#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
#include <unistd.h>
#include "kerncompat.h"
#include "radix-tree.h"
int keep_running = 1;
struct btrfs_super_block super;
-static u64 dir_oid = 44556;
+static u64 dir_oid = 0;
static u64 file_oid = 33778;
static int find_num(struct radix_tree_root *root, unsigned long *num_ret,
return 0;
}
+static void initial_inode_init(struct btrfs_root *root,
+ struct btrfs_inode_item *inode_item)
+{
+ memset(inode_item, 0, sizeof(*inode_item));
+ btrfs_set_inode_generation(inode_item, root->fs_info->generation);
+ btrfs_set_inode_mode(inode_item, S_IFREG | 0700);
+}
+
static int ins_one(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix)
{
int ret;
char buf[128];
unsigned long oid;
+ u64 objectid;
struct btrfs_path path;
+ struct btrfs_key inode_map;
+ struct btrfs_inode_item inode_item;
find_num(radix, &oid, 0);
sprintf(buf, "str-%lu", oid);
+ ret = btrfs_find_free_objectid(trans, root, dir_oid + 1, &objectid);
+ if (ret)
+ goto error;
+
+ inode_map.objectid = objectid;
+ inode_map.flags = 0;
+ inode_map.offset = 0;
+
+ ret = btrfs_insert_inode_map(trans, root, objectid, &inode_map);
+ if (ret)
+ goto error;
+
+ initial_inode_init(root, &inode_item);
+ ret = btrfs_insert_inode(trans, root, objectid, &inode_item);
+ if (ret)
+ goto error;
ret = btrfs_insert_dir_item(trans, root, buf, strlen(buf), dir_oid,
- file_oid, 1);
+ objectid, 1);
if (ret)
goto error;
return 0;
}
+static int del_dir_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct radix_tree_root *radix,
+ unsigned long radix_index,
+ struct btrfs_path *path)
+{
+ int ret;
+ unsigned long *ptr;
+ u64 file_objectid;
+ struct btrfs_dir_item *di;
+
+ /* find the inode number of the file */
+ di = btrfs_item_ptr(&path->nodes[0]->leaf, path->slots[0],
+ struct btrfs_dir_item);
+ file_objectid = btrfs_dir_objectid(di);
+
+ /* delete the directory item */
+ ret = btrfs_del_item(trans, root, path);
+ if (ret)
+ goto out_release;
+ btrfs_release_path(root, path);
+
+ /* delete the inode */
+ btrfs_init_path(path);
+ ret = btrfs_lookup_inode(trans, root, path, file_objectid, -1);
+ if (ret)
+ goto out_release;
+ ret = btrfs_del_item(trans, root, path);
+ if (ret)
+ goto out_release;
+ btrfs_release_path(root, path);
+
+ /* delete the inode mapping */
+ btrfs_init_path(path);
+ ret = btrfs_lookup_inode_map(trans, root, path, file_objectid, -1);
+ if (ret)
+ goto out_release;
+ ret = btrfs_del_item(trans, root->fs_info->inode_root, path);
+ if (ret)
+ goto out_release;
+
+ if (root->fs_info->last_inode_alloc > file_objectid)
+ root->fs_info->last_inode_alloc = file_objectid;
+ btrfs_release_path(root, path);
+ ptr = radix_tree_delete(radix, radix_index);
+ if (!ptr) {
+ ret = -5555;
+ goto out;
+ }
+ return 0;
+out_release:
+ btrfs_release_path(root, path);
+out:
+ printf("failed to delete %lu %d\n", radix_index, ret);
+ return -1;
+}
+
static int del_one(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct radix_tree_root *radix)
{
char buf[128];
unsigned long oid;
struct btrfs_path path;
- unsigned long *ptr;
ret = find_num(radix, &oid, 1);
if (ret < 0)
strlen(buf), -1);
if (ret)
goto out_release;
- ret = btrfs_del_item(trans, root, &path);
+
+ ret = del_dir_item(trans, root, radix, oid, &path);
if (ret)
goto out_release;
- btrfs_release_path(root, &path);
- ptr = radix_tree_delete(radix, oid);
- if (!ptr) {
- ret = -5555;
- goto out;
- }
- return 0;
+ return ret;
out_release:
btrfs_release_path(root, &path);
-out:
printf("failed to delete %lu %d\n", oid, ret);
return -1;
}
char buf[128];
int ret;
unsigned long oid;
+ u64 objectid;
+ struct btrfs_dir_item *di;
ret = find_num(radix, &oid, 1);
if (ret < 0)
btrfs_init_path(&path);
ret = btrfs_lookup_dir_item(trans, root, &path, dir_oid, buf,
strlen(buf), 0);
+ if (!ret) {
+ di = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0],
+ struct btrfs_dir_item);
+ objectid = btrfs_dir_objectid(di);
+ btrfs_release_path(root, &path);
+ btrfs_init_path(&path);
+ ret = btrfs_lookup_inode_map(trans, root, &path, objectid, 0);
+ }
btrfs_release_path(root, &path);
if (ret) {
printf("unable to find key %lu\n", oid);
u32 found_len;
int ret;
int slot;
- int *ptr;
int count = 0;
char buf[128];
struct btrfs_dir_item *di;
BUG_ON(found_len > 128);
buf[found_len] = '\0';
found = atoi(buf + 4);
- ret = btrfs_del_item(trans, root, &path);
+ ret = del_dir_item(trans, root, radix, found, &path);
count++;
if (ret) {
fprintf(stderr,
found);
return -1;
}
- btrfs_release_path(root, &path);
- ptr = radix_tree_delete(radix, found);
- if (!ptr)
- goto error;
if (!keep_running)
break;
}
return 0;
-error:
fprintf(stderr, "failed to delete from the radix %lu\n", found);
return -1;
}
struct btrfs_trans_handle *trans;
radix_tree_init();
- printf("removing old tree\n");
- unlink("dbfile");
- root = open_ctree("dbfile", &super);
+ root = open_ctree(av[ac-1], &super);
trans = btrfs_start_transaction(root, 1);
+ dir_oid = btrfs_super_root_dir(&super);
+
signal(SIGTERM, sigstopper);
signal(SIGINT, sigstopper);
- for (i = 1 ; i < ac ; i++) {
+ for (i = 1 ; i < ac - 1; i++) {
if (strcmp(av[i], "-i") == 0) {
initial_only = 1;
} else if (strcmp(av[i], "-c") == 0) {
projects / platform / upstream / btrfs-progs.git / blobdiff