| /* |
| * cramfsck - check a cramfs file system |
| * |
| * Copyright (C) 2000-2002 Transmeta Corporation |
| * 2005 Adrian Bunk |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * 1999/12/03: Linus Torvalds (cramfs tester and unarchive program) |
| * 2000/06/03: Daniel Quinlan (CRC and length checking program) |
| * 2000/06/04: Daniel Quinlan (merged programs, added options, support |
| * for special files, preserve permissions and |
| * ownership, cramfs superblock v2, bogus mode |
| * test, pathname length test, etc.) |
| * 2000/06/06: Daniel Quinlan (support for holes, pretty-printing, |
| * symlink size test) |
| * 2000/07/11: Daniel Quinlan (file length tests, start at offset 0 or 512, |
| * fsck-compatible exit codes) |
| * 2000/07/15: Daniel Quinlan (initial support for block devices) |
| * 2002/01/10: Daniel Quinlan (additional checks, test more return codes, |
| * use read if mmap fails, standardize messages) |
| */ |
| |
| #include <stdio.h> |
| #include <stdarg.h> |
| #include <stdint.h> |
| #include <unistd.h> |
| #include <dirent.h> |
| #include <stdlib.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <getopt.h> |
| #include <utime.h> |
| #include <fcntl.h> |
| |
| /* We don't use our include/crc32.h, but crc32 from zlib! |
| * |
| * The zlib implementation performs pre/post-conditioning. The util-linux |
| * imlemenation requires post-conditioning (xor) in the applications. |
| */ |
| #include <zlib.h> |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <sys/mman.h> |
| |
| #include "c.h" |
| #include "cramfs.h" |
| #include "nls.h" |
| #include "blkdev.h" |
| #include "exitcodes.h" |
| #include "strutils.h" |
| #include "closestream.h" |
| |
| #define XALLOC_EXIT_CODE FSCK_EX_ERROR |
| #include "xalloc.h" |
| |
| static int fd; /* ROM image file descriptor */ |
| static char *filename; /* ROM image filename */ |
| static struct cramfs_super super; /* just find the cramfs superblock once */ |
| static int cramfs_is_big_endian = 0; /* source is big endian */ |
| static int opt_verbose = 0; /* 1 = verbose (-v), 2+ = very verbose (-vv) */ |
| static int opt_extract = 0; /* extract cramfs (-x) */ |
| static char *extract_dir = ""; /* optional extraction directory (-x) */ |
| |
| #define PAD_SIZE 512 |
| |
| static uid_t euid; /* effective UID */ |
| |
| /* (cramfs_super + start) <= start_dir < end_dir <= start_data <= end_data */ |
| static unsigned long start_dir = ~0UL; /* start of first non-root inode */ |
| static unsigned long end_dir = 0; /* end of the directory structure */ |
| static unsigned long start_data = ~0UL; /* start of the data (256 MB = max) */ |
| static unsigned long end_data = 0; /* end of the data */ |
| |
| |
| /* Guarantee access to at least 8kB at a time */ |
| #define ROMBUFFER_BITS 13 |
| #define ROMBUFFERSIZE (1 << ROMBUFFER_BITS) |
| #define ROMBUFFERMASK (ROMBUFFERSIZE - 1) |
| static char read_buffer[ROMBUFFERSIZE * 2]; |
| static unsigned long read_buffer_block = ~0UL; |
| |
| static z_stream stream; |
| |
| /* Prototypes */ |
| static void expand_fs(char *, struct cramfs_inode *); |
| |
| static char *outbuffer; |
| |
| static size_t blksize = 0; |
| |
| static void __attribute__((__noreturn__)) usage(void) |
| { |
| FILE *out = stdout; |
| |
| fputs(USAGE_HEADER, out); |
| fprintf(out, |
| _(" %s [options] <file>\n"), program_invocation_short_name); |
| |
| fputs(USAGE_SEPARATOR, out); |
