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Hash :
7b089321
Author :
Date :
2025-01-01T09:24:36
maint: run 'make update-copyright'
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/* 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;
}