Commit | Line | Data |
---|---|---|
6ec2e0f5 | 1 | /* fstat() replacement. |
5e8754f9 | 2 | Copyright (C) 2011-2016 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 | |
5e8754f9 | 15 | along with this program. If not, see <http://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 SDJ |
26 | #if _GL_WINDOWS_64_BIT_ST_SIZE |
27 | # undef stat /* avoid warning on mingw64 with _FILE_OFFSET_BITS=64 */ | |
28 | # define stat _stati64 | |
29 | # undef fstat /* avoid warning on mingw64 with _FILE_OFFSET_BITS=64 */ | |
30 | # define fstat _fstati64 | |
7a6dbc2f | 31 | #endif |
5e8754f9 | 32 | #undef __need_system_sys_stat_h |
7a6dbc2f | 33 | |
6ec2e0f5 SDJ |
34 | static int |
35 | orig_fstat (int fd, struct stat *buf) | |
36 | { | |
37 | return fstat (fd, buf); | |
38 | } | |
39 | ||
40 | /* Specification. */ | |
41 | /* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc | |
42 | eliminates this include because of the preliminary #include <sys/stat.h> | |
43 | above. */ | |
44 | #include "sys/stat.h" | |
45 | ||
46 | #include <errno.h> | |
47 | #include <unistd.h> | |
5e8754f9 SDJ |
48 | |
49 | #if HAVE_MSVC_INVALID_PARAMETER_HANDLER | |
50 | # include "msvc-inval.h" | |
51 | #endif | |
52 | ||
53 | #if HAVE_MSVC_INVALID_PARAMETER_HANDLER | |
54 | static int | |
55 | fstat_nothrow (int fd, struct stat *buf) | |
56 | { | |
57 | int result; | |
58 | ||
59 | TRY_MSVC_INVAL | |
60 | { | |
61 | result = orig_fstat (fd, buf); | |
62 | } | |
63 | CATCH_MSVC_INVAL | |
64 | { | |
65 | result = -1; | |
66 | errno = EBADF; | |
67 | } | |
68 | DONE_MSVC_INVAL; | |
69 | ||
70 | return result; | |
71 | } | |
72 | #else | |
73 | # define fstat_nothrow orig_fstat | |
6ec2e0f5 SDJ |
74 | #endif |
75 | ||
76 | int | |
77 | rpl_fstat (int fd, struct stat *buf) | |
78 | { | |
79 | #if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY | |
80 | /* Handle the case when rpl_open() used a dummy file descriptor to work | |
81 | around an open() that can't normally visit directories. */ | |
82 | const char *name = _gl_directory_name (fd); | |
83 | if (name != NULL) | |
84 | return stat (name, buf); | |
85 | #endif | |
86 | ||
5e8754f9 | 87 | return fstat_nothrow (fd, buf); |
6ec2e0f5 | 88 | } |