Commit | Line | Data |
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d65106b1 DG |
1 | /* |
2 | * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca> | |
3 | * | |
d14d33bf AM |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License, version 2 only, | |
6 | * as published by the Free Software Foundation. | |
d65106b1 DG |
7 | * |
8 | * This program 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 | |
11 | * GNU General Public License for more details. | |
12 | * | |
d14d33bf AM |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., | |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
d65106b1 DG |
16 | */ |
17 | ||
18 | #define _GNU_SOURCE | |
90b9a268 | 19 | #include <ctype.h> |
d65106b1 DG |
20 | #include <popt.h> |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <sys/stat.h> | |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
27 | ||
3301e740 DG |
28 | #include <urcu/list.h> |
29 | ||
c399183f | 30 | #include "../command.h" |
d65106b1 | 31 | |
b13d56d7 MD |
32 | #define PRINT_LINE_LEN 80 |
33 | ||
d65106b1 DG |
34 | static char *opt_event_name; |
35 | static char *opt_channel_name; | |
5440dc42 | 36 | static char *opt_session_name; |
55cc08a6 | 37 | static int opt_kernel; |
d65106b1 | 38 | static int opt_userspace; |
d78d6610 DG |
39 | static char *opt_type; |
40 | #if 0 | |
41 | /* Not implemented yet */ | |
eeac7d46 | 42 | static char *opt_cmd_name; |
d65106b1 | 43 | static pid_t opt_pid; |
d78d6610 | 44 | #endif |
d65106b1 DG |
45 | |
46 | enum { | |
47 | OPT_HELP = 1, | |
48 | OPT_TYPE, | |
eeac7d46 | 49 | OPT_USERSPACE, |
679b4943 | 50 | OPT_LIST_OPTIONS, |
d65106b1 DG |
51 | }; |
52 | ||
cd80958d DG |
53 | static struct lttng_handle *handle; |
54 | ||
90b9a268 DG |
55 | /* |
56 | * Taken from the LTTng ABI | |
57 | */ | |
58 | enum context_type { | |
59 | CONTEXT_PID = 0, | |
60 | CONTEXT_PERF_COUNTER = 1, | |
95da1297 | 61 | CONTEXT_PROCNAME = 2, |
90b9a268 DG |
62 | CONTEXT_PRIO = 3, |
63 | CONTEXT_NICE = 4, | |
64 | CONTEXT_VPID = 5, | |
65 | CONTEXT_TID = 6, | |
66 | CONTEXT_VTID = 7, | |
67 | CONTEXT_PPID = 8, | |
68 | CONTEXT_VPPID = 9, | |
9197c5c4 | 69 | CONTEXT_PTHREAD_ID = 10, |
3301e740 DG |
70 | }; |
71 | ||
90b9a268 DG |
72 | /* |
73 | * Taken from the Perf ABI (all enum perf_*) | |
74 | */ | |
75 | enum perf_type { | |
76 | PERF_TYPE_HARDWARE = 0, | |
77 | PERF_TYPE_SOFTWARE = 1, | |
b13d56d7 | 78 | PERF_TYPE_HW_CACHE = 3, |
3301e740 DG |
79 | }; |
80 | ||
90b9a268 | 81 | enum perf_count_hard { |
b13d56d7 MD |
82 | PERF_COUNT_HW_CPU_CYCLES = 0, |
83 | PERF_COUNT_HW_INSTRUCTIONS = 1, | |
84 | PERF_COUNT_HW_CACHE_REFERENCES = 2, | |
85 | PERF_COUNT_HW_CACHE_MISSES = 3, | |
86 | PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, | |
87 | PERF_COUNT_HW_BRANCH_MISSES = 5, | |
88 | PERF_COUNT_HW_BUS_CYCLES = 6, | |
89 | PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7, | |
