Allow run-as to generate filter bytecode.
[lttng-tools.git] / src / common / runas.h
1 #ifndef _RUNAS_H
2 #define _RUNAS_H
3
4 /*
5 * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
6 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
7 *
8 * SPDX-License-Identifier: GPL-2.0-only
9 *
10 */
11
12 #include <stdint.h>
13 #include <sys/types.h>
14 #include <unistd.h>
15
16 #include <common/macros.h>
17 #include <common/sessiond-comm/sessiond-comm.h>
18
19 /*
20 * The run-as process is launched by forking without an exec*() call. This means
21 * that any resource allocated before the run-as worker is launched should be
22 * cleaned-up after the fork(). This callback allows the user to perform this
23 * clean-up.
24 *
25 * Note that the callback will _not_ be invoked if the LTTNG_DEBUG_NOCLONE
26 * environment variable is set as the clean-up is not needed (and may not be
27 * expected).
28 *
29 * A negative return value will cause the run-as process to exit with a non-zero
30 * value.
31 */
32 typedef int (*post_fork_cleanup_cb)(void *user_data);
33
34 LTTNG_HIDDEN
35 int run_as_mkdir_recursive(const char *path, mode_t mode, uid_t uid, gid_t gid);
36 LTTNG_HIDDEN
37 int run_as_mkdirat_recursive(int dirfd, const char *path, mode_t mode,
38 uid_t uid, gid_t gid);
39 LTTNG_HIDDEN
40 int run_as_mkdir(const char *path, mode_t mode, uid_t uid, gid_t gid);
41 LTTNG_HIDDEN
42 int run_as_mkdirat(int dirfd, const char *path, mode_t mode,
43 uid_t uid, gid_t gid);
44 LTTNG_HIDDEN
45 int run_as_open(const char *path, int flags, mode_t mode, uid_t uid, gid_t gid);
46 LTTNG_HIDDEN
47 int run_as_openat(int dirfd, const char *filename, int flags, mode_t mode,
48 uid_t uid, gid_t gid);
49 LTTNG_HIDDEN
50 int run_as_unlink(const char *path, uid_t uid, gid_t gid);
51 LTTNG_HIDDEN
52 int run_as_unlinkat(int dirfd, const char *filename, uid_t uid, gid_t gid);
53 LTTNG_HIDDEN
54 int run_as_rmdir(const char *path, uid_t uid, gid_t gid);
55 LTTNG_HIDDEN
56 int run_as_rmdir_recursive(const char *path, uid_t uid, gid_t gid, int flags);
57 LTTNG_HIDDEN
58 int run_as_rmdirat(int dirfd, const char *path, uid_t uid, gid_t gid);
59 LTTNG_HIDDEN
60 int run_as_rmdirat_recursive(int dirfd, const char *path, uid_t uid, gid_t gid, int flags);
61 LTTNG_HIDDEN
62 int run_as_rename(const char *old, const char *new, uid_t uid, gid_t gid);
63 LTTNG_HIDDEN
64 int run_as_renameat(int old_dirfd, const char *old,
65 int new_dirfd, const char *new, uid_t uid, gid_t gid);
66 LTTNG_HIDDEN
67 int run_as_extract_elf_symbol_offset(int fd, const char* function,
68 uid_t uid, gid_t gid, uint64_t *offset);
69 LTTNG_HIDDEN
70 int run_as_extract_sdt_probe_offsets(int fd, const char *provider_name,
71 const char* probe_name, uid_t uid, gid_t gid,
72 uint64_t **offsets, uint32_t *num_offset);
73 LTTNG_HIDDEN
74 int run_as_generate_filter_bytecode(const char *filter_expression,
75 uid_t uid,
76 gid_t gid,
77 struct lttng_filter_bytecode **bytecode);
78 LTTNG_HIDDEN
79 int run_as_create_worker(const char *procname,
80 post_fork_cleanup_cb clean_up_func, void *clean_up_user_data);
81 LTTNG_HIDDEN
82 void run_as_destroy_worker(void);
83
84 #endif /* _RUNAS_H */
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