kc3-lang/gnulib/lib/hasmntopt.c

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• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• lib/hasmntopt.c

• /* hasmntopt() function: test for the presence of a mount option.
  
     Copyright (C) 1995-2025 Free Software Foundation, Inc.
  
     This file is free software: you can redistribute it and/or modify
     it under the terms of the GNU Lesser General Public License as
     published by the Free Software Foundation; either version 2.1 of the
     License, or (at your option) any later version.
  
     This file is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include <mntent.h>
  
  #include <string.h>
  
  char *
  hasmntopt (const struct mntent *mnt, const char *opt)
  {
    const size_t optlen = strlen (opt);
    char *rest = mnt->mnt_opts, *p;
  
    while ((p = strstr (rest, opt)) != NULL)
      {
        if ((p == rest || p[-1] == ',')
            && (p[optlen] == '\0' || p[optlen] == '=' || p[optlen] == ','))
          return p;
  
        rest = strchr (p, ',');
        if (rest == NULL)
          break;
        ++rest;
      }
  
    return NULL;
  }
  

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