#define UPPER(size,n) (((size)+((n)-1))/(n))
#define INODE_SIZE (sizeof(struct minix_inode))
-#ifdef CONFIG_FEATURE_MINIX2
-#define INODE_SIZE2 (sizeof(struct minix2_inode))
-#define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
+
+#if ENABLE_FEATURE_MINIX2
+# define INODE_SIZE2 (sizeof(struct minix2_inode))
+# define INODE_BLOCKS UPPER(INODES, (version2 ? MINIX2_INODES_PER_BLOCK \
: MINIX_INODES_PER_BLOCK))
#else
-#define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
+# define INODE_BLOCKS UPPER(INODES, (MINIX_INODES_PER_BLOCK))
#endif
+
#define INODE_BUFFER_SIZE (INODE_BLOCKS * BLOCK_SIZE)
#define BITS_PER_BLOCK (BLOCK_SIZE<<3)
static char *device_name;
static int DEV = -1;
static uint32_t BLOCKS;
-static int check;
static int badblocks;
-static int namelen = 30; /* default (changed to 30, per Linus's
-
- suggestion, Sun Nov 21 08:05:07 1993) */
+/* default (changed to 30, per Linus's suggestion, Sun Nov 21 08:05:07 1993) */
+static int namelen = 30;
static int dirsize = 32;
static int magic = MINIX_SUPER_MAGIC2;
+#if ENABLE_FEATURE_MINIX2
static int version2;
+#else
+enum { version2 = 0 };
+#endif
static char root_block[BLOCK_SIZE];
static char *inode_buffer;
#define Inode (((struct minix_inode *) inode_buffer)-1)
-#ifdef CONFIG_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
#define Inode2 (((struct minix2_inode *) inode_buffer)-1)
#endif
static char super_block_buffer[BLOCK_SIZE];
static char boot_block_buffer[512];
#define Super (*(struct minix_super_block *)super_block_buffer)
+
#define INODES (Super.s_ninodes)
-#ifdef CONFIG_FEATURE_MINIX2
-#define ZONES (version2 ? Super.s_zones : Super.s_nzones)
+#if ENABLE_FEATURE_MINIX2
+# define ZONES (version2 ? Super.s_zones : Super.s_nzones)
#else
-#define ZONES (Super.s_nzones)
+# define ZONES (Super.s_nzones)
#endif
+
#define IMAPS (Super.s_imap_blocks)
#define ZMAPS (Super.s_zmap_blocks)
#define FIRSTZONE (Super.s_firstdatazone)
static int used_good_blocks;
static unsigned long req_nr_inodes;
-static int bit(char * a,unsigned int i)
+static int bit(char* a, unsigned i)
{
return (a[i >> 3] & (1<<(i & 7))) != 0;
}
#define mark_zone(x) (setbit(zone_map,(x)-FIRSTZONE+1))
#define unmark_zone(x) (clrbit(zone_map,(x)-FIRSTZONE+1))
-/*
- * Check to make certain that our new filesystem won't be created on
- * an already mounted partition. Code adapted from mke2fs, Copyright
- * (C) 1994 Theodore Ts'o. Also licensed under GPL.
- */
-static void check_mount(void)
-{
- FILE *f;
- struct mntent *mnt;
-
- if ((f = setmntent(MOUNTED, "r")) == NULL)
- return;
- while ((mnt = getmntent(f)) != NULL)
- if (strcmp(device_name, mnt->mnt_fsname) == 0)
- break;
- endmntent(f);
- if (!mnt)
- return;
-
- bb_error_msg_and_die("%s is mounted; will not make a filesystem here!", device_name);
-}
-
static long valid_offset(int fd, int offset)
{
char ch;
- if (lseek(fd, offset, 0) < 0)
+ if (lseek(fd, offset, SEEK_SET) < 0)
return 0;
if (read(fd, &ch, 1) < 1)
return 0;
low = 0;
for (high = 1; valid_offset(fd, high); high *= 2)
low = high;
+
while (low < high - 1) {
const int mid = (low + high) / 2;
Super.s_state |= MINIX_VALID_FS;
Super.s_state &= ~MINIX_ERROR_FS;
- if (lseek(DEV, 0, SEEK_SET))
- bb_error_msg_and_die("seek to boot block failed in write_tables");
- if (512 != write(DEV, boot_block_buffer, 512))
- bb_error_msg_and_die("cannot clear boot sector");
- if (BLOCK_SIZE != lseek(DEV, BLOCK_SIZE, SEEK_SET))
- bb_error_msg_and_die("seek failed in write_tables");
- if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE))
- bb_error_msg_and_die("cannot write super-block");
- if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE))
- bb_error_msg_and_die("cannot write inode map");
- if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE))
- bb_error_msg_and_die("cannot write zone map");
- if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE))
