+++ /dev/null
-/*
- * fsck --- 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.
- *
- * Copyright (C) 2009, 2012 Karel Zak <kzak@redhat.com>
- *
- * This file may be redistributed under the terms of the GNU Public
- * License.
- */
-
-#define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
-
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <sys/file.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <time.h>
-#include <stdlib.h>
-#include <paths.h>
-#include <unistd.h>
-#include <errno.h>
-#include <signal.h>
-#include <dirent.h>
-#include <blkid.h>
-#include <libmount.h>
-
-#include "nls.h"
-#include "pathnames.h"
-#include "exitcodes.h"
-#include "c.h"
-
-#define XALLOC_EXIT_CODE FSCK_EX_ERROR
-#include "xalloc.h"
-
-#ifndef DEFAULT_FSTYPE
-# define DEFAULT_FSTYPE "ext2"
-#endif
-
-#define MAX_DEVICES 32
-#define MAX_ARGS 32
-
-static const char *ignored_types[] = {
- "ignore",
- "iso9660",
- "sw",
- NULL
-};
-
-static const char *really_wanted[] = {
- "minix",
- "ext2",
- "ext3",
- "ext4",
- "ext4dev",
- "jfs",
- "reiserfs",
- "xiafs",
- "xfs",
- NULL
-};
-
-/*
- * Internal structure for mount tabel entries.
- */
-struct fsck_fs_data
-{
- const char *device;
- dev_t disk;
- unsigned int stacked:1,
- done:1,
- eval_device:1;
-};
-
-/*
- * Structure to allow exit codes to be stored
- */
-struct fsck_instance {
- int pid;
- int flags; /* FLAG_{DONE|PROGRESS} */
- int lock; /* flock()ed whole disk file descriptor or -1 */
- int exit_status;
- time_t start_time;
- char * prog;
- char * type;
-
- struct libmnt_fs *fs;
- struct fsck_instance *next;
-};
-
-#define FLAG_DONE 1
-#define FLAG_PROGRESS 2
-
-/*
- * Global variables for options
- */
-static char *devices[MAX_DEVICES];
-static char *args[MAX_ARGS];
-static int num_devices, num_args;
-
-static int lockdisk;
-static int verbose;
-static int doall;
-static int noexecute;
-static int serialize;
-static int skip_root;
-static int ignore_mounted;
-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 fsck_instance *instance_list;
-
-static const char fsck_prefix_path[] = FS_SEARCH_PATH;
-static char *fsck_path;
-
-/* parsed fstab and mtab */
-static struct libmnt_table *fstab, *mtab;
-static struct libmnt_cache *mntcache;
-
-static int count_slaves(dev_t disk);
-
-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 int is_mounted(struct libmnt_fs *fs)
-{
- int rc;
-
- if (!mtab) {
- mtab = mnt_new_table();
- if (!mtab)
- err(FSCK_EX_ERROR, ("failed to initialize libmount table"));
- if (!mntcache)
- mntcache = mnt_new_cache();
- mnt_table_set_cache(mtab, mntcache);
- mnt_table_parse_mtab(mtab, NULL);
- }
-
- rc = mnt_table_is_fs_mounted(mtab, fs);
- if (verbose) {
- if (rc)
- printf(_("%s is mounted\n"), mnt_fs_get_target(fs));
- else
- printf(_("%s is not mounted\n"), mnt_fs_get_target(fs));
- }
- return rc;
-}
-
-static int ignore(struct libmnt_fs *);
-
-static struct fsck_fs_data *fs_create_data(struct libmnt_fs *fs)
-{
- struct fsck_fs_data *data = mnt_fs_get_userdata(fs);
-
- if (!data) {
- data = xcalloc(1, sizeof(*data));
- mnt_fs_set_userdata(fs, data);
- }
- return data;
-}
-
-/*
- * fs from fstab might contains real device name as well as symlink,
- * LABEL or UUID, this function returns canonicalized result.
