zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libc/sysdeps/linux/common/getgroups.c b/ap/build/uClibc/libc/sysdeps/linux/common/getgroups.c
new file mode 100644
index 0000000..ddc2cae
--- /dev/null
+++ b/ap/build/uClibc/libc/sysdeps/linux/common/getgroups.c
@@ -0,0 +1,60 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * getgroups() for uClibc
+ *
+ * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <grp.h>
+
+
+#if defined(__NR_getgroups32)
+# undef __NR_getgroups
+# define __NR_getgroups __NR_getgroups32
+_syscall2(int, getgroups, int, size, gid_t *, list)
+
+#elif __WORDSIZE == 64
+_syscall2(int, getgroups, int, size, gid_t *, list)
+
+#else
+
+#define MIN(a,b) (((a)<(b))?(a):(b))
+
+#define __NR___syscall_getgroups __NR_getgroups
+static __inline__ _syscall2(int, __syscall_getgroups,
+ int, size, __kernel_gid_t *, list)
+
+int getgroups(int size, gid_t groups[])
+{
+ if (unlikely(size < 0)) {
+ret_error:
+ __set_errno(EINVAL);
+ return -1;
+ } else {
+ int i, ngids;
+ __kernel_gid_t *kernel_groups;
+
+ size = MIN(size, sysconf(_SC_NGROUPS_MAX));
+ kernel_groups = (__kernel_gid_t *)malloc(sizeof(*kernel_groups) * size);
+ if (size && kernel_groups == NULL)
+ goto ret_error;
+
+ ngids = __syscall_getgroups(size, kernel_groups);
+ if (size != 0 && ngids > 0) {
+ for (i = 0; i < ngids; i++) {
+ groups[i] = kernel_groups[i];
+ }
+ }
+
+ free(kernel_groups);
+ return ngids;
+ }
+}
+#endif
+
+libc_hidden_def(getgroups)