void do_print_all(int argc, char **argv)
{
const char *usage = "[--leaf-only|--reverse|--reverse-leaf]";
struct ext2fs_extent extent;
errcode_t retval;
errcode_t end_err = EXT2_ET_EXTENT_NO_NEXT;
int op = EXT2_EXTENT_NEXT;
int first_op = EXT2_EXTENT_ROOT;
if (common_extent_args_process(argc, argv, 1, 2, "print_all",
usage, 0))
return;
if (argc == 2) {
if (!strcmp(argv[1], "--leaf-only"))
op = EXT2_EXTENT_NEXT_LEAF;
else if (!strcmp(argv[1], "--reverse")) {
op = EXT2_EXTENT_PREV;
first_op = EXT2_EXTENT_LAST_LEAF;
end_err = EXT2_ET_EXTENT_NO_PREV;
} else if (!strcmp(argv[1], "--reverse-leaf")) {
op = EXT2_EXTENT_PREV_LEAF;
first_op = EXT2_EXTENT_LAST_LEAF;
end_err = EXT2_ET_EXTENT_NO_PREV;
} else {
fprintf(stderr, "Usage: %s %s\n", argv[0], usage);
return;
}
}
retval = ext2fs_extent_get(current_handle, first_op, &extent);
if (retval) {
com_err(argv[0], retval, 0);
return;
}
dbg_print_extent(0, &extent);
while (1) {
retval = ext2fs_extent_get(current_handle, op, &extent);
if (retval == end_err)
break;
if (retval) {
com_err(argv[0], retval, 0);
return;
}
dbg_print_extent(0, &extent);
}
}
void do_info(int argc, char **argv)
{
struct ext2fs_extent extent;
struct ext2_extent_info info;
errcode_t retval;
if (common_extent_args_process(argc, argv, 1, 1, "info", "", 0))
return;
retval = ext2fs_extent_get_info(current_handle, &info);
if (retval) {
com_err(argv[0], retval, 0);
return;
}
retval = ext2fs_extent_get(current_handle,
EXT2_EXTENT_CURRENT, &extent);
if (retval) {
com_err(argv[0], retval, 0);
return;
}
dbg_print_extent(0, &extent);
printf("Current handle location: %d/%d (max: %d, bytes %d), level %d/%d\n",
info.curr_entry, info.num_entries, info.max_entries,
info.bytes_avail, info.curr_level, info.max_depth);
printf("\tmax lblk: %llu, max pblk: %llu\n", info.max_lblk,
info.max_pblk);
printf("\tmax_len: %u, max_uninit_len: %u\n", info.max_len,
info.max_uninit_len);
}
void do_set_bmap(int argc, char **argv)
{
const char *usage = "[--uninit] <lblk> <pblk>";
struct ext2fs_extent extent;
errcode_t retval;
blk_t logical;
blk_t physical;
char *cmd = argv[0];
int flags = 0;
int err;
if (common_extent_args_process(argc, argv, 3, 5, "set_bmap",
usage, CHECK_FS_RW | CHECK_FS_BITMAPS))
return;
if (argc > 2 && !strcmp(argv[1], "--uninit")) {
argc--;
argv++;
flags |= EXT2_EXTENT_SET_BMAP_UNINIT;
}
if (argc != 3) {
fprintf(stderr, "Usage: %s %s\n", cmd, usage);
return;
}
logical = parse_ulong(argv[1], cmd,
"logical block", &err);
if (err)
return;
physical = parse_ulong(argv[2], cmd,
"physical block", &err);
if (err)
return;
retval = ext2fs_extent_set_bmap(current_handle, logical,
(blk64_t) physical, flags);
if (retval) {
com_err(cmd, retval, 0);
return;
}
retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
&extent);
if (retval)
return;
dbg_print_extent(0, &extent);
}
errcode_t ext2fs_extent_replace(ext2_extent_handle_t handle,
int flags EXT2FS_ATTR((unused)),
struct ext2fs_extent *extent)
{
struct extent_path *path;
struct ext3_extent_idx *ix;
struct ext3_extent *ex;
EXT2_CHECK_MAGIC(handle, EXT2_ET_MAGIC_EXTENT_HANDLE);
if (!(handle->fs->flags & EXT2_FLAG_RW))
return EXT2_ET_RO_FILSYS;
if (!handle->path)
return EXT2_ET_NO_CURRENT_NODE;
path = handle->path + handle->level;
if (!path->curr)
return EXT2_ET_NO_CURRENT_NODE;
#ifdef DEBUG
