fsck: move functions around so that related ones are nearby
no actual code changes
This commit is contained in:
Denis Vlasenko
parent
a0e701d137
commit
1abf91aa25
355
e2fsprogs/fsck.c
355
e2fsprogs/fsck.c
@ -395,9 +395,7 @@ static void interpret_type(struct fs_info *fs)
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#endif
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#define interpret_type(fs) ((void)0)
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/*
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* Load the filesystem database from /etc/fstab
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*/
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/* Load the filesystem database from /etc/fstab */
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static void load_fs_info(const char *filename)
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{
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FILE *f;
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@ -470,86 +468,6 @@ static int progress_active(void)
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return 0;
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}
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/*
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* Execute a particular fsck program, and link it into the list of
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* child processes we are waiting for.
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*/
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static int execute(const char *type, const char *device, const char *mntpt,
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int interactive)
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{
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char *argv[num_args + 4]; /* see count below: */
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int argc;
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int i;
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struct fsck_instance *inst, *p;
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pid_t pid;
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inst = xzalloc(sizeof(*inst));
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argv[0] = xasprintf("fsck.%s", type); /* 1 */
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for (i = 0; i < num_args; i++)
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argv[i+1] = args[i]; /* num_args */
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argc = num_args + 1;
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if (progress && !progress_active()) {
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if (strcmp(type, "ext2") == 0
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|| strcmp(type, "ext3") == 0
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) {
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argv[argc++] = xasprintf("-C%d", progress_fd); /* 1 */
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inst->flags |= FLAG_PROGRESS;
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}
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}
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argv[argc++] = xstrdup(device); /* 1 */
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argv[argc] = 0; /* 1 */
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if (verbose || noexecute) {
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printf("[%s (%d) -- %s]", argv[0], num_running,
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mntpt ? mntpt : device);
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for (i = 0; i < argc; i++)
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printf(" %s", argv[i]);
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puts("");
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}
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/* Fork and execute the correct program. */
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if (noexecute)
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pid = -1;
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else if ((pid = fork()) < 0) {
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bb_perror_msg("fork");
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return errno;
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}
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if (pid == 0) {
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/* Child */
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if (!interactive)
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close(0);
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execvp(argv[0], argv);
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bb_perror_msg_and_die("%s", argv[0]);
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}
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for (i = num_args+1; i < argc; i++)
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free(argv[i]);
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inst->pid = pid;
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inst->prog = argv[0];
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inst->type = xstrdup(type);
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inst->device = xstrdup(device);
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inst->base_device = base_device(device);
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inst->start_time = time(0);
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inst->next = NULL;
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/*
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* Find the end of the list, so we add the instance on at the end.
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*/
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if (!instance_list) {
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instance_list = inst;
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return 0;
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}
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p = instance_list;
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while (p->next)
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p = p->next;
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p->next = inst;
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return 0;
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}
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/*
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* Send a signal to all outstanding fsck child processes
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*/
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@ -586,7 +504,7 @@ static struct fsck_instance *wait_one(int flags)
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if (noexecute) {
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inst = instance_list;
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prev = 0;
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prev = NULL;
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#ifdef RANDOM_DEBUG
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while (inst->next && (random() & 1)) {
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prev = inst;
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@ -615,14 +533,16 @@ static struct fsck_instance *wait_one(int flags)
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bb_error_msg("wait: no more child process?!?");
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return NULL;
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}
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perror("wait");
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bb_perror_msg("wait");
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continue;
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}
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for (prev = 0, inst = instance_list;
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inst;
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prev = inst, inst = inst->next) {
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prev = NULL;
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inst = instance_list;
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while (inst) {
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if (inst->pid == pid)
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break;
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prev = inst;
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inst = inst->next;
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}
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} while (!inst);
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@ -648,22 +568,21 @@ static struct fsck_instance *wait_one(int flags)
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for (inst2 = instance_list; inst2; inst2 = inst2->next) {
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if (inst2->flags & FLAG_DONE)
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continue;
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if (strcmp(inst2->type, "ext2") &&
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strcmp(inst2->type, "ext3"))
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if (strcmp(inst2->type, "ext2") != 0
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&& strcmp(inst2->type, "ext3") != 0
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) {
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continue;
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/*
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}
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/* ext[23], we will send USR1
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* (request to start displaying progress bar)
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*
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* If we've just started the fsck, wait a tiny
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* bit before sending the kill, to give it
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* time to set up the signal handler
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*/
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if (inst2->start_time < time(0)+2) {
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if (fork() == 0) {
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sleep(1);
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kill(inst2->pid, SIGUSR1);
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exit(0);
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}
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} else
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kill(inst2->pid, SIGUSR1);
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if (inst2->start_time >= time(NULL) - 1)
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sleep(1);
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kill(inst2->pid, SIGUSR1);
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inst2->flags |= FLAG_PROGRESS;
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break;
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}
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@ -705,6 +624,86 @@ static int wait_many(int flags)
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return global_status;
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}
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/*
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* Execute a particular fsck program, and link it into the list of
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* child processes we are waiting for.
