/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
*
- * 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.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#define _LGPL_SOURCE
#include <common/sessiond-comm/sessiond-comm.h>
#include <common/compat/string.h>
+#include <common/compat/getenv.h>
#include <common/string-utils/string-utils.h>
+#include <common/utils.h>
+#include <lttng/constant.h>
/* Mi dependancy */
#include <common/mi-lttng.h>
+#include <lttng/event-internal.h>
+
#include "../command.h"
+#include "../uprobe.h"
#if (LTTNG_SYMBOL_NAME_LEN == 256)
#define LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "255"
static int opt_python;
static int opt_enable_all;
static char *opt_probe;
+static char *opt_userspace_probe;
static char *opt_function;
static char *opt_channel_name;
static char *opt_filter;
OPT_HELP = 1,
OPT_TRACEPOINT,
OPT_PROBE,
+ OPT_USERSPACE_PROBE,
OPT_FUNCTION,
OPT_SYSCALL,
OPT_USERSPACE,
{"python", 'p', POPT_ARG_VAL, &opt_python, 1, 0, 0},
{"tracepoint", 0, POPT_ARG_NONE, 0, OPT_TRACEPOINT, 0, 0},
{"probe", 0, POPT_ARG_STRING, &opt_probe, OPT_PROBE, 0, 0},
+ {"userspace-probe",0, POPT_ARG_STRING, &opt_userspace_probe, OPT_USERSPACE_PROBE, 0, 0},
{"function", 0, POPT_ARG_STRING, &opt_function, OPT_FUNCTION, 0, 0},
{"syscall", 0, POPT_ARG_NONE, 0, OPT_SYSCALL, 0, 0},
{"loglevel", 0, POPT_ARG_STRING, 0, OPT_LOGLEVEL, 0, 0},
}
/* Check for symbol */
- if (isalpha(name[0])) {
+ if (isalpha(name[0]) || name[0] == '_') {
match = sscanf(opt, "%" LTTNG_SYMBOL_NAME_LEN_SCANF_IS_A_BROKEN_API "s",
name);
if (match == 1) {
/* Check for address */
match = sscanf(opt, "%" S_HEX_LEN_SCANF_IS_A_BROKEN_API "s", s_hex);
if (match > 0) {
- if (*s_hex == '\0') {
- ERR("Invalid probe address %s", s_hex);
+ /*
+ * Return an error if the first character of the tentative
+ * address is NULL or not a digit. It can be "0" if the address
+ * is in hexadecimal and can be 1 to 9 if it's in decimal.
+ */
+ if (*s_hex == '\0' || !isdigit(*s_hex)) {
+ ERR("Invalid probe description %s", s_hex);
ret = CMD_ERROR;
goto end;
}
/*
* Maps LOG4j loglevel from string to value
*/
-static int loglevel_log4j_str_to_value(const char *inputstr)
+LTTNG_HIDDEN
+int loglevel_log4j_str_to_value(const char *inputstr)
{
int i = 0;
char str[LTTNG_SYMBOL_NAME_LEN];
/*
* Maps JUL loglevel from string to value
*/
-static int loglevel_jul_str_to_value(const char *inputstr)
+LTTNG_HIDDEN
+int loglevel_jul_str_to_value(const char *inputstr)
{
int i = 0;
char str[LTTNG_SYMBOL_NAME_LEN];
/*
* Maps Python loglevel from string to value
*/
-static int loglevel_python_str_to_value(const char *inputstr)
+LTTNG_HIDDEN
+int loglevel_python_str_to_value(const char *inputstr)
{
int i = 0;
char str[LTTNG_SYMBOL_NAME_LEN];
/*
* Maps loglevel from string to value
*/
-static
+LTTNG_HIDDEN
int loglevel_str_to_value(const char *inputstr)
{
int i = 0;
{
int length = 0;
int i;
- const char *preamble = " excluding ";
+ const char preamble[] = " excluding ";
char *ret;
int count = names ? strutils_array_of_strings_len(names) : 0;
length += strlen(names[i]) + 4;
}
- /* add length of preamble + one for NUL - one for last (missing) comma */
- length += strlen(preamble);
- ret = zmalloc(length + 1);
+ length += sizeof(preamble);
+ ret = zmalloc(length);
if (!ret) {
return NULL;
}
return ret;
}
-static
+/*
+ * FIXME: find a good place to declare this since add trigger also uses it
+ */
+LTTNG_HIDDEN
+int create_exclusion_list_and_validate(const char *event_name,
+ const char *exclusions_arg,
+ char ***exclusion_list);
+
+
+LTTNG_HIDDEN
int create_exclusion_list_and_validate(const char *event_name,
const char *exclusions_arg,
char ***exclusion_list)
int ret = CMD_SUCCESS, command_ret = CMD_SUCCESS;
int error_holder = CMD_SUCCESS, warn = 0, error = 0, success = 1;
char *event_name, *channel_name = NULL;
- struct lttng_event ev;
+ struct lttng_event *ev;
struct lttng_domain dom;
char **exclusion_list = NULL;
+ struct lttng_userspace_probe_location *uprobe_loc = NULL;
- memset(&ev, 0, sizeof(ev));
memset(&dom, 0, sizeof(dom));
+ ev = lttng_event_create();
+ if (!ev) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
if (opt_kernel) {
if (opt_loglevel) {
WARN("Kernel loglevels are not supported.");
}
}
+ /*
+ * Adding a filter to a probe, function or userspace-probe would be
+ * denied by the kernel tracer as it's not supported at the moment. We
+ * do an early check here to warn the user.
