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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 | ||
22 | #include "kernel-ioctl.h" | |
23 | #include "libkernelctl.h" | |
16421f6e | 24 | |
d65106b1 DG |
25 | int kernctl_add_context(int fd, struct lttng_kernel_context *ctx) |
26 | { | |
27 | return ioctl(fd, LTTNG_KERNEL_CONTEXT, ctx); | |
28 | } | |
29 | ||
f3ed775e DG |
30 | int kernctl_buffer_flush(int fd) |
31 | { | |
32 | return ioctl(fd, RING_BUFFER_FLUSH); | |
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 | ||
9cb98350 | 40 | int kernctl_create_event(int fd, struct lttng_kernel_event *ev) |
16421f6e | 41 | { |
9cb98350 | 42 | return ioctl(fd, LTTNG_KERNEL_EVENT, ev); |
16421f6e DG |
43 | } |
44 | ||
45 | int kernctl_create_session(int fd) | |
46 | { | |
9cb98350 | 47 | return ioctl(fd, LTTNG_KERNEL_SESSION); |
16421f6e DG |
48 | } |
49 | ||
50 | int kernctl_create_stream(int fd) | |
51 | { | |
9cb98350 | 52 | return ioctl(fd, LTTNG_KERNEL_STREAM); |
16421f6e DG |
53 | } |
54 | ||
f3ed775e DG |
55 | /* Enable event, channel and session ioctl */ |
56 | int kernctl_enable(int fd) | |
57 | { | |
58 | return ioctl(fd, LTTNG_KERNEL_ENABLE); | |
59 | } | |
60 | ||
61 | /* Disable event, channel and session ioctl */ | |
62 | int kernctl_disable(int fd) | |
63 | { | |
64 | return ioctl(fd, LTTNG_KERNEL_DISABLE); | |
65 | } | |
66 | ||
16421f6e DG |
67 | /* returns the maximum size for sub-buffers. */ |
68 | int kernctl_get_max_subbuf_size(int fd, unsigned long *len) | |
69 | { | |
70 | return ioctl(fd, RING_BUFFER_GET_MAX_SUBBUF_SIZE, len); | |
71 | } | |
72 | ||
73 | /* returns the length to mmap. */ | |
74 | int kernctl_get_mmap_len(int fd, unsigned long *len) | |
75 | { | |
76 | return ioctl(fd, RING_BUFFER_GET_MMAP_LEN, len); | |
77 | } | |
78 | ||
79 | /* returns the offset of the subbuffer belonging to the mmap reader. */ | |
80 | int kernctl_get_mmap_read_offset(int fd, unsigned long *off) | |
81 | { | |
82 | return ioctl(fd, RING_BUFFER_GET_MMAP_READ_OFFSET, off); | |
83 | } | |
84 | ||
85 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
86 | int kernctl_get_next_subbuf(int fd) | |
87 | { | |
88 | return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF); | |
89 | } | |
90 | ||
91 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
92 | int kernctl_get_padded_subbuf_size(int fd, unsigned long *len) | |
93 | { | |
94 | return ioctl(fd, RING_BUFFER_GET_PADDED_SUBBUF_SIZE, len); | |
95 | } | |
96 | ||
97 | /* Get exclusive read access to the specified sub-buffer position */ | |
98 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
99 | { | |
100 | return ioctl(fd, RING_BUFFER_GET_SUBBUF, len); | |
101 | } | |
102 | ||
103 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
104 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
105 | { | |
106 | return ioctl(fd, RING_BUFFER_GET_SUBBUF_SIZE, len); | |
107 | } | |
108 | ||
d4a1283e | 109 | /* open the metadata global channel */ |
f3ed775e | 110 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) |
d4a1283e | 111 | { |
9cb98350 | 112 | return ioctl(fd, LTTNG_KERNEL_METADATA, chops); |
d4a1283e JD |
113 | } |
114 | ||
16421f6e DG |
115 | /* Release exclusive sub-buffer access, move consumer forward. */ |
116 | int kernctl_put_next_subbuf(int fd) | |
117 | { | |
118 | return ioctl(fd, RING_BUFFER_PUT_NEXT_SUBBUF); | |
119 | } | |
120 | ||
121 | /* Release exclusive sub-buffer access */ | |
122 | int kernctl_put_subbuf(int fd) | |
123 | { | |
124 | return ioctl(fd, RING_BUFFER_PUT_SUBBUF); | |
125 | } | |
126 | ||
127 | /* Get a snapshot of the current ring buffer producer and consumer positions */ | |
128 | int kernctl_snapshot(int fd) | |
129 | { | |
130 | return ioctl(fd, RING_BUFFER_SNAPSHOT); | |
131 | } | |
132 | ||
133 | /* Get the consumer position (iteration start) */ | |
134 | int kernctl_snapshot_get_consumed(int fd, unsigned long *pos) | |
135 | { | |
136 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_CONSUMED, pos); | |
137 | } | |
138 | ||
139 | /* Get the producer position (iteration end) */ | |
140 | int kernctl_snapshot_get_produced(int fd, unsigned long *pos) | |
141 | { | |
142 | return ioctl(fd, RING_BUFFER_SNAPSHOT_GET_PRODUCED, pos); | |
143 | } | |
144 | ||
145 | int kernctl_start_session(int fd) | |
146 | { | |
9cb98350 | 147 | return ioctl(fd, LTTNG_KERNEL_SESSION_START); |
16421f6e DG |
148 | } |
149 | ||
150 | int kernctl_stop_session(int fd) | |
151 | { | |
9cb98350 | 152 | return ioctl(fd, LTTNG_KERNEL_SESSION_STOP); |
16421f6e DG |
153 | } |
154 | ||
8d609afd JD |
155 | int kernctl_tracepoint_list(int fd) |
156 | { | |
157 | return ioctl(fd, LTTNG_KERNEL_TRACEPOINT_LIST); | |
158 | } | |
159 | ||
160 | int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v) | |
161 | { | |
162 | return ioctl(fd, LTTNG_KERNEL_TRACER_VERSION, v); | |
163 | } | |
f3ed775e DG |
164 | |
165 | int kernctl_wait_quiescent(int fd) | |
166 | { | |
167 | return ioctl(fd, LTTNG_KERNEL_WAIT_QUIESCENT); | |
168 | } |