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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-01-19 02:02:33 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-01-19 02:02:33 +0000
commit1abf91aa253bb69ce2d21daca70726941d910d1c (patch)
tree17691bdaae09d19844ae0fa0395f25bda688169b
parenta0e701d137a0d57befe9839ffadd30b69c05899e (diff)
downloadbusybox-1abf91aa253bb69ce2d21daca70726941d910d1c.tar.gz
busybox-1abf91aa253bb69ce2d21daca70726941d910d1c.tar.bz2
fsck: move functions around so that related ones are nearby
no actual code changes
-rw-r--r--e2fsprogs/fsck.c355
1 files changed, 185 insertions, 170 deletions
diff --git a/e2fsprogs/fsck.c b/e2fsprogs/fsck.c
index ea311df6d..681bfd15f 100644
--- a/e2fsprogs/fsck.c
+++ b/e2fsprogs/fsck.c
@@ -395,9 +395,7 @@ static void interpret_type(struct fs_info *fs)
#endif
#define interpret_type(fs) ((void)0)
-/*
- * Load the filesystem database from /etc/fstab
- */
+/* Load the filesystem database from /etc/fstab */
static void load_fs_info(const char *filename)
{
FILE *f;
@@ -471,86 +469,6 @@ static int progress_active(void)
}
/*
- * 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 *argv[num_args + 4]; /* see count below: */
- int argc;
- int i;
- struct fsck_instance *inst, *p;
- 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 */
- argc = num_args + 1;
-
- if (progress && !progress_active()) {
- if (strcmp(type, "ext2") == 0
- || strcmp(type, "ext3") == 0
- ) {
- argv[argc++] = xasprintf("-C%d", progress_fd); /* 1 */
- inst->flags |= FLAG_PROGRESS;
- }
- }
-
- argv[argc++] = xstrdup(device); /* 1 */
- argv[argc] = 0; /* 1 */
-
- if (verbose || noexecute) {
- printf("[%s (%d) -- %s]", argv[0], num_running,
- mntpt ? mntpt : device);
- for (i = 0; i < argc; i++)
- printf(" %s", argv[i]);
- puts("");
- }
-
- /* Fork and execute the correct program. */
- if (noexecute)
- pid = -1;
- else if ((pid = fork()) < 0) {
- bb_perror_msg("fork");
- return errno;
- }
- if (pid == 0) {
- /* Child */
- if (!interactive)
- close(0);
- execvp(argv[0], argv);
- bb_perror_msg_and_die("%s", argv[0]);
- }
-
- for (i = num_args+1; i < argc; i++)
- free(argv[i]);
-
- inst->pid = pid;
- inst->prog = argv[0];
- inst->type = xstrdup(type);
- inst->device = xstrdup(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.
- */
- if (!instance_list) {
- instance_list = inst;
- return 0;
- }
- p = instance_list;
- while (p->next)
- p = p->next;
- p->next = inst;
- return 0;
-}
-
-/*
* Send a signal to all outstanding fsck child processes
*/
static void kill_all_if_cancel_requested(void)
@@ -586,7 +504,7 @@ static struct fsck_instance *wait_one(int flags)
if (noexecute) {
inst = instance_list;
- prev = 0;
+ prev = NULL;
#ifdef RANDOM_DEBUG
while (inst->next && (random() & 1)) {
prev = inst;
@@ -615,14 +533,16 @@ static struct fsck_instance *wait_one(int flags)
bb_error_msg("wait: no more child process?!?");
return NULL;
}
- perror("wait");
+ bb_perror_msg("wait");
continue;
}
- for (prev = 0, inst = instance_list;
- inst;
- prev = inst, inst = inst->next) {
+ prev = NULL;
+ inst = instance_list;
+ while (inst) {
if (inst->pid == pid)
break;
+ prev = inst;
+ inst = inst->next;
}
} while (!inst);
@@ -648,22 +568,21 @@ static struct fsck_instance *wait_one(int flags)
for (inst2 = instance_list; inst2; inst2 = inst2->next) {
if (inst2->flags & FLAG_DONE)
continue;
- if (strcmp(inst2->type, "ext2") &&
- strcmp(inst2->type, "ext3"))
+ if (strcmp(inst2->type, "ext2") != 0
+ && strcmp(inst2->type, "ext3") != 0
+ ) {
continue;
- /*
+ }
+ /* ext[23], we will send USR1
+ * (request to start displaying progress bar)
+ *
* 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);
+ if (inst2->start_time >= time(NULL) - 1)