- */
-static const char *fs_get_device(struct libmnt_fs *fs)
-{
- struct fsck_fs_data *data = mnt_fs_get_userdata(fs);
-
- if (!data || !data->eval_device) {
- const char *spec = mnt_fs_get_source(fs);
-
- if (!data)
- data = fs_create_data(fs);
-
- data->eval_device = 1;
- data->device = mnt_resolve_spec(spec, mnt_table_get_cache(fstab));
- if (!data->device)
- data->device = xstrdup(spec);
- }
-
- return data->device;
-}
-
-static dev_t fs_get_disk(struct libmnt_fs *fs, int check)
-{
- struct fsck_fs_data *data;
- const char *device;
- struct stat st;
-
- data = mnt_fs_get_userdata(fs);
- if (data && data->disk)
- return data->disk;
-
- if (!check)
- return 0;
-
- if (mnt_fs_is_netfs(fs) || mnt_fs_is_pseudofs(fs))
- return 0;
-
- device = fs_get_device(fs);
- if (!device)
- return 0;
-
- data = fs_create_data(fs);
-
- if (!stat(device, &st) &&
- !blkid_devno_to_wholedisk(st.st_rdev, NULL, 0, &data->disk)) {
-
- if (data->disk)
- data->stacked = count_slaves(data->disk) > 0 ? 1 : 0;
- return data->disk;
- }
- return 0;
-}
-
-static int fs_is_stacked(struct libmnt_fs *fs)
-{
- struct fsck_fs_data *data = mnt_fs_get_userdata(fs);
- return data ? data->stacked : 0;
-}
-
-static int fs_is_done(struct libmnt_fs *fs)
-{
- struct fsck_fs_data *data = mnt_fs_get_userdata(fs);
- return data ? data->done : 0;
-}
-
-static void fs_set_done(struct libmnt_fs *fs)
-{
- struct fsck_fs_data *data = fs_create_data(fs);
-
- if (data)
- data->done = 1;
-}
-
-static int is_irrotational_disk(dev_t disk)
-{
- char path[PATH_MAX];
- FILE *f;
- int rc, x;
-
-
- rc = snprintf(path, sizeof(path),
- "/sys/dev/block/%d:%d/queue/rotational",
- major(disk), minor(disk));
-
- if (rc < 0 || (unsigned int) (rc + 1) > sizeof(path))
- return 0;
-
- f = fopen(path, "r");
- if (!f)
- return 0;
-
- rc = fscanf(f, "%d", &x);
- if (rc != 1) {
- if (ferror(f))
- warn(_("failed to read: %s"), path);
- else
- warnx(_("parse error: %s"), path);
- }
- fclose(f);
-
- return rc == 1 ? !x : 0;
-}
-
-static void lock_disk(struct fsck_instance *inst)
-{
- dev_t disk = fs_get_disk(inst->fs, 1);
- char *diskname;
-
- if (!disk || is_irrotational_disk(disk))
- return;
-
- diskname = blkid_devno_to_devname(disk);
- if (!diskname)
- return;
-
- if (verbose)
- printf(_("Locking disk %s ... "), diskname);
-
- inst->lock = open(diskname, O_CLOEXEC | O_RDONLY);
- if (inst->lock >= 0) {
- int rc = -1;
-
- /* inform users that we're waiting on the lock */
- if (verbose &&
- (rc = flock(inst->lock, LOCK_EX | LOCK_NB)) != 0 &&
- errno == EWOULDBLOCK)
- printf(_("(waiting) "));
-
- if (rc != 0 && flock(inst->lock, LOCK_EX) != 0) {
- close(inst->lock); /* failed */
- inst->lock = -1;
- }
- }
-
- if (verbose)
- /* TRANSLATORS: These are followups to "Locking disk...". */
- printf("%s.\n", inst->lock >= 0 ? _("succeeded") : _("failed"));
-
- free(diskname);
- return;
-}
-
-static void unlock_disk(struct fsck_instance *inst)
-{
- if (inst->lock >= 0) {
- /* explicitly unlock, don't rely on close(), maybe some library
- * (e.g. liblkid) has still open the device.
