1  /* Copyright (C) 1991-2023 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 <unistd.h>
      19  #include <sys/types.h>
      20  #include <errno.h>
      21  #include <hurd.h>
      22  
      23  /* Seek to OFFSET on FD, starting from WHENCE.  */
      24  off_t
      25  __libc_lseek (int fd, off_t offset, int whence)
      26  {
      27    off64_t res64 = __libc_lseek64 (fd, (off64_t) offset, whence);
      28    off_t res = (off_t) res64;
      29  
      30    if (sizeof res != sizeof res64 && res != res64)
      31      return (off_t) __hurd_fail (EOVERFLOW);
      32  
      33    return res;
      34  }
      35  
      36  weak_alias (__libc_lseek, __lseek)
      37  libc_hidden_def (__lseek)
      38  weak_alias (__libc_lseek, lseek)