+ sleep(1);
+ kill(inst2->pid, SIGUSR1);
inst2->flags |= FLAG_PROGRESS;
break;
}
@@ -706,6 +625,86 @@ 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 int execute(const char *type, const char *device, const char *mntpt,
+ int interactive)
+{
+ char *argv[num_args + 4]; /* see count below: */
+ int argc;
+ int i;
+ struct fsck_instance *inst, *p;
+ 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 */
+ argc = num_args + 1;
+
+ if (progress && !progress_active()) {
+ if (strcmp(type, "ext2") == 0
+ || strcmp(type, "ext3") == 0
+ ) {
+ argv[argc++] = xasprintf("-C%d", progress_fd); /* 1 */
+ inst->flags |= FLAG_PROGRESS;
+ }
+ }
+
+ argv[argc++] = xstrdup(device); /* 1 */
+ argv[argc] = NULL; /* 1 */
+
+ if (verbose || noexecute) {
+ printf("[%s (%d) -- %s]", argv[0], num_running,
+ mntpt ? mntpt : device);
+ for (i = 0; i < argc; i++)
+ printf(" %s", argv[i]);
+ puts("");
+ }
+
+ /* Fork and execute the correct program. */
+ pid = -1;
+ if (!noexecute) {
+ pid = fork(); /* TODO: NOMMU friendly way (vfork)? */
+ if (pid < 0)
+ bb_perror_msg_and_die("fork");
+ if (pid == 0) {
+ /* Child */
+ if (!interactive)
+ close(0);
+ execvp(argv[0], argv);
+ bb_perror_msg_and_die("%s", argv[0]);
+ }
+ }
+
+ for (i = num_args+1; i < argc; i++)
+ free(argv[i]);
+
+ inst->pid = pid;
+ inst->prog = argv[0];
+ inst->type = xstrdup(type);
+ inst->device = xstrdup(device);
+ inst->base_device = base_device(device);
+ inst->start_time = time(NULL);
+ inst->next = NULL;
+
+ /*
+ * Find the end of the list, so we add the instance on at the end.
+ */
+ if (!instance_list) {
+ instance_list = inst;
+ return 0;
+ }
+ p = instance_list;
+ while (p->next)
+ p = p->next;
+ p->next = inst;
+ return 0;
+}
+
+/*
* Run the fsck program on a particular device
*
* If the type is specified using -t, and it isn't prefixed with "no"
@@ -743,63 +742,6 @@ static void fsck_device(struct fs_info *fs, int interactive)
}
/*
- * Deal with the fsck -t argument.
- */
-static void compile_fs_type(char *fs_type)
-{
- char *cp, *list, *s;
- int num = 2;
- int negate;
-
- if (fs_type) {
- cp = fs_type;
- while ((cp = strchr(cp, ','))) {
- num++;
- cp++;
- }
- }
-
- fs_type_list = xzalloc(num * sizeof(fs_type_list[0]));
- fs_type_flag = xzalloc(num * sizeof(fs_type_flag[0]));
- fs_type_negated = -1;
-
- if (!fs_type)
- return;
-
- list = xstrdup(fs_type);
- num = 0;
- s = strtok(list, ",");
- while (s) {
- negate = 0;
- if (s[0] == 'n' && s[1] == 'o') { /* "no.." */
- s += 2;
- negate = 1;
- } else if (s[0] == '!') {
- s++;
- negate = 1;
- }
- if (strcmp(s, "loop") == 0)
- /* loop is really short-hand for opts=loop */
- goto loop_special_case;
- if (strncmp(s, "opts=", 5) == 0) {
- s += 5;
- loop_special_case:
- fs_type_flag[num] = negate ? FS_TYPE_FLAG_NEGOPT : FS_TYPE_FLAG_OPT;
- } else {
- if (fs_type_negated == -1)
- fs_type_negated = negate;
- if (fs_type_negated != negate)
- bb_error_msg_and_die(
-"Either all or none of the filesystem types passed to -t must be prefixed\n"
-"with 'no' or '!'.");
- }
- fs_type_list[num++] = xstrdup(s);
- s = strtok(NULL, ",");
- }
- free(list);
-}
-
-/*
* This function returns true if a particular option appears in a
* comma-delimited options list
*/
@@ -922,7 +864,7 @@ static int device_already_active(char *device)
* already active if there are any fsck instances running.
*/
if (!base)
- return (instance_list != 0);
+ return (instance_list != NULL);
for (inst = instance_list; inst; inst = inst->next) {
if (!inst->base_device || !strcmp(base, inst->base_device)) {
@@ -1047,9 +989,70 @@ static int check_all(void)
return status;
}
-static void signal_cancel(int sig ATTRIBUTE_UNUSED)
+/*
+ * Deal with the fsck -t argument.
