+/* 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 <stdio.h>
#include <fcntl.h>
-#include <sys/types.h>
-#include <signal.h>
-#include <errno.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-
-#define UNIX_PATH_MAX 108
-#define SOCK_DIR "/tmp/socks"
-#define UST_SIGNAL SIGIO
-
-struct ust_msg {
- char *raw;
+#include <regex.h>
+
+#include "ustcomm.h"
+#include "ustcmd.h"
+
+enum command {
+ START_TRACE,
+ STOP_TRACE,
+ START,
+ DESTROY,
+ LIST_MARKERS,
+ ENABLE_MARKER,
+ DISABLE_MARKER,
+ GET_ONLINE_PIDS,
+ UNKNOWN
};
-void parse_opts(int argc, char **argv)
+struct ust_opts {
+ enum command cmd;
+ pid_t *pids;
+ char* regex;
+ regex_t preg;
+ int regex_state;
+};
+
+char *progname = NULL;
+
+void usage(void)
{
- int flags, opt;
- int nsecs, tfnd;
-
- nsecs = 0;
- tfnd = 0;
- flags = 0;
- while ((opt = getopt(argc, argv, "nt:")) != -1) {
- switch (opt) {
- case 'n':
- flags = 1;
- break;
- case 't':
- nsecs = atoi(optarg);
- tfnd = 1;
- break;
- default: /* '?' */
- fprintf(stderr, "Usage: %s [-t nsecs] [-n] name\n",
- argv[0]);
- exit(EXIT_FAILURE);
- }
- }
+ 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\
+\
+");
+}
- printf("flags=%d; tfnd=%d; optind=%d\n", flags, tfnd, optind);
+int parse_opts_long(int argc, char **argv, struct ust_opts *opts)
+{
+ int c;
- if (optind >= argc) {
- fprintf(stderr, "Expected argument after options\n");
- exit(EXIT_FAILURE);
+ opts->pids = NULL;
+ opts->regex = NULL;
+ opts->regex_state = -1;
+
+ 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;
+ }
}
- printf("name argument = %s\n", argv[optind]);
+ if (argc - optind > 0 && opts->cmd != GET_ONLINE_PIDS) {
+ int i;
+ int pididx=0;
+ opts->pids = malloc((argc-optind+1) * sizeof(pid_t));
- /* Other code omitted */
+ for(i=optind; i<argc; i++) {
+ opts->pids[pididx++] = atoi(argv[i]);
+ }
+ opts->pids[pididx] = -1;
+ }
- exit(EXIT_SUCCESS);
+ if (opts->cmd == ENABLE_MARKER || opts->cmd == DISABLE_MARKER) {
+ if (opts->regex_state = regcomp(&opts->preg, opts->regex, 0)) {
+ fprintf(stderr, "Invalid regular expression.\n");
+ }
+ }
+ return 0;
}
-void signal_process(pid_t pid)
-{
- int result;
+static void regex_change_m_state(struct ust_opts* opts, pid_t pid) {
+ struct USTcmd_cmsf* cmsf = NULL;
+ unsigned int i = 0;
+ int e = (opts->cmd == ENABLE_MARKER);
- result = kill(pid, UST_SIGNAL);
- if(result == -1) {
- perror("kill");
+ if (opts->regex_state != 0) {
return;
}
- sleep(1);
+ if (ustcmd_get_cmsf(&cmsf, pid)) {
+ fprintf(stderr, "error while trying to get markers for PID "
+ "%u\n", (unsigned int) pid);
+ return;
+ }
+ while (cmsf[i].channel != NULL) {
+ char* mc;
+ asprintf(&mc, "%s/%s", cmsf[i].channel, cmsf[i].marker);
+ if (regexec(&opts->preg, mc, 0, NULL, 0) == 0) {
+ /* We got a match! */
+ if (ustcmd_set_marker_state(mc,
+ e ? USTCMD_MS_ON : USTCMD_MS_OFF, pid)) {
+ fprintf(stderr,
+ "error while trying to %sable marker"
+ "\"%s\" for PID %u\n",
+ e ? "en" : "dis", mc,
+ (unsigned int) pid);
+ } else {
+ printf("sucessfully %sabled marker "
+ "\"%s\" for PID %u\n",
+ e ? "en" : "dis", mc,
+ (unsigned int) pid);
+ }
+ }
+ free(mc);
+ ++i;
+ }
+ ustcmd_free_cmsf(cmsf);
}
-int send_message(pid_t pid, const char *msg)
+int main(int argc, char *argv[])
{
- int fd;
+ pid_t *pidit;
+ struct ustcomm_connection conn;
int result;
- struct sockaddr_un addr;
+ struct ust_opts opts;
- result = fd = socket(PF_UNIX, SOCK_DGRAM, 0);
- if(result == -1) {
- perror("socket");
- return 1;
- }
+ progname = argv[0];
- addr.sun_family = AF_UNIX;
+ if(argc <= 1) {
+ fprintf(stderr, "No operation specified.\n");
+ usage();
+ exit(EXIT_FAILURE);
+ }
- result = snprintf(addr.sun_path, UNIX_PATH_MAX, "%s/%d", SOCK_DIR, pid);
- if(result >= UNIX_PATH_MAX) {
- fprintf(stderr, "string overflow allocating socket name");
- return 1;
+ result = parse_opts_long(argc, argv, &opts);
+ if(result) {
+ usage();
+ exit(EXIT_FAILURE);
}
- char buf[] = "print_markers\n";
+ 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;
- signal_process(pid);
+ if (pp) {
+ while (pp[i] != 0) {
+ printf("%u\n", (unsigned int) pp[i]);
+ ++i;
+ }
+ free(pp);
+ }
- result = sendto(fd, buf, sizeof(buf), 0, (struct sockaddr *)&addr, sizeof(addr));
- if(result == -1) {
- perror("sendto");
- return 1;
+ exit(EXIT_SUCCESS);
}
-// result = fd = open(sockfile, O_RDWR);
-// if(result == -1 && errno == ENXIO) {
-// fprintf(stderr, "signalling process\n");
-//
-// result = fd = open(sockfile, O_RDWR);
-// if(result == -1) {
-// perror("open");
-// return 1;
-// }
-// }
-// else if(result == -1) {
-// perror("open");
-// return 1;
-// }
+ pidit = opts.pids;
+ struct USTcmd_cmsf* cmsf = NULL;
-}
+ while(*pidit != -1) {
+ switch (opts.cmd) {
+ case START_TRACE:
+ if (ustcmd_start_trace(*pidit)) {
+ fprintf(stderr,
+ "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;
-int main(int argc, char *argv[])
-{
- pid_t pid = atoi(argv[1]);
+ case STOP_TRACE:
+ if (ustcmd_stop_trace(*pidit)) {
+ fprintf(stderr,
+ "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;
- char *msg = argv[2];
+ case START:
+ if (ustcmd_setup_and_start(*pidit)) {
+ fprintf(stderr,
+ "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;
- send_message(pid, msg);
+ case DESTROY:
+ if (ustcmd_destroy_trace(*pidit)) {
+ fprintf(stderr,
+ "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, fs: %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:
+ case DISABLE_MARKER:
+ regex_change_m_state(&opts, *pidit);
+ break;
+
+ default:
+ fprintf(stderr, "error: unknown command...\n");
+ break;
+ }
+
+ pidit++;
+ }
+
+ exit_free:
+ if (opts.pids != NULL) {
+ free(opts.pids);
+ }
+ if (opts.regex != NULL) {
+ free(opts.regex);
+ }
return 0;
}
+
projects / ust.git / blobdiff