| fputs(_("Check and repair a compressed ROM filesystem.\n"), out); |
| |
| fputs(USAGE_OPTIONS, out); |
| fputs(_(" -a for compatibility only, ignored\n"), out); |
| fputs(_(" -v, --verbose be more verbose\n"), out); |
| fputs(_(" -y for compatibility only, ignored\n"), out); |
| fputs(_(" -b, --blocksize <size> use this blocksize, defaults to page size\n"), out); |
| fputs(_(" --extract[=<dir>] test uncompression, optionally extract into <dir>\n"), out); |
| fputs(USAGE_SEPARATOR, out); |
| printf(USAGE_HELP_OPTIONS(26)); |
| |
| printf(USAGE_MAN_TAIL("fsck.cramfs(8)")); |
| exit(FSCK_EX_OK); |
| } |
| |
| static int get_superblock_endianness(uint32_t magic) |
| { |
| if (magic == CRAMFS_MAGIC) { |
| cramfs_is_big_endian = HOST_IS_BIG_ENDIAN; |
| return 0; |
| } else if (magic == |
| u32_toggle_endianness(!HOST_IS_BIG_ENDIAN, CRAMFS_MAGIC)) { |
| cramfs_is_big_endian = !HOST_IS_BIG_ENDIAN; |
| return 0; |
| } else |
| return -1; |
| } |
| |
| static void test_super(int *start, size_t * length) |
| { |
| struct stat st; |
| |
| /* find the physical size of the file or block device */ |
| if (stat(filename, &st) < 0) |
| err(FSCK_EX_ERROR, _("stat of %s failed"), filename); |
| |
| fd = open(filename, O_RDONLY); |
| if (fd < 0) |
| err(FSCK_EX_ERROR, _("cannot open %s"), filename); |
| |
| if (S_ISBLK(st.st_mode)) { |
| unsigned long long bytes; |
| if (blkdev_get_size(fd, &bytes)) |
| err(FSCK_EX_ERROR, |
| _("ioctl failed: unable to determine device size: %s"), |
| filename); |
| *length = bytes; |
| } else if (S_ISREG(st.st_mode)) |
| *length = st.st_size; |
| else |
| errx(FSCK_EX_ERROR, _("not a block device or file: %s"), filename); |
| |
| if (*length < sizeof(struct cramfs_super)) |
| errx(FSCK_EX_UNCORRECTED, _("file length too short")); |
| |
| /* find superblock */ |
| if (read(fd, &super, sizeof(super)) != sizeof(super)) |
| err(FSCK_EX_ERROR, _("cannot read %s"), filename); |
| if (get_superblock_endianness(super.magic) != -1) |
| *start = 0; |
| else if (*length >= (PAD_SIZE + sizeof(super))) { |
| if (lseek(fd, PAD_SIZE, SEEK_SET) == (off_t) -1) |
| err(FSCK_EX_ERROR, _("seek on %s failed"), filename); |
| if (read(fd, &super, sizeof(super)) != sizeof(super)) |
| err(FSCK_EX_ERROR, _("cannot read %s"), filename); |
| if (get_superblock_endianness(super.magic) != -1) |
| *start = PAD_SIZE; |
| else |
| errx(FSCK_EX_UNCORRECTED, _("superblock magic not found")); |
| } else |
| errx(FSCK_EX_UNCORRECTED, _("superblock magic not found")); |
| |
| if (opt_verbose) |
| printf(_("cramfs endianness is %s\n"), |
| cramfs_is_big_endian ? _("big") : _("little")); |
| |
| super_toggle_endianness(cramfs_is_big_endian, &super); |
| if (super.flags & ~CRAMFS_SUPPORTED_FLAGS) |
| errx(FSCK_EX_ERROR, _("unsupported filesystem features")); |
| |
| /* What are valid superblock sizes? */ |
| if (super.size < *start + sizeof(struct cramfs_super)) |
| errx(FSCK_EX_UNCORRECTED, _("superblock size (%d) too small"), |
| super.size); |
| |
| if (super.flags & CRAMFS_FLAG_FSID_VERSION_2) { |
| if (super.fsid.files == 0) |
| errx(FSCK_EX_UNCORRECTED, _("zero file count")); |
| if (*length < super.size) |
| errx(FSCK_EX_UNCORRECTED, _("file length too short")); |
| else if (*length > super.size) |
| warnx(_("file extends past end of filesystem")); |
| } else |
| warnx(_("old cramfs format")); |
| } |
| |
| static void test_crc(int start) |
| { |
| void *buf; |
| uint32_t crc; |
