diff options
Diffstat (limited to 'util-linux/mkfs_minix.c')
-rw-r--r-- | util-linux/mkfs_minix.c | 499 |
1 files changed, 257 insertions, 242 deletions
diff --git a/util-linux/mkfs_minix.c b/util-linux/mkfs_minix.c index b90d3a7..4435cb6 100644 --- a/util-linux/mkfs_minix.c +++ b/util-linux/mkfs_minix.c @@ -1,3 +1,4 @@ +/* vi: set sw=4 ts=4: */ /* * mkfs.c - make a linux (minix) file-system. * @@ -107,27 +108,30 @@ #define BITS_PER_BLOCK (BLOCK_SIZE<<3) -static char * program_name = "mkfs"; -static char * device_name = NULL; +static char *program_name = "mkfs"; +static char *device_name = NULL; static int DEV = -1; static long BLOCKS = 0; static int check = 0; static int badblocks = 0; -static int namelen = 30; /* default (changed to 30, per Linus's - suggestion, Sun Nov 21 08:05:07 1993) */ +static int namelen = 30; /* default (changed to 30, per Linus's + + suggestion, Sun Nov 21 08:05:07 1993) */ static int dirsize = 32; static int magic = MINIX_SUPER_MAGIC2; static int version2 = 0; static char root_block[BLOCK_SIZE] = "\0"; -static char * inode_buffer = NULL; +static char *inode_buffer = NULL; + #define Inode (((struct minix_inode *) inode_buffer)-1) #ifdef HAVE_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 ((unsigned long)Super.s_ninodes) #ifdef HAVE_MINIX2 @@ -164,21 +168,28 @@ static unsigned long req_nr_inodes = 0; * to compile this under minix, volatile gives a warning, as * exit() isn't defined as volatile under minix. */ -static volatile void die(char *str) { +static volatile void die(char *str) +{ fprintf(stderr, "%s: %s\n", program_name, str); exit(8); } static volatile void show_usage() { - fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n", BB_VER, BB_BT); - fprintf(stderr, "Usage: %s [-c | -l filename] [-nXX] [-iXX] /dev/name [blocks]\n\n", program_name); + fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n", + BB_VER, BB_BT); + fprintf(stderr, + "Usage: %s [-c | -l filename] [-nXX] [-iXX] /dev/name [blocks]\n\n", + program_name); fprintf(stderr, "Make a MINIX filesystem.\n\n"); fprintf(stderr, "OPTIONS:\n"); fprintf(stderr, "\t-c\t\tCheck the device for bad blocks\n"); - fprintf(stderr, "\t-n [14|30]\tSpecify the maximum length of filenames\n"); - fprintf(stderr, "\t-i\t\tSpecify the number of inodes for the filesystem\n"); - fprintf(stderr, "\t-l FILENAME\tRead the bad blocks list from FILENAME\n"); + fprintf(stderr, + "\t-n [14|30]\tSpecify the maximum length of filenames\n"); + fprintf(stderr, + "\t-i\t\tSpecify the number of inodes for the filesystem\n"); + fprintf(stderr, + "\t-l FILENAME\tRead the bad blocks list from FILENAME\n"); fprintf(stderr, "\t-v\t\tMake a Minix version 2 filesystem\n\n"); exit(16); } @@ -190,56 +201,55 @@ static volatile void show_usage() */ static void check_mount(void) { - FILE * f; - struct mntent * mnt; + FILE *f; + struct mntent *mnt; - if ((f = setmntent (MOUNTED, "r")) == NULL) + if ((f = setmntent(MOUNTED, "r")) == NULL) return; - while ((mnt = getmntent (f)) != NULL) - if (strcmp (device_name, mnt->mnt_fsname) == 0) + while ((mnt = getmntent(f)) != NULL) + if (strcmp(device_name, mnt->mnt_fsname) == 0) break; - endmntent (f); + endmntent(f); if (!mnt) return; die("%s is mounted; will not make a filesystem here!"); } -static long valid_offset (int fd, int offset) +static long valid_offset(int fd, int offset) { char ch; - if (lseek (fd, offset, 0) < 0) + if (lseek(fd, offset, 0) < 0) return 0; - if (read (fd, &ch, 1) < 1) + if (read(fd, &ch, 1) < 1) return 0; return 1; } -static int count_blocks (int fd) +static int count_blocks(int fd) { int high, low; low = 0; - for (high = 1; valid_offset (fd, high); high *= 2) + for (high = 1; valid_offset(fd, high); high *= 2) low = high; - while (low < high - 1) - { + while (low < high - 1) { const int mid = (low + high) / 2; - if (valid_offset (fd, mid)) + if (valid_offset(fd, mid)) low = mid; else high = mid; } - valid_offset (fd, 0); + valid_offset(fd, 0); return (low + 1); } -static int get_size(const char *file) +static int get_size(const char *file) { - int fd; - long size; + int fd; + long size; fd = open(file, O_RDWR); if (fd < 0) { @@ -250,7 +260,7 @@ static int get_size(const char *file) close(fd); return (size * 512); } - + size = count_blocks(fd); close(fd); return size; @@ -270,18 +280,18 @@ static void write_tables(void) die("seek failed in write_tables"); if (BLOCK_SIZE != write(DEV, super_block_buffer, BLOCK_SIZE)) die("unable to write super-block"); - if (IMAPS*BLOCK_SIZE != write(DEV,inode_map,IMAPS*BLOCK_SIZE)) + if (IMAPS * BLOCK_SIZE != write(DEV, inode_map, IMAPS * BLOCK_SIZE)) die("unable to write inode map"); - if (ZMAPS*BLOCK_SIZE != write(DEV,zone_map,ZMAPS*BLOCK_SIZE)) + if (ZMAPS * BLOCK_SIZE != write(DEV, zone_map, ZMAPS * BLOCK_SIZE)) die("unable to write zone map"); - if (INODE_BUFFER_SIZE != write(DEV,inode_buffer,INODE_BUFFER_SIZE)) + if (INODE_BUFFER_SIZE != write(DEV, inode_buffer, INODE_BUFFER_SIZE)) die("unable to write inodes"); - + } -static void write_block(int blk, char * buffer) +static void write_block(int blk, char *buffer) { - if (blk*BLOCK_SIZE != lseek(DEV, blk*BLOCK_SIZE, SEEK_SET)) + if (blk * BLOCK_SIZE != lseek(DEV, blk * BLOCK_SIZE, SEEK_SET)) die("seek failed in write_block"); if (BLOCK_SIZE != write(DEV, buffer, BLOCK_SIZE)) die("write failed in write_block"); @@ -291,10 +301,10 @@ static int get_free_block(void) { int blk; - if (used_good_blocks+1 >= MAX_GOOD_BLOCKS) + if (used_good_blocks + 1 >= MAX_GOOD_BLOCKS) die("too many bad blocks"); if (used_good_blocks) - blk = good_blocks_table[used_good_blocks-1]+1; + blk = good_blocks_table[used_good_blocks - 1] + 1; else blk = FIRSTZONE; while (blk < ZONES && zone_in_use(blk)) @@ -310,14 +320,14 @@ static void mark_good_blocks(void) { int blk; - for (blk=0 ; blk < used_good_blocks ; blk++) + for (blk = 0; blk < used_good_blocks; blk++) mark_zone(good_blocks_table[blk]); } inline int next(int zone) { if (!zone) - zone = FIRSTZONE-1; + zone = FIRSTZONE - 1; while (++zone < ZONES) if (zone_in_use(zone)) return zone; @@ -326,11 +336,11 @@ inline int next(int zone) static void make_bad_inode(void) { - struct minix_inode * inode = &Inode[MINIX_BAD_INO]; - int i,j,zone; - int ind=0,dind=0; - unsigned short ind_block[BLOCK_SIZE>>1]; - unsigned short dind_block[BLOCK_SIZE>>1]; + struct minix_inode *inode = &Inode[MINIX_BAD_INO]; + int i, j, zone; + int ind = 0, dind = 0; + unsigned short ind_block[BLOCK_SIZE >> 1]; + unsigned short dind_block[BLOCK_SIZE >> 1]; #define NEXT_BAD (zone = next(zone)) @@ -340,34 +350,34 @@ static void make_bad_inode(void) inode->i_nlinks = 1; inode->i_time = time(NULL); inode->i_mode = S_IFREG + 0000; - inode->i_size = badblocks*BLOCK_SIZE; + inode->i_size = badblocks * BLOCK_SIZE; zone = next(0); - for (i=0 ; i<7 ; i++) { + for (i = 0; i < 7; i++) { inode->i_zone[i] = zone; if (!NEXT_BAD) goto end_bad; } inode->i_zone[7] = ind = get_free_block(); - memset(ind_block,0,BLOCK_SIZE); - for (i=0 ; i<512 ; i++) { + memset(ind_block, 0, BLOCK_SIZE); + for (i = 0; i < 512; i++) { ind_block[i] = zone; if (!NEXT_BAD) goto end_bad; } inode->i_zone[8] = dind = get_free_block(); - memset(dind_block,0,BLOCK_SIZE); - for (i=0 ; i<512 ; i++) { - write_block(ind,(char *) ind_block); + memset(dind_block, 0, BLOCK_SIZE); + for (i = 0; i < 512; i++) { + write_block(ind, (char *) ind_block); dind_block[i] = ind = get_free_block(); - memset(ind_block,0,BLOCK_SIZE); - for (j=0 ; j<512 ; j++) { + memset(ind_block, 0, BLOCK_SIZE); + for (j = 0; j < 512; j++) { ind_block[j] = zone; if (!NEXT_BAD) goto end_bad; } } die("too many bad blocks"); -end_bad: + end_bad: if (ind) write_block(ind, (char *) ind_block); if (dind) @@ -375,8 +385,7 @@ end_bad: } #ifdef HAVE_MINIX2 -static void -make_bad_inode2 (void) +static void make_bad_inode2(void) { struct minix2_inode *inode = &Inode2[MINIX_BAD_INO]; int i, j, zone; @@ -386,30 +395,30 @@ make_bad_inode2 (void) if (!badblocks) return; - mark_inode (MINIX_BAD_INO); + mark_inode(MINIX_BAD_INO); inode->i_nlinks = 1; - inode->i_atime = inode->i_mtime = inode->i_ctime = time (NULL); + inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL); inode->i_mode = S_IFREG + 0000; inode->i_size = badblocks * BLOCK_SIZE; - zone = next (0); + zone = next(0); for (i = 0; i < 7; i++) { inode->i_zone[i] = zone; if (!NEXT_BAD) goto end_bad; } - inode->i_zone[7] = ind = get_free_block (); - memset (ind_block, 0, BLOCK_SIZE); + inode->i_zone[7] = ind = get_free_block(); + memset(ind_block, 0, BLOCK_SIZE); for (i = 0; i < 256; i++) { ind_block[i] = zone; if (!NEXT_BAD) goto end_bad; } - inode->i_zone[8] = dind = get_free_block (); - memset (dind_block, 0, BLOCK_SIZE); + inode->i_zone[8] = dind = get_free_block(); + memset(dind_block, 0, BLOCK_SIZE); for (i = 0; i < 256; i++) { - write_block (ind, (char *) ind_block); - dind_block[i] = ind = get_free_block (); - memset (ind_block, 0, BLOCK_SIZE); + write_block(ind, (char *) ind_block); + dind_block[i] = ind = get_free_block(); + memset(ind_block, 0, BLOCK_SIZE); for (j = 0; j < 256; j++) { ind_block[j] = zone; if (!NEXT_BAD) @@ -417,47 +426,46 @@ make_bad_inode2 (void) } } /* Could make triple indirect block here */ - die ("too many bad blocks"); - end_bad: + die("too many bad blocks"); + end_bad: if (ind) - write_block (ind, (char *) ind_block); + write_block(ind, (char *) ind_block); if (dind) - write_block (dind, (char *) dind_block); + write_block(dind, (char *) dind_block); } #endif static void make_root_inode(void) { - struct minix_inode * inode = &Inode[MINIX_ROOT_INO]; + struct minix_inode *inode = &Inode[MINIX_ROOT_INO]; mark_inode(MINIX_ROOT_INO); inode->i_zone[0] = get_free_block(); inode->i_nlinks = 2; inode->i_time = time(NULL); if (badblocks) - inode->i_size = 3*dirsize; + inode->i_size = 3 * dirsize; else { - root_block[2*dirsize] = '\0'; - root_block[2*dirsize+1] = '\0'; - inode->i_size = 2*dirsize; + root_block[2 * dirsize] = '\0'; + root_block[2 * dirsize + 1] = '\0'; + inode->i_size = 2 * dirsize; } inode->i_mode = S_IFDIR + 0755; inode->i_uid = getuid(); if (inode->i_uid) inode->i_gid = getgid(); - write_block(inode->i_zone[0],root_block); + write_block(inode->i_zone[0], root_block); } #ifdef HAVE_MINIX2 -static void -make_root_inode2 (void) +static void make_root_inode2(void) { struct minix2_inode *inode = &Inode2[MINIX_ROOT_INO]; - mark_inode (MINIX_ROOT_INO); - inode->i_zone[0] = get_free_block (); + mark_inode(MINIX_ROOT_INO); + inode->i_zone[0] = get_free_block(); inode->i_nlinks = 2; - inode->i_atime = inode->i_mtime = inode->i_ctime = time (NULL); + inode->i_atime = inode->i_mtime = inode->i_ctime = time(NULL); if (badblocks) inode->i_size = 3 * dirsize; else { @@ -469,7 +477,7 @@ make_root_inode2 (void) inode->i_uid = getuid(); if (inode->i_uid) inode->i_gid = getgid(); - write_block (inode->i_zone[0], root_block); + write_block(inode->i_zone[0], root_block); } #endif @@ -478,34 +486,38 @@ static void setup_tables(void) int i; unsigned long inodes; - memset(super_block_buffer,0,BLOCK_SIZE); - memset(boot_block_buffer,0,512); + memset(super_block_buffer, 0, BLOCK_SIZE); + memset(boot_block_buffer, 0, 512); MAGIC = magic; ZONESIZE = 0; - MAXSIZE = version2 ? 0x7fffffff : (7+512+512*512)*1024; + MAXSIZE = version2 ? 0x7fffffff : (7 + 512 + 512 * 512) * 1024; ZONES = BLOCKS; /* some magic nrs: 1 inode / 3 blocks */ - if ( req_nr_inodes == 0 ) - inodes = BLOCKS/3; + if (req_nr_inodes == 0) + inodes = BLOCKS / 3; else inodes = req_nr_inodes; /* Round up inode count to fill block size */ #ifdef HAVE_MINIX2 if (version2) inodes = ((inodes + MINIX2_INODES_PER_BLOCK - 1) & - ~(MINIX2_INODES_PER_BLOCK - 1)); + ~(MINIX2_INODES_PER_BLOCK - 1)); else #endif inodes = ((inodes + MINIX_INODES_PER_BLOCK - 1) & - ~(MINIX_INODES_PER_BLOCK - 1)); + ~(MINIX_INODES_PER_BLOCK - 1)); if (inodes > 65535) inodes = 65535; INODES = inodes; - IMAPS = UPPER(INODES + 1,BITS_PER_BLOCK); + IMAPS = UPPER(INODES + 1, BITS_PER_BLOCK); ZMAPS = 0; - i=0; - while (ZMAPS != UPPER(BLOCKS - (2+IMAPS+ZMAPS+INODE_BLOCKS) + 1,BITS_PER_BLOCK) && i<1000) { - ZMAPS = UPPER(BLOCKS - (2+IMAPS+ZMAPS+INODE_BLOCKS) + 