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glibc  2.9
mkfifoat.c
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00001 /* Copyright (C) 1991, 1995, 1996, 1997, 2005 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <fcntl.h>
00021 #include <stddef.h>
00022 #include <sys/stat.h>
00023 #include <sys/types.h>
00024 
00025 
00026 /* Create a named pipe (FIFO) named PATH relative to FD with
00027    protections MODE.  */
00028 int
00029 mkfifoat (fd, path, mode)
00030      int fd;
00031      const char *path;
00032      mode_t mode;
00033 {
00034   if (path == NULL)
00035     {
00036       __set_errno (EINVAL);
00037       return -1;
00038     }
00039 
00040   if (fd != AT_FDCWD && path[0] != '/')
00041     {
00042       /* Check FD is associated with a directory.  */
00043       struct stat64 st;
00044       if (__fxstat64 (_STAT_VER, fd, &st) != 0)
00045        return -1;
00046 
00047       if (!S_ISDIR (st.st_mode))
00048        {
00049          __set_errno (ENOTDIR);
00050          return -1;
00051        }
00052     }
00053 
00054   __set_errno (ENOSYS);
00055   return -1;
00056 }
00057 
00058 
00059 stub_warning (mkfifoat)
00060 #include <stub-tag.h>