1 /* Copyright (C) 1991-2022 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library 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 GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #include <errno.h> 19 #include <fcntl.h> 20 #include <stddef.h> 21 #include <sys/stat.h> 22 #include <sys/types.h> 23 24 25 /* Create a named pipe (FIFO) named PATH relative to FD with 26 protections MODE. */ 27 int mkfifoat(int fd,const char * path,mode_t mode)28mkfifoat (int fd, const char *path, mode_t mode) 29 { 30 if (path == NULL) 31 { 32 __set_errno (EINVAL); 33 return -1; 34 } 35 36 if (fd != AT_FDCWD && path[0] != '/') 37 { 38 /* Check FD is associated with a directory. */ 39 struct stat64 st; 40 if (__fstat64 (fd, &st) != 0) 41 return -1; 42 43 if (!S_ISDIR (st.st_mode)) 44 { 45 __set_errno (ENOTDIR); 46 return -1; 47 } 48 } 49 50 __set_errno (ENOSYS); 51 return -1; 52 } 53 54 55 stub_warning (mkfifoat) 56