static int cramfs_is_big_endian = 0; /* source is big endian */
static int opt_verbose = 0; /* 1 = verbose (-v), 2+ = very verbose (-vv) */
-char *extract_dir = ""; /* extraction directory (-x) */
+char *extract_dir = ""; /* extraction directory (-x) */
#define PAD_SIZE 512
static int opt_extract = 0; /* extract cramfs (-x) */
-static uid_t euid; /* effective UID */
+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 */
+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)
+#define ROMBUFFERMASK (ROMBUFFERSIZE - 1)
static char read_buffer[ROMBUFFERSIZE * 2];
static unsigned long read_buffer_block = ~0UL;
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)) {
+ } else if (magic ==
+ u32_toggle_endianness(!HOST_IS_BIG_ENDIAN, CRAMFS_MAGIC)) {
cramfs_is_big_endian = !HOST_IS_BIG_ENDIAN;
return 0;
- }
- else {
+ } else
return -1;
- }
}
-static void test_super(int *start, size_t *length) {
+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) {
+ if (stat(filename, &st) < 0)
err(FSCK_ERROR, _("stat failed: %s"), filename);
- }
+
fd = open(filename, O_RDONLY);
- if (fd < 0) {
+ if (fd < 0)
err(FSCK_ERROR, _("open failed: %s"), filename);
- }
+
if (S_ISBLK(st.st_mode)) {
unsigned long long bytes;
- if (blkdev_get_size(fd, &bytes)) {
- err(FSCK_ERROR, _("ioctl failed: unable to determine device size: %s"), filename);
- }
+ if (blkdev_get_size(fd, &bytes))
+ err(FSCK_ERROR,
+ _("ioctl failed: unable to determine device size: %s"),
+ filename);
*length = bytes;
- }
- else if (S_ISREG(st.st_mode)) {
+ } else if (S_ISREG(st.st_mode))
*length = st.st_size;
- }
- else {
+ else
errx(FSCK_ERROR, _("not a block device or file: %s"), filename);
- }
- if (*length < sizeof(struct cramfs_super)) {
+ if (*length < sizeof(struct cramfs_super))
errx(FSCK_UNCORRECTED, _("file length too short"));
- }
/* find superblock */
- if (read(fd, &super, sizeof(super)) != sizeof(super)) {
+ if (read(fd, &super, sizeof(super)) != sizeof(super))
err(FSCK_ERROR, _("read failed: %s"), filename);
- }
- if (get_superblock_endianness(super.magic) != -1) {
+ if (get_superblock_endianness(super.magic) != -1)
*start = 0;
- }
else if (*length >= (PAD_SIZE + sizeof(super))) {
lseek(fd, PAD_SIZE, SEEK_SET);
- if (read(fd, &super, sizeof(super)) != sizeof(super)) {
+ if (read(fd, &super, sizeof(super)) != sizeof(super))
err(FSCK_ERROR, _("read failed: %s"), filename);
- }
- if (get_superblock_endianness(super.magic) != -1) {
+ if (get_superblock_endianness(super.magic) != -1)
*start = PAD_SIZE;
- }
- else {
+ else
errx(FSCK_UNCORRECTED, "superblock magic not found");
- }
- }
- else {
+ } else
errx(FSCK_UNCORRECTED, _("superblock magic not found"));
- }
- if (opt_verbose) {
- printf("cramfs endianness is %s\n", cramfs_is_big_endian ? "big" : "little");
- }
+ 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) {
+ if (super.flags & ~CRAMFS_SUPPORTED_FLAGS)
errx(FSCK_ERROR, _("unsupported filesystem features"));
- }
- if (super.size < page_size) {
- errx(FSCK_UNCORRECTED, _("superblock size (%d) too small"), super.size);
- }
+
+ if (super.size < page_size)
+ errx(FSCK_UNCORRECTED, _("superblock size (%d) too small"),
+ super.size);
+
if (super.flags & CRAMFS_FLAG_FSID_VERSION_2) {
- if (super.fsid.files == 0) {
