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-rw-r--r--e2fsprogs/fsck.c1392
1 files changed, 0 insertions, 1392 deletions
diff --git a/e2fsprogs/fsck.c b/e2fsprogs/fsck.c
deleted file mode 100644
index da66250..0000000
--- a/e2fsprogs/fsck.c
+++ /dev/null
@@ -1,1392 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * pfsck --- A generic, parallelizing front-end for the fsck program.
- * It will automatically try to run fsck programs in parallel if the
- * devices are on separate spindles. It is based on the same ideas as
- * the generic front end for fsck by David Engel and Fred van Kempen,
- * but it has been completely rewritten from scratch to support
- * parallel execution.
- *
- * Written by Theodore Ts'o, <tytso@mit.edu>
- *
- * Miquel van Smoorenburg (miquels@drinkel.ow.org) 20-Oct-1994:
- * o Changed -t fstype to behave like with mount when -A (all file
- * systems) or -M (like mount) is specified.
- * o fsck looks if it can find the fsck.type program to decide
- * if it should ignore the fs type. This way more fsck programs
- * can be added without changing this front-end.
- * o -R flag skip root file system.
- *
- * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- * 2001, 2002, 2003, 2004, 2005 by Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <limits.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <time.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <paths.h>
-#include <unistd.h>
-#include <errno.h>
-#include <signal.h>
-
-#include "fsck.h"
-#include "blkid/blkid.h"
-
-#include "e2fsbb.h"
-
-#include "busybox.h"
-
-#ifndef _PATH_MNTTAB
-#define _PATH_MNTTAB "/etc/fstab"
-#endif
-
-/*
- * fsck.h
- */
-
-#ifndef DEFAULT_FSTYPE
-#define DEFAULT_FSTYPE "ext2"
-#endif
-
-#define MAX_DEVICES 32
-#define MAX_ARGS 32
-
-/*
- * Internal structure for mount tabel entries.
- */
-
-struct fs_info {
- char *device;
- char *mountpt;
- char *type;
- char *opts;
- int freq;
- int passno;
- int flags;
- struct fs_info *next;
-};
-
-#define FLAG_DONE 1
-#define FLAG_PROGRESS 2
-
-/*
- * Structure to allow exit codes to be stored
- */
-struct fsck_instance {
- int pid;
- int flags;
- int exit_status;
- time_t start_time;
- char * prog;
- char * type;
- char * device;
- char * base_device;
- struct fsck_instance *next;
-};
-
-/*
- * base_device.c
- *
- * Return the "base device" given a particular device; this is used to
- * assure that we only fsck one partition on a particular drive at any
- * one time. Otherwise, the disk heads will be seeking all over the
- * place. If the base device cannot be determined, return NULL.
- *
- * The base_device() function returns an allocated string which must
- * be freed.
- *
- */
-
-
-#ifdef CONFIG_FEATURE_DEVFS
-/*
- * Required for the uber-silly devfs /dev/ide/host1/bus2/target3/lun3
- * pathames.
- */
-static const char * const devfs_hier[] = {
- "host", "bus", "target", "lun", 0
-};
-#endif
-
-static char *base_device(const char *device)
-{
- char *str, *cp;
-#ifdef CONFIG_FEATURE_DEVFS
- const char * const *hier;
- const char *disk;
- int len;
-#endif
-
- cp = str = xstrdup(device);
-
- /* Skip over /dev/; if it's not present, give up. */
- if (strncmp(cp, "/dev/", 5) != 0)
- goto errout;
- cp += 5;
-
- /*
- * For md devices, we treat them all as if they were all
- * on one disk, since we don't know how to parallelize them.
- */
- if (cp[0] == 'm' && cp[1] == 'd') {
- *(cp+2) = 0;
- return str;
- }
-
- /* Handle DAC 960 devices */
- if (strncmp(cp, "rd/", 3) == 0) {
- cp += 3;
- if (cp[0] != 'c' || cp[2] != 'd' ||
- !isdigit(cp[1]) || !isdigit(cp[3]))
- goto errout;
- *(cp+4) = 0;
- return str;
- }
-
- /* Now let's handle /dev/hd* and /dev/sd* devices.... */
- if ((cp[0] == 'h' || cp[0] == 's') && (cp[1] == 'd')) {
- cp += 2;
- /* If there's a single number after /dev/hd, skip it */
- if (isdigit(*cp))
- cp++;
- /* What follows must be an alpha char, or give up */
- if (!isalpha(*cp))
- goto errout;
- *(cp + 1) = 0;
- return str;
- }
-
-#ifdef CONFIG_FEATURE_DEVFS
- /* Now let's handle devfs (ugh) names */
- len = 0;
- if (strncmp(cp, "ide/", 4) == 0)
- len = 4;
- if (strncmp(cp, "scsi/", 5) == 0)
- len = 5;
- if (len) {
- cp += len;
- /*
- * Now we proceed down the expected devfs hierarchy.
