1 /* close replacement. 2 Copyright (C) 2008-2020 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 <https://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 #if HAVE_MSVC_INVALID_PARAMETER_HANDLER 26 # include "msvc-inval.h" 27 #endif 28 29 #undef close 30 31 #if HAVE_MSVC_INVALID_PARAMETER_HANDLER 32 static int close_nothrow(int fd)33close_nothrow (int fd) 34 { 35 int result; 36 37 TRY_MSVC_INVAL 38 { 39 result = close (fd); 40 } 41 CATCH_MSVC_INVAL 42 { 43 result = -1; 44 errno = EBADF; 45 } 46 DONE_MSVC_INVAL; 47 48 return result; 49 } 50 #else 51 # define close_nothrow close 52 #endif 53 54 /* Override close() to call into other gnulib modules. */ 55 56 int rpl_close(int fd)57rpl_close (int fd) 58 { 59 #if WINDOWS_SOCKETS 60 int retval = execute_all_close_hooks (close_nothrow, fd); 61 #else 62 int retval = close_nothrow (fd); 63 #endif 64 65 #if REPLACE_FCHDIR 66 if (retval >= 0) 67 _gl_unregister_fd (fd); 68 #endif 69 70 return retval; 71 } 72