
if( res==0 && ((lastErrno = osGetLastError())!=ERROR_NOT_LOCKED) ){
|
|
pFile->lastErrno = lastErrno;
|
|
winLogError(SQLITE_IOERR_UNLOCK, pFile->lastErrno,
|
|
"winUnlockReadLock", pFile->zPath);
|
|
}
|
|
OSTRACE(("READ-UNLOCK file=%p, result=%d\n", pFile->h, res));
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
** Lock the file with the lock specified by parameter locktype - one
|
|
** of the following:
|
|
**
|
|
** (1) SHARED_LOCK
|
|
** (2) RESERVED_LOCK
|
|
** (3) PENDING_LOCK
|
|
** (4) EXCLUSIVE_LOCK
|
|
**
|
|
** Sometimes when requesting one lock state, additional lock states
|
|
** are inserted in between. The locking might fail on one of the later
|
|
** transitions leaving the lock state different from what it started but
|
|
** still short of its goal. The following chart shows the allowed
|
|
** transitions and the inserted intermediate states:
|
|
**
|
|
** UNLOCKED -> SHARED
|
|
** SHARED -> RESERVED
|
|
** SHARED -> (PENDING) -> EXCLUSIVE
|
|
** RESERVED -> (PENDING) -> EXCLUSIVE
|
|
** PENDING -> EXCLUSIVE
|
|
**
|
|
** This routine will only increase a lock. The winUnlock() routine
|
|
** erases all locks at once and returns us immediately to locking level 0.
|
|
** It is not possible to lower the locking level one step at a time. You
|
|
** must go straight to locking level 0.
|
|
*/
|
|
static int winLock(sqlite3_file *id, int locktype){
|
|
int rc = SQLITE_OK; /* Return code from subroutines */
|
|
int res = 1; /* Result of a Windows lock call */
|
|
int newLocktype; /* Set pFile->locktype to this value before exiting */
|
|
int gotPendingLock = 0;/* True if we acquired a PENDING lock this time */
|
|
winFile *pFile = (winFile*)id;
|
|
DWORD lastErrno = NO_ERROR;
|
|
|
|
assert( id!=0 );
|
|
OSTRACE(("LOCK file=%p, oldLock=%d(%d), newLock=%d\n",
|
|
pFile->h, pFile->locktype, pFile->sharedLockByte, locktype));
|
|
|
|
/* If there is already a lock of this type or more restrictive on the
|
|
** OsFile, do nothing. Don't use the end_lock: exit path, as
|
|
** sqlite3OsEnterMutex() hasn't been called yet.
|
|
*/
|
|
if( pFile->locktype>=locktype ){
|
|
OSTRACE(("LOCK-HELD file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/* Do not allow any kind of write-lock on a read-only database
|
|
*/
|
|
if( (pFile->ctrlFlags & WINFILE_RDONLY)!=0 && locktype>=RESERVED_LOCK ){
|
|
return SQLITE_IOERR_LOCK;
|
|
}
|
|
|
|
/* Make sure the locking sequence is correct
|
|
*/
|
|
assert( pFile->locktype!=NO_LOCK || locktype==SHARED_LOCK );
|
|
assert( locktype!=PENDING_LOCK );
|
|
assert( locktype!=RESERVED_LOCK || pFile->locktype==SHARED_LOCK );
|
|
|
|
/* Lock the PENDING_LOCK byte if we need to acquire a PENDING lock or
|
|
** a SHARED lock. If we are acquiring a SHARED lock, the acquisition of
|
|
** the PENDING_LOCK byte is temporary.
|
|
*/
|
|
newLocktype = pFile->locktype;
|
|
if( (pFile->locktype==NO_LOCK)
|
|
|| ( (locktype==EXCLUSIVE_LOCK)
|
|
&& (pFile->locktype==RESERVED_LOCK))
|
|
){
|
|
int cnt = 3;
|
|
while( cnt-->0 && (res = winLockFile(&pFile->h, SQLITE_LOCKFILE_FLAGS,
|
|
PENDING_BYTE, 0, 1, 0))==0 ){
|
|
/* Try 3 times to get the pending lock. This is needed to work
|
|
** around problems caused by indexing and/or anti-virus software on
|
|
** Windows systems.
|
|
** If you are using this code as a model for alternative VFSes, do not
|
|
** copy this retry logic. It is a hack intended for Windows only.
|
|
*/
|
|
lastErrno = osGetLastError();
|
|
OSTRACE(("LOCK-PENDING-FAIL file=%p, count=%d, result=%d\n",
|
|
pFile->h, cnt, res));
|
|
if( lastErrno==ERROR_INVALID_HANDLE ){
|
|
pFile->lastErrno = lastErrno;
|
|
rc = SQLITE_IOERR_LOCK;
|
|
OSTRACE(("LOCK-FAIL file=%p, count=%d, rc=%s\n",
|
|
pFile->h, cnt, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
if( cnt ) sqlite3_win32_sleep(1);
|
|
}
|
|
gotPendingLock = res;
|
|
if( !res ){
|
|
lastErrno = osGetLastError();
|
|
}
|
|
}
|
|
|
|
/* Acquire a shared lock
|
|
*/
|
|
if( locktype==SHARED_LOCK && res ){
|
|
assert( pFile->locktype==NO_LOCK );
|
|
res = winGetReadLock(pFile);
|
|
if( res ){
|
|
newLocktype = SHARED_LOCK;
|
|
}else{
|
|
lastErrno = osGetLastError();
|
|
}
|
|
}
|
|
|
|
/* Acquire a RESERVED lock
|
|
*/
|
|
if( locktype==RESERVED_LOCK && res ){
|
|
assert( pFile->locktype==SHARED_LOCK );
|
|
res = winLockFile(&pFile->h, SQLITE_LOCKFILE_FLAGS, RESERVED_BYTE, 0, 1, 0);
|
|
if( res ){
|
|
newLocktype = RESERVED_LOCK;
|
|
}else{
|
|
lastErrno = osGetLastError();
|
|
}
|
|
}
|
|
|
|
/* Acquire a PENDING lock
|
|
*/
|
|
if( locktype==EXCLUSIVE_LOCK && res ){
|
|
newLocktype = PENDING_LOCK;
|
|
gotPendingLock = 0;
|
|
}
|
|
|
|
/* Acquire an EXCLUSIVE lock
|
|
*/
|
|
if( locktype==EXCLUSIVE_LOCK && res ){
|
|
assert( pFile->locktype>=SHARED_LOCK );
|
|
res = winUnlockReadLock(pFile);
|
|
res = winLockFile(&pFile->h, SQLITE_LOCKFILE_FLAGS, SHARED_FIRST, 0,
|
|
SHARED_SIZE, 0);
|
|
if( res ){
|
|
newLocktype = EXCLUSIVE_LOCK;
|
|
}else{
|
|
lastErrno = osGetLastError();
|
|
winGetReadLock(pFile);
|
|
}
|
|
}
|
|
|
|
/* If we are holding a PENDING lock that ought to be released, then
|
|
** release it now.
|
|
*/
|
|
if( gotPendingLock && locktype==SHARED_LOCK ){
|
|
winUnlockFile(&pFile->h, PENDING_BYTE, 0, 1, 0);
|
|
}
|
|
|
|
/* Update the state of the lock has held in the file descriptor then
|
|
** return the appropriate result code.
|
|
*/
|
|
if( res ){
|
|
rc = SQLITE_OK;
|
|
}else{
|
|
pFile->lastErrno = lastErrno;
|
|
rc = SQLITE_BUSY;
|
|
OSTRACE(("LOCK-FAIL file=%p, wanted=%d, got=%d\n",
|
|
pFile->h, locktype, newLocktype));
|
|
}
|
|
pFile->locktype = (u8)newLocktype;
|
|
OSTRACE(("LOCK file=%p, lock=%d, rc=%s\n",
|
|
pFile->h, pFile->locktype, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** This routine checks if there is a RESERVED lock held on the specified
|
|
** file by this or any other process. If such a lock is held, return
|
|
** non-zero, otherwise zero.
|
|
*/
|
|
static int winCheckReservedLock(sqlite3_file *id, int *pResOut){
|
|
int res;
|
|
winFile *pFile = (winFile*)id;
|
|
|
|
SimulateIOError( return SQLITE_IOERR_CHECKRESERVEDLOCK; );
|
|
OSTRACE(("TEST-WR-LOCK file=%p, pResOut=%p\n", pFile->h, pResOut));
|
|
|
|
assert( id!=0 );
|
|
if( pFile->locktype>=RESERVED_LOCK ){
|
|
res = 1;
|
|
OSTRACE(("TEST-WR-LOCK file=%p, result=%d (local)\n", pFile->h, res));
|
|
}else{
|
|
res = winLockFile(&pFile->h, SQLITE_LOCKFILEEX_FLAGS,RESERVED_BYTE,0,1,0);
|
|
if( res ){
|
|
winUnlockFile(&pFile->h, RESERVED_BYTE, 0, 1, 0);
|
|
}
|
|
res = !res;
|
|
OSTRACE(("TEST-WR-LOCK file=%p, result=%d (remote)\n", pFile->h, res));
|
|
}
|
|
*pResOut = res;
|
|
OSTRACE(("TEST-WR-LOCK file=%p, pResOut=%p, *pResOut=%d, rc=SQLITE_OK\n",
|
|
pFile->h, pResOut, *pResOut));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Lower the locking level on file descriptor id to locktype. locktype
|
|
** must be either NO_LOCK or SHARED_LOCK.
|
|
**
|
|
** If the locking level of the file descriptor is already at or below
|
|
** the requested locking level, this routine is a no-op.
|
|
**
|
|
** It is not possible for this routine to fail if the second argument
|
|
** is NO_LOCK. If the second argument is SHARED_LOCK then this routine
|
|
** might return SQLITE_IOERR;
|
|
*/
|
|
static int winUnlock(sqlite3_file *id, int locktype){
|
|
int type;
|
|
winFile *pFile = (winFile*)id;
|
|
int rc = SQLITE_OK;
|
|
assert( pFile!=0 );
|
|
assert( locktype<=SHARED_LOCK );
|
|
OSTRACE(("UNLOCK file=%p, oldLock=%d(%d), newLock=%d\n",
|
|
pFile->h, pFile->locktype, pFile->sharedLockByte, locktype));
|
|
type = pFile->locktype;
|
|
if( type>=EXCLUSIVE_LOCK ){
|
|
winUnlockFile(&pFile->h, SHARED_FIRST, 0, SHARED_SIZE, 0);
|
|
if( locktype==SHARED_LOCK && !winGetReadLock(pFile) ){
|
|
/* This should never happen. We should always be able to
|
|
** reacquire the read lock */
|
|
rc = winLogError(SQLITE_IOERR_UNLOCK, osGetLastError(),
|
|
"winUnlock", pFile->zPath);
|
|
}
|
|
}
|
|
if( type>=RESERVED_LOCK ){
|
|
winUnlockFile(&pFile->h, RESERVED_BYTE, 0, 1, 0);
|
|
}
|
|
if( locktype==NO_LOCK && type>=SHARED_LOCK ){
|
|
winUnlockReadLock(pFile);
|
|
}
|
|
if( type>=PENDING_LOCK ){
|
|
winUnlockFile(&pFile->h, PENDING_BYTE, 0, 1, 0);
|
|
}
|
|
pFile->locktype = (u8)locktype;
|
|
OSTRACE(("UNLOCK file=%p, lock=%d, rc=%s\n",
|
|
pFile->h, pFile->locktype, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** If *pArg is initially negative then this is a query. Set *pArg to
|
|
** 1 or 0 depending on whether or not bit mask of pFile->ctrlFlags is set.
|
|
**
|
|
** If *pArg is 0 or 1, then clear or set the mask bit of pFile->ctrlFlags.
|
|
*/
|
|
static void winModeBit(winFile *pFile, unsigned char mask, int *pArg){
|
|
if( *pArg<0 ){
|
|
*pArg = (pFile->ctrlFlags & mask)!=0;
|
|
}else if( (*pArg)==0 ){
|
|
pFile->ctrlFlags &= ~mask;
|
|
}else{
|
|
pFile->ctrlFlags |= mask;
|
|
}
|
|
}
|
|
|
|
/* Forward references to VFS helper methods used for temporary files */
|
|
static int winGetTempname(sqlite3_vfs *, char **);
|
|
static int winIsDir(const void *);
|
|
static BOOL winIsDriveLetterAndColon(const char *);