- * i.e., .../host1/bus2/target3/lun4/...
- * If we don't find the expected token, followed by
- * some number of digits at each level, abort.
- */
- for (hier = devfs_hier; *hier; hier++) {
- len = strlen(*hier);
- if (strncmp(cp, *hier, len) != 0)
- goto errout;
- cp += len;
- while (*cp != '/' && *cp != 0) {
- if (!isdigit(*cp))
- goto errout;
- cp++;
- }
- cp++;
- }
- *(cp - 1) = 0;
- return str;
- }
-
- /* Now handle devfs /dev/disc or /dev/disk names */
- disk = 0;
- if (strncmp(cp, "discs/", 6) == 0)
- disk = "disc";
- else if (strncmp(cp, "disks/", 6) == 0)
- disk = "disk";
- if (disk) {
- cp += 6;
- if (strncmp(cp, disk, 4) != 0)
- goto errout;
- cp += 4;
- while (*cp != '/' && *cp != 0) {
- if (!isdigit(*cp))
- goto errout;
- cp++;
- }
- *cp = 0;
- return str;
- }
-#endif
-
-errout:
- free(str);
- return NULL;
-}
-
-
-static const char * const ignored_types[] = {
- "ignore",
- "iso9660",
- "nfs",
- "proc",
- "sw",
- "swap",
- "tmpfs",
- "devpts",
- NULL
-};
-
-static const char * const really_wanted[] = {
- "minix",
- "ext2",
- "ext3",
- "jfs",
- "reiserfs",
- "xiafs",
- "xfs",
- NULL
-};
-
-#define BASE_MD "/dev/md"
-
-/*
- * Global variables for options
- */
-static char *devices[MAX_DEVICES];
-static char *args[MAX_ARGS];
-static int num_devices, num_args;
-
-static int verbose;
-static int doall;
-static int noexecute;
-static int serialize;
-static int skip_root;
-static int like_mount;
-static int notitle;
-static int parallel_root;
-static int progress;
-static int progress_fd;
-static int force_all_parallel;
-static int num_running;
-static int max_running;
-static volatile int cancel_requested;
-static int kill_sent;
-static char *fstype;
-static struct fs_info *filesys_info, *filesys_last;
-static struct fsck_instance *instance_list;
-static char *fsck_path;
-static blkid_cache cache;
-
-static char *string_copy(const char *s)
-{
- char *ret;
-
- if (!s)
- return 0;
- ret = strdup(s);
- return ret;
-}
-
-static int string_to_int(const char *s)
-{
- long l;
- char *p;
-
- l = strtol(s, &p, 0);
- if (*p || l == LONG_MIN || l == LONG_MAX || l < 0 || l > INT_MAX)
- return -1;
- else
- return (int) l;
-}
-
-static char *skip_over_blank(char *cp)
-{
- while (*cp && isspace(*cp))
- cp++;
- return cp;
-}
-
-static char *skip_over_word(char *cp)
-{
- while (*cp && !isspace(*cp))
- cp++;
- return cp;
-}
-
-static void strip_line(char *line)
-{
- char *p;
-
- while (*line) {
- p = line + strlen(line) - 1;
- if ((*p == '\n') || (*p == '\r'))
- *p = 0;
- else
- break;
- }
-}
-
-static char *parse_word(char **buf)
-{
- char *word, *next;
-
- word = *buf;
- if (*word == 0)
- return 0;
-
- word = skip_over_blank(word);
- next = skip_over_word(word);
- if (*next)
- *next++ = 0;
- *buf = next;
- return word;
-}
-
-static void parse_escape(char *word)
-{
- char *q, c;
- const char *p;
-
- if (!word)
- return;
-
- for (p = q = word; *p; q++) {
- c = *p++;
- if (c != '\\') {
- *q = c;
- } else {
- *q = bb_process_escape_sequence(&p);
- }
- }
- *q = 0;
-}
-
-static void free_instance(struct fsck_instance *i)
-{
- if (i->prog)
- free(i->prog);
- if (i->device)
- free(i->device);
- if (i->base_device)
- free(i->base_device);
- free(i);
- return;
-}
-
-static struct fs_info *create_fs_device(const char *device, const char *mntpnt,
- const char *type, const char *opts,
- int freq, int passno)
-{
- struct fs_info *fs;
-
- if (!(fs = malloc(sizeof(struct fs_info))))
- return NULL;
-
- fs->device = string_copy(device);
- fs->mountpt = string_copy(mntpnt);
- fs->type = string_copy(type);
- fs->opts = string_copy(opts ? opts : "");
