Update core ZFS code from build 121 to build 141.

[zfs.git] / module / zfs / zfs_fuid.c

diff --git a/module/zfs/zfs_fuid.c b/module/zfs/zfs_fuid.c
index e704b1c..8c0424e 100644 (file)
--- a/module/zfs/zfs_fuid.c
+++ b/module/zfs/zfs_fuid.c
@@ -19,12 +19,10 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #include <sys/zfs_context.h>
-#include <sys/sunddi.h>
 #include <sys/dmu.h>
 #include <sys/avl.h>
 #include <sys/zap.h>
@@ -377,7 +375,7 @@ zfs_fuid_find_by_idx(zfsvfs_t *zfsvfs, uint32_t idx)
 
        rw_enter(&zfsvfs->z_fuid_lock, RW_READER);
 
-       if (zfsvfs->z_fuid_obj)
+       if (zfsvfs->z_fuid_obj || zfsvfs->z_fuid_dirty)
                domain = zfs_fuid_idx_domain(&zfsvfs->z_fuid_idx, idx);
        else
                domain = nulldomain;
@@ -390,10 +388,26 @@ zfs_fuid_find_by_idx(zfsvfs_t *zfsvfs, uint32_t idx)
 void
 zfs_fuid_map_ids(znode_t *zp, cred_t *cr, uid_t *uidp, uid_t *gidp)
 {
-       *uidp = zfs_fuid_map_id(zp->z_zfsvfs, zp->z_phys->zp_uid,
-           cr, ZFS_OWNER);
-       *gidp = zfs_fuid_map_id(zp->z_zfsvfs, zp->z_phys->zp_gid,
-           cr, ZFS_GROUP);
+       uint64_t fuid, fgid;
+       sa_bulk_attr_t bulk[2];
+       int count = 0;
+
+       if (IS_EPHEMERAL(zp->z_uid) || IS_EPHEMERAL(zp->z_gid)) {
+               SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zp->z_zfsvfs),
+                   NULL, &fuid, 8);
+               SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zp->z_zfsvfs),
+                   NULL, &fgid, 8);
+               VERIFY(0 == sa_bulk_lookup(zp->z_sa_hdl, bulk, count));
+       }
+       if (IS_EPHEMERAL(zp->z_uid))
+               *uidp = zfs_fuid_map_id(zp->z_zfsvfs, zp->z_uid, cr, ZFS_OWNER);
+       else
+               *uidp = zp->z_uid;
+       if (IS_EPHEMERAL(zp->z_gid))
+               *gidp = zfs_fuid_map_id(zp->z_zfsvfs,
+                   zp->z_gid, cr, ZFS_GROUP);
+       else
+               *gidp = zp->z_gid;
 }
 
 uid_t
@@ -427,7 +441,7 @@ zfs_fuid_map_id(zfsvfs_t *zfsvfs, uint64_t fuid,
  * If ACL has multiple domains, then keep only one copy of each unique
  * domain.
  */
-static void
+void
 zfs_fuid_node_add(zfs_fuid_info_t **fuidpp, const char *domain, uint32_t rid,
     uint64_t idx, uint64_t id, zfs_fuid_type_t type)
 {
@@ -488,6 +502,11 @@ zfs_fuid_node_add(zfs_fuid_info_t **fuidpp, const char *domain, uint32_t rid,
 
 /*
  * Create a file system FUID, based on information in the users cred
+ *
+ * If cred contains KSID_OWNER then it should be used to determine
+ * the uid otherwise cred's uid will be used. By default cred's gid
+ * is used unless it's an ephemeral ID in which case KSID_GROUP will
+ * be used if it exists.
  */
 uint64_t
 zfs_fuid_create_cred(zfsvfs_t *zfsvfs, zfs_fuid_type_t type,
@@ -503,18 +522,27 @@ zfs_fuid_create_cred(zfsvfs_t *zfsvfs, zfs_fuid_type_t type,
        VERIFY(type == ZFS_OWNER || type == ZFS_GROUP);
 
        ksid = crgetsid(cr, (type == ZFS_OWNER) ? KSID_OWNER : KSID_GROUP);
-       if (ksid) {
-               id = ksid_getid(ksid);
-       } else {
-               if (type == ZFS_OWNER)
-                       id = crgetuid(cr);
-               else
-                       id = crgetgid(cr);
+
+       if (!zfsvfs->z_use_fuids || (ksid == NULL)) {
+               id = (type == ZFS_OWNER) ? crgetuid(cr) : crgetgid(cr);
+
+               if (IS_EPHEMERAL(id))
+                       return ((type == ZFS_OWNER) ? UID_NOBODY : GID_NOBODY);
+
+               return ((uint64_t)id);
        }
 
-       if (!zfsvfs->z_use_fuids || (!IS_EPHEMERAL(id)))
+       /*
+        * ksid is present and FUID is supported
+        */
+       id = (type == ZFS_OWNER) ? ksid_getid(ksid) : crgetgid(cr);
+
+       if (!IS_EPHEMERAL(id))
                return ((uint64_t)id);
 
+       if (type == ZFS_GROUP)
+               id = ksid_getid(ksid);
+
        rid = ksid_getrid(ksid);
        domain = ksid_getdomain(ksid);