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libnilfs: add functions to get pathname or FD of mount point directory

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Add export functions to get the absolute path name or file descriptor
of the mount point directory (file system root directory).

[ changed to inline function definitions for v2.2.y ]

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
This commit is contained in:
Ryusuke Konishi 2024-02-29 20:57:55 +09:00
parent 4212b7faf2
commit bcc3ee8c8e
1 changed files with 25 additions and 0 deletions
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25
include/nilfs.h
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@ -113,6 +113,31 @@ static inline int nilfs_unlock_##name(struct nilfs *nilfs) \
NILFS_LOCK_FNS(cleaner, 0)
/**
* nilfs_get_root_path - get the path name string of the mount point
* @nilfs: nilfs object
*
* Return: The absolute path name of the mount point directory, or %NULL if
* unavailable.
*/
static inline const char *nilfs_get_root_path(const struct nilfs *nilfs)
{
return nilfs->n_ioc;
}
/**
* nilfs_get_root_fd - get the file descriptor of the mount point directory
* (file system root directory)
* @nilfs: nilfs object
*
* Return: The file descriptor of the mount point directory, or -1 if not
* available.
*/
static inline int nilfs_get_root_fd(const struct nilfs *nilfs)
{
return nilfs->n_iocfd;
}
/**
* struct nilfs_psegment - partial segment iterator
* @p_segnum: segment number