static void do_uncompress(char *path, int fd, 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 %ld (%zd)\n"), curr,
blksize);
if (size < blksize)
out = size;
memset(outbuffer, 0x00, out);
} 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 >= 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')
if (write(fd, outbuffer, out) < 0)
err(FSCK_EX_ERROR, _("write failed: %s"),
path);
curr = next;
} while (size);
}
static void do_uncompress(char *path, int fd, unsigned long offset, unsigned long size)
{
unsigned long curr = offset + 4 * ((size + PAGE_CACHE_SIZE - 1) / PAGE_CACHE_SIZE);
do {
unsigned long out = PAGE_CACHE_SIZE;
unsigned long next = *(u32 *) romfs_read(offset);
if (next > end_data) {
end_data = next;
}
offset += 4;
if (curr == next) {
if (opt_verbose > 1) {
printf(" hole at %ld (%d)\n", curr, PAGE_CACHE_SIZE);
}
if (size < PAGE_CACHE_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);
}
out = uncompress_block(romfs_read(curr), next - curr);
}
if (size >= PAGE_CACHE_SIZE) {
if (out != PAGE_CACHE_SIZE) {
die(FSCK_UNCORRECTED, 0, "non-block (%ld) bytes", out);
}
} else {
if (out != size) {
die(FSCK_UNCORRECTED, 0, "non-size (%ld vs %ld) bytes", out, size);
}
}
size -= out;
if (opt_extract) {
if (write(fd, outbuffer, out) < 0) {
die(FSCK_ERROR, 1, "write failed: %s", path);
}
}
curr = next;
} while (size);
}
static void do_uncompress(int fd, unsigned long offset, unsigned long size)
{
unsigned long curr = offset + 4 * ((size + PAGE_CACHE_SIZE - 1) / PAGE_CACHE_SIZE);
do {
unsigned long out = PAGE_CACHE_SIZE;
unsigned long next = *(unsigned long *) romfs_read(offset);
if (next > end_data) {
end_data = next;
}
offset += 4;
if (curr == next) {
if (opt_verbose > 1) {
printf(" hole at %ld (%d)\n", curr, PAGE_CACHE_SIZE);
}
if (size < PAGE_CACHE_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);
}
out = uncompress_block(romfs_read(curr), next - curr);
}
if (size >= PAGE_CACHE_SIZE) {
if (out != PAGE_CACHE_SIZE) {
fprintf(stderr, "%s: Non-block (%ld) bytes\n", filename, out);
exit(4);
}
} else {
if (out != size) {
fprintf(stderr, "%s: Non-size (%ld vs %ld) bytes\n", filename, out, size);
exit(4);
}
}
size -= out;
if (opt_extract) {
write(fd, outbuffer, out);
}
curr = next;
} while (size);
}
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 *) romfs_read(offset);
unsigned long size;
if (offset == 0) {
die(FSCK_UNCORRECTED, 0, "symbolic link has zero offset");
}
if (i->size == 0) {
die(FSCK_UNCORRECTED, 0, "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) {
die(FSCK_UNCORRECTED, 0, "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);
}
free(str);
}
if (opt_extract) {
if (symlink(outbuffer, path) < 0) {
die(FSCK_ERROR, 1, "symlink 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 %ld to %ld (%ld)\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_symlink(char *path, struct cramfs_inode *i)
{
unsigned long offset = i->offset << 2;
unsigned long curr = offset + 4;
unsigned long next = *(unsigned long *) romfs_read(offset);
unsigned long size;
if (next > end_data) {
end_data = next;
}
size = uncompress_block(romfs_read(curr), next - curr);
if (size != i->size) {
fprintf(stderr, "%s: size error in symlink `%s'\n",
filename, path);
exit(4);
}
outbuffer[size] = 0;
if (opt_verbose) {
char *str;
str = malloc(strlen(outbuffer) + strlen(path) + 5);
strcpy(str, path);
strncat(str, " -> ", 4);
strncat(str, outbuffer, size);
print_node('l', i, str);
if (opt_verbose > 1) {
printf(" uncompressing block at %ld to %ld (%ld)\n", curr, next, next - curr);
}
}
if (opt_extract) {
symlink(outbuffer, path);
change_file_status(path, i);
}
}