+ */
+ if (opt_filter && opt_kernel) {
+ switch (opt_event_type) {
+ case LTTNG_EVENT_ALL:
+ case LTTNG_EVENT_TRACEPOINT:
+ case LTTNG_EVENT_SYSCALL:
+ break;
+ case LTTNG_EVENT_PROBE:
+ case LTTNG_EVENT_USERSPACE_PROBE:
+ case LTTNG_EVENT_FUNCTION:
+ ERR("Filter expressions are not supported for %s events",
+ get_event_type_str(opt_event_type));
+ ret = CMD_ERROR;
+ goto error;
+ default:
+ ret = CMD_UNDEFINED;
+ goto error;
+ }
+ }
+
channel_name = opt_channel_name;
handle = lttng_create_handle(session_name, &dom);
if (opt_enable_all) {
/* Default setup for enable all */
if (opt_kernel) {
- ev.type = opt_event_type;
- strcpy(ev.name, "*");
+ ev->type = opt_event_type;
+ strcpy(ev->name, "*");
/* kernel loglevels not implemented */
- ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
+ ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
} else {
- ev.type = LTTNG_EVENT_TRACEPOINT;
- strcpy(ev.name, "*");
- ev.loglevel_type = opt_loglevel_type;
+ ev->type = LTTNG_EVENT_TRACEPOINT;
+ strcpy(ev->name, "*");
+ ev->loglevel_type = opt_loglevel_type;
if (opt_loglevel) {
assert(opt_userspace || opt_jul || opt_log4j || opt_python);
if (opt_userspace) {
- ev.loglevel = loglevel_str_to_value(opt_loglevel);
+ ev->loglevel = loglevel_str_to_value(opt_loglevel);
} else if (opt_jul) {
- ev.loglevel = loglevel_jul_str_to_value(opt_loglevel);
+ ev->loglevel = loglevel_jul_str_to_value(opt_loglevel);
} else if (opt_log4j) {
- ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel);
+ ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel);
} else if (opt_python) {
- ev.loglevel = loglevel_python_str_to_value(opt_loglevel);
+ ev->loglevel = loglevel_python_str_to_value(opt_loglevel);
}
- if (ev.loglevel == -1) {
+ if (ev->loglevel == -1) {
ERR("Unknown loglevel %s", opt_loglevel);
ret = -LTTNG_ERR_INVALID;
goto error;
} else {
assert(opt_userspace || opt_jul || opt_log4j || opt_python);
if (opt_userspace) {
- ev.loglevel = -1;
+ ev->loglevel = -1;
} else if (opt_jul) {
- ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
+ ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL;
} else if (opt_log4j) {
- ev.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
+ ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
} else if (opt_python) {
- ev.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
+ ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
}
}
}
goto error;
}
- ev.exclusion = 1;
+ ev->exclusion = 1;
warn_on_truncated_exclusion_names(exclusion_list,
&warn);
}
if (!opt_filter) {
ret = lttng_enable_event_with_exclusions(handle,
- &ev, channel_name,
+ ev, channel_name,
NULL,
exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0,
exclusion_list);
}
if (opt_filter) {
- command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name,
+ command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name,
opt_filter,
exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0,
exclusion_list);
}
error_holder = command_ret;
} else {
- ev.filter = 1;
+ ev->filter = 1;
MSG("Filter '%s' successfully set", opt_filter);
}
}
* Note: this is strictly for semantic and printing while in
* machine interface mode.