printf("extent replace: %u ", handle->ino);
dbg_print_extent(0, extent);
#endif
if (handle->level == handle->max_depth) {
ex = path->curr;
ex->ee_block = ext2fs_cpu_to_le32(extent->e_lblk);
ex->ee_start = ext2fs_cpu_to_le32(extent->e_pblk & 0xFFFFFFFF);
ex->ee_start_hi = ext2fs_cpu_to_le16(extent->e_pblk >> 32);
if (extent->e_flags & EXT2_EXTENT_FLAGS_UNINIT) {
if (extent->e_len > EXT_UNINIT_MAX_LEN)
return EXT2_ET_EXTENT_INVALID_LENGTH;
ex->ee_len = ext2fs_cpu_to_le16(extent->e_len +
EXT_INIT_MAX_LEN);
} else {
if (extent->e_len > EXT_INIT_MAX_LEN)
return EXT2_ET_EXTENT_INVALID_LENGTH;
ex->ee_len = ext2fs_cpu_to_le16(extent->e_len);
}
} else {
void do_delete_node(int argc, char *argv[])
{
struct ext2fs_extent extent;
errcode_t retval;
if (common_extent_args_process(argc, argv, 1, 1, "delete_node",
"", CHECK_FS_RW | CHECK_FS_BITMAPS))
return;
retval = ext2fs_extent_delete(current_handle, 0);
if (retval) {
com_err(argv[0], retval, 0);
return;
}
retval = ext2fs_extent_get(current_handle, EXT2_EXTENT_CURRENT,
&extent);
if (retval)
return;
dbg_print_extent(0, &extent);
}
static void generic_goto_node(const char *my_name, int argc,
char **argv, int op)
{
struct ext2fs_extent extent;
errcode_t retval;
if (my_name && common_args_process(argc, argv, 1, 1,
my_name, "", 0))
return;
if (!current_handle) {
com_err(argv[0], 0, "Extent handle not open");
return;
}
retval = ext2fs_extent_get(current_handle, op, &extent);
if (retval) {
com_err(argv[0], retval, 0);
return;
}
dbg_print_extent(0, &extent);
}
/*
* Go to the node at leaf_level which contains logical block blk.
*
* leaf_level is height from the leaf node level, i.e.
* leaf_level 0 is at leaf node, leaf_level 1 is 1 above etc.
*
* If "blk" has no mapping (hole) then handle is left at last
* extent before blk.
*/
static errcode_t extent_goto(ext2_extent_handle_t handle,
int leaf_level, blk64_t blk)
{
struct ext2fs_extent extent;
errcode_t retval;
retval = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
if (retval) {
if (retval == EXT2_ET_EXTENT_NO_NEXT)
retval = EXT2_ET_EXTENT_NOT_FOUND;
return retval;
}
if (leaf_level > handle->max_depth) {
#ifdef DEBUG
printf("leaf level %d greater than tree depth %d\n",
leaf_level, handle->max_depth);
#endif
return EXT2_ET_OP_NOT_SUPPORTED;
}
dbg_print_extent("root", &extent);
while (1) {
if (handle->max_depth - handle->level == leaf_level) {
/* block is in this &extent */
if ((blk >= extent.e_lblk) &&
(blk < extent.e_lblk + extent.e_len))
return 0;
if (blk < extent.e_lblk) {
retval = ext2fs_extent_get(handle,
EXT2_EXTENT_PREV_SIB,
&extent);
return EXT2_ET_EXTENT_NOT_FOUND;
}
retval = ext2fs_extent_get(handle,
EXT2_EXTENT_NEXT_SIB,
&extent);
if (retval == EXT2_ET_EXTENT_NO_NEXT)
return EXT2_ET_EXTENT_NOT_FOUND;
if (retval)
return retval;
continue;
}
retval = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT_SIB,
&extent);
if (retval == EXT2_ET_EXTENT_NO_NEXT)
goto go_down;
if (retval)
return retval;
dbg_print_extent("next", &extent);
if (blk == extent.e_lblk)
goto go_down;
if (blk > extent.e_lblk)
continue;
retval = ext2fs_extent_get(handle, EXT2_EXTENT_PREV_SIB,
&extent);
if (retval)
return retval;
dbg_print_extent("prev", &extent);
go_down:
retval = ext2fs_extent_get(handle, EXT2_EXTENT_DOWN,
&extent);
if (retval)
return retval;
dbg_print_extent("down", &extent);
}
}