90 | PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8, | |
90b9a268 DG |
91 | }; |
92 | ||
93 | enum perf_count_soft { | |
94 | PERF_COUNT_SW_CPU_CLOCK = 0, | |
95 | PERF_COUNT_SW_TASK_CLOCK = 1, | |
96 | PERF_COUNT_SW_PAGE_FAULTS = 2, | |
97 | PERF_COUNT_SW_CONTEXT_SWITCHES = 3, | |
98 | PERF_COUNT_SW_CPU_MIGRATIONS = 4, | |
99 | PERF_COUNT_SW_PAGE_FAULTS_MIN = 5, | |
100 | PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6, | |
101 | PERF_COUNT_SW_ALIGNMENT_FAULTS = 7, | |
102 | PERF_COUNT_SW_EMULATION_FAULTS = 8, | |
3301e740 DG |
103 | }; |
104 | ||
b13d56d7 MD |
105 | /* |
106 | * Generalized hardware cache events: | |
107 | * | |
108 | * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x | |
109 | * { read, write, prefetch } x | |
110 | * { accesses, misses } | |
111 | */ | |
112 | enum perf_hw_cache_id { | |
113 | PERF_COUNT_HW_CACHE_L1D = 0, | |
114 | PERF_COUNT_HW_CACHE_L1I = 1, | |
115 | PERF_COUNT_HW_CACHE_LL = 2, | |
116 | PERF_COUNT_HW_CACHE_DTLB = 3, | |
117 | PERF_COUNT_HW_CACHE_ITLB = 4, | |
118 | PERF_COUNT_HW_CACHE_BPU = 5, | |
119 | ||
120 | PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ | |
121 | }; | |
122 | ||
123 | enum perf_hw_cache_op_id { | |
124 | PERF_COUNT_HW_CACHE_OP_READ = 0, | |
125 | PERF_COUNT_HW_CACHE_OP_WRITE = 1, | |
126 | PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, | |
127 | ||
128 | PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ | |
129 | }; | |
130 | ||
131 | enum perf_hw_cache_op_result_id { | |
132 | PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, | |
133 | PERF_COUNT_HW_CACHE_RESULT_MISS = 1, | |
134 | ||
135 | PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ | |
136 | }; | |
137 | ||
d65106b1 DG |
138 | static struct poptOption long_options[] = { |
139 | /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ | |
140 | {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, | |
5440dc42 | 141 | {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0}, |
d65106b1 DG |
142 | {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0}, |
143 | {"event", 'e', POPT_ARG_STRING, &opt_event_name, 0, 0, 0}, | |
144 | {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0}, | |
d78d6610 | 145 | {"userspace", 'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0}, |
6caa2bcc | 146 | {"type", 't', POPT_ARG_STRING, &opt_type, OPT_TYPE, 0, 0}, |
679b4943 | 147 | {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, |
d65106b1 DG |
148 | {0, 0, 0, 0, 0, 0, 0} |
149 | }; | |
150 | ||
90b9a268 | 151 | /* |
b13d56d7 | 152 | * Context options |
90b9a268 | 153 | */ |
b13d56d7 MD |
154 | #define PERF_HW(opt, name) \ |
155 | { \ | |
156 | "perf:" #opt, CONTEXT_PERF_COUNTER, \ | |
157 | .u.perf = { PERF_TYPE_HARDWARE, PERF_COUNT_HW_##name, },\ | |
158 | } | |
90b9a268 | 159 | |
b13d56d7 MD |
160 | #define PERF_SW(opt, name) \ |
161 | { \ | |
162 | "perf:" #opt, CONTEXT_PERF_COUNTER, \ | |
