#define BLKGETSIZE _IO(0x12,96) /* return device size */
#endif
+struct BUG_bad_inode_size {
+ char BUG_bad_inode1_size[(INODE_SIZE1 * MINIX1_INODES_PER_BLOCK != BLOCK_SIZE) ? -1 : 1];
+#if ENABLE_FEATURE_MINIX2
+ char BUG_bad_inode2_size[(INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE) ? -1 : 1];
+#endif
+};
+
enum {
#ifdef UNUSED
MINIX1_LINK_MAX = 250,
MINIX_NAME_MAX = 255, /* # chars in a file name */
};
+
#if !ENABLE_FEATURE_MINIX2
enum { version2 = 0 };
#endif
#if ENABLE_FEATURE_MINIX2
smallint version2;
#endif
- smallint repair, automatic, verbose, list, show, warn_mode, force;
smallint changed; /* is filesystem modified? */
smallint errors_uncorrected; /* flag if some error was not corrected */
smallint termios_set;
smallint dirsize;
smallint namelen;
- char *device_name;
+ const char *device_name;
int directory, regular, blockdev, chardev, links, symlinks, total;
char *inode_buffer;
#if ENABLE_FEATURE_MINIX2
#define version2 (G.version2 )
#endif
-#define repair (G.repair )
-#define automatic (G.automatic )
-#define verbose (G.verbose )
-#define list (G.list )
-#define show (G.show )
-#define warn_mode (G.warn_mode )
-#define force (G.force )
#define changed (G.changed )
#define errors_uncorrected (G.errors_uncorrected )
#define termios_set (G.termios_set )
name_component[0] = ¤t_name[0]; \
} while (0)
+
+#define OPTION_STR "larvsmf"
+enum {
+ OPT_l = (1 << 0),
+ OPT_a = (1 << 1),
+ OPT_r = (1 << 2),
+ OPT_v = (1 << 3),
+ OPT_s = (1 << 4),
+ OPT_w = (1 << 5),
+ OPT_f = (1 << 6),
+};
+#define OPT_list (option_mask32 & OPT_l)
+#define OPT_automatic (option_mask32 & OPT_a)
+#define OPT_repair (option_mask32 & OPT_r)
+#define OPT_verbose (option_mask32 & OPT_v)
+#define OPT_show (option_mask32 & OPT_s)
+#define OPT_warn_mode (option_mask32 & OPT_w)
+#define OPT_force (option_mask32 & OPT_f)
+/* non-automatic repairs requested? */
+#define OPT_manual ((option_mask32 & (OPT_a|OPT_r)) == OPT_r)
+
+
#define Inode1 (((struct minix1_inode *) inode_buffer)-1)
#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
{
int c;
- if (!repair) {
+ if (!OPT_repair) {
bb_putchar('\n');
errors_uncorrected = 1;
return 0;
}
- if (automatic) {
+ if (OPT_automatic) {
bb_putchar('\n');
if (!def)
errors_uncorrected = 1;
/*
* read-block reads block nr into the buffer at addr.
*/
-static void read_block(unsigned nr, char *addr)
+static void read_block(unsigned nr, void *addr)
{
if (!nr) {
memset(addr, 0, BLOCK_SIZE);
return;
}
- if (BLOCK_SIZE * nr != lseek(dev_fd, BLOCK_SIZE * nr, SEEK_SET)) {
- printf("%s: cannot seek to block in file '%s'\n",
- bb_msg_read_error, current_name);
- errors_uncorrected = 1;
- memset(addr, 0, BLOCK_SIZE);
- } else if (BLOCK_SIZE != read(dev_fd, addr, BLOCK_SIZE)) {
- printf("%s: bad block in file '%s'\n",
- bb_msg_read_error, current_name);
+ xlseek(dev_fd, BLOCK_SIZE * nr, SEEK_SET);
+ if (BLOCK_SIZE != full_read(dev_fd, addr, BLOCK_SIZE)) {
+ printf("%s: bad block %u in file '%s'\n",
+ bb_msg_read_error, nr, current_name);
errors_uncorrected = 1;
memset(addr, 0, BLOCK_SIZE);
}
/*
* write_block writes block nr to disk.
