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ee0326c0 | 1 | /* |
16421f6e DG |
2 | * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca> |
3 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
ee0326c0 DG |
4 | * |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version 2 | |
8 | * of the License, or (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | */ | |
16421f6e DG |
19 | |
20 | #include <sys/ioctl.h> | |
21 | ||
22 | #include "kernel-ioctl.h" | |
23 | #include "libkernelctl.h" | |
16421f6e | 24 | |
f3ed775e DG |
25 | int kernctl_buffer_flush(int fd) |
26 | { | |
27 | return ioctl(fd, RING_BUFFER_FLUSH); | |
28 | } | |
29 | ||
30 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
16421f6e | 31 | { |
9cb98350 | 32 | return ioctl(fd, LTTNG_KERNEL_CHANNEL, chops); |
16421f6e DG |
33 | } |
34 | ||
9cb98350 | 35 | int kernctl_create_event(int fd, struct lttng_kernel_event *ev) |
16421f6e | 36 | { |
9cb98350 | 37 | return ioctl(fd, LTTNG_KERNEL_EVENT, ev); |
16421f6e DG |
38 | } |
39 | ||
40 | int kernctl_create_session(int fd) | |
41 | { | |
9cb98350 | 42 | return ioctl(fd, LTTNG_KERNEL_SESSION); |
16421f6e DG |
43 | } |
44 | ||
45 | int kernctl_create_stream(int fd) | |
46 | { | |
9cb98350 | 47 | return ioctl(fd, LTTNG_KERNEL_STREAM); |
16421f6e DG |
48 | } |
49 | ||
f3ed775e DG |
50 | /* Enable event, channel and session ioctl */ |
51 | int kernctl_enable(int fd) | |
52 | { | |
53 | return ioctl(fd, LTTNG_KERNEL_ENABLE); | |
54 | } | |
55 | ||
56 | /* Disable event, channel and session ioctl */ | |
57 | int kernctl_disable(int fd) | |
58 | { | |
59 | return ioctl(fd, LTTNG_KERNEL_DISABLE); | |
60 | } | |
61 | ||
16421f6e DG |
62 | /* returns the maximum size for sub-buffers. */ |
63 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
64 | { | |
65 | return ioctl(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len); | |
66 | } | |
67 | ||
68 | /* returns the length to mmap. */ | |
69 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
70 | { | |
71 | return ioctl(fd, RING_BUFFER_GET_MMAP_LEN, len); | |
72 | } | |
73 | ||
74 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
75 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
76 | { | |
77 | return ioctl(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off); | |
78 | } | |
79 | ||
80 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
81 | int kernctl_get_next_subbuf(int fd) | |
82 | { | |
83 | return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF); | |
84 | } | |
85 | ||
86 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
87 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
88 | { | |
89 | return ioctl(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len); | |
90 | } | |
91 | ||
92 | /* Get exclusive read access to the specified sub-buffer position */ | |
93 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
94 | { | |
95 | return ioctl(fd, RING_BUFFER_GET_SUBBUF, len); | |
96 | } | |
97 | ||
98 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
99 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
100 | { | |
101 | return ioctl(fd, RING_BUFFER_GET_SUBBUF_SIZE, len); | |
102 | } | |
103 | ||
d4a1283e | 104 | /* open the metadata global channel */ |
f3ed775e | 105 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) |
d4a1283e | 106 | { |
9cb98350 | 107 | return ioctl(fd, LTTNG_KERNEL_METADATA, chops); |
d4a1283e JD |
108 | } |
109 | ||
16421f6e DG |
110 | /* Release exclusive sub-buffer access, move consumer forward. */ |
111 | int kernctl_put_next_subbuf(int fd) | |
112 | { | |
113 | return ioctl(fd, RING_BUFFER_PUT_NEXT_SUBBUF); | |
114 | } | |
115 | ||
116 | /* Release exclusive sub-buffer access */ | |
117 | int kernctl_put_subbuf(int fd) | |
118 | { | |
119 | return ioctl(fd, RING_BUFFER_PUT_SUBBUF); | |
120 | } | |
121 | ||
122 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
123 | int kernctl_snapshot(int fd) | |
124 | { | |
125 | return ioctl(fd, RING_BUFFER_SNAPSHOT); | |
126 | } | |
127 | ||
128 | /* Get the consumer position (iteration start) */ | |
129 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
130 | { | |
131 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos); | |
132 | } | |
133 | ||
134 | /* Get the producer position (iteration end) */ | |
135 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
136 | { | |
137 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos); | |
138 | } | |
139 | ||
140 | int kernctl_start_session(int fd) | |
141 | { | |
9cb98350 | 142 | return ioctl(fd, LTTNG_KERNEL_SESSION_START); |
16421f6e DG |
143 | } |
144 | ||
145 | int kernctl_stop_session(int fd) | |
146 | { | |
9cb98350 | 147 | return ioctl(fd, LTTNG_KERNEL_SESSION_STOP); |
16421f6e DG |
148 | } |
149 | ||
8d609afd JD |
150 | int kernctl_tracepoint_list(int fd) |
151 | { | |
152 | return ioctl(fd, LTTNG_KERNEL_TRACEPOINT_LIST); | |
153 | } | |
154 | ||
155 | int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v) | |
156 | { | |
157 | return ioctl(fd, LTTNG_KERNEL_TRACER_VERSION, v); | |
158 | } | |
f3ed775e DG |
159 | |
160 | int kernctl_wait_quiescent(int fd) | |
161 | { | |
162 | return ioctl(fd, LTTNG_KERNEL_WAIT_QUIESCENT); | |
163 | } |