io/lseek64.c

   1 /* Copyright (C) 1991,95,96,97,98,2000 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <errno.h>
  20 #include <unistd.h>
  21 #include <sys/types.h>
  22
  23 /* Seek to OFFSET on FD, starting from WHENCE.  */
  24 off64_t
  25 __libc_lseek64 (int fd, off64_t offset, int whence)
  26 {
  27   if (fd < 0)
  28     {
  29       __set_errno (EBADF);
  30       return -1;
  31     }
  32   switch (whence)
  33     {
  34     case SEEK_SET:
  35     case SEEK_CUR:
  36     case SEEK_END:
  37       break;
  38     default:
  39       __set_errno (EINVAL);
  40       return -1;
  41     }
  42
  43   __set_errno (ENOSYS);
  44   return -1;
  45 }
  46 weak_alias (__libc_lseek64, __lseek64)
  47 weak_alias (__libc_lseek64, lseek64)
  48 stub_warning (lseek64)
  49 #include <stub-tag.h>