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nfsd4: helper function for getting mounted_on ino 

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2012-10-01 17:50:56 -04:00
parent 3c40794b2d
commit ae7095a7c4
1 changed files with 18 additions and 12 deletions
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30
fs/nfsd/nfs4xdr.c
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@ -2014,6 +2014,22 @@ static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err)
return 0;
}
static int get_parent_attributes(struct svc_export *exp, struct kstat *stat)
{
struct path path = exp->ex_path;
int err;
path_get(&path);
while (follow_up(&path)) {
if (path.dentry != path.mnt->mnt_root)
break;
}
err = vfs_getattr(path.mnt, path.dentry, stat);
path_put(&path);
return err;
}
/*
* Note: @fhp can be NULL; in this case, we might have to compose the filehandle
* ourselves.
@ -2430,18 +2446,8 @@ out_acl:
* and this is the root of a cross-mounted filesystem.
*/
if (ignore_crossmnt == 0 &&
dentry == exp->ex_path.mnt->mnt_root) {
struct path path = exp->ex_path;
path_get(&path);
while (follow_up(&path)) {
if (path.dentry != path.mnt->mnt_root)
break;
}
err = vfs_getattr(path.mnt, path.dentry, &stat);
path_put(&path);
if (err)
goto out_nfserr;
}
dentry == exp->ex_path.mnt->mnt_root)
get_parent_attributes(exp, &stat);
WRITE64(stat.ino);
}
if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {