*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/obdclass/idmap.c
*
#define DEBUG_SUBSYSTEM S_SEC
#include <linux/user_namespace.h>
-#ifdef HAVE_UIDGID_HEADER
-# include <linux/uidgid.h>
-#endif
+#include <linux/uidgid.h>
+
#include <lustre_idmap.h>
#include <upcall_cache.h>
#include <md_object.h>
#include <obd_support.h>
-#define lustre_get_group_info(group_info) do { \
- atomic_inc(&(group_info)->usage); \
-} while (0)
-
-#define lustre_put_group_info(group_info) do { \
- if (atomic_dec_and_test(&(group_info)->usage)) \
- groups_free(group_info); \
-} while (0)
-
/*
* groups_search() is copied from linux kernel!
* A simple bsearch.
void lustre_groups_from_list(struct group_info *ginfo, gid_t *glist)
{
+#ifdef HAVE_GROUP_INFO_GID
+ memcpy(ginfo->gid, glist, ginfo->ngroups * sizeof(__u32));
+#else
int i;
int count = ginfo->ngroups;
memcpy(ginfo->blocks[i], glist + off, len);
count -= cp_count;
}
+#endif
}
EXPORT_SYMBOL(lustre_groups_from_list);
/* a simple shell-metzner sort */
void lustre_groups_sort(struct group_info *group_info)
{
- int base, max, stride;
- int gidsetsize = group_info->ngroups;
+ int base, max, stride;
+ int gidsetsize = group_info->ngroups;
- for (stride = 1; stride < gidsetsize; stride = 3 * stride + 1)
- ; /* nothing */
- stride /= 3;
+ for (stride = 1; stride < gidsetsize; stride = 3 * stride + 1)
+ ; /* nothing */
+ stride /= 3;
while (stride) {
max = gidsetsize - stride;
if (!group_info)
return 0;
- lustre_get_group_info(group_info);
+ atomic_inc(&group_info->usage);
rc = lustre_groups_search(group_info, grp);
- lustre_put_group_info(group_info);
+ if (atomic_dec_and_test(&group_info->usage))
+ groups_free(group_info);
}
return rc;
}