+ if (super.fsid.files == 0)
errx(FSCK_UNCORRECTED, _("zero file count"));
- }
- if (*length < super.size) {
+ if (*length < super.size)
errx(FSCK_UNCORRECTED, _("file length too short"));
- }
- else if (*length > super.size) {
- fprintf(stderr, _("warning: file extends past end of filesystem\n"));
- }
- }
- else {
+ else if (*length > super.size)
+ fprintf(stderr,
+ _("warning: file extends past end of filesystem\n"));
+ } else
fprintf(stderr, _("warning: old cramfs format\n"));
- }
}
static void test_crc(int start)
if (!(super.flags & CRAMFS_FLAG_FSID_VERSION_2)) {
#ifdef INCLUDE_FS_TESTS
return;
-#else /* not INCLUDE_FS_TESTS */
+#else
errx(FSCK_USAGE, _("unable to test CRC: old cramfs format"));
-#endif /* not INCLUDE_FS_TESTS */
+#endif
}
crc = crc32(0L, Z_NULL, 0);
- buf = mmap(NULL, super.size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 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);
+ buf =
+ mmap(NULL, super.size, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (buf != MAP_FAILED) {
lseek(fd, 0, SEEK_SET);
if (read(fd, buf, super.size) < 0)
}
}
if (buf != MAP_FAILED) {
- ((struct cramfs_super *) (buf+start))->fsid.crc = crc32(0L, Z_NULL, 0);
- crc = crc32(crc, buf+start, super.size-start);
+ ((struct cramfs_super *)(buf + start))->fsid.crc =
+ crc32(0L, Z_NULL, 0);
+ crc = crc32(crc, buf + start, super.size - start);
munmap(buf, super.size);
- }
- else {
+ } else {
int retval;
size_t length = 0;
lseek(fd, start, SEEK_SET);
for (;;) {
retval = read(fd, buf, 4096);
- if (retval < 0) {
+ if (retval < 0)
err(FSCK_ERROR, _("read failed: %s"), filename);
- }
- else if (retval == 0) {
+ else if (retval == 0)
break;
- }
- if (length == 0) {
- ((struct cramfs_super *) buf)->fsid.crc = crc32(0L, Z_NULL, 0);
- }
+ if (length == 0)
+ ((struct cramfs_super *)buf)->fsid.crc =
+ crc32(0L, Z_NULL, 0);
length += retval;
- if (length > (super.size-start)) {
- crc = crc32(crc, buf, retval - (length - (super.size-start)));
+ 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) {
+ if (crc != super.fsid.crc)
errx(FSCK_UNCORRECTED, _("crc error"));
- }
}
#ifdef INCLUDE_FS_TESTS
{
char info[10];
- if (S_ISCHR(i->mode) || (S_ISBLK(i->mode))) {
+ 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 {
+ 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,
return read_buffer + (offset & ROMBUFFERMASK);
}
-static struct cramfs_inode *cramfs_iget(struct cramfs_inode * i)
+static struct cramfs_inode *cramfs_iget(struct cramfs_inode *i)
{
struct cramfs_inode *inode = xmalloc(sizeof(struct cramfs_inode));
*/
static struct cramfs_inode *read_super(void)
{
- struct cramfs_inode * root = cramfs_iget(&super.root);
+ struct cramfs_inode *root = cramfs_iget(&super.root);
unsigned long offset = root->offset << 2;
if (!S_ISDIR(root->mode))
errx(FSCK_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))))
- {
+ (offset != PAD_SIZE + sizeof(struct cramfs_super)))) {
errx(FSCK_UNCORRECTED, _("bad root offset (%lu)"), offset);
}
return root;
stream.next_in = src;
stream.avail_in = len;
- stream.next_out = (unsigned char *) outbuffer;
- stream.avail_out = page_size*2;
+ stream.next_out = (unsigned char *)outbuffer;
+ stream.avail_out = page_size * 2;