- */
- flock(inst->lock, LOCK_UN);
- close(inst->lock);
-
- inst->lock = -1;
- }
-}
-
-static void free_instance(struct fsck_instance *i)
-{
- if (lockdisk)
- unlock_disk(i);
- free(i->prog);
- free(i);
- return;
-}
-
-static struct libmnt_fs *add_dummy_fs(const char *device)
-{
- struct libmnt_fs *fs = mnt_new_fs();
-
- if (fs && mnt_fs_set_source(fs, device) == 0 &&
- mnt_table_add_fs(fstab, fs) == 0)
- return fs;
-
- mnt_free_fs(fs);
- err(FSCK_EX_ERROR, _("failed to setup description for %s"), device);
-}
-
-static void fs_interpret_type(struct libmnt_fs *fs)
-{
- const char *device;
- const char *type = mnt_fs_get_fstype(fs);
-
- if (type && strcmp(type, "auto") != 0)
- return;
-
- mnt_fs_set_fstype(fs, NULL);
-
- device = fs_get_device(fs);
- if (device) {
- int ambi = 0;
-
- type = mnt_get_fstype(device, &ambi, mnt_table_get_cache(fstab));
- if (!ambi)
- mnt_fs_set_fstype(fs, type);
- }
-}
-
-static int parser_errcb(struct libmnt_table *tb __attribute__ ((__unused__)),
- const char *filename, int line)
-{
- warnx(_("%s: parse error at line %d -- ignore"), filename, line);
- return 0;
-}
-
-/*
- * Load the filesystem database from /etc/fstab
- */
-static void load_fs_info(void)
-{
- const char *path;
-
- fstab = mnt_new_table();
- if (!fstab)
- err(FSCK_EX_ERROR, ("failed to initialize libmount table"));
-
- mnt_table_set_parser_errcb(fstab, parser_errcb);
- mnt_table_set_cache(fstab, mntcache);
-
- errno = 0;
-
- /*
- * Let's follow libmount defauls if $FSTAB_FILE is not specified
- */
- path = getenv("FSTAB_FILE");
-
- if (mnt_table_parse_fstab(fstab, path)) {
- mnt_free_table(fstab);
- if (!path)
- path = mnt_get_fstab_path();
- if (errno)
- warn(_("%s: failed to parse fstab"), path);
- else
- warnx(_("%s: failed to parse fstab"), path);
- }
-}
-
-/*
- * Lookup filesys in /etc/fstab and return the corresponding entry.
- * The @path has to be real path (no TAG) by mnt_resolve_spec().
- */
-static struct libmnt_fs *lookup(char *path)
-{
- struct libmnt_fs *fs;
-
- if (!path)
- return NULL;
-
- fs = mnt_table_find_srcpath(fstab, path, MNT_ITER_FORWARD);
- if (!fs)
- fs = mnt_table_find_target(fstab, path, MNT_ITER_FORWARD);
-
- return fs;
-}
-
-/* Find fsck program for a given fs type. */
-static char *find_fsck(const char *type)
-{
- char *s;
- const char *tpl;
- static char prog[256];
- char *p = xstrdup(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, ":")) {
- sprintf(prog, tpl, s, type);
- if (stat(prog, &st) == 0)
- break;
- }
- free(p);
-
- return(s ? prog : NULL);
-}
-
-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, struct libmnt_fs *fs, int interactive)
-{
- char *s, *argv[80], prog[80];
- int argc, i;
- struct fsck_instance *inst, *p;
- pid_t pid;
-
- inst = xcalloc(1, sizeof(*inst));
-
- sprintf(prog, "fsck.%s", type);
- argv[0] = xstrdup(prog);
- argc = 1;
-
- for (i=0; i <num_args; i++)
- argv[argc++] = xstrdup(args[i]);
-
- if (progress) {
- if ((strcmp(type, "ext2") == 0) ||
- (strcmp(type, "ext3") == 0) ||
- (strcmp(type, "ext4") == 0) ||
- (strcmp(type, "ext4dev") == 0)) {
- char tmp[80];
-
- tmp[0] = 0;
- if (!progress_active()) {
- snprintf(tmp, 80, "-C%d", progress_fd);
- inst->flags |= FLAG_PROGRESS;
- } else if (progress_fd)
- snprintf(tmp, 80, "-C%d", progress_fd * -1);
- if (tmp[0])
- argv[argc++] = xstrdup(tmp);
- }
- }
-
- argv[argc++] = xstrdup(fs_get_device(fs));
- argv[argc] = 0;
-
- s = find_fsck(prog);
- if (s == NULL) {
- warnx(_("%s: not found"), prog);
- free(inst);
- return ENOENT;
- }
-
- if (verbose || noexecute) {
- const char *tgt = mnt_fs_get_target(fs);
-
- if (!tgt)
- tgt = fs_get_device(fs);
- printf("[%s (%d) -- %s] ", s, num_running, tgt);
- for (i=0; i < argc; i++)
- printf("%s ", argv[i]);
- printf("\n");
