Commit | Line | Data |
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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 | 4 | * |
d14d33bf AM |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License, version 2 only, | |
7 | * as published by the Free Software Foundation. | |
ee0326c0 DG |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
d14d33bf AM |
14 | * You should have received a copy of the GNU General Public License along |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
ee0326c0 | 17 | */ |
16421f6e | 18 | |
95ba0f2f | 19 | #define __USE_LINUX_IOCTL_DEFS |
16421f6e DG |
20 | #include <sys/ioctl.h> |
21 | ||
10a8a223 | 22 | #include "kernel-ctl.h" |
16421f6e | 23 | #include "kernel-ioctl.h" |
16421f6e | 24 | |
964ccb60 | 25 | int kernctl_create_session(int fd) |
d65106b1 | 26 | { |
964ccb60 | 27 | return ioctl(fd, LTTNG_KERNEL_SESSION); |
d65106b1 DG |
28 | } |
29 | ||
964ccb60 MD |
30 | /* open the metadata global channel */ |
31 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) | |
f3ed775e | 32 | { |
964ccb60 | 33 | return ioctl(fd, LTTNG_KERNEL_METADATA, chops); |
f3ed775e DG |
34 | } |
35 | ||
36 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
16421f6e | 37 | { |
9cb98350 | 38 | return ioctl(fd, LTTNG_KERNEL_CHANNEL, chops); |
16421f6e DG |
39 | } |
40 | ||
964ccb60 | 41 | int kernctl_create_stream(int fd) |
16421f6e | 42 | { |
964ccb60 | 43 | return ioctl(fd, LTTNG_KERNEL_STREAM); |
16421f6e DG |
44 | } |
45 | ||
964ccb60 | 46 | int kernctl_create_event(int fd, struct lttng_kernel_event *ev) |
16421f6e | 47 | { |
964ccb60 | 48 | return ioctl(fd, LTTNG_KERNEL_EVENT, ev); |
16421f6e DG |
49 | } |
50 | ||
964ccb60 | 51 | int kernctl_add_context(int fd, struct lttng_kernel_context *ctx) |
16421f6e | 52 | { |
964ccb60 | 53 | return ioctl(fd, LTTNG_KERNEL_CONTEXT, ctx); |
16421f6e DG |
54 | } |
55 | ||
964ccb60 | 56 | |
f3ed775e DG |
57 | /* Enable event, channel and session ioctl */ |
58 | int kernctl_enable(int fd) | |
59 | { | |
60 | return ioctl(fd, LTTNG_KERNEL_ENABLE); | |
61 | } | |
62 | ||
63 | /* Disable event, channel and session ioctl */ | |
64 | int kernctl_disable(int fd) | |
65 | { | |
66 | return ioctl(fd, LTTNG_KERNEL_DISABLE); | |
67 | } | |
68 | ||
964ccb60 | 69 | int kernctl_start_session(int fd) |
16421f6e | 70 | { |
964ccb60 MD |
71 | return ioctl(fd, LTTNG_KERNEL_SESSION_START); |
72 | } | |
73 | ||
74 | int kernctl_stop_session(int fd) | |
75 | { | |
76 | return ioctl(fd, LTTNG_KERNEL_SESSION_STOP); | |
16421f6e DG |
77 | } |
78 | ||
964ccb60 MD |
79 | |
80 | int kernctl_tracepoint_list(int fd) | |
81 | { | |
82 | return ioctl(fd, LTTNG_KERNEL_TRACEPOINT_LIST); | |
83 | } | |
84 | ||
85 | int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v) | |
86 | { | |
87 | return ioctl(fd, LTTNG_KERNEL_TRACER_VERSION, v); | |
88 | } | |
89 | ||
90 | int kernctl_wait_quiescent(int fd) | |
91 | { | |
92 | return ioctl(fd, LTTNG_KERNEL_WAIT_QUIESCENT); | |
93 | } | |
94 | ||
95 | int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate) | |
96 | { | |
97 | return ioctl(fd, LTTNG_KERNEL_CALIBRATE, calibrate); | |
98 | } | |
99 | ||
100 | ||
101 | int kernctl_buffer_flush(int fd) | |
102 | { | |
103 | return ioctl(fd, RING_BUFFER_FLUSH); | |
104 | } | |
105 | ||
106 | ||
107 | /* Buffer operations */ | |
108 | ||
109 | /* For mmap mode, readable without "get" operation */ | |
110 | ||
16421f6e DG |
111 | /* returns the length to mmap. */ |