163 | .u.perf = { PERF_TYPE_SOFTWARE, PERF_COUNT_SW_##name, },\ | |
164 | } | |
90b9a268 | 165 | |
b13d56d7 MD |
166 | #define _PERF_HW_CACHE(optstr, name, op, result) \ |
167 | { \ | |
168 | "perf:" optstr, CONTEXT_PERF_COUNTER, \ | |
169 | .u.perf = { \ | |
170 | PERF_TYPE_HW_CACHE, \ | |
171 | (uint64_t) PERF_COUNT_HW_CACHE_##name \ | |
18829107 MD |
172 | | ((uint64_t) PERF_COUNT_HW_CACHE_OP_##op << 8) \ |
173 | | ((uint64_t) PERF_COUNT_HW_CACHE_RESULT_##result << 16), \ | |
b13d56d7 MD |
174 | }, \ |
175 | } | |
176 | ||
177 | #define PERF_HW_CACHE(opt, name) \ | |
178 | _PERF_HW_CACHE(#opt "-loads", name, READ, ACCESS), \ | |
179 | _PERF_HW_CACHE(#opt "-load-misses", name, READ, MISS), \ | |
180 | _PERF_HW_CACHE(#opt "-stores", name, WRITE, ACCESS), \ | |
181 | _PERF_HW_CACHE(#opt "-store-misses", name, WRITE, MISS), \ | |
182 | _PERF_HW_CACHE(#opt "-prefetches", name, PREFETCH, ACCESS), \ | |
183 | _PERF_HW_CACHE(#opt "-prefetch-misses", name, PREFETCH, MISS) \ | |
184 | ||
185 | static | |
186 | const struct ctx_opts { | |
90b9a268 | 187 | char *symbol; |
b13d56d7 MD |
188 | enum context_type ctx_type; |
189 | union { | |
190 | struct { | |
191 | uint32_t type; | |
192 | uint64_t config; | |
193 | } perf; | |
194 | } u; | |
195 | } ctx_opts[] = { | |
196 | { "pid", CONTEXT_PID }, | |
95da1297 | 197 | { "procname", CONTEXT_PROCNAME }, |
b13d56d7 MD |
198 | { "prio", CONTEXT_PRIO }, |
199 | { "nice", CONTEXT_NICE }, | |
200 | { "vpid", CONTEXT_VPID }, | |
201 | { "tid", CONTEXT_TID }, | |
9197c5c4 | 202 | { "pthread_id", CONTEXT_PTHREAD_ID }, |
b13d56d7 MD |
203 | { "vtid", CONTEXT_VTID }, |
204 | { "ppid", CONTEXT_PPID }, | |
205 | { "vppid", CONTEXT_VPPID }, | |
206 | /* Perf options */ | |
207 | PERF_HW(cpu-cycles, CPU_CYCLES), | |
208 | PERF_HW(cycles, CPU_CYCLES), | |
209 | PERF_HW(stalled-cycles-frontend, STALLED_CYCLES_FRONTEND), | |
210 | PERF_HW(idle-cycles-frontend, STALLED_CYCLES_FRONTEND), | |
211 | PERF_HW(stalled-cycles-backend, STALLED_CYCLES_BACKEND), | |
212 | PERF_HW(idle-cycles-backend, STALLED_CYCLES_BACKEND), | |
213 | PERF_HW(instructions, INSTRUCTIONS), | |
214 | PERF_HW(cache-references, CACHE_REFERENCES), | |
215 | PERF_HW(cache-misses, CACHE_MISSES), | |
216 | PERF_HW(branch-instructions, BRANCH_INSTRUCTIONS), | |
217 | PERF_HW(branches, BRANCH_INSTRUCTIONS), | |
218 | PERF_HW(branch-misses, BRANCH_MISSES), | |
219 | PERF_HW(bus-cycles, BUS_CYCLES), | |
220 | ||
221 | PERF_HW_CACHE(L1-dcache, L1D), | |
222 | PERF_HW_CACHE(L1-icache, L1I), | |
223 | PERF_HW_CACHE(LLC, LL), | |
224 | PERF_HW_CACHE(dTLB, DTLB), | |
225 | _PERF_HW_CACHE("iTLB-loads", ITLB, READ, ACCESS), | |
226 | _PERF_HW_CACHE("iTLB-load-misses", ITLB, READ, MISS), | |
227 | _PERF_HW_CACHE("branch-loads", BPU, READ, ACCESS), | |
228 | _PERF_HW_CACHE("branch-load-misses", BPU, READ, MISS), | |
229 | ||
230 | ||