- bb_error_msg_and_die("cannot write inodes");
+ msg_eol = "seek to 0 failed";
+ xlseek(DEV, 0, SEEK_SET);
+
+ msg_eol = "cannot clear boot sector";
+ xwrite(DEV, boot_block_buffer, 512);
+ msg_eol = "seek to BLOCK_SIZE failed";
+ xlseek(DEV, BLOCK_SIZE, SEEK_SET);
+
+ msg_eol = "cannot write superblock";
+ xwrite(DEV, super_block_buffer, BLOCK_SIZE);
+
+ msg_eol = "cannot write inode map";
+ xwrite(DEV, inode_map, IMAPS * BLOCK_SIZE);
+
+ msg_eol = "cannot write zone map";
+ xwrite(DEV, zone_map, ZMAPS * BLOCK_SIZE);
+
+ msg_eol = "cannot write inodes";
+ xwrite(DEV, inode_buffer, INODE_BUFFER_SIZE);
+
+ msg_eol = "\n";
}
static void write_block(int blk, char *buffer)
{
- if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET))
- bb_error_msg_and_die("seek failed in write_block");
- if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE))
- bb_error_msg_and_die("write failed in write_block");
+ xlseek(DEV, blk * BLOCK_SIZE, SEEK_SET);
+ xwrite(DEV, buffer, BLOCK_SIZE);
}
static int get_free_block(void)
return;
mark_inode(MINIX_BAD_INO);
inode->i_nlinks = 1;
+ /* BTW, setting this makes all images different */
+ /* it's harder to check for bugs then - diff isn't helpful :(... */
inode->i_time = time(NULL);
inode->i_mode = S_IFREG + 0000;
inode->i_size = badblocks * BLOCK_SIZE;
write_block(dind, (char *) dind_block);
}
-#ifdef CONFIG_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
static void make_bad_inode2(void)
{
struct minix2_inode *inode = &Inode2[MINIX_BAD_INO];
write_block(inode->i_zone[0], root_block);
}
-#ifdef CONFIG_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
static void make_root_inode2(void)
{
struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO];
MAGIC = magic;
ZONESIZE = 0;
MAXSIZE = version2 ? 0x7fffffff : (7 + 512 + 512 * 512) * 1024;
-#ifdef CONFIG_FEATURE_MINIX2
if (version2) {
Super.s_zones = BLOCKS;
} else
-#endif
Super.s_nzones = BLOCKS;
/* some magic nrs: 1 inode / 3 blocks */
else
inodes = req_nr_inodes;
/* Round up inode count to fill block size */
-#ifdef CONFIG_FEATURE_MINIX2
if (version2)
inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) &
~(MINIX2_INODES_PER_BLOCK - 1));
else
-#endif
inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) &
~(MINIX_INODES_PER_BLOCK - 1));
if (inodes > 65535)
* Perform a test of a block; return the number of
* blocks readable/writable.
*/
-static long do_check(char *buffer, int try, unsigned int current_block)
+static long do_check(char *buffer, int try, unsigned current_block)
{
long got;
/* Seek to the correct loc. */
- if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) !=
- current_block * BLOCK_SIZE) {
- bb_error_msg_and_die("seek failed during testing of blocks");
- }
-
+ msg_eol = "seek failed during testing of blocks";
+ xlseek(DEV, current_block * BLOCK_SIZE, SEEK_SET);
+ msg_eol = "\n";
/* Try the read */
got = read(DEV, buffer, try * BLOCK_SIZE);
return got;
}
-static unsigned int currently_testing;
+static unsigned currently_testing;
static void alarm_intr(int alnum)
{
signal(SIGALRM, alarm_intr);
alarm(5);
while (currently_testing < ZONES) {
- if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) !=
- currently_testing * BLOCK_SIZE)
- bb_error_msg_and_die("seek failed in check_blocks");
+ msg_eol = "seek failed in check_blocks";
+ xlseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET);
+ msg_eol = "\n";
try = TEST_BUFFER_BLOCKS;
if (currently_testing + try > ZONES)
try = ZONES - currently_testing;
badblocks++;
currently_testing++;
}
- if (badblocks > 1)
- printf("%d bad blocks\n", badblocks);
- else if (badblocks == 1)
- printf("one bad block\n");
+ printf("%d bad block(s)\n", badblocks);
}
static void get_list_blocks(char *filename)
mark_zone(blockno);
badblocks++;
}
- if (badblocks > 1)
- printf("%d bad blocks\n", badblocks);
- else if (badblocks == 1)
- printf("one bad block\n");
