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 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 | |
82a3637f DG |
7 | * as published by the Free Software Foundation; only version 2 |
8 | * of the License. | |
ee0326c0 DG |
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 | ||
1e307fab DG |
22 | #include <lttng-kernel-ctl.h> |
23 | ||
16421f6e | 24 | #include "kernel-ioctl.h" |
16421f6e | 25 | |
964ccb60 | 26 | int kernctl_create_session(int fd) |
d65106b1 | 27 | { |
964ccb60 | 28 | return ioctl(fd, LTTNG_KERNEL_SESSION); |
d65106b1 DG |
29 | } |
30 | ||
964ccb60 MD |
31 | /* open the metadata global channel */ |
32 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) | |
f3ed775e | 33 | { |
964ccb60 | 34 | return ioctl(fd, LTTNG_KERNEL_METADATA, chops); |
f3ed775e DG |
35 | } |
36 | ||
37 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
16421f6e | 38 | { |
9cb98350 | 39 | return ioctl(fd, LTTNG_KERNEL_CHANNEL, chops); |
16421f6e DG |
40 | } |
41 | ||
964ccb60 | 42 | int kernctl_create_stream(int fd) |
16421f6e | 43 | { |
964ccb60 | 44 | return ioctl(fd, LTTNG_KERNEL_STREAM); |
16421f6e DG |
45 | } |
46 | ||
964ccb60 | 47 | int kernctl_create_event(int fd, struct lttng_kernel_event *ev) |
16421f6e | 48 | { |
964ccb60 | 49 | return ioctl(fd, LTTNG_KERNEL_EVENT, ev); |
16421f6e DG |
50 | } |
51 | ||
964ccb60 | 52 | int kernctl_add_context(int fd, struct lttng_kernel_context *ctx) |
16421f6e | 53 | { |
964ccb60 | 54 | return ioctl(fd, LTTNG_KERNEL_CONTEXT, ctx); |
16421f6e DG |
55 | } |
56 | ||
964ccb60 | 57 | |
f3ed775e DG |
58 | /* Enable event, channel and session ioctl */ |
59 | int kernctl_enable(int fd) | |
60 | { | |
61 | return ioctl(fd, LTTNG_KERNEL_ENABLE); | |
62 | } | |
63 | ||
64 | /* Disable event, channel and session ioctl */ | |
65 | int kernctl_disable(int fd) | |
66 | { | |
67 | return ioctl(fd, LTTNG_KERNEL_DISABLE); | |
68 | } | |
69 | ||
964ccb60 | 70 | int kernctl_start_session(int fd) |
16421f6e | 71 | { |
964ccb60 MD |
72 | return ioctl(fd, LTTNG_KERNEL_SESSION_START); |
73 | } | |
74 | ||
75 | int kernctl_stop_session(int fd) | |
76 | { | |
77 | return ioctl(fd, LTTNG_KERNEL_SESSION_STOP); | |
16421f6e DG |
78 | } |
79 | ||
964ccb60 MD |
80 | |
81 | int kernctl_tracepoint_list(int fd) | |
82 | { | |
83 | return ioctl(fd, LTTNG_KERNEL_TRACEPOINT_LIST); | |
84 | } | |
85 | ||
86 | int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v) | |
87 | { | |
88 | return ioctl(fd, LTTNG_KERNEL_TRACER_VERSION, v); | |
89 | } | |
90 | ||
91 | int kernctl_wait_quiescent(int fd) | |
92 | { | |
93 | return ioctl(fd, LTTNG_KERNEL_WAIT_QUIESCENT); | |
94 | } | |
95 | ||
96 | int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate) | |
97 | { | |
98 | return ioctl(fd, LTTNG_KERNEL_CALIBRATE, calibrate); | |
99 | } | |
100 | ||
101 | ||
102 | int kernctl_buffer_flush(int fd) | |
103 | { | |
104 | return ioctl(fd, RING_BUFFER_FLUSH); | |
105 | } | |
106 | ||
107 | ||
108 | /* Buffer operations */ | |
109 | ||
110 | /* For mmap mode, readable without "get" operation */ | |
111 | ||
16421f6e DG |
112 | /* returns the length to mmap. */ |
113 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
114 | { | |
115 | return ioctl(fd, RING_BUFFER_GET_MMAP_LEN, len); | |
116 | } | |
117 | ||
964ccb60 MD |
118 | /* returns the maximum size for sub-buffers. */ |
119 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
120 | { | |
121 | return ioctl(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len); | |
122 | } | |
123 | ||
124 | /* | |
125 | * For mmap mode, operate on the current packet (between get/put or | |
126 | * get_next/put_next). | |
127 | */ | |
128 | ||
16421f6e DG |
129 | /* returns the offset of the subbuffer belonging to the mmap reader. */ |
130 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
131 | { | |
132 | return ioctl(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off); | |
133 | } | |
134 | ||
964ccb60 MD |
135 | /* returns the size of the current sub-buffer, without padding (for mmap). */ |
136 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
16421f6e | 137 | { |
964ccb60 | 138 | return ioctl(fd, RING_BUFFER_GET_SUBBUF_SIZE, len); |
16421f6e DG |
139 | } |
140 | ||
141 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
142 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
143 | { | |
144 | return ioctl(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len); | |
145 | } | |
146 | ||
964ccb60 MD |
147 | /* Get exclusive read access to the next sub-buffer that can be read. */ |
148 | int kernctl_get_next_subbuf(int fd) | |
16421f6e | 149 | { |
964ccb60 | 150 | return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF); |
16421f6e DG |
151 | } |
152 | ||
d4a1283e | 153 | |
16421f6e DG |
154 | /* Release exclusive sub-buffer access, move consumer forward. */ |
155 | int kernctl_put_next_subbuf(int fd) | |
156 | { | |
157 | return ioctl(fd, RING_BUFFER_PUT_NEXT_SUBBUF); | |
158 | } | |
159 | ||
964ccb60 | 160 | /* snapshot */ |
16421f6e DG |
161 | |
162 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
163 | int kernctl_snapshot(int fd) | |
164 | { | |
165 | return ioctl(fd, RING_BUFFER_SNAPSHOT); | |
166 | } | |
167 | ||
168 | /* Get the consumer position (iteration start) */ | |
169 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
170 | { | |
171 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos); | |
172 | } | |
173 | ||
174 | /* Get the producer position (iteration end) */ | |
175 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
176 | { | |
177 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos); | |
178 | } | |
179 | ||
964ccb60 MD |
180 | /* Get exclusive read access to the specified sub-buffer position */ |
181 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
f3ed775e | 182 | { |
964ccb60 | 183 | return ioctl(fd, RING_BUFFER_GET_SUBBUF, len); |
f3ed775e | 184 | } |
d0254c7c | 185 | |
964ccb60 MD |
186 | /* Release exclusive sub-buffer access */ |
187 | int kernctl_put_subbuf(int fd) | |
d0254c7c | 188 | { |
964ccb60 | 189 | return ioctl(fd, RING_BUFFER_PUT_SUBBUF); |
d0254c7c | 190 | } |