errcode_t ocfs2_block_iterate(ocfs2_filesys *fs,
uint64_t blkno,
int flags,
int (*func)(ocfs2_filesys *fs,
uint64_t blkno,
uint64_t bcount,
uint16_t ext_flags,
void *priv_data),
void *priv_data)
{
struct ocfs2_dinode *inode;
errcode_t ret;
char *buf;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
return ret;
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
goto out_buf;
inode = (struct ocfs2_dinode *)buf;
ret = ocfs2_block_iterate_inode(fs, inode, flags, func, priv_data);
out_buf:
ocfs2_free(&buf);
return ret;
}
errcode_t ocfs2_extent_iterate(ocfs2_filesys *fs,
uint64_t blkno,
int flags,
char *block_buf,
int (*func)(ocfs2_filesys *fs,
struct ocfs2_extent_rec *rec,
int tree_depth,
uint32_t ccount,
uint64_t ref_blkno,
int ref_recno,
void *priv_data),
void *priv_data)
{
char *buf = NULL;
struct ocfs2_dinode *inode;
errcode_t ret;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
return ret;
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
goto out_buf;
inode = (struct ocfs2_dinode *)buf;
ret = ocfs2_extent_iterate_inode(fs, inode, flags, block_buf,
func, priv_data);
out_buf:
if (buf)
ocfs2_free(&buf);
return ret;
}
errcode_t o2fsck_type_from_dinode(o2fsck_state *ost, uint64_t ino,
uint8_t *type)
{
char *buf = NULL;
errcode_t ret;
struct ocfs2_dinode *dinode;
const char *whoami = __FUNCTION__;
*type = 0;
ret = ocfs2_malloc_block(ost->ost_fs->fs_io, &buf);
if (ret) {
com_err(whoami, ret, "while allocating an inode buffer to "
"read and discover the type of inode %"PRIu64, ino);
goto out;
}
ret = ocfs2_read_inode(ost->ost_fs, ino, buf);
if (ret) {
com_err(whoami, ret, "while reading inode %"PRIu64" to "
"discover its file type", ino);
goto out;
}
dinode = (struct ocfs2_dinode *)buf;
*type = ocfs2_type_by_mode[(dinode->i_mode & S_IFMT)>>S_SHIFT];
out:
if (buf)
ocfs2_free(&buf);
return ret;
}
errcode_t ocfs2_write_backup_super(ocfs2_filesys *fs, uint64_t blkno)
{
errcode_t ret;
char *buf = NULL;
struct ocfs2_dinode *di;
if (!(fs->fs_flags & OCFS2_FLAG_RW))
return OCFS2_ET_RO_FILESYS;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
goto out_blk;
memcpy(buf, (char *)fs->fs_super, fs->fs_blocksize);
di = (struct ocfs2_dinode *)buf;
ret = OCFS2_ET_BAD_MAGIC;
if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
strlen(OCFS2_SUPER_BLOCK_SIGNATURE)))
goto out_blk;
di->i_blkno = blkno;
OCFS2_SET_COMPAT_FEATURE(OCFS2_RAW_SB(di),
OCFS2_FEATURE_COMPAT_BACKUP_SB);
ret = ocfs2_write_inode(fs, blkno, buf);
if (ret)
goto out_blk;
ret = 0;
out_blk:
if (buf)
ocfs2_free(&buf);
return ret;
}
void mess_up_inode_alloc(ocfs2_filesys *fs, enum fsck_type type,
uint16_t slotnum)
{
errcode_t ret;
uint64_t tmpblkno;
char *buf = NULL;
struct ocfs2_dinode *di;
ret = ocfs2_new_inode(fs, &tmpblkno, S_IFREG | 0755);
if (ret)
FSWRK_COM_FATAL(progname, ret);
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
ret = ocfs2_read_inode(fs, tmpblkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
di = (struct ocfs2_dinode *)buf;
di->i_flags &= ~OCFS2_VALID_FL;
ret = ocfs2_write_inode(fs, tmpblkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
fprintf(stdout, "INODE_ALLOC_REPAIR: "
"Create an inode#%"PRIu64" and invalidate it.\n", tmpblkno);
if (buf)
ocfs2_free(&buf);
return;
}
/*
* Emtpy the blocks on the disk.
