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c39c72ee PMF |
1 | /* Copyright (C) 2009 Pierre-Marc Fournier |
2 | * | |
3 | * This library is free software; you can redistribute it and/or | |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public | |
14 | * License along with this library; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
16 | */ | |
17 | ||
872037bb PMF |
18 | #define _GNU_SOURCE |
19 | #include <stdio.h> | |
fbd8191b PMF |
20 | #include <unistd.h> |
21 | #include <getopt.h> | |
22 | #include <stdlib.h> | |
fbd8191b | 23 | #include <fcntl.h> |
fbd8191b | 24 | |
f9e5ce61 | 25 | #include "ustcomm.h" |
ae937656 | 26 | #include "ustcmd.h" |
2028e7fd | 27 | #include "usterr.h" |
ae937656 PP |
28 | |
29 | enum command { | |
30 | START_TRACE, | |
31 | STOP_TRACE, | |
32 | START, | |
33 | DESTROY, | |
34 | LIST_MARKERS, | |
35 | ENABLE_MARKER, | |
36 | DISABLE_MARKER, | |
37 | GET_ONLINE_PIDS, | |
38 | UNKNOWN | |
ef290fca | 39 | }; |
fbd8191b | 40 | |
52c51a47 | 41 | struct ust_opts { |
ae937656 | 42 | enum command cmd; |
52c51a47 | 43 | pid_t *pids; |
08230db7 | 44 | char *regex; |
52c51a47 PMF |
45 | }; |
46 | ||
fd2fb4f9 PMF |
47 | char *progname = NULL; |
48 | ||
49 | void usage(void) | |
50 | { | |
ae937656 | 51 | fprintf(stderr, "usage: %s COMMAND PIDs...\n", progname); |
fd2fb4f9 PMF |
52 | fprintf(stderr, "\nControl the tracing of a process that supports LTTng Userspace Tracing.\n\ |
53 | \n\ | |
54 | Commands:\n\ | |
55 | --start-trace\t\t\tStart tracing\n\ | |
56 | --stop-trace\t\t\tStop tracing\n\ | |
57 | --destroy-trace\t\t\tDestroy the trace\n\ | |
ae937656 PP |
58 | --enable-marker \"CHANNEL/MARKER\"\tEnable a marker\n\ |
59 | --disable-marker \"CHANNEL/MARKER\"\tDisable a marker\n\ | |
60 | --list-markers\t\t\tList the markers of the process, their\n\t\t\t\t\t state and format string\n\ | |
61 | \ | |
fd2fb4f9 PMF |
62 | "); |
63 | } | |
64 | ||
52c51a47 | 65 | int parse_opts_long(int argc, char **argv, struct ust_opts *opts) |
fbd8191b | 66 | { |
52c51a47 | 67 | int c; |
52c51a47 | 68 | |
52c51a47 | 69 | opts->pids = NULL; |
ef290fca | 70 | opts->regex = NULL; |
52c51a47 PMF |
71 | |
72 | while (1) { | |
52c51a47 PMF |
73 | int option_index = 0; |
74 | static struct option long_options[] = { | |
75 | {"start-trace", 0, 0, 1000}, | |
76 | {"stop-trace", 0, 0, 1001}, | |
77 | {"destroy-trace", 0, 0, 1002}, | |
78 | {"list-markers", 0, 0, 1004}, | |
79 | {"print-markers", 0, 0, 1005}, | |
80 | {"pid", 1, 0, 1006}, | |
81 | {"enable-marker", 1, 0, 1007}, | |
82 | {"disable-marker", 1, 0, 1008}, | |
83 | {"start", 0, 0, 1009}, | |
d373b5cd PMF |
84 | {"help", 0, 0, 'h'}, |
85 | {"version", 0, 0, 1010}, | |
ae937656 | 86 | {"online-pids", 0, 0, 1011}, |
52c51a47 PMF |
87 | {0, 0, 0, 0} |
88 | }; | |
89 | ||
d373b5cd | 90 | c = getopt_long(argc, argv, "h", long_options, &option_index); |
52c51a47 PMF |
91 | if (c == -1) |
92 | break; | |
93 | ||
94 | switch (c) { | |
95 | case 0: | |
96 | printf("option %s", long_options[option_index].name); | |
97 | if (optarg) | |
98 | printf(" with arg %s", optarg); | |
99 | printf("\n"); | |
100 | break; | |
101 | ||
102 | case 1000: | |
ae937656 | 103 | opts->cmd = START_TRACE; |
52c51a47 PMF |