- }
-
- inst->fs = fs;
- inst->lock = -1;
-
- if (lockdisk)
- lock_disk(inst);
-
- /* Fork and execute the correct program. */
- if (noexecute)
- pid = -1;
- else if ((pid = fork()) < 0) {
- warn(_("fork failed"));
- free(inst);
- return errno;
- } else if (pid == 0) {
- if (!interactive)
- close(0);
- execv(s, argv);
- err(FSCK_EX_ERROR, _("%s: execute failed"), s);
- }
-
- for (i=0; i < argc; i++)
- free(argv[i]);
-
- inst->pid = pid;
- inst->prog = xstrdup(prog);
- inst->type = xstrdup(type);
- 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) {
- warnx(_("wait: no more child process?!?"));
- return NULL;
- }
- warn(_("waidpid failed"));
- 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 = FSCK_EX_UNCORRECTED;
- } else {
- warnx(_("Warning... %s for device %s exited "
- "with signal %d."),
- inst->prog, fs_get_device(inst->fs), sig);
- status = FSCK_EX_ERROR;
- }
- } else {
- warnx(_("%s %s: status is %x, should never happen."),
- inst->prog, fs_get_device(inst->fs), status);
- status = FSCK_EX_ERROR;
- }
- inst->exit_status = status;
- inst->flags |= FLAG_DONE;
- 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") &&
- strcmp(inst2->type, "ext4") &&
- strcmp(inst2->type, "ext4dev"))
- 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(FSCK_EX_OK);
- }
- } 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"),
- fs_get_device(inst->fs), 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 int fsck_device(struct libmnt_fs *fs, int interactive)
-{
- const char *type;
- int retval;
-
- fs_interpret_type(fs);
-
- type = mnt_fs_get_fstype(fs);
-
- if (type && strcmp(type, "auto") != 0)
- ;
- 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, interactive);
- if (retval) {
- warnx(_("error %d while executing fsck.%s for %s"),
- retval, type, fs_get_device(fs));
- num_running--;
- return FSCK_EX_ERROR;
- }
- return 0;
-}
-
-
-/*
- * 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 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 = xcalloc(num, sizeof(char *));
- cmp->type = xcalloc(num, sizeof(int));
- cmp->negate = 0;
-
- if (!fs_type)
- return;
-
- list = xstrdup(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)) {
- errx(FSCK_EX_USAGE,
- _("Either all or none of the filesystem types passed to -t must be prefixed\n"
- "with 'no' or '!'."));
- }
- }
-
- cmp->list[num++] = xstrdup(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(const char *opt, const char *optlist)
-{
- char *list, *s;
-
- if (!optlist)
- return 0;
- list = xstrdup(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 libmnt_fs *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:
- {
- const char *type = mnt_fs_get_fstype(fs);
-
- checked_type++;
- if (type && strcmp(cp, type) == 0)
- ret = 1;
- break;
- }
- case FS_TYPE_NEGOPT:
- if (opt_in_list(cp, mnt_fs_get_options(fs)))
- return 0;
- break;
- case FS_TYPE_OPT:
- if (!opt_in_list(cp, mnt_fs_get_options(fs)))
- return 0;
- break;
- }
- }
- if (checked_type == 0)
- return 1;
- return (cmp->negate ? !ret : ret);
-}
-
-/*
- * Check if a device exists
- */
-static int device_exists(const char *device)
-{
- struct stat st;
-
- if (stat(device, &st) == -1)
- return 0;
- if (!S_ISBLK(st.st_mode))
- return 0;
- return 1;
-}
-
-static int fs_ignored_type(struct libmnt_fs *fs)
-{
- const char **ip, *type;
-
- if (mnt_fs_is_netfs(fs) || mnt_fs_is_pseudofs(fs) || mnt_fs_is_swaparea(fs))
- return 1;
-
- type = mnt_fs_get_fstype(fs);
-
- for(ip = ignored_types; type && *ip; ip++) {
- if (strcmp(type, *ip) == 0)
- return 1;
- }
-
- return 0;
-}
-
-/* Check if we should ignore this filesystem. */
-static int ignore(struct libmnt_fs *fs)
-{
- const char **ip, *type;
- int wanted = 0;
-
- /*
- * If the pass number is 0, ignore it.