+ printf("%d bad block(s)\n", badblocks);
}
int mkfs_minix_main(int argc, char **argv)
{
- int i=1;
+ unsigned opt;
char *tmp;
struct stat statbuf;
+ char *str_i, *str_n;
char *listfile = NULL;
- int stopIt=FALSE;
if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE)
bb_error_msg_and_die("bad inode size");
-#ifdef CONFIG_FEATURE_MINIX2
+#if ENABLE_FEATURE_MINIX2
if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE)
bb_error_msg_and_die("bad inode size");
#endif
- /* Parse options */
- argv++;
- while (--argc >= 0 && *argv && **argv) {
- if (**argv == '-') {
- stopIt=FALSE;
- while (i > 0 && *++(*argv) && stopIt==FALSE) {
- switch (**argv) {
- case 'c':
- check = 1;
- break;
- case 'i':
- {
- char *cp=NULL;
- if (*(*argv+1) != 0) {
- cp = ++(*argv);
- } else {
- if (--argc == 0) {
- goto goodbye;
- }
- cp = *(++argv);
- }
- req_nr_inodes = strtoul(cp, &tmp, 0);
- if (*tmp)
- bb_show_usage();
- stopIt=TRUE;
- break;
- }
- case 'l':
- if (--argc == 0) {
- goto goodbye;
- }
- listfile = *(++argv);
- break;
- case 'n':
- {
- char *cp=NULL;
-
- if (*(*argv+1) != 0) {
- cp = ++(*argv);
- } else {
- if (--argc == 0) {
- goto goodbye;
- }
- cp = *(++argv);
- }
- i = strtoul(cp, &tmp, 0);
- if (*tmp)
- bb_show_usage();
- if (i == 14)
- magic = MINIX_SUPER_MAGIC;
- else if (i == 30)
- magic = MINIX_SUPER_MAGIC2;
- else
- bb_show_usage();
- namelen = i;
- dirsize = i + 2;
- stopIt=TRUE;
- break;
- }
- case 'v':
-#ifdef CONFIG_FEATURE_MINIX2
- version2 = 1;
+ opt = getopt32(argc, argv, "ci:l:n:v", &str_i, &listfile, &str_n);
+ argv += optind;
+ //if (opt & 1) -c
+ if (opt & 2) req_nr_inodes = xatoul(str_i); // -i
+ //if (opt & 4) -l
+ if (opt & 8) { // -n
+ namelen = xatoi_u(str_n);
+ if (namelen == 14) magic = MINIX_SUPER_MAGIC;
+ else if (namelen == 30) magic = MINIX_SUPER_MAGIC2;
+ else bb_show_usage();
+ dirsize = namelen + 2;
+ }
+ if (opt & 0x10) { // -v
+#if ENABLE_FEATURE_MINIX2
+ version2 = 1;
#else
- bb_error_msg("%s: not compiled with minix v2 support",
- device_name);
- exit(-1);
+ bb_error_msg_and_die("%s: not compiled with minix v2 support",
+ device_name);
#endif
- break;
- case '-':
- case 'h':
- default:
-goodbye:
- bb_show_usage();
- }
- }
- } else {
- if (device_name == NULL)
- device_name = *argv;
- else if (BLOCKS == 0)
- BLOCKS = strtol(*argv, &tmp, 0);
- else {
- goto goodbye;
- }
- }
- argv++;
}
- if (device_name && !BLOCKS)
- BLOCKS = get_size(device_name) / 1024;
- if (!device_name || BLOCKS < 10) {
+ device_name = *argv++;
+ if (!device_name)
bb_show_usage();
- }
-#ifdef CONFIG_FEATURE_MINIX2
+ if (*argv) {
+ BLOCKS = xatou32(*argv);
+ if (BLOCKS < 10)
+ bb_show_usage();
+ } else
+ BLOCKS = get_size(device_name) / 1024;
+
if (version2) {
+ magic = MINIX2_SUPER_MAGIC2;
if (namelen == 14)
magic = MINIX2_SUPER_MAGIC;
- else
- magic = MINIX2_SUPER_MAGIC2;
- } else
-#endif
- if (BLOCKS > 65535)
+ } else if (BLOCKS > 65535)
BLOCKS = 65535;
- check_mount(); /* is it already mounted? */
+
+ if (find_mount_point(device_name, NULL))
+ bb_error_msg_and_die("%s is mounted; refusing to make "
+ "a filesystem", device_name);
+
tmp = root_block;
*(short *) tmp = 1;
strcpy(tmp + 2, ".");
tmp += dirsize;
*(short *) tmp = 2;
strcpy(tmp + 2, ".badblocks");
+
DEV = xopen(device_name, O_RDWR);
if (fstat(DEV, &statbuf) < 0)
bb_error_msg_and_die("cannot stat %s", device_name);
if (!S_ISBLK(statbuf.st_mode))
- check = 0;
+ opt &= ~1; // clear -c (check)
else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340)
bb_error_msg_and_die("will not try to make filesystem on '%s'", device_name);
+
setup_tables();
- if (check)
+
+ if (opt & 1) // -c ?
check_blocks();
else if (listfile)
get_list_blocks(listfile);
-#ifdef CONFIG_FEATURE_MINIX2
+
if (version2) {
make_root_inode2();
make_bad_inode2();
- } else
-#endif
- {
+ } else {
make_root_inode();
make_bad_inode();
}
+
mark_good_blocks();
write_tables();
return 0;
-
}
OSDN Git Service