| |
| if (!(super.flags & CRAMFS_FLAG_FSID_VERSION_2)) { |
| warnx(_("unable to test CRC: old cramfs format")); |
| return; |
| } |
| |
| crc = crc32(0L, NULL, 0); |
| |
| buf = |
| mmap(NULL, super.size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); |
| if (buf == MAP_FAILED) { |
| buf = |
| mmap(NULL, super.size, PROT_READ | PROT_WRITE, |
| MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| if (buf != MAP_FAILED) { |
| ssize_t tmp; |
| if (lseek(fd, 0, SEEK_SET) == (off_t) -1) |
| err(FSCK_EX_ERROR, _("seek on %s failed"), filename); |
| tmp = read(fd, buf, super.size); |
| if (tmp < 0) |
| err(FSCK_EX_ERROR, _("cannot read %s"), filename); |
| if (tmp != (ssize_t) super.size) |
| errx(FSCK_EX_ERROR, _("failed to read %"PRIu32" bytes from file %s"), |
| super.size, filename); |
| } |
| } |
| if (buf != MAP_FAILED) { |
| ((struct cramfs_super *)((unsigned char *) buf + start))->fsid.crc = |
| crc32(0L, NULL, 0); |
| crc = crc32(crc, (unsigned char *) buf + start, super.size - start); |
| munmap(buf, super.size); |
| } else { |
| int retval; |
| size_t length = 0; |
| |
| buf = xmalloc(4096); |
| if (lseek(fd, start, SEEK_SET) == (off_t) -1) |
| err(FSCK_EX_ERROR, _("seek on %s failed"), filename); |
| for (;;) { |
| retval = read(fd, buf, 4096); |
| if (retval < 0) |
| err(FSCK_EX_ERROR, _("cannot read %s"), filename); |
| else if (retval == 0) |
| break; |
| if (length == 0) |
| ((struct cramfs_super *)buf)->fsid.crc = |
| crc32(0L, NULL, 0); |
| length += retval; |
| if (length > (super.size - start)) { |
| crc = crc32(crc, buf, |
| retval - (length - |
| (super.size - start))); |
| break; |
| } |
| crc = crc32(crc, buf, retval); |
| } |
| free(buf); |
| } |
| |
| if (crc != super.fsid.crc) |
| errx(FSCK_EX_UNCORRECTED, _("crc error")); |
| } |
| |
| static void print_node(char type, struct cramfs_inode *i, char *name) |
| { |
| char info[10]; |
| |
| if (S_ISCHR(i->mode) || (S_ISBLK(i->mode))) |
| /* major/minor numbers can be as high as 2^12 or 4096 */ |
| snprintf(info, 10, "%4d,%4d", major(i->size), minor(i->size)); |
| else |
| /* size be as high as 2^24 or 16777216 */ |
| snprintf(info, 10, "%9d", i->size); |
| |
| printf("%c %04o %s %5d:%-3d %s\n", |
| type, i->mode & ~S_IFMT, info, i->uid, i->gid, |
| !*name && type == 'd' ? "/" : name); |
| } |
| |
| /* |
| * Create a fake "blocked" access |
| */ |
| static void *romfs_read(unsigned long offset) |
| { |
| unsigned int block = offset >> ROMBUFFER_BITS; |
| if (block != read_buffer_block) { |
| ssize_t x; |
| |
| read_buffer_block = block; |
| if (lseek(fd, block << ROMBUFFER_BITS, SEEK_SET) == (off_t) -1) |
| warn(_("seek failed")); |
| |
| x = read(fd, read_buffer, ROMBUFFERSIZE * 2); |
| if (x < 0) |
| warn(_("read romfs failed")); |
| } |
| return read_buffer + (offset & ROMBUFFERMASK); |
| } |
| |
| static struct cramfs_inode *cramfs_iget(struct cramfs_inode *i) |
| { |
| struct cramfs_inode *inode = xmalloc(sizeof(struct cramfs_inode)); |
| |
| inode_to_host(cramfs_is_big_endian, i, inode); |
| return inode; |
| } |
| |
| static struct cramfs_inode *iget(unsigned int ino) |
| { |
| return cramfs_iget(romfs_read(ino)); |
| } |
| |
| static void iput(struct cramfs_inode *inode) |
| { |
| free(inode); |
| } |
| |
| /* |
| * Return the offset of the root directory |
| */ |
| static struct cramfs_inode *read_super(void) |
| { |
| struct cramfs_inode *root = cramfs_iget(&super.root); |