*/
static errcode_t empty_blocks(ocfs2_filesys *fs,
uint64_t start_blk,
uint64_t num_blocks)
{
errcode_t ret;
char *buf = NULL;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
goto bail;
memset(buf, 0, fs->fs_blocksize);
while (num_blocks) {
ret = io_write_block(fs->fs_io, start_blk, 1, buf);
if (ret)
goto bail;
num_blocks--;
start_blk++;
}
bail:
if (buf)
ocfs2_free(&buf);
return ret;
}
errcode_t ocfs2_extend_file(ocfs2_filesys *fs, uint64_t ino, uint64_t new_size)
{
errcode_t ret = 0;
char *buf = NULL;
struct ocfs2_dinode* di = NULL;
if (!(fs->fs_flags & OCFS2_FLAG_RW))
return OCFS2_ET_RO_FILESYS;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
return ret;
ret = ocfs2_read_inode(fs, ino, buf);
if (ret)
goto out_free_buf;
di = (struct ocfs2_dinode *)buf;
if (di->i_size >= new_size) {
ret = EINVAL;
goto out_free_buf;
}
di->i_size = new_size;
ret = ocfs2_write_inode(fs, ino, buf);
out_free_buf:
if (buf)
ocfs2_free(&buf);
return ret;
}
void dump_dx_entries(FILE *out, struct ocfs2_dinode *inode)
{
struct ocfs2_dx_root_block *dx_root;
uint64_t dx_blkno;
char *buf = NULL;
errcode_t ret = 0;
if (ocfs2_malloc_block(gbls.fs->fs_io, &buf))
return;
if (!(ocfs2_dir_indexed(inode)))
return;
dx_blkno = (uint64_t) inode->i_dx_root;
ret = ocfs2_read_dx_root(gbls.fs, dx_blkno, buf);
if (ret)
return;
dx_root = (struct ocfs2_dx_root_block *)buf;
dump_dx_root(out, dx_root);
ocfs2_dx_entries_iterate(gbls.fs, inode, 0, entries_iter, out);
return;
}
static errcode_t ocfs2_validate_ocfs1_header(ocfs2_filesys *fs)
{
errcode_t ret;
char *blk;
struct ocfs1_vol_disk_hdr *hdr;
ret = ocfs2_malloc_block(fs->fs_io, &blk);
if (ret)
return ret;
ret = ocfs2_read_blocks(fs, 0, 1, blk);
if (ret)
goto out;
hdr = (struct ocfs1_vol_disk_hdr *)blk;
ret = OCFS2_ET_OCFS_REV;
if (le32_to_cpu(hdr->major_version) == OCFS1_MAJOR_VERSION)
goto out;
if (!memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE,
strlen(OCFS1_VOLUME_SIGNATURE)))
goto out;
ret = 0;
out:
ocfs2_free(&blk);
return ret;
}
static errcode_t create_local_alloc(ocfs2_filesys *fs, uint16_t slot)
{
errcode_t ret;
char *buf = NULL;
struct ocfs2_dinode *di;
struct ocfs2_local_alloc *la;
uint32_t la_size, found;
uint64_t la_off, blkno;
ret = ocfs2_lookup_system_inode(fs, LOCAL_ALLOC_SYSTEM_INODE,
slot, &blkno);
if (ret)
goto bail;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
goto bail;
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
goto bail;
di = (struct ocfs2_dinode *)buf;
if (!(di->i_flags & OCFS2_VALID_FL))
goto bail;
if (!(di->i_flags & OCFS2_LOCAL_ALLOC_FL))
goto bail;
if (di->id1.bitmap1.i_total > 0) {
fprintf(stderr, "local alloc#%"PRIu64" file not empty."