- fs->freq = freq;
- fs->passno = passno;
- fs->flags = 0;
- fs->next = NULL;
-
- if (!filesys_info)
- filesys_info = fs;
- else
- filesys_last->next = fs;
- filesys_last = fs;
-
- return fs;
-}
-
-
-
-static int parse_fstab_line(char *line, struct fs_info **ret_fs)
-{
- char *dev, *device, *mntpnt, *type, *opts, *freq, *passno, *cp;
- struct fs_info *fs;
-
- *ret_fs = 0;
- strip_line(line);
- if ((cp = strchr(line, '#')))
- *cp = 0; /* Ignore everything after the comment char */
- cp = line;
-
- device = parse_word(&cp);
- mntpnt = parse_word(&cp);
- type = parse_word(&cp);
- opts = parse_word(&cp);
- freq = parse_word(&cp);
- passno = parse_word(&cp);
-
- if (!device)
- return 0; /* Allow blank lines */
-
- if (!mntpnt || !type)
- return -1;
-
- parse_escape(device);
- parse_escape(mntpnt);
- parse_escape(type);
- parse_escape(opts);
- parse_escape(freq);
- parse_escape(passno);
-
- dev = blkid_get_devname(cache, device, NULL);
- if (dev)
- device = dev;
-
- if (strchr(type, ','))
- type = 0;
-
- fs = create_fs_device(device, mntpnt, type ? type : "auto", opts,
- freq ? atoi(freq) : -1,
- passno ? atoi(passno) : -1);
- if (dev)
- free(dev);
-
- if (!fs)
- return -1;
- *ret_fs = fs;
- return 0;
-}
-
-static void interpret_type(struct fs_info *fs)
-{
- char *t;
-
- if (strcmp(fs->type, "auto") != 0)
- return;
- t = blkid_get_tag_value(cache, "TYPE", fs->device);
- if (t) {
- free(fs->type);
- fs->type = t;
- }
-}
-
-/*
- * Load the filesystem database from /etc/fstab
- */
-static void load_fs_info(const char *filename)
-{
- FILE *f;
- char buf[1024];
- int lineno = 0;
- int old_fstab = 1;
- struct fs_info *fs;
-
- if ((f = fopen(filename, "r")) == NULL) {
- bb_perror_msg("WARNING: cannot open %s", filename);
- return;
- }
- while (!feof(f)) {
- lineno++;
- if (!fgets(buf, sizeof(buf), f))
- break;
- buf[sizeof(buf)-1] = 0;
- if (parse_fstab_line(buf, &fs) < 0) {
- bb_error_msg("WARNING: bad format "
- "on line %d of %s\n", lineno, filename);
- continue;
- }
- if (!fs)
- continue;
- if (fs->passno < 0)
- fs->passno = 0;
- else
- old_fstab = 0;
- }
-
- fclose(f);
-
- if (old_fstab) {
- fputs("\007\007\007"
- "WARNING: Your /etc/fstab does not contain the fsck passno\n"
- " field. I will kludge around things for you, but you\n"
- " should fix your /etc/fstab file as soon as you can.\n\n", stderr);
-
- for (fs = filesys_info; fs; fs = fs->next) {
- fs->passno = 1;
- }
- }
-}
-
-/* Lookup filesys in /etc/fstab and return the corresponding entry. */
-static struct fs_info *lookup(char *filesys)
-{
- struct fs_info *fs;
-
- /* No filesys name given. */
- if (filesys == NULL)
- return NULL;
-
- for (fs = filesys_info; fs; fs = fs->next) {
- if (!strcmp(filesys, fs->device) ||
- (fs->mountpt && !strcmp(filesys, fs->mountpt)))
- break;
- }
-
- return fs;
-}
-
-/* Find fsck program for a given fs type. */
-static char *find_fsck(char *type)
-{
- char *s;
- const char *tpl;
- char *p = string_copy(fsck_path);
- struct stat st;
-
- /* Are we looking for a program or just a type? */
- tpl = (strncmp(type, "fsck.", 5) ? "%s/fsck.%s" : "%s/%s");
-
- for(s = strtok(p, ":"); s; s = strtok(NULL, ":")) {
- s = xasprintf(tpl, s, type);
- if (stat(s, &st) == 0) break;
- free(s);
- }
- free(p);
- return s;
-}
-
-static int progress_active(void)
-{
- struct fsck_instance *inst;
-
- for (inst = instance_list; inst; inst = inst->next) {
- if (inst->flags & FLAG_DONE)
- continue;
- if (inst->flags & FLAG_PROGRESS)
- return 1;
- }
- return 0;
-}
-
-/*
- * Execute a particular fsck program, and link it into the list of
- * child processes we are waiting for.
