1 /* Create a named fifo. 2 Copyright (C) 2009-2021 Free Software Foundation, Inc. 3 4 This file is free software: you can redistribute it and/or modify 5 it under the terms of the GNU Lesser General Public License as 6 published by the Free Software Foundation; either version 3 of the 7 License, or (at your option) any later version. 8 9 This file 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 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 /* written by Eric Blake */ 18 19 #include <config.h> 20 21 #include <sys/stat.h> 22 23 #include <errno.h> 24 #include <string.h> 25 26 #if !HAVE_MKFIFO 27 /* Mingw lacks mkfifo; always fail with ENOSYS. */ 28 29 int 30 mkfifo (_GL_UNUSED char const *name, _GL_UNUSED mode_t mode) /* */ 31 { 32 errno = ENOSYS; 33 return -1; 34 } 35 36 #else /* HAVE_MKFIFO */ 37 38 # undef mkfifo 39 40 /* Create a named fifo FILE, with access permissions in MODE. Work 41 around trailing slash bugs. */ 42 43 int 44 rpl_mkfifo (char const *name, mode_t mode) /* */ 45 { 46 # if MKFIFO_TRAILING_SLASH_BUG 47 size_t len = strlen (name); 48 if (len && name[len - 1] == '/') 49 { 50 struct stat st; 51 if (stat (name, &st) == 0 || errno == EOVERFLOW) 52 errno = EEXIST; 53 return -1; 54 } 55 # endif 56 return mkfifo (name, mode); 57 } 58 #endif /* HAVE_MKFIFO */