Commit | Line | Data |
---|---|---|
6ec2e0f5 | 1 | /* fstat() replacement. |
c0c3707f | 2 | Copyright (C) 2011-2019 Free Software Foundation, Inc. |
6ec2e0f5 SDJ |
3 | |
4 | This program is free software: you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 3 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
c0c3707f | 15 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
6ec2e0f5 SDJ |
16 | |
17 | /* If the user's config.h happens to include <sys/stat.h>, let it include only | |
18 | the system's <sys/stat.h> here, so that orig_fstat doesn't recurse to | |
19 | rpl_fstat. */ | |
20 | #define __need_system_sys_stat_h | |
21 | #include <config.h> | |
22 | ||
23 | /* Get the original definition of fstat. It might be defined as a macro. */ | |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
5e8754f9 | 26 | #undef __need_system_sys_stat_h |
7a6dbc2f | 27 | |
c0c3707f CB |
28 | #if defined _WIN32 && ! defined __CYGWIN__ |
29 | # define WINDOWS_NATIVE | |
30 | #endif | |
31 | ||
32 | #if !defined WINDOWS_NATIVE | |
33 | ||
6ec2e0f5 SDJ |
34 | static int |
35 | orig_fstat (int fd, struct stat *buf) | |
36 | { | |
37 | return fstat (fd, buf); | |
38 | } | |
39 | ||
c0c3707f CB |
40 | #endif |
41 | ||
6ec2e0f5 | 42 | /* Specification. */ |
c0c3707f | 43 | #ifdef __osf__ |
6ec2e0f5 SDJ |
44 | /* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc |
45 | eliminates this include because of the preliminary #include <sys/stat.h> | |
46 | above. */ | |
c0c3707f CB |
47 | # include "sys/stat.h" |
48 | #else | |
49 | # include <sys/stat.h> | |
5e8754f9 SDJ |
50 | #endif |
51 | ||
c0c3707f | 52 | #include "stat-time.h" |
5e8754f9 | 53 | |
c0c3707f CB |
54 | #include <errno.h> |
55 | #include <unistd.h> | |
56 | #ifdef WINDOWS_NATIVE | |
57 | # define WIN32_LEAN_AND_MEAN | |
58 | # include <windows.h> | |
59 | # if GNULIB_MSVC_NOTHROW | |
60 | # include "msvc-nothrow.h" | |
61 | # else | |
62 | # include <io.h> | |
63 | # endif | |
64 | # include "stat-w32.h" | |
6ec2e0f5 SDJ |
65 | #endif |
66 | ||
67 | int | |
68 | rpl_fstat (int fd, struct stat *buf) | |
69 | { | |
70 | #if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY | |
71 | /* Handle the case when rpl_open() used a dummy file descriptor to work | |
72 | around an open() that can't normally visit directories. */ | |
73 | const char *name = _gl_directory_name (fd); | |
74 | if (name != NULL) | |
75 | return stat (name, buf); | |
76 | #endif | |
77 | ||
c0c3707f CB |
78 | #ifdef WINDOWS_NATIVE |
79 | /* Fill the fields ourselves, because the original fstat function returns | |
80 | values for st_atime, st_mtime, st_ctime that depend on the current time | |
81 | zone. See | |
82 | <https://lists.gnu.org/r/bug-gnulib/2017-04/msg00134.html> */ | |
83 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
84 | ||
85 | if (h == INVALID_HANDLE_VALUE) | |
86 | { | |
87 | errno = EBADF; | |
88 | return -1; | |
89 | } | |
90 | return _gl_fstat_by_handle (h, NULL, buf); | |
91 | #else | |
92 | return stat_time_normalize (orig_fstat (fd, buf), buf); | |
93 | #endif | |
6ec2e0f5 | 94 | } |