Commit | Line | Data |
---|---|---|
b1acd2b3 JD |
1 | /* |
2 | * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca> | |
3 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
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; only version 2 | |
8 | * of the License. | |
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 | */ | |
19 | ||
20 | #include <sys/ioctl.h> | |
21 | ||
22 | #include "kernel-ctl.h" | |
23 | #include "kernel-ioctl.h" | |
24 | ||
25 | int kernctl_create_session(int fd) | |
26 | { | |
27 | return ioctl(fd, LTTNG_KERNEL_SESSION); | |
28 | } | |
29 | ||
30 | /* open the metadata global channel */ | |
31 | int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops) | |
32 | { | |
33 | return ioctl(fd, LTTNG_KERNEL_METADATA, chops); | |
34 | } | |
35 | ||
36 | int kernctl_create_channel(int fd, struct lttng_channel_attr *chops) | |
37 | { | |
38 | return ioctl(fd, LTTNG_KERNEL_CHANNEL, chops); | |
39 | } | |
40 | ||
41 | int kernctl_create_stream(int fd) | |
42 | { | |
43 | return ioctl(fd, LTTNG_KERNEL_STREAM); | |
44 | } | |
45 | ||
46 | int kernctl_create_event(int fd, struct lttng_kernel_event *ev) | |
47 | { | |
48 | return ioctl(fd, LTTNG_KERNEL_EVENT, ev); | |
49 | } | |
50 | ||
51 | int kernctl_add_context(int fd, struct lttng_kernel_context *ctx) | |
52 | { | |
53 | return ioctl(fd, LTTNG_KERNEL_CONTEXT, ctx); | |
54 | } | |
55 | ||
56 | ||
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 | ||
69 | int kernctl_start_session(int fd) | |
70 | { | |
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); | |
77 | } | |
78 | ||
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 | ||
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 | ||
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 | ||
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 | ||
134 | /* returns the size of the current sub-buffer, without padding (for mmap). */ | |
135 | int kernctl_get_subbuf_size(int fd, unsigned long *len) | |
136 | { | |
137 | return ioctl(fd, RING_BUFFER_GET_SUBBUF_SIZE, len); | |
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 | ||
146 | /* Get exclusive read access to the next sub-buffer that can be read. */ | |
147 | int kernctl_get_next_subbuf(int fd) | |
148 | { | |
149 | return ioctl(fd, RING_BUFFER_GET_NEXT_SUBBUF); | |
150 | } | |
151 | ||
152 | ||
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 | ||
159 | /* snapshot */ | |
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 | ||
179 | /* Get exclusive read access to the specified sub-buffer position */ | |
180 | int kernctl_get_subbuf(int fd, unsigned long *len) | |
181 | { | |
182 | return ioctl(fd, RING_BUFFER_GET_SUBBUF, len); | |
183 | } | |
184 | ||
185 | /* Release exclusive sub-buffer access */ | |
186 | int kernctl_put_subbuf(int fd) | |
187 | { | |
188 | return ioctl(fd, RING_BUFFER_PUT_SUBBUF); | |
189 | } |