"Can't create a new one.\n", blkno);
goto bail;
}
la_size = get_local_alloc_window_bits();
ret = ocfs2_new_clusters(fs, 1, la_size, &la_off, &found);
if (ret)
goto bail;
if(la_size != found)
goto bail;
la = &(di->id2.i_lab);
la->la_bm_off = ocfs2_blocks_to_clusters(fs, la_off);
di->id1.bitmap1.i_total = la_size;
di->id1.bitmap1.i_used = 0;
memset(la->la_bitmap, 0, la->la_size);
ret = ocfs2_write_inode(fs, blkno, buf);
bail:
if(buf)
ocfs2_free(&buf);
return ret;
}
errcode_t ocfs2_chain_iterate(ocfs2_filesys *fs,
uint64_t blkno,
int (*func)(ocfs2_filesys *fs,
uint64_t gd_blkno,
int chain_num,
void *priv_data),
void *priv_data)
{
int iret = 0;
char *buf;
struct ocfs2_dinode *inode;
errcode_t ret;
struct chain_context ctxt;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
return ret;
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
goto out_buf;
inode = (struct ocfs2_dinode *)buf;
ret = OCFS2_ET_INODE_NOT_VALID;
if (!(inode->i_flags & OCFS2_VALID_FL))
goto out_buf;
ret = OCFS2_ET_INODE_CANNOT_BE_ITERATED;
if (!(inode->i_flags & OCFS2_CHAIN_FL))
goto out_buf;
ret = ocfs2_malloc0(fs->fs_blocksize, &ctxt.gd_buf);
if (ret)
goto out_gd_buf;
ctxt.fs = fs;
ctxt.func = func;
ctxt.priv_data = priv_data;
ret = 0;
iret |= chain_iterate_cl(&inode->id2.i_chain, &ctxt);
if (iret & OCFS2_EXTENT_ERROR)
ret = ctxt.errcode;
if (iret & OCFS2_EXTENT_CHANGED) {
/* Do something */
}
out_gd_buf:
if (ctxt.gd_buf)
ocfs2_free(&ctxt.gd_buf);
out_buf:
ocfs2_free(&buf);
return ret;
}
static errcode_t truncate_log_check(ocfs2_filesys *fs,
uint16_t new_slots)
{
errcode_t ret = 0;
uint16_t i;
uint64_t blkno;
char *buf = NULL;
struct ocfs2_dinode *di = NULL;
uint16_t max_slots = OCFS2_RAW_SB(fs->fs_super)->s_max_slots;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret) {
verbosef(VL_APP,
"%s while allocating inode buffer for "
"truncate log check\n",
error_message(ret));
goto bail;
}
for (i = new_slots; i < max_slots; ++i) {
ret = ocfs2_lookup_system_inode(fs, TRUNCATE_LOG_SYSTEM_INODE,
i, &blkno);
if (ret) {
verbosef(VL_APP,
"%s while looking up truncate log for "
"slot %u during truncate log check\n",
error_message(ret), i);
goto bail;
}
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret) {
verbosef(VL_APP,
"%s while reading inode %"PRIu64" "
"during truncate log check\n",
error_message(ret), blkno);
goto bail;
}
di = (struct ocfs2_dinode *)buf;
if (di->id2.i_dealloc.tl_used > 0) {
ret = TUNEFS_ET_TRUNCATE_LOG_NOT_EMPTY;
verbosef(VL_APP,
"Truncate log for slot %u is not empty\n",
i);
goto bail;
}
}
bail:
if (buf)
ocfs2_free(&buf);
return ret;
}
static errcode_t local_alloc_check(ocfs2_filesys *fs,
uint16_t new_slots)
{
errcode_t ret = 0;
uint16_t i;
uint64_t blkno;
char *buf = NULL;
struct ocfs2_dinode *di = NULL;
uint16_t max_slots = OCFS2_RAW_SB(fs->fs_super)->s_max_slots;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret) {
verbosef(VL_APP,
"%s while allocating inode buffer for local "
"alloc check\n",
error_message(ret));
goto bail;
}
for (i = new_slots ; i < max_slots; ++i) {
ret = ocfs2_lookup_system_inode(fs, LOCAL_ALLOC_SYSTEM_INODE,
i, &blkno);
if (ret) {
verbosef(VL_APP,
"%s while looking up local alloc for "
"slot %u during local alloc check\n",
error_message(ret), i);
break;
}
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret) {
verbosef(VL_APP,
"%s while reading inode %"PRIu64" "
"during local alloc check\n",
error_message(ret), blkno);
break;
}
di = (struct ocfs2_dinode *)buf;
if (di->id1.bitmap1.i_total > 0) {
ret = TUNEFS_ET_LOCAL_ALLOC_NOT_EMPTY;
verbosef(VL_APP,
"Local alloc for slot %u is not empty\n",
i);
break;
}
}
bail:
if (buf)
ocfs2_free(&buf);
return ret;
}
static void create_local_alloc(ocfs2_filesys *fs, uint64_t blkno)
{
errcode_t ret;
char *buf = NULL;
struct ocfs2_dinode *di;
struct ocfs2_local_alloc *la;
uint32_t la_size, found;
uint64_t la_off;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
di = (struct ocfs2_dinode *)buf;
if (!(di->i_flags & OCFS2_VALID_FL))
FSWRK_FATAL("not a file");
if (!(di->i_flags & OCFS2_LOCAL_ALLOC_FL))
FSWRK_FATAL("not a local alloc file");
if (di->id1.bitmap1.i_total > 0) {
FSWRK_WARN("local alloc#%"PRIu64" file not empty."
