X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=lttng%2Fcommands%2Fdisable_events.c;h=1891cd2e34729cc45b94ec3c2f4da12f8f9391dc;hp=3cd130e571ff8d66996ee59c943259b9b72d6ab6;hb=9730260e7e733b421e1af26a9953f938de2628cc;hpb=b73d0b29491b7d0dc5cde3c4c65a6cd7c80479b4 diff --git a/lttng/commands/disable_events.c b/lttng/commands/disable_events.c index 3cd130e57..1891cd2e3 100644 --- a/lttng/commands/disable_events.c +++ b/lttng/commands/disable_events.c @@ -3,8 +3,8 @@ * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. + * as published by the Free Software Foundation; only version 2 + * of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -25,17 +25,17 @@ #include #include -#include "cmd.h" -#include "conf.h" -#include "utils.h" +#include "../cmd.h" +#include "../conf.h" +#include "../utils.h" static char *opt_event_list; -static char *opt_kernel; -static char *opt_cmd_name; +static int opt_kernel; static char *opt_channel_name; static char *opt_session_name; static int opt_pid_all; static int opt_userspace; +static char *opt_cmd_name; static int opt_disable_all; static pid_t opt_pid; @@ -44,6 +44,8 @@ enum { OPT_USERSPACE, }; +static struct lttng_handle *handle; + static struct poptOption long_options[] = { /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, @@ -51,7 +53,7 @@ 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}, - {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, 0, OPT_USERSPACE, 0, 0}, + {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0}, {"all", 0, POPT_ARG_VAL, &opt_pid_all, 1, 0, 0}, {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0} @@ -67,7 +69,7 @@ static void usage(FILE *ofp) fprintf(ofp, " -h, --help Show this help\n"); fprintf(ofp, " -s, --session Apply on session name\n"); fprintf(ofp, " -c, --channel Apply on this channel\n"); - fprintf(ofp, " -a, --all-events Enable all tracepoints\n"); + fprintf(ofp, " -a, --all-events Disable all tracepoints\n"); fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n"); fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space tracer\n"); fprintf(ofp, " --all If -u, apply on all traceable apps\n"); @@ -80,16 +82,11 @@ static void usage(FILE *ofp) * * Disabling event using the lttng API. */ -static int disable_events(void) +static int disable_events(char *session_name) { int err, ret = CMD_SUCCESS; char *event_name, *channel_name = NULL; - struct lttng_event ev; - - if (set_session_name(opt_session_name) < 0) { - ret = CMD_ERROR; - goto error; - } + struct lttng_domain dom; if (opt_channel_name == NULL) { err = asprintf(&channel_name, DEFAULT_CHANNEL_NAME); @@ -101,13 +98,39 @@ static int disable_events(void) channel_name = opt_channel_name; } + 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) { + 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); + } else { + ERR("Please specify a tracer (--kernel or --userspace)"); + ret = CMD_NOT_IMPLEMENTED; + goto error; + } + + handle = lttng_create_handle(session_name, &dom); + if (handle == NULL) { + ret = -1; + goto error; + } + if (opt_disable_all) { - if (opt_kernel) { - ret = lttng_kernel_disable_event(NULL, channel_name); + ret = lttng_disable_event(handle, NULL, channel_name); + if (ret < 0) { goto error; } - /* TODO: User-space tracer */ + MSG("All %s events are disabled in channel %s", + opt_kernel ? "kernel" : "UST", channel_name); + goto end; } /* Strip event list */ @@ -115,41 +138,43 @@ static int disable_events(void) while (event_name != NULL) { /* Kernel tracer action */ if (opt_kernel) { - DBG("Disabling kernel event %s for channel %s", + DBG("Disabling kernel event %s in channel %s", event_name, channel_name); - - /* Copy name and type of the event */ - strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN); - ret = lttng_kernel_disable_event(event_name, channel_name); - if (ret < 0) { - MSG("Unable to disable event %s for channel %s", - event_name, channel_name); - } else { - MSG("Kernel event %s disabled for channel %s", - event_name, channel_name); - } } else if (opt_userspace) { /* User-space tracer action */ - /* - * TODO: Waiting on lttng UST 2.0 - */ - if (opt_pid_all) { - } else if (opt_pid != 0) { + if (!opt_pid_all) { + MSG("Only supporting tracing all UST processes (-u --all) for now."); + ret = CMD_NOT_IMPLEMENTED; + goto error; } - ret = CMD_NOT_IMPLEMENTED; - goto error; + DBG("Disabling UST event %s in channel %s", + event_name, channel_name); } else { - ERR("Please specify a tracer (kernel or user-space)"); + ERR("Please specify a tracer (--kernel or --userspace)"); goto error; } + ret = lttng_disable_event(handle, event_name, channel_name); + if (ret < 0) { + MSG("Unable to disable %s event %s in channel %s", + opt_kernel ? "kernel" : "UST", event_name, + channel_name); + } else { + MSG("%s event %s disabled in channel %s", + opt_kernel ? "kernel" : "UST", event_name, + channel_name); + } + /* Next event */ event_name = strtok(NULL, ","); } +end: error: if (opt_channel_name == NULL) { free(channel_name); } + lttng_destroy_handle(handle); + return ret; } @@ -162,6 +187,7 @@ int cmd_disable_events(int argc, const char **argv) { int opt, ret; static poptContext pc; + char *session_name = NULL; pc = poptGetContext(NULL, argc, argv, long_options, 0); poptReadDefaultConfig(pc, 0); @@ -174,7 +200,6 @@ int cmd_disable_events(int argc, const char **argv) goto end; case OPT_USERSPACE: opt_userspace = 1; - opt_cmd_name = poptGetOptArg(pc); break; default: usage(stderr); @@ -191,7 +216,17 @@ int cmd_disable_events(int argc, const char **argv) goto end; } - ret = disable_events(); + if (!opt_session_name) { + session_name = get_session_name(); + if (session_name == NULL) { + ret = -1; + goto end; + } + } else { + session_name = opt_session_name; + } + + ret = disable_events(session_name); end: return ret;