1,BITS_PER_BLOCK); + i = 0; + while (ZMAPS != + UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1, + BITS_PER_BLOCK) && i < 1000) { + ZMAPS = + UPPER(BLOCKS - (2 + IMAPS + ZMAPS + INODE_BLOCKS) + 1, + BITS_PER_BLOCK); i++; } /* Real bad hack but overwise mkfs.minix can be thrown @@ -514,50 +526,51 @@ static void setup_tables(void) * dd if=/dev/zero of=test.fs count=10 bs=1024 * /sbin/mkfs.minix -i 200 test.fs * */ - if (i>=999) { - die ("unable to allocate buffers for maps"); + if (i >= 999) { + die("unable to allocate buffers for maps"); } FIRSTZONE = NORM_FIRSTZONE; inode_map = malloc(IMAPS * BLOCK_SIZE); zone_map = malloc(ZMAPS * BLOCK_SIZE); if (!inode_map || !zone_map) die("unable to allocate buffers for maps"); - memset(inode_map,0xff,IMAPS * BLOCK_SIZE); - memset(zone_map,0xff,ZMAPS * BLOCK_SIZE); - for (i = FIRSTZONE ; i<ZONES ; i++) + memset(inode_map, 0xff, IMAPS * BLOCK_SIZE); + memset(zone_map, 0xff, ZMAPS * BLOCK_SIZE); + for (i = FIRSTZONE; i < ZONES; i++) unmark_zone(i); - for (i = MINIX_ROOT_INO ; i<=INODES ; i++) + for (i = MINIX_ROOT_INO; i <= INODES; i++) unmark_inode(i); inode_buffer = malloc(INODE_BUFFER_SIZE); if (!inode_buffer) die("unable to allocate buffer for inodes"); - memset(inode_buffer,0,INODE_BUFFER_SIZE); - printf("%ld inodes\n",INODES); - printf("%ld blocks\n",ZONES); - printf("Firstdatazone=%ld (%ld)\n",FIRSTZONE,NORM_FIRSTZONE); - printf("Zonesize=%d\n",BLOCK_SIZE<<ZONESIZE); - printf("Maxsize=%ld\n\n",MAXSIZE); + memset(inode_buffer, 0, INODE_BUFFER_SIZE); + printf("%ld inodes\n", INODES); + printf("%ld blocks\n", ZONES); + printf("Firstdatazone=%ld (%ld)\n", FIRSTZONE, NORM_FIRSTZONE); + printf("Zonesize=%d\n", BLOCK_SIZE << ZONESIZE); + printf("Maxsize=%ld\n\n", MAXSIZE); } /* * Perform a test of a block; return the number of * blocks readable/writeable. */ -long do_check(char * buffer, int try, unsigned int current_block) +long do_check(char *buffer, int try, unsigned int current_block) { long got; - + /* Seek to the correct loc. */ if (lseek(DEV, current_block * BLOCK_SIZE, SEEK_SET) != - current_block * BLOCK_SIZE ) { - die("seek failed during testing of blocks"); + current_block * BLOCK_SIZE) { + die("seek failed during testing of blocks"); } /* Try the read */ got = read(DEV, buffer, try * BLOCK_SIZE); - if (got < 0) got = 0; - if (got & (BLOCK_SIZE - 1 )) { + if (got < 0) + got = 0; + if (got & (BLOCK_SIZE - 1)) { printf("Weird values in do_check: probably bugs\n"); } got /= BLOCK_SIZE; @@ -570,7 +583,7 @@ static void alarm_intr(int alnum) { if (currently_testing >= ZONES) return; - signal(SIGALRM,alarm_intr); + signal(SIGALRM, alarm_intr); alarm(5); if (!currently_testing) return; @@ -580,19 +593,19 @@ static void alarm_intr(int alnum) static void check_blocks(void) { - int try,got; + int try, got; static char buffer[BLOCK_SIZE * TEST_BUFFER_BLOCKS]; - currently_testing=0; - signal(SIGALRM,alarm_intr); + currently_testing = 0; + signal(SIGALRM, alarm_intr); alarm(5); while (currently_testing < ZONES) { - if (lseek(DEV,currently_testing*BLOCK_SIZE,SEEK_SET) != - currently_testing*BLOCK_SIZE) + if (lseek(DEV, currently_testing * BLOCK_SIZE, SEEK_SET) != + currently_testing * BLOCK_SIZE) die("seek failed in check_blocks"); try = TEST_BUFFER_BLOCKS; if (currently_testing + try > ZONES) - try = ZONES-currently_testing; + try = ZONES - currently_testing; got = do_check(buffer, try, currently_testing); currently_testing += got; if (got == try) @@ -613,139 +626,141 @@ static void get_list_blocks(filename) char *filename; { - FILE *listfile; - unsigned long blockno; - - listfile=fopen(filename,"r"); - if(listfile == (FILE *)NULL) { - die("can't open file of bad blocks"); - } - while(!feof(listfile)) { - fscanf(listfile,"%ld\n", &blockno); - mark_zone(blockno); - badblocks++; - } - if(badblocks > 1) - printf("%d bad blocks\n", badblocks); - else if (badblocks == 1) - printf("one bad block\n"); + FILE *listfile; + unsigned long blockno; + + listfile = fopen(filename, "r"); + if (listfile == (FILE *) NULL) { + die("can't open file of bad blocks"); + } + while (!feof(listfile)) { + fscanf(listfile, "%ld\n", &blockno); + mark_zone(blockno); + badblocks++; + } + if (badblocks > 1) + printf("%d bad blocks\n", badblocks); + else if (badblocks == 1) + printf("one bad block\n"); } -extern int -mkfs_minix_main(int argc, char ** argv) +extern int mkfs_minix_main(int argc, char **argv) { - int i; - char * tmp; - struct stat statbuf; - char * listfile = NULL; - - if (argc && *argv) - program_name = *argv; - if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE) - die("bad inode size"); + int i; + char *tmp; + struct stat statbuf; + char *listfile = NULL; + + if (argc && *argv) + program_name = *argv; + if (INODE_SIZE * MINIX_INODES_PER_BLOCK != BLOCK_SIZE) + die("bad inode size"); #ifdef HAVE_MINIX2 - if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE) - die("bad inode size"); + if (INODE_SIZE2 * MINIX2_INODES_PER_BLOCK != BLOCK_SIZE) + die("bad inode size"); #endif - opterr = 0; - while ((i = getopt(argc, argv, "ci:l:n:v")) != EOF) - switch (i) { - case 'c': - check=1; break; - case 'i': - req_nr_inodes = (unsigned long) atol(optarg); - break; - case 'l': - listfile = optarg; break; - case 'n': - i = strtoul(optarg,&tmp,0); - if (*tmp) - show_usage(); - if (i == 14) - magic = MINIX_SUPER_MAGIC; - else if (i == 30) - magic = MINIX_SUPER_MAGIC2; - else - show_usage(); - namelen = i; - dirsize = i+2; - break; - case 'v': + opterr = 0; + while ((i = getopt(argc, argv, "ci:l:n:v")) != EOF) + switch (i) { + case 'c': + check = 1; + break; + case 'i': + req_nr_inodes = (unsigned long) atol(optarg); + break; + case 'l': + listfile = optarg; + break; + case 'n': + i = strtoul(optarg, &tmp, 0); + if (*tmp) + show_usage(); + if (i == 14) + magic = MINIX_SUPER_MAGIC; + else if (i == 30) + magic = MINIX_SUPER_MAGIC2; + else + show_usage(); + namelen = i; + dirsize = i + 2; + break; + case 'v': #ifdef HAVE_MINIX2 - version2 = 1; + version2 = 1; #else - fprintf(stderr,"%s: not compiled with minix v2 