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 DG |
18 | |
19 | #include <sys/ioctl.h> | |
20 | ||
10a8a223 | 21 | #include "kernel-ctl.h" |
16421f6e | 22 | #include "kernel-ioctl.h" |
16421f6e | 23 | |
964ccb60 | 24 | int kernctl_create_session(int fd) |
d65106b1 | 25 | { |
964ccb60 | 26 | return ioctl(fd, LTTNG_KERNEL_SESSION); |
d65106b1 DG |
27 | } |
28 | ||
964ccb60 MD |
29 | /* open the metadata global channel */ |
30 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) | |
f3ed775e | 31 | { |
964ccb60 | 32 | return ioctl(fd, LTTNG_KERNEL_METADATA, chops); |
f3ed775e DG |
33 | } |
34 | ||
35 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
16421f6e | 36 | { |
9cb98350 | 37 | return ioctl(fd, LTTNG_KERNEL_CHANNEL, chops); |
16421f6e DG |
38 | } |
39 | ||
964ccb60 | 40 | int kernctl_create_stream(int fd) |
16421f6e | 41 | { |
964ccb60 | 42 | return ioctl(fd, LTTNG_KERNEL_STREAM); |
16421f6e DG |
43 | } |
44 | ||
964ccb60 | 45 | int kernctl_create_event(int fd, struct lttng_kernel_event *ev) |
16421f6e | 46 | { |
964ccb60 | 47 | return ioctl(fd, LTTNG_KERNEL_EVENT, ev); |
16421f6e DG |
48 | } |
49 | ||
964ccb60 | 50 | int kernctl_add_context(int fd, struct lttng_kernel_context *ctx) |
16421f6e | 51 | { |
964ccb60 | 52 | return ioctl(fd, LTTNG_KERNEL_CONTEXT, ctx); |
16421f6e DG |
53 | } |
54 | ||
964ccb60 | 55 | |
f3ed775e DG |
56 | /* Enable event, channel and session ioctl */ |
57 | int kernctl_enable(int fd) | |
58 | { | |
59 | return ioctl(fd, LTTNG_KERNEL_ENABLE); | |
60 | } | |
61 | ||
62 | /* Disable event, channel and session ioctl */ | |
63 | int kernctl_disable(int fd) | |
64 | { | |
65 | return ioctl(fd, LTTNG_KERNEL_DISABLE); | |
66 | } | |
67 | ||
964ccb60 | 68 | int kernctl_start_session(int fd) |
16421f6e | 69 | { |
964ccb60 MD |
70 | return ioctl(fd, LTTNG_KERNEL_SESSION_START); |
71 | } | |
72 | ||
73 | int kernctl_stop_session(int fd) | |
74 | { | |
75 | return ioctl(fd, LTTNG_KERNEL_SESSION_STOP); | |
16421f6e DG |
76 | } |
77 | ||
964ccb60 MD |
78 | |
79 | int kernctl_tracepoint_list(int fd) | |
80 | { | |
81 | return ioctl(fd, LTTNG_KERNEL_TRACEPOINT_LIST); | |
82 | } | |
83 | ||
84 | int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v) | |
85 | { | |
86 | return ioctl(fd, LTTNG_KERNEL_TRACER_VERSION, v); | |
87 | } | |
88 | ||
89 | int kernctl_wait_quiescent(int fd) | |
90 | { | |
91 | return ioctl(fd, LTTNG_KERNEL_WAIT_QUIESCENT); | |
92 | } | |
93 | ||
94 | int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate) | |
95 | { | |
96 | return ioctl(fd, LTTNG_KERNEL_CALIBRATE, calibrate); | |
97 | } | |
98 | ||
99 | ||
100 | int kernctl_buffer_flush(int fd) | |
101 | { | |
102 | return ioctl(fd, RING_BUFFER_FLUSH); | |
103 | } | |
104 | ||
105 | ||
106 | /* Buffer operations */ | |
107 | ||
108 | /* For mmap mode, readable without "get" operation */ | |
109 | ||
16421f6e DG |
110 | /* returns the length to mmap. */ |
111 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
112 | { | |
113 | return ioctl(fd, RING_BUFFER_GET_MMAP_LEN, len); | |
114 | } | |
115 | ||
964ccb60 MD |
116 | /* returns the maximum size for sub-buffers. */ |
117 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
118 | { | |
119 | return ioctl(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len); | |
120 | } | |
121 | ||
122 | /* | |
123 | * For mmap mode, operate on the current packet (between get/put or | |
124 | * get_next/put_next). | |
125 | */ | |
126 | ||
16421f6e DG |
127 | /* returns the offset of the subbuffer belonging to the mmap reader. */ |
128 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
129 | { | |
130 | return ioctl(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off); | |
131 | } | |
132 | ||
964ccb60 MD |
133 | /* returns the size of the current sub-buffer, without padding (for mmap). */ |
134 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
16421f6e | 135 | { |
964ccb60 | 136 | return ioctl(fd, RING_BUFFER_GET_SUBBUF_SIZE, len); |
16421f6e DG |
137 | } |
138 | ||
139 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
140 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
141 | { | |
142 | return ioctl(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len); | |
143 | } | |
144 | ||
964ccb60 MD |
145 | /* Get exclusive read access to the next sub-buffer that can be read. */ |
146 | int kernctl_get_next_subbuf(int fd) | |
16421f6e | 147 | { |
964ccb60 | 148 | return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF); |
16421f6e DG |
149 | } |
150 | ||
d4a1283e | 151 | |
16421f6e DG |
152 | /* Release exclusive sub-buffer access, move consumer forward. */ |
153 | int kernctl_put_next_subbuf(int fd) | |
154 | { | |
155 | return ioctl(fd, RING_BUFFER_PUT_NEXT_SUBBUF); | |
156 | } | |
157 | ||
964ccb60 | 158 | /* snapshot */ |
16421f6e DG |
159 | |
160 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
161 | int kernctl_snapshot(int fd) | |
162 | { | |
163 | return ioctl(fd, RING_BUFFER_SNAPSHOT); | |
164 | } | |
165 | ||
166 | /* Get the consumer position (iteration start) */ | |
167 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
168 | { | |
169 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos); | |
170 | } | |
171 | ||
172 | /* Get the producer position (iteration end) */ | |
173 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
174 | { | |
175 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos); | |
176 | } | |
177 | ||
964ccb60 MD |
178 | /* Get exclusive read access to the specified sub-buffer position */ |
179 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
f3ed775e | 180 | { |
964ccb60 | 181 | return ioctl(fd, RING_BUFFER_GET_SUBBUF, len); |
f3ed775e | 182 | } |
d0254c7c | 183 | |
964ccb60 MD |
184 | /* Release exclusive sub-buffer access */ |
185 | int kernctl_put_subbuf(int fd) | |
d0254c7c | 186 | { |
964ccb60 | 187 | return ioctl(fd, RING_BUFFER_PUT_SUBBUF); |
d0254c7c | 188 | } |