/* $NetBSD: hasmntopt.c,v 1.1.1.3 2015/01/17 16:34:18 christos Exp $ */
/*
* Copyright (c) 1997-2014 Erez Zadok
* Copyright (c) 1990 Jan-Simon Pendry
* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry at Imperial College, London.
*
* Redistribution and use in source and binary forms, with or without
n * modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*
* File: am-utils/libamu/hasmntopt.c
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <am_defs.h>
#include <amu.h>
#ifndef MNTMAXSTR
# define MNTMAXSTR 256
#endif /* not MNTMAXSTR */
/*
* Some systems don't provide these to the user,
* but amd needs them, so...
*
* From: Piete Brooks <
[email protected]>
*/
static char *
nextmntopt(char **p)
{
char *cp = *p;
char *rp;
/*
* Skip past white space
*/
while (*cp && isspace((unsigned char) *cp))
cp++;
/*
* Word starts here
*/
rp = cp;
/*
* Scan to send of string or separator
*/
while (*cp && *cp != ',')
cp++;
/*
* If separator found the overwrite with null char.
*/
if (*cp) {
*cp = '\0';
cp++;
}
/*
* Return value for next call
*/
*p = cp;
return rp;
}
/*
* replacement for hasmntopt if the system does not have it.
*/
char *
amu_hasmntopt(mntent_t *mnt, char *opt)
{
char t[MNTMAXSTR];
char *f;
char *o = t;
size_t l = strlen(opt);
xstrlcpy(t, mnt->mnt_opts, sizeof(t));
while (*(f = nextmntopt(&o)))
if (NSTREQ(opt, f, l))
return f - t + mnt->mnt_opts;
return 0;
}