inflateReset(&stream);
- if (len > page_size*2) {
+ if (len > page_size * 2)
errx(FSCK_UNCORRECTED, _("data block too large"));
- }
+
err = inflate(&stream, Z_FINISH);
- if (err != Z_STREAM_END) {
+ if (err != Z_STREAM_END)
errx(FSCK_UNCORRECTED, _("decompression error %p(%d): %s"),
- zError(err), src, len);
- }
+ zError(err), src, len);
return stream.total_out;
}
#if !HAVE_LCHOWN
#define lchown chown
#endif
-static void do_uncompress(char *path, int fd, unsigned long offset, unsigned long size)
+
+static void do_uncompress(char *path, int fd, unsigned long offset,
+ unsigned long size)
{
unsigned long curr = offset + 4 * ((size + page_size - 1) / page_size);
do {
unsigned long out = page_size;
- unsigned long next = u32_toggle_endianness(cramfs_is_big_endian, *(uint32_t *) romfs_read(offset));
+ unsigned long next = u32_toggle_endianness(cramfs_is_big_endian,
+ *(uint32_t *)
+ romfs_read(offset));
- if (next > end_data) {
+ if (next > end_data)
end_data = next;
- }
offset += 4;
if (curr == next) {
- if (opt_verbose > 1) {
- printf(_(" hole at %ld (%zd)\n"), curr, page_size);
- }
+ if (opt_verbose > 1)
+ printf(_(" hole at %ld (%zd)\n"), curr,
+ page_size);
if (size < page_size)
out = size;
memset(outbuffer, 0x00, out);
- }
- else {
- if (opt_verbose > 1) {
- printf(_(" uncompressing block at %ld to %ld (%ld)\n"), curr, next, next - curr);
- }
+ } else {
+ if (opt_verbose > 1)
+ printf(_(" uncompressing block at %ld to %ld (%ld)\n"),
+ curr, next, next - curr);
out = uncompress_block(romfs_read(curr), next - curr);
}
if (size >= page_size) {
- if (out != page_size) {
- errx(FSCK_UNCORRECTED, _("non-block (%ld) bytes"), out);
- }
+ if (out != page_size)
+ errx(FSCK_UNCORRECTED,
+ _("non-block (%ld) bytes"), out);
} else {
- if (out != size) {
- errx(FSCK_UNCORRECTED, _("non-size (%ld vs %ld) bytes"), out, size);
- }
+ if (out != size)
+ errx(FSCK_UNCORRECTED,
+ _("non-size (%ld vs %ld) bytes"), out,
+ size);
}
size -= out;
- if (opt_extract) {
- if (write(fd, outbuffer, out) < 0) {
- err(FSCK_ERROR, _("write failed: %s"), path);
- }
- }
+ if (opt_extract)
+ if (write(fd, outbuffer, out) < 0)
+ err(FSCK_ERROR, _("write failed: %s"),
+ path);
curr = next;
} while (size);
}
struct utimbuf epoch = { 0, 0 };
if (euid == 0) {
- if (lchown(path, i->uid, i->gid) < 0) {
+ if (lchown(path, i->uid, i->gid) < 0)
err(FSCK_ERROR, _("lchown failed: %s"), path);
- }
if (S_ISLNK(i->mode))
return;
- if ((S_ISUID | S_ISGID) & i->mode) {
- if (chmod(path, i->mode) < 0) {
- err(FSCK_ERROR, _("chown failed: %s"), path);
- }
- }
+ if (((S_ISUID | S_ISGID) & i->mode) && chmod(path, i->mode) < 0)
+ err(FSCK_ERROR, _("chown failed: %s"), path);
}
if (S_ISLNK(i->mode))
return;
- if (utime(path, &epoch) < 0) {
+ if (utime(path, &epoch) < 0)
err(FSCK_ERROR, _("utime failed: %s"), path);
- }
}
static void do_directory(char *path, struct cramfs_inode *i)
unsigned long offset = i->offset << 2;
char *newpath = xmalloc(pathlen + 256);
- if (offset == 0 && count != 0) {
- errx(FSCK_UNCORRECTED, _("directory inode has zero offset and non-zero size: %s"), path);
- }
- if (offset != 0 && offset < start_dir) {
+ if (offset == 0 && count != 0)
+ errx(FSCK_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) {
