1 files changed, 89 insertions, 0 deletions
diff --git a/lib/util/util_id.c b/lib/util/util_id.c
new file mode 100644
index 0000000..19486f9
--- /dev/null
+++ b/lib/util/util_id.c
@@ -0,0 +1,89 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Helper routines for uid and gid arrays
+
+   Copyright (C) Guenther Deschner 2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "lib/util/samba_util.h"
+
+/****************************************************************************
+ Add a gid to an array of gids if it's not already there.
+****************************************************************************/
+
+bool add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
+			     gid_t **gids, uint32_t *num_gids)
+{
+	uint32_t i;
+
+	if ((*num_gids != 0) && (*gids == NULL)) {
+		/*
+		 * A former call to this routine has failed to allocate memory
+		 */
+		return false;
+	}
+
+	for (i=0; i<*num_gids; i++) {
+		if ((*gids)[i] == gid) {
+			return true;
+		}
+	}
+
+	*gids = talloc_realloc(mem_ctx, *gids, gid_t, *num_gids+1);
+	if (*gids == NULL) {
+		*num_gids = 0;
+		return false;
+	}
+
+	(*gids)[*num_gids] = gid;
+	*num_gids += 1;
+	return true;
+}
+
+/****************************************************************************
+ Add a uid to an array of uids if it's not already there.
+****************************************************************************/
+
+bool add_uid_to_array_unique(TALLOC_CTX *mem_ctx, uid_t uid,
+			     uid_t **uids, uint32_t *num_uids)
+{
+	uint32_t i;
+
+	if ((*num_uids != 0) && (*uids == NULL)) {
+		/*
+		 * A former call to this routine has failed to allocate memory
+		 */
+		return false;
+	}
+
+	for (i=0; i<*num_uids; i++) {
+		if ((*uids)[i] == uid) {
+			return true;
+		}
+	}
+
+	*uids = talloc_realloc(mem_ctx, *uids, uid_t, *num_uids+1);
+	if (*uids == NULL) {
+		*num_uids = 0;
+		return false;
+	}
+
+	(*uids)[*num_uids] = uid;
+	*num_uids += 1;
+	return true;
+}