*/
-static void write_block(unsigned nr, char *addr)
+static void write_block(unsigned nr, void *addr)
{
if (!nr)
return;
errors_uncorrected = 1;
return;
}
- if (BLOCK_SIZE * nr != lseek(dev_fd, BLOCK_SIZE * nr, SEEK_SET))
- die("seek failed in write_block");
- if (BLOCK_SIZE != write(dev_fd, addr, BLOCK_SIZE)) {
- printf("%s: bad block in file '%s'\n",
- bb_msg_write_error, current_name);
+ xlseek(dev_fd, BLOCK_SIZE * nr, SEEK_SET);
+ if (BLOCK_SIZE != full_write(dev_fd, addr, BLOCK_SIZE)) {
+ printf("%s: bad block %u in file '%s'\n",
+ bb_msg_write_error, nr, current_name);
errors_uncorrected = 1;
}
}
static int map_block(struct minix1_inode *inode, unsigned blknr)
{
uint16_t ind[BLOCK_SIZE >> 1];
- uint16_t dind[BLOCK_SIZE >> 1];
int block, result;
smallint blk_chg;
blknr -= 7;
if (blknr < 512) {
block = check_zone_nr(inode->i_zone + 7, &changed);
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr(blknr + ind, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
+ goto common;
}
blknr -= 512;
block = check_zone_nr(inode->i_zone + 8, &changed);
- read_block(block, (char *) dind);
+ read_block(block, ind); /* double indirect */
blk_chg = 0;
- result = check_zone_nr(dind + (blknr / 512), &blk_chg);
+ result = check_zone_nr(&ind[blknr / 512], &blk_chg);
if (blk_chg)
- write_block(block, (char *) dind);
+ write_block(block, ind);
block = result;
- read_block(block, (char *) ind);
+ common:
+ read_block(block, ind);
blk_chg = 0;
- result = check_zone_nr(ind + (blknr % 512), &blk_chg);
+ result = check_zone_nr(&ind[blknr % 512], &blk_chg);
if (blk_chg)
- write_block(block, (char *) ind);
+ write_block(block, ind);
return result;
}
static int map_block2(struct minix2_inode *inode, unsigned blknr)
{
uint32_t ind[BLOCK_SIZE >> 2];
- uint32_t dind[BLOCK_SIZE >> 2];
- uint32_t tind[BLOCK_SIZE >> 2];
int block, result;
smallint blk_chg;
blknr -= 7;
if (blknr < 256) {
block = check_zone_nr2(inode->i_zone + 7, &changed);
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr2(blknr + ind, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
+ goto common2;
}
blknr -= 256;
- if (blknr >= 256 * 256) {
+ if (blknr < 256 * 256) {
block = check_zone_nr2(inode->i_zone + 8, &changed);
- read_block(block, (char *) dind);
- blk_chg = 0;
- result = check_zone_nr2(dind + blknr / 256, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) dind);
- block = result;
- read_block(block, (char *) ind);
- blk_chg = 0;
- result = check_zone_nr2(ind + blknr % 256, &blk_chg);
- if (blk_chg)
- write_block(block, (char *) ind);
- return result;
+ goto common1;
}
blknr -= 256 * 256;
block = check_zone_nr2(inode->i_zone + 9, &changed);
- read_block(block, (char *) tind);
+ read_block(block, ind); /* triple indirect */
blk_chg = 0;
- result = check_zone_nr2(tind + blknr / (256 * 256), &blk_chg);
+ result = check_zone_nr2(&ind[blknr / (256 * 256)], &blk_chg);
if (blk_chg)
- write_block(block, (char *) tind);
+ write_block(block, ind);
block = result;
