/*
* Reclaim an inode so that it can be used for other purposes.
*/
int
ulfs_reclaim(struct vnode *vp)
{
struct inode *ip = VTOI(vp);
if (prtactive && vp->v_usecount > 1)
vprint("ulfs_reclaim: pushing active", vp);
/* XXX: do we really need two of these? */
/* note: originally the first was inside a wapbl txn */
lfs_update(vp, NULL, NULL, UPDATE_CLOSE);
lfs_update(vp, NULL, NULL, UPDATE_CLOSE);
/*
* Remove the inode from the vnode cache.
*/
vcache_remove(vp->v_mount, &ip->i_number, sizeof(ip->i_number));
if (ip->i_devvp) {
vrele(ip->i_devvp);
ip->i_devvp = 0;
}
#if defined(LFS_QUOTA) || defined(LFS_QUOTA2)
ulfsquota_free(ip);
#endif
#ifdef LFS_DIRHASH
if (ip->i_dirhash != NULL)
ulfsdirhash_free(ip);
#endif
return (0);
}
int
ulfs_rmdir(void *v)
{
struct vop_rmdir_args /* {
struct vnode *a_dvp;
struct vnode *a_vp;
struct componentname *a_cnp;
} */ *ap = v;
struct vnode *vp, *dvp;
struct componentname *cnp;
struct inode *ip, *dp;
int error;
struct ulfs_lookup_results *ulr;
vp = ap->a_vp;
dvp = ap->a_dvp;
cnp = ap->a_cnp;
ip = VTOI(vp);
dp = VTOI(dvp);
/* XXX should handle this material another way */
ulr = &dp->i_crap;
ULFS_CHECK_CRAPCOUNTER(dp);
/*
* No rmdir "." or of mounted directories please.
*/
if (dp == ip || vp->v_mountedhere != NULL) {
if (dp == ip)
vrele(dvp);
else
vput(dvp);
vput(vp);
return (EINVAL);
}
fstrans_start(dvp->v_mount, FSTRANS_SHARED);
/*
* Do not remove a directory that is in the process of being renamed.
* Verify that the directory is empty (and valid). (Rmdir ".." won't
* be valid since ".." will contain a reference to the current
* directory and thus be non-empty.)
*/
error = 0;
if (ip->i_nlink != 2 ||
!ulfs_dirempty(ip, dp->i_number, cnp->cn_cred)) {
error = ENOTEMPTY;
goto out;
}
if ((dp->i_flags & APPEND) ||
(ip->i_flags & (IMMUTABLE | APPEND))) {
error = EPERM;
goto out;
}
/*
* Delete reference to directory before purging
* inode. If we crash in between, the directory
* will be reattached to lost+found,
*/
error = ulfs_dirremove(dvp, ulr, ip, cnp->cn_flags, 1);
if (error) {
goto out;
}
VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK);
cache_purge(dvp);
/*
* Truncate inode. The only stuff left in the directory is "." and
* "..". The "." reference is inconsequential since we're quashing
* it.
*/
dp->i_nlink--;
DIP_ASSIGN(dp, nlink, dp->i_nlink);
dp->i_flag |= IN_CHANGE;
ip->i_nlink--;
DIP_ASSIGN(ip, nlink, ip->i_nlink);
ip->i_flag |= IN_CHANGE;
error = lfs_truncate(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
cache_purge(vp);
#ifdef LFS_DIRHASH
if (ip->i_dirhash != NULL)
ulfsdirhash_free(ip);
#endif
out:
VN_KNOTE(vp, NOTE_DELETE);
vput(vp);
fstrans_done(dvp->v_mount);
vput(dvp);
return (error);
}