|
|
|
|
/*
|
|
** Control and query of the open file handle.
|
|
*/
|
|
static int winFileControl(sqlite3_file *id, int op, void *pArg){
|
|
winFile *pFile = (winFile*)id;
|
|
OSTRACE(("FCNTL file=%p, op=%d, pArg=%p\n", pFile->h, op, pArg));
|
|
switch( op ){
|
|
case SQLITE_FCNTL_LOCKSTATE: {
|
|
*(int*)pArg = pFile->locktype;
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
case SQLITE_LAST_ERRNO: {
|
|
*(int*)pArg = (int)pFile->lastErrno;
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
case SQLITE_FCNTL_CHUNK_SIZE: {
|
|
pFile->szChunk = *(int *)pArg;
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
case SQLITE_FCNTL_SIZE_HINT: {
|
|
if( pFile->szChunk>0 ){
|
|
sqlite3_int64 oldSz;
|
|
int rc = winFileSize(id, &oldSz);
|
|
if( rc==SQLITE_OK ){
|
|
sqlite3_int64 newSz = *(sqlite3_int64*)pArg;
|
|
if( newSz>oldSz ){
|
|
SimulateIOErrorBenign(1);
|
|
rc = winTruncate(id, newSz);
|
|
SimulateIOErrorBenign(0);
|
|
}
|
|
}
|
|
OSTRACE(("FCNTL file=%p, rc=%s\n", pFile->h, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
case SQLITE_FCNTL_PERSIST_WAL: {
|
|
winModeBit(pFile, WINFILE_PERSIST_WAL, (int*)pArg);
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
case SQLITE_FCNTL_POWERSAFE_OVERWRITE: {
|
|
winModeBit(pFile, WINFILE_PSOW, (int*)pArg);
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
case SQLITE_FCNTL_VFSNAME: {
|
|
*(char**)pArg = sqlite3_mprintf("%s", pFile->pVfs->zName);
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
case SQLITE_FCNTL_WIN32_AV_RETRY: {
|
|
int *a = (int*)pArg;
|
|
if( a[0]>0 ){
|
|
winIoerrRetry = a[0];
|
|
}else{
|
|
a[0] = winIoerrRetry;
|
|
}
|
|
if( a[1]>0 ){
|
|
winIoerrRetryDelay = a[1];
|
|
}else{
|
|
a[1] = winIoerrRetryDelay;
|
|
}
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_OK\n", pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
#ifdef SQLITE_TEST
|
|
case SQLITE_FCNTL_WIN32_SET_HANDLE: {
|
|
LPHANDLE phFile = (LPHANDLE)pArg;
|
|
HANDLE hOldFile = pFile->h;
|
|
pFile->h = *phFile;
|
|
*phFile = hOldFile;
|
|
OSTRACE(("FCNTL oldFile=%p, newFile=%p, rc=SQLITE_OK\n",
|
|
hOldFile, pFile->h));
|
|
return SQLITE_OK;
|
|
}
|
|
#endif
|
|
case SQLITE_FCNTL_TEMPFILENAME: {
|
|
char *zTFile = 0;
|
|
int rc = winGetTempname(pFile->pVfs, &zTFile);
|
|
if( rc==SQLITE_OK ){
|
|
*(char**)pArg = zTFile;
|
|
}
|
|
OSTRACE(("FCNTL file=%p, rc=%s\n", pFile->h, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
case SQLITE_FCNTL_MMAP_SIZE: {
|
|
i64 newLimit = *(i64*)pArg;
|
|
int rc = SQLITE_OK;
|
|
if( newLimit>sqlite3GlobalConfig.mxMmap ){
|
|
newLimit = sqlite3GlobalConfig.mxMmap;
|
|
}
|
|
*(i64*)pArg = pFile->mmapSizeMax;
|
|
if( newLimit>=0 && newLimit!=pFile->mmapSizeMax && pFile->nFetchOut==0 ){
|
|
pFile->mmapSizeMax = newLimit;
|
|
if( pFile->mmapSize>0 ){
|
|
winUnmapfile(pFile);
|
|
rc = winMapfile(pFile, -1);
|
|
}
|
|
}
|
|
OSTRACE(("FCNTL file=%p, rc=%s\n", pFile->h, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
#endif
|
|
}
|
|
OSTRACE(("FCNTL file=%p, rc=SQLITE_NOTFOUND\n", pFile->h));
|
|
return SQLITE_NOTFOUND;
|
|
}
|
|
|
|
/*
|
|
** Return the sector size in bytes of the underlying block device for
|
|
** the specified file. This is almost always 512 bytes, but may be
|
|
** larger for some devices.
|
|
**
|
|
** SQLite code assumes this function cannot fail. It also assumes that
|
|
** if two files are created in the same file-system directory (i.e.
|
|
** a database and its journal file) that the sector size will be the
|
|
** same for both.
|
|
*/
|
|
static int winSectorSize(sqlite3_file *id){
|
|
(void)id;
|
|
return SQLITE_DEFAULT_SECTOR_SIZE;
|
|
}
|
|
|
|
/*
|
|
** Return a vector of device characteristics.
|
|
*/
|
|
static int winDeviceCharacteristics(sqlite3_file *id){
|
|
winFile *p = (winFile*)id;
|
|
return SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN |
|
|
((p->ctrlFlags & WINFILE_PSOW)?SQLITE_IOCAP_POWERSAFE_OVERWRITE:0);
|
|
}
|
|
|
|
/*
|
|
** Windows will only let you create file view mappings
|
|
** on allocation size granularity boundaries.
|
|
** During sqlite3_os_init() we do a GetSystemInfo()
|
|
** to get the granularity size.
|
|
*/
|
|
static SYSTEM_INFO winSysInfo;
|
|
|
|
#ifndef SQLITE_OMIT_WAL
|
|
|
|
/*
|
|
** Helper functions to obtain and relinquish the global mutex. The
|
|
** global mutex is used to protect the winLockInfo objects used by
|
|
** this file, all of which may be shared by multiple threads.
|
|
**
|
|
** Function winShmMutexHeld() is used to assert() that the global mutex
|
|
** is held when required. This function is only used as part of assert()
|
|
** statements. e.g.
|
|
**
|
|
** winShmEnterMutex()
|
|
** assert( winShmMutexHeld() );
|
|
** winShmLeaveMutex()
|
|
*/
|
|
static void winShmEnterMutex(void){
|
|
sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1));
|
|
}
|
|
static void winShmLeaveMutex(void){
|
|
sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1));
|
|
}
|
|
#ifndef NDEBUG
|
|
static int winShmMutexHeld(void) {
|
|
return sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_VFS1));
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
** Object used to represent a single file opened and mmapped to provide
|
|
** shared memory. When multiple threads all reference the same
|
|
** log-summary, each thread has its own winFile object, but they all
|
|
** point to a single instance of this object. In other words, each
|
|
** log-summary is opened only once per process.
|
|
**
|
|
** winShmMutexHeld() must be true when creating or destroying
|
|
** this object or while reading or writing the following fields:
|
|
**
|
|
** nRef
|
|
** pNext
|
|
**
|
|
** The following fields are read-only after the object is created:
|
|
**
|
|
** fid
|
|
** zFilename
|
|
**
|
|
** Either winShmNode.mutex must be held or winShmNode.nRef==0 and
|
|
** winShmMutexHeld() is true when reading or writing any other field
|
|
** in this structure.
|
|
**
|
|
*/
|
|
struct winShmNode {
|
|
sqlite3_mutex *mutex; /* Mutex to access this object */
|
|
char *zFilename; /* Name of the file */
|
|
winFile hFile; /* File handle from winOpen */
|
|
|
|
int szRegion; /* Size of shared-memory regions */
|
|
int nRegion; /* Size of array apRegion */
|
|
struct ShmRegion {
|
|
HANDLE hMap; /* File handle from CreateFileMapping */
|
|
void *pMap;
|
|
} *aRegion;
|
|
DWORD lastErrno; /* The Windows errno from the last I/O error */
|
|
|
|
int nRef; /* Number of winShm objects pointing to this */
|
|
winShm *pFirst; /* All winShm objects pointing to this */
|
|
winShmNode *pNext; /* Next in list of all winShmNode objects */
|
|
#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE)
|
|
u8 nextShmId; /* Next available winShm.id value */
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
** A global array of all winShmNode objects.
|
|
**
|
|
** The winShmMutexHeld() must be true while reading or writing this list.
|
|
*/
|
|
static winShmNode *winShmNodeList = 0;
|
|
|
|
/*
|
|
** Structure used internally by this VFS to record the state of an
|
|
** open shared memory connection.
|
|
**
|
|
** The following fields are initialized when this object is created and
|
|
** are read-only thereafter:
|
|
**
|
|
** winShm.pShmNode
|
|
** winShm.id
|
|
**
|
|
** All other fields are read/write. The winShm.pShmNode->mutex must be held
|
|
** while accessing any read/write fields.
|
|
*/
|
|
struct winShm {
|
|
winShmNode *pShmNode; /* The underlying winShmNode object */
|
|
winShm *pNext; /* Next winShm with the same winShmNode */
|
|
u8 hasMutex; /* True if holding the winShmNode mutex */
|
|
u16 sharedMask; /* Mask of shared locks held */
|
|
u16 exclMask; /* Mask of exclusive locks held */
|
|
#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE)
|
|
u8 id; /* Id of this connection with its winShmNode */
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
** Constants used for locking
|
|
*/
|
|
#define WIN_SHM_BASE ((22+SQLITE_SHM_NLOCK)*4) /* first lock byte */
|
|
#define WIN_SHM_DMS (WIN_SHM_BASE+SQLITE_SHM_NLOCK) /* deadman switch */
|
|
|
|
/*
|
|
** Apply advisory locks for all n bytes beginning at ofst.
|
|
*/
|
|
#define _SHM_UNLCK 1
|
|
#define _SHM_RDLCK 2
|
|
#define _SHM_WRLCK 3
|
|
static int winShmSystemLock(
|
|
winShmNode *pFile, /* Apply locks to this open shared-memory segment */
|
|
int lockType, /* _SHM_UNLCK, _SHM_RDLCK, or _SHM_WRLCK */
|
|
int ofst, /* Offset to first byte to be locked/unlocked */
|
|
int nByte /* Number of bytes to lock or unlock */
|
|
){
|
|
int rc = 0; /* Result code form Lock/UnlockFileEx() */
|
|
|
|
/* Access to the winShmNode object is serialized by the caller */
|
|
assert( sqlite3_mutex_held(pFile->mutex) || pFile->nRef==0 );
|
|
|
|
OSTRACE(("SHM-LOCK file=%p, lock=%d, offset=%d, size=%d\n",
|
|
pFile->hFile.h, lockType, ofst, nByte));
|
|
|
|
/* Release/Acquire the system-level lock */
|
|
if( lockType==_SHM_UNLCK ){
|
|
rc = winUnlockFile(&pFile->hFile.h, ofst, 0, nByte, 0);
|
|
}else{
|
|
/* Initialize the locking parameters */
|
|
DWORD dwFlags = LOCKFILE_FAIL_IMMEDIATELY;
|
|
if( lockType == _SHM_WRLCK ) dwFlags |= LOCKFILE_EXCLUSIVE_LOCK;
|
|
rc = winLockFile(&pFile->hFile.h, dwFlags, ofst, 0, nByte, 0);
|
|
}
|
|
|
|
if( rc!= 0 ){
|
|
rc = SQLITE_OK;
|
|
}else{
|
|
pFile->lastErrno = osGetLastError();
|
|
rc = SQLITE_BUSY;
|
|
}
|
|
|
|
OSTRACE(("SHM-LOCK file=%p, func=%s, errno=%lu, rc=%s\n",
|
|
pFile->hFile.h, (lockType == _SHM_UNLCK) ? "winUnlockFile" :
|
|
"winLockFile", pFile->lastErrno, sqlite3ErrName(rc)));
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Forward references to VFS methods */
|
|
static int winOpen(sqlite3_vfs*,const char*,sqlite3_file*,int,int*);
|
|
static int winDelete(sqlite3_vfs *,const char*,int);
|
|
|
|
/*
|
|
** Purge the winShmNodeList list of all entries with winShmNode.nRef==0.
|
|
**
|
|
** This is not a VFS shared-memory method; it is a utility function called
|
|
** by VFS shared-memory methods.
|
|
*/
|
|
static void winShmPurge(sqlite3_vfs *pVfs, int deleteFlag){
|
|
winShmNode **pp;
|
|
winShmNode *p;
|
|
assert( winShmMutexHeld() );
|
|
OSTRACE(("SHM-PURGE pid=%lu, deleteFlag=%d\n",
|
|
osGetCurrentProcessId(), deleteFlag));
|
|
pp = &winShmNodeList;
|
|
while( (p = *pp)!=0 ){
|
|
if( p->nRef==0 ){
|
|
int i;
|
|
if( p->mutex ){ sqlite3_mutex_free(p->mutex); }
|
|
for(i=0; i<p->nRegion; i++){
|
|
BOOL bRc = osUnmapViewOfFile(p->aRegion[i].pMap);
|
|
OSTRACE(("SHM-PURGE-UNMAP pid=%lu, region=%d, rc=%s\n",
|
|
osGetCurrentProcessId(), i, bRc ? "ok" : "failed"));
|
|
UNUSED_VARIABLE_VALUE(bRc);
|
|
bRc = osCloseHandle(p->aRegion[i].hMap);
|
|
OSTRACE(("SHM-PURGE-CLOSE pid=%lu, region=%d, rc=%s\n",
|
|
osGetCurrentProcessId(), i, bRc ? "ok" : "failed"));
|
|
UNUSED_VARIABLE_VALUE(bRc);
|
|
}
|
|
if( p->hFile.h!=NULL && p->hFile.h!=INVALID_HANDLE_VALUE ){
|
|
SimulateIOErrorBenign(1);
|
|
winClose((sqlite3_file *)&p->hFile);
|
|
SimulateIOErrorBenign(0);
|
|
}
|
|
if( deleteFlag ){
|
|
SimulateIOErrorBenign(1);
|
|
sqlite3BeginBenignMalloc();
|
|
winDelete(pVfs, p->zFilename, 0);
|
|
sqlite3EndBenignMalloc();
|
|
SimulateIOErrorBenign(0);
|
|
}
|
|
*pp = p->pNext;
|
|
sqlite3_free(p->aRegion);
|
|
sqlite3_free(p);
|
|
}else{
|
|
pp = &p->pNext;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
** Open the shared-memory area associated with database file pDbFd.
|
|
**
|
|
** When opening a new shared-memory file, if no other instances of that
|
|
** file are currently open, in this process or in other processes, then
|
|
** the file must be truncated to zero length or have its header cleared.
|
|
*/
|
|
static int winOpenSharedMemory(winFile *pDbFd){
|
|
struct winShm *p; /* The connection to be opened */
|
|
struct winShmNode *pShmNode = 0; /* The underlying mmapped file */
|
|
int rc; /* Result code */
|
|
struct winShmNode *pNew; /* Newly allocated winShmNode */
|
|
int nName; /* Size of zName in bytes */
|
|
|
|
assert( pDbFd->pShm==0 ); /* Not previously opened */
|
|
|
|
/* Allocate space for the new sqlite3_shm object. Also speculatively
|
|
** allocate space for a new winShmNode and filename.
|
|
*/
|
|
p = sqlite3MallocZero( sizeof(*p) );
|
|
if( p==0 ) return SQLITE_IOERR_NOMEM;
|
|
nName = sqlite3Strlen30(pDbFd->zPath);
|
|
pNew = sqlite3MallocZero( sizeof(*pShmNode) + nName + 17 );
|
|
if( pNew==0 ){
|
|
sqlite3_free(p);
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
pNew->zFilename = (char*)&pNew[1];
|
|
sqlite3_snprintf(nName+15, pNew->zFilename, "%s-shm", pDbFd->zPath);
|
|
sqlite3FileSuffix3(pDbFd->zPath, pNew->zFilename);
|
|
|
|
/* Look to see if there is an existing winShmNode that can be used.
|
|
** If no matching winShmNode currently exists, create a new one.
|
|
*/
|
|
winShmEnterMutex();
|
|
for(pShmNode = winShmNodeList; pShmNode; pShmNode=pShmNode->pNext){
|
|
/* TBD need to come up with better match here. Perhaps
|
|
** use FILE_ID_BOTH_DIR_INFO Structure.
|
|
*/
|
|
if( sqlite3StrICmp(pShmNode->zFilename, pNew->zFilename)==0 ) break;
|
|
}
|
|
if( pShmNode ){
|
|
sqlite3_free(pNew);
|
|
}else{
|
|
pShmNode = pNew;
|
|
pNew = 0;
|
|
((winFile*)(&pShmNode->hFile))->h = INVALID_HANDLE_VALUE;
|
|
pShmNode->pNext = winShmNodeList;
|
|
winShmNodeList = pShmNode;
|
|
|
|
pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
|
|
if( pShmNode->mutex==0 ){
|
|
rc = SQLITE_IOERR_NOMEM;
|
|
goto shm_open_err;
|
|
}
|
|
|
|
rc = winOpen(pDbFd->pVfs,
|
|
pShmNode->zFilename, /* Name of the file (UTF-8) */
|
|
(sqlite3_file*)&pShmNode->hFile, /* File handle here */
|
|
SQLITE_OPEN_WAL | SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
|
|
0);
|
|
if( SQLITE_OK!=rc ){
|
|
goto shm_open_err;
|
|
}
|
|
|
|
/* Check to see if another process is holding the dead-man switch.
|
|
** If not, truncate the file to zero length.
|
|
*/
|
|
if( winShmSystemLock(pShmNode, _SHM_WRLCK, WIN_SHM_DMS, 1)==SQLITE_OK ){
|
|
rc = winTruncate((sqlite3_file *)&pShmNode->hFile, 0);
|
|
if( rc!=SQLITE_OK ){
|
|
rc = winLogError(SQLITE_IOERR_SHMOPEN, osGetLastError(),
|
|
"winOpenShm", pDbFd->zPath);
|
|
}
|
|
}
|
|
if( rc==SQLITE_OK ){
|
|
winShmSystemLock(pShmNode, _SHM_UNLCK, WIN_SHM_DMS, 1);
|
|
rc = winShmSystemLock(pShmNode, _SHM_RDLCK, WIN_SHM_DMS, 1);
|
|
}
|
|
if( rc ) goto shm_open_err;
|
|
}
|
|
|
|
/* Make the new connection a child of the winShmNode */
|
|
p->pShmNode = pShmNode;
|
|
#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE)
|
|
p->id = pShmNode->nextShmId++;
|
|
#endif
|
|
pShmNode->nRef++;
|
|
pDbFd->pShm = p;
|
|
winShmLeaveMutex();
|
|
|
|
/* The reference count on pShmNode has already been incremented under
|
|
** the cover of the winShmEnterMutex() mutex and the pointer from the
|
|
** new (struct winShm) object to the pShmNode has been set. All that is
|
|
** left to do is to link the new object into the linked list starting
|
|
** at pShmNode->pFirst. This must be done while holding the pShmNode->mutex
|
|
** mutex.
|
|
*/
|
|
sqlite3_mutex_enter(pShmNode->mutex);
|
|
p->pNext = pShmNode->pFirst;
|
|
pShmNode->pFirst = p;
|
|
sqlite3_mutex_leave(pShmNode->mutex);
|
|
return SQLITE_OK;
|
|
|
|
/* Jump here on any error */
|
|
shm_open_err:
|
|
winShmSystemLock(pShmNode, _SHM_UNLCK, WIN_SHM_DMS, 1);
|
|
winShmPurge(pDbFd->pVfs, 0); /* This call frees pShmNode if required */
|
|
sqlite3_free(p);
|
|
sqlite3_free(pNew);
|
|
winShmLeaveMutex();
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** Close a connection to shared-memory. Delete the underlying
|
|
** storage if deleteFlag is true.
|
|
*/
|
|
static int winShmUnmap(
|
|
sqlite3_file *fd, /* Database holding shared memory */
|
|
int deleteFlag /* Delete after closing if true */
|
|
){
|
|
winFile *pDbFd; /* Database holding shared-memory */
|
|
winShm *p; /* The connection to be closed */
|
|
winShmNode *pShmNode; /* The underlying shared-memory file */
|
|
winShm **pp; /* For looping over sibling connections */
|
|
|
|
pDbFd = (winFile*)fd;
|
|
p = pDbFd->pShm;
|
|
if( p==0 ) return SQLITE_OK;
|
|
pShmNode = p->pShmNode;
|
|
|
|
/* Remove connection p from the set of connections associated
|
|
** with pShmNode */
|
|
sqlite3_mutex_enter(pShmNode->mutex);
|
|
for(pp=&pShmNode->pFirst; (*pp)!=p; pp = &(*pp)->pNext){}
|
|
*pp = p->pNext;
|
|
|
|
/* Free the connection p */
|
|
sqlite3_free(p);
|
|
pDbFd->pShm = 0;
|
|
sqlite3_mutex_leave(pShmNode->mutex);
|
|
|
|
/* If pShmNode->nRef has reached 0, then close the underlying
|
|
** shared-memory file, too */
|
|
winShmEnterMutex();
|
|
assert( pShmNode->nRef>0 );
|
|
pShmNode->nRef--;
|
|
if( pShmNode->nRef==0 ){
|
|
winShmPurge(pDbFd->pVfs, deleteFlag);
|
|
}
|
|
winShmLeaveMutex();
|
|
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Change the lock state for a shared-memory segment.
|
|
*/
|
|
static int winShmLock(
|
|
sqlite3_file *fd, /* Database file holding the shared memory */
|
|
int ofst, /* First lock to acquire or release */
|
|
int n, /* Number of locks to acquire or release */
|
|
int flags /* What to do with the lock */
|
|
){
|
|
winFile *pDbFd = (winFile*)fd; /* Connection holding shared memory */
|
|
winShm *p = pDbFd->pShm; /* The shared memory being locked */
|
|
winShm *pX; /* For looping over all siblings */
|
|
winShmNode *pShmNode = p->pShmNode;
|
|
int rc = SQLITE_OK; /* Result code */
|
|
u16 mask; /* Mask of locks to take or release */
|
|
|
|
assert( ofst>=0 && ofst+n<=SQLITE_SHM_NLOCK );
|
|
assert( n>=1 );
|
|
assert( flags==(SQLITE_SHM_LOCK | SQLITE_SHM_SHARED)
|
|
|| flags==(SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE)
|
|
|| flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED)
|
|
|| flags==(SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE) );
|
|
assert( n==1 || (flags & SQLITE_SHM_EXCLUSIVE)!=0 );
|
|
|
|
mask = (u16)((1U<<(ofst+n)) - (1U<<ofst));
|
|
assert( n>1 || mask==(1<<ofst) );
|
|
sqlite3_mutex_enter(pShmNode->mutex);
|
|
if( flags & SQLITE_SHM_UNLOCK ){
|
|
u16 allMask = 0; /* Mask of locks held by siblings */
|
|
|
|
/* See if any siblings hold this same lock */
|
|
for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
|
|
if( pX==p ) continue;
|
|
assert( (pX->exclMask & (p->exclMask|p->sharedMask))==0 );
|
|
allMask |= pX->sharedMask;
|
|
}
|
|
|
|
/* Unlock the system-level locks */
|
|
if( (mask & allMask)==0 ){
|
|
rc = winShmSystemLock(pShmNode, _SHM_UNLCK, ofst+WIN_SHM_BASE, n);
|
|
}else{
|
|
rc = SQLITE_OK;
|
|
}
|
|
|
|
/* Undo the local locks */
|
|
if( rc==SQLITE_OK ){
|
|
p->exclMask &= ~mask;
|
|
p->sharedMask &= ~mask;
|
|
}
|
|
}else if( flags & SQLITE_SHM_SHARED ){
|
|
u16 allShared = 0; /* Union of locks held by connections other than "p" */
|
|
|
|
/* Find out which shared locks are already held by sibling connections.
|
|
** If any sibling already holds an exclusive lock, go ahead and return
|
|
** SQLITE_BUSY.
|
|
*/
|
|
for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
|
|
if( (pX->exclMask & mask)!=0 ){
|
|
rc = SQLITE_BUSY;
|
|
break;
|
|
}
|
|
allShared |= pX->sharedMask;
|
|
}
|
|
|
|
/* Get shared locks at the system level, if necessary */
|
|
if( rc==SQLITE_OK ){
|
|
if( (allShared & mask)==0 ){
|
|
rc = winShmSystemLock(pShmNode, _SHM_RDLCK, ofst+WIN_SHM_BASE, n);
|
|
}else{
|
|
rc = SQLITE_OK;
|
|
}
|
|
}
|
|
|
|
/* Get the local shared locks */
|
|
if( rc==SQLITE_OK ){
|
|
p->sharedMask |= mask;
|
|
}
|
|
}else{
|
|
/* Make sure no sibling connections hold locks that will block this
|
|
** lock. If any do, return SQLITE_BUSY right away.
|
|
*/
|
|
for(pX=pShmNode->pFirst; pX; pX=pX->pNext){
|
|
if( (pX->exclMask & mask)!=0 || (pX->sharedMask & mask)!=0 ){
|
|
rc = SQLITE_BUSY;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Get the exclusive locks at the system level. Then if successful
|
|
** also mark the local connection as being locked.
|
|
*/
|
|
if( rc==SQLITE_OK ){
|
|
rc = winShmSystemLock(pShmNode, _SHM_WRLCK, ofst+WIN_SHM_BASE, n);
|
|
if( rc==SQLITE_OK ){
|
|
assert( (p->sharedMask & mask)==0 );
|
|
p->exclMask |= mask;
|
|
}
|
|
}
|
|
}
|
|
sqlite3_mutex_leave(pShmNode->mutex);
|
|
OSTRACE(("SHM-LOCK pid=%lu, id=%d, sharedMask=%03x, exclMask=%03x, rc=%s\n",
|
|
osGetCurrentProcessId(), p->id, p->sharedMask, p->exclMask,
|
|
sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** Implement a memory barrier or memory fence on shared memory.
|
|
**
|
|
** All loads and stores begun before the barrier must complete before
|
|
** any load or store begun after the barrier.
|
|
*/
|
|
static void winShmBarrier(
|
|
sqlite3_file *fd /* Database holding the shared memory */
|
|
){
|
|
UNUSED_PARAMETER(fd);
|
|
sqlite3MemoryBarrier(); /* compiler-defined memory barrier */
|
|
winShmEnterMutex(); /* Also mutex, for redundancy */
|
|
winShmLeaveMutex();
|
|
}
|
|
|
|
/*
|
|
** This function is called to obtain a pointer to region iRegion of the
|
|
** shared-memory associated with the database file fd. Shared-memory regions
|
|
** are numbered starting from zero. Each shared-memory region is szRegion
|
|
** bytes in size.
|
|
**
|
|
** If an error occurs, an error code is returned and *pp is set to NULL.
|
|
**
|
|
** Otherwise, if the isWrite parameter is 0 and the requested shared-memory
|
|
** region has not been allocated (by any client, including one running in a
|
|
** separate process), then *pp is set to NULL and SQLITE_OK returned. If
|
|
** isWrite is non-zero and the requested shared-memory region has not yet
|
|
** been allocated, it is allocated by this function.
|
|
**
|
|
** If the shared-memory region has already been allocated or is allocated by
|
|
** this call as described above, then it is mapped into this processes
|
|
** address space (if it is not already), *pp is set to point to the mapped
|
|
** memory and SQLITE_OK returned.
|
|
*/
|
|
static int winShmMap(
|
|
sqlite3_file *fd, /* Handle open on database file */
|
|
int iRegion, /* Region to retrieve */
|
|
int szRegion, /* Size of regions */
|
|
int isWrite, /* True to extend file if necessary */
|
|
void volatile **pp /* OUT: Mapped memory */
|
|
){
|
|
winFile *pDbFd = (winFile*)fd;
|
|
winShm *pShm = pDbFd->pShm;
|
|
winShmNode *pShmNode;
|
|
int rc = SQLITE_OK;
|
|
|
|
if( !pShm ){
|
|
rc = winOpenSharedMemory(pDbFd);
|
|
if( rc!=SQLITE_OK ) return rc;
|
|
pShm = pDbFd->pShm;
|
|
}
|
|
pShmNode = pShm->pShmNode;
|
|
|
|
sqlite3_mutex_enter(pShmNode->mutex);
|
|
assert( szRegion==pShmNode->szRegion || pShmNode->nRegion==0 );
|
|
|
|
if( pShmNode->nRegion<=iRegion ){
|
|
struct ShmRegion *apNew; /* New aRegion[] array */
|
|
int nByte = (iRegion+1)*szRegion; /* Minimum required file size */
|
|
sqlite3_int64 sz; /* Current size of wal-index file */
|
|
|
|
pShmNode->szRegion = szRegion;
|
|
|
|
/* The requested region is not mapped into this processes address space.
|
|
** Check to see if it has been allocated (i.e. if the wal-index file is
|
|
** large enough to contain the requested region).
|
|
*/
|
|
rc = winFileSize((sqlite3_file *)&pShmNode->hFile, &sz);
|
|
if( rc!=SQLITE_OK ){
|
|
rc = winLogError(SQLITE_IOERR_SHMSIZE, osGetLastError(),
|
|
"winShmMap1", pDbFd->zPath);
|
|
goto shmpage_out;