+ if (opt_verbose)
print_node('d', i, path);
- }
+
if (opt_extract) {
- if (mkdir(path, i->mode) < 0) {
+ if (mkdir(path, i->mode) < 0)
err(FSCK_ERROR, _("mkdir failed: %s"), path);
- }
change_file_status(path, i);
}
while (count > 0) {
memcpy(newpath + pathlen, romfs_read(offset), newlen);
newpath[pathlen + newlen] = 0;
- if (newlen == 0) {
+ if (newlen == 0)
errx(FSCK_UNCORRECTED, _("filename length is zero"));
- }
- if ((pathlen + newlen) - strlen(newpath) > 3) {
+ if ((pathlen + newlen) - strlen(newpath) > 3)
errx(FSCK_UNCORRECTED, _("bad filename length"));
- }
expand_fs(newpath, child);
offset += newlen;
- if (offset <= start_dir) {
+ if (offset <= start_dir)
errx(FSCK_UNCORRECTED, _("bad inode offset"));
- }
- if (offset > end_dir) {
+ if (offset > end_dir)
end_dir = offset;
- }
- iput(child); /* free(child) */
+ iput(child); /* free(child) */
}
free(newpath);
}
unsigned long offset = i->offset << 2;
int fd = 0;
- if (offset == 0 && i->size != 0) {
- errx(FSCK_UNCORRECTED, _("file inode has zero offset and non-zero size"));
- }
- if (i->size == 0 && offset != 0) {
- errx(FSCK_UNCORRECTED, _("file inode has zero size and non-zero offset"));
- }
- if (offset != 0 && offset < start_data) {
+ if (offset == 0 && i->size != 0)
+ errx(FSCK_UNCORRECTED,
+ _("file inode has zero offset and non-zero size"));
+ if (i->size == 0 && offset != 0)
+ errx(FSCK_UNCORRECTED,
+ _("file inode has zero size and non-zero offset"));
+ if (offset != 0 && offset < start_data)
start_data = offset;
- }
- if (opt_verbose) {
+ if (opt_verbose)
print_node('f', i, path);
- }
if (opt_extract) {
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, i->mode);
- if (fd < 0) {
+ if (fd < 0)
err(FSCK_ERROR, _("open failed: %s"), path);
- }
}
- if (i->size) {
+ if (i->size)
do_uncompress(path, fd, offset, i->size);
- }
if (opt_extract) {
close(fd);
change_file_status(path, 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 next =
+ u32_toggle_endianness(cramfs_is_big_endian,
+ *(uint32_t *) romfs_read(offset));
unsigned long size;
- if (offset == 0) {
+ if (offset == 0)
errx(FSCK_UNCORRECTED, _("symbolic link has zero offset"));
- }
- if (i->size == 0) {
+ if (i->size == 0)
errx(FSCK_UNCORRECTED, _("symbolic link has zero size"));
- }
- if (offset < start_data) {
+ if (offset < start_data)
start_data = offset;
- }
- if (next > end_data) {
+ if (next > end_data)
end_data = next;
- }
size = uncompress_block(romfs_read(curr), next - curr);
- if (size != i->size) {
+ if (size != i->size)
errx(FSCK_UNCORRECTED, _("size error in symlink: %s"), path);
- }
outbuffer[size] = 0;
if (opt_verbose) {
char *str;
asprintf(&str, "%s -> %s", path, outbuffer);
print_node('l', i, str);
- if (opt_verbose > 1) {
- printf(_(" uncompressing block at %ld to %ld (%ld)\n"), curr, next, next - curr);
- }
+ if (opt_verbose > 1)
+ printf(_(" uncompressing block at %ld to %ld (%ld)\n"),
+ curr, next, next - curr);
free(str);
}
if (opt_extract) {
- if (symlink(outbuffer, path) < 0) {
+ if (symlink(outbuffer, path) < 0)
err(FSCK_ERROR, _("symlink failed: %s"), path);
- }
change_file_status(path, i);
}
}
dev_t devtype = 0;
char type;
- if (i->offset) { /* no need to shift offset */
- errx(FSCK_UNCORRECTED, _("special file has non-zero offset: %s"), path);
