8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
584 lines
13 KiB
C
584 lines
13 KiB
C
/* $NetBSD: fsck.c,v 1.30 2003/08/07 10:04:15 agc Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1996 Christos Zoulas. All rights reserved.
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* Copyright (c) 1980, 1989, 1993, 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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* 3. 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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* From: @(#)mount.c 8.19 (Berkeley) 4/19/94
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* From: $NetBSD: mount.c,v 1.24 1995/11/18 03:34:29 cgd Exp
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* $NetBSD: fsck.c,v 1.30 2003/08/07 10:04:15 agc Exp $
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*/
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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/mount.h>
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#include <sys/queue.h>
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#include <sys/wait.h>
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#include <sys/disk.h>
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#include <sys/ioctl.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fstab.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "fsutil.h"
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static enum { IN_LIST, NOT_IN_LIST } which = NOT_IN_LIST;
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static TAILQ_HEAD(fstypelist, entry) opthead, selhead;
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struct entry {
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char *type;
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char *options;
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TAILQ_ENTRY(entry) entries;
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};
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static char *options = NULL;
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static int flags = 0;
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static int forceflag = 0;
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static int checkfs(const char *, const char *, const char *, const char *, pid_t *);
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static int selected(const char *);
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static void addoption(char *);
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static const char *getoptions(const char *);
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static void addentry(struct fstypelist *, const char *, const char *);
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static void maketypelist(char *);
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static void catopt(char **, const char *);
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static void mangle(char *, int *, const char ** volatile *, int *);
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static const char *getfstype(const char *);
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static void usage(void) __dead2;
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static int isok(struct fstab *);
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static struct {
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const char *ptype;
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const char *name;
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} ptype_map[] = {
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{ "ufs", "ffs" },
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{ "ffs", "ffs" },
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{ "fat", "msdosfs" },
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{ "efi", "msdosfs" },
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{ NULL, NULL },
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};
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int
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main(int argc, char *argv[])
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{
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struct fstab *fs;
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int i, rval = 0;
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const char *vfstype = NULL;
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char globopt[3];
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const char *etc_fstab;
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globopt[0] = '-';
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globopt[2] = '\0';
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TAILQ_INIT(&selhead);
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TAILQ_INIT(&opthead);
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etc_fstab = NULL;
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while ((i = getopt(argc, argv, "BCdvpfFnyl:t:T:c:")) != -1)
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switch (i) {
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case 'B':
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if (flags & CHECK_BACKGRD)
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errx(1, "Cannot specify -B and -F.");
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flags |= DO_BACKGRD;
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break;
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case 'd':
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flags |= CHECK_DEBUG;
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break;
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case 'v':
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flags |= CHECK_VERBOSE;
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break;
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case 'F':
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if (flags & DO_BACKGRD)
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errx(1, "Cannot specify -B and -F.");
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flags |= CHECK_BACKGRD;
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break;
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case 'p':
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flags |= CHECK_PREEN;
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/*FALLTHROUGH*/
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case 'C':
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flags |= CHECK_CLEAN;
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/*FALLTHROUGH*/
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case 'n':
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case 'y':
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globopt[1] = i;
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catopt(&options, globopt);
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break;
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case 'f':
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forceflag = 1;
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globopt[1] = i;
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catopt(&options, globopt);
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break;
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case 'l':
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warnx("Ignoring obsolete -l option\n");
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break;
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case 'T':
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if (*optarg)
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addoption(optarg);
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break;
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case 't':
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if (!TAILQ_EMPTY(&selhead))
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errx(1, "only one -t option may be specified.");
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maketypelist(optarg);
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vfstype = optarg;
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break;
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case 'c':
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etc_fstab = optarg;
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break;
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case '?':
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default:
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usage();
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/* NOTREACHED */
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}
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argc -= optind;
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argv += optind;
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if (etc_fstab != NULL)
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setfstab(etc_fstab);
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if (argc == 0)
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return checkfstab(flags, isok, checkfs);
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#define BADTYPE(type) \
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(strcmp(type, FSTAB_RO) && \
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strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ))
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for (; argc--; argv++) {
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const char *spec, *mntpt, *type, *cp;
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char device[MAXPATHLEN];
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struct statfs *mntp;
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mntpt = NULL;
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spec = *argv;
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cp = strrchr(spec, '/');
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if (cp == NULL) {
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(void)snprintf(device, sizeof(device), "%s%s",
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_PATH_DEV, spec);
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spec = device;
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}
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mntp = getmntpt(spec);
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if (mntp != NULL) {
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spec = mntp->f_mntfromname;
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mntpt = mntp->f_mntonname;
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}
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if ((fs = getfsfile(spec)) == NULL &&
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(fs = getfsspec(spec)) == NULL) {
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if (vfstype == NULL)
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vfstype = getfstype(spec);
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if (vfstype == NULL)
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vfstype = "ufs";
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type = vfstype;
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devcheck(spec);
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} else {
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spec = fs->fs_spec;
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type = fs->fs_vfstype;
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mntpt = fs->fs_file;
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if (BADTYPE(fs->fs_type))
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errx(1, "%s has unknown file system type.",
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spec);
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}
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if ((flags & CHECK_BACKGRD) &&
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checkfs(type, spec, mntpt, "-F", NULL) == 0) {
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printf("%s: DEFER FOR BACKGROUND CHECKING\n", *argv);
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continue;
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}
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if ((flags & DO_BACKGRD) && forceflag == 0 &&
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checkfs(type, spec, mntpt, "-F", NULL) != 0)
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continue;
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rval |= checkfs(type, spec, mntpt, NULL, NULL);
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}
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return rval;
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}
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static int
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isok(struct fstab *fs)
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{
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int i;
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if (fs->fs_passno == 0)
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return (0);
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if (BADTYPE(fs->fs_type))
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return (0);
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if (!selected(fs->fs_vfstype))
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return (0);
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/*
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* If the -B flag has been given, then process the needed
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* background checks. Background checks cannot be run on
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* file systems that will be mounted read-only or that were
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* not mounted at boot time (typically those marked `noauto').
