* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
-#ifndef SEND_UTILS_H_
-#define SEND_UTILS_H_
+
+#ifndef __BTRFS_SEND_UTILS_H__
+#define __BTRFS_SEND_UTILS_H__
#if BTRFS_FLAT_INCLUDES
+#include "kerncompat.h"
#include "ctree.h"
#include "rbtree.h"
#else
+#include <btrfs/kerncompat.h>
#include <btrfs/ctree.h>
#include <btrfs/rbtree.h>
#endif /* BTRFS_FLAT_INCLUDES */
extern "C" {
#endif
+/*
+ * Compatibility code for kernels < 3.12; the UUID tree is not available there
+ * and we have to do the slow search. This should be deprecated someday.
+ */
+#define BTRFS_COMPAT_SEND_NO_UUID_TREE 1
+
enum subvol_search_type {
subvol_search_by_root_id,
subvol_search_by_uuid,
};
struct subvol_info {
+#ifdef BTRFS_COMPAT_SEND_NO_UUID_TREE
struct rb_node rb_root_id_node;
struct rb_node rb_local_node;
struct rb_node rb_received_node;
struct rb_node rb_path_node;
+#endif
+
u64 root_id;
u8 uuid[BTRFS_UUID_SIZE];
u8 parent_uuid[BTRFS_UUID_SIZE];
};
struct subvol_uuid_search {
+ int mnt_fd;
+#ifdef BTRFS_COMPAT_SEND_NO_UUID_TREE
+ int uuid_tree_existed;
+
struct rb_root root_id_subvols;
struct rb_root local_subvols;
struct rb_root received_subvols;
struct rb_root path_subvols;
+#endif
};
int subvol_uuid_search_init(int mnt_fd, struct subvol_uuid_search *s);
+void subvol_uuid_search_finit(struct subvol_uuid_search *s);
struct subvol_info *subvol_uuid_search(struct subvol_uuid_search *s,
u64 root_id, const u8 *uuid, u64 transid,
const char *path,
void subvol_uuid_search_add(struct subvol_uuid_search *s,
struct subvol_info *si);
+int btrfs_subvolid_resolve(int fd, char *path, size_t path_len, u64 subvol_id);
-
+/*
+ * DEPRECATED: the functions path_cat and path_cat3 are unsafe and should not
+ * be used, use the _out variants and always check the return code.
+ */
+__attribute__((deprecated))
char *path_cat(const char *p1, const char *p2);
+__attribute__((deprecated))
char *path_cat3(const char *p1, const char *p2, const char *p3);
+int path_cat_out(char *out, const char *p1, const char *p2);
+int path_cat3_out(char *out, const char *p1, const char *p2, const char *p3);
+
#ifdef __cplusplus
}
#endif
-#endif /* SEND_UTILS_H_ */
+#endif