231 | PERF_SW(cpu-clock, CPU_CLOCK), | |
232 | PERF_SW(task-clock, TASK_CLOCK), | |
233 | PERF_SW(page-fault, PAGE_FAULTS), | |
234 | PERF_SW(faults, PAGE_FAULTS), | |
235 | PERF_SW(major-faults, PAGE_FAULTS_MAJ), | |
236 | PERF_SW(minor-faults, PAGE_FAULTS_MIN), | |
237 | PERF_SW(context-switches, CONTEXT_SWITCHES), | |
238 | PERF_SW(cs, CONTEXT_SWITCHES), | |
239 | PERF_SW(cpu-migrations, CPU_MIGRATIONS), | |
240 | PERF_SW(migrations, CPU_MIGRATIONS), | |
241 | PERF_SW(alignment-faults, ALIGNMENT_FAULTS), | |
242 | PERF_SW(emulation-faults, EMULATION_FAULTS), | |
243 | { NULL, -1 }, /* Closure */ | |
90b9a268 DG |
244 | }; |
245 | ||
b13d56d7 MD |
246 | #undef PERF_SW |
247 | #undef PERF_HW | |
248 | ||
90b9a268 | 249 | /* |
b13d56d7 | 250 | * Context type for command line option parsing. |
90b9a268 | 251 | */ |
b13d56d7 MD |
252 | struct ctx_type { |
253 | const struct ctx_opts *opt; | |
254 | struct cds_list_head list; | |
90b9a268 DG |
255 | }; |
256 | ||
257 | /* | |
258 | * List of context type. Use to enable multiple context on a single command | |
259 | * line entry. | |
260 | */ | |
261 | struct ctx_type_list { | |
262 | struct cds_list_head head; | |
263 | } ctx_type_list = { | |
264 | .head = CDS_LIST_HEAD_INIT(ctx_type_list.head), | |
265 | }; | |
266 | ||
90b9a268 DG |
267 | /* |
268 | * Pretty print context type. | |
269 | */ | |
270 | static void print_ctx_type(FILE *ofp) | |
271 | { | |
b13d56d7 MD |
272 | const char *indent = " "; |
273 | int indent_len = strlen(indent); | |
274 | int len, i = 0; | |
90b9a268 | 275 | |
76e3c5dd | 276 | fprintf(ofp, "%s", indent); |
b13d56d7 | 277 | len = indent_len; |
90b9a268 | 278 | while (ctx_opts[i].symbol != NULL) { |
b13d56d7 MD |
279 | if (len > indent_len) { |
280 | if (len + strlen(ctx_opts[i].symbol) + 2 | |
281 | >= PRINT_LINE_LEN) { | |
282 | fprintf(ofp, ",\n"); | |
76e3c5dd | 283 | fprintf(ofp, "%s", indent); |
b13d56d7 MD |
284 | len = indent_len; |
285 | } else { | |
286 | len += fprintf(ofp, ", "); | |
90b9a268 DG |
287 | } |
288 | } | |
b13d56d7 | 289 | len += fprintf(ofp, "%s", ctx_opts[i].symbol); |
90b9a268 DG |
290 | i++; |
291 | } | |
90b9a268 DG |
292 | } |
293 | ||
d65106b1 DG |
294 | /* |
295 | * usage | |
296 | */ | |
297 | static void usage(FILE *ofp) | |
298 | { | |
32a6298d | 299 | fprintf(ofp, "usage: lttng add-context -t TYPE [-k|-u] [OPTIONS]\n"); |
d65106b1 | 300 | fprintf(ofp, "\n"); |
b13d56d7 | 301 | fprintf(ofp, "If no channel and no event is given (-c/-e), the context\n"); |
32a6298d DG |
302 | fprintf(ofp, "is added to all events and all channels.\n"); |
303 | fprintf(ofp, "\n"); | |
304 | fprintf(ofp, "Otherwise the context is added only to the channel (-c)\n"); | |
af87c45a | 305 | fprintf(ofp, "and/or event (-e) indicated.\n"); |
32a6298d DG |
306 | fprintf(ofp, "\n"); |
307 | fprintf(ofp, "Exactly one domain (-k or -u) must be specified.\n"); | |