- */
-static int execute(const char *type, const char *device, const char *mntpt,
- int interactive)
-{
- char *s, *argv[80];
- char *prog;
- int argc, i;
- struct fsck_instance *inst, *p;
- pid_t pid;
-
- inst = malloc(sizeof(struct fsck_instance));
- if (!inst)
- return ENOMEM;
- memset(inst, 0, sizeof(struct fsck_instance));
-
- prog = xasprintf("fsck.%s", type);
- argv[0] = prog;
- argc = 1;
-
- for (i=0; i <num_args; i++)
- argv[argc++] = string_copy(args[i]);
-
- if (progress && !progress_active()) {
- if ((strcmp(type, "ext2") == 0) ||
- (strcmp(type, "ext3") == 0)) {
- char tmp[80];
- snprintf(tmp, 80, "-C%d", progress_fd);
- argv[argc++] = string_copy(tmp);
- inst->flags |= FLAG_PROGRESS;
- }
- }
-
- argv[argc++] = string_copy(device);
- argv[argc] = 0;
-
- s = find_fsck(prog);
- if (s == NULL) {
- bb_error_msg("%s: not found", prog);
- return ENOENT;
- }
-
- if (verbose || noexecute) {
- printf("[%s (%d) -- %s] ", s, num_running,
- mntpt ? mntpt : device);
- for (i=0; i < argc; i++)
- printf("%s ", argv[i]);
- puts("");
- }
-
- /* Fork and execute the correct program. */
- if (noexecute)
- pid = -1;
- else if ((pid = fork()) < 0) {
- perror("fork");
- return errno;
- } else if (pid == 0) {
- if (!interactive)
- close(0);
- (void) execv(s, argv);
- bb_perror_msg_and_die("%s", argv[0]);
- }
-
- for (i = 1; i < argc; i++)
- free(argv[i]);
-
- free(s);
- inst->pid = pid;
- inst->prog = prog;
- inst->type = string_copy(type);
- inst->device = string_copy(device);
- inst->base_device = base_device(device);
- inst->start_time = time(0);
- inst->next = NULL;
-
- /*
- * Find the end of the list, so we add the instance on at the end.
- */
- for (p = instance_list; p && p->next; p = p->next);
-
- if (p)
- p->next = inst;
- else
- instance_list = inst;
-
- return 0;
-}
-
-/*
- * Send a signal to all outstanding fsck child processes
- */
-static int kill_all(int signum)
-{
- struct fsck_instance *inst;
- int n = 0;
-
- for (inst = instance_list; inst; inst = inst->next) {
- if (inst->flags & FLAG_DONE)
- continue;
- kill(inst->pid, signum);
- n++;
- }
- return n;
-}
-
-/*
- * Wait for one child process to exit; when it does, unlink it from
- * the list of executing child processes, and return it.
