1 /* close replacement. 2 Copyright (C) 2008-2012 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