"Can't create a new one.\n", blkno);
goto bail;
}
la_size = get_local_alloc_window_bits();
ret = ocfs2_new_clusters(fs, 1, la_size, &la_off, &found);
if (ret)
FSWRK_COM_FATAL(progname, ret);
if(la_size != found)
FSWRK_FATAL("can't allocate enough clusters for local alloc");
la = &(di->id2.i_lab);
la->la_bm_off = la_off;
di->id1.bitmap1.i_total = la_size;
di->id1.bitmap1.i_used = 0;
memset(la->la_bitmap, 0, la->la_size);
ret = ocfs2_write_inode(fs, blkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
bail:
if(buf)
ocfs2_free(&buf);
return;
}
void mess_up_inode_field(ocfs2_filesys *fs, enum fsck_type type, uint64_t blkno)
{
errcode_t ret;
uint64_t tmpblkno;
uint32_t clusters = 10;
char *buf = NULL;
struct ocfs2_dinode *di;
create_file(fs, blkno, &tmpblkno);
if ((type == INODE_SPARSE_SIZE) || (type == INODE_SPARSE_CLUSTERS)) {
if (!ocfs2_sparse_alloc(OCFS2_RAW_SB(fs->fs_super)))
FSWRK_FATAL("should specfiy a sparse file supported "
"volume to do this corruption\n");
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
ret = ocfs2_read_inode(fs, tmpblkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
di = (struct ocfs2_dinode *)buf;
di->i_size = fs->fs_clustersize * 2;
ret = ocfs2_write_inode(fs, tmpblkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
if (buf)
ocfs2_free(&buf);
}
if ((type == INODE_CLUSTERS) || (type == INODE_SPARSE_CLUSTERS) ||
(type == INODE_SPARSE_SIZE)) {
ret = ocfs2_extend_allocation(fs, tmpblkno, clusters);
if (ret)
FSWRK_COM_FATAL(progname, ret);
}
if (type == REFCOUNT_FLAG_INVALID &&
ocfs2_refcount_tree(OCFS2_RAW_SB(fs->fs_super)))
FSWRK_FATAL("should specfiy a norefcount volume\n");
if (type == REFCOUNT_LOC_INVALID &&
!ocfs2_refcount_tree(OCFS2_RAW_SB(fs->fs_super)))
FSWRK_FATAL("Should specify a refcount supported volume\n");
damage_inode(fs, tmpblkno, type);
return;
}
int is_dir_inlined(char *dirent_name, unsigned long *i_size,
unsigned int *id_count)
{
int ret;
uint64_t workplace_blk_no = 1;
uint64_t testdir_blk_no = 1;
char *buf = NULL;
struct ocfs2_dinode *di;
struct ocfs2_super_block *sb = OCFS2_RAW_SB(fs->fs_super);
sync();
ocfs2_malloc_block(fs->fs_io, &buf);
/*lookup worksplace inode*/
ret = ocfs2_lookup(fs, sb->s_root_blkno, WORK_PLACE,
strlen(WORK_PLACE), NULL, &workplace_blk_no);
if (ret < 0) {
fprintf(stderr, "failed to lookup work_place(%s)'s"
" inode blkno\n", work_place);
ocfs2_free(&buf);
exit(ret);
}
/*lookup file inode,then read*/
ret = ocfs2_lookup(fs, workplace_blk_no, dirent_name,
strlen(dirent_name), NULL, &testdir_blk_no);
if (ret < 0) {
fprintf(stderr, "failed to lookup file(%s/%s)'s"
" inode blkno\n", work_place, dirent_name);
ocfs2_free(&buf);
exit(ret);
}
ret = ocfs2_read_inode(fs, testdir_blk_no, buf);
if (ret < 0) {
fprintf(stderr, "failed to read file(%s/%s/%s)'s"
" inode.\n", mount_point, WORK_PLACE, dirent_name);
ocfs2_free(&buf);
exit(ret);
}
di = (struct ocfs2_dinode *)buf;
*i_size = di->i_size;
*id_count = ((di->id2).i_data).id_count;
if (di->i_dyn_features & OCFS2_INLINE_DATA_FL)
ret = 1;
else
ret = 0;
ocfs2_free(&buf);
return ret;
}
void mess_up_inline_flag(ocfs2_filesys *fs, enum fsck_type type, uint64_t blkno)
{
int i;
errcode_t ret;
char *buf = NULL, file_type[20];
uint64_t inline_blkno;
struct ocfs2_dinode *di;
struct ocfs2_super_block *osb;
osb = OCFS2_RAW_SB(fs->fs_super);
if (ocfs2_support_inline_data(osb))
FSWRK_FATAL("should specfiy a noinline-data supported "
"volume to do this corruption\n");
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
for (i = 0; i < 2; i++) {
if (i == 0) {
create_file(fs, blkno, &inline_blkno);
snprintf(file_type, 20, "%s", "Regular file");
} else {
create_directory(fs, blkno, &inline_blkno);
snprintf(file_type, 20, "%s", "Diectory");
}
ret = ocfs2_read_inode(fs, inline_blkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
di = (struct ocfs2_dinode *)buf;
if (!(di->i_dyn_features & OCFS2_INLINE_DATA_FL)) {
di->i_dyn_features |= OCFS2_INLINE_DATA_FL;
ret = ocfs2_write_inode(fs, inline_blkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
}
fprintf(stdout, "INLINE_DATA_FLAG_INVALID: "
"Create an inlined inode#%"PRIu64"(%s) "
"on a noinline-data supported volume\n",
inline_blkno, file_type);
}
if (buf)
ocfs2_free(&buf);
return;
}
/*
* NOTE: ocfs2_truncate_inline() also handles fast symlink,
* since truncating for inline file and fasy symlink are
* almost the same thing per se.