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*/
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static int execute(const char *type, const char *device, const char *mntpt,
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int interactive)
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{
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char *argv[num_args + 4]; /* see count below: */
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int argc;
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int i;
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struct fsck_instance *inst, *p;
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pid_t pid;
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inst = xzalloc(sizeof(*inst));
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argv[0] = xasprintf("fsck.%s", type); /* 1 */
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for (i = 0; i < num_args; i++)
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argv[i+1] = args[i]; /* num_args */
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argc = num_args + 1;
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if (progress && !progress_active()) {
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if (strcmp(type, "ext2") == 0
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|| strcmp(type, "ext3") == 0
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) {
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argv[argc++] = xasprintf("-C%d", progress_fd); /* 1 */
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inst->flags |= FLAG_PROGRESS;
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}
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}
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argv[argc++] = xstrdup(device); /* 1 */
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argv[argc] = NULL; /* 1 */
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if (verbose || noexecute) {
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printf("[%s (%d) -- %s]", argv[0], num_running,
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mntpt ? mntpt : device);
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for (i = 0; i < argc; i++)
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printf(" %s", argv[i]);
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puts("");
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}
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/* Fork and execute the correct program. */
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pid = -1;
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if (!noexecute) {
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pid = fork(); /* TODO: NOMMU friendly way (vfork)? */
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if (pid < 0)
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bb_perror_msg_and_die("fork");
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if (pid == 0) {
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/* Child */
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if (!interactive)
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close(0);
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execvp(argv[0], argv);
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bb_perror_msg_and_die("%s", argv[0]);
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}
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}
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for (i = num_args+1; i < argc; i++)
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free(argv[i]);
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inst->pid = pid;
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inst->prog = argv[0];
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inst->type = xstrdup(type);
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inst->device = xstrdup(device);
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inst->base_device = base_device(device);
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inst->start_time = time(NULL);
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inst->next = NULL;
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/*
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* Find the end of the list, so we add the instance on at the end.
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*/
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if (!instance_list) {
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instance_list = inst;
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return 0;
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}
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p = instance_list;
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while (p->next)
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p = p->next;
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p->next = inst;
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return 0;
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}
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/*
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* Run the fsck program on a particular device
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*
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@ -742,63 +741,6 @@ static void fsck_device(struct fs_info *fs, int interactive)
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}
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}
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/*
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* Deal with the fsck -t argument.
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*/
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static void compile_fs_type(char *fs_type)
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{
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char *cp, *list, *s;
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int num = 2;
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int negate;
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if (fs_type) {
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cp = fs_type;
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while ((cp = strchr(cp, ','))) {
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num++;
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cp++;
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}
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}
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fs_type_list = xzalloc(num * sizeof(fs_type_list[0]));
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fs_type_flag = xzalloc(num * sizeof(fs_type_flag[0]));
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fs_type_negated = -1;
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if (!fs_type)
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return;
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list = xstrdup(fs_type);
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num = 0;
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s = strtok(list, ",");
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while (s) {
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negate = 0;
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if (s[0] == 'n' && s[1] == 'o') { /* "no.." */
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s += 2;
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negate = 1;
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} else if (s[0] == '!') {
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s++;
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negate = 1;
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}
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if (strcmp(s, "loop") == 0)
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/* loop is really short-hand for opts=loop */
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goto loop_special_case;
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if (strncmp(s, "opts=", 5) == 0) {
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s += 5;
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loop_special_case:
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fs_type_flag[num] = negate ? FS_TYPE_FLAG_NEGOPT : FS_TYPE_FLAG_OPT;
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} else {
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if (fs_type_negated == -1)
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fs_type_negated = negate;
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if (fs_type_negated != negate)
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bb_error_msg_and_die(
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"Either all or none of the filesystem types passed to -t must be prefixed\n"
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"with 'no' or '!'.");
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}
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fs_type_list[num++] = xstrdup(s);
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s = strtok(NULL, ",");
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}
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free(list);
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}
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/*
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* This function returns true if a particular option appears in a
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* comma-delimited options list
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@ -922,7 +864,7 @@ static int device_already_active(char *device)
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* already active if there are any fsck instances running.
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*/
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if (!base)
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return (instance_list != 0);
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return (instance_list != NULL);
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for (inst = instance_list; inst; inst = inst->next) {
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if (!inst->base_device || !strcmp(base, inst->base_device)) {
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@ -1047,9 +989,70 @@ static int check_all(void)
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return status;
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}
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static void signal_cancel(int sig ATTRIBUTE_UNUSED)
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/*
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* Deal with the fsck -t argument.
