-/* Copyright (C) 2009 Pierre-Marc Fournier
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#define _GNU_SOURCE
-#include <stdio.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <stdlib.h>
-#include <fcntl.h>
-
-#include "ustcomm.h"
-#include "ustcmd.h"
-#include "usterr.h"
-
-enum command {
- START_TRACE,
- STOP_TRACE,
- START,
- DESTROY,
- LIST_MARKERS,
- ENABLE_MARKER,
- DISABLE_MARKER,
- GET_ONLINE_PIDS,
- UNKNOWN
-};
-
-struct ust_opts {
- enum command cmd;
- pid_t *pids;
- char *regex;
-};
-
-char *progname = NULL;
-
-void usage(void)
-{
- fprintf(stderr, "usage: %s COMMAND PIDs...\n", progname);
- fprintf(stderr, "\nControl the tracing of a process that supports LTTng Userspace Tracing.\n\
-\n\
-Commands:\n\
- --start-trace\t\t\tStart tracing\n\
- --stop-trace\t\t\tStop tracing\n\
- --destroy-trace\t\t\tDestroy the trace\n\
- --enable-marker \"CHANNEL/MARKER\"\tEnable a marker\n\
- --disable-marker \"CHANNEL/MARKER\"\tDisable a marker\n\
- --list-markers\t\t\tList the markers of the process, their\n\t\t\t\t\t state and format string\n\
-\
-");
-}
-
-int parse_opts_long(int argc, char **argv, struct ust_opts *opts)
-{
- int c;
-
- opts->pids = NULL;
- opts->regex = NULL;
-
- while (1) {
- int option_index = 0;
- static struct option long_options[] = {
- {"start-trace", 0, 0, 1000},
- {"stop-trace", 0, 0, 1001},
- {"destroy-trace", 0, 0, 1002},
- {"list-markers", 0, 0, 1004},
- {"print-markers", 0, 0, 1005},
- {"pid", 1, 0, 1006},
- {"enable-marker", 1, 0, 1007},
- {"disable-marker", 1, 0, 1008},
- {"start", 0, 0, 1009},
- {"help", 0, 0, 'h'},
- {"version", 0, 0, 1010},
- {"online-pids", 0, 0, 1011},
- {0, 0, 0, 0}
- };
-
- c = getopt_long(argc, argv, "h", long_options, &option_index);
- if (c == -1)
- break;
-
- switch (c) {
- case 0:
- printf("option %s", long_options[option_index].name);
- if (optarg)
- printf(" with arg %s", optarg);
- printf("\n");
- break;
-
- case 1000:
- opts->cmd = START_TRACE;
- break;
- case 1001:
- opts->cmd = STOP_TRACE;
- break;
- case 1009:
- opts->cmd = START;
- break;
- case 1002:
- opts->cmd = DESTROY;
- break;
- case 1004:
- opts->cmd = LIST_MARKERS;
- break;
- case 1007:
- opts->cmd = ENABLE_MARKER;
- opts->regex = strdup(optarg);
- break;
- case 1008:
- opts->cmd = DISABLE_MARKER;
- opts->regex = strdup(optarg);
- break;
- case 1011:
- opts->cmd = GET_ONLINE_PIDS;
- break;
- case 'h':
- usage();
- exit(0);
- case 1010:
- printf("Version 0.1\n");
-
- default:
- /* unknown option or other error; error is
- printed by getopt, just return */
- opts->cmd = UNKNOWN;
- return 1;
- }
- }
-
- if (argc - optind > 0 && opts->cmd != GET_ONLINE_PIDS) {
- int i;
- int pididx=0;
- opts->pids = malloc((argc-optind+1) * sizeof(pid_t));
-
- for(i=optind; i<argc; i++) {
- /* don't take any chances, use a long long */
- long long tmp;
- char *endptr;
- tmp = strtoull(argv[i], &endptr, 10);
- if(*endptr != '\0') {
- ERR("The pid \"%s\" is invalid.", argv[i]);
