1 /*
2 * lstat() for uClibc
3 *
4 * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
5 *
6 * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
7 */
8
9 #include <sys/syscall.h>
10 #include <unistd.h>
11 #include <sys/stat.h>
12 #include <bits/uClibc_arch_features.h>
13
14 #if defined __NR_fstatat64 && !defined __NR_lstat && !defined(__UCLIBC_USE_TIME64__)
15 # include <fcntl.h>
16
lstat(const char * file_name,struct stat * buf)17 int lstat(const char *file_name, struct stat *buf)
18 {
19 return fstatat(AT_FDCWD, file_name, buf, AT_SYMLINK_NOFOLLOW);
20 }
21 libc_hidden_def(lstat)
22
23 #elif __WORDSIZE == 64 && defined __NR_newfstatat
24 # include <fcntl.h>
25
26 int lstat(const char *file_name, struct stat *buf)
27 {
28 return fstatat(AT_FDCWD, file_name, buf, AT_SYMLINK_NOFOLLOW);
29 }
30 libc_hidden_def(lstat)
31
32 #elif defined __NR_statx && defined __UCLIBC_HAVE_STATX__
33 # include <fcntl.h>
34 # include <statx_cp.h>
35
36 int lstat(const char *file_name, struct stat *buf)
37 {
38 struct statx tmp;
39 int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, file_name,
40 AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW,
41 STATX_BASIC_STATS, &tmp);
42 if (rc == 0)
43 __cp_stat_statx ((struct stat *)buf, &tmp);
44
45 return rc;
46 }
47 libc_hidden_def(lstat)
48
49 /* For systems which have both, prefer the old one */
50 #else
51 # include "xstatconv.h"
52 int lstat(const char *file_name, struct stat *buf)
53 {
54 int result;
55 # ifdef __NR_lstat64
56 /* normal stat call has limited values for various stat elements
57 * e.g. uid device major/minor etc.
58 * so we use 64 variant if available
59 * in order to get newer versions of stat elements
60 */
61 struct kernel_stat64 kbuf;
62 result = INLINE_SYSCALL(lstat64, 2, file_name, &kbuf);
63 if (result == 0) {
64 __xstat32_conv(&kbuf, buf);
65 }
66 # else
67 struct kernel_stat kbuf;
68
69 result = INLINE_SYSCALL(lstat, 2, file_name, &kbuf);
70 if (result == 0) {
71 __xstat_conv(&kbuf, buf);
72 }
73 # endif /* __NR_lstat64 */
74 return result;
75 }
76 libc_hidden_def(lstat)
77
78 # if ! defined __NR_fstatat64 && ! defined __NR_lstat64 && ! defined __UCLIBC_HAS_STATX__
79 strong_alias_untyped(lstat,lstat64)
80 libc_hidden_def(lstat64)
81 # endif
82
83 #endif /* __NR_fstatat64 */
84