vfs: add vfs_get_fsid() helper
Wrapper around statfs() interface. Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
parent
77115225ac
commit
ec86ff5689
14
fs/statfs.c
14
fs/statfs.c
|
@ -67,6 +67,20 @@ static int statfs_by_dentry(struct dentry *dentry, struct kstatfs *buf)
|
|||
return retval;
|
||||
}
|
||||
|
||||
int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid)
|
||||
{
|
||||
struct kstatfs st;
|
||||
int error;
|
||||
|
||||
error = statfs_by_dentry(dentry, &st);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
*fsid = st.f_fsid;
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(vfs_get_fsid);
|
||||
|
||||
int vfs_statfs(const struct path *path, struct kstatfs *buf)
|
||||
{
|
||||
int error;
|
||||
|
|
|
@ -41,4 +41,7 @@ struct kstatfs {
|
|||
#define ST_NODIRATIME 0x0800 /* do not update directory access times */
|
||||
#define ST_RELATIME 0x1000 /* update atime relative to mtime/ctime */
|
||||
|
||||
struct dentry;
|
||||
extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid);
|
||||
|
||||
#endif
|
||||
|
|
Loading…
Reference in a new issue