158 lines
4.2 KiB
C
158 lines
4.2 KiB
C
/*-
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* Copyright (c) 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)getmntopts.c 8.3 (Berkeley) 3/29/95";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/uio.h>
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#include <err.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include "mntopts.h"
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int getmnt_silent = 0;
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void
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getmntopts(const char *options, const struct mntopt *m0, int *flagp,
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int *altflagp)
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{
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const struct mntopt *m;
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int negative, len;
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char *opt, *optbuf, *p;
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int *thisflagp;
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/* Copy option string, since it is about to be torn asunder... */
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if ((optbuf = strdup(options)) == NULL)
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err(1, NULL);
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for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
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/* Check for "no" prefix. */
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if (opt[0] == 'n' && opt[1] == 'o') {
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negative = 1;
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opt += 2;
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} else
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negative = 0;
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/*
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* for options with assignments in them (ie. quotas)
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* ignore the assignment as it's handled elsewhere
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*/
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p = strchr(opt, '=');
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if (p != NULL)
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*++p = '\0';
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/* Scan option table. */
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for (m = m0; m->m_option != NULL; ++m) {
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len = strlen(m->m_option);
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if (strncasecmp(opt, m->m_option, len) == 0)
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if (opt[len] == '\0' || opt[len] == '=')
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break;
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}
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/* Save flag, or fail if option is not recognized. */
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if (m->m_option) {
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thisflagp = m->m_altloc ? altflagp : flagp;
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if (negative == m->m_inverse)
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*thisflagp |= m->m_flag;
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else
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*thisflagp &= ~m->m_flag;
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} else if (!getmnt_silent) {
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errx(1, "-o %s: option not supported", opt);
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}
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}
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free(optbuf);
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}
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void
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rmslashes(char *rrpin, char *rrpout)
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{
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char *rrpoutstart;
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*rrpout = *rrpin;
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for (rrpoutstart = rrpout; *rrpin != '\0'; *rrpout++ = *rrpin++) {
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/* skip all double slashes */
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while (*rrpin == '/' && *(rrpin + 1) == '/')
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rrpin++;
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}
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/* remove trailing slash if necessary */
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if (rrpout - rrpoutstart > 1 && *(rrpout - 1) == '/')
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*(rrpout - 1) = '\0';
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else
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*rrpout = '\0';
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}
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void
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checkpath(const char *path, char *resolved)
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{
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struct stat sb;
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if (realpath(path, resolved) != NULL && stat(resolved, &sb) == 0) {
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if (!S_ISDIR(sb.st_mode))
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errx(EX_USAGE, "%s: not a directory", resolved);
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} else
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errx(EX_USAGE, "%s: %s", resolved, strerror(errno));
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}
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void
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build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, int len)
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{
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int i;
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if (*iovlen < 0)
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return;
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i = *iovlen;
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*iov = realloc(*iov, sizeof **iov * (i + 2));
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if (*iov == NULL) {
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*iovlen = -1;
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return;
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}
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(*iov)[i].iov_base = strdup(name);
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(*iov)[i].iov_len = strlen(name) + 1;
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i++;
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(*iov)[i].iov_base = val;
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if (len < 0)
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len = strlen(val) + 1;
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(*iov)[i].iov_len = len;
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*iovlen = ++i;
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}
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