|
|
}
|
|
|
|
if( sz<nByte ){
|
|
/* The requested memory region does not exist. If isWrite is set to
|
|
** zero, exit early. *pp will be set to NULL and SQLITE_OK returned.
|
|
**
|
|
** Alternatively, if isWrite is non-zero, use ftruncate() to allocate
|
|
** the requested memory region.
|
|
*/
|
|
if( !isWrite ) goto shmpage_out;
|
|
rc = winTruncate((sqlite3_file *)&pShmNode->hFile, nByte);
|
|
if( rc!=SQLITE_OK ){
|
|
rc = winLogError(SQLITE_IOERR_SHMSIZE, osGetLastError(),
|
|
"winShmMap2", pDbFd->zPath);
|
|
goto shmpage_out;
|
|
}
|
|
}
|
|
|
|
/* Map the requested memory region into this processes address space. */
|
|
apNew = (struct ShmRegion *)sqlite3_realloc64(
|
|
pShmNode->aRegion, (iRegion+1)*sizeof(apNew[0])
|
|
);
|
|
if( !apNew ){
|
|
rc = SQLITE_IOERR_NOMEM;
|
|
goto shmpage_out;
|
|
}
|
|
pShmNode->aRegion = apNew;
|
|
|
|
while( pShmNode->nRegion<=iRegion ){
|
|
HANDLE hMap = NULL; /* file-mapping handle */
|
|
void *pMap = 0; /* Mapped memory region */
|
|
|
|
#if SQLITE_OS_WINRT
|
|
hMap = osCreateFileMappingFromApp(pShmNode->hFile.h,
|
|
NULL, PAGE_READWRITE, nByte, NULL
|
|
);
|
|
#elif defined(SQLITE_WIN32_HAS_WIDE)
|
|
hMap = osCreateFileMappingW(pShmNode->hFile.h,
|
|
NULL, PAGE_READWRITE, 0, nByte, NULL
|
|
);
|
|
#elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA
|
|
hMap = osCreateFileMappingA(pShmNode->hFile.h,
|
|
NULL, PAGE_READWRITE, 0, nByte, NULL
|
|
);
|
|
#endif
|
|
OSTRACE(("SHM-MAP-CREATE pid=%lu, region=%d, size=%d, rc=%s\n",
|
|
osGetCurrentProcessId(), pShmNode->nRegion, nByte,
|
|
hMap ? "ok" : "failed"));
|
|
if( hMap ){
|
|
int iOffset = pShmNode->nRegion*szRegion;
|
|
int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity;
|
|
#if SQLITE_OS_WINRT
|
|
pMap = osMapViewOfFileFromApp(hMap, FILE_MAP_WRITE | FILE_MAP_READ,
|
|
iOffset - iOffsetShift, szRegion + iOffsetShift
|
|
);
|
|
#else
|
|
pMap = osMapViewOfFile(hMap, FILE_MAP_WRITE | FILE_MAP_READ,
|
|
0, iOffset - iOffsetShift, szRegion + iOffsetShift
|
|
);
|
|
#endif
|
|
OSTRACE(("SHM-MAP-MAP pid=%lu, region=%d, offset=%d, size=%d, rc=%s\n",
|
|
osGetCurrentProcessId(), pShmNode->nRegion, iOffset,
|
|
szRegion, pMap ? "ok" : "failed"));
|
|
}
|
|
if( !pMap ){
|
|
pShmNode->lastErrno = osGetLastError();
|
|
rc = winLogError(SQLITE_IOERR_SHMMAP, pShmNode->lastErrno,
|
|
"winShmMap3", pDbFd->zPath);
|
|
if( hMap ) osCloseHandle(hMap);
|
|
goto shmpage_out;
|
|
}
|
|
|
|
pShmNode->aRegion[pShmNode->nRegion].pMap = pMap;
|
|
pShmNode->aRegion[pShmNode->nRegion].hMap = hMap;
|
|
pShmNode->nRegion++;
|
|
}
|
|
}
|
|
|
|
shmpage_out:
|
|
if( pShmNode->nRegion>iRegion ){
|
|
int iOffset = iRegion*szRegion;
|
|
int iOffsetShift = iOffset % winSysInfo.dwAllocationGranularity;
|
|
char *p = (char *)pShmNode->aRegion[iRegion].pMap;
|
|
*pp = (void *)&p[iOffsetShift];
|
|
}else{
|
|
*pp = 0;
|
|
}
|
|
sqlite3_mutex_leave(pShmNode->mutex);
|
|
return rc;
|
|
}
|
|
|
|
#else
|
|
# define winShmMap 0
|
|
# define winShmLock 0
|
|
# define winShmBarrier 0
|
|
# define winShmUnmap 0
|
|
#endif /* #ifndef SQLITE_OMIT_WAL */
|
|
|
|
/*
|
|
** Cleans up the mapped region of the specified file, if any.
|
|
*/
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
static int winUnmapfile(winFile *pFile){
|
|
assert( pFile!=0 );
|
|
OSTRACE(("UNMAP-FILE pid=%lu, pFile=%p, hMap=%p, pMapRegion=%p, "
|
|
"mmapSize=%lld, mmapSizeActual=%lld, mmapSizeMax=%lld\n",
|
|
osGetCurrentProcessId(), pFile, pFile->hMap, pFile->pMapRegion,
|
|
pFile->mmapSize, pFile->mmapSizeActual, pFile->mmapSizeMax));
|
|
if( pFile->pMapRegion ){
|
|
if( !osUnmapViewOfFile(pFile->pMapRegion) ){
|
|
pFile->lastErrno = osGetLastError();
|
|
OSTRACE(("UNMAP-FILE pid=%lu, pFile=%p, pMapRegion=%p, "
|
|
"rc=SQLITE_IOERR_MMAP\n", osGetCurrentProcessId(), pFile,
|
|
pFile->pMapRegion));
|
|
return winLogError(SQLITE_IOERR_MMAP, pFile->lastErrno,
|
|
"winUnmapfile1", pFile->zPath);
|
|
}
|
|
pFile->pMapRegion = 0;
|
|
pFile->mmapSize = 0;
|
|
pFile->mmapSizeActual = 0;
|
|
}
|
|
if( pFile->hMap!=NULL ){
|
|
if( !osCloseHandle(pFile->hMap) ){
|
|
pFile->lastErrno = osGetLastError();
|
|
OSTRACE(("UNMAP-FILE pid=%lu, pFile=%p, hMap=%p, rc=SQLITE_IOERR_MMAP\n",
|
|
osGetCurrentProcessId(), pFile, pFile->hMap));
|
|
return winLogError(SQLITE_IOERR_MMAP, pFile->lastErrno,
|
|
"winUnmapfile2", pFile->zPath);
|
|
}
|
|
pFile->hMap = NULL;
|
|
}
|
|
OSTRACE(("UNMAP-FILE pid=%lu, pFile=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), pFile));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Memory map or remap the file opened by file-descriptor pFd (if the file
|
|
** is already mapped, the existing mapping is replaced by the new). Or, if
|
|
** there already exists a mapping for this file, and there are still
|
|
** outstanding xFetch() references to it, this function is a no-op.
|
|
**
|
|
** If parameter nByte is non-negative, then it is the requested size of
|
|
** the mapping to create. Otherwise, if nByte is less than zero, then the
|
|
** requested size is the size of the file on disk. The actual size of the
|
|
** created mapping is either the requested size or the value configured
|
|
** using SQLITE_FCNTL_MMAP_SIZE, whichever is smaller.
|
|
**
|
|
** SQLITE_OK is returned if no error occurs (even if the mapping is not
|
|
** recreated as a result of outstanding references) or an SQLite error
|
|
** code otherwise.
|
|
*/
|
|
static int winMapfile(winFile *pFd, sqlite3_int64 nByte){
|
|
sqlite3_int64 nMap = nByte;
|
|
int rc;
|
|
|
|
assert( nMap>=0 || pFd->nFetchOut==0 );
|
|
OSTRACE(("MAP-FILE pid=%lu, pFile=%p, size=%lld\n",
|
|
osGetCurrentProcessId(), pFd, nByte));
|
|
|
|
if( pFd->nFetchOut>0 ) return SQLITE_OK;
|
|
|
|
if( nMap<0 ){
|
|
rc = winFileSize((sqlite3_file*)pFd, &nMap);
|
|
if( rc ){
|
|
OSTRACE(("MAP-FILE pid=%lu, pFile=%p, rc=SQLITE_IOERR_FSTAT\n",
|
|
osGetCurrentProcessId(), pFd));
|
|
return SQLITE_IOERR_FSTAT;
|
|
}
|
|
}
|
|
if( nMap>pFd->mmapSizeMax ){
|
|
nMap = pFd->mmapSizeMax;
|
|
}
|
|
nMap &= ~(sqlite3_int64)(winSysInfo.dwPageSize - 1);
|
|
|
|
if( nMap==0 && pFd->mmapSize>0 ){
|
|
winUnmapfile(pFd);
|
|
}
|
|
if( nMap!=pFd->mmapSize ){
|
|
void *pNew = 0;
|
|
DWORD protect = PAGE_READONLY;
|
|
DWORD flags = FILE_MAP_READ;
|
|
|
|
winUnmapfile(pFd);
|
|
#ifdef SQLITE_MMAP_READWRITE
|
|
if( (pFd->ctrlFlags & WINFILE_RDONLY)==0 ){
|
|
protect = PAGE_READWRITE;
|
|
flags |= FILE_MAP_WRITE;
|
|
}
|
|
#endif
|
|
#if SQLITE_OS_WINRT
|
|
pFd->hMap = osCreateFileMappingFromApp(pFd->h, NULL, protect, nMap, NULL);
|
|
#elif defined(SQLITE_WIN32_HAS_WIDE)
|
|
pFd->hMap = osCreateFileMappingW(pFd->h, NULL, protect,
|
|
(DWORD)((nMap>>32) & 0xffffffff),
|
|
(DWORD)(nMap & 0xffffffff), NULL);
|
|
#elif defined(SQLITE_WIN32_HAS_ANSI) && SQLITE_WIN32_CREATEFILEMAPPINGA
|
|
pFd->hMap = osCreateFileMappingA(pFd->h, NULL, protect,
|
|
(DWORD)((nMap>>32) & 0xffffffff),
|
|
(DWORD)(nMap & 0xffffffff), NULL);
|
|
#endif
|
|
if( pFd->hMap==NULL ){
|
|
pFd->lastErrno = osGetLastError();
|
|
rc = winLogError(SQLITE_IOERR_MMAP, pFd->lastErrno,
|
|
"winMapfile1", pFd->zPath);
|
|
/* Log the error, but continue normal operation using xRead/xWrite */
|
|
OSTRACE(("MAP-FILE-CREATE pid=%lu, pFile=%p, rc=%s\n",
|
|
osGetCurrentProcessId(), pFd, sqlite3ErrName(rc)));
|
|
return SQLITE_OK;
|
|
}
|
|
assert( (nMap % winSysInfo.dwPageSize)==0 );
|
|
assert( sizeof(SIZE_T)==sizeof(sqlite3_int64) || nMap<=0xffffffff );
|
|
#if SQLITE_OS_WINRT
|
|
pNew = osMapViewOfFileFromApp(pFd->hMap, flags, 0, (SIZE_T)nMap);
|
|
#else
|
|
pNew = osMapViewOfFile(pFd->hMap, flags, 0, 0, (SIZE_T)nMap);
|
|
#endif
|
|
if( pNew==NULL ){
|
|
osCloseHandle(pFd->hMap);
|
|
pFd->hMap = NULL;
|
|
pFd->lastErrno = osGetLastError();
|
|
rc = winLogError(SQLITE_IOERR_MMAP, pFd->lastErrno,
|
|
"winMapfile2", pFd->zPath);
|
|
/* Log the error, but continue normal operation using xRead/xWrite */
|
|
OSTRACE(("MAP-FILE-MAP pid=%lu, pFile=%p, rc=%s\n",
|
|
osGetCurrentProcessId(), pFd, sqlite3ErrName(rc)));
|
|
return SQLITE_OK;
|
|
}
|
|
pFd->pMapRegion = pNew;
|
|
pFd->mmapSize = nMap;
|
|
pFd->mmapSizeActual = nMap;
|
|
}
|
|
|
|
OSTRACE(("MAP-FILE pid=%lu, pFile=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), pFd));
|
|
return SQLITE_OK;
|
|
}
|
|
#endif /* SQLITE_MAX_MMAP_SIZE>0 */
|
|
|
|
/*
|
|
** If possible, return a pointer to a mapping of file fd starting at offset
|
|
** iOff. The mapping must be valid for at least nAmt bytes.
|
|
**
|
|
** If such a pointer can be obtained, store it in *pp and return SQLITE_OK.
|
|
** Or, if one cannot but no error occurs, set *pp to 0 and return SQLITE_OK.
|
|
** Finally, if an error does occur, return an SQLite error code. The final
|
|
** value of *pp is undefined in this case.
|
|
**
|
|
** If this function does return a pointer, the caller must eventually
|
|
** release the reference by calling winUnfetch().
|
|
*/
|
|
static int winFetch(sqlite3_file *fd, i64 iOff, int nAmt, void **pp){
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
winFile *pFd = (winFile*)fd; /* The underlying database file */
|
|
#endif
|
|
*pp = 0;
|
|
|
|
OSTRACE(("FETCH pid=%lu, pFile=%p, offset=%lld, amount=%d, pp=%p\n",
|
|
osGetCurrentProcessId(), fd, iOff, nAmt, pp));
|
|
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
if( pFd->mmapSizeMax>0 ){
|
|
if( pFd->pMapRegion==0 ){
|
|
int rc = winMapfile(pFd, -1);
|
|
if( rc!=SQLITE_OK ){
|
|
OSTRACE(("FETCH pid=%lu, pFile=%p, rc=%s\n",
|
|
osGetCurrentProcessId(), pFd, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
}
|
|
if( pFd->mmapSize >= iOff+nAmt ){
|
|
*pp = &((u8 *)pFd->pMapRegion)[iOff];
|
|
pFd->nFetchOut++;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
OSTRACE(("FETCH pid=%lu, pFile=%p, pp=%p, *pp=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), fd, pp, *pp));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** If the third argument is non-NULL, then this function releases a
|
|
** reference obtained by an earlier call to winFetch(). The second
|
|
** argument passed to this function must be the same as the corresponding
|
|
** argument that was passed to the winFetch() invocation.
|
|
**
|
|
** Or, if the third argument is NULL, then this function is being called
|
|
** to inform the VFS layer that, according to POSIX, any existing mapping
|
|
** may now be invalid and should be unmapped.
|
|
*/
|
|
static int winUnfetch(sqlite3_file *fd, i64 iOff, void *p){
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
winFile *pFd = (winFile*)fd; /* The underlying database file */
|
|
|
|
/* If p==0 (unmap the entire file) then there must be no outstanding
|
|
** xFetch references. Or, if p!=0 (meaning it is an xFetch reference),
|
|
** then there must be at least one outstanding. */
|
|
assert( (p==0)==(pFd->nFetchOut==0) );
|
|
|
|
/* If p!=0, it must match the iOff value. */
|
|
assert( p==0 || p==&((u8 *)pFd->pMapRegion)[iOff] );
|
|
|
|
OSTRACE(("UNFETCH pid=%lu, pFile=%p, offset=%lld, p=%p\n",
|
|
osGetCurrentProcessId(), pFd, iOff, p));
|
|
|
|
if( p ){
|
|
pFd->nFetchOut--;
|
|
}else{
|
|
/* FIXME: If Windows truly always prevents truncating or deleting a
|
|
** file while a mapping is held, then the following winUnmapfile() call
|
|
** is unnecessary can be omitted - potentially improving
|
|
** performance. */
|
|
winUnmapfile(pFd);
|
|
}
|
|
|
|
assert( pFd->nFetchOut>=0 );
|
|
#endif
|
|
|
|
OSTRACE(("UNFETCH pid=%lu, pFile=%p, rc=SQLITE_OK\n",
|
|
osGetCurrentProcessId(), fd));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Here ends the implementation of all sqlite3_file methods.