112 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
113 | { | |
114 | return ioctl(fd, RING_BUFFER_GET_MMAP_LEN, len); | |
115 | } | |
116 | ||
964ccb60 MD |
117 | /* returns the maximum size for sub-buffers. */ |
118 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
119 | { | |
120 | return ioctl(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len); | |
121 | } | |
122 | ||
123 | /* | |
124 | * For mmap mode, operate on the current packet (between get/put or | |
125 | * get_next/put_next). | |
126 | */ | |
127 | ||
16421f6e DG |
128 | /* returns the offset of the subbuffer belonging to the mmap reader. */ |
129 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
130 | { | |
131 | return ioctl(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off); | |
132 | } | |
133 | ||
964ccb60 MD |
134 | /* returns the size of the current sub-buffer, without padding (for mmap). */ |
135 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
16421f6e | 136 | { |
964ccb60 | 137 | return ioctl(fd, RING_BUFFER_GET_SUBBUF_SIZE, len); |
16421f6e DG |
138 | } |
139 | ||
140 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
141 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
142 | { | |
143 | return ioctl(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len); | |
144 | } | |
145 | ||
964ccb60 MD |
146 | /* Get exclusive read access to the next sub-buffer that can be read. */ |
147 | int kernctl_get_next_subbuf(int fd) | |
16421f6e | 148 | { |
964ccb60 | 149 | return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF); |
16421f6e DG |
150 | } |
151 | ||
d4a1283e | 152 | |
16421f6e DG |
153 | /* Release exclusive sub-buffer access, move consumer forward. */ |
154 | int kernctl_put_next_subbuf(int fd) | |
155 | { | |
156 | return ioctl(fd, RING_BUFFER_PUT_NEXT_SUBBUF); | |
157 | } | |
158 | ||
964ccb60 | 159 | /* snapshot */ |
16421f6e DG |
160 | |
161 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
162 | int kernctl_snapshot(int fd) | |
163 | { | |
164 | return ioctl(fd, RING_BUFFER_SNAPSHOT); | |
165 | } | |
166 | ||
167 | /* Get the consumer position (iteration start) */ | |
168 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
169 | { | |
170 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos); | |
171 | } | |
172 | ||
173 | /* Get the producer position (iteration end) */ | |
174 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
175 | { | |
176 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos); | |
177 | } | |
178 | ||
964ccb60 MD |
179 | /* Get exclusive read access to the specified sub-buffer position */ |
180 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
f3ed775e | 181 | { |
964ccb60 | 182 | return ioctl(fd, RING_BUFFER_GET_SUBBUF, len); |
f3ed775e | 183 | } |
d0254c7c | 184 | |
964ccb60 MD |
185 | /* Release exclusive sub-buffer access */ |
186 | int kernctl_put_subbuf(int fd) | |
d0254c7c | 187 | { |
964ccb60 | 188 | return ioctl(fd, RING_BUFFER_PUT_SUBBUF); |
d0254c7c | 189 | } |
00e2e675 DG |
190 | |
191 | /* Set the stream_id */ | |
192 | int kernctl_set_stream_id(int fd, unsigned long *stream_id) | |
193 | { | |
194 | return ioctl(fd, RING_BUFFER_SET_STREAM_ID, stream_id); | |
195 | } | |
196 | ||
197 | /* Get the offset of the stream_id in the packet header */ | |
198 | int kernctl_get_net_stream_id_offset(int fd, unsigned long *offset) | |
199 | { | |
200 | return ioctl(fd, LTTNG_KERNEL_STREAM_ID_OFFSET, offset); | |
201 | ||
202 | } |