| 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 */ |