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glibc  2.9
unlinkat.c
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00001 /* unlinkat -- Remove a name relative to an open directory.  Hurd version.
00002    Copyright (C) 2006 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <errno.h>
00021 #include <fcntl.h>
00022 #include <stddef.h>
00023 #include <unistd.h>
00024 #include <hurd.h>
00025 #include <hurd/fd.h>
00026 
00027 
00028 /* Remove the link named NAME.  */
00029 int
00030 unlinkat (fd, name, flag)
00031      int fd;
00032      const char *name;
00033      int flag;
00034 {
00035   error_t err;
00036   file_t dir;
00037   const char *file;
00038 
00039   if ((flag &~ AT_REMOVEDIR) != 0)
00040     {
00041       __set_errno (EINVAL);
00042       return -1;
00043     }
00044 
00045   dir = __directory_name_split_at (fd, name, (char **) &file);
00046   if (dir == MACH_PORT_NULL)
00047     return -1;
00048 
00049   err = ((flag & AT_REMOVEDIR) ? __dir_rmdir : __dir_unlink) (dir, file);
00050   __mach_port_deallocate (__mach_task_self (), dir);
00051 
00052   if (err)
00053     return __hurd_fail (err);
00054   return 0;
00055 }