X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng%2Fcommands%2Fenable_events.c;h=5a22c951355703d418c47fb108ad13e33895587e;hp=5beb5a2b29bc352525baad0e5e857aa3a75901e7;hb=f73fabfda365d22e7dd180fb1614e37c446fbd9e;hpb=ae8564917fa3cb3497ec17951d8ac0ee28de9c81 diff --git a/src/bin/lttng/commands/enable_events.c b/src/bin/lttng/commands/enable_events.c index 5beb5a2b2..5a22c9513 100644 --- a/src/bin/lttng/commands/enable_events.c +++ b/src/bin/lttng/commands/enable_events.c @@ -1,19 +1,18 @@ /* * Copyright (C) 2011 - David Goulet * - * 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; only version 2 - * of the License. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2 only, + * as published by the Free Software Foundation. * * This program 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 General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #define _GNU_SOURCE @@ -28,6 +27,7 @@ #include #include "../command.h" +#include static char *opt_event_list; static int opt_event_type; @@ -41,6 +41,7 @@ static char *opt_probe; static char *opt_function; static char *opt_function_entry_symbol; static char *opt_channel_name; +static char *opt_filter; #if 0 /* Not implemented yet */ static char *opt_cmd_name; @@ -58,6 +59,7 @@ enum { OPT_LOGLEVEL, OPT_LOGLEVEL_ONLY, OPT_LIST_OPTIONS, + OPT_FILTER, }; static struct lttng_handle *handle; @@ -69,13 +71,7 @@ static struct poptOption long_options[] = { {"all", 'a', POPT_ARG_VAL, &opt_enable_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 {"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0}, {"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0}, {"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0}, @@ -90,6 +86,7 @@ static struct poptOption long_options[] = { {"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0}, {"loglevel-only", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL_ONLY, 0, 0}, {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL}, + {"filter", 'f', POPT_ARG_STRING, &opt_filter, OPT_FILTER, 0, 0}, {0, 0, 0, 0, 0, 0, 0} }; @@ -98,22 +95,16 @@ static struct poptOption long_options[] = { */ static void usage(FILE *ofp) { - fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [options] [event_options]\n"); + fprintf(ofp, "usage: lttng enable-event NAME[,NAME2,...] [-k|-u] [OPTIONS] \n"); fprintf(ofp, "\n"); + fprintf(ofp, "Options:\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 Enable all tracepoints\n"); + fprintf(ofp, " -s, --session NAME Apply to session name\n"); + fprintf(ofp, " -c, --channel NAME Apply to this channel\n"); + fprintf(ofp, " -a, --all Enable all tracepoints and syscalls\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, " -u, --userspace Apply to the user-space tracer\n"); fprintf(ofp, "\n"); fprintf(ofp, "Event options:\n"); fprintf(ofp, " --tracepoint Tracepoint event (default)\n"); @@ -122,10 +113,6 @@ static void usage(FILE *ofp) fprintf(ofp, " e.g.:\n"); fprintf(ofp, " \"*\"\n"); fprintf(ofp, " \"app_component:na*\"\n"); - fprintf(ofp, " --loglevel name\n"); - fprintf(ofp, " Tracepoint loglevel (range: 0 to loglevel)\n"); - fprintf(ofp, " --loglevel-only name\n"); - fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); fprintf(ofp, " --probe [addr | symbol | symbol+offset]\n"); fprintf(ofp, " Dynamic probe.