| 1 | /* |
| 2 | * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca> |
| 3 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0-only |
| 6 | * |
| 7 | */ |
| 8 | |
| 9 | #ifndef _LTTNG_KERNEL_CTL_H |
| 10 | #define _LTTNG_KERNEL_CTL_H |
| 11 | |
| 12 | #include <lttng/lttng.h> |
| 13 | #include <common/lttng-kernel.h> |
| 14 | #include <common/lttng-kernel-old.h> |
| 15 | #include <common/sessiond-comm/sessiond-comm.h> /* for struct lttng_filter_bytecode */ |
| 16 | |
| 17 | int kernctl_create_session(int fd); |
| 18 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops); |
| 19 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops); |
| 20 | int kernctl_create_stream(int fd); |
| 21 | int kernctl_create_event(int fd, struct lttng_kernel_event *ev); |
| 22 | int kernctl_add_context(int fd, struct lttng_kernel_context *ctx); |
| 23 | |
| 24 | int kernctl_enable(int fd); |
| 25 | int kernctl_disable(int fd); |
| 26 | int kernctl_start_session(int fd); |
| 27 | int kernctl_stop_session(int fd); |
| 28 | |
| 29 | /* Apply on event FD */ |
| 30 | int kernctl_filter(int fd, struct lttng_filter_bytecode *filter); |
| 31 | int kernctl_add_callsite(int fd, struct lttng_kernel_event_callsite *callsite); |
| 32 | |
| 33 | int kernctl_tracepoint_list(int fd); |
| 34 | int kernctl_syscall_list(int fd); |
| 35 | int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v); |
| 36 | int kernctl_tracer_abi_version(int fd, struct lttng_kernel_tracer_abi_version *v); |
| 37 | int kernctl_wait_quiescent(int fd); |
| 38 | |
| 39 | /* |
| 40 | * kernctl_syscall_mask - Get syscall mask associated to a channel FD. |
| 41 | * |
| 42 | * The parameter @syscall_mask should initially be either NULL or point |
| 43 | * to memory allocated with malloc(3) or realloc(3). When the function |
| 44 | * returns, it will point to a memory area of the size required for the |
| 45 | * bitmask (using realloc(3) to resize the memory). |
| 46 | * |
| 47 | * It returns 0 if OK, -1 on error. In all cases (error and OK), |
| 48 | * @syscall_mask should be freed by the caller with free(3). |
| 49 | */ |
| 50 | int kernctl_syscall_mask(int fd, char **syscall_mask, |
| 51 | uint32_t *nr_bits); |
| 52 | |
| 53 | /* Process ID tracking can be applied to session FD */ |
| 54 | int kernctl_track_pid(int fd, int pid); |
| 55 | int kernctl_untrack_pid(int fd, int pid); |
| 56 | int kernctl_list_tracker_pids(int fd); |
| 57 | |
| 58 | int kernctl_track_id(int fd, enum lttng_process_attr process_attr, int id); |
| 59 | int kernctl_untrack_id(int fd, enum lttng_process_attr process_attr, int id); |
| 60 | int kernctl_list_tracker_ids(int fd, enum lttng_process_attr process_attr); |
| 61 | |
| 62 | int kernctl_session_regenerate_metadata(int fd); |
| 63 | int kernctl_session_regenerate_statedump(int fd); |
| 64 | int kernctl_session_set_name(int fd, const char *name); |
| 65 | int kernctl_session_set_creation_time(int fd, time_t time); |
| 66 | |
| 67 | /* Buffer operations */ |
| 68 | |
| 69 | /* For mmap mode, readable without "get" operation */ |
| 70 | int kernctl_get_mmap_len(int fd, unsigned long *len); |
| 71 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len); |
| 72 | |
| 73 | /* |
| 74 | * For mmap mode, operate on the current packet (between get/put or |
| 75 | * get_next/put_next). |
| 76 | */ |
| 77 | int kernctl_get_mmap_read_offset(int fd, unsigned long *len); |
| 78 | int kernctl_get_subbuf_size(int fd, unsigned long *len); |
| 79 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len); |
| 80 | |
| 81 | int kernctl_get_next_subbuf(int fd); |
| 82 | int kernctl_put_next_subbuf(int fd); |
| 83 | |
| 84 | /* snapshot */ |
| 85 | int kernctl_snapshot(int fd); |
| 86 | int kernctl_snapshot_sample_positions(int fd); |
| 87 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos); |
| 88 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos); |
| 89 | int kernctl_get_subbuf(int fd, unsigned long *pos); |
| 90 | int kernctl_put_subbuf(int fd); |
| 91 | |
| 92 | int kernctl_buffer_flush(int fd); |
| 93 | int kernctl_buffer_flush_empty(int fd); |
| 94 | int kernctl_buffer_clear(int fd); |
| 95 | int kernctl_get_metadata_version(int fd, uint64_t *version); |
| 96 | int kernctl_metadata_cache_dump(int fd); |
| 97 | |
| 98 | /* index */ |
| 99 | int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin); |
| 100 | int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end); |
| 101 | int kernctl_get_events_discarded(int fd, uint64_t *events_discarded); |
| 102 | int kernctl_get_content_size(int fd, uint64_t *content_size); |
| 103 | int kernctl_get_packet_size(int fd, uint64_t *packet_size); |
| 104 | int kernctl_get_stream_id(int fd, uint64_t *stream_id); |
| 105 | int kernctl_get_current_timestamp(int fd, uint64_t *ts); |
| 106 | int kernctl_get_sequence_number(int fd, uint64_t *seq); |
| 107 | int kernctl_get_instance_id(int fd, uint64_t *seq); |
| 108 | |
| 109 | #endif /* _LTTNG_KERNEL_CTL_H */ |