|
|
**
|
|
********************** End sqlite3_file Methods *******************************
|
|
******************************************************************************/
|
|
|
|
/*
|
|
** This vector defines all the methods that can operate on an
|
|
** sqlite3_file for win32.
|
|
*/
|
|
static const sqlite3_io_methods winIoMethod = {
|
|
3, /* iVersion */
|
|
winClose, /* xClose */
|
|
winRead, /* xRead */
|
|
winWrite, /* xWrite */
|
|
winTruncate, /* xTruncate */
|
|
winSync, /* xSync */
|
|
winFileSize, /* xFileSize */
|
|
winLock, /* xLock */
|
|
winUnlock, /* xUnlock */
|
|
winCheckReservedLock, /* xCheckReservedLock */
|
|
winFileControl, /* xFileControl */
|
|
winSectorSize, /* xSectorSize */
|
|
winDeviceCharacteristics, /* xDeviceCharacteristics */
|
|
winShmMap, /* xShmMap */
|
|
winShmLock, /* xShmLock */
|
|
winShmBarrier, /* xShmBarrier */
|
|
winShmUnmap, /* xShmUnmap */
|
|
winFetch, /* xFetch */
|
|
winUnfetch /* xUnfetch */
|
|
};
|
|
|
|
/****************************************************************************
|
|
**************************** sqlite3_vfs methods ****************************
|
|
**
|
|
** This division contains the implementation of methods on the
|
|
** sqlite3_vfs object.
|
|
*/
|
|
|
|
#if defined(__CYGWIN__)
|
|
/*
|
|
** Convert a filename from whatever the underlying operating system
|
|
** supports for filenames into UTF-8. Space to hold the result is
|
|
** obtained from malloc and must be freed by the calling function.
|
|
*/
|
|
static char *winConvertToUtf8Filename(const void *zFilename){
|
|
char *zConverted = 0;
|
|
if( osIsNT() ){
|
|
zConverted = winUnicodeToUtf8(zFilename);
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
zConverted = sqlite3_win32_mbcs_to_utf8(zFilename);
|
|
}
|
|
#endif
|
|
/* caller will handle out of memory */
|
|
return zConverted;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
** Convert a UTF-8 filename into whatever form the underlying
|
|
** operating system wants filenames in. Space to hold the result
|
|
** is obtained from malloc and must be freed by the calling
|
|
** function.
|
|
*/
|
|
static void *winConvertFromUtf8Filename(const char *zFilename){
|
|
void *zConverted = 0;
|
|
if( osIsNT() ){
|
|
zConverted = winUtf8ToUnicode(zFilename);
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
zConverted = sqlite3_win32_utf8_to_mbcs(zFilename);
|
|
}
|
|
#endif
|
|
/* caller will handle out of memory */
|
|
return zConverted;
|
|
}
|
|
|
|
/*
|
|
** This function returns non-zero if the specified UTF-8 string buffer
|
|
** ends with a directory separator character or one was successfully
|
|
** added to it.
|
|
*/
|
|
static int winMakeEndInDirSep(int nBuf, char *zBuf){
|
|
if( zBuf ){
|
|
int nLen = sqlite3Strlen30(zBuf);
|
|
if( nLen>0 ){
|
|
if( winIsDirSep(zBuf[nLen-1]) ){
|
|
return 1;
|
|
}else if( nLen+1<nBuf ){
|
|
zBuf[nLen] = winGetDirSep();
|
|
zBuf[nLen+1] = '\0';
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
** Create a temporary file name and store the resulting pointer into pzBuf.
|
|
** The pointer returned in pzBuf must be freed via sqlite3_free().
|
|
*/
|
|
static int winGetTempname(sqlite3_vfs *pVfs, char **pzBuf){
|
|
static char zChars[] =
|
|
"abcdefghijklmnopqrstuvwxyz"
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
|
"0123456789";
|
|
size_t i, j;
|
|
int nPre = sqlite3Strlen30(SQLITE_TEMP_FILE_PREFIX);
|
|
int nMax, nBuf, nDir, nLen;
|
|
char *zBuf;
|
|
|
|
/* It's odd to simulate an io-error here, but really this is just
|
|
** using the io-error infrastructure to test that SQLite handles this
|
|
** function failing.
|
|
*/
|
|
SimulateIOError( return SQLITE_IOERR );
|
|
|
|
/* Allocate a temporary buffer to store the fully qualified file
|
|
** name for the temporary file. If this fails, we cannot continue.
|
|
*/
|
|
nMax = pVfs->mxPathname; nBuf = nMax + 2;
|
|
zBuf = sqlite3MallocZero( nBuf );
|
|
if( !zBuf ){
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
|
|
/* Figure out the effective temporary directory. First, check if one
|
|
** has been explicitly set by the application; otherwise, use the one
|
|
** configured by the operating system.
|
|
*/
|
|
nDir = nMax - (nPre + 15);
|
|
assert( nDir>0 );
|
|
if( sqlite3_temp_directory ){
|
|
int nDirLen = sqlite3Strlen30(sqlite3_temp_directory);
|
|
if( nDirLen>0 ){
|
|
if( !winIsDirSep(sqlite3_temp_directory[nDirLen-1]) ){
|
|
nDirLen++;
|
|
}
|
|
if( nDirLen>nDir ){
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_ERROR\n"));
|
|
return winLogError(SQLITE_ERROR, 0, "winGetTempname1", 0);
|
|
}
|
|
sqlite3_snprintf(nMax, zBuf, "%s", sqlite3_temp_directory);
|
|
}
|
|
}
|
|
#if defined(__CYGWIN__)
|
|
else{
|
|
static const char *azDirs[] = {
|
|
0, /* getenv("SQLITE_TMPDIR") */
|
|
0, /* getenv("TMPDIR") */
|
|
0, /* getenv("TMP") */
|
|
0, /* getenv("TEMP") */
|
|
0, /* getenv("USERPROFILE") */
|
|
"/var/tmp",
|
|
"/usr/tmp",
|
|
"/tmp",
|
|
".",
|
|
0 /* List terminator */
|
|
};
|
|
unsigned int i;
|
|
const char *zDir = 0;
|
|
|
|
if( !azDirs[0] ) azDirs[0] = getenv("SQLITE_TMPDIR");
|
|
if( !azDirs[1] ) azDirs[1] = getenv("TMPDIR");
|
|
if( !azDirs[2] ) azDirs[2] = getenv("TMP");
|
|
if( !azDirs[3] ) azDirs[3] = getenv("TEMP");
|
|
if( !azDirs[4] ) azDirs[4] = getenv("USERPROFILE");
|
|
for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); zDir=azDirs[i++]){
|
|
void *zConverted;
|
|
if( zDir==0 ) continue;
|
|
/* If the path starts with a drive letter followed by the colon
|
|
** character, assume it is already a native Win32 path; otherwise,
|
|
** it must be converted to a native Win32 path via the Cygwin API
|
|
** prior to using it.
|
|
*/
|
|
if( winIsDriveLetterAndColon(zDir) ){
|
|
zConverted = winConvertFromUtf8Filename(zDir);
|
|
if( !zConverted ){
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( winIsDir(zConverted) ){
|
|
sqlite3_snprintf(nMax, zBuf, "%s", zDir);
|
|
sqlite3_free(zConverted);
|
|
break;
|
|
}
|
|
sqlite3_free(zConverted);
|
|
}else{
|
|
zConverted = sqlite3MallocZero( nMax+1 );
|
|
if( !zConverted ){
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( cygwin_conv_path(
|
|
osIsNT() ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_A, zDir,
|
|
zConverted, nMax+1)<0 ){
|
|
sqlite3_free(zConverted);
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_CONVPATH\n"));
|
|
return winLogError(SQLITE_IOERR_CONVPATH, (DWORD)errno,
|
|
"winGetTempname2", zDir);
|
|
}
|
|
if( winIsDir(zConverted) ){
|
|
/* At this point, we know the candidate directory exists and should
|
|
** be used. However, we may need to convert the string containing
|
|
** its name into UTF-8 (i.e. if it is UTF-16 right now).
|
|
*/
|
|
char *zUtf8 = winConvertToUtf8Filename(zConverted);
|
|
if( !zUtf8 ){
|
|
sqlite3_free(zConverted);
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
sqlite3_snprintf(nMax, zBuf, "%s", zUtf8);
|
|
sqlite3_free(zUtf8);
|
|
sqlite3_free(zConverted);
|
|
break;
|
|
}
|
|
sqlite3_free(zConverted);
|
|
}
|
|
}
|
|
}
|
|
#elif !SQLITE_OS_WINRT && !defined(__CYGWIN__)
|
|
else if( osIsNT() ){
|
|
char *zMulti;
|
|
LPWSTR zWidePath = sqlite3MallocZero( nMax*sizeof(WCHAR) );
|
|
if( !zWidePath ){
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( osGetTempPathW(nMax, zWidePath)==0 ){
|
|
sqlite3_free(zWidePath);
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_GETTEMPPATH\n"));
|
|
return winLogError(SQLITE_IOERR_GETTEMPPATH, osGetLastError(),
|
|
"winGetTempname2", 0);
|
|
}
|
|
zMulti = winUnicodeToUtf8(zWidePath);
|
|
if( zMulti ){
|
|
sqlite3_snprintf(nMax, zBuf, "%s", zMulti);
|
|
sqlite3_free(zMulti);
|
|
sqlite3_free(zWidePath);
|
|
}else{
|
|
sqlite3_free(zWidePath);
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
char *zUtf8;
|
|
char *zMbcsPath = sqlite3MallocZero( nMax );
|
|
if( !zMbcsPath ){
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( osGetTempPathA(nMax, zMbcsPath)==0 ){
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_GETTEMPPATH\n"));
|
|
return winLogError(SQLITE_IOERR_GETTEMPPATH, osGetLastError(),
|
|
"winGetTempname3", 0);
|
|
}
|
|
zUtf8 = sqlite3_win32_mbcs_to_utf8(zMbcsPath);
|
|
if( zUtf8 ){
|
|
sqlite3_snprintf(nMax, zBuf, "%s", zUtf8);
|
|
sqlite3_free(zUtf8);
|
|
}else{
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_IOERR_NOMEM\n"));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
}
|
|
#endif /* SQLITE_WIN32_HAS_ANSI */
|
|
#endif /* !SQLITE_OS_WINRT */
|
|
|
|
/*
|
|
** Check to make sure the temporary directory ends with an appropriate
|
|
** separator. If it does not and there is not enough space left to add
|
|
** one, fail.
|
|
*/
|
|
if( !winMakeEndInDirSep(nDir+1, zBuf) ){
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_ERROR\n"));
|
|
return winLogError(SQLITE_ERROR, 0, "winGetTempname4", 0);
|
|
}
|
|
|
|
/*
|
|
** Check that the output buffer is large enough for the temporary file
|
|
** name in the following format:
|
|
**
|
|
** "<temporary_directory>/etilqs_XXXXXXXXXXXXXXX\0\0"
|
|
**
|
|
** If not, return SQLITE_ERROR. The number 17 is used here in order to
|
|
** account for the space used by the 15 character random suffix and the
|
|
** two trailing NUL characters. The final directory separator character
|
|
** has already added if it was not already present.
|
|
*/
|
|
nLen = sqlite3Strlen30(zBuf);
|
|
if( (nLen + nPre + 17) > nBuf ){
|
|
sqlite3_free(zBuf);
|
|
OSTRACE(("TEMP-FILENAME rc=SQLITE_ERROR\n"));
|
|
return winLogError(SQLITE_ERROR, 0, "winGetTempname5", 0);
|
|
}
|
|
|
|
sqlite3_snprintf(nBuf-16-nLen, zBuf+nLen, SQLITE_TEMP_FILE_PREFIX);
|
|
|
|
j = sqlite3Strlen30(zBuf);
|
|
sqlite3_randomness(15, &zBuf[j]);
|
|
for(i=0; i<15; i++, j++){
|
|
zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
|
|
}
|
|
zBuf[j] = 0;
|
|
zBuf[j+1] = 0;
|
|
*pzBuf = zBuf;
|
|
|
|
OSTRACE(("TEMP-FILENAME name=%s, rc=SQLITE_OK\n", zBuf));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Return TRUE if the named file is really a directory. Return false if
|
|
** it is something other than a directory, or if there is any kind of memory
|
|
** allocation failure.
|
|
*/
|
|
static int winIsDir(const void *zConverted){
|
|
DWORD attr;
|
|
int rc = 0;
|
|
DWORD lastErrno;
|
|
|
|
if( osIsNT() ){
|
|
int cnt = 0;
|
|
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
|
|
memset(&sAttrData, 0, sizeof(sAttrData));
|
|
while( !(rc = osGetFileAttributesExW((LPCWSTR)zConverted,
|
|
GetFileExInfoStandard,
|
|
&sAttrData)) && winRetryIoerr(&cnt, &lastErrno) ){}
|
|
if( !rc ){
|
|
return 0; /* Invalid name? */
|
|
}
|
|
attr = sAttrData.dwFileAttributes;
|
|
#if SQLITE_OS_WINCE==0
|
|
}else{
|
|
attr = osGetFileAttributesA((char*)zConverted);
|
|
#endif
|
|
}
|
|
return (attr!=INVALID_FILE_ATTRIBUTES) && (attr&FILE_ATTRIBUTE_DIRECTORY);
|
|
}
|
|
|
|
/*
|
|
** Open a file.
|
|
*/
|
|
static int winOpen(
|
|
sqlite3_vfs *pVfs, /* Used to get maximum path name length */
|
|
const char *zName, /* Name of the file (UTF-8) */
|
|
sqlite3_file *id, /* Write the SQLite file handle here */
|
|
int flags, /* Open mode flags */
|
|
int *pOutFlags /* Status return flags */
|
|
){
|
|
HANDLE h;
|
|
DWORD lastErrno = 0;
|
|
DWORD dwDesiredAccess;
|
|
DWORD dwShareMode;
|
|
DWORD dwCreationDisposition;
|
|
DWORD dwFlagsAndAttributes = 0;
|
|
#if SQLITE_OS_WINCE
|
|
int isTemp = 0;
|
|
#endif
|
|
winFile *pFile = (winFile*)id;
|
|
void *zConverted; /* Filename in OS encoding */
|
|
const char *zUtf8Name = zName; /* Filename in UTF-8 encoding */
|
|
int cnt = 0;
