btrfs-progs: close all fs_devices before exit in some commands

[platform/upstream/btrfs-progs.git] / disk-io.h

diff --git a/disk-io.h b/disk-io.h
index ca6af2d..d3e3aaa 100644 (file)
--- a/disk-io.h
+++ b/disk-io.h
@@ -16,8 +16,11 @@
  * Boston, MA 021110-1307, USA.
  */
 
-#ifndef __DISKIO__
-#define __DISKIO__
+#ifndef __BTRFS_DISK_IO_H__
+#define __BTRFS_DISK_IO_H__
+
+#include "kerncompat.h"
+#include "ctree.h"
 
 #define BTRFS_SUPER_INFO_OFFSET (64 * 1024)
 #define BTRFS_SUPER_INFO_SIZE 4096
@@ -26,12 +29,31 @@
 #define BTRFS_SUPER_MIRROR_SHIFT 12
 
 enum btrfs_open_ctree_flags {
-       OPEN_CTREE_WRITES               = 1,
-       OPEN_CTREE_PARTIAL              = 2,
-       OPEN_CTREE_BACKUP_ROOT          = 4,
-       OPEN_CTREE_RECOVER_SUPER        = 8,
-       OPEN_CTREE_RESTORE              = 16,
-       OPEN_CTREE_NO_BLOCK_GROUPS      = 32,
+       OPEN_CTREE_WRITES               = (1 << 0),
+       OPEN_CTREE_PARTIAL              = (1 << 1),
+       OPEN_CTREE_BACKUP_ROOT          = (1 << 2),
+       OPEN_CTREE_RECOVER_SUPER        = (1 << 3),
+       OPEN_CTREE_RESTORE              = (1 << 4),
+       OPEN_CTREE_NO_BLOCK_GROUPS      = (1 << 5),
+       OPEN_CTREE_EXCLUSIVE            = (1 << 6),
+       OPEN_CTREE_NO_DEVICES           = (1 << 7),
+       /*
+        * Don't print error messages if bytenr or checksums do not match in
+        * tree block headers. Turn on by OPEN_CTREE_SUPPRESS_ERROR
+        */
+       OPEN_CTREE_SUPPRESS_CHECK_BLOCK_ERRORS  = (1 << 8),
+       /* Return chunk root */
+       __OPEN_CTREE_RETURN_CHUNK_ROOT  = (1 << 9),
+       OPEN_CTREE_CHUNK_ROOT_ONLY      = OPEN_CTREE_PARTIAL +
+                                         OPEN_CTREE_SUPPRESS_CHECK_BLOCK_ERRORS +
+                                         __OPEN_CTREE_RETURN_CHUNK_ROOT,
+       /*
+        * TODO: cleanup: Split the open_ctree_flags into more indepent
+        * tree bits.
+        * Like split PARTIAL into SKIP_CSUM/SKIP_EXTENT
+        */
+
+       OPEN_CTREE_IGNORE_FSID_MISMATCH = (1 << 10)
 };
 
 static inline u64 btrfs_sb_offset(int mirror)
@@ -47,8 +69,10 @@ struct btrfs_device;
 int read_whole_eb(struct btrfs_fs_info *info, struct extent_buffer *eb, int mirror);
 struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
                                      u32 blocksize, u64 parent_transid);
-int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
-                        u64 parent_transid);
+int read_extent_data(struct btrfs_root *root, char *data, u64 logical,
+                    u64 *len, int mirror);
+void readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
+                         u64 parent_transid);
 struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
                                                   u64 bytenr, u32 blocksize);
 
@@ -67,7 +91,7 @@ void btrfs_release_all_roots(struct btrfs_fs_info *fs_info);
 void btrfs_cleanup_all_caches(struct btrfs_fs_info *fs_info);
 int btrfs_scan_fs_devices(int fd, const char *path,
                          struct btrfs_fs_devices **fs_devices, u64 sb_bytenr,
-                         int run_ioctl);
+                         int super_recover, int skip_devices);
 int btrfs_setup_chunk_tree_and_device_map(struct btrfs_fs_info *fs_info);
 
 struct btrfs_root *open_ctree(const char *filename, u64 sb_bytenr,
@@ -81,7 +105,8 @@ int close_ctree(struct btrfs_root *root);
 int write_all_supers(struct btrfs_root *root);
 int write_ctree_super(struct btrfs_trans_handle *trans,
                      struct btrfs_root *root);
-int btrfs_read_dev_super(int fd, struct btrfs_super_block *sb, u64 sb_bytenr);
+int btrfs_read_dev_super(int fd, struct btrfs_super_block *sb, u64 sb_bytenr,
+                        int super_recover);
 int btrfs_map_bh_to_logical(struct btrfs_root *root, struct extent_buffer *bh,
                            u64 logical);
 struct extent_buffer *btrfs_find_tree_block(struct btrfs_root *root,
@@ -106,9 +131,13 @@ int csum_tree_block_size(struct extent_buffer *buf, u16 csum_sectorsize,
                         int verify);
 int verify_tree_block_csum_silent(struct extent_buffer *buf, u16 csum_size);
 int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid);
+int write_tree_block(struct btrfs_trans_handle *trans,
+                    struct btrfs_root *root,
+                    struct extent_buffer *eb);
 int write_and_map_eb(struct btrfs_trans_handle *trans, struct btrfs_root *root,
                     struct extent_buffer *eb);
-#endif
 
 /* raid6.c */
 void raid6_gen_syndrome(int disks, size_t bytes, void **ptrs);
+
+#endif