104 | break; |
105 | case 1001: | |
ae937656 | 106 | opts->cmd = STOP_TRACE; |
52c51a47 PMF |
107 | break; |
108 | case 1009: | |
ae937656 | 109 | opts->cmd = START; |
52c51a47 PMF |
110 | break; |
111 | case 1002: | |
ae937656 | 112 | opts->cmd = DESTROY; |
52c51a47 PMF |
113 | break; |
114 | case 1004: | |
ae937656 | 115 | opts->cmd = LIST_MARKERS; |
52c51a47 PMF |
116 | break; |
117 | case 1007: | |
ae937656 | 118 | opts->cmd = ENABLE_MARKER; |
ef290fca | 119 | opts->regex = strdup(optarg); |
52c51a47 PMF |
120 | break; |
121 | case 1008: | |
ae937656 | 122 | opts->cmd = DISABLE_MARKER; |
ef290fca | 123 | opts->regex = strdup(optarg); |
ae937656 PP |
124 | break; |
125 | case 1011: | |
126 | opts->cmd = GET_ONLINE_PIDS; | |
52c51a47 | 127 | break; |
d373b5cd PMF |
128 | case 'h': |
129 | usage(); | |
130 | exit(0); | |
131 | case 1010: | |
ae937656 | 132 | printf("Version 0.1\n"); |
52c51a47 PMF |
133 | |
134 | default: | |
ae937656 PP |
135 | /* unknown option or other error; error is |
136 | printed by getopt, just return */ | |
137 | opts->cmd = UNKNOWN; | |
52c51a47 | 138 | return 1; |
fbd8191b PMF |
139 | } |
140 | } | |
141 | ||
772030fe | 142 | if (argc - optind > 0 && opts->cmd != GET_ONLINE_PIDS) { |
52c51a47 PMF |
143 | int i; |
144 | int pididx=0; | |
145 | opts->pids = malloc((argc-optind+1) * sizeof(pid_t)); | |
fbd8191b | 146 | |
52c51a47 | 147 | for(i=optind; i<argc; i++) { |
08230db7 PMF |
148 | /* don't take any chances, use a long long */ |
149 | long long tmp; | |
150 | char *endptr; | |
151 | tmp = strtoull(argv[i], &endptr, 10); | |
152 | if(*endptr != '\0') { | |
153 | ERR("The pid \"%s\" is invalid.", argv[i]); | |
154 | return 1; | |
155 | } | |
156 | opts->pids[pididx++] = (pid_t) tmp; | |
52c51a47 PMF |
157 | } |
158 | opts->pids[pididx] = -1; | |
fbd8191b PMF |
159 | } |
160 | ||
52c51a47 PMF |
161 | return 0; |
162 | } | |
fbd8191b | 163 | |
fbd8191b PMF |
164 | int main(int argc, char *argv[]) |
165 | { | |
52c51a47 | 166 | pid_t *pidit; |
52c51a47 PMF |
167 | int result; |
168 | struct ust_opts opts; | |
fbd8191b | 169 | |
52c51a47 | 170 | progname = argv[0]; |
fbd8191b | 171 | |
52c51a47 PMF |
172 | if(argc <= 1) { |
173 | fprintf(stderr, "No operation specified.\n"); | |
174 | usage(); | |
175 | exit(EXIT_FAILURE); | |
176 | } | |
177 | ||
178 | result = parse_opts_long(argc, argv, &opts); | |
179 | if(result) { | |
08230db7 | 180 | fprintf(stderr, "\n"); |
52c51a47 PMF |
181 | usage(); |
182 | exit(EXIT_FAILURE); | |
183 | } | |
184 | ||
ae937656 | 185 | if(opts.pids == NULL && opts.cmd != GET_ONLINE_PIDS) { |
52c51a47 PMF |
186 | fprintf(stderr, "No pid specified.\n"); |
187 | usage(); | |
188 | exit(EXIT_FAILURE); | |
189 | } | |
ae937656 | 190 | if(opts.cmd == UNKNOWN) { |
52c51a47 PMF |
191 | fprintf(stderr, "No command specified.\n"); |
192 | usage(); | |
193 | exit(EXIT_FAILURE); | |
194 | } | |
ae937656 | 195 | if (opts.cmd == GET_ONLINE_PIDS) { |
08230db7 | 196 | pid_t *pp = ustcmd_get_online_pids(); |
ae937656 | 197 | unsigned int i = 0; |
52c51a47 | 198 | |
ae937656 PP |
199 | if (pp) { |
200 | while (pp[i] != 0) { | |
201 | printf("%u\n", (unsigned int) pp[i]); | |
202 | ++i; | |
203 | } | |
204 | free(pp); | |