| unsigned long offset = root->offset << 2; |
| |
| if (!S_ISDIR(root->mode)) |
| errx(FSCK_EX_UNCORRECTED, _("root inode is not directory")); |
| if (!(super.flags & CRAMFS_FLAG_SHIFTED_ROOT_OFFSET) && |
| ((offset != sizeof(struct cramfs_super)) && |
| (offset != PAD_SIZE + sizeof(struct cramfs_super)))) { |
| errx(FSCK_EX_UNCORRECTED, _("bad root offset (%lu)"), offset); |
| } |
| return root; |
| } |
| |
| static int uncompress_block(void *src, size_t len) |
| { |
| int err; |
| |
| stream.next_in = src; |
| stream.avail_in = len; |
| |
| stream.next_out = (unsigned char *)outbuffer; |
| stream.avail_out = blksize * 2; |
| |
| inflateReset(&stream); |
| |
| if (len > blksize * 2) |
| errx(FSCK_EX_UNCORRECTED, _("data block too large")); |
| |
| err = inflate(&stream, Z_FINISH); |
| if (err != Z_STREAM_END) |
| errx(FSCK_EX_UNCORRECTED, _("decompression error: %s"), |
| zError(err)); |
| return stream.total_out; |
| } |
| |
| #if !HAVE_LCHOWN |
| #define lchown chown |
| #endif |
| |
| static void do_uncompress(char *path, int outfd, unsigned long offset, |
| unsigned long size) |
| { |
| unsigned long curr = offset + 4 * ((size + blksize - 1) / blksize); |
| |
| do { |
| unsigned long out = blksize; |
| unsigned long next = u32_toggle_endianness(cramfs_is_big_endian, |
| *(uint32_t *) |
| romfs_read(offset)); |
| |
| if (next > end_data) |
| end_data = next; |
| |
| offset += 4; |
| if (curr == next) { |
| if (opt_verbose > 1) |
| printf(_(" hole at %lu (%zu)\n"), curr, |
| blksize); |
| if (size < blksize) |
| out = size; |
| memset(outbuffer, 0x00, out); |
| } else { |
| if (opt_verbose > 1) |
| printf(_(" uncompressing block at %lu to %lu (%lu)\n"), |
| curr, next, next - curr); |
| out = uncompress_block(romfs_read(curr), next - curr); |
| } |
| if (size >= blksize) { |
| if (out != blksize) |
| errx(FSCK_EX_UNCORRECTED, |
| _("non-block (%ld) bytes"), out); |
| } else { |
| if (out != size) |
| errx(FSCK_EX_UNCORRECTED, |
| _("non-size (%ld vs %ld) bytes"), out, |
| size); |
| } |
| size -= out; |
| if (*extract_dir != '\0' && write(outfd, outbuffer, out) < 0) |
| err(FSCK_EX_ERROR, _("write failed: %s"), path); |
| curr = next; |
| } while (size); |
| } |
| |
| static void change_file_status(char *path, struct cramfs_inode *i) |
| { |
| struct utimbuf epoch = { 0, 0 }; |
| |
| if (euid == 0) { |
| if (lchown(path, i->uid, i->gid) < 0) |
| err(FSCK_EX_ERROR, _("lchown failed: %s"), path); |
| if (S_ISLNK(i->mode)) |
| return; |
| if (((S_ISUID | S_ISGID) & i->mode) && chmod(path, i->mode) < 0) |
| err(FSCK_EX_ERROR, _("chown failed: %s"), path); |
| } |
| if (S_ISLNK(i->mode)) |
| return; |
| if (utime(path, &epoch) < 0) |
| err(FSCK_EX_ERROR, _("utime failed: %s"), path); |
| } |
| |
| static void do_directory(char *path, struct cramfs_inode *i) |
| { |
| int pathlen = strlen(path); |
| int count = i->size; |
| unsigned long offset = i->offset << 2; |
| char *newpath = xmalloc(pathlen + 256); |
| |
| if (offset == 0 && count != 0) |
| errx(FSCK_EX_UNCORRECTED, |
| _("directory inode has zero offset and non-zero size: %s"), |
| path); |
| |
| if (offset != 0 && offset < start_dir) |
| start_dir = offset; |
| |
| /* TODO: Do we need to check end_dir for empty case? */ |
| memcpy(newpath, path, pathlen); |
| newpath[pathlen] = '/'; |
| pathlen++; |
| if (opt_verbose) |
| print_node('d', i, path); |
| |
| if (*extract_dir != '\0') { |
