[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/posix/group_member.c b/ap/libc/glibc/glibc-2.22/posix/group_member.c
new file mode 100644
index 0000000..032b1ce
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/posix/group_member.c
@@ -0,0 +1,50 @@
+/* `group_member' -- test if process is in a given group.
+ Copyright (C) 1995-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <limits.h>
+
+#ifndef NGROUPS_MAX
+#define NGROUPS_MAX 16 /* First guess. */
+#endif
+
+int
+__group_member (gid)
+ gid_t gid;
+{
+ int n, size;
+ gid_t *groups;
+
+ size = NGROUPS_MAX;
+ do
+ {
+ groups = __alloca (size * sizeof *groups);
+ n = __getgroups (size, groups);
+ size *= 2;
+ }
+ while (n == size / 2);
+
+ while (n-- > 0)
+ if (groups[n] == gid)
+ return 1;
+
+ return 0;
+}
+weak_alias (__group_member, group_member)