- */
- if (mnt_fs_get_passno(fs) == 0)
- return 1;
-
- /*
- * If this is a bind mount, ignore it.
- */
- if (opt_in_list("bind", mnt_fs_get_options(fs))) {
- warnx(_("%s: skipping bad line in /etc/fstab: "
- "bind mount with nonzero fsck pass number"),
- mnt_fs_get_target(fs));
- return 1;
- }
-
- /*
- * ignore devices that don't exist and have the "nofail" mount option
- */
- if (!device_exists(fs_get_device(fs))) {
- if (opt_in_list("nofail", mnt_fs_get_options(fs))) {
- if (verbose)
- printf(_("%s: skipping nonexistent device\n"),
- fs_get_device(fs));
- return 1;
- }
- if (verbose)
- printf(_("%s: nonexistent device (\"nofail\" fstab "
- "option may be used to skip this device)\n"),
- fs_get_device(fs));
- }
-
- fs_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;
-
- type = mnt_fs_get_fstype(fs);
- if (!type) {
- if (verbose)
- printf(_("%s: skipping unknown filesystem type\n"),
- fs_get_device(fs));
- return 1;
- }
-
- /* Are we ignoring this type? */
- if (fs_ignored_type(fs))
- return 1;
-
- /* Do we really really want to check this fs? */
- for(ip = really_wanted; *ip; ip++)
- if (strcmp(type, *ip) == 0) {
- wanted = 1;
- break;
- }
-
- /* See if the <fsck.fs> program is available. */
- if (find_fsck(type) == NULL) {
- if (wanted)
- warnx(_("cannot check %s: fsck.%s not found"),
- fs_get_device(fs), type);
- return 1;
- }
-
- /* We can and want to check this file system type. */
- return 0;
-}
-
-static int count_slaves(dev_t disk)
-{
- DIR *dir;
- struct dirent *dp;
- char dirname[PATH_MAX];
- int count = 0;
-
- snprintf(dirname, sizeof(dirname),
- "/sys/dev/block/%u:%u/slaves/",
- major(disk), minor(disk));
-
- if (!(dir = opendir(dirname)))
- return -1;
-
- while ((dp = readdir(dir)) != 0) {
-#ifdef _DIRENT_HAVE_D_TYPE
- if (dp->d_type != DT_UNKNOWN && dp->d_type != DT_LNK)
- continue;
-#endif
- if (dp->d_name[0] == '.' &&
- ((dp->d_name[1] == 0) ||
- ((dp->d_name[1] == '.') && (dp->d_name[2] == 0))))
- continue;
-
- count++;
- }
-
- closedir(dir);
- return count;
-}
-
-/*
- * Returns TRUE if a partition on the same disk is already being
- * checked.
- */
-static int disk_already_active(struct libmnt_fs *fs)
-{
- struct fsck_instance *inst;
- dev_t disk;
-
- if (force_all_parallel)
- return 0;
-
- if (instance_list && fs_is_stacked(instance_list->fs))
- /* any instance for a stacked device is already running */
- return 1;
-
- disk = fs_get_disk(fs, 1);
-
- /*
- * If we don't know the base device, assume that the device is
- * already active if there are any fsck instances running.
- *
- * Don't check a stacked device with any other disk too.
- */
- if (!disk || fs_is_stacked(fs))
- return (instance_list != 0);
-
- for (inst = instance_list; inst; inst = inst->next) {
- dev_t idisk = fs_get_disk(inst->fs, 0);
-
- if (!idisk || disk == idisk)
- return 1;
- }
-
- return 0;
-}
-
-/* Check all file systems, using the /etc/fstab table. */
-static int check_all(void)
-{
- int not_done_yet = 1;
- int passno = 1;
- int pass_done;
- int status = FSCK_EX_OK;
-
- struct libmnt_fs *fs;
- struct libmnt_iter *itr = mnt_new_iter(MNT_ITER_FORWARD);
-
- if (!itr)
- err(FSCK_EX_ERROR, _("failed to allocate iterator"));
-
- /*
- * 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()).