| if (mkdir(path, i->mode) < 0) |
| err(FSCK_EX_ERROR, _("mkdir failed: %s"), path); |
| change_file_status(path, i); |
| } |
| while (count > 0) { |
| struct cramfs_inode *child = iget(offset); |
| int size; |
| int newlen = child->namelen << 2; |
| |
| size = sizeof(struct cramfs_inode) + newlen; |
| count -= size; |
| |
| offset += sizeof(struct cramfs_inode); |
| |
| memcpy(newpath + pathlen, romfs_read(offset), newlen); |
| newpath[pathlen + newlen] = 0; |
| if (newlen == 0) |
| errx(FSCK_EX_UNCORRECTED, _("filename length is zero")); |
| if ((pathlen + newlen) - strlen(newpath) > 3) |
| errx(FSCK_EX_UNCORRECTED, _("bad filename length")); |
| expand_fs(newpath, child); |
| |
| offset += newlen; |
| |
| if (offset <= start_dir) |
| errx(FSCK_EX_UNCORRECTED, _("bad inode offset")); |
| if (offset > end_dir) |
| end_dir = offset; |
| iput(child); /* free(child) */ |
| } |
| free(newpath); |
| } |
| |
| static void do_file(char *path, struct cramfs_inode *i) |
| { |
| unsigned long offset = i->offset << 2; |
| int outfd = 0; |
| |
| if (offset == 0 && i->size != 0) |
| errx(FSCK_EX_UNCORRECTED, |
| _("file inode has zero offset and non-zero size")); |
| if (i->size == 0 && offset != 0) |
| errx(FSCK_EX_UNCORRECTED, |
| _("file inode has zero size and non-zero offset")); |
| if (offset != 0 && offset < start_data) |
| start_data = offset; |
| if (opt_verbose) |
| print_node('f', i, path); |
| if (*extract_dir != '\0') { |
| outfd = open(path, O_WRONLY | O_CREAT | O_TRUNC, i->mode); |
| if (outfd < 0) |
| err(FSCK_EX_ERROR, _("cannot open %s"), path); |
| } |
| if (i->size) |
| do_uncompress(path, outfd, offset, i->size); |
| if ( *extract_dir != '\0') { |
| if (close_fd(outfd) != 0) |
| err(FSCK_EX_ERROR, _("write failed: %s"), path); |
| change_file_status(path, i); |
| } |
| } |
| |
| static void do_symlink(char *path, struct cramfs_inode *i) |
| { |
| unsigned long offset = i->offset << 2; |
| unsigned long curr = offset + 4; |
| unsigned long next = |
| u32_toggle_endianness(cramfs_is_big_endian, |
| *(uint32_t *) romfs_read(offset)); |
| unsigned long size; |
| |
| if (offset == 0) |
| errx(FSCK_EX_UNCORRECTED, _("symbolic link has zero offset")); |
| if (i->size == 0) |
| errx(FSCK_EX_UNCORRECTED, _("symbolic link has zero size")); |
| |
| if (offset < start_data) |
| start_data = offset; |
| if (next > end_data) |
| end_data = next; |
| |
| size = uncompress_block(romfs_read(curr), next - curr); |
| if (size != i->size) |
| errx(FSCK_EX_UNCORRECTED, _("size error in symlink: %s"), path); |
| outbuffer[size] = 0; |
| if (opt_verbose) { |
| char *str; |
| |
| xasprintf(&str, "%s -> %s", path, outbuffer); |
| print_node('l', i, str); |
| if (opt_verbose > 1) |
| printf(_(" uncompressing block at %lu to %lu (%lu)\n"), |
| curr, next, next - curr); |
| free(str); |
| } |
| if (*extract_dir != '\0') { |
| if (symlink(outbuffer, path) < 0) |
| err(FSCK_EX_ERROR, _("symlink failed: %s"), path); |
| change_file_status(path, i); |
| } |
| } |
| |
| static void do_special_inode(char *path, struct cramfs_inode *i) |
| { |
| dev_t devtype = 0; |
| char type; |
| |
| if (i->offset) |
| /* no need to shift offset */ |
| errx(FSCK_EX_UNCORRECTED, |
| _("special file has non-zero offset: %s"), path); |
| |
| if (S_ISCHR(i->mode)) { |
| devtype = i->size; |
| type = 'c'; |
| } else if (S_ISBLK(i->mode)) { |
| devtype = i->size; |
| type = 'b'; |