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* Huh, for mount "-t novfat,nfs" means "neither vfat nor nfs"!
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* Why here we require "-t novfat,nonfs" ??
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*/
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static void compile_fs_type(char *fs_type)
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{
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cancel_requested = 1;
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char *s;
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int num = 2;
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smallint negate;
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if (fs_type) {
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s = fs_type;
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while ((s = strchr(s, ','))) {
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num++;
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s++;
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}
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}
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fs_type_list = xzalloc(num * sizeof(fs_type_list[0]));
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fs_type_flag = xzalloc(num * sizeof(fs_type_flag[0]));
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fs_type_negated = -1; /* not yet known is it negated or not */
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if (!fs_type)
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return;
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// list = xstrdup(fs_type);
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num = 0;
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// s = strtok(list, ",");
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s = fs_type;
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while (1) {
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char *comma;
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negate = 0;
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if (s[0] == 'n' && s[1] == 'o') { /* "no.." */
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s += 2;
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negate = 1;
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} else if (s[0] == '!') {
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s++;
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negate = 1;
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}
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if (strcmp(s, "loop") == 0)
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/* loop is really short-hand for opts=loop */
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goto loop_special_case;
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if (strncmp(s, "opts=", 5) == 0) {
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s += 5;
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loop_special_case:
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fs_type_flag[num] = negate ? FS_TYPE_FLAG_NEGOPT : FS_TYPE_FLAG_OPT;
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} else {
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if (fs_type_negated == -1)
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fs_type_negated = negate;
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if (fs_type_negated != negate)
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bb_error_msg_and_die(
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"either all or none of the filesystem types passed to -t must be prefixed "
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"with 'no' or '!'");
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}
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comma = strchr(s, ',');
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fs_type_list[num++] = comma ? xstrndup(s, comma-s) : xstrdup(s);
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if (!comma)
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break;
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s = comma + 1;
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// s = strtok(NULL, ",");
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}
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// free(list);
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}
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static void parse_args(int argc, char *argv[])
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@ -1059,23 +1062,17 @@ static void parse_args(int argc, char *argv[])
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char *options = NULL;
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int optpos = 0;
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int opts_for_fsck = 0;
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struct sigaction sa;
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/*
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* Set up signal action
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*/
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = signal_cancel;
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sigaction(SIGINT, &sa, 0);
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sigaction(SIGTERM, &sa, 0);
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/* in bss
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num_devices = 0;
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num_args = 0;
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instance_list = 0;
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instance_list = NULL;
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*/
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/* TODO: getopt32 */
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for (i = 1; i < argc; i++) {
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arg = argv[i];
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/* "/dev/blk" or "/path" or "UUID=xxx" or "LABEL=xxx" */
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if ((arg[0] == '/' && !opts_for_fsck) || strchr(arg, '=')) {
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#if 0
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char *dev;
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@ -1095,7 +1092,7 @@ static void parse_args(int argc, char *argv[])
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*/
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if (geteuid())
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bb_error_msg_and_die(
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"must be root to scan for matching filesystems: %s\n", arg);
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"must be root to scan for matching filesystems: %s", arg);
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else
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bb_error_msg_and_die(
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"cannot find matching filesystem: %s", arg);
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@ -1103,6 +1100,8 @@ static void parse_args(int argc, char *argv[])
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devices = xrealloc(devices, (num_devices+1) * sizeof(devices[0]));
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devices[num_devices++] = dev ? dev : xstrdup(arg);
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#endif
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// FIXME: must check that arg is a blkdev, or resolve
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// "/path", "UUID=xxx" or "LABEL=xxx" into block device name
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devices = xrealloc(devices, (num_devices+1) * sizeof(devices[0]));
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devices[num_devices++] = xstrdup(arg);
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continue;
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@ -1197,12 +1196,26 @@ static void parse_args(int argc, char *argv[])
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max_running = xatoi(tmp);
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}
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static void signal_cancel(int sig ATTRIBUTE_UNUSED)
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{
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cancel_requested = 1;
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}
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int fsck_main(int argc, char *argv[])
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{
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int i, status = 0;
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int interactive = 0;
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const char *fstab;
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struct fs_info *fs;
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struct sigaction sa;
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/*
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* Set up signal action
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*/
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = signal_cancel;
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sigaction(SIGINT, &sa, 0);
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sigaction(SIGTERM, &sa, 0);
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setbuf(stdout, NULL);
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/*setvbuf(stdout, NULL, _IONBF, BUFSIZ);*/
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@ -1214,6 +1227,8 @@ int fsck_main(int argc, char *argv[])
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if (!notitle)
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puts("fsck (busybox "BB_VER", "BB_BT")");
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/* Even plain "fsck /dev/hda1" needs fstab to get fs type,
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* so we are scanning it anyway */
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fstab = getenv("FSTAB_FILE");
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if (!fstab)
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fstab = "/etc/fstab";
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