- */
- while (mnt_table_next_fs(fstab, itr, &fs) == 0) {
- if (ignore(fs)) {
- fs_set_done(fs);
- continue;
- }
- }
-
- if (verbose)
- fputs(_("Checking all file systems.\n"), stdout);
-
- /*
- * Find and check the root filesystem.
- */
- if (!parallel_root) {
- fs = mnt_table_find_target(fstab, "/", MNT_ITER_FORWARD);
- if (fs) {
- if (!skip_root &&
- !fs_is_done(fs) &&
- !(ignore_mounted && is_mounted(fs))) {
- status |= fsck_device(fs, 1);
- status |= wait_many(FLAG_WAIT_ALL);
- if (status > FSCK_EX_NONDESTRUCT) {
- mnt_free_iter(itr);
- return status;
- }
- }
- fs_set_done(fs);
- }
- }
-
- /*
- * This is for the bone-headed user who enters the root
- * filesystem twice. Skip root will skep all root entries.
- */
- if (skip_root) {
- mnt_reset_iter(itr, MNT_ITER_FORWARD);
-
- while(mnt_table_next_fs(fstab, itr, &fs) == 0) {
- const char *tgt = mnt_fs_get_target(fs);
-
- if (tgt && strcmp(tgt, "/") == 0)
- fs_set_done(fs);
- }
- }
-
- while (not_done_yet) {
- not_done_yet = 0;
- pass_done = 1;
-
- mnt_reset_iter(itr, MNT_ITER_FORWARD);
-
- while(mnt_table_next_fs(fstab, itr, &fs) == 0) {
-
- if (cancel_requested)
- break;
- if (fs_is_done(fs))
- continue;
- /*
- * If the filesystem's pass number is higher
- * than the current pass number, then we don't
- * do it yet.
- */
- if (mnt_fs_get_passno(fs) > passno) {
- not_done_yet++;
- continue;
- }
- if (ignore_mounted && is_mounted(fs)) {
- fs_set_done(fs);
- continue;
- }
- /*
- * If a filesystem on a particular device has
- * already been spawned, then we need to defer
- * this to another pass.
- */
- if (disk_already_active(fs)) {
- pass_done = 0;
- continue;
- }
- /*
- * Spawn off the fsck process
- */
- status |= fsck_device(fs, serialize);
- fs_set_done(fs);
-
- /*
- * 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);
- mnt_free_iter(itr);
- return status;
-}
-
-static void __attribute__((__noreturn__)) usage(void)
-{
- printf(_("\nUsage:\n"
- " %s [fsck-options] [fs-options] [filesys ...]\n"),
- program_invocation_short_name);
-
- puts(_( "\nOptions:\n"
- " -A check all filesystems\n"
- " -R skip root filesystem; useful only with `-A'\n"
- " -M do not check mounted filesystems\n"
- " -t <type> specify filesystem types to be checked;\n"
- " type is allowed to be comma-separated list\n"
- " -P check filesystems in parallel, including root\n"
- " -s serialize fsck operations\n"
- " -l lock the device using flock()\n"
- " -N do not execute, just show what would be done\n"
- " -T do not show the title on startup\n"
- " -C <fd> display progress bar; file descriptor is for GUIs\n"
- " -V explain what is being done\n"
- " -? display this help and exit\n\n"
- "See fsck.* commands for fs-options."));
-
- exit(FSCK_EX_USAGE);
-}
-
-static void signal_cancel(int sig __attribute__((__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)
- errx(FSCK_EX_ERROR, _("too many devices"));
-
- dev = mnt_resolve_spec(arg, mntcache);
-
- if (!dev && strchr(arg, '=')) {
- /*
- * Check to see if we failed because
- * /proc/partitions isn't found.