- */
-static struct fsck_instance *wait_one(int flags)
-{
- int status;
- int sig;
- struct fsck_instance *inst, *inst2, *prev;
- pid_t pid;
-
- if (!instance_list)
- return NULL;
-
- if (noexecute) {
- inst = instance_list;
- prev = 0;
-#ifdef RANDOM_DEBUG
- while (inst->next && (random() & 1)) {
- prev = inst;
- inst = inst->next;
- }
-#endif
- inst->exit_status = 0;
- goto ret_inst;
- }
-
- /*
- * gcc -Wall fails saving throw against stupidity
- * (inst and prev are thought to be uninitialized variables)
- */
- inst = prev = NULL;
-
- do {
- pid = waitpid(-1, &status, flags);
- if (cancel_requested && !kill_sent) {
- kill_all(SIGTERM);
- kill_sent++;
- }
- if ((pid == 0) && (flags & WNOHANG))
- return NULL;
- if (pid < 0) {
- if ((errno == EINTR) || (errno == EAGAIN))
- continue;
- if (errno == ECHILD) {
- bb_error_msg("wait: no more child process?!?");
- return NULL;
- }
- perror("wait");
- continue;
- }
- for (prev = 0, inst = instance_list;
- inst;
- prev = inst, inst = inst->next) {
- if (inst->pid == pid)
- break;
- }
- } while (!inst);
-
- if (WIFEXITED(status))
- status = WEXITSTATUS(status);
- else if (WIFSIGNALED(status)) {
- sig = WTERMSIG(status);
- if (sig == SIGINT) {
- status = EXIT_UNCORRECTED;
- } else {
- printf("Warning... %s for device %s exited "
- "with signal %d.\n",
- inst->prog, inst->device, sig);
- status = EXIT_ERROR;
- }
- } else {
- printf("%s %s: status is %x, should never happen.\n",
- inst->prog, inst->device, status);
- status = EXIT_ERROR;
- }
- inst->exit_status = status;
- if (progress && (inst->flags & FLAG_PROGRESS) &&
- !progress_active()) {
- for (inst2 = instance_list; inst2; inst2 = inst2->next) {
- if (inst2->flags & FLAG_DONE)
- continue;
- if (strcmp(inst2->type, "ext2") &&
- strcmp(inst2->type, "ext3"))
- continue;
- /*
- * If we've just started the fsck, wait a tiny
- * bit before sending the kill, to give it
- * time to set up the signal handler
- */
- if (inst2->start_time < time(0)+2) {
- if (fork() == 0) {
- sleep(1);
- kill(inst2->pid, SIGUSR1);
- exit(0);
- }
- } else
- kill(inst2->pid, SIGUSR1);
- inst2->flags |= FLAG_PROGRESS;
- break;
- }
- }
-ret_inst:
- if (prev)
- prev->next = inst->next;
- else
- instance_list = inst->next;
- if (verbose > 1)
- printf("Finished with %s (exit status %d)\n",
- inst->device, inst->exit_status);
- num_running--;
- return inst;
-}
-
-#define FLAG_WAIT_ALL 0
-#define FLAG_WAIT_ATLEAST_ONE 1
-/*
- * Wait until all executing child processes have exited; return the
- * logical OR of all of their exit code values.
- */
-static int wait_many(int flags)
-{
- struct fsck_instance *inst;
- int global_status = 0;
- int wait_flags = 0;
-
- while ((inst = wait_one(wait_flags))) {
- global_status |= inst->exit_status;
- free_instance(inst);
-#ifdef RANDOM_DEBUG
- if (noexecute && (flags & WNOHANG) && !(random() % 3))
- break;
-#endif
- if (flags & FLAG_WAIT_ATLEAST_ONE)
- wait_flags = WNOHANG;
- }
- return global_status;
-}
-
-/*
- * Run the fsck program on a particular device
- *
- * If the type is specified using -t, and it isn't prefixed with "no"
- * (as in "noext2") and only one filesystem type is specified, then
- * use that type regardless of what is specified in /etc/fstab.
- *
- * If the type isn't specified by the user, then use either the type
- * specified in /etc/fstab, or DEFAULT_FSTYPE.
- */
-static void fsck_device(struct fs_info *fs, int interactive)
-{
- const char *type;
- int retval;
-
- interpret_type(fs);
-
- if (strcmp(fs->type, "auto") != 0)
- type = fs->type;
- else if (fstype && strncmp(fstype, "no", 2) &&
- strncmp(fstype, "opts=", 5) && strncmp(fstype, "loop", 4) &&
- !strchr(fstype, ','))
- type = fstype;
- else
- type = DEFAULT_FSTYPE;
-
- num_running++;
- retval = execute(type, fs->device, fs->mountpt, interactive);
- if (retval) {
- bb_error_msg("error %d while executing fsck.%s for %s",
- retval, type, fs->device);
- num_running--;
- }
-}
-
-
-/*
- * Deal with the fsck -t argument.
