1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/* vi: set sw=4 ts=4: */
/*
* 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
|
