Add a '--list-options' option to each command.
[lttng-tools.git] / src / bin / lttng / commands / disable_events.c
index 5247110ef3ca67a0c514a6110b0762564f8f8eb3..ff42da0e001c552c6b6f49c3d9a58b3126ecc4c1 100644 (file)
 #include <sys/types.h>
 #include <unistd.h>
 
-#include "../cmd.h"
-#include "../conf.h"
-#include "../utils.h"
+#include "../command.h"
 
 static char *opt_event_list;
 static int opt_kernel;
 static char *opt_channel_name;
 static char *opt_session_name;
 static int opt_userspace;
-static char *opt_cmd_name;
 static int opt_disable_all;
+#if 0
+/* Not implemented yet */
+static char *opt_cmd_name;
 static pid_t opt_pid;
+#endif
 
 enum {
        OPT_HELP = 1,
        OPT_USERSPACE,
+       OPT_LIST_OPTIONS,
 };
 
 static struct lttng_handle *handle;
@@ -52,8 +54,14 @@ static struct poptOption long_options[] = {
        {"all-events",     'a', POPT_ARG_VAL, &opt_disable_all, 1, 0, 0},
        {"channel",        'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
        {"kernel",         'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
+#if 0
+       /* Not implemented yet */
        {"userspace",      'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
        {"pid",            'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
+#else
+       {"userspace",      'u', POPT_ARG_NONE, 0, OPT_USERSPACE, 0, 0},
+#endif
+       {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
        {0, 0, 0, 0, 0, 0, 0}
 };
 
@@ -65,14 +73,19 @@ static void usage(FILE *ofp)
        fprintf(ofp, "usage: lttng disable-event NAME[,NAME2,...] [options]\n");
        fprintf(ofp, "\n");
        fprintf(ofp, "  -h, --help               Show this help\n");
+       fprintf(ofp, "      --list-options       Simple listing of options\n");
        fprintf(ofp, "  -s, --session            Apply on session name\n");
        fprintf(ofp, "  -c, --channel            Apply on this channel\n");
        fprintf(ofp, "  -a, --all-events         Disable all tracepoints\n");
        fprintf(ofp, "  -k, --kernel             Apply for the kernel tracer\n");
+#if 0
        fprintf(ofp, "  -u, --userspace [CMD]    Apply for the user-space tracer\n");
        fprintf(ofp, "                           If no CMD, the domain used is UST global\n");
        fprintf(ofp, "                           or else the domain is UST EXEC_NAME\n");
        fprintf(ofp, "  -p, --pid PID            If -u, apply to specific PID (domain: UST PID)\n");
+#else
+       fprintf(ofp, "  -u, --userspace          Apply for the user-space tracer\n");
+#endif
        fprintf(ofp, "\n");
 }
 
@@ -103,22 +116,14 @@ static int disable_events(char *session_name)
                goto error;
        }
 
+       /* Create lttng domain */
        if (opt_kernel) {
                dom.type = LTTNG_DOMAIN_KERNEL;
-       } else if (opt_pid != 0) {
-               dom.type = LTTNG_DOMAIN_UST_PID;
-               dom.attr.pid = opt_pid;
-               DBG("PID %d set to lttng handle", opt_pid);
-       } else if (opt_userspace && opt_cmd_name == NULL) {
+       } else if (opt_userspace) {
                dom.type = LTTNG_DOMAIN_UST;
-               DBG("UST global domain selected");
-       } else if (opt_userspace && opt_cmd_name != NULL) {
-               dom.type = LTTNG_DOMAIN_UST_EXEC_NAME;
-               strncpy(dom.attr.exec_name, opt_cmd_name, NAME_MAX);
-               dom.attr.exec_name[NAME_MAX - 1] = '\0';
        } else {
                ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
-               ret = CMD_NOT_IMPLEMENTED;
+               ret = CMD_UNDEFINED;
                goto error;
        }
 
@@ -147,11 +152,13 @@ static int disable_events(char *session_name)
                        DBG("Disabling kernel event %s in channel %s",
                                        event_name, channel_name);
                } else if (opt_userspace) {             /* User-space tracer action */
+#if 0
                        if (opt_cmd_name != NULL || opt_pid) {
                                MSG("Only supporting tracing all UST processes (-u) for now.");
-                               ret = CMD_NOT_IMPLEMENTED;
+                               ret = CMD_UNDEFINED;
                                goto error;
                        }
+#endif
                        DBG("Disabling UST event %s in channel %s",
                                        event_name, channel_name);
                } else {
@@ -207,6 +214,10 @@ int cmd_disable_events(int argc, const char **argv)
                case OPT_USERSPACE:
                        opt_userspace = 1;
                        break;
+               case OPT_LIST_OPTIONS:
+                       list_cmd_options(stdout, long_options);
+                       ret = CMD_SUCCESS;
+                       goto end;
                default:
                        usage(stderr);
                        ret = CMD_UNDEFINED;
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