- return 1;
- }
- opts->pids[pididx++] = (pid_t) tmp;
- }
- opts->pids[pididx] = -1;
- }
-
- return 0;
-}
-
-int main(int argc, char *argv[])
-{
- pid_t *pidit;
- int result;
- struct ust_opts opts;
-
- progname = argv[0];
-
- if(argc <= 1) {
- fprintf(stderr, "No operation specified.\n");
- usage();
- exit(EXIT_FAILURE);
- }
-
- result = parse_opts_long(argc, argv, &opts);
- if(result) {
- fprintf(stderr, "\n");
- usage();
- exit(EXIT_FAILURE);
- }
-
- if(opts.pids == NULL && opts.cmd != GET_ONLINE_PIDS) {
- fprintf(stderr, "No pid specified.\n");
- usage();
- exit(EXIT_FAILURE);
- }
- if(opts.cmd == UNKNOWN) {
- fprintf(stderr, "No command specified.\n");
- usage();
- exit(EXIT_FAILURE);
- }
- if (opts.cmd == GET_ONLINE_PIDS) {
- pid_t *pp = ustcmd_get_online_pids();
- unsigned int i = 0;
-
- if (pp) {
- while (pp[i] != 0) {
- printf("%u\n", (unsigned int) pp[i]);
- ++i;
- }
- free(pp);
- }
-
- exit(EXIT_SUCCESS);
- }
-
- pidit = opts.pids;
- struct marker_status *cmsf = NULL;
-
- while(*pidit != -1) {
- switch (opts.cmd) {
- case START_TRACE:
- result = ustcmd_start_trace(*pidit);
- if (result) {
- ERR("error while trying to for trace with PID %u\n", (unsigned int) *pidit);
- break;
- }
- //printf("sucessfully started trace for PID %u\n", (unsigned int) *pidit);
- break;
-
- case STOP_TRACE:
- result = ustcmd_stop_trace(*pidit);
- if (result) {
- ERR("error while trying to stop trace for PID %u\n", (unsigned int) *pidit);
- break;
- }
- //printf("sucessfully stopped trace for PID %u\n", (unsigned int) *pidit);
- break;
-
- case START:
- result = ustcmd_setup_and_start(*pidit);
- if (result) {
- ERR("error while trying to setup/start trace for PID %u\n", (unsigned int) *pidit);
- break;
- }
- //printf("sucessfully setup/started trace for PID %u\n", (unsigned int) *pidit);
- break;
-
- case DESTROY:
- result = ustcmd_destroy_trace(*pidit);
- if (result) {
- ERR("error while trying to destroy trace with PID %u\n", (unsigned int) *pidit);
- break;
- }
- //printf("sucessfully destroyed trace for PID %u\n", (unsigned int) *pidit);
- break;
-
- case LIST_MARKERS:
- cmsf = NULL;
- if (ustcmd_get_cmsf(&cmsf, *pidit)) {
- fprintf(stderr,
- "error while trying to list markers for"
- " PID %u\n", (unsigned int) *pidit);
- break;
- }
- unsigned int i = 0;
- while (cmsf[i].channel != NULL) {
- printf("{PID: %u, channel/marker: %s/%s, "
- "state: %u, fmt: %s}\n",
- (unsigned int) *pidit,
- cmsf[i].channel,
- cmsf[i].marker,
- cmsf[i].state,
- cmsf[i].fs);
- ++i;
- }
- ustcmd_free_cmsf(cmsf);
- break;
-
- case ENABLE_MARKER:
- if(opts.regex)
- ustcmd_set_marker_state(opts.regex, 1, *pidit);
- break;
- case DISABLE_MARKER:
- if(opts.regex)
- ustcmd_set_marker_state(opts.regex, 0, *pidit);
- break;
-
- default:
- ERR("unknown command\n");
- break;
- }
-
- pidit++;
- }
-
- if (opts.pids != NULL) {
- free(opts.pids);
- }
- if (opts.regex != NULL) {
- free(opts.regex);
- }
-
- return 0;
-}
-