52c51a47 | 205 | } |
ef290fca | 206 | |
ae937656 PP |
207 | exit(EXIT_SUCCESS); |
208 | } | |
52c51a47 | 209 | |
ae937656 | 210 | pidit = opts.pids; |
08230db7 | 211 | struct marker_status *cmsf = NULL; |
ef290fca | 212 | |
ae937656 PP |
213 | while(*pidit != -1) { |
214 | switch (opts.cmd) { | |
215 | case START_TRACE: | |
08230db7 PMF |
216 | result = ustcmd_start_trace(*pidit); |
217 | if (result) { | |
218 | ERR("error while trying to for trace with PID %u\n", (unsigned int) *pidit); | |
219 | break; | |
220 | } | |
221 | //printf("sucessfully started trace for PID %u\n", (unsigned int) *pidit); | |
ae937656 | 222 | break; |
ef290fca | 223 | |
ae937656 | 224 | case STOP_TRACE: |
08230db7 PMF |
225 | result = ustcmd_stop_trace(*pidit); |
226 | if (result) { | |
227 | ERR("error while trying to stop trace for PID %u\n", (unsigned int) *pidit); | |
228 | break; | |
229 | } | |
230 | //printf("sucessfully stopped trace for PID %u\n", (unsigned int) *pidit); | |
ae937656 | 231 | break; |
ef290fca | 232 | |
ae937656 | 233 | case START: |
08230db7 PMF |
234 | result = ustcmd_setup_and_start(*pidit); |
235 | if (result) { | |
236 | ERR("error while trying to setup/start trace for PID %u\n", (unsigned int) *pidit); | |
237 | break; | |
238 | } | |
239 | //printf("sucessfully setup/started trace for PID %u\n", (unsigned int) *pidit); | |
ae937656 | 240 | break; |
ef290fca | 241 | |
ae937656 | 242 | case DESTROY: |
08230db7 PMF |
243 | result = ustcmd_destroy_trace(*pidit); |
244 | if (result) { | |
245 | ERR("error while trying to destroy trace with PID %u\n", (unsigned int) *pidit); | |
246 | break; | |
247 | } | |
248 | //printf("sucessfully destroyed trace for PID %u\n", (unsigned int) *pidit); | |
ae937656 | 249 | break; |
ef290fca | 250 | |
ae937656 | 251 | case LIST_MARKERS: |
08230db7 PMF |
252 | cmsf = NULL; |
253 | if (ustcmd_get_cmsf(&cmsf, *pidit)) { | |
254 | fprintf(stderr, | |
255 | "error while trying to list markers for" | |
256 | " PID %u\n", (unsigned int) *pidit); | |
257 | break; | |
258 | } | |
259 | unsigned int i = 0; | |
260 | while (cmsf[i].channel != NULL) { | |
261 | printf("{PID: %u, channel/marker: %s/%s, " | |
264f6231 | 262 | "state: %u, fmt: %s}\n", |
08230db7 PMF |
263 | (unsigned int) *pidit, |
264 | cmsf[i].channel, | |
265 | cmsf[i].marker, | |
266 | cmsf[i].state, | |
267 | cmsf[i].fs); | |
268 | ++i; | |
269 | } | |
270 | ustcmd_free_cmsf(cmsf); | |
ae937656 | 271 | break; |
ef290fca | 272 | |
ae937656 | 273 | case ENABLE_MARKER: |
ee648b8f PMF |
274 | if(opts.regex) |
275 | ustcmd_set_marker_state(opts.regex, 1, *pidit); | |
276 | break; | |
ae937656 | 277 | case DISABLE_MARKER: |
ee648b8f PMF |
278 | if(opts.regex) |
279 | ustcmd_set_marker_state(opts.regex, 0, *pidit); | |
280 | break; | |
ef290fca | 281 | |
ae937656 | 282 | default: |
08230db7 | 283 | ERR("unknown command\n"); |
ae937656 PP |
284 | break; |
285 | } | |
ef290fca | 286 | |
52c51a47 PMF |
287 | pidit++; |
288 | } | |
82b1a169 | 289 | |
ef290fca PMF |
290 | if (opts.pids != NULL) { |
291 | free(opts.pids); | |
292 | } | |
293 | if (opts.regex != NULL) { | |
294 | free(opts.regex); | |
ae937656 | 295 | } |
fbd8191b PMF |
296 | |
297 | return 0; | |
298 | } | |
ae937656 | 299 |