|
|
|
|
/* If argument zPath is a NULL pointer, this function is required to open
|
|
** a temporary file. Use this buffer to store the file name in.
|
|
*/
|
|
char *zTmpname = 0; /* For temporary filename, if necessary. */
|
|
|
|
int rc = SQLITE_OK; /* Function Return Code */
|
|
#if !defined(NDEBUG) || SQLITE_OS_WINCE
|
|
int eType = flags&0xFFFFFF00; /* Type of file to open */
|
|
#endif
|
|
|
|
int isExclusive = (flags & SQLITE_OPEN_EXCLUSIVE);
|
|
int isDelete = (flags & SQLITE_OPEN_DELETEONCLOSE);
|
|
int isCreate = (flags & SQLITE_OPEN_CREATE);
|
|
int isReadonly = (flags & SQLITE_OPEN_READONLY);
|
|
int isReadWrite = (flags & SQLITE_OPEN_READWRITE);
|
|
|
|
#ifndef NDEBUG
|
|
int isOpenJournal = (isCreate && (
|
|
eType==SQLITE_OPEN_MASTER_JOURNAL
|
|
|| eType==SQLITE_OPEN_MAIN_JOURNAL
|
|
|| eType==SQLITE_OPEN_WAL
|
|
));
|
|
#endif
|
|
|
|
OSTRACE(("OPEN name=%s, pFile=%p, flags=%x, pOutFlags=%p\n",
|
|
zUtf8Name, id, flags, pOutFlags));
|
|
|
|
/* Check the following statements are true:
|
|
**
|
|
** (a) Exactly one of the READWRITE and READONLY flags must be set, and
|
|
** (b) if CREATE is set, then READWRITE must also be set, and
|
|
** (c) if EXCLUSIVE is set, then CREATE must also be set.
|
|
** (d) if DELETEONCLOSE is set, then CREATE must also be set.
|
|
*/
|
|
assert((isReadonly==0 || isReadWrite==0) && (isReadWrite || isReadonly));
|
|
assert(isCreate==0 || isReadWrite);
|
|
assert(isExclusive==0 || isCreate);
|
|
assert(isDelete==0 || isCreate);
|
|
|
|
/* The main DB, main journal, WAL file and master journal are never
|
|
** automatically deleted. Nor are they ever temporary files. */
|
|
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB );
|
|
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL );
|
|
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL );
|
|
assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL );
|
|
|
|
/* Assert that the upper layer has set one of the "file-type" flags. */
|
|
assert( eType==SQLITE_OPEN_MAIN_DB || eType==SQLITE_OPEN_TEMP_DB
|
|
|| eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL
|
|
|| eType==SQLITE_OPEN_SUBJOURNAL || eType==SQLITE_OPEN_MASTER_JOURNAL
|
|
|| eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL
|
|
);
|
|
|
|
assert( pFile!=0 );
|
|
memset(pFile, 0, sizeof(winFile));
|
|
pFile->h = INVALID_HANDLE_VALUE;
|
|
|
|
#if SQLITE_OS_WINRT
|
|
if( !zUtf8Name && !sqlite3_temp_directory ){
|
|
sqlite3_log(SQLITE_ERROR,
|
|
"sqlite3_temp_directory variable should be set for WinRT");
|
|
}
|
|
#endif
|
|
|
|
/* If the second argument to this function is NULL, generate a
|
|
** temporary file name to use
|
|
*/
|
|
if( !zUtf8Name ){
|
|
assert( isDelete && !isOpenJournal );
|
|
rc = winGetTempname(pVfs, &zTmpname);
|
|
if( rc!=SQLITE_OK ){
|
|
OSTRACE(("OPEN name=%s, rc=%s", zUtf8Name, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
zUtf8Name = zTmpname;
|
|
}
|
|
|
|
/* Database filenames are double-zero terminated if they are not
|
|
** URIs with parameters. Hence, they can always be passed into
|
|
** sqlite3_uri_parameter().
|
|
*/
|
|
assert( (eType!=SQLITE_OPEN_MAIN_DB) || (flags & SQLITE_OPEN_URI) ||
|
|
zUtf8Name[sqlite3Strlen30(zUtf8Name)+1]==0 );
|
|
|
|
/* Convert the filename to the system encoding. */
|
|
zConverted = winConvertFromUtf8Filename(zUtf8Name);
|
|
if( zConverted==0 ){
|
|
sqlite3_free(zTmpname);
|
|
OSTRACE(("OPEN name=%s, rc=SQLITE_IOERR_NOMEM", zUtf8Name));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
|
|
if( winIsDir(zConverted) ){
|
|
sqlite3_free(zConverted);
|
|
sqlite3_free(zTmpname);
|
|
OSTRACE(("OPEN name=%s, rc=SQLITE_CANTOPEN_ISDIR", zUtf8Name));
|
|
return SQLITE_CANTOPEN_ISDIR;
|
|
}
|
|
|
|
if( isReadWrite ){
|
|
dwDesiredAccess = GENERIC_READ | GENERIC_WRITE;
|
|
}else{
|
|
dwDesiredAccess = GENERIC_READ;
|
|
}
|
|
|
|
/* SQLITE_OPEN_EXCLUSIVE is used to make sure that a new file is
|
|
** created. SQLite doesn't use it to indicate "exclusive access"
|
|
** as it is usually understood.
|
|
*/
|
|
if( isExclusive ){
|
|
/* Creates a new file, only if it does not already exist. */
|
|
/* If the file exists, it fails. */
|
|
dwCreationDisposition = CREATE_NEW;
|
|
}else if( isCreate ){
|
|
/* Open existing file, or create if it doesn't exist */
|
|
dwCreationDisposition = OPEN_ALWAYS;
|
|
}else{
|
|
/* Opens a file, only if it exists. */
|
|
dwCreationDisposition = OPEN_EXISTING;
|
|
}
|
|
|
|
dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
|
|
|
|
if( isDelete ){
|
|
#if SQLITE_OS_WINCE
|
|
dwFlagsAndAttributes = FILE_ATTRIBUTE_HIDDEN;
|
|
isTemp = 1;
|
|
#else
|
|
dwFlagsAndAttributes = FILE_ATTRIBUTE_TEMPORARY
|
|
| FILE_ATTRIBUTE_HIDDEN
|
|
| FILE_FLAG_DELETE_ON_CLOSE;
|
|
#endif
|
|
}else{
|
|
dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
|
|
}
|
|
/* Reports from the internet are that performance is always
|
|
** better if FILE_FLAG_RANDOM_ACCESS is used. Ticket #2699. */
|
|
#if SQLITE_OS_WINCE
|
|
dwFlagsAndAttributes |= FILE_FLAG_RANDOM_ACCESS;
|
|
#endif
|
|
|
|
if( osIsNT() ){
|
|
#if SQLITE_OS_WINRT
|
|
CREATEFILE2_EXTENDED_PARAMETERS extendedParameters;
|
|
extendedParameters.dwSize = sizeof(CREATEFILE2_EXTENDED_PARAMETERS);
|
|
extendedParameters.dwFileAttributes =
|
|
dwFlagsAndAttributes & FILE_ATTRIBUTE_MASK;
|
|
extendedParameters.dwFileFlags = dwFlagsAndAttributes & FILE_FLAG_MASK;
|
|
extendedParameters.dwSecurityQosFlags = SECURITY_ANONYMOUS;
|
|
extendedParameters.lpSecurityAttributes = NULL;
|
|
extendedParameters.hTemplateFile = NULL;
|
|
while( (h = osCreateFile2((LPCWSTR)zConverted,
|
|
dwDesiredAccess,
|
|
dwShareMode,
|
|
dwCreationDisposition,
|
|
&extendedParameters))==INVALID_HANDLE_VALUE &&
|
|
winRetryIoerr(&cnt, &lastErrno) ){
|
|
/* Noop */
|
|
}
|
|
#else
|
|
while( (h = osCreateFileW((LPCWSTR)zConverted,
|
|
dwDesiredAccess,
|
|
dwShareMode, NULL,
|
|
dwCreationDisposition,
|
|
dwFlagsAndAttributes,
|
|
NULL))==INVALID_HANDLE_VALUE &&
|
|
winRetryIoerr(&cnt, &lastErrno) ){
|
|
/* Noop */
|
|
}
|
|
#endif
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
while( (h = osCreateFileA((LPCSTR)zConverted,
|
|
dwDesiredAccess,
|
|
dwShareMode, NULL,
|
|
dwCreationDisposition,
|
|
dwFlagsAndAttributes,
|
|
NULL))==INVALID_HANDLE_VALUE &&
|
|
winRetryIoerr(&cnt, &lastErrno) ){
|
|
/* Noop */
|
|
}
|
|
}
|
|
#endif
|
|
winLogIoerr(cnt, __LINE__);
|
|
|
|
OSTRACE(("OPEN file=%p, name=%s, access=%lx, rc=%s\n", h, zUtf8Name,
|
|
dwDesiredAccess, (h==INVALID_HANDLE_VALUE) ? "failed" : "ok"));
|
|
|
|
if( h==INVALID_HANDLE_VALUE ){
|
|
pFile->lastErrno = lastErrno;
|
|
winLogError(SQLITE_CANTOPEN, pFile->lastErrno, "winOpen", zUtf8Name);
|
|
sqlite3_free(zConverted);
|
|
sqlite3_free(zTmpname);
|
|
if( isReadWrite && !isExclusive ){
|
|
return winOpen(pVfs, zName, id,
|
|
((flags|SQLITE_OPEN_READONLY) &
|
|
~(SQLITE_OPEN_CREATE|SQLITE_OPEN_READWRITE)),
|
|
pOutFlags);
|
|
}else{
|
|
return SQLITE_CANTOPEN_BKPT;
|
|
}
|
|
}
|
|
|
|
if( pOutFlags ){
|
|
if( isReadWrite ){
|
|
*pOutFlags = SQLITE_OPEN_READWRITE;
|
|
}else{
|
|
*pOutFlags = SQLITE_OPEN_READONLY;
|
|
}
|
|
}
|
|
|
|
OSTRACE(("OPEN file=%p, name=%s, access=%lx, pOutFlags=%p, *pOutFlags=%d, "
|
|
"rc=%s\n", h, zUtf8Name, dwDesiredAccess, pOutFlags, pOutFlags ?
|
|
*pOutFlags : 0, (h==INVALID_HANDLE_VALUE) ? "failed" : "ok"));
|
|
|
|
#if SQLITE_OS_WINCE
|
|
if( isReadWrite && eType==SQLITE_OPEN_MAIN_DB
|
|
&& (rc = winceCreateLock(zName, pFile))!=SQLITE_OK
|
|
){
|
|
osCloseHandle(h);
|
|
sqlite3_free(zConverted);
|
|
sqlite3_free(zTmpname);
|
|
OSTRACE(("OPEN-CE-LOCK name=%s, rc=%s\n", zName, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
if( isTemp ){
|
|
pFile->zDeleteOnClose = zConverted;
|
|
}else
|
|
#endif
|
|
{
|
|
sqlite3_free(zConverted);
|
|
}
|
|
|
|
sqlite3_free(zTmpname);
|
|
pFile->pMethod = &winIoMethod;
|
|
pFile->pVfs = pVfs;
|
|
pFile->h = h;
|
|
if( isReadonly ){
|
|
pFile->ctrlFlags |= WINFILE_RDONLY;
|
|
}
|
|
if( sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE) ){
|
|
pFile->ctrlFlags |= WINFILE_PSOW;
|
|
}
|
|
pFile->lastErrno = NO_ERROR;
|
|
pFile->zPath = zName;
|
|
#if SQLITE_MAX_MMAP_SIZE>0
|
|
pFile->hMap = NULL;
|
|
pFile->pMapRegion = 0;
|
|
pFile->mmapSize = 0;
|
|
pFile->mmapSizeActual = 0;
|
|
pFile->mmapSizeMax = sqlite3GlobalConfig.szMmap;
|
|
#endif
|
|
|
|
OpenCounter(+1);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** Delete the named file.
|
|
**
|
|
** Note that Windows does not allow a file to be deleted if some other
|
|
** process has it open. Sometimes a virus scanner or indexing program
|
|
** will open a journal file shortly after it is created in order to do
|
|
** whatever it does. While this other process is holding the
|
|
** file open, we will be unable to delete it. To work around this
|
|
** problem, we delay 100 milliseconds and try to delete again. Up
|
|
** to MX_DELETION_ATTEMPTs deletion attempts are run before giving
|
|
** up and returning an error.
|
|
*/
|
|
static int winDelete(
|
|
sqlite3_vfs *pVfs, /* Not used on win32 */
|
|
const char *zFilename, /* Name of file to delete */
|
|
int syncDir /* Not used on win32 */
|
|
){
|
|
int cnt = 0;
|
|
int rc;
|
|
DWORD attr;
|
|
DWORD lastErrno = 0;
|
|
void *zConverted;
|
|
UNUSED_PARAMETER(pVfs);
|
|
UNUSED_PARAMETER(syncDir);
|
|
|
|
SimulateIOError(return SQLITE_IOERR_DELETE);
|
|
OSTRACE(("DELETE name=%s, syncDir=%d\n", zFilename, syncDir));
|
|
|
|
zConverted = winConvertFromUtf8Filename(zFilename);
|
|
if( zConverted==0 ){
|
|
OSTRACE(("DELETE name=%s, rc=SQLITE_IOERR_NOMEM\n", zFilename));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( osIsNT() ){
|
|
do {
|
|
#if SQLITE_OS_WINRT
|
|
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
|
|
memset(&sAttrData, 0, sizeof(sAttrData));
|
|
if ( osGetFileAttributesExW(zConverted, GetFileExInfoStandard,
|
|
&sAttrData) ){
|
|
attr = sAttrData.dwFileAttributes;
|
|
}else{
|
|
lastErrno = osGetLastError();
|
|
if( lastErrno==ERROR_FILE_NOT_FOUND
|
|
|| lastErrno==ERROR_PATH_NOT_FOUND ){
|
|
rc = SQLITE_IOERR_DELETE_NOENT; /* Already gone? */
|
|
}else{
|
|
rc = SQLITE_ERROR;
|
|
}
|
|
break;
|
|
}
|
|
#else
|
|
attr = osGetFileAttributesW(zConverted);
|
|
#endif
|
|
if ( attr==INVALID_FILE_ATTRIBUTES ){
|
|
lastErrno = osGetLastError();
|
|
if( lastErrno==ERROR_FILE_NOT_FOUND
|
|
|| lastErrno==ERROR_PATH_NOT_FOUND ){
|
|
rc = SQLITE_IOERR_DELETE_NOENT; /* Already gone? */
|
|
}else{
|
|
rc = SQLITE_ERROR;
|
|
}
|
|
break;
|
|
}
|
|
if ( attr&FILE_ATTRIBUTE_DIRECTORY ){
|
|
rc = SQLITE_ERROR; /* Files only. */
|
|
break;
|
|
}
|
|
if ( osDeleteFileW(zConverted) ){
|
|
rc = SQLITE_OK; /* Deleted OK. */
|
|
break;
|
|
}
|
|
if ( !winRetryIoerr(&cnt, &lastErrno) ){
|
|
rc = SQLITE_ERROR; /* No more retries. */
|
|
break;
|
|
}
|
|
} while(1);
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
do {
|
|
attr = osGetFileAttributesA(zConverted);
|
|
if ( attr==INVALID_FILE_ATTRIBUTES ){
|
|
lastErrno = osGetLastError();
|
|
if( lastErrno==ERROR_FILE_NOT_FOUND
|
|
|| lastErrno==ERROR_PATH_NOT_FOUND ){
|
|
rc = SQLITE_IOERR_DELETE_NOENT; /* Already gone? */
|
|
}else{
|
|
rc = SQLITE_ERROR;
|
|
}
|
|
break;
|
|
}
|
|
if ( attr&FILE_ATTRIBUTE_DIRECTORY ){
|
|
rc = SQLITE_ERROR; /* Files only. */
|
|
break;
|
|
}
|
|
if ( osDeleteFileA(zConverted) ){
|
|
rc = SQLITE_OK; /* Deleted OK. */
|
|
break;
|
|
}
|
|
if ( !winRetryIoerr(&cnt, &lastErrno) ){
|
|
rc = SQLITE_ERROR; /* No more retries. */
|
|
break;
|
|
}
|
|
} while(1);
|
|
}
|
|
#endif
|
|
if( rc && rc!=SQLITE_IOERR_DELETE_NOENT ){
|
|
rc = winLogError(SQLITE_IOERR_DELETE, lastErrno, "winDelete", zFilename);
|
|
}else{
|
|
winLogIoerr(cnt, __LINE__);
|
|
}
|
|
sqlite3_free(zConverted);
|
|
OSTRACE(("DELETE name=%s, rc=%s\n", zFilename, sqlite3ErrName(rc)));
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** Check the existence and status of a file.