- */
-struct fs_type_compile {
- char **list;
- int *type;
- int negate;
-} fs_type_compiled;
-
-#define FS_TYPE_NORMAL 0
-#define FS_TYPE_OPT 1
-#define FS_TYPE_NEGOPT 2
-
-static const char fs_type_syntax_error[] =
-"Either all or none of the filesystem types passed to -t must be prefixed\n"
- "with 'no' or '!'.";
-
-static void compile_fs_type(char *fs_type, struct fs_type_compile *cmp)
-{
- char *cp, *list, *s;
- int num = 2;
- int negate, first_negate = 1;
-
- if (fs_type) {
- for (cp=fs_type; *cp; cp++) {
- if (*cp == ',')
- num++;
- }
- }
-
- cmp->list = xzalloc(num * sizeof(char *));
- cmp->type = xzalloc(num * sizeof(int));
- cmp->negate = 0;
-
- if (!fs_type)
- return;
-
- list = string_copy(fs_type);
- num = 0;
- s = strtok(list, ",");
- while(s) {
- negate = 0;
- if (strncmp(s, "no", 2) == 0) {
- s += 2;
- negate = 1;
- } else if (*s == '!') {
- s++;
- negate = 1;
- }
- if (strcmp(s, "loop") == 0)
- /* loop is really short-hand for opts=loop */
- goto loop_special_case;
- else if (strncmp(s, "opts=", 5) == 0) {
- s += 5;
- loop_special_case:
- cmp->type[num] = negate ? FS_TYPE_NEGOPT : FS_TYPE_OPT;
- } else {
- if (first_negate) {
- cmp->negate = negate;
- first_negate = 0;
- }
- if ((negate && !cmp->negate) ||
- (!negate && cmp->negate)) {
- bb_error_msg_and_die("%s", fs_type_syntax_error);
- }
- }
- cmp->list[num++] = string_copy(s);
- s = strtok(NULL, ",");
- }
- free(list);
-}
-
-/*
- * This function returns true if a particular option appears in a
- * comma-delimited options list
- */
-static int opt_in_list(char *opt, char *optlist)
-{
- char *list, *s;
-
- if (!optlist)
- return 0;
- list = string_copy(optlist);
-
- s = strtok(list, ",");
- while(s) {
- if (strcmp(s, opt) == 0) {
- free(list);
- return 1;
- }
- s = strtok(NULL, ",");
- }
- free(list);
- return 0;
-}
-
-/* See if the filesystem matches the criteria given by the -t option */
-static int fs_match(struct fs_info *fs, struct fs_type_compile *cmp)
-{
- int n, ret = 0, checked_type = 0;
- char *cp;
-
- if (cmp->list == 0 || cmp->list[0] == 0)
- return 1;
-
- for (n=0; (cp = cmp->list[n]); n++) {
- switch (cmp->type[n]) {
- case FS_TYPE_NORMAL:
- checked_type++;
- if (strcmp(cp, fs->type) == 0) {
- ret = 1;
- }
- break;
- case FS_TYPE_NEGOPT:
- if (opt_in_list(cp, fs->opts))
- return 0;
- break;
- case FS_TYPE_OPT:
- if (!opt_in_list(cp, fs->opts))
- return 0;
- break;
- }
- }
- if (checked_type == 0)
- return 1;
- return (cmp->negate ? !ret : ret);
-}
-
-/* Check if we should ignore this filesystem. */
-static int ignore(struct fs_info *fs)
-{
- int wanted;
- char *s;
-
- /*
- * If the pass number is 0, ignore it.
- */
- if (fs->passno == 0)
- return 1;
-
- interpret_type(fs);
-
- /*
- * If a specific fstype is specified, and it doesn't match,
- * ignore it.
- */
- if (!fs_match(fs, &fs_type_compiled)) return 1;
-
- /* Are we ignoring this type? */
- if (index_in_str_array(ignored_types, fs->type) >= 0)
- return 1;
-
- /* Do we really really want to check this fs? */
- wanted = index_in_str_array(really_wanted, fs->type) >= 0;
-
- /* See if the <fsck.fs> program is available. */
- s = find_fsck(fs->type);
- if (s == NULL) {
- if (wanted)
- bb_error_msg("cannot check %s: fsck.%s not found",
- fs->device, fs->type);
- return 1;
- }
- free(s);
-
- /* We can and want to check this file system type. */
- return 0;
-}
-
-/*
- * Returns TRUE if a partition on the same disk is already being
- * checked.
- */
-static int device_already_active(char *device)
-{
- struct fsck_instance *inst;
- char *base;
-
- if (force_all_parallel)
- return 0;
-
-#ifdef BASE_MD
- /* Don't check a soft raid disk with any other disk */
- if (instance_list &&
- (!strncmp(instance_list->device, BASE_MD, sizeof(BASE_MD)-1) ||
- !strncmp(device, BASE_MD, sizeof(BASE_MD)-1)))
- return 1;
-#endif
-
- base = base_device(device);
- /*
- * If we don't know the base device, assume that the device is
- * already active if there are any fsck instances running.