\n"); fprintf(ofp, " Addr and offset can be octal (0NNN...),\n"); @@ -140,6 +127,56 @@ static void usage(FILE *ofp) #endif fprintf(ofp, " --syscall System call event\n"); fprintf(ofp, "\n"); + fprintf(ofp, " --loglevel name\n"); + fprintf(ofp, " Tracepoint loglevel range from 0 to loglevel\n"); + fprintf(ofp, " --loglevel-only name\n"); + fprintf(ofp, " Tracepoint loglevel (only this loglevel)\n"); + fprintf(ofp, "\n"); + fprintf(ofp, " The loglevel or loglevel-only options should be\n"); + fprintf(ofp, " combined with a tracepoint name or tracepoint\n"); + fprintf(ofp, " wildcard.\n"); + fprintf(ofp, " Available loglevels:\n"); + fprintf(ofp, " (higher value is more verbose)\n"); + fprintf(ofp, " TRACE_EMERG = 0\n"); + fprintf(ofp, " TRACE_ALERT = 1\n"); + fprintf(ofp, " TRACE_CRIT = 2\n"); + fprintf(ofp, " TRACE_ERR = 3\n"); + fprintf(ofp, " TRACE_WARNING = 4\n"); + fprintf(ofp, " TRACE_NOTICE = 5\n"); + fprintf(ofp, " TRACE_INFO = 6\n"); + fprintf(ofp, " TRACE_DEBUG_SYSTEM = 7\n"); + fprintf(ofp, " TRACE_DEBUG_PROGRAM = 8\n"); + fprintf(ofp, " TRACE_DEBUG_PROCESS = 9\n"); + fprintf(ofp, " TRACE_DEBUG_MODULE = 10\n"); + fprintf(ofp, " TRACE_DEBUG_UNIT = 11\n"); + fprintf(ofp, " TRACE_DEBUG_FUNCTION = 12\n"); + fprintf(ofp, " TRACE_DEBUG_LINE = 13\n"); + fprintf(ofp, " TRACE_DEBUG = 14\n"); + fprintf(ofp, " (shortcuts such as \"system\" are allowed)\n"); + fprintf(ofp, " --filter \'expression\'\n"); + fprintf(ofp, " Filter expression on event fields,\n"); + fprintf(ofp, " event recording depends on evaluation.\n"); + fprintf(ofp, " Only specify on first activation of\n"); + fprintf(ofp, " a given event within a session.\n"); + fprintf(ofp, " Filter only allowed when enabling\n"); + fprintf(ofp, " events within a session before tracing\n"); + fprintf(ofp, " is started. If the filter fails to link\n"); + fprintf(ofp, " with the event within the traced domain,\n"); + fprintf(ofp, " the event will be discarded. Currently,\n"); + fprintf(ofp, " filter is only implemented for the user-space\n"); + fprintf(ofp, " tracer.\n"); + fprintf(ofp, " Expression examples:.\n"); + fprintf(ofp, " \n"); + fprintf(ofp, " 'intfield > 500 && intfield < 503'\n"); + fprintf(ofp, " '(stringfield == \"test\" || intfield != 10) && intfield > 33'\n"); + fprintf(ofp, " 'doublefield > 1.1 && intfield < 5.3'\n"); + fprintf(ofp, " \n"); + fprintf(ofp, " Wildcards are allowed at the end of strings:\n"); + fprintf(ofp, " 'seqfield1 == \"te*\"'\n"); + fprintf(ofp, " In string literals, the escape character is '\\'.\n"); + fprintf(ofp, " Use '\\*' for the '*' character, and '\\\\' for\n"); + fprintf(ofp, " the '\\' character.\n"); + fprintf(ofp, "\n"); } /* @@ -209,6 +246,55 @@ end: return ret; } +/* + * Maps loglevel from string to value + */ +static +int loglevel_str_to_value(const char *inputstr) +{ + int i = 0; + char str[LTTNG_SYMBOL_NAME_LEN]; + + while (inputstr[i] != '\0' && i < LTTNG_SYMBOL_NAME_LEN) { + str[i] = toupper(inputstr[i]); + i++; + } + str[i] = '\0'; + if (!strcmp(str, "TRACE_EMERG") || !strcmp(str, "EMERG")) { + return LTTNG_LOGLEVEL_EMERG; + } else if (!strcmp(str, "TRACE_ALERT") || !strcmp(str, "ALERT")) { + return LTTNG_LOGLEVEL_ALERT; + } else if (!strcmp(str, "TRACE_CRIT") || !strcmp(str, "CRIT")) { + return LTTNG_LOGLEVEL_CRIT; + } else if (!strcmp(str, "TRACE_ERR") || !strcmp(str, "ERR")) { + return LTTNG_LOGLEVEL_ERR; + } else if (!strcmp(str, "TRACE_WARNING") || !strcmp(str, "WARNING")) { + return