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-rw-r--r--lib/util/setgroups.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/lib/util/setgroups.c b/lib/util/setgroups.c
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+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2011-2012, 2014-2016 Todd C. Miller <Todd.Miller@sudo.ws>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * This is an open source non-commercial project. Dear PVS-Studio, please check it.
+ * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <grp.h>
+#include <limits.h>
+
+#include "sudo_compat.h"
+#include "sudo_debug.h"
+#include "sudo_util.h"
+
+int
+sudo_setgroups_v1(int ngids, const GETGROUPS_T *gids)
+{
+ int maxgids, ret;
+ debug_decl(sudo_setgroups, SUDO_DEBUG_UTIL);
+
+ ret = setgroups(ngids, (GETGROUPS_T *)gids);
+ if (ret == -1 && errno == EINVAL) {
+ /* Too many groups, try again with fewer. */
+ maxgids = (int)sysconf(_SC_NGROUPS_MAX);
+ if (maxgids == -1)
+ maxgids = NGROUPS_MAX;
+ if (ngids > maxgids)
+ ret = setgroups(maxgids, (GETGROUPS_T *)gids);
+ }
+ debug_return_int(ret);
+}