- read_block(block, (char *) dind);
+ common1:
+ read_block(block, ind); /* double indirect */
blk_chg = 0;
- result = check_zone_nr2(dind + (blknr / 256) % 256, &blk_chg);
+ result = check_zone_nr2(&ind[(blknr / 256) % 256], &blk_chg);
if (blk_chg)
- write_block(block, (char *) dind);
+ write_block(block, ind);
block = result;
- read_block(block, (char *) ind);
+ common2:
+ read_block(block, ind);
blk_chg = 0;
- result = check_zone_nr2(ind + blknr % 256, &blk_chg);
+ result = check_zone_nr2(&ind[blknr % 256], &blk_chg);
if (blk_chg)
- write_block(block, (char *) ind);
+ write_block(block, ind);
return result;
}
#endif
if (!errors_uncorrected)
Super.s_state &= ~MINIX_ERROR_FS;
- if (BLOCK_SIZE != lseek(dev_fd, BLOCK_SIZE, SEEK_SET))
- die("seek failed in write_super_block");
- if (BLOCK_SIZE != write(dev_fd, super_block_buffer, BLOCK_SIZE))
+ xlseek(dev_fd, BLOCK_SIZE, SEEK_SET);
+ if (BLOCK_SIZE != full_write(dev_fd, super_block_buffer, BLOCK_SIZE))
die("cannot write super-block");
}
static void read_superblock(void)
{
- if (BLOCK_SIZE != lseek(dev_fd, BLOCK_SIZE, SEEK_SET))
- die("seek failed");
- if (BLOCK_SIZE != read(dev_fd, super_block_buffer, BLOCK_SIZE))
+ xlseek(dev_fd, BLOCK_SIZE, SEEK_SET);
+ if (BLOCK_SIZE != full_read(dev_fd, super_block_buffer, BLOCK_SIZE))
die("cannot read super block");
/* already initialized to:
namelen = 14;
errors_uncorrected = 1;
}
get_dirsize();
- if (show) {
+ if (OPT_show) {
printf("%u inodes\n"
"%u blocks\n"
"Firstdatazone=%u (%u)\n"
}
}
-static struct minix1_inode *get_inode(unsigned nr)
+static void get_inode_common(unsigned nr, uint16_t i_mode)
{
- struct minix1_inode *inode;
-
- if (!nr || nr > INODES)
- return NULL;
total++;
- inode = Inode1 + nr;
if (!inode_count[nr]) {
if (!inode_in_use(nr)) {
printf("Inode %d is marked as 'unused', but it is used "
"for file '%s'\n", nr, current_name);
- if (repair) {
+ if (OPT_repair) {
if (ask("Mark as 'in use'", 1))
mark_inode(nr);
else
errors_uncorrected = 1;
}
}
- if (S_ISDIR(inode->i_mode))
+ if (S_ISDIR(i_mode))
directory++;
- else if (S_ISREG(inode->i_mode))
+ else if (S_ISREG(i_mode))
regular++;
- else if (S_ISCHR(inode->i_mode))
+ else if (S_ISCHR(i_mode))
chardev++;
- else if (S_ISBLK(inode->i_mode))
+ else if (S_ISBLK(i_mode))
blockdev++;
- else if (S_ISLNK(inode->i_mode))
+ else if (S_ISLNK(i_mode))
symlinks++;
- else if (S_ISSOCK(inode->i_mode));
- else if (S_ISFIFO(inode->i_mode));
+ else if (S_ISSOCK(i_mode));
+ else if (S_ISFIFO(i_mode));
else {
- printf("%s has mode %05o\n", current_name, inode->i_mode);
+ printf("%s has mode %05o\n", current_name, i_mode);
}
-
} else
links++;
if (!++inode_count[nr]) {
inode_count[nr]--;
errors_uncorrected = 1;
}
+}
+
+static struct minix1_inode *get_inode(unsigned nr)
+{
+ struct minix1_inode *inode;
+
+ if (!nr || nr > INODES)
+ return NULL;
+ inode = Inode1 + nr;
+ get_inode_common(nr, inode->i_mode);
return inode;
}
if (!nr || nr > INODES)
return NULL;
- total++;
inode = Inode2 + nr;