support\n",program_name,device_name); - exit(-1); + fprintf(stderr, "%s: not compiled with minix v2 support\n", + program_name, device_name); + exit(-1); #endif - break; - default: - show_usage(); - } - argc -= optind; - argv += optind; - if (argc > 0 && !device_name) { - device_name = argv[0]; - argc--; - argv++; - } - if (argc > 0) { - BLOCKS = strtol(argv[0],&tmp,0); - if (*tmp) { - printf("strtol error: number of blocks not specified"); - show_usage(); - } - } - - if (device_name && !BLOCKS) - BLOCKS = get_size (device_name) / 1024; - if (!device_name || BLOCKS<10) { - show_usage(); - } + break; + default: + show_usage(); + } + argc -= optind; + argv += optind; + if (argc > 0 && !device_name) { + device_name = argv[0]; + argc--; + argv++; + } + if (argc > 0) { + BLOCKS = strtol(argv[0], &tmp, 0); + if (*tmp) { + printf("strtol error: number of blocks not specified"); + show_usage(); + } + } + + if (device_name && !BLOCKS) + BLOCKS = get_size(device_name) / 1024; + if (!device_name || BLOCKS < 10) { + show_usage(); + } #ifdef HAVE_MINIX2 - if (version2) { - if (namelen == 14) - magic = MINIX2_SUPER_MAGIC; - else - magic = MINIX2_SUPER_MAGIC2; - } else + if (version2) { + if (namelen == 14) + magic = MINIX2_SUPER_MAGIC; + else + magic = MINIX2_SUPER_MAGIC2; + } else #endif - if (BLOCKS > 65535) - BLOCKS = 65535; - check_mount(); /* is it already mounted? */ - tmp = root_block; - *(short *)tmp = 1; - strcpy(tmp+2,"."); - tmp += dirsize; - *(short *)tmp = 1; - strcpy(tmp+2,".."); - tmp += dirsize; - *(short *)tmp = 2; - strcpy(tmp+2,".badblocks"); - DEV = open(device_name,O_RDWR ); - if (DEV<0) - die("unable to open %s"); - if (fstat(DEV,&statbuf)<0) - die("unable to stat %s"); - if (!S_ISBLK(statbuf.st_mode)) - check=0; - else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340) - die("will not try to make filesystem on '%s'"); - setup_tables(); - if (check) - check_blocks(); - else if (listfile) - get_list_blocks(listfile); + if (BLOCKS > 65535) + BLOCKS = 65535; + check_mount(); /* is it already mounted? */ + tmp = root_block; + *(short *) tmp = 1; + strcpy(tmp + 2, "."); + tmp += dirsize; + *(short *) tmp = 1; + strcpy(tmp + 2, ".."); + tmp += dirsize; + *(short *) tmp = 2; + strcpy(tmp + 2, ".badblocks"); + DEV = open(device_name, O_RDWR); + if (DEV < 0) + die("unable to open %s"); + if (fstat(DEV, &statbuf) < 0) + die("unable to stat %s"); + if (!S_ISBLK(statbuf.st_mode)) + check = 0; + else if (statbuf.st_rdev == 0x0300 || statbuf.st_rdev == 0x0340) + die("will not try to make filesystem on '%s'"); + setup_tables(); + if (check) + check_blocks(); + else if (listfile) + get_list_blocks(listfile); #ifdef HAVE_MINIX2 - if (version2) { - make_root_inode2 (); - make_bad_inode2 (); - } else + if (version2) { + make_root_inode2(); + make_bad_inode2(); + } else #endif - { - make_root_inode(); - make_bad_inode(); - } - mark_good_blocks(); - write_tables(); - return 0; + { + make_root_inode(); + make_bad_inode(); + } + mark_good_blocks(); + write_tables(); + return 0; } |