@@ -23,6 +23,8 @@
#include "ctree.h"
#include "disk-io.h"
+#include "extent_io.h"
+#include "transaction.h"
#include "debug_btrfs.h"
void do_show_debugfs_params(int argc, char *argv[])
@@ -48,3 +50,101 @@ void do_open_filesys(int argc, char *argv[])
return;
}
}
+
+void dump_inode_details(u64 ino, struct extent_buffer *leaf,
+ struct btrfs_inode_item *inode_item)
+{
+ char *format_space = " ";
+ printf("Inode: %10llu", (unsigned long long)ino);
+ printf("%sMode: %5o", format_space,
+ btrfs_inode_mode(leaf, inode_item) & 0777);
+ printf("%sUser: %d\n", format_space, btrfs_inode_uid(leaf, inode_item));
+ printf("Size: %llu\n", (unsigned long long)
+ btrfs_inode_size(leaf, inode_item));
+ return;
+}
+
+void dump_file_extent(u64 offset, struct extent_buffer *leaf,
+ struct btrfs_file_extent_item *file_extent_item)
+{
+ printf("[%15llu - %15llu (%15llu)]\t->\t", (unsigned long long) offset,
+ (unsigned long long)
+ offset + btrfs_file_extent_num_bytes(leaf, file_extent_item),
+ btrfs_file_extent_num_bytes(leaf, file_extent_item));
+
+ printf("%15llu (%15llu)\n", (unsigned long long)
+ btrfs_file_extent_disk_bytenr(leaf, file_extent_item),
+ btrfs_file_extent_disk_num_bytes(leaf, file_extent_item));
+ return ;
+}
+
+void dump_file_hole_extent(u64 offset, u64 end_offset)
+{
+ printf("[%15llu - %15llu (%15llu)]\t->\t", (unsigned long long) offset,
+ (unsigned long long) end_offset, end_offset - offset);
+ printf("Hole\n");
+}
+
+void do_print_inode(int argc, char *argv[])
+{
+ int ret;
+ u64 offset, inode_i_size;
+ struct btrfs_path *path;
+ struct btrfs_key inode_key;
+ struct extent_buffer *leaf;
+ struct btrfs_trans_handle *trans;
+ struct btrfs_inode_item *inode_item;
+ struct btrfs_file_extent_item *file_extent_item;
+
+
+ if (argc != 2) {
+ fprintf(stderr, "Usage inode inode_num\n");
+ return;
+ }
+ inode_key.objectid = atoll(argv[1]);
+ inode_key.type = BTRFS_INODE_ITEM_KEY;
+ inode_key.offset = 0;
+
+ path = btrfs_alloc_path();
+ btrfs_init_path(path);
+ trans = btrfs_start_transaction(current_fs_root, 1);
+
+ ret = btrfs_search_slot(trans, current_fs_root, &inode_key, path, 0, 0);
+ if (ret != 0) {
+ fprintf(stderr, "Failed get the inode details for %llu\n",
+ (unsigned long long)inode_key.objectid);
+ return;
+ }
+ leaf = path->nodes[0];
+ inode_item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_inode_item);
+ dump_inode_details(inode_key.objectid, leaf, inode_item);
+ inode_i_size = btrfs_inode_size(leaf, inode_item);
+ btrfs_release_path(current_fs_root, path);
+
+ /* get the file extent details */
+ offset = 0;
+ /* Dump header */
+ printf("Extent details:\n");
+ printf("[%15s - %15s (%15s)]\t->\t%15s (%15s)\n",
+ "Logical offset",
+ "End offset",
+ "Extent Size",
+ "Disk bytenr",
+ "Actual disk size");
+ while (offset < inode_i_size) {
+ btrfs_init_path(path);
+ ret = btrfs_lookup_file_extent(trans, current_fs_root, path,
+ inode_key.objectid, offset, 0);
+ if (ret != 0) {
+ fprintf(stderr, "Not able to retrive extent information\n");
+ break;
+ }
+ leaf = path->nodes[0];
+ file_extent_item = btrfs_item_ptr(leaf, path->slots[0],
+ struct btrfs_file_extent_item);
+ dump_file_extent(offset, leaf, file_extent_item);
+ offset += btrfs_file_extent_num_bytes(leaf, file_extent_item);
+ btrfs_release_path(current_fs_root, path);
+ }
+ btrfs_commit_transaction(trans, current_fs_root);
+}
@@ -32,5 +32,8 @@ request do_dump_root_tree, "Show root tree",
request do_dump_chunk_tree, "Show btrfs chunk tree",
dump_chunk_tree;
+request do_print_inode, "Print inode details",
+ print_inode;
+
end;