- if (!inode_count[nr]) {
- if (!inode_in_use(nr)) {
- printf("Inode %d is marked as 'unused', but it is used "
- "for file '%s'\n", nr, current_name);
- if (repair) {
- if (ask("Mark as 'in use'", 1))
- mark_inode(nr);
- else
- errors_uncorrected = 1;
- }
- }
- if (S_ISDIR(inode->i_mode))
- directory++;
- else if (S_ISREG(inode->i_mode))
- regular++;
- else if (S_ISCHR(inode->i_mode))
- chardev++;
- else if (S_ISBLK(inode->i_mode))
- blockdev++;
- else if (S_ISLNK(inode->i_mode))
- symlinks++;
- else if (S_ISSOCK(inode->i_mode));
- else if (S_ISFIFO(inode->i_mode));
- else {
- printf("%s has mode %05o\n", current_name, inode->i_mode);
- }
- } else
- links++;
- if (!++inode_count[nr]) {
- printf("Warning: inode count too big\n");
- inode_count[nr]--;
- errors_uncorrected = 1;
- }
+ get_inode_common(nr, inode->i_mode);
return inode;
}
#endif
void check_root2(void);
#endif
-static int add_zone(uint16_t *znr, smallint *corrected)
+static int add_zone_common(int block, smallint *corrected)
{
- int result;
- int block;
-
- result = 0;
- block = check_zone_nr(znr, corrected);
if (!block)
return 0;
if (zone_count[block]) {
printf("Already used block is reused in file '%s'. ",
current_name);
if (ask("Clear", 1)) {
- *znr = 0;
block = 0;
*corrected = 1;
- return 0;
+ return -1; /* "please zero out *znr" */
}
}
if (!zone_in_use(block)) {
return block;
}
+static int add_zone(uint16_t *znr, smallint *corrected)
+{
+ int block;
+
+ block = check_zone_nr(znr, corrected);
+ block = add_zone_common(block, corrected);
+ if (block == -1) {
+ *znr = 0;
+ block = 0;
+ }
+ return block;
+}
+
#if ENABLE_FEATURE_MINIX2
static int add_zone2(uint32_t *znr, smallint *corrected)
{
- int result;
int block;
- result = 0;
block = check_zone_nr2(znr, corrected);
- if (!block)
- return 0;
- if (zone_count[block]) {
- printf("Already used block is reused in file '%s'. ",
- current_name);
- if (ask("Clear", 1)) {
- *znr = 0;
- block = 0;
- *corrected = 1;
- return 0;
- }
- }
- if (!zone_in_use(block)) {
- printf("Block %d in file '%s' is marked as 'unused'. ",
- block, current_name);
- if (ask("Correct", 1))
- mark_zone(block);
+ block = add_zone_common(block, corrected);
+ if (block == -1) {
+ *znr = 0;
+ block = 0;
}
- if (!++zone_count[block])
- zone_count[block]--;
return block;
}
#endif
if (!inode)
return;
push_filename(name);
- if (list) {
- if (verbose)
+ if (OPT_list) {
+ if (OPT_verbose)
printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
printf("%s%s\n", current_name, S_ISDIR(inode->i_mode) ? ":" : "");
}
if (!inode)
return;
push_filename(name);
- if (list) {
- if (verbose)
+ if (OPT_list) {
+ if (OPT_verbose)
printf("%6d %07o %3d ", ino, inode->i_mode, inode->i_nlinks);
printf("%s%s\n", current_name, S_ISDIR(inode->i_mode) ? ":" : "");
}
{
char buffer[BLOCK_SIZE];
- if (BLOCK_SIZE * i != lseek(dev_fd, BLOCK_SIZE * i, SEEK_SET))
- die("seek failed in bad_zone");
- return (BLOCK_SIZE != read(dev_fd, buffer, BLOCK_SIZE));
