/*
* Return the offset of the root directory,
* or 0 if none.
*/
static struct cramfs_inode *read_super(void)
{
unsigned long offset;
offset = super->root.offset << 2;
if (super->magic != CRAMFS_MAGIC)
return NULL;
if (memcmp(super->signature, CRAMFS_SIGNATURE, sizeof(super->signature)) != 0)
return NULL;
if (offset < sizeof(super))
return NULL;
return cramfs_iget(&super->root);
}
/*
* 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;
}
/*
* Return the offset of the root directory
*/
static struct cramfs_inode *read_super(void)
{
unsigned long offset = super.root.offset << 2;
if (!S_ISDIR(super.root.mode))
die(FSCK_UNCORRECTED, 0, "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))))
{
die(FSCK_UNCORRECTED, 0, "bad root offset (%lu)", offset);
}
return cramfs_iget(&super.root);
}
static void test_fs(int start)
{
struct cramfs_inode *root;
unsigned long root_offset;
root = cramfs_iget(&super.root);
root_offset = root->offset << 2;
if (!S_ISDIR(root->mode))
die(FSCK_UNCORRECTED, 0, "root inode is not directory");
if (!(super.flags & CRAMFS_FLAG_SHIFTED_ROOT_OFFSET) &&
((root_offset != sizeof(struct cramfs_super)) &&
(root_offset != PAD_SIZE + sizeof(struct cramfs_super))))
{
die(FSCK_UNCORRECTED, 0, "bad root offset (%lu)", root_offset);
}
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)) {
die(FSCK_UNCORRECTED, 0, "directory data start (%ld) < sizeof(struct cramfs_super) + start (%ld)", start_data, sizeof(struct cramfs_super) + start);
}
if (end_dir != start_data) {
die(FSCK_UNCORRECTED, 0, "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) {
die(FSCK_UNCORRECTED, 0, "invalid file data offset");
}
}
iput(root); /* free(root) */
}
static struct cramfs_inode *iget(unsigned int ino)
{
return cramfs_iget(romfs_read(ino));
}