3301e740 | 308 | fprintf(ofp, "\n"); |
d65106b1 DG |
309 | fprintf(ofp, "Options:\n"); |
310 | fprintf(ofp, " -h, --help Show this help\n"); | |
679b4943 | 311 | fprintf(ofp, " --list-options Simple listing of options\n"); |
5eb00805 TD |
312 | fprintf(ofp, " -s, --session NAME Apply to session name\n"); |
313 | fprintf(ofp, " -c, --channel NAME Apply to channel\n"); | |
314 | fprintf(ofp, " -e, --event NAME Apply to event\n"); | |
af87c45a | 315 | fprintf(ofp, " -k, --kernel Apply to the kernel tracer\n"); |
af87c45a | 316 | fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n"); |
32a6298d DG |
317 | fprintf(ofp, "\n"); |
318 | fprintf(ofp, "Context:\n"); | |
b13d56d7 | 319 | fprintf(ofp, " -t, --type TYPE Context type. You can repeat that option on\n"); |
af87c45a DG |
320 | fprintf(ofp, " the command line to specify multiple contexts at once.\n"); |
321 | fprintf(ofp, " (--kernel preempts --userspace)\n"); | |
b13d56d7 | 322 | fprintf(ofp, " TYPE can be one of the strings below:\n"); |
90b9a268 | 323 | print_ctx_type(ofp); |
d65106b1 | 324 | fprintf(ofp, "\n"); |
90b9a268 | 325 | fprintf(ofp, "Example:\n"); |
b13d56d7 | 326 | fprintf(ofp, "This command will add the context information 'prio' and two perf\n" |
af87c45a | 327 | "counters (hardware branch misses and cache misses), to all events\n" |
b13d56d7 MD |
328 | "in the trace data output:\n"); |
329 | fprintf(ofp, "# lttng add-context -k -t prio -t perf:branch-misses -t perf:cache-misses\n"); | |
d65106b1 DG |
330 | fprintf(ofp, "\n"); |
331 | } | |
332 | ||
90b9a268 DG |
333 | /* |
334 | * Find context numerical value from string. | |
335 | */ | |
336 | static int find_ctx_type_idx(const char *opt) | |
337 | { | |
338 | int ret = -1, i = 0; | |
339 | ||
340 | while (ctx_opts[i].symbol != NULL) { | |
341 | if (strcmp(opt, ctx_opts[i].symbol) == 0) { | |
342 | ret = i; | |
343 | goto end; | |
344 | } | |
345 | i++; | |
346 | } | |
347 | ||
348 | end: | |
349 | return ret; | |
350 | } | |
351 | ||
90b9a268 DG |
352 | /* |
353 | * Add context to channel or event. | |
d65106b1 | 354 | */ |
cd80958d | 355 | static int add_context(char *session_name) |
d65106b1 | 356 | { |
d16c1a4c | 357 | int ret = CMD_SUCCESS, warn = 0; |
7d29a247 DG |
358 | struct lttng_event_context context; |
359 | struct lttng_domain dom; | |
3301e740 | 360 | struct ctx_type *type; |
b13d56d7 | 361 | char *ptr; |
d65106b1 | 362 | |
441c16a7 MD |
363 | memset(&context, 0, sizeof(context)); |
364 | memset(&dom, 0, sizeof(dom)); | |
365 | ||
cd80958d DG |
366 | if (opt_kernel) { |
367 | dom.type = LTTNG_DOMAIN_KERNEL; | |
d78d6610 | 368 | } else if (opt_userspace) { |
55cc08a6 | 369 | dom.type = LTTNG_DOMAIN_UST; |
55cc08a6 | 370 | } else { |
e14f64a8 | 371 | ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); |
d16c1a4c | 372 | ret = CMD_ERROR; |
55cc08a6 | 373 | goto error; |
cd80958d DG |
374 | } |
375 | ||
