Clean-up: sessiond: cmd_enable_channel_internal
[lttng-tools.git] / src / common / fd-tracker / inode.h
1 /*
2 * Copyright (C) 2020 Jérémie Galarneau <jeremie.galarneau@efficios.com>
3 *
4 * SPDX-License-Identifier: GPL-2.0-only
5 *
6 */
7
8 #ifndef FD_TRACKER_INODE_H
9 #define FD_TRACKER_INODE_H
10
11 #include <common/compat/directory-handle.h>
12 #include <stdbool.h>
13
14 struct lttng_inode;
15 struct lttng_inode_registry;
16 struct lttng_unlinked_file_directory;
17 struct lttng_directory_handle;
18
19 /*
20 * The unlinked file pool is protected by the fd-tracker's lock.
21 *
22 * NOTE: the unlinked file pool can use a single file desriptor when unlinked
23 * files are present in the pool. This file descriptor is not accounted-for
24 * by the fd-tracker. Users of the fd-tracker should account for this extra
25 * file descriptor.
26 */
27 struct lttng_unlinked_file_pool *lttng_unlinked_file_pool_create(
28 const char *path);
29
30 void lttng_unlinked_file_pool_destroy(
31 struct lttng_unlinked_file_pool *pool);
32
33 /* The inode registry is protected by the fd-tracker's lock. */
34 struct lttng_inode_registry *lttng_inode_registry_create(void);
35
36 struct lttng_inode *lttng_inode_registry_get_inode(
37 struct lttng_inode_registry *registry,
38 struct lttng_directory_handle *handle,
39 const char *path,
40 int fd,
41 struct lttng_unlinked_file_pool *pool);
42
43 void lttng_inode_registry_destroy(struct lttng_inode_registry *registry);
44
45 void lttng_inode_borrow_location(struct lttng_inode *inode,
46 const struct lttng_directory_handle **out_directory_handle,
47 const char **out_path);
48
49 /* Returns a new reference to the inode's location directory handle. */
50 struct lttng_directory_handle *lttng_inode_get_location_directory_handle(
51 struct lttng_inode *inode);
52
53 int lttng_inode_rename(struct lttng_inode *inode,
54 struct lttng_directory_handle *old_directory_handle,
55 const char *old_path,
56 struct lttng_directory_handle *new_directory_handle,
57 const char *new_path,
58 bool overwrite);
59
60 int lttng_inode_unlink(struct lttng_inode *inode);
61
62 void lttng_inode_put(struct lttng_inode *inode);
63
64 #endif /* FD_TRACKER_INODE_H */
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