- */
- if (access(_PATH_PROC_PARTITIONS, R_OK) < 0) {
- warn(_("couldn't open %s"),
- _PATH_PROC_PARTITIONS);
- errx(FSCK_EX_ERROR, _("Is /proc mounted?"));
- }
- /*
- * Check to see if this is because
- * we're not running as root
- */
- if (geteuid())
- errx(FSCK_EX_ERROR,
- _("must be root to scan for matching filesystems: %s"),
- arg);
- else
- errx(FSCK_EX_ERROR,
- _("couldn't find matching filesystem: %s"),
- arg);
- }
- devices[num_devices++] = dev ? dev : xstrdup(arg);
- continue;
- }
- if (arg[0] != '-' || opts_for_fsck) {
- if (num_args >= MAX_ARGS)
- errx(FSCK_EX_ERROR, _("too many arguments"));
- args[num_args++] = xstrdup(arg);
- continue;
- }
- for (j=1; arg[j]; j++) {
- if (opts_for_fsck) {
- options[++opt] = arg[j];
- continue;
- }
- switch (arg[j]) {
- case 'A':
- doall = 1;
- break;
- case 'C':
- progress = 1;
- 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 &&
- !strncmp(argv[i+1], "-", 1) == 0) {
- progress_fd = string_to_int(argv[i]);
- if (progress_fd < 0)
- progress_fd = 0;
- else {
- ++i;
- goto next_arg;
- }
- }
- break;
- case 'l':
- lockdisk = 1;
- break;
- case 'V':
- verbose++;
- break;
- case 'N':
- noexecute = 1;
- break;
- case 'R':
- skip_root = 1;
- break;
- case 'T':
- notitle = 1;
- break;
- case 'M':
- ignore_mounted = 1;
- break;
- case 'P':
- parallel_root = 1;
- break;
- case 's':
- serialize = 1;
- break;
- case 't':
- tmp = 0;
- if (fstype)
- usage();
- if (arg[j+1])
- tmp = arg+j+1;
- else if ((i+1) < argc)
- tmp = argv[++i];
- else
- usage();
- fstype = xstrdup(tmp);
- compile_fs_type(fstype, &fs_type_compiled);
- goto next_arg;
- case '-':
- opts_for_fsck++;
- break;
- case '?':
- usage();
- break;
- default:
- options[++opt] = arg[j];
- break;
- }
- }
- next_arg:
- if (opt) {
- options[0] = '-';
- options[++opt] = '\0';
- if (num_args >= MAX_ARGS)
- errx(FSCK_EX_ERROR, _("too many arguments"));
- args[num_args++] = xstrdup(options);
- opt = 0;
- }
- }
- if (getenv("FSCK_FORCE_ALL_PARALLEL"))
- force_all_parallel++;
- if ((tmp = getenv("FSCK_MAX_INST")))
- max_running = atoi(tmp);
-}
-
-int main(int argc, char *argv[])
-{
- int i, status = 0;
- int interactive = 0;
- char *oldpath = getenv("PATH");
- struct libmnt_fs *fs;
-
- setvbuf(stdout, NULL, _IONBF, BUFSIZ);
- setvbuf(stderr, NULL, _IONBF, BUFSIZ);
-
- setlocale(LC_MESSAGES, "");
- setlocale(LC_CTYPE, "");
- bindtextdomain(PACKAGE, LOCALEDIR);
- textdomain(PACKAGE);
-
- mnt_init_debug(0); /* init libmount debug mask */
- mntcache = mnt_new_cache(); /* no fatal error if failed */
-
- PRS(argc, argv);
-
- if (!notitle)
- printf(_("%s from %s\n"), program_invocation_short_name, PACKAGE_STRING);
-
- load_fs_info();
-
- /* Update our search path to include uncommon directories. */
- if (oldpath) {
- fsck_path = xmalloc (strlen (fsck_prefix_path) + 1 +
- strlen (oldpath) + 1);
- strcpy (fsck_path, fsck_prefix_path);
- strcat (fsck_path, ":");
- strcat (fsck_path, oldpath);
- } else {
- fsck_path = xstrdup(fsck_prefix_path);
- }
-
- if ((num_devices == 1) || (serialize))
- interactive = 1;
-
- if (lockdisk && (doall || num_devices > 1)) {
- warnx(_("the -l option can be used with one "
- "device only -- ignore"));
- lockdisk = 0;
- }
-
- /* 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 = add_dummy_fs(devices[i]);
- else if (fs_ignored_type(fs))
- continue;
-
- if (ignore_mounted && is_mounted(fs))
- continue;
- status |= 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);
- free(fsck_path);
- mnt_free_cache(mntcache);
- mnt_free_table(fstab);
- mnt_free_table(mtab);
- return status;
-}
-
projects / thirdparty / util-linux.git / blobdiff