LTTNG_LOGLEVEL_WARNING; + } else if (!strcmp(str, "TRACE_NOTICE") || !strcmp(str, "NOTICE")) { + return LTTNG_LOGLEVEL_NOTICE; + } else if (!strcmp(str, "TRACE_INFO") || !strcmp(str, "INFO")) { + return LTTNG_LOGLEVEL_INFO; + } else if (!strcmp(str, "TRACE_DEBUG_SYSTEM") || !strcmp(str, "DEBUG_SYSTEM") || !strcmp(str, "SYSTEM")) { + return LTTNG_LOGLEVEL_DEBUG_SYSTEM; + } else if (!strcmp(str, "TRACE_DEBUG_PROGRAM") || !strcmp(str, "DEBUG_PROGRAM") || !strcmp(str, "PROGRAM")) { + return LTTNG_LOGLEVEL_DEBUG_PROGRAM; + } else if (!strcmp(str, "TRACE_DEBUG_PROCESS") || !strcmp(str, "DEBUG_PROCESS") || !strcmp(str, "PROCESS")) { + return LTTNG_LOGLEVEL_DEBUG_PROCESS; + } else if (!strcmp(str, "TRACE_DEBUG_MODULE") || !strcmp(str, "DEBUG_MODULE") || !strcmp(str, "MODULE")) { + return LTTNG_LOGLEVEL_DEBUG_MODULE; + } else if (!strcmp(str, "TRACE_DEBUG_UNIT") || !strcmp(str, "DEBUG_UNIT") || !strcmp(str, "UNIT")) { + return LTTNG_LOGLEVEL_DEBUG_UNIT; + } else if (!strcmp(str, "TRACE_DEBUG_FUNCTION") || !strcmp(str, "DEBUG_FUNCTION") || !strcmp(str, "FUNCTION")) { + return LTTNG_LOGLEVEL_DEBUG_FUNCTION; + } else if (!strcmp(str, "TRACE_DEBUG_LINE") || !strcmp(str, "DEBUG_LINE") || !strcmp(str, "LINE")) { + return LTTNG_LOGLEVEL_DEBUG_LINE; + } else if (!strcmp(str, "TRACE_DEBUG") || !strcmp(str, "DEBUG")) { + return LTTNG_LOGLEVEL_DEBUG; + } else { + return -1; + } +} + /* * Enabling event using the lttng API. */ @@ -219,6 +305,17 @@ static int enable_events(char *session_name) struct lttng_event ev; struct lttng_domain dom; + memset(&ev, 0, sizeof(ev)); + memset(&dom, 0, sizeof(dom)); + + if (opt_kernel) { + if (opt_filter) { + ERR("Filter not implement for kernel tracing yet"); + ret = CMD_ERROR; + goto error; + } + } + /* Create lttng domain */ if (opt_kernel) { dom.type = LTTNG_DOMAIN_KERNEL; @@ -251,20 +348,59 @@ static int enable_events(char *session_name) if (opt_kernel) { ev.type = opt_event_type; ev.name[0] = '\0'; + /* kernel loglevels not implemented */ + ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; } else { ev.type = LTTNG_EVENT_TRACEPOINT; strcpy(ev.name, "*"); + ev.loglevel_type = opt_loglevel_type; + if (opt_loglevel) { + ev.loglevel = loglevel_str_to_value(opt_loglevel); + if (ev.loglevel == -1) { + ERR("Unknown loglevel %s", opt_loglevel); + ret = -1; + goto error; + } + } else { + ev.loglevel = -1; + } } ret = lttng_enable_event(handle, &ev, channel_name); if (ret < 0) { - goto error; + switch (-ret) { + case LTTNG_ERR_KERN_EVENT_EXIST: + WARN("Kernel events already enabled (channel %s, session %s)", + channel_name, session_name); + break; + default: + ERR("Events: %s (channel %s, session %s)", + lttng_strerror(ret), channel_name, session_name); + break; + } + goto end; + } + if (opt_filter) { + ret = lttng_set_event_filter(handle, ev.name, channel_name, + opt_filter); + if (ret < 0) { + ERR("Error setting filter"); + ret = -1; + goto error; + } } switch (opt_event_type) { case LTTNG_EVENT_TRACEPOINT: - MSG("All %s tracepoints are enabled in channel %s", - opt_kernel ? "kernel" : "UST", channel_name); + if (opt_loglevel) { + MSG("All %s tracepoints are enabled in channel %s for loglevel %s", + opt_kernel ? "kernel" : "UST", channel_name, + opt_loglevel); + } else { + MSG("All %s tracepoints are enabled in channel %s", + opt_kernel ? "kernel" : "UST", channel_name); + + } break; case LTTNG_EVENT_SYSCALL: if (opt_kernel) { @@ -273,8 +409,14 @@ static int enable_events(char *session_name) } break; case LTTNG_EVENT_ALL: - MSG("All %s events are enabled in channel %s", - opt_kernel ? "kernel" : "UST", channel_name); + if (opt_loglevel) { + MSG("All %s events are enabled in channel %s for loglevel %s", + opt_kernel ? "kernel" : "UST", channel_name, + opt_loglevel); + } else { + MSG("All %s events are enabled in channel %s", + opt_kernel ? "kernel" : "UST", channel_name); + } break; default: /* @@ -341,8 +483,7 @@ static int enable_events(char *session_name) } /* kernel loglevels not implemented */ - ev.loglevel_type = opt_loglevel_type; - ev.loglevel[0] = '\0'; + ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL; } else if (opt_userspace) { /* User-space tracer action */ #if 0 if (opt_cmd_name != NULL || opt_pid) { @@ -352,8 +493,8 @@ static int enable_events(char *session_name) } #endif - DBG("Enabling UST event %s for channel %s", event_name, - channel_name); + DBG("Enabling UST event %s for channel %s, loglevel %s", event_name, + channel_name, opt_loglevel ? : ""); switch (opt_event_type) { case LTTNG_EVENT_ALL: /* Default behavior is tracepoint */ @@ -369,31 +510,55 @@ static int enable_events(char *session_name) case LTTNG_EVENT_FUNCTION_ENTRY: case LTTNG_EVENT_SYSCALL: default: + ERR("Event type not available for user-space tracing"); ret = CMD_UNDEFINED; goto error; } ev.loglevel_type = opt_loglevel_type; if (opt_loglevel) { - strncpy(ev.loglevel, opt_loglevel, LTTNG_SYMBOL_NAME_LEN); - ev.loglevel[LTTNG_SYMBOL_NAME_LEN - 1] = '\0'; + ev.loglevel = loglevel_str_to_value(opt_loglevel); + if (ev.loglevel == -1) { + ERR("Unknown loglevel %s", opt_loglevel); + ret = -1; + goto error; + } } else { - ev.loglevel[0] = '\0'; + ev.loglevel = -1; } } else { ERR("Please specify a tracer (-k/--kernel or -u/--userspace)"); + ret = CMD_ERROR; goto error; } ret = lttng_enable_event(handle, &ev, channel_name); if (ret < 0) { - ERR("Event %s: %s (channel %s, session %s)", event_name, - lttng_strerror(ret), channel_name, session_name); + /* Turn ret to positive value to handle the positive error code */ + switch (-ret) { + case LTTNG_ERR_KERN_EVENT_EXIST: + WARN("Kernel event %s already enabled (channel %s, session %s)", + event_name, channel_name, session_name); + break; + default: + ERR("Event %s: %s (channel %s, session %s)", event_name, + lttng_strerror(ret), channel_name, session_name); + break; + } warn = 1; } else { MSG("%s event %s created in channel %s", opt_kernel ? "kernel": "UST", event_name, channel_name); } + if (opt_filter) { + ret = lttng_set_event_filter(handle, ev.name, + channel_name, opt_filter); + if (ret < 0) { + ERR("Error setting filter"); + ret = -1; + goto error; + } + } /* Next event */ event_name = strtok(NULL, ","); @@ -451,16 +616,18 @@ int cmd_enable_events(int argc, const char **argv) opt_userspace = 1; break; case OPT_LOGLEVEL: - opt_loglevel_type = LTTNG_EVENT_LOGLEVEL; + opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_RANGE; opt_loglevel = poptGetOptArg(pc); break; case OPT_LOGLEVEL_ONLY: - opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_ONLY; + opt_loglevel_type = LTTNG_EVENT_LOGLEVEL_SINGLE; opt_loglevel = poptGetOptArg(pc); break; case OPT_LIST_OPTIONS: list_cmd_options(stdout, long_options); goto end; + case OPT_FILTER: + break; default: usage(stderr); ret = CMD_UNDEFINED;