*/
errcode_t ocfs2_truncate_inline(ocfs2_filesys *fs, uint64_t ino,
uint64_t new_i_size)
{
errcode_t ret = 0;
char *buf = NULL;
struct ocfs2_dinode *di = NULL;
struct ocfs2_inline_data *idata = NULL;
if (!(fs->fs_flags & OCFS2_FLAG_RW))
return OCFS2_ET_RO_FILESYS;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
return ret;
ret = ocfs2_read_inode(fs, ino, buf);
if (ret)
goto out_free_buf;
di = (struct ocfs2_dinode *)buf;
if (di->i_size < new_i_size) {
ret = EINVAL;
goto out_free_buf;
}
idata = &di->id2.i_data;
if (!(di->i_dyn_features & OCFS2_INLINE_DATA_FL) &&
!(S_ISLNK(di->i_mode) && !di->i_clusters)) {
ret = EINVAL;
goto out_free_buf;
}
if (di->i_dyn_features & OCFS2_INLINE_DATA_FL)
memset(idata->id_data + new_i_size, 0, di->i_size - new_i_size);
else
memset(di->id2.i_symlink + new_i_size, 0,
di->i_size - new_i_size);
di->i_size = new_i_size;
ret = ocfs2_write_inode(fs, ino, buf);
out_free_buf:
if (buf)
ocfs2_free(&buf);
return ret;
}
static errcode_t remove_slot_entry(ocfs2_filesys *fs, uint16_t removed_slot)
{
struct remove_slot_ctxt ctxt = {
.fs = fs,
.removed_slot = removed_slot,
.errcode = 0
};
ocfs2_dir_iterate(fs, fs->fs_sysdir_blkno,
OCFS2_DIRENT_FLAG_EXCLUDE_DOTS, NULL,
remove_slot_iterate, &ctxt);
return ctxt.errcode;
}
static errcode_t decrease_link_count(ocfs2_filesys *fs, uint16_t blkno)
{
errcode_t ret;
char *buf = NULL;
struct ocfs2_dinode *di = NULL;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
goto bail;
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
goto bail;
di = (struct ocfs2_dinode *)buf;
if (di->i_links_count > 0)
di->i_links_count--;
else {
ret = OCFS2_ET_INODE_NOT_VALID;
goto bail;
}
ret = ocfs2_write_inode(fs, blkno, buf);
bail:
if (buf)
ocfs2_free(&buf);
return ret;
}
errcode_t handle_slots_system_file(ocfs2_filesys *fs,
int type,
errcode_t (*func)(ocfs2_filesys *fs,
struct ocfs2_dinode *di,
int slot))
{
errcode_t ret;
uint64_t blkno;
int slot, max_slots;
char *buf = NULL;
struct ocfs2_dinode *di;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
goto bail;
di = (struct ocfs2_dinode *)buf;
max_slots = OCFS2_RAW_SB(fs->fs_super)->s_max_slots;
for (slot = 0; slot < max_slots; slot++) {
ret = ocfs2_lookup_system_inode(fs,
type,
slot, &blkno);
if (ret)
goto bail;
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
goto bail;
if (func) {
ret = func(fs, di, slot);
if (ret)
goto bail;
}
}
bail:
if (buf)
ocfs2_free(&buf);
return ret;
}
errcode_t ocfs2_get_last_cluster_offset(ocfs2_filesys *fs,
struct ocfs2_dinode *di,
uint32_t *v_cluster)
{
errcode_t ret = 0;
char *buf = NULL;
struct ocfs2_extent_list *el = NULL;
struct ocfs2_extent_rec *er = NULL;
el = &di->id2.i_list;
*v_cluster = 0;
if (!el->l_next_free_rec)
return 0;
if (el->l_tree_depth) {
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
goto bail;
ret = ocfs2_read_extent_block(fs, di->i_last_eb_blk, buf);
if (ret)
goto bail;
el = &((struct ocfs2_extent_block *)buf)->h_list;
if (!el->l_next_free_rec ||
(el->l_next_free_rec == 1 &&