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* If these basic tests are passed, check with the file system
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* itself to see if it is willing to do background checking
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* by invoking its check program with the -F flag.
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*/
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if (flags & DO_BACKGRD) {
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if (!strcmp(fs->fs_type, FSTAB_RO))
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return (0);
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if (getmntpt(fs->fs_spec) == NULL)
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return (0);
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if (checkfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file, "-F", 0))
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return (0);
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return (1);
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}
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/*
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* If the -F flag has been given, then consider deferring the
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* check to background. Background checks cannot be run on
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* file systems that will be mounted read-only or that will
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* not be mounted at boot time (e.g., marked `noauto'). If
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* these basic tests are passed, check with the file system
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* itself to see if it is willing to defer to background
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* checking by invoking its check program with the -F flag.
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*/
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if ((flags & CHECK_BACKGRD) == 0 || !strcmp(fs->fs_type, FSTAB_RO))
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return (1);
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for (i = strlen(fs->fs_mntops) - 6; i >= 0; i--)
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if (!strncmp(&fs->fs_mntops[i], "noauto", 6))
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break;
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if (i >= 0)
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return (1);
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if (checkfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file, "-F", NULL) != 0)
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return (1);
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printf("%s: DEFER FOR BACKGROUND CHECKING\n", fs->fs_spec);
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return (0);
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}
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static int
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checkfs(const char *pvfstype, const char *spec, const char *mntpt,
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const char *auxopt, pid_t *pidp)
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{
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const char ** volatile argv;
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pid_t pid;
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int argc, i, status, maxargc;
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char *optbuf, execbase[MAXPATHLEN];
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char *vfstype = NULL;
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const char *extra = NULL;
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#ifdef __GNUC__
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/* Avoid vfork clobbering */
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(void) &optbuf;
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(void) &vfstype;
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#endif
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/*
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* We convert the vfstype to lowercase and any spaces to underscores
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* to not confuse the issue
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*
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* XXX This is a kludge to make automatic filesystem type guessing
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* from the disklabel work for "4.2BSD" filesystems. It does a
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* very limited subset of transliteration to a normalised form of
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* filesystem name, and we do not seem to enforce a filesystem
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* name character set.
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*/
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vfstype = strdup(pvfstype);
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if (vfstype == NULL)
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perr("strdup(pvfstype)");
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for (i = 0; i < (int)strlen(vfstype); i++) {
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vfstype[i] = tolower(vfstype[i]);
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if (vfstype[i] == ' ')
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vfstype[i] = '_';
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}
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extra = getoptions(vfstype);
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optbuf = NULL;
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if (options)
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catopt(&optbuf, options);
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if (extra)
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catopt(&optbuf, extra);
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if (auxopt)
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catopt(&optbuf, auxopt);
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else if (flags & DO_BACKGRD)
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catopt(&optbuf, "-B");
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maxargc = 64;
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argv = emalloc(sizeof(char *) * maxargc);
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(void) snprintf(execbase, sizeof(execbase), "fsck_%s", vfstype);
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argc = 0;
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argv[argc++] = execbase;
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if (optbuf)
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mangle(optbuf, &argc, &argv, &maxargc);
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argv[argc++] = spec;
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argv[argc] = NULL;
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if (flags & (CHECK_DEBUG|CHECK_VERBOSE)) {
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(void)printf("start %s %swait", mntpt,
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pidp ? "no" : "");
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for (i = 0; i < argc; i++)
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(void)printf(" %s", argv[i]);
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(void)printf("\n");
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}
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switch (pid = vfork()) {
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case -1: /* Error. */
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warn("vfork");
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if (optbuf)
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free(optbuf);
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free(vfstype);
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return (1);
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case 0: /* Child. */
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if ((flags & CHECK_DEBUG) && auxopt == NULL)
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_exit(0);
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/* Go find an executable. */
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execvP(execbase, _PATH_SYSPATH, __DECONST(char * const *, argv));
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if (spec)
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warn("exec %s for %s in %s", execbase, spec, _PATH_SYSPATH);
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else
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warn("exec %s in %s", execbase, _PATH_SYSPATH);
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_exit(1);
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/* NOTREACHED */
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default: /* Parent. */
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if (optbuf)