|
|
*/
|
|
static int winAccess(
|
|
sqlite3_vfs *pVfs, /* Not used on win32 */
|
|
const char *zFilename, /* Name of file to check */
|
|
int flags, /* Type of test to make on this file */
|
|
int *pResOut /* OUT: Result */
|
|
){
|
|
DWORD attr;
|
|
int rc = 0;
|
|
DWORD lastErrno = 0;
|
|
void *zConverted;
|
|
UNUSED_PARAMETER(pVfs);
|
|
|
|
SimulateIOError( return SQLITE_IOERR_ACCESS; );
|
|
OSTRACE(("ACCESS name=%s, flags=%x, pResOut=%p\n",
|
|
zFilename, flags, pResOut));
|
|
|
|
zConverted = winConvertFromUtf8Filename(zFilename);
|
|
if( zConverted==0 ){
|
|
OSTRACE(("ACCESS name=%s, rc=SQLITE_IOERR_NOMEM\n", zFilename));
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( osIsNT() ){
|
|
int cnt = 0;
|
|
WIN32_FILE_ATTRIBUTE_DATA sAttrData;
|
|
memset(&sAttrData, 0, sizeof(sAttrData));
|
|
while( !(rc = osGetFileAttributesExW((LPCWSTR)zConverted,
|
|
GetFileExInfoStandard,
|
|
&sAttrData)) && winRetryIoerr(&cnt, &lastErrno) ){}
|
|
if( rc ){
|
|
/* For an SQLITE_ACCESS_EXISTS query, treat a zero-length file
|
|
** as if it does not exist.
|
|
*/
|
|
if( flags==SQLITE_ACCESS_EXISTS
|
|
&& sAttrData.nFileSizeHigh==0
|
|
&& sAttrData.nFileSizeLow==0 ){
|
|
attr = INVALID_FILE_ATTRIBUTES;
|
|
}else{
|
|
attr = sAttrData.dwFileAttributes;
|
|
}
|
|
}else{
|
|
winLogIoerr(cnt, __LINE__);
|
|
if( lastErrno!=ERROR_FILE_NOT_FOUND && lastErrno!=ERROR_PATH_NOT_FOUND ){
|
|
sqlite3_free(zConverted);
|
|
return winLogError(SQLITE_IOERR_ACCESS, lastErrno, "winAccess",
|
|
zFilename);
|
|
}else{
|
|
attr = INVALID_FILE_ATTRIBUTES;
|
|
}
|
|
}
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
attr = osGetFileAttributesA((char*)zConverted);
|
|
}
|
|
#endif
|
|
sqlite3_free(zConverted);
|
|
switch( flags ){
|
|
case SQLITE_ACCESS_READ:
|
|
case SQLITE_ACCESS_EXISTS:
|
|
rc = attr!=INVALID_FILE_ATTRIBUTES;
|
|
break;
|
|
case SQLITE_ACCESS_READWRITE:
|
|
rc = attr!=INVALID_FILE_ATTRIBUTES &&
|
|
(attr & FILE_ATTRIBUTE_READONLY)==0;
|
|
break;
|
|
default:
|
|
assert(!"Invalid flags argument");
|
|
}
|
|
*pResOut = rc;
|
|
OSTRACE(("ACCESS name=%s, pResOut=%p, *pResOut=%d, rc=SQLITE_OK\n",
|
|
zFilename, pResOut, *pResOut));
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Returns non-zero if the specified path name starts with a drive letter
|
|
** followed by a colon character.
|
|
*/
|
|
static BOOL winIsDriveLetterAndColon(
|
|
const char *zPathname
|
|
){
|
|
return ( sqlite3Isalpha(zPathname[0]) && zPathname[1]==':' );
|
|
}
|
|
|
|
/*
|
|
** Returns non-zero if the specified path name should be used verbatim. If
|
|
** non-zero is returned from this function, the calling function must simply
|
|
** use the provided path name verbatim -OR- resolve it into a full path name
|
|
** using the GetFullPathName Win32 API function (if available).
|
|
*/
|
|
static BOOL winIsVerbatimPathname(
|
|
const char *zPathname
|
|
){
|
|
/*
|
|
** If the path name starts with a forward slash or a backslash, it is either
|
|
** a legal UNC name, a volume relative path, or an absolute path name in the
|
|
** "Unix" format on Windows. There is no easy way to differentiate between
|
|
** the final two cases; therefore, we return the safer return value of TRUE
|
|
** so that callers of this function will simply use it verbatim.
|
|
*/
|
|
if ( winIsDirSep(zPathname[0]) ){
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
** If the path name starts with a letter and a colon it is either a volume
|
|
** relative path or an absolute path. Callers of this function must not
|
|
** attempt to treat it as a relative path name (i.e. they should simply use
|
|
** it verbatim).
|
|
*/
|
|
if ( winIsDriveLetterAndColon(zPathname) ){
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
** If we get to this point, the path name should almost certainly be a purely
|
|
** relative one (i.e. not a UNC name, not absolute, and not volume relative).
|
|
*/
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
** Turn a relative pathname into a full pathname. Write the full
|
|
** pathname into zOut[]. zOut[] will be at least pVfs->mxPathname
|
|
** bytes in size.
|
|
*/
|
|
static int winFullPathname(
|
|
sqlite3_vfs *pVfs, /* Pointer to vfs object */
|
|
const char *zRelative, /* Possibly relative input path */
|
|
int nFull, /* Size of output buffer in bytes */
|
|
char *zFull /* Output buffer */
|
|
){
|
|
|
|
#if defined(__CYGWIN__)
|
|
SimulateIOError( return SQLITE_ERROR );
|
|
UNUSED_PARAMETER(nFull);
|
|
assert( nFull>=pVfs->mxPathname );
|
|
if ( sqlite3_data_directory && !winIsVerbatimPathname(zRelative) ){
|
|
/*
|
|
** NOTE: We are dealing with a relative path name and the data
|
|
** directory has been set. Therefore, use it as the basis
|
|
** for converting the relative path name to an absolute
|
|
** one by prepending the data directory and a slash.
|
|
*/
|
|
char *zOut = sqlite3MallocZero( pVfs->mxPathname+1 );
|
|
if( !zOut ){
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( cygwin_conv_path(
|
|
(osIsNT() ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_A) |
|
|
CCP_RELATIVE, zRelative, zOut, pVfs->mxPathname+1)<0 ){
|
|
sqlite3_free(zOut);
|
|
return winLogError(SQLITE_CANTOPEN_CONVPATH, (DWORD)errno,
|
|
"winFullPathname1", zRelative);
|
|
}else{
|
|
char *zUtf8 = winConvertToUtf8Filename(zOut);
|
|
if( !zUtf8 ){
|
|
sqlite3_free(zOut);
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s%c%s",
|
|
sqlite3_data_directory, winGetDirSep(), zUtf8);
|
|
sqlite3_free(zUtf8);
|
|
sqlite3_free(zOut);
|
|
}
|
|
}else{
|
|
char *zOut = sqlite3MallocZero( pVfs->mxPathname+1 );
|
|
if( !zOut ){
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( cygwin_conv_path(
|
|
(osIsNT() ? CCP_POSIX_TO_WIN_W : CCP_POSIX_TO_WIN_A),
|
|
zRelative, zOut, pVfs->mxPathname+1)<0 ){
|
|
sqlite3_free(zOut);
|
|
return winLogError(SQLITE_CANTOPEN_CONVPATH, (DWORD)errno,
|
|
"winFullPathname2", zRelative);
|
|
}else{
|
|
char *zUtf8 = winConvertToUtf8Filename(zOut);
|
|
if( !zUtf8 ){
|
|
sqlite3_free(zOut);
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zUtf8);
|
|
sqlite3_free(zUtf8);
|
|
sqlite3_free(zOut);
|
|
}
|
|
}
|
|
return SQLITE_OK;
|
|
#endif
|
|
|
|
#if (SQLITE_OS_WINCE || SQLITE_OS_WINRT) && !defined(__CYGWIN__)
|
|
SimulateIOError( return SQLITE_ERROR );
|
|
/* WinCE has no concept of a relative pathname, or so I am told. */
|
|
/* WinRT has no way to convert a relative path to an absolute one. */
|
|
if ( sqlite3_data_directory && !winIsVerbatimPathname(zRelative) ){
|
|
/*
|
|
** NOTE: We are dealing with a relative path name and the data
|
|
** directory has been set. Therefore, use it as the basis
|
|
** for converting the relative path name to an absolute
|
|
** one by prepending the data directory and a backslash.
|
|
*/
|
|
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s%c%s",
|
|
sqlite3_data_directory, winGetDirSep(), zRelative);
|
|
}else{
|
|
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zRelative);
|
|
}
|
|
return SQLITE_OK;
|
|
#endif
|
|
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && !defined(__CYGWIN__)
|
|
DWORD nByte;
|
|
void *zConverted;
|
|
char *zOut;
|
|
|
|
/* If this path name begins with "/X:", where "X" is any alphabetic
|
|
** character, discard the initial "/" from the pathname.
|
|
*/
|
|
if( zRelative[0]=='/' && winIsDriveLetterAndColon(zRelative+1) ){
|
|
zRelative++;
|
|
}
|
|
|
|
/* It's odd to simulate an io-error here, but really this is just
|
|
** using the io-error infrastructure to test that SQLite handles this
|
|
** function failing. This function could fail if, for example, the
|
|
** current working directory has been unlinked.
|
|
*/
|
|
SimulateIOError( return SQLITE_ERROR );
|
|
if ( sqlite3_data_directory && !winIsVerbatimPathname(zRelative) ){
|
|
/*
|
|
** NOTE: We are dealing with a relative path name and the data
|
|
** directory has been set. Therefore, use it as the basis
|
|
** for converting the relative path name to an absolute
|
|
** one by prepending the data directory and a backslash.
|
|
*/
|
|
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s%c%s",
|
|
sqlite3_data_directory, winGetDirSep(), zRelative);
|
|
return SQLITE_OK;
|
|
}
|
|
zConverted = winConvertFromUtf8Filename(zRelative);
|
|
if( zConverted==0 ){
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
if( osIsNT() ){
|
|
LPWSTR zTemp;
|
|
nByte = osGetFullPathNameW((LPCWSTR)zConverted, 0, 0, 0);
|
|
if( nByte==0 ){
|
|
sqlite3_free(zConverted);
|
|
return winLogError(SQLITE_CANTOPEN_FULLPATH, osGetLastError(),
|
|
"winFullPathname1", zRelative);
|
|
}
|
|
nByte += 3;
|
|
zTemp = sqlite3MallocZero( nByte*sizeof(zTemp[0]) );
|
|
if( zTemp==0 ){
|
|
sqlite3_free(zConverted);
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
nByte = osGetFullPathNameW((LPCWSTR)zConverted, nByte, zTemp, 0);
|
|
if( nByte==0 ){
|
|
sqlite3_free(zConverted);
|
|
sqlite3_free(zTemp);
|
|
return winLogError(SQLITE_CANTOPEN_FULLPATH, osGetLastError(),
|
|
"winFullPathname2", zRelative);
|
|
}
|
|
sqlite3_free(zConverted);
|
|
zOut = winUnicodeToUtf8(zTemp);
|
|
sqlite3_free(zTemp);
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
char *zTemp;
|
|
nByte = osGetFullPathNameA((char*)zConverted, 0, 0, 0);
|
|
if( nByte==0 ){
|
|
sqlite3_free(zConverted);
|
|
return winLogError(SQLITE_CANTOPEN_FULLPATH, osGetLastError(),
|
|
"winFullPathname3", zRelative);
|
|
}
|
|
nByte += 3;
|
|
zTemp = sqlite3MallocZero( nByte*sizeof(zTemp[0]) );
|
|
if( zTemp==0 ){
|
|
sqlite3_free(zConverted);
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
nByte = osGetFullPathNameA((char*)zConverted, nByte, zTemp, 0);
|
|
if( nByte==0 ){
|
|
sqlite3_free(zConverted);
|
|
sqlite3_free(zTemp);
|
|
return winLogError(SQLITE_CANTOPEN_FULLPATH, osGetLastError(),
|
|
"winFullPathname4", zRelative);
|
|
}
|
|
sqlite3_free(zConverted);
|
|
zOut = sqlite3_win32_mbcs_to_utf8(zTemp);
|
|
sqlite3_free(zTemp);
|
|
}
|
|
#endif
|
|
if( zOut ){
|
|
sqlite3_snprintf(MIN(nFull, pVfs->mxPathname), zFull, "%s", zOut);
|
|
sqlite3_free(zOut);
|
|
return SQLITE_OK;