+ xlseek(dev_fd, BLOCK_SIZE * i, SEEK_SET);
+ return (BLOCK_SIZE != full_read(dev_fd, buffer, BLOCK_SIZE));
}
static void check_counts(void)
int i;
for (i = 1; i <= INODES; i++) {
- if (warn_mode && Inode1[i].i_mode && !inode_in_use(i)) {
+ if (OPT_warn_mode && Inode1[i].i_mode && !inode_in_use(i)) {
printf("Inode %d has non-zero mode. ", i);
if (ask("Clear", 1)) {
Inode1[i].i_mode = 0;
int i;
for (i = 1; i <= INODES; i++) {
- if (warn_mode && Inode2[i].i_mode && !inode_in_use(i)) {
+ if (OPT_warn_mode && Inode2[i].i_mode && !inode_in_use(i)) {
printf("Inode %d has non-zero mode. ", i);
if (ask("Clear", 1)) {
Inode2[i].i_mode = 0;
INIT_G();
- if (INODE_SIZE1 * MINIX1_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad inode size");
-#if ENABLE_FEATURE_MINIX2
- if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
- die("bad v2 inode size");
-#endif
- while (--argc != 0) {
- argv++;
- if (argv[0][0] != '-') {
- if (device_name)
- bb_show_usage();
- device_name = argv[0];
- } else {
- while (*++argv[0]) {
- switch (argv[0][0]) {
- case 'l':
- list = 1;
- break;
- case 'a':
- automatic = 1;
- repair = 1;
- break;
- case 'r':
- automatic = 0;
- repair = 1;
- break;
- case 'v':
- verbose = 1;
- break;
- case 's':
- show = 1;
- break;
- case 'm':
- warn_mode = 1;
- break;
- case 'f':
- force = 1;
- break;
- default:
- bb_show_usage();
- }
- }
- }
- }
- if (!device_name)
- bb_show_usage();
+ opt_complementary = "=1:ar"; /* one argument; -a assumes -r */
+ getopt32(argv, OPTION_STR);
+ argv += optind;
+ device_name = argv[0];
- check_mount(); /* trying to check a mounted filesystem? */
- if (repair && !automatic) {
+ check_mount(); /* trying to check a mounted filesystem? */
+ if (OPT_manual) {
if (!isatty(0) || !isatty(1))
die("need terminal for interactive repairs");
}
- dev_fd = xopen(device_name, repair ? O_RDWR : O_RDONLY);
+ dev_fd = xopen(device_name, OPT_repair ? O_RDWR : O_RDONLY);
/*sync(); paranoia? */
read_superblock();
printf("%s: %s\n", applet_name, bb_banner);
if (!(Super.s_state & MINIX_ERROR_FS)
- && (Super.s_state & MINIX_VALID_FS) && !force
+ && (Super.s_state & MINIX_VALID_FS) && !OPT_force
) {
- if (repair)
+ if (OPT_repair)
printf("%s is clean, check is skipped\n", device_name);
return 0;
- } else if (force)
+ } else if (OPT_force)
printf("Forcing filesystem check on %s\n", device_name);
- else if (repair)
+ else if (OPT_repair)
printf("Filesystem on %s is dirty, needs checking\n",
device_name);
read_tables();
- if (repair && !automatic) {
+ if (OPT_manual) {
tcgetattr(0, &sv_termios);
tmp = sv_termios;
tmp.c_lflag &= ~(ICANON | ECHO);
check();
}
- if (verbose) {
+ if (OPT_verbose) {
int i, free_cnt;
for (i = 1, free_cnt = 0; i <= INODES; i++)
write_tables();
printf("FILE SYSTEM HAS BEEN CHANGED\n");
sync();
- } else if (repair)
+ } else if (OPT_repair)
write_super_block();
- if (repair && !automatic)
+ if (OPT_manual)
tcsetattr(0, TCSANOW, &sv_termios);
if (changed)
projects / oweals / busybox.git / commitdiff