ocfs2_is_empty_extent(&el->l_recs[0]))) {
ret = OCFS2_ET_CORRUPT_EXTENT_BLOCK;
goto bail;
}
}
er = &el->l_recs[el->l_next_free_rec - 1];
*v_cluster = er->e_cpos + er->e_leaf_clusters - 1;
bail:
if (buf)
ocfs2_free(&buf);
return ret;
}
errcode_t ocfs2_read_extent_block_nocheck(ocfs2_filesys *fs,
uint64_t blkno,
char *eb_buf)
{
errcode_t ret;
char *blk;
struct ocfs2_extent_block *eb;
if ((blkno < OCFS2_SUPER_BLOCK_BLKNO) ||
(blkno > fs->fs_blocks))
return OCFS2_ET_BAD_BLKNO;
ret = ocfs2_malloc_block(fs->fs_io, &blk);
if (ret)
return ret;
ret = ocfs2_read_blocks(fs, blkno, 1, blk);
if (ret)
goto out;
eb = (struct ocfs2_extent_block *)blk;
ret = ocfs2_validate_meta_ecc(fs, blk, &eb->h_check);
if (ret)
goto out;
if (memcmp(eb->h_signature, OCFS2_EXTENT_BLOCK_SIGNATURE,
strlen(OCFS2_EXTENT_BLOCK_SIGNATURE))) {
ret = OCFS2_ET_BAD_EXTENT_BLOCK_MAGIC;
goto out;
}
memcpy(eb_buf, blk, fs->fs_blocksize);
eb = (struct ocfs2_extent_block *) eb_buf;
ocfs2_swap_extent_block_to_cpu(fs, eb);
out:
ocfs2_free(&blk);
return ret;
}
static void mess_up_superblock_clusters(ocfs2_filesys *fs, int excess)
{
errcode_t ret;
char *buf = NULL;
struct ocfs2_dinode *di = fs->fs_super;
uint32_t new_clusters, cpg, wrong;
/* corrupt superblock, just copy the
* superblock, change it and
* write it back to disk.
*/
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
memcpy(buf, (char *)di, fs->fs_blocksize);
di = (struct ocfs2_dinode *)buf;
cpg = 8 * ocfs2_group_bitmap_size(fs->fs_blocksize, 0,
OCFS2_RAW_SB(fs->fs_super)->s_feature_incompat);
/* make the wrong value to 2.5 times of cluster_per_group. */
wrong = cpg * 2 + cpg / 2;
if (excess)
new_clusters = di->i_clusters + wrong;
else
new_clusters = di->i_clusters - wrong;
fprintf(stdout, "Corrupt SUPERBLOCK_CLUSTERS: "
"change superblock i_clusters from %u to %u.\n",
di->i_clusters, new_clusters);
di->i_clusters = new_clusters;
ret = io_write_block(fs->fs_io, di->i_blkno, 1, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
if(buf)
ocfs2_free(&buf);
return;
}
errcode_t ocfs2_read_group_desc(ocfs2_filesys *fs, uint64_t blkno,
char *gd_buf)
{
errcode_t ret;
char *blk;
struct ocfs2_group_desc *gd;
if ((blkno < OCFS2_SUPER_BLOCK_BLKNO) ||
(blkno > fs->fs_blocks))
return OCFS2_ET_BAD_BLKNO;
ret = ocfs2_malloc_block(fs->fs_io, &blk);
if (ret)
return ret;
ret = ocfs2_read_blocks(fs, blkno, 1, blk);
if (ret)
goto out;
gd = (struct ocfs2_group_desc *)blk;
ret = ocfs2_validate_meta_ecc(fs, blk, &gd->bg_check);
if (ret)
goto out;
ret = OCFS2_ET_BAD_GROUP_DESC_MAGIC;
if (memcmp(gd->bg_signature, OCFS2_GROUP_DESC_SIGNATURE,
strlen(OCFS2_GROUP_DESC_SIGNATURE)))
goto out;
memcpy(gd_buf, blk, fs->fs_blocksize);
gd = (struct ocfs2_group_desc *)gd_buf;
ocfs2_swap_group_desc_to_cpu(fs, gd);
ret = 0;
out:
ocfs2_free(&blk);
return ret;
}
static errcode_t io_validate_o_direct(io_channel *channel)
{
errcode_t ret = OCFS2_ET_UNEXPECTED_BLOCK_SIZE;
int block_size;
char *blk;
for (block_size = io_get_blksize(channel);
block_size <= OCFS2_MAX_BLOCKSIZE;
block_size <<= 1) {
