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restructure readdir, add readdir_plus

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Does not enable READDIR_AUTO. Might add in the future.
This commit is contained in:
Antonio SJ Musumeci
2019-06-14 08:59:04 -04:00
parent 10e8bd9fa3
commit d119807adb
29 changed files with 1081 additions and 364 deletions
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38
libfuse/include/fuse_lowlevel.h
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@ -605,7 +605,11 @@ struct fuse_lowlevel_ops {
* @param fi file information
*/
void (*readdir) (fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info *fi);
struct fuse_file_info *llffi);
void (*readdir_plus)(fuse_req_t req, fuse_ino_t ino,
size_t size, off_t off,
struct fuse_file_info *ffi);
/**
* Release an open directory
@ -1262,38 +1266,6 @@ int fuse_reply_lock(fuse_req_t req, const struct flock *lock);
*/
int fuse_reply_bmap(fuse_req_t req, uint64_t idx);
/* ----------------------------------------------------------- *
* Filling a buffer in readdir *
* ----------------------------------------------------------- */
/**
* Add a directory entry to the buffer
*
* Buffer needs to be large enough to hold the entry. If it's not,
* then the entry is not filled in but the size of the entry is still
* returned. The caller can check this by comparing the bufsize
* parameter with the returned entry size. If the entry size is
* larger than the buffer size, the operation failed.
*
* From the 'stbuf' argument the st_ino field and bits 12-15 of the
* st_mode field are used. The other fields are ignored.
*
* Note: offsets do not necessarily represent physical offsets, and
* could be any marker, that enables the implementation to find a
* specific point in the directory stream.
*
* @param req request handle
* @param buf the point where the new entry will be added to the buffer
* @param bufsize remaining size of the buffer
* @param name the name of the entry
* @param stbuf the file attributes
* @param off the offset of the next entry
* @return the space needed for the entry
*/
size_t fuse_add_direntry(fuse_req_t req, char *buf, size_t bufsize,
const char *name, const struct stat *stbuf,
off_t off);
/**
* Reply to ask for data fetch and output buffer preparation. ioctl
* will be retried with the specified input data fetched and output