/* $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 #endif /* HAVE_CONFIG_H */ #include #include #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 */ 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; }