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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-03-17 08:59:19 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-03-17 08:59:19 +0000
commita55bd05f3cea6c7cbfb45d15009cb70570c2a43b (patch)
treef156fc43098bb02d6108c61534df3da407dd9959 /e2fsprogs
parent397de617f38a58ca4659ee348faf1df574b3ec8d (diff)
downloadbusybox-a55bd05f3cea6c7cbfb45d15009cb70570c2a43b.tar.gz
busybox-a55bd05f3cea6c7cbfb45d15009cb70570c2a43b.tar.bz2
fsck: shrink (we were passing around some params which were unused)
function old new delta fsck_main 1807 2256 +449 fsck_device 196 189 -7 create_fs_device 131 124 -7 wait_one 325 309 -16 wait_many 52 33 -19 free_instance 38 - -38 packed_usage 23698 23650 -48 execute 2508 2402 -106 check_all 609 - -609 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 1/6 up/down: 449/-850) Total: -401 bytes text data bss dec hex filename 797604 658 7428 805690 c4b3a busybox_old 797195 658 7428 805281 c49a1 busybox_unstripped
Diffstat (limited to 'e2fsprogs')
-rw-r--r--e2fsprogs/fsck.c237
1 files changed, 100 insertions, 137 deletions
diff --git a/e2fsprogs/fsck.c b/e2fsprogs/fsck.c
index 037a563f4..6769a7237 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("----------------------------------");
}