1  /* Implementation of __nss_parse_line_result.
       2     Copyright (C) 2020-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <nss_files.h>
      20  
      21  #include <assert.h>
      22  #include <errno.h>
      23  
      24  int
      25  __nss_parse_line_result (FILE *fp, off64_t offset, int parse_line_result)
      26  {
      27    assert (parse_line_result >= -1 && parse_line_result <= 1);
      28  
      29    switch (__builtin_expect (parse_line_result, 1))
      30      {
      31      case 1:
      32        /* Success.  */
      33        return 0;
      34      case 0:
      35        /* Parse error.  */
      36        __set_errno (EINVAL);
      37        return EINVAL;
      38      case -1:
      39        /* Out of buffer space.  */
      40        return __nss_readline_seek (fp, offset);
      41  
      42        default:
      43          __builtin_unreachable ();
      44      }
      45  }
      46  libc_hidden_def (__nss_parse_line_result)