static void do_file(char *path, struct cramfs_inode *i)
{
unsigned long offset = i->offset << 2;
int fd = 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') {
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, i->mode);
if (fd < 0)
err(FSCK_EX_ERROR, _("cannot open %s"), path);
}
if (i->size)
do_uncompress(path, fd, offset, i->size);
if ( *extract_dir != '\0') {
if (close_fd(fd) != 0)
err(FSCK_EX_ERROR, _("write failed: %s"), path);
change_file_status(path, i);
}
}
static void do_file(char *path, struct cramfs_inode *i)
{
unsigned long offset = i->offset << 2;
int fd = 0;
if (offset == 0 && i->size != 0) {
die(FSCK_UNCORRECTED, 0, "file inode has zero offset and non-zero size");
}
if (i->size == 0 && offset != 0) {
die(FSCK_UNCORRECTED, 0, "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 (opt_extract) {
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, i->mode);
if (fd < 0) {
die(FSCK_ERROR, 1, "open failed: %s", path);
}
}
if (i->size) {
do_uncompress(path, fd, offset, i->size);
}
if (opt_extract) {
close(fd);
change_file_status(path, i);
}
}
static void do_special_inode(char *path, struct cramfs_inode *i)
{
dev_t devtype = 0;
char type;
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))
type = 'p';
else if (S_ISSOCK(i->mode))
type = 's';
else {
fprintf(stderr, "%s: bogus mode on `%s' (%o)\n", filename, path, i->mode);
exit(4);
}
if (opt_verbose) {
print_node(type, i, path);
}
if (opt_extract) {
if (mknod(path, i->mode, devtype) < 0) {
perror(path);
exit(8);
}
change_file_status(path, i);
}
}
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_special_inode(char *path, struct cramfs_inode *i)
{
dev_t devtype = 0;
char type;
if (i->offset) { /* no need to shift offset */
die(FSCK_UNCORRECTED, 0, "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) {
die(FSCK_UNCORRECTED, 0, "fifo has non-zero size: %s", path);
}
type = 'p';
}
else if (S_ISSOCK(i->mode)) {
if (i->size != 0) {
die(FSCK_UNCORRECTED, 0, "socket has non-zero size: %s", path);
}
type = 's';
}
else {
die(FSCK_UNCORRECTED, 0, "bogus mode: %s (%o)", path, i->mode);
return; /* not reached */
}
if (opt_verbose) {
print_node(type, i, path);
}
if (opt_extract) {
if (mknod(path, i->mode, devtype) < 0) {
die(FSCK_ERROR, 1, "mknod 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 *) 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_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 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);
}
}
static void expand_fs(int pathlen, char *path, struct cramfs_inode *inode)
{
if (S_ISDIR(inode->mode)) {
int count = inode->size;
unsigned long offset = inode->offset << 2;
char *newpath = malloc(pathlen + 256);
if (count > 0 && offset < start_inode) {
start_inode = offset;
}
/* XXX - need to check end_inode for empty case? */
memcpy(newpath, path, pathlen);
newpath[pathlen] = '/';
pathlen++;
if (opt_verbose) {
print_node('d', inode, path);
}
if (opt_extract) {
mkdir(path, inode->mode);
change_file_status(path, inode);
}
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 ((pathlen + newlen) - strlen(newpath) > 3) {
fprintf(stderr, "%s: invalid cramfs--bad path length\n", filename);
exit(4);
}
expand_fs(strlen(newpath), newpath, child);
offset += newlen;
if (offset > end_inode) {
end_inode = offset;
}
}
return;
}
if (S_ISREG(inode->mode)) {
int fd = 0;
unsigned long offset = inode->offset << 2;
if (offset > 0 && offset < start_data) {
start_data = offset;
}
if (opt_verbose) {
print_node('f', inode, path);
}
if (opt_extract) {
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, inode->mode);
}
if (inode->size) {
do_uncompress(fd, offset, inode->size);
}
if (opt_extract) {
close(fd);
change_file_status(path, inode);
}
return;
}
if (S_ISLNK(inode->mode)) {
unsigned long offset = inode->offset << 2;
if (offset < start_data) {
start_data = offset;
}
do_symlink(path, inode);
return;
}
else {
do_special_inode(path, inode);
return;
}
}