|
|
}else{
|
|
return SQLITE_IOERR_NOMEM;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
#ifndef SQLITE_OMIT_LOAD_EXTENSION
|
|
/*
|
|
** Interfaces for opening a shared library, finding entry points
|
|
** within the shared library, and closing the shared library.
|
|
*/
|
|
static void *winDlOpen(sqlite3_vfs *pVfs, const char *zFilename){
|
|
HANDLE h;
|
|
#if defined(__CYGWIN__)
|
|
int nFull = pVfs->mxPathname+1;
|
|
char *zFull = sqlite3MallocZero( nFull );
|
|
void *zConverted = 0;
|
|
if( zFull==0 ){
|
|
OSTRACE(("DLOPEN name=%s, handle=%p\n", zFilename, (void*)0));
|
|
return 0;
|
|
}
|
|
if( winFullPathname(pVfs, zFilename, nFull, zFull)!=SQLITE_OK ){
|
|
sqlite3_free(zFull);
|
|
OSTRACE(("DLOPEN name=%s, handle=%p\n", zFilename, (void*)0));
|
|
return 0;
|
|
}
|
|
zConverted = winConvertFromUtf8Filename(zFull);
|
|
sqlite3_free(zFull);
|
|
#else
|
|
void *zConverted = winConvertFromUtf8Filename(zFilename);
|
|
UNUSED_PARAMETER(pVfs);
|
|
#endif
|
|
if( zConverted==0 ){
|
|
OSTRACE(("DLOPEN name=%s, handle=%p\n", zFilename, (void*)0));
|
|
return 0;
|
|
}
|
|
if( osIsNT() ){
|
|
#if SQLITE_OS_WINRT
|
|
h = osLoadPackagedLibrary((LPCWSTR)zConverted, 0);
|
|
#else
|
|
h = osLoadLibraryW((LPCWSTR)zConverted);
|
|
#endif
|
|
}
|
|
#ifdef SQLITE_WIN32_HAS_ANSI
|
|
else{
|
|
h = osLoadLibraryA((char*)zConverted);
|
|
}
|
|
#endif
|
|
OSTRACE(("DLOPEN name=%s, handle=%p\n", zFilename, (void*)h));
|
|
sqlite3_free(zConverted);
|
|
return (void*)h;
|
|
}
|
|
static void winDlError(sqlite3_vfs *pVfs, int nBuf, char *zBufOut){
|
|
UNUSED_PARAMETER(pVfs);
|
|
winGetLastErrorMsg(osGetLastError(), nBuf, zBufOut);
|
|
}
|
|
static void (*winDlSym(sqlite3_vfs *pVfs,void *pH,const char *zSym))(void){
|
|
FARPROC proc;
|
|
UNUSED_PARAMETER(pVfs);
|
|
proc = osGetProcAddressA((HANDLE)pH, zSym);
|
|
OSTRACE(("DLSYM handle=%p, symbol=%s, address=%p\n",
|
|
(void*)pH, zSym, (void*)proc));
|
|
return (void(*)(void))proc;
|
|
}
|
|
static void winDlClose(sqlite3_vfs *pVfs, void *pHandle){
|
|
UNUSED_PARAMETER(pVfs);
|
|
osFreeLibrary((HANDLE)pHandle);
|
|
OSTRACE(("DLCLOSE handle=%p\n", (void*)pHandle));
|
|
}
|
|
#else /* if SQLITE_OMIT_LOAD_EXTENSION is defined: */
|
|
#define winDlOpen 0
|
|
#define winDlError 0
|
|
#define winDlSym 0
|
|
#define winDlClose 0
|
|
#endif
|
|
|
|
|
|
/*
|
|
** Write up to nBuf bytes of randomness into zBuf.
|
|
*/
|
|
static int winRandomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
|
|
int n = 0;
|
|
UNUSED_PARAMETER(pVfs);
|
|
#if defined(SQLITE_TEST) || defined(SQLITE_OMIT_RANDOMNESS)
|
|
n = nBuf;
|
|
memset(zBuf, 0, nBuf);
|
|
#else
|
|
if( sizeof(SYSTEMTIME)<=nBuf-n ){
|
|
SYSTEMTIME x;
|
|
osGetSystemTime(&x);
|
|
memcpy(&zBuf[n], &x, sizeof(x));
|
|
n += sizeof(x);
|
|
}
|
|
if( sizeof(DWORD)<=nBuf-n ){
|
|
DWORD pid = osGetCurrentProcessId();
|
|
memcpy(&zBuf[n], &pid, sizeof(pid));
|
|
n += sizeof(pid);
|
|
}
|
|
#if SQLITE_OS_WINRT
|
|
if( sizeof(ULONGLONG)<=nBuf-n ){
|
|
ULONGLONG cnt = osGetTickCount64();
|
|
memcpy(&zBuf[n], &cnt, sizeof(cnt));
|
|
n += sizeof(cnt);
|
|
}
|
|
#else
|
|
if( sizeof(DWORD)<=nBuf-n ){
|
|
DWORD cnt = osGetTickCount();
|
|
memcpy(&zBuf[n], &cnt, sizeof(cnt));
|
|
n += sizeof(cnt);
|
|
}
|
|
#endif
|
|
if( sizeof(LARGE_INTEGER)<=nBuf-n ){
|
|
LARGE_INTEGER i;
|
|
osQueryPerformanceCounter(&i);
|
|
memcpy(&zBuf[n], &i, sizeof(i));
|
|
n += sizeof(i);
|
|
}
|
|
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
|
|
if( sizeof(UUID)<=nBuf-n ){
|
|
UUID id;
|
|
memset(&id, 0, sizeof(UUID));
|
|
osUuidCreate(&id);
|
|
memcpy(&zBuf[n], &id, sizeof(UUID));
|
|
n += sizeof(UUID);
|
|
}
|
|
if( sizeof(UUID)<=nBuf-n ){
|
|
UUID id;
|
|
memset(&id, 0, sizeof(UUID));
|
|
osUuidCreateSequential(&id);
|
|
memcpy(&zBuf[n], &id, sizeof(UUID));
|
|
n += sizeof(UUID);
|
|
}
|
|
#endif
|
|
#endif /* defined(SQLITE_TEST) || defined(SQLITE_ZERO_PRNG_SEED) */
|
|
return n;
|
|
}
|
|
|
|
|
|
/*
|
|
** Sleep for a little while. Return the amount of time slept.
|
|
*/
|
|
static int winSleep(sqlite3_vfs *pVfs, int microsec){
|
|
sqlite3_win32_sleep((microsec+999)/1000);
|
|
UNUSED_PARAMETER(pVfs);
|
|
return ((microsec+999)/1000)*1000;
|
|
}
|
|
|
|
/*
|
|
** The following variable, if set to a non-zero value, is interpreted as
|
|
** the number of seconds since 1970 and is used to set the result of
|
|
** sqlite3OsCurrentTime() during testing.
|
|
*/
|
|
#ifdef SQLITE_TEST
|
|
int sqlite3_current_time = 0; /* Fake system time in seconds since 1970. */
|
|
#endif
|
|
|
|
/*
|
|
** Find the current time (in Universal Coordinated Time). Write into *piNow
|
|
** the current time and date as a Julian Day number times 86_400_000. In
|
|
** other words, write into *piNow the number of milliseconds since the Julian
|
|
** epoch of noon in Greenwich on November 24, 4714 B.C according to the
|
|
** proleptic Gregorian calendar.
|
|
**
|
|
** On success, return SQLITE_OK. Return SQLITE_ERROR if the time and date
|
|
** cannot be found.
|
|
*/
|
|
static int winCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *piNow){
|
|
/* FILETIME structure is a 64-bit value representing the number of
|
|
100-nanosecond intervals since January 1, 1601 (= JD 2305813.5).
|
|
*/
|
|
FILETIME ft;
|
|
static const sqlite3_int64 winFiletimeEpoch = 23058135*(sqlite3_int64)8640000;
|
|
#ifdef SQLITE_TEST
|
|
static const sqlite3_int64 unixEpoch = 24405875*(sqlite3_int64)8640000;
|
|
#endif
|
|
/* 2^32 - to avoid use of LL and warnings in gcc */
|
|
static const sqlite3_int64 max32BitValue =
|
|
(sqlite3_int64)2000000000 + (sqlite3_int64)2000000000 +
|
|
(sqlite3_int64)294967296;
|
|
|
|
#if SQLITE_OS_WINCE
|
|
SYSTEMTIME time;
|
|
osGetSystemTime(&time);
|
|
/* if SystemTimeToFileTime() fails, it returns zero. */
|
|
if (!osSystemTimeToFileTime(&time,&ft)){
|
|
return SQLITE_ERROR;
|
|
}
|
|
#else
|
|
osGetSystemTimeAsFileTime( &ft );
|
|
#endif
|
|
|
|
*piNow = winFiletimeEpoch +
|
|
((((sqlite3_int64)ft.dwHighDateTime)*max32BitValue) +
|
|
(sqlite3_int64)ft.dwLowDateTime)/(sqlite3_int64)10000;
|
|
|
|
#ifdef SQLITE_TEST
|
|
if( sqlite3_current_time ){
|
|
*piNow = 1000*(sqlite3_int64)sqlite3_current_time + unixEpoch;
|
|
}
|
|
#endif
|
|
UNUSED_PARAMETER(pVfs);
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
/*
|
|
** Find the current time (in Universal Coordinated Time). Write the
|
|
** current time and date as a Julian Day number into *prNow and
|
|
** return 0. Return 1 if the time and date cannot be found.
|
|
*/
|
|
static int winCurrentTime(sqlite3_vfs *pVfs, double *prNow){
|
|
int rc;
|
|
sqlite3_int64 i;
|
|
rc = winCurrentTimeInt64(pVfs, &i);
|
|
if( !rc ){
|
|
*prNow = i/86400000.0;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
** The idea is that this function works like a combination of
|
|
** GetLastError() and FormatMessage() on Windows (or errno and
|
|
** strerror_r() on Unix). After an error is returned by an OS
|
|
** function, SQLite calls this function with zBuf pointing to
|
|
** a buffer of nBuf bytes. The OS layer should populate the
|
|
** buffer with a nul-terminated UTF-8 encoded error message
|
|
** describing the last IO error to have occurred within the calling
|
|
** thread.
|
|
**
|
|
** If the error message is too large for the supplied buffer,
|
|
** it should be truncated. The return value of xGetLastError
|
|
** is zero if the error message fits in the buffer, or non-zero
|
|
** otherwise (if the message was truncated). If non-zero is returned,
|
|
** then it is not necessary to include the nul-terminator character
|
|
** in the output buffer.
|
|
**
|
|
** Not supplying an error message will have no adverse effect
|
|
** on SQLite. It is fine to have an implementation that never
|
|
** returns an error message:
|
|
**
|
|
** int xGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
|
|
** assert(zBuf[0]=='\0');
|
|
** return 0;
|
|
** }
|
|
**
|
|
** However if an error message is supplied, it will be incorporated
|
|
** by sqlite into the error message available to the user using
|
|
** sqlite3_errmsg(), possibly making IO errors easier to debug.
|
|
*/
|
|
static int winGetLastError(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
|
|
UNUSED_PARAMETER(pVfs);
|
|
return winGetLastErrorMsg(osGetLastError(), nBuf, zBuf);
|
|
}
|
|
|
|
/*
|
|
** Initialize and deinitialize the operating system interface.
|
|
*/
|
|
int sqlite3_os_init(void){
|
|
static sqlite3_vfs winVfs = {
|
|
3, /* iVersion */
|
|
sizeof(winFile), /* szOsFile */
|
|
SQLITE_WIN32_MAX_PATH_BYTES, /* mxPathname */
|
|
0, /* pNext */
|
|
"win32", /* zName */
|
|
0, /* pAppData */
|
|
winOpen, /* xOpen */
|
|
winDelete, /* xDelete */
|
|
winAccess, /* xAccess */
|
|
winFullPathname, /* xFullPathname */
|
|
winDlOpen, /* xDlOpen */
|
|
winDlError, /* xDlError */
|
|
winDlSym, /* xDlSym */
|
|
winDlClose, /* xDlClose */
|
|
winRandomness, /* xRandomness */
|
|
winSleep, /* xSleep */
|
|
winCurrentTime, /* xCurrentTime */
|
|
winGetLastError, /* xGetLastError */
|
|
winCurrentTimeInt64, /* xCurrentTimeInt64 */
|
|
winSetSystemCall, /* xSetSystemCall */
|
|
winGetSystemCall, /* xGetSystemCall */
|
|
winNextSystemCall, /* xNextSystemCall */
|
|
};
|
|
#if defined(SQLITE_WIN32_HAS_WIDE)
|
|
static sqlite3_vfs winLongPathVfs = {
|
|
3, /* iVersion */
|
|
sizeof(winFile), /* szOsFile */
|
|
SQLITE_WINNT_MAX_PATH_BYTES, /* mxPathname */
|
|
0, /* pNext */
|
|
"win32-longpath", /* zName */
|
|
0, /* pAppData */
|
|
winOpen, /* xOpen */
|
|
winDelete, /* xDelete */
|
|
winAccess, /* xAccess */
|
|
winFullPathname, /* xFullPathname */
|
|
winDlOpen, /* xDlOpen */
|
|
winDlError, /* xDlError */
|
|
winDlSym, /* xDlSym */
|
|
winDlClose, /* xDlClose */
|
|
winRandomness, /* xRandomness */
|
|
winSleep, /* xSleep */
|
|
winCurrentTime, /* xCurrentTime */
|
|
winGetLastError, /* xGetLastError */
|
|
winCurrentTimeInt64, /* xCurrentTimeInt64 */
|
|
winSetSystemCall, /* xSetSystemCall */
|
|
winGetSystemCall, /* xGetSystemCall */
|
|
winNextSystemCall, /* xNextSystemCall */
|
|
};
|
|
#endif
|
|
|
|
/* Double-check that the aSyscall[] array has been constructed
|
|
** correctly. See ticket [bb3a86e890c8e96ab] */
|
|
assert( ArraySize(aSyscall)==80 );
|
|
|
|
/* get memory map allocation granularity */
|
|
memset(&winSysInfo, 0, sizeof(SYSTEM_INFO));
|
|
#if SQLITE_OS_WINRT
|
|
osGetNativeSystemInfo(&winSysInfo);
|
|
#else
|
|
osGetSystemInfo(&winSysInfo);
|
|
#endif
|
|
assert( winSysInfo.dwAllocationGranularity>0 );
|
|
assert( winSysInfo.dwPageSize>0 );
|
|
|
|
sqlite3_vfs_register(&winVfs, 1);
|
|
|
|
#if defined(SQLITE_WIN32_HAS_WIDE)
|
|
sqlite3_vfs_register(&winLongPathVfs, 0);
|
|
#endif
|
|
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
int sqlite3_os_end(void){
|
|
#if SQLITE_OS_WINRT
|
|
if( sleepObj!=NULL ){
|
|
osCloseHandle(sleepObj);
|
|
sleepObj = NULL;
|
|
}
|
|
#endif
|
|
return SQLITE_OK;
|
|
}
|
|
|
|
#endif /* SQLITE_OS_WIN */
|