+ * Huh, for mount "-t novfat,nfs" means "neither vfat nor nfs"!
+ * Why here we require "-t novfat,nonfs" ??
+ */
+static void compile_fs_type(char *fs_type)
{
- cancel_requested = 1;
+ char *s;
+ int num = 2;
+ smallint negate;
+
+ if (fs_type) {
+ 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;
+
+// list = xstrdup(fs_type);
+ num = 0;
+// s = strtok(list, ",");
+ s = fs_type;
+ while (1) {
+ char *comma;
+
+ negate = 0;
+ if (s[0] == 'n' && s[1] == 'o') { /* "no.." */
+ s += 2;
+ negate = 1;
+ } else if (s[0] == '!') {
+ s++;
+ negate = 1;
+ }
+ if (strcmp(s, "loop") == 0)
+ /* loop is really short-hand for opts=loop */
+ goto loop_special_case;
+ if (strncmp(s, "opts=", 5) == 0) {
+ s += 5;
+ loop_special_case:
+ fs_type_flag[num] = negate ? FS_TYPE_FLAG_NEGOPT : FS_TYPE_FLAG_OPT;
+ } else {
+ if (fs_type_negated == -1)
+ fs_type_negated = negate;
+ if (fs_type_negated != negate)
+ bb_error_msg_and_die(
+"either all or none of the filesystem types passed to -t must be prefixed "
+"with 'no' or '!'");
+ }
+ comma = strchr(s, ',');
+ fs_type_list[num++] = comma ? xstrndup(s, comma-s) : xstrdup(s);
+ if (!comma)
+ break;
+ s = comma + 1;
+// s = strtok(NULL, ",");
+ }
+// free(list);
}
static void parse_args(int argc, char *argv[])
@@ -1059,23 +1062,17 @@ static void parse_args(int argc, char *argv[])
char *options = NULL;
int optpos = 0;
int opts_for_fsck = 0;
- struct sigaction sa;
-
- /*
- * Set up signal action
- */
- memset(&sa, 0, sizeof(sa));
- sa.sa_handler = signal_cancel;
- sigaction(SIGINT, &sa, 0);
- sigaction(SIGTERM, &sa, 0);
+/* in bss
num_devices = 0;
num_args = 0;
- instance_list = 0;
+ instance_list = NULL;
+*/
/* TODO: getopt32 */
for (i = 1; i < argc; i++) {
arg = argv[i];
+ /* "/dev/blk" or "/path" or "UUID=xxx" or "LABEL=xxx" */
if ((arg[0] == '/' && !opts_for_fsck) || strchr(arg, '=')) {
#if 0
char *dev;
@@ -1095,7 +1092,7 @@ static void parse_args(int argc, char *argv[])
*/
if (geteuid())
bb_error_msg_and_die(
-"must be root to scan for matching filesystems: %s\n", arg);
+"must be root to scan for matching filesystems: %s", arg);
else
bb_error_msg_and_die(
"cannot find matching filesystem: %s", arg);
@@ -1103,6 +1100,8 @@ static void parse_args(int argc, char *argv[])
devices = xrealloc(devices, (num_devices+1) * sizeof(devices[0]));
devices[num_devices++] = dev ? dev : xstrdup(arg);
#endif
+// FIXME: must check that arg is a blkdev, or resolve
+// "/path", "UUID=xxx" or "LABEL=xxx" into block device name
devices = xrealloc(devices, (num_devices+1) * sizeof(devices[0]));
devices[num_devices++] = xstrdup(arg);
continue;
@@ -1197,12 +1196,26 @@ static void parse_args(int argc, char *argv[])
max_running = xatoi(tmp);
}
+static void signal_cancel(int sig ATTRIBUTE_UNUSED)
+{
+ cancel_requested = 1;
+}
+
int fsck_main(int argc, char *argv[])
{
int i, status = 0;
int interactive = 0;
const char *fstab;
struct fs_info *fs;
+ struct sigaction sa;
+
+ /*
+ * Set up signal action
+ */
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_handler = signal_cancel;
+ sigaction(SIGINT, &sa, 0);
+ sigaction(SIGTERM, &sa, 0);
setbuf(stdout, NULL);
/*setvbuf(stdout, NULL, _IONBF, BUFSIZ);*/
@@ -1214,6 +1227,8 @@ int fsck_main(int argc, char *argv[])
if (!notitle)
puts("fsck (busybox "BB_VER", "BB_BT")");
+ /* Even plain "fsck /dev/hda1" needs fstab to get fs type,
+ * so we are scanning it anyway */
fstab = getenv("FSTAB_FILE");
if (!fstab)
fstab = "/etc/fstab";