1 /* close replacement.
2    Copyright (C) 2008-2014 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
close_nothrow(int fd)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
rpl_close(int fd)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 }
70