376 | handle = lttng_create_handle(session_name, &dom); | |
377 | if (handle == NULL) { | |
af87c45a | 378 | ret = CMD_ERROR; |
cd80958d DG |
379 | goto error; |
380 | } | |
381 | ||
5eb00805 | 382 | /* Iterate over all the context types given */ |
3301e740 | 383 | cds_list_for_each_entry(type, &ctx_type_list.head, list) { |
6775595e | 384 | context.ctx = (enum lttng_event_context_type) type->opt->ctx_type; |
b13d56d7 MD |
385 | if (context.ctx == LTTNG_EVENT_CONTEXT_PERF_COUNTER) { |
386 | context.u.perf_counter.type = type->opt->u.perf.type; | |
387 | context.u.perf_counter.config = type->opt->u.perf.config; | |
d7b91b3c | 388 | strcpy(context.u.perf_counter.name, type->opt->symbol); |
b13d56d7 MD |
389 | /* Replace : and - by _ */ |
390 | while ((ptr = strchr(context.u.perf_counter.name, '-')) != NULL) { | |
391 | *ptr = '_'; | |
3301e740 | 392 | } |
b13d56d7 MD |
393 | while ((ptr = strchr(context.u.perf_counter.name, ':')) != NULL) { |
394 | *ptr = '_'; | |
3301e740 | 395 | } |
3301e740 | 396 | } |
55cc08a6 DG |
397 | DBG("Adding context..."); |
398 | ||
399 | ret = lttng_add_context(handle, &context, opt_event_name, | |
400 | opt_channel_name); | |
401 | if (ret < 0) { | |
b58471ff | 402 | ERR("%s: %s", type->opt->symbol, lttng_strerror(ret)); |
d16c1a4c | 403 | warn = 1; |
55cc08a6 | 404 | continue; |
d65106b1 | 405 | } else { |
b58471ff DG |
406 | if (opt_channel_name && opt_event_name) { |
407 | MSG("%s context %s added to event %s channel %s", | |
408 | opt_kernel ? "kernel" : "UST", type->opt->symbol, | |
409 | opt_channel_name, opt_event_name); | |
410 | } else if (opt_channel_name && !opt_event_name) { | |
411 | MSG("%s context %s added to channel %s", | |
412 | opt_kernel ? "kernel" : "UST", type->opt->symbol, | |
413 | opt_channel_name); | |
414 | } else if (!opt_channel_name && opt_event_name) { | |
415 | MSG("%s context %s added to event %s", | |
416 | opt_kernel ? "kernel" : "UST", type->opt->symbol, | |
417 | opt_event_name); | |
418 | } else { | |
419 | MSG("%s context %s added to all channels", | |
420 | opt_kernel ? "kernel" : "UST", type->opt->symbol) | |
421 | } | |
d65106b1 | 422 | } |
d65106b1 DG |
423 | } |
424 | ||
af87c45a DG |
425 | ret = CMD_SUCCESS; |
426 | ||
d65106b1 | 427 | error: |
cd80958d DG |
428 | lttng_destroy_handle(handle); |
429 | ||
d16c1a4c DG |
430 | /* |
431 | * This means that at least one add_context failed and tells the user to | |
432 | * look on stderr for error(s). | |
433 | */ | |
434 | if (warn) { | |
435 | ret = CMD_WARNING; | |
436 | } | |
d65106b1 DG |
437 | return ret; |
438 | } | |
439 | ||
440 | /* | |
5eb00805 | 441 | * Add context to channel or event. |
d65106b1 DG |
442 | */ |
443 | int cmd_add_context(int argc, const char **argv) | |
444 | { | |
90b9a268 | 445 | int index, opt, ret = CMD_SUCCESS; |
d65106b1 | 446 | static poptContext pc; |
b13d56d7 | 447 | struct ctx_type *type, *tmptype; |