| } else if (S_ISFIFO(i->mode)) { |
| if (i->size != 0) |
| errx(FSCK_EX_UNCORRECTED, _("fifo has non-zero size: %s"), |
| path); |
| type = 'p'; |
| } else if (S_ISSOCK(i->mode)) { |
| if (i->size != 0) |
| errx(FSCK_EX_UNCORRECTED, |
| _("socket has non-zero size: %s"), path); |
| type = 's'; |
| } else { |
| errx(FSCK_EX_UNCORRECTED, _("bogus mode: %s (%o)"), path, i->mode); |
| return; /* not reached */ |
| } |
| |
| if (opt_verbose) |
| print_node(type, i, path); |
| |
| if (*extract_dir != '\0') { |
| if (mknod(path, i->mode, devtype) < 0) |
| err(FSCK_EX_ERROR, _("mknod failed: %s"), path); |
| change_file_status(path, i); |
| } |
| } |
| |
| static void expand_fs(char *path, struct cramfs_inode *inode) |
| { |
| if (S_ISDIR(inode->mode)) |
| do_directory(path, inode); |
| else if (S_ISREG(inode->mode)) |
| do_file(path, inode); |
| else if (S_ISLNK(inode->mode)) |
| do_symlink(path, inode); |
| else |
| do_special_inode(path, inode); |
| } |
| |
| static void test_fs(int start) |
| { |
| struct cramfs_inode *root; |
| |
| root = read_super(); |
| umask(0); |
| euid = geteuid(); |
| stream.next_in = NULL; |
| stream.avail_in = 0; |
| inflateInit(&stream); |
| expand_fs(extract_dir, root); |
| inflateEnd(&stream); |
| if (start_data != ~0UL) { |
| if (start_data < (sizeof(struct cramfs_super) + start)) |
| errx(FSCK_EX_UNCORRECTED, |
| _("directory data start (%lu) < sizeof(struct cramfs_super) + start (%zu)"), |
| start_data, sizeof(struct cramfs_super) + start); |
| if (end_dir != start_data) |
| errx(FSCK_EX_UNCORRECTED, |
| _("directory data end (%lu) != file data start (%lu)"), |
| end_dir, start_data); |
| } |
| if (super.flags & CRAMFS_FLAG_FSID_VERSION_2 && end_data > super.size) |
| errx(FSCK_EX_UNCORRECTED, _("invalid file data offset")); |
| |
| iput(root); /* free(root) */ |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int c; /* for getopt */ |
| int start = 0; |
| size_t length = 0; |
| |
| static const struct option longopts[] = { |
| {"verbose", no_argument, NULL, 'v'}, |
| {"version", no_argument, NULL, 'V'}, |
| {"help", no_argument, NULL, 'h'}, |
| {"blocksize", required_argument, NULL, 'b'}, |
| {"extract", optional_argument, NULL, 'x'}, |
| {NULL, 0, NULL, 0}, |
| }; |
| |
| setlocale(LC_MESSAGES, ""); |
| setlocale(LC_CTYPE, ""); |
| bindtextdomain(PACKAGE, LOCALEDIR); |
| textdomain(PACKAGE); |
| atexit(close_stdout); |
| |
| strutils_set_exitcode(FSCK_EX_USAGE); |
| |
| /* command line options */ |
| while ((c = getopt_long(argc, argv, "ayvVhb:", longopts, NULL)) != EOF) |
| switch (c) { |
| case 'a': /* ignore */ |
| case 'y': |
| break; |
| case 'h': |
| usage(); |
| break; |
| case 'V': |
| printf(UTIL_LINUX_VERSION); |
| return FSCK_EX_OK; |
| case 'x': |
| opt_extract = 1; |
| if(optarg) |
| extract_dir = optarg; |
| break; |
| case 'v': |
| opt_verbose++; |
| break; |
| case 'b': |
| blksize = strtou32_or_err(optarg, _("invalid blocksize argument")); |
| break; |
| default: |
| errtryhelp(FSCK_EX_USAGE); |
| } |
| |
| if ((argc - optind) != 1){ |
| warnx(_("bad usage")); |
| errtryhelp(FSCK_EX_USAGE); |
| } |
| filename = argv[optind]; |
| |
| test_super(&start, &length); |
| test_crc(start); |
| |
| if(opt_extract) { |
| if (blksize == 0) |
| blksize = getpagesize(); |
| outbuffer = xmalloc(blksize * 2); |
| test_fs(start); |
| } |
| |
| if (opt_verbose) |
| printf(_("%s: OK\n"), filename); |
| |
| exit(FSCK_EX_OK); |
| } |