- */
- if (!base)
- return (instance_list != 0);
- for (inst = instance_list; inst; inst = inst->next) {
- if (!inst->base_device || !strcmp(base, inst->base_device)) {
- free(base);
- return 1;
- }
- }
- free(base);
- return 0;
-}
-
-/* Check all file systems, using the /etc/fstab table. */
-static int check_all(void)
-{
- struct fs_info *fs = NULL;
- int status = EXIT_OK;
- int not_done_yet = 1;
- int passno = 1;
- int pass_done;
-
- if (verbose)
- fputs("Checking all file systems.\n", stdout);
-
- /*
- * Do an initial scan over the filesystem; mark filesystems
- * which should be ignored as done, and resolve any "auto"
- * filesystem types (done as a side-effect of calling ignore()).
- */
- for (fs = filesys_info; fs; fs = fs->next) {
- if (ignore(fs))
- fs->flags |= FLAG_DONE;
- }
-
- /*
- * Find and check the root filesystem.
- */
- if (!parallel_root) {
- for (fs = filesys_info; fs; fs = fs->next) {
- if (LONE_CHAR(fs->mountpt, '/'))
- break;
- }
- if (fs) {
- if (!skip_root && !ignore(fs)) {
- fsck_device(fs, 1);
- status |= wait_many(FLAG_WAIT_ALL);
- if (status > EXIT_NONDESTRUCT)
- return status;
- }
- fs->flags |= FLAG_DONE;
- }
- }
- /*
- * This is for the bone-headed user who enters the root
- * filesystem twice. Skip root will skep all root entries.
- */
- if (skip_root)
- for (fs = filesys_info; fs; fs = fs->next)
- if (LONE_CHAR(fs->mountpt, '/'))
- fs->flags |= FLAG_DONE;
-
- while (not_done_yet) {
- not_done_yet = 0;
- pass_done = 1;
-
- for (fs = filesys_info; fs; fs = fs->next) {
- if (cancel_requested)
- break;
- if (fs->flags & FLAG_DONE)
- continue;
- /*
- * If the filesystem's pass number is higher
- * than the current pass number, then we don't
- * do it yet.
- */
- if (fs->passno > passno) {
- not_done_yet++;
- continue;
- }
- /*
- * If a filesystem on a particular device has
- * already been spawned, then we need to defer
- * this to another pass.
- */
- if (device_already_active(fs->device)) {
- pass_done = 0;
- continue;
- }
- /*
- * Spawn off the fsck process
- */
- fsck_device(fs, serialize);
- fs->flags |= FLAG_DONE;
-
- /*
- * Only do one filesystem at a time, or if we
- * have a limit on the number of fsck's extant
- * at one time, apply that limit.
- */
- if (serialize ||
- (max_running && (num_running >= max_running))) {
- pass_done = 0;
- break;
- }
- }
- if (cancel_requested)
- break;
- if (verbose > 1)
- printf("--waiting-- (pass %d)\n", passno);
- status |= wait_many(pass_done ? FLAG_WAIT_ALL :
- FLAG_WAIT_ATLEAST_ONE);
- if (pass_done) {
- if (verbose > 1)
- printf("----------------------------------\n");
- passno++;
- } else
- not_done_yet++;
- }
- if (cancel_requested && !kill_sent) {
- kill_all(SIGTERM);
- kill_sent++;
- }
- status |= wait_many(FLAG_WAIT_ATLEAST_ONE);
- return status;
-}
-
-static void signal_cancel(int sig FSCK_ATTR((unused)))
-{
- cancel_requested++;
-}
-
-static void PRS(int argc, char *argv[])
-{
- int i, j;
- char *arg, *dev, *tmp = 0;
- char options[128];
- int opt = 0;
- int opts_for_fsck = 0;
- struct sigaction sa;
-
- /*
- * Set up signal action
- */
- memset(&sa, 0, sizeof(struct sigaction));
- sa.sa_handler = signal_cancel;
- sigaction(SIGINT, &sa, 0);
- sigaction(SIGTERM, &sa, 0);
-
- num_devices = 0;
- num_args = 0;
- instance_list = 0;
-
- for (i=1; i < argc; i++) {
- arg = argv[i];
- if (!arg)
- continue;
- if ((arg[0] == '/' && !opts_for_fsck) || strchr(arg, '=')) {
- if (num_devices >= MAX_DEVICES) {
- bb_error_msg_and_die("too many devices");
- }
- dev = blkid_get_devname(cache, arg, NULL);
- if (!dev && strchr(arg, '=')) {
- /*
- * Check to see if we failed because
- * /proc/partitions isn't found.