cd80958d | 448 | char *session_name = NULL; |
d65106b1 | 449 | |
636167b6 DG |
450 | if (argc < 2) { |
451 | usage(stderr); | |
5eb00805 | 452 | ret = CMD_ERROR; |
636167b6 DG |
453 | goto end; |
454 | } | |
455 | ||
d65106b1 DG |
456 | pc = poptGetContext(NULL, argc, argv, long_options, 0); |
457 | poptReadDefaultConfig(pc, 0); | |
458 | ||
459 | while ((opt = poptGetNextOpt(pc)) != -1) { | |
460 | switch (opt) { | |
461 | case OPT_HELP: | |
5eb00805 | 462 | usage(stdout); |
d65106b1 DG |
463 | goto end; |
464 | case OPT_TYPE: | |
af87c45a DG |
465 | /* |
466 | * Look up the index of opt_type in ctx_opts[] first, so we don't | |
467 | * have to free(type) on failure. | |
468 | */ | |
6caa2bcc | 469 | index = find_ctx_type_idx(opt_type); |
b13d56d7 | 470 | if (index < 0) { |
6caa2bcc | 471 | ERR("Unknown context type %s", opt_type); |
5eb00805 | 472 | ret = CMD_ERROR; |
b13d56d7 | 473 | goto end; |
90b9a268 | 474 | } |
5eb00805 TD |
475 | |
476 | type = malloc(sizeof(struct ctx_type)); | |
477 | if (type == NULL) { | |
478 | perror("malloc ctx_type"); | |
479 | ret = CMD_FATAL; | |
480 | goto end; | |
481 | } | |
482 | ||
b13d56d7 MD |
483 | type->opt = &ctx_opts[index]; |
484 | if (type->opt->ctx_type == -1) { | |
6caa2bcc | 485 | ERR("Unknown context type %s", opt_type); |
5eb00805 TD |
486 | free(type); |
487 | ret = CMD_ERROR; | |
488 | goto end; | |
90b9a268 DG |
489 | } else { |
490 | cds_list_add(&type->list, &ctx_type_list.head); | |
491 | } | |
d65106b1 | 492 | break; |
eeac7d46 MD |
493 | case OPT_USERSPACE: |
494 | opt_userspace = 1; | |
d78d6610 | 495 | #if 0 |
eeac7d46 | 496 | opt_cmd_name = poptGetOptArg(pc); |
d78d6610 | 497 | #endif |
eeac7d46 | 498 | break; |
679b4943 SM |
499 | case OPT_LIST_OPTIONS: |
500 | list_cmd_options(stdout, long_options); | |
679b4943 | 501 | goto end; |
d65106b1 DG |
502 | default: |
503 | usage(stderr); | |
504 | ret = CMD_UNDEFINED; | |
505 | goto end; | |
506 | } | |
507 | } | |
508 | ||
ae856491 DG |
509 | if (!opt_type) { |
510 | ERR("Missing mandatory -t TYPE"); | |
511 | usage(stderr); | |
512 | ret = CMD_ERROR; | |
513 | goto end; | |
514 | } | |
515 | ||
cd80958d DG |
516 | if (!opt_session_name) { |
517 | session_name = get_session_name(); | |
518 | if (session_name == NULL) { | |
5eb00805 | 519 | ret = CMD_ERROR; |
cd80958d DG |
520 | goto end; |
521 | } | |
522 | } else { | |
523 | session_name = opt_session_name; | |
524 | } | |
525 | ||
526 | ret = add_context(session_name); | |
3301e740 | 527 | |
1256f150 DT |
528 | if (!opt_session_name) { |
529 | free(session_name); | |
530 | } | |
531 | ||
5eb00805 | 532 | end: |
3301e740 | 533 | /* Cleanup allocated memory */ |
b13d56d7 | 534 | cds_list_for_each_entry_safe(type, tmptype, &ctx_type_list.head, list) { |
3301e740 DG |
535 | free(type); |
536 | } | |
537 | ||
ca1c3607 | 538 | poptFreeContext(pc); |
d65106b1 DG |
539 | return ret; |
540 | } |