- }
+ if (i->offset)
+ /* no need to shift offset */
+ errx(FSCK_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)) {
+ } else if (S_ISBLK(i->mode)) {
devtype = i->size;
type = 'b';
- }
- else if (S_ISFIFO(i->mode)) {
- if (i->size != 0) {
- errx(FSCK_UNCORRECTED, _("fifo has non-zero size: %s"), path);
- }
+ } else if (S_ISFIFO(i->mode)) {
+ if (i->size != 0)
+ errx(FSCK_UNCORRECTED, _("fifo has non-zero size: %s"),
+ path);
type = 'p';
- }
- else if (S_ISSOCK(i->mode)) {
- if (i->size != 0) {
- errx(FSCK_UNCORRECTED, _("socket has non-zero size: %s"), path);
- }
+ } else if (S_ISSOCK(i->mode)) {
+ if (i->size != 0)
+ errx(FSCK_UNCORRECTED,
+ _("socket has non-zero size: %s"), path);
type = 's';
- }
- else {
+ } else {
errx(FSCK_UNCORRECTED, _("bogus mode: %s (%o)"), path, i->mode);
return; /* not reached */
}
- if (opt_verbose) {
+ if (opt_verbose)
print_node(type, i, path);
- }
if (opt_extract) {
- if (mknod(path, i->mode, devtype) < 0) {
+ if (mknod(path, i->mode, devtype) < 0)
err(FSCK_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)) {
+ if (S_ISDIR(inode->mode))
do_directory(path, inode);
- }
- else if (S_ISREG(inode->mode)) {
+ else if (S_ISREG(inode->mode))
do_file(path, inode);
- }
- else if (S_ISLNK(inode->mode)) {
+ else if (S_ISLNK(inode->mode))
do_symlink(path, inode);
- }
- else {
+ else
do_special_inode(path, inode);
- }
}
static void test_fs(int start)
expand_fs(extract_dir, root);
inflateEnd(&stream);
if (start_data != ~0UL) {
- if (start_data < (sizeof(struct cramfs_super) + start)) {
- errx(FSCK_UNCORRECTED, _("directory data start (%ld) < sizeof(struct cramfs_super) + start (%ld)"), start_data, sizeof(struct cramfs_super) + start);
- }
- if (end_dir != start_data) {
- errx(FSCK_UNCORRECTED, _("directory data end (%ld) != file data start (%ld)"), end_dir, start_data);
- }
- }
- if (super.flags & CRAMFS_FLAG_FSID_VERSION_2) {
- if (end_data > super.size) {
+ if (start_data < (sizeof(struct cramfs_super) + start))
+ errx(FSCK_UNCORRECTED,
+ _("directory data start (%ld) < sizeof(struct cramfs_super) + start (%ld)"),
+ start_data, sizeof(struct cramfs_super) + start);
+ if (end_dir != start_data)
+ errx(FSCK_UNCORRECTED,
+ _("directory data end (%ld) != file data start (%ld)"),
+ end_dir, start_data);
+ }
+ if (super.flags & CRAMFS_FLAG_FSID_VERSION_2)
+ if (end_data > super.size)
errx(FSCK_UNCORRECTED, _("invalid file data offset"));
- }
- }
+
iput(root); /* free(root) */
}
#endif /* INCLUDE_FS_TESTS */
outbuffer = xmalloc(page_size * 2);
/* command line options */
- while ((c = getopt(argc, argv, "hx:v")) != EOF) {
+ while ((c = getopt(argc, argv, "hx:v")) != EOF)
switch (c) {
case 'h':
usage(FSCK_OK);
opt_extract = 1;
extract_dir = optarg;
break;
-#else /* not INCLUDE_FS_TESTS */
+#else
errx(FSCK_USAGE, _("compiled without -x support"));
-#endif /* not INCLUDE_FS_TESTS */
+#endif
case 'v':
opt_verbose++;
break;
}
- }
if ((argc - optind) != 1)
usage(FSCK_USAGE);
test_crc(start);
#ifdef INCLUDE_FS_TESTS
test_fs(start);
-#endif /* INCLUDE_FS_TESTS */
+#endif
- if (opt_verbose) {
+ if (opt_verbose)
printf("%s: OK\n", filename);
- }
exit(FSCK_OK);
}
projects / thirdparty / util-linux.git / commitdiff
