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
|
/* vi: set sw=4 ts=4: */
/*
* lchown() 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 <unistd.h>
#include <bits/wordsize.h>
#if defined __NR_fchownat && !defined __NR_lchown
# include <fcntl.h>
int lchown(const char *path, uid_t owner, gid_t group)
{
return fchownat(AT_FDCWD, path, owner, group, AT_SYMLINK_NOFOLLOW);
}
#else
# if (__WORDSIZE == 32 && defined(__NR_lchown32)) || __WORDSIZE == 64
# ifdef __NR_lchown32
# undef __NR_lchown
# define __NR_lchown __NR_lchown32
# endif
_syscall3(int, lchown, const char *, path, uid_t, owner, gid_t, group)
# else
# define __NR___syscall_lchown __NR_lchown
static __inline__ _syscall3(int, __syscall_lchown, const char *, path,
__kernel_uid_t, owner, __kernel_gid_t, group)
int lchown(const char *path, uid_t owner, gid_t group)
{
if (((owner + 1) > (uid_t) ((__kernel_uid_t) - 1U))
|| ((group + 1) > (gid_t) ((__kernel_gid_t) - 1U))) {
__set_errno(EINVAL);
return -1;
}
return __syscall_lchown(path, owner, group);
}
# endif
#endif
|
