mirror of
https://git.postgresql.org/git/postgresql.git
synced 2026-02-12 01:18:35 +08:00
2ff501590b
Also performed an initial run through of upgrading our Copyright date to extend to 2005 ... first run here was very simple ... change everything where: grep 1996-2004 && the word 'Copyright' ... scanned through the generated list with 'less' first, and after, to make sure that I only picked up the right entries ...
46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* buffile.h
|
|
* Management of large buffered files, primarily temporary files.
|
|
*
|
|
* The BufFile routines provide a partial replacement for stdio atop
|
|
* virtual file descriptors managed by fd.c. Currently they only support
|
|
* buffered access to a virtual file, without any of stdio's formatting
|
|
* features. That's enough for immediate needs, but the set of facilities
|
|
* could be expanded if necessary.
|
|
*
|
|
* BufFile also supports working with temporary files that exceed the OS
|
|
* file size limit and/or the largest offset representable in an int.
|
|
* It might be better to split that out as a separately accessible module,
|
|
* but currently we have no need for oversize temp files without buffered
|
|
* access.
|
|
*
|
|
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
* $PostgreSQL: pgsql/src/include/storage/buffile.h,v 1.18 2004/12/31 22:03:42 pgsql Exp $
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
#ifndef BUFFILE_H
|
|
#define BUFFILE_H
|
|
|
|
/* BufFile is an opaque type whose details are not known outside buffile.c. */
|
|
|
|
typedef struct BufFile BufFile;
|
|
|
|
/*
|
|
* prototypes for functions in buffile.c
|
|
*/
|
|
|
|
extern BufFile *BufFileCreateTemp(bool interXact);
|
|
extern void BufFileClose(BufFile *file);
|
|
extern size_t BufFileRead(BufFile *file, void *ptr, size_t size);
|
|
extern size_t BufFileWrite(BufFile *file, void *ptr, size_t size);
|
|
extern int BufFileSeek(BufFile *file, int fileno, long offset, int whence);
|
|
extern void BufFileTell(BufFile *file, int *fileno, long *offset);
|
|
extern int BufFileSeekBlock(BufFile *file, long blknum);
|
|
|
|
#endif /* BUFFILE_H */
|