io_set_blksize(channel, block_size);
ret = ocfs2_malloc_block(channel, &blk);
if (ret)
break;
ret = unix_io_read_block(channel, 0, 1, blk);
ocfs2_free(&blk);
if (!ret)
break;
}
return ret;
}
/*
* dump_xattr_block()
*
*/
errcode_t dump_xattr_block(FILE *out, ocfs2_filesys *fs,
struct ocfs2_dinode *in,
uint32_t *xattrs_block,
uint64_t *xattrs_bucket,
int verbose)
{
errcode_t ret;
char *blk = NULL;
struct ocfs2_xattr_block *xb = NULL;
ret = ocfs2_malloc_block(fs->fs_io, &blk);
if (ret)
goto out;
ret = ocfs2_read_xattr_block(fs, in->i_xattr_loc, blk);
if (ret)
goto out;
xb = (struct ocfs2_xattr_block *)blk;
if (!(xb->xb_flags & OCFS2_XATTR_INDEXED)) {
struct ocfs2_xattr_header *xh = &xb->xb_attrs.xb_header;
*xattrs_block = xh->xh_count;
fprintf(out, "\tExtended Attributes in block #%"PRIu64": %u\n",
(uint64_t)in->i_xattr_loc, *xattrs_block);
if (verbose)
dump_xattr(out, xh);
} else {
ret = dump_xattr_index_block(out, fs, in, xb,
xattrs_bucket, verbose);
}
out:
if (blk)
ocfs2_free(&blk);
return ret;
}
errcode_t ocfs2_write_extent_block(ocfs2_filesys *fs, uint64_t blkno,
char *eb_buf)
{
errcode_t ret;
char *blk;
struct ocfs2_extent_block *eb;
if (!(fs->fs_flags & OCFS2_FLAG_RW))
return OCFS2_ET_RO_FILESYS;
if ((blkno < OCFS2_SUPER_BLOCK_BLKNO) ||
(blkno > fs->fs_blocks))
return OCFS2_ET_BAD_BLKNO;
ret = ocfs2_malloc_block(fs->fs_io, &blk);
if (ret)
return ret;
memcpy(blk, eb_buf, fs->fs_blocksize);
eb = (struct ocfs2_extent_block *) blk;
ocfs2_swap_extent_block_from_cpu(fs, eb);
ocfs2_compute_meta_ecc(fs, blk, &eb->h_check);
ret = io_write_block(fs->fs_io, blkno, 1, blk);
if (ret)
goto out;
fs->fs_flags |= OCFS2_FLAG_CHANGED;
ret = 0;
out:
ocfs2_free(&blk);
return ret;
}
errcode_t ocfs2_write_group_desc(ocfs2_filesys *fs, uint64_t blkno,
char *gd_buf)
{
errcode_t ret;
char *blk;
struct ocfs2_group_desc *gd;
if (!(fs->fs_flags & OCFS2_FLAG_RW))
return OCFS2_ET_RO_FILESYS;
if ((blkno < OCFS2_SUPER_BLOCK_BLKNO) ||
(blkno > fs->fs_blocks))
return OCFS2_ET_BAD_BLKNO;
ret = ocfs2_malloc_block(fs->fs_io, &blk);
if (ret)
return ret;
memcpy(blk, gd_buf, fs->fs_blocksize);
gd = (struct ocfs2_group_desc *)blk;
ocfs2_swap_group_desc_from_cpu(fs, gd);
ocfs2_compute_meta_ecc(fs, blk, &gd->bg_check);
ret = io_write_block(fs->fs_io, blkno, 1, blk);
if (ret)
goto out;
fs->fs_flags |= OCFS2_FLAG_CHANGED;
ret = 0;
out:
ocfs2_free(&blk);
return ret;
}
static void damage_truncate_log(ocfs2_filesys *fs,
uint64_t blkno, enum fsck_type type, int recnum)
{
errcode_t ret;
char *buf = NULL;
struct ocfs2_dinode *di;
struct ocfs2_truncate_log *tl;
struct ocfs2_truncate_rec *tr;
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
di = (struct ocfs2_dinode *)buf;
if (!(di->i_flags & OCFS2_VALID_FL))
FSWRK_FATAL("not a valid file");
if (!(di->i_flags & OCFS2_DEALLOC_FL))
FSWRK_FATAL("not a valid truncate log");
tl = &di->id2.i_dealloc;
/* For TRUNCATE_REC_START_RANGE, TRUNCATE_REC_WRAP, TRUNCATE_REC_RANGE,
* tl_used must be greater than 0 and recnum must be less than tl_used.