- */
- if (access("/proc/partitions", R_OK) < 0) {
- bb_perror_msg_and_die("cannot open /proc/partitions "
- "(is /proc mounted?)");
- }
- /*
- * Check to see if this is because
- * we're not running as root
- */
- if (geteuid())
- bb_error_msg_and_die(
- "must be root to scan for matching filesystems: %s\n", arg);
- else
- bb_error_msg_and_die(
- "cannot find matching filesystem: %s", arg);
- }
- devices[num_devices++] = dev ? dev : string_copy(arg);
- continue;
- }
- if (arg[0] != '-' || opts_for_fsck) {
- if (num_args >= MAX_ARGS) {
- bb_error_msg_and_die("too many arguments");
- }
- args[num_args++] = string_copy(arg);
- continue;
- }
- for (j=1; arg[j]; j++) {
- if (opts_for_fsck) {
- options[++opt] = arg[j];
- continue;
- }
- switch (arg[j]) {
- case 'A':
- doall++;
- break;
- case 'C':
- progress++;
- if (arg[j+1]) {
- progress_fd = string_to_int(arg+j+1);
- if (progress_fd < 0)
- progress_fd = 0;
- else
- goto next_arg;
- } else if ((i+1) < argc
- && argv[i+1][0] != '-') {
- progress_fd = string_to_int(argv[i]);
- if (progress_fd < 0)
- progress_fd = 0;
- else {
- goto next_arg;
- i++;
- }
- }
- break;
- case 'V':
- verbose++;
- break;
- case 'N':
- noexecute++;
- break;
- case 'R':
- skip_root++;
- break;
- case 'T':
- notitle++;
- break;
- case 'M':
- like_mount++;
- break;
- case 'P':
- parallel_root++;
- break;
- case 's':
- serialize++;
- break;
- case 't':
- tmp = 0;
- if (fstype)
- bb_show_usage();
- if (arg[j+1])
- tmp = arg+j+1;
- else if ((i+1) < argc)
- tmp = argv[++i];
- else
- bb_show_usage();
- fstype = string_copy(tmp);
- compile_fs_type(fstype, &fs_type_compiled);
- goto next_arg;
- case '-':
- opts_for_fsck++;
- break;
- case '?':
- bb_show_usage();
- break;
- default:
- options[++opt] = arg[j];
- break;
- }
- }
- next_arg:
- if (opt) {
- options[0] = '-';
- options[++opt] = '\0';
- if (num_args >= MAX_ARGS) {
- bb_error_msg("too many arguments");
- }
- args[num_args++] = string_copy(options);
- opt = 0;
- }
- }
- if (getenv("FSCK_FORCE_ALL_PARALLEL"))
- force_all_parallel++;
- if ((tmp = getenv("FSCK_MAX_INST")))
- max_running = atoi(tmp);
-}
-
-int fsck_main(int argc, char *argv[])
-{
- int i, status = 0;
- int interactive = 0;
- const char *fstab;
- struct fs_info *fs;
-
- setvbuf(stdout, NULL, _IONBF, BUFSIZ);
- setvbuf(stderr, NULL, _IONBF, BUFSIZ);
-
- blkid_get_cache(&cache, NULL);
- PRS(argc, argv);
-
- if (!notitle)
- printf("fsck %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
-
- fstab = getenv("FSTAB_FILE");
- if (!fstab)
- fstab = _PATH_MNTTAB;
- load_fs_info(fstab);
-
- fsck_path = e2fs_set_sbin_path();
-
- if ((num_devices == 1) || (serialize))
- interactive = 1;
-
- /* If -A was specified ("check all"), do that! */
- if (doall)
- return check_all();
-
- if (num_devices == 0) {
- serialize++;
- interactive++;
- return check_all();
- }
- for (i = 0 ; i < num_devices; i++) {
- if (cancel_requested) {
- if (!kill_sent) {
- kill_all(SIGTERM);
- kill_sent++;
- }
- break;
- }
- fs = lookup(devices[i]);
- if (!fs) {
- fs = create_fs_device(devices[i], 0, "auto",
- 0, -1, -1);
- if (!fs)
- continue;
- }
- fsck_device(fs, interactive);
- if (serialize ||
- (max_running && (num_running >= max_running))) {
- struct fsck_instance *inst;
-
- inst = wait_one(0);
- if (inst) {
- status |= inst->exit_status;
- free_instance(inst);
- }
- if (verbose > 1)
- printf("----------------------------------\n");
- }
- }
- status |= wait_many(FLAG_WAIT_ALL);
- blkid_put_cache(cache);
- return status;
-}
generated by cgit v1.1 at 2024-12-30 21:20:43 +0000