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- /*
- * setgroups() 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>
- #ifdef __USE_BSD
- #include <grp.h>
- #if defined(__NR_setgroups32)
- # undef __NR_setgroups
- # define __NR_setgroups __NR_setgroups32
- _syscall2(int, setgroups, size_t, size, const gid_t *, list)
- #elif __WORDSIZE == 64
- _syscall2(int, setgroups, size_t, size, const gid_t *, list)
- #else
- # include <errno.h>
- # include <stdlib.h>
- # include <unistd.h>
- # include <sys/types.h>
- # define __NR___syscall_setgroups __NR_setgroups
- static __always_inline _syscall2(int, __syscall_setgroups,
- size_t, size, const __kernel_gid_t *, list)
- int setgroups(size_t size, const gid_t *groups)
- {
- if (size > (size_t) sysconf(_SC_NGROUPS_MAX)) {
- ret_error:
- __set_errno(EINVAL);
- return -1;
- } else {
- size_t i;
- __kernel_gid_t *kernel_groups = NULL;
- if (size) {
- kernel_groups = (__kernel_gid_t *)malloc(sizeof(*kernel_groups) * size);
- if (kernel_groups == NULL)
- goto ret_error;
- }
- for (i = 0; i < size; i++) {
- kernel_groups[i] = (groups)[i];
- if (groups[i] != (gid_t) ((__kernel_gid_t) groups[i])) {
- goto ret_error;
- }
- }
- i = __syscall_setgroups(size, kernel_groups);
- free(kernel_groups);
- return i;
- }
- }
- #endif
- libc_hidden_def(setgroups)
- #endif
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