/* 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. * * Licensed under GPLv2, see file LICENSE in this tarball for details. */ #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 "libbb.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 = xstrdup(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); } 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_or_warn(filename, "r")) == NULL) { 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]); bb_putchar('\n'); } /* 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_simple_perror_msg_and_die(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) MAIN_EXTERNALLY_VISIBLE; 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; }