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6ec2e0f5 SDJ |
1 | /* close replacement. |
2 | Copyright (C) 2008-2016 Free Software Foundation, Inc. | |
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 | |
15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
16 | ||
17 | #include <config.h> | |
18 | ||
19 | /* Specification. */ | |
20 | #include <unistd.h> | |
21 | ||
22 | #include <errno.h> | |
23 | ||
24 | #include "fd-hook.h" | |
25 | #include "msvc-inval.h" | |
26 | ||
27 | #undef close | |
28 | ||
29 | #if HAVE_MSVC_INVALID_PARAMETER_HANDLER | |
30 | static int | |
31 | close_nothrow (int fd) | |
32 | { | |
33 | int result; | |
34 | ||
35 | TRY_MSVC_INVAL | |
36 | { | |
37 | result = close (fd); | |
38 | } | |
39 | CATCH_MSVC_INVAL | |
40 | { | |
41 | result = -1; | |
42 | errno = EBADF; | |
43 | } | |
44 | DONE_MSVC_INVAL; | |
45 | ||
46 | return result; | |
47 | } | |
48 | #else | |
49 | # define close_nothrow close | |
50 | #endif | |
51 | ||
52 | /* Override close() to call into other gnulib modules. */ | |
53 | ||
54 | int | |
55 | rpl_close (int fd) | |
56 | { | |
57 | #if WINDOWS_SOCKETS | |
58 | int retval = execute_all_close_hooks (close_nothrow, fd); | |
59 | #else | |
60 | int retval = close_nothrow (fd); | |
61 | #endif | |
62 | ||
63 | #if REPLACE_FCHDIR | |
64 | if (retval >= 0) | |
65 | _gl_unregister_fd (fd); | |
66 | #endif | |
67 | ||
68 | return retval; | |
69 | } |