2 * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; only version 2
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.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 #include <sys/types.h>
32 static char *opt_event_list
;
33 static char *opt_kernel
;
34 static char *opt_cmd_name
;
35 static char *opt_channel_name
;
36 static char *opt_session_name
;
37 static int opt_pid_all
;
38 static int opt_userspace
;
39 static int opt_disable_all
;
47 static struct lttng_handle
*handle
;
49 static struct poptOption long_options
[] = {
50 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
51 {"help", 'h', POPT_ARG_NONE
, 0, OPT_HELP
, 0, 0},
52 {"session", 's', POPT_ARG_STRING
, &opt_session_name
, 0, 0, 0},
53 {"all-events", 'a', POPT_ARG_VAL
, &opt_disable_all
, 1, 0, 0},
54 {"channel", 'c', POPT_ARG_STRING
, &opt_channel_name
, 0, 0, 0},
55 {"kernel", 'k', POPT_ARG_VAL
, &opt_kernel
, 1, 0, 0},
56 {"userspace", 'u', POPT_ARG_STRING
| POPT_ARGFLAG_OPTIONAL
, 0, OPT_USERSPACE
, 0, 0},
57 {"all", 0, POPT_ARG_VAL
, &opt_pid_all
, 1, 0, 0},
58 {"pid", 'p', POPT_ARG_INT
, &opt_pid
, 0, 0, 0},
65 static void usage(FILE *ofp
)
67 fprintf(ofp
, "usage: lttng disable-event NAME[,NAME2,...] [options]\n");
69 fprintf(ofp
, " -h, --help Show this help\n");
70 fprintf(ofp
, " -s, --session Apply on session name\n");
71 fprintf(ofp
, " -c, --channel Apply on this channel\n");
72 fprintf(ofp
, " -a, --all-events Enable all tracepoints\n");
73 fprintf(ofp
, " -k, --kernel Apply for the kernel tracer\n");
74 fprintf(ofp
, " -u, --userspace [CMD] Apply for the user-space tracer\n");
75 fprintf(ofp
, " --all If -u, apply on all traceable apps\n");
76 fprintf(ofp
, " -p, --pid PID If -u, apply on a specific PID\n");
83 * Disabling event using the lttng API.
85 static int disable_events(char *session_name
)
87 int err
, ret
= CMD_SUCCESS
;
88 char *event_name
, *channel_name
= NULL
;
89 struct lttng_domain dom
;
91 if (opt_channel_name
== NULL
) {
92 err
= asprintf(&channel_name
, DEFAULT_CHANNEL_NAME
);
98 channel_name
= opt_channel_name
;
102 dom
.type
= LTTNG_DOMAIN_KERNEL
;
105 handle
= lttng_create_handle(session_name
, &dom
);
106 if (handle
== NULL
) {
111 if (opt_disable_all
) {
113 ret
= lttng_disable_event(handle
, NULL
, channel_name
);
117 /* TODO: User-space tracer */
120 /* Strip event list */
121 event_name
= strtok(opt_event_list
, ",");
122 while (event_name
!= NULL
) {
123 /* Kernel tracer action */
125 DBG("Disabling kernel event %s for channel %s",
126 event_name
, channel_name
);
128 ret
= lttng_disable_event(handle
, event_name
, channel_name
);
130 MSG("Unable to disable event %s for channel %s",
131 event_name
, channel_name
);
133 MSG("Kernel event %s disabled for channel %s",
134 event_name
, channel_name
);
136 } else if (opt_userspace
) { /* User-space tracer action */
138 * TODO: Waiting on lttng UST 2.0
141 } else if (opt_pid
!= 0) {
143 ret
= CMD_NOT_IMPLEMENTED
;
146 ERR("Please specify a tracer (--kernel or --userspace)");
151 event_name
= strtok(NULL
, ",");
155 if (opt_channel_name
== NULL
) {
158 lttng_destroy_handle(handle
);
166 * Disable event to trace session
168 int cmd_disable_events(int argc
, const char **argv
)
171 static poptContext pc
;
172 char *session_name
= NULL
;
174 pc
= poptGetContext(NULL
, argc
, argv
, long_options
, 0);
175 poptReadDefaultConfig(pc
, 0);
177 while ((opt
= poptGetNextOpt(pc
)) != -1) {
185 opt_cmd_name
= poptGetOptArg(pc
);
194 opt_event_list
= (char*) poptGetArg(pc
);
195 if (opt_event_list
== NULL
&& opt_disable_all
== 0) {
196 ERR("Missing event name(s).\n");
202 if (!opt_session_name
) {
203 session_name
= get_session_name();
204 if (session_name
== NULL
) {
209 session_name
= opt_session_name
;
212 ret
= disable_events(session_name
);
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