* So check it first.
*/
if (type == TRUNCATE_REC_START_RANGE || type == TRUNCATE_REC_WRAP ||
type == TRUNCATE_REC_RANGE) {
if (tl->tl_used == 0) {
FSWRK_WARN("truncate log#%"PRIu64" is empty, so can't"
"corrupt it for type[%d]\n",
blkno, type);
goto bail;
}
if(tl->tl_used <= recnum) {
FSWRK_WARN("truncate log#%"PRIu64" can't corrupt "
"item[%d] corrupt it for type[%d]\n",
blkno, recnum, type);
goto bail;
}
}
switch (type) {
case DEALLOC_COUNT:
fprintf(stdout, "DEALLOC_COUNT: "
"Corrupt truncate log inode#%"PRIu64", change tl_count"
" from %u to %u\n",
blkno, tl->tl_count, (tl->tl_count + 10));
tl->tl_count += 10;
break;
case DEALLOC_USED:
fprintf(stdout, "DEALLOC_USED: "
"Corrupt truncate log inode#%"PRIu64", change tl_used"
" from %u to %u\n",
blkno, tl->tl_used, (tl->tl_count + 10));
tl->tl_used = tl->tl_count + 10;
break;
case TRUNCATE_REC_START_RANGE:
tr = &tl->tl_recs[recnum];
fprintf(stdout, "TRUNCATE_REC_START_RANGE: "
"Corrupt truncate log inode#%"PRIu64",rec#%d "
"change t_start from %u to %u\n",
blkno, recnum, tr->t_start, (fs->fs_clusters + 10));
tr->t_start = fs->fs_clusters + 10;
break;
case TRUNCATE_REC_WRAP:
tr = &tl->tl_recs[recnum];
fprintf(stdout, "TRUNCATE_REC_WRAP: "
"Corrupt truncate log inode#%"PRIu64",rec#%d "
"change t_start from %u to 10000\n,"
"change t_clusters from %u to %u\n",
blkno, recnum,
tr->t_start,tr->t_clusters, (UINT32_MAX - 10));
tr->t_start = 10000;
tr->t_clusters = UINT32_MAX - 10;
break;
case TRUNCATE_REC_RANGE:
tr = &tl->tl_recs[recnum];
fprintf(stdout, "TRUNCATE_REC_RANGE: "
"Corrupt truncate log inode#%"PRIu64",rec#%d "
"change t_clusters from %u to %u\n",
blkno, recnum, tr->t_clusters, (fs->fs_clusters + 10));
tr->t_clusters = fs->fs_clusters + 10;
break;
default:
FSWRK_FATAL("Unknown type = %d", type);
}
ret = ocfs2_write_inode(fs, blkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
bail:
if (buf)
ocfs2_free(&buf);
return;
}
static void create_truncate_log(ocfs2_filesys *fs, uint64_t blkno,
uint16_t used, uint32_t clusters)
{
errcode_t ret;
char *buf = NULL;
struct ocfs2_dinode *di;
struct ocfs2_truncate_log *tl;
uint16_t i, max;
uint32_t found;
uint64_t begin;
max = ocfs2_truncate_recs_per_inode(fs->fs_blocksize);
if (used > max)
FSWRK_FATAL("recnum exceeds the limit of truncate log");
ret = ocfs2_malloc_block(fs->fs_io, &buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
ret = ocfs2_read_inode(fs, blkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
di = (struct ocfs2_dinode *)buf;
if (!(di->i_flags & OCFS2_VALID_FL))
FSWRK_FATAL("not a valid file");
if (!(di->i_flags & OCFS2_DEALLOC_FL))
FSWRK_FATAL("not a valid truncate log");
tl = &di->id2.i_dealloc;
if (tl->tl_used > 0) {
FSWRK_WARN("truncate log#%"PRIu64" file not empty."
"Can't create a new one.\n", blkno);
goto bail;
}
used = min(used, tl->tl_count);
tl->tl_used = used;
for (i = 0; i < tl->tl_used; i++) {
ret = ocfs2_new_clusters(fs, 1, clusters, &begin, &found);
if (ret)
FSWRK_COM_FATAL(progname, ret);
tl->tl_recs[i].t_start =
cpu_to_le32(ocfs2_blocks_to_clusters(fs, begin));
tl->tl_recs[i].t_clusters = cpu_to_le32(found);
}
ret = ocfs2_write_inode(fs, blkno, buf);
if (ret)
FSWRK_COM_FATAL(progname, ret);
bail:
if(buf)
ocfs2_free(&buf);
return;
}