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/* vi: set sw=4 ts=4: */
/*
* getgroups() for uClibc
*
* Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
*/
#define sysconf __sysconf
#include "syscalls.h"
#include <stdlib.h>
#include <unistd.h>
#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 attribute_hidden __getgroups(int n, gid_t * groups)
{
if (unlikely(n < 0)) {
ret_error:
__set_errno(EINVAL);
return -1;
} else {
int i, ngids;
__kernel_gid_t *kernel_groups;
n = MIN(n, sysconf(_SC_NGROUPS_MAX));
kernel_groups = (__kernel_gid_t *)malloc(sizeof(*kernel_groups) * n);
if (kernel_groups == NULL)
goto ret_error;
ngids = __syscall_getgroups(n, kernel_groups);
if (n != 0 && ngids > 0) {
for (i = 0; i < ngids; i++) {
groups[i] = kernel_groups[i];
}
}
free(kernel_groups);
return ngids;
}
}
strong_alias(__getgroups,getgroups)
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