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free(optbuf);
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free(vfstype);
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if (pidp) {
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*pidp = pid;
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return 0;
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}
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if (waitpid(pid, &status, 0) < 0) {
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warn("waitpid");
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return (1);
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}
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if (WIFEXITED(status)) {
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if (WEXITSTATUS(status) != 0)
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return (WEXITSTATUS(status));
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}
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else if (WIFSIGNALED(status)) {
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warnx("%s: %s", spec, strsignal(WTERMSIG(status)));
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return (1);
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}
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break;
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}
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return (0);
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}
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static int
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selected(const char *type)
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{
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struct entry *e;
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/* If no type specified, it's always selected. */
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TAILQ_FOREACH(e, &selhead, entries)
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if (!strncmp(e->type, type, MFSNAMELEN))
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return which == IN_LIST ? 1 : 0;
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return which == IN_LIST ? 0 : 1;
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}
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static const char *
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getoptions(const char *type)
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{
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struct entry *e;
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TAILQ_FOREACH(e, &opthead, entries)
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if (!strncmp(e->type, type, MFSNAMELEN))
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return e->options;
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return "";
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}
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static void
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addoption(char *optstr)
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{
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char *newoptions;
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struct entry *e;
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if ((newoptions = strchr(optstr, ':')) == NULL)
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errx(1, "Invalid option string");
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*newoptions++ = '\0';
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TAILQ_FOREACH(e, &opthead, entries)
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if (!strncmp(e->type, optstr, MFSNAMELEN)) {
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catopt(&e->options, newoptions);
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return;
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}
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addentry(&opthead, optstr, newoptions);
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}
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static void
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addentry(struct fstypelist *list, const char *type, const char *opts)
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{
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struct entry *e;
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e = emalloc(sizeof(struct entry));
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e->type = estrdup(type);
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e->options = estrdup(opts);
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TAILQ_INSERT_TAIL(list, e, entries);
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}
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static void
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maketypelist(char *fslist)
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{
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char *ptr;
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if ((fslist == NULL) || (fslist[0] == '\0'))
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errx(1, "empty type list");
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if (fslist[0] == 'n' && fslist[1] == 'o') {
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fslist += 2;
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which = NOT_IN_LIST;
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}
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else
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which = IN_LIST;
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while ((ptr = strsep(&fslist, ",")) != NULL)
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addentry(&selhead, ptr, "");
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}
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static void
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catopt(char **sp, const char *o)
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{
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char *s;
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size_t i, j;
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s = *sp;
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if (s) {
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i = strlen(s);
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j = i + 1 + strlen(o) + 1;
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s = erealloc(s, j);
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(void)snprintf(s + i, j, ",%s", o);
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} else
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s = estrdup(o);
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*sp = s;
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}
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static void
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mangle(char *opts, int *argcp, const char ** volatile *argvp, int *maxargcp)
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{
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char *p, *s;
|
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int argc, maxargc;
|
|
const char **argv;
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argc = *argcp;
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|
argv = *argvp;
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maxargc = *maxargcp;
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for (s = opts; (p = strsep(&s, ",")) != NULL;) {
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/* Always leave space for one more argument and the NULL. */
|
|
if (argc >= maxargc - 3) {
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|
maxargc <<= 1;
|
|
argv = erealloc(argv, maxargc * sizeof(char *));
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|
}
|
|
if (*p != '\0') {
|
|
if (*p == '-') {
|
|
argv[argc++] = p;
|
|
p = strchr(p, '=');
|
|
if (p) {
|
|
*p = '\0';
|
|
argv[argc++] = p+1;
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|
}
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|
} else {
|
|
argv[argc++] = "-o";
|
|
argv[argc++] = p;
|
|
}
|
|
}
|
|
}
|
|
|
|
*argcp = argc;
|
|
*argvp = argv;
|
|
*maxargcp = maxargc;
|
|
}
|
|
|
|
static const char *
|
|
getfstype(const char *str)
|
|
{
|
|
struct diocgattr_arg attr;
|
|
int fd, i;
|
|
|
|
if ((fd = open(str, O_RDONLY)) == -1)
|
|
err(1, "cannot open `%s'", str);
|
|
|
|
strncpy(attr.name, "PART::type", sizeof(attr.name));
|
|
memset(&attr.value, 0, sizeof(attr.value));
|
|
attr.len = sizeof(attr.value);
|
|
if (ioctl(fd, DIOCGATTR, &attr) == -1) {
|
|
(void) close(fd);
|
|
return(NULL);
|
|
}
|
|
(void) close(fd);
|
|
for (i = 0; ptype_map[i].ptype != NULL; i++)
|
|
if (strstr(attr.value.str, ptype_map[i].ptype) != NULL)
|
|
return (ptype_map[i].name);
|
|
return (NULL);
|
|
}
|
|
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
static const char common[] =
|
|
"[-Cdfnpvy] [-B | -F] [-T fstype:fsoptions] [-t fstype] [-c fstab]";
|
|
|
|
(void)fprintf(stderr, "usage: %s %s [special | node] ...\n",
|
|
getprogname(), common);
|
|
exit(1);
|
|
}
|