diff options
| -rw-r--r-- | e2fsprogs/fsck.c | 237 |
1 files changed, 100 insertions, 137 deletions
diff --git a/e2fsprogs/fsck.c b/e2fsprogs/fsck.c index 037a563..6769a72 100644 --- a/e2fsprogs/fsck.c +++ b/e2fsprogs/fsck.c @@ -39,6 +39,11 @@ #include "libbb.h" +/* "progress indicator" code is somewhat buggy and ext[23] specific. + * We should be filesystem agnostic. IOW: there should be a well-defined + * API for fsck.something, NOT ad-hoc hacks in generic fsck. */ +#define DO_PROGRESS_INDICATOR 0 + #define EXIT_OK 0 #define EXIT_NONDESTRUCT 1 #define EXIT_DESTRUCT 2 @@ -57,7 +62,6 @@ struct fs_info { char *mountpt; char *type; char *opts; - int freq; int passno; int flags; }; @@ -71,10 +75,10 @@ struct fsck_instance { struct fsck_instance *next; int pid; int flags; - int exit_status; +#if DO_PROGRESS_INDICATOR time_t start_time; +#endif char *prog; - char *type; char *device; char *base_device; /* /dev/hda for /dev/hdaN etc */ }; @@ -125,10 +129,6 @@ static smallint notitle; static smallint parallel_root; static smallint force_all_parallel; -/* "progress indicator" code is somewhat buggy and ext[23] specific. - * We should be filesystem agnostic. IOW: there should be a well-defined - * API for fsck.something, NOT ad-hoc hacks in generic fsck. */ -#define DO_PROGRESS_INDICATOR 0 #if DO_PROGRESS_INDICATOR static smallint progress; static int progress_fd; @@ -273,7 +273,7 @@ static void free_instance(struct fsck_instance *p) static struct fs_info *create_fs_device(const char *device, const char *mntpnt, const char *type, const char *opts, - int freq, int passno) + int passno) { struct fs_info *fs; @@ -282,7 +282,6 @@ static struct fs_info *create_fs_device(const char *device, const char *mntpnt, fs->mountpt = xstrdup(mntpnt); fs->type = xstrdup(type); fs->opts = xstrdup(opts ? opts : ""); - fs->freq = freq; fs->passno = passno; /*fs->flags = 0; */ /*fs->next = NULL; */ @@ -344,10 +343,10 @@ static void parse_escape(char *word) static int parse_fstab_line(char *line, struct fs_info **ret_fs) { - char *device, *mntpnt, *type, *opts, *freq, *passno, *cp; + char *device, *mntpnt, *type, *opts, *passno, *cp; struct fs_info *fs; - *ret_fs = 0; + *ret_fs = NULL; strip_line(line); *strchrnul(line, '#') = '\0'; /* Ignore everything after comment */ cp = line; @@ -357,7 +356,7 @@ static int parse_fstab_line(char *line, struct fs_info **ret_fs) mntpnt = parse_word(&cp); type = parse_word(&cp); opts = parse_word(&cp); - freq = parse_word(&cp); + /*freq =*/ parse_word(&cp); passno = parse_word(&cp); if (!mntpnt || !type) @@ -367,15 +366,13 @@ static int parse_fstab_line(char *line, struct fs_info **ret_fs) parse_escape(mntpnt); parse_escape(type); parse_escape(opts); - parse_escape(freq); parse_escape(passno); if (strchr(type, ',')) type = NULL; fs = create_fs_device(device, mntpnt, type ? type : "auto", opts, - freq ? atoi(freq) : -1, - passno ? atoi(passno) : -1); + (passno ? atoi(passno) : -1)); *ret_fs = fs; return 0; } @@ -477,9 +474,10 @@ static void kill_all_if_cancel_requested(void) /* * Wait for one child process to exit; when it does, unlink it from - * the list of executing child processes, and return it. + * the list of executing child processes, free, and return its exit status. + * If there is no exited child, return -1. */ -static struct fsck_instance *wait_one(int flags) +static int wait_one(int flags) { int status; int sig; @@ -487,46 +485,34 @@ static struct fsck_instance *wait_one(int flags) pid_t pid; if (!instance_list) - return NULL; - - if (noexecute) { - inst = instance_list; - prev = NULL; -#ifdef RANDOM_DEBUG - while (inst->next && (random() & 1)) { - prev = inst; - inst = inst->next; - } -#endif - inst->exit_status = 0; - goto ret_inst; - } + return -1; + /* if (noexecute) { already returned -1; } */ - inst = prev = NULL; /* for gcc */ - do { + while (1) { pid = waitpid(-1, &status, flags); kill_all_if_cancel_requested(); - if (pid == 0 && (flags & WNOHANG)) - return NULL; + if (pid == 0) /* flags == WNOHANG and no children exited */ + return -1; if (pid < 0) { - if (errno == EINTR || errno == EAGAIN) + if (errno == EINTR) continue; - if (errno == ECHILD) { - bb_error_msg("wait: no more child process?!?"); - return NULL; + if (errno == ECHILD) { /* paranoia */ + bb_error_msg("wait: no more children"); + return -1; } bb_perror_msg("wait"); continue; } prev = NULL; inst = instance_list; - while (inst) { + do { if (inst->pid == pid) - break; + goto child_died; prev = inst; inst = inst->next; - } - } while (!inst); + } while (inst); + } + child_died: if (WIFEXITED(status)) status = WEXITSTATUS(status); @@ -534,8 +520,8 @@ static struct fsck_instance *wait_one(int flags) sig = WTERMSIG(status); status = EXIT_UNCORRECTED; if (sig != SIGINT) { - printf("Warning... %s %s exited " - "with signal %d\n", + printf("Warning: %s %s terminated " + "by signal %d\n", inst->prog, inst->device, sig); status = EXIT_ERROR; } @@ -544,7 +530,6 @@ static struct fsck_instance *wait_one(int flags) inst->prog, inst->device, status); status = EXIT_ERROR; } - inst->exit_status = status; #if DO_PROGRESS_INDICATOR if (progress && (inst->flags & FLAG_PROGRESS) && !progress_active()) { @@ -573,39 +558,34 @@ static struct fsck_instance *wait_one(int flags) } #endif - 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); + inst->device, status); num_running--; - return inst; + free_instance(inst); + + return status; } -#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. */ +#define FLAG_WAIT_ALL 0 +#define FLAG_WAIT_ATLEAST_ONE WNOHANG static int wait_many(int flags) { - struct fsck_instance *inst; + int exit_status; 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; + while ((exit_status = wait_one(wait_flags)) != -1) { + global_status |= exit_status; + wait_flags |= flags; } return global_status; } @@ -614,8 +594,8 @@ static int wait_many(int flags) * Execute a particular fsck program, and link it into the list of * child processes we are waiting for. */ -static void execute(const char *type, const char *device, const char *mntpt, - int interactive) +static void execute(const char *type, const char *device, + const char *mntpt /*, int interactive */) { char *argv[num_args + 4]; /* see count below: */ int argc; @@ -623,8 +603,6 @@ static void execute(const char *type, const char *device, const char *mntpt, struct fsck_instance *inst; pid_t pid; - inst = xzalloc(sizeof(*inst)); - argv[0] = xasprintf("fsck.%s", type); /* 1 */ for (i = 0; i < num_args; i++) argv[i+1] = args[i]; /* num_args */ @@ -641,7 +619,7 @@ static void execute(const char *type, const char *device, const char *mntpt, } #endif - argv[argc++] = xstrdup(device); /* 1 */ + argv[argc++] = (char*)device; /* 1 */ argv[argc] = NULL; /* 1 */ if (verbose || noexecute) { @@ -660,21 +638,24 @@ static void execute(const char *type, const char *device, const char *mntpt, bb_simple_perror_msg(argv[0]); } - for (i = num_args+1; i < argc; i++) - free(argv[i]); +#if DO_PROGRESS_INDICATOR + free(argv[num_args + 1]); +#endif - /* No pid, so don't record an instance */ - if (pid < 0) { - free(inst); + /* No child, so don't record an instance */ + if (pid <= 0) { + free(argv[0]); return; } + inst = xzalloc(sizeof(*inst)); inst->pid = pid; inst->prog = argv[0]; - inst->type = xstrdup(type); inst->device = xstrdup(device); inst->base_device = base_device(device); +#if DO_PROGRESS_INDICATOR inst->start_time = time(NULL); +#endif /* Add to the list of running fsck's. * (was adding to the end, but adding to the front is simpler...) */ @@ -692,7 +673,7 @@ static void execute(const char *type, const char *device, const char *mntpt, * If the type isn't specified by the user, then use either the type * specified in /etc/fstab, or "auto". */ -static void fsck_device(struct fs_info *fs, int interactive) +static void fsck_device(struct fs_info *fs /*, int interactive */) { const char *type; @@ -719,7 +700,7 @@ static void fsck_device(struct fs_info *fs, int interactive) } num_running++; - execute(type, fs->device, fs->mountpt, interactive); + execute(type, fs->device, fs->mountpt /*, interactive */); } /* @@ -871,32 +852,31 @@ static int check_all(void) * 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) { + 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, '/')) + if (LONE_CHAR(fs->mountpt, '/')) { + 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; 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 skip all root entries. + * This is for the bone-headed user who has root + * filesystem listed twice. + * "Skip root" will skip _all_ root entries. */ if (skip_root) for (fs = filesys_info; fs; fs = fs->next) @@ -916,7 +896,7 @@ static int check_all(void) continue; /* * If the filesystem's pass number is higher - * than the current pass number, then we don't + * than the current pass number, then we didn't * do it yet. */ if (fs->passno > passno) { @@ -935,7 +915,7 @@ static int check_all(void) /* * Spawn off the fsck process */ - fsck_device(fs, serialize); + fsck_device(fs /*, serialize*/); fs->flags |= FLAG_DONE; /* @@ -979,21 +959,16 @@ static void compile_fs_type(char *fs_type) int num = 2; smallint negate; - if (fs_type) { - s = fs_type; - while ((s = strchr(s, ','))) { - num++; - s++; - } + s = fs_type; + while ((s = strchr(s, ','))) { + num++; + s++; } fs_type_list = xzalloc(num * sizeof(fs_type_list[0])); fs_type_flag = xzalloc(num * sizeof(fs_type_flag[0])); fs_type_negated = -1; /* not yet known is it negated or not */ - if (!fs_type) - return; - num = 0; s = fs_type; while (1) { @@ -1031,12 +1006,12 @@ static void compile_fs_type(char *fs_type) } } -static void parse_args(int argc, char **argv) +static void parse_args(char **argv) { int i, j; char *arg, *tmp; - char *options = NULL; - int optpos = 0; + char *options; + int optpos; int opts_for_fsck = 0; /* in bss, so already zeroed @@ -1045,8 +1020,7 @@ static void parse_args(int argc, char **argv) instance_list = NULL; */ -/* TODO: getopt32 */ - for (i = 1; i < argc; i++) { + for (i = 1; argv[i]; i++) { arg = argv[i]; /* "/dev/blk" or "/path" or "UUID=xxx" or "LABEL=xxx" */ @@ -1065,14 +1039,14 @@ static void parse_args(int argc, char **argv) continue; } + if (LONE_CHAR(arg + 1, '-')) { /* "--" ? */ + opts_for_fsck = 1; + continue; + } + + optpos = 0; + options = NULL; for (j = 1; arg[j]; j++) { - if (opts_for_fsck) { - optpos++; - /* one extra for '\0' */ - options = xrealloc(options, optpos + 2); - options[optpos] = arg[j]; - continue; - } switch (arg[j]) { case 'A': doall = 1; @@ -1085,7 +1059,8 @@ static void parse_args(int argc, char **argv) goto next_arg; } /* -C n */ - progress_fd = xatoi_u(argv[++i]); + if (!argv[++i]) bb_show_usage(); + progress_fd = xatoi_u(argv[i]); goto next_arg; #endif case 'V': @@ -1114,16 +1089,13 @@ static void parse_args(int argc, char **argv) bb_show_usage(); if (arg[++j]) tmp = &arg[j]; - else if (++i < argc) + else if (argv[++i]) tmp = argv[i]; else bb_show_usage(); fstype = xstrdup(tmp); compile_fs_type(fstype); goto next_arg; - case '-': - opts_for_fsck++; - break; case '?': bb_show_usage(); break; @@ -1141,8 +1113,6 @@ static void parse_args(int argc, char **argv) options[optpos + 1] = '\0'; args = xrealloc(args, (num_args+1) * sizeof(args[0])); args[num_args++] = options; - optpos = 0; - options = NULL; } } if (getenv("FSCK_FORCE_ALL_PARALLEL")) @@ -1160,17 +1130,18 @@ static void signal_cancel(int sig ATTRIBUTE_UNUSED) int fsck_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int fsck_main(int argc, char **argv) { - int i, status = 0; - int interactive; + int i, status; + /*int interactive;*/ const char *fstab; struct fs_info *fs; + /* we want wait() to be interruptible */ signal_no_SA_RESTART_empty_mask(SIGINT, signal_cancel); signal_no_SA_RESTART_empty_mask(SIGTERM, signal_cancel); setbuf(stdout, NULL); - parse_args(argc, argv); + parse_args(argv); if (!notitle) puts("fsck (busybox "BB_VER", "BB_BT")"); @@ -1182,18 +1153,14 @@ int fsck_main(int argc, char **argv) fstab = "/etc/fstab"; load_fs_info(fstab); - interactive = (num_devices == 1) | serialize; + /*interactive = (num_devices == 1) | serialize;*/ - /* If -A was specified ("check all"), do that! */ + if (num_devices == 0) + /*interactive =*/ serialize = doall = 1; if (doall) return check_all(); - if (num_devices == 0) { - serialize = 1; - interactive = 1; - return check_all(); - } - + status = 0; for (i = 0; i < num_devices; i++) { if (cancel_requested) { kill_all_if_cancel_requested(); @@ -1202,19 +1169,15 @@ int fsck_main(int argc, char **argv) fs = lookup(devices[i]); if (!fs) - fs = create_fs_device(devices[i], 0, "auto", 0, -1, -1); - fsck_device(fs, interactive); + fs = create_fs_device(devices[i], "", "auto", NULL, -1); + 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); - } + int exit_status = wait_one(0); + if (exit_status >= 0) + status |= exit_status; if (verbose > 1) puts("----------------------------------"); } |