diff options
Diffstat (limited to 'sbin/mount/getmntopts.c')
-rw-r--r-- | sbin/mount/getmntopts.c | 307 |
1 files changed, 0 insertions, 307 deletions
diff --git a/sbin/mount/getmntopts.c b/sbin/mount/getmntopts.c deleted file mode 100644 index 31987f7b0b78..000000000000 --- a/sbin/mount/getmntopts.c +++ /dev/null @@ -1,307 +0,0 @@ -/*- - * SPDX-License-Identifier: BSD-3-Clause - * - * Copyright (c) 1994 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * 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. - */ - -#if 0 -#ifndef lint -static char sccsid[] = "@(#)getmntopts.c 8.3 (Berkeley) 3/29/95"; -#endif /* not lint */ -#endif -#include <sys/cdefs.h> -#include <sys/param.h> -#include <sys/mount.h> -#include <sys/stat.h> -#include <sys/uio.h> - -#include <err.h> -#include <errno.h> -#include <paths.h> -#include <stdarg.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "mntopts.h" - -int getmnt_silent = 0; - -void -getmntopts(const char *options, const struct mntopt *m0, int *flagp, - int *altflagp) -{ - const struct mntopt *m; - int negative, len; - char *opt, *optbuf, *p; - int *thisflagp; - - /* Copy option string, since it is about to be torn asunder... */ - if ((optbuf = strdup(options)) == NULL) - err(1, NULL); - - for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { - /* Check for "no" prefix. */ - if (opt[0] == 'n' && opt[1] == 'o') { - negative = 1; - opt += 2; - } else - negative = 0; - - /* - * for options with assignments in them (ie. quotas) - * ignore the assignment as it's handled elsewhere - */ - p = strchr(opt, '='); - if (p != NULL) - *++p = '\0'; - - /* Scan option table. */ - for (m = m0; m->m_option != NULL; ++m) { - len = strlen(m->m_option); - if (strncasecmp(opt, m->m_option, len) == 0) - if (opt[len] == '\0' || opt[len] == '=') - break; - } - - /* Save flag, or fail if option is not recognized. */ - if (m->m_option) { - thisflagp = m->m_altloc ? altflagp : flagp; - if (negative == m->m_inverse) - *thisflagp |= m->m_flag; - else - *thisflagp &= ~m->m_flag; - } else if (!getmnt_silent) { - errx(1, "-o %s: option not supported", opt); - } - } - - free(optbuf); -} - -void -rmslashes(char *rrpin, char *rrpout) -{ - char *rrpoutstart; - - *rrpout = *rrpin; - for (rrpoutstart = rrpout; *rrpin != '\0'; *rrpout++ = *rrpin++) { - - /* skip all double slashes */ - while (*rrpin == '/' && *(rrpin + 1) == '/') - rrpin++; - } - - /* remove trailing slash if necessary */ - if (rrpout - rrpoutstart > 1 && *(rrpout - 1) == '/') - *(rrpout - 1) = '\0'; - else - *rrpout = '\0'; -} - -int -checkpath(const char *path, char *resolved) -{ - struct stat sb; - - if (realpath(path, resolved) == NULL || stat(resolved, &sb) != 0) - return (1); - if (!S_ISDIR(sb.st_mode)) { - errno = ENOTDIR; - return (1); - } - return (0); -} - -int -checkpath_allow_file(const char *path, char *resolved) -{ - struct stat sb; - - if (realpath(path, resolved) == NULL || stat(resolved, &sb) != 0) - return (1); - if (!S_ISDIR(sb.st_mode) && !S_ISREG(sb.st_mode)) { - errno = ENOTDIR; - return (1); - } - return (0); -} - -/* - * Get the mount point information for name. Name may be mount point name - * or device name (with or without /dev/ preprended). - */ -struct statfs * -getmntpoint(const char *name) -{ - struct stat devstat, mntdevstat; - char device[sizeof(_PATH_DEV) - 1 + MNAMELEN]; - char *ddevname; - struct statfs *mntbuf, *statfsp; - int i, mntsize, isdev; - u_long len; - - if (stat(name, &devstat) != 0) - return (NULL); - if (S_ISCHR(devstat.st_mode) || S_ISBLK(devstat.st_mode)) - isdev = 1; - else - isdev = 0; - mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); - for (i = 0; i < mntsize; i++) { - statfsp = &mntbuf[i]; - if (isdev == 0) { - if (strcmp(name, statfsp->f_mntonname)) - continue; - return (statfsp); - } - ddevname = statfsp->f_mntfromname; - if (*ddevname != '/') { - if ((len = strlen(_PATH_DEV) + strlen(ddevname) + 1) > - sizeof(statfsp->f_mntfromname) || - len > sizeof(device)) - continue; - strncpy(device, _PATH_DEV, len); - strncat(device, ddevname, len); - if (stat(device, &mntdevstat) == 0) - strncpy(statfsp->f_mntfromname, device, len); - } - if (stat(ddevname, &mntdevstat) == 0 && - mntdevstat.st_rdev == devstat.st_rdev) - return (statfsp); - } - return (NULL); -} - -/* - * If possible reload a mounted filesystem. - * When prtmsg != NULL print a warning if a reload is attempted, but fails. - * Return 0 on success, 1 on failure. - */ -int -chkdoreload(struct statfs *mntp, - void (*prtmsg)(const char *, ...) __printflike(1,2)) -{ - struct iovec *iov; - int iovlen, error; - char errmsg[255]; - - /* - * If the filesystem is not mounted it does not need to be reloaded. - * If it is mounted for writing, then it could not have been opened - * for writing by a utility, so does not need to be reloaded. - */ - if (mntp == NULL || (mntp->f_flags & MNT_RDONLY) == 0) - return (0); - - /* - * We modified a mounted file system. Do a mount update on - * it so we can continue using it as safely as possible. - */ - iov = NULL; - iovlen = 0; - errmsg[0] = '\0'; - build_iovec(&iov, &iovlen, "fstype", __DECONST(void *, "ffs"), 4); - build_iovec(&iov, &iovlen, "from", mntp->f_mntfromname, (size_t)-1); - build_iovec(&iov, &iovlen, "fspath", mntp->f_mntonname, (size_t)-1); - build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); - build_iovec(&iov, &iovlen, "update", NULL, 0); - build_iovec(&iov, &iovlen, "reload", NULL, 0); - /* - * XX: We need the following line until we clean up - * nmount parsing of root mounts and NFS root mounts. - */ - build_iovec(&iov, &iovlen, "ro", NULL, 0); - error = nmount(iov, iovlen, mntp->f_flags); - free_iovec(&iov, &iovlen); - if (error == 0) - return (0); - if (prtmsg != NULL) - prtmsg("mount reload of '%s' failed: %s %s\n\n", - mntp->f_mntonname, strerror(errno), errmsg); - return (1); -} - -void -build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, - size_t len) -{ - int i; - - if (*iovlen < 0) - return; - i = *iovlen; - *iov = realloc(*iov, sizeof **iov * (i + 2)); - if (*iov == NULL) { - *iovlen = -1; - return; - } - (*iov)[i].iov_base = strdup(name); - (*iov)[i].iov_len = strlen(name) + 1; - i++; - (*iov)[i].iov_base = val; - if (len == (size_t)-1) { - if (val != NULL) - len = strlen(val) + 1; - else - len = 0; - } - (*iov)[i].iov_len = (int)len; - *iovlen = ++i; -} - -/* - * This function is needed for compatibility with parameters - * which used to use the mount_argf() command for the old mount() syscall. - */ -void -build_iovec_argf(struct iovec **iov, int *iovlen, const char *name, - const char *fmt, ...) -{ - va_list ap; - char val[255] = { 0 }; - - va_start(ap, fmt); - vsnprintf(val, sizeof(val), fmt, ap); - va_end(ap); - build_iovec(iov, iovlen, name, strdup(val), (size_t)-1); -} - -/* - * Free the iovec and reset to NULL with zero length. Useful for calling - * nmount in a loop. - */ -void -free_iovec(struct iovec **iov, int *iovlen) -{ - int i; - - for (i = 0; i < *iovlen; i += 2) - free((*iov)[i].iov_base); - free(*iov); -} |