514 lines
11 KiB
C
514 lines
11 KiB
C
/* $NetBSD: fsck.c,v 1.18 1998/07/26 20:02:36 mycroft Exp $ */
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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* 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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*
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: fsck.c,v 1.18 1998/07/26 20:02:36 mycroft Exp $");
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#endif /* not lint */
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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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#define DKTYPENAMES
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#include <sys/disklabel.h>
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#include <sys/ioctl.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 <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 "pathnames.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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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 int maxrun = 0;
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static char *options = NULL;
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static int flags = 0;
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int main __P((int, char *[]));
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static int checkfs __P((const char *, const char *, const char *, void *,
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pid_t *));
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static int selected __P((const char *));
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static void addoption __P((char *));
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static const char *getoptions __P((const char *));
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static void addentry __P((struct fstypelist *, const char *, const char *));
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static void maketypelist __P((char *));
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static void catopt __P((char **, const char *));
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static void mangle __P((char *, int *, const char ***, int *));
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static const char *getfslab __P((const char *));
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static void usage __P((void));
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static void *isok __P((struct fstab *));
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int
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main(argc, argv)
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int argc;
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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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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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while ((i = getopt(argc, argv, "dvpfnyl:t:T:")) != -1)
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switch (i) {
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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 'p':
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flags |= CHECK_PREEN;
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/*FALLTHROUGH*/
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case 'n':
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case 'f':
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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 'l':
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maxrun = atoi(optarg);
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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 (selhead.tqh_first != NULL)
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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 '?':
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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 (argc == 0)
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return checkfstab(flags, maxrun, 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, *type;
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if ((fs = getfsfile(*argv)) == NULL &&
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(fs = getfsspec(*argv)) == NULL) {
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if (vfstype == NULL)
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vfstype = getfslab(*argv);
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spec = *argv;
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type = vfstype;
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}
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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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if (BADTYPE(fs->fs_type))
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errx(1, "%s has unknown file system type.",
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*argv);
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}
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rval |= checkfs(type, blockcheck(spec), *argv, NULL, NULL);
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}
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return rval;
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}
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static void *
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isok(fs)
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struct fstab *fs;
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{
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if (fs->fs_passno == 0)
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return NULL;
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if (BADTYPE(fs->fs_type))
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return NULL;
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if (!selected(fs->fs_vfstype))
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return NULL;
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return fs;
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}
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static int
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checkfs(vfstype, spec, mntpt, auxarg, pidp)
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const char *vfstype, *spec, *mntpt;
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void *auxarg;
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pid_t *pidp;
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{
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/* List of directories containing fsck_xxx subcommands. */
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static const char *edirs[] = {
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_PATH_SBIN,
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_PATH_USRSBIN,
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NULL
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};
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const char **argv, **edir;
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pid_t pid;
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int argc, i, status, maxargc;
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char *optbuf, execname[MAXPATHLEN + 1], execbase[MAXPATHLEN];
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const char *extra = getoptions(vfstype);
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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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if (!strcmp(vfstype, "ufs"))
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vfstype = MOUNT_UFS;
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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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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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return (1);
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case 0: /* Child. */
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if (flags & CHECK_DEBUG)
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_exit(0);
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/* Go find an executable. */
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edir = edirs;
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do {
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(void)snprintf(execname,
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sizeof(execname), "%s/%s", *edir, execbase);
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execv(execname, (char * const *)argv);
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if (errno != ENOENT)
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if (spec)
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warn("exec %s for %s", execname, spec);
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else
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warn("exec %s", execname);
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} while (*++edir != NULL);
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if (errno == ENOENT)
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if (spec)
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warn("exec %s for %s", execname, spec);
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else
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warn("exec %s", execname);
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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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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(type)
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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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for (e = selhead.tqh_first; e != NULL; e = e->entries.tqe_next)
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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(type)
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const char *type;
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{
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struct entry *e;
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for (e = opthead.tqh_first; e != NULL; e = e->entries.tqe_next)
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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(optstr)
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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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for (e = opthead.tqh_first; e != NULL; e = e->entries.tqe_next)
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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(list, type, opts)
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struct fstypelist *list;
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const char *type;
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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(fslist)
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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(sp, o)
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char **sp;
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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(options, argcp, argvp, maxargcp)
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char *options;
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int *argcp, *maxargcp;
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const char ***argvp;
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{
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char *p, *s;
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int argc, maxargc;
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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 = options; (p = strsep(&s, ",")) != NULL;) {
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/* Always leave space for one more argument and the NULL. */
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if (argc >= maxargc - 3) {
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maxargc <<= 1;
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argv = erealloc(argv, maxargc * sizeof(char *));
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}
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if (*p != '\0')
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if (*p == '-') {
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argv[argc++] = p;
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p = strchr(p, '=');
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if (p) {
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*p = '\0';
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argv[argc++] = p+1;
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}
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} else {
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argv[argc++] = "-o";
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argv[argc++] = p;
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}
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}
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*argcp = argc;
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*argvp = argv;
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*maxargcp = maxargc;
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}
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const static char *
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getfslab(str)
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const char *str;
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{
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struct disklabel dl;
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int fd;
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char p;
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const char *vfstype;
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u_char t;
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/* deduce the filesystem type from the disk label */
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if ((fd = open(str, O_RDONLY)) == -1)
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err(1, "cannot open `%s'", str);
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if (ioctl(fd, DIOCGDINFO, &dl) == -1)
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err(1, "cannot get disklabel for `%s'", str);
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(void) close(fd);
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p = str[strlen(str) - 1];
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if ((p - 'a') >= dl.d_npartitions)
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errx(1, "partition `%s' is not defined on disk", str);
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if ((t = dl.d_partitions[p - 'a'].p_fstype) >= FSMAXTYPES)
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errx(1, "partition `%s' is not of a legal vfstype",
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str);
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if ((vfstype = fscknames[t]) == NULL)
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errx(1, "vfstype `%s' on partition `%s' is not supported",
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fstypenames[t], str);
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return vfstype;
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}
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static void
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usage()
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{
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extern char *__progname;
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static const char common[] =
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"[-dpvlyn] [-T fstype:fsoptions] [-t fstype]";
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(void)fprintf(stderr, "Usage: %s %s [special|node]...\n",
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__progname, common);
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exit(1);
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}
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