/* ARGSUSED */
static int
zfsctl_snapdir_remove(vnode_t *dvp, char *name, vnode_t *cwd, cred_t *cr,
caller_context_t *ct, int flags)
{
zfsctl_snapdir_t *sdp = dvp->v_data;
zfs_snapentry_t *sep;
zfs_snapentry_t search;
zfsvfs_t *zfsvfs;
char snapname[MAXNAMELEN];
char real[MAXNAMELEN];
int err;
zfsvfs = dvp->v_vfsp->vfs_data;
ZFS_ENTER(zfsvfs);
if ((flags & FIGNORECASE) || zfsvfs->z_case == ZFS_CASE_INSENSITIVE) {
err = dmu_snapshot_realname(zfsvfs->z_os, name, real,
MAXNAMELEN, NULL);
if (err == 0) {
name = real;
} else if (err != ENOTSUP) {
ZFS_EXIT(zfsvfs);
return (err);
}
}
ZFS_EXIT(zfsvfs);
err = zfsctl_snapshot_zname(dvp, name, MAXNAMELEN, snapname);
if (!err)
err = zfs_secpolicy_destroy_perms(snapname, cr);
if (err)
return (err);
mutex_enter(&sdp->sd_lock);
search.se_name = name;
sep = avl_find(&sdp->sd_snaps, &search, NULL);
if (sep) {
avl_remove(&sdp->sd_snaps, sep);
err = zfsctl_unmount_snap(sep, MS_FORCE, cr);
if (err)
avl_add(&sdp->sd_snaps, sep);
else
err = dmu_objset_destroy(snapname, B_FALSE);
} else {
err = ENOENT;
}
mutex_exit(&sdp->sd_lock);
return (err);
}
/* ARGSUSED */
int
zfsctl_snapdir_remove(struct inode *dip, char *name, cred_t *cr, int flags)
{
zfs_sb_t *zsb = ITOZSB(dip);
char *snapname, *real;
int error;
ZFS_ENTER(zsb);
snapname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
real = kmem_alloc(MAXNAMELEN, KM_SLEEP);
if (zsb->z_case == ZFS_CASE_INSENSITIVE) {
error = dmu_snapshot_realname(zsb->z_os, name, real,
MAXNAMELEN, NULL);
if (error == 0) {
name = real;
} else if (error != ENOTSUP) {
goto out;
}
}
error = zfsctl_snapshot_zname(dip, name, MAXNAMELEN, snapname);
if (!error)
error = zfs_secpolicy_destroy_perms(snapname, cr);
if (error)
goto out;
error = zfsctl_unmount_snapshot(zsb, name, MNT_FORCE);
if ((error == 0) || (error == ENOENT))
error = dmu_objset_destroy(snapname, B_FALSE);
out:
kmem_free(snapname, MAXNAMELEN);
kmem_free(real, MAXNAMELEN);
ZFS_EXIT(zsb);
return (error);
}