*/
- strcpy(ev.name, "*");
+ strcpy(ev->name, "*");
/* If we reach here the events are enabled */
if (!error && !warn) {
- ev.enabled = 1;
+ ev->enabled = 1;
} else {
- ev.enabled = 0;
+ ev->enabled = 0;
success = 0;
}
- ret = mi_lttng_event(writer, &ev, 1, handle->domain.type);
+ ret = mi_lttng_event(writer, ev, 1, handle->domain.type);
if (ret) {
ret = CMD_ERROR;
goto error;
event_name = strtok(opt_event_list, ",");
while (event_name != NULL) {
/* Copy name and type of the event */
- strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
- ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
- ev.type = opt_event_type;
+ strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN);
+ ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
+ ev->type = opt_event_type;
/* Kernel tracer action */
if (opt_kernel) {
switch (opt_event_type) {
case LTTNG_EVENT_ALL: /* Enable tracepoints and syscalls */
/* If event name differs from *, select tracepoint. */
- if (strcmp(ev.name, "*")) {
- ev.type = LTTNG_EVENT_TRACEPOINT;
+ if (strcmp(ev->name, "*")) {
+ ev->type = LTTNG_EVENT_TRACEPOINT;
}
break;
case LTTNG_EVENT_TRACEPOINT:
break;
case LTTNG_EVENT_PROBE:
- ret = parse_probe_opts(&ev, opt_probe);
+ ret = parse_probe_opts(ev, opt_probe);
if (ret) {
ERR("Unable to parse probe options");
- ret = 0;
+ ret = CMD_ERROR;
+ goto error;
+ }
+ break;
+ case LTTNG_EVENT_USERSPACE_PROBE:
+ assert(ev->type == LTTNG_EVENT_USERSPACE_PROBE);
+
+ ret = parse_userspace_probe_opts(opt_userspace_probe, &uprobe_loc);
+ if (ret) {
+ switch (ret) {
+ case CMD_UNSUPPORTED:
+ /*
+ * Error message describing
+ * what is not supported was
+ * printed in the function.
+ */
+ break;
+ case CMD_ERROR:
+ default:
+ ERR("Unable to parse userspace probe options");
+ break;
+ }
+ goto error;
+ }
+
+ ret = lttng_event_set_userspace_probe_location(ev, uprobe_loc);
+ if (ret) {
+ WARN("Failed to set probe location on event");
+ ret = CMD_ERROR;
goto error;
}
+
+ /* Ownership of the uprobe location was transferred to the event. */
+ uprobe_loc = NULL;
break;
case LTTNG_EVENT_FUNCTION:
- ret = parse_probe_opts(&ev, opt_function);
+ ret = parse_probe_opts(ev, opt_function);
if (ret) {
ERR("Unable to parse function probe options");
- ret = 0;
+ ret = CMD_ERROR;
goto error;
}
break;
case LTTNG_EVENT_SYSCALL:
- ev.type = LTTNG_EVENT_SYSCALL;
+ ev->type = LTTNG_EVENT_SYSCALL;
break;
default:
ret = CMD_UNDEFINED;
}
/* kernel loglevels not implemented */
- ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
+ ev->loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
} else if (opt_userspace) { /* User-space tracer action */
DBG("Enabling UST event %s for channel %s, loglevel %s", event_name,
print_channel_name(channel_name), opt_loglevel ? : "<all>");
/* Fall-through */
case LTTNG_EVENT_TRACEPOINT:
/* Copy name and type of the event */
- ev.type = LTTNG_EVENT_TRACEPOINT;
- strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
- ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
+ ev->type = LTTNG_EVENT_TRACEPOINT;
+ strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN);
+ ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
break;
case LTTNG_EVENT_PROBE:
case LTTNG_EVENT_FUNCTION:
case LTTNG_EVENT_SYSCALL:
+ case LTTNG_EVENT_USERSPACE_PROBE:
default:
ERR("Event type not available for user-space tracing");
ret = CMD_UNSUPPORTED;
}
if (opt_exclude) {
- ev.exclusion = 1;
+ ev->exclusion = 1;
if (opt_event_type != LTTNG_EVENT_ALL && opt_event_type != LTTNG_EVENT_TRACEPOINT) {
ERR("Exclusion option can only be used with tracepoint events");
ret = CMD_ERROR;
exclusion_list, &warn);
}
- ev.loglevel_type = opt_loglevel_type;
+ ev->loglevel_type = opt_loglevel_type;
if (opt_loglevel) {
- ev.loglevel = loglevel_str_to_value(opt_loglevel);
- if (ev.loglevel == -1) {
+ ev->loglevel = loglevel_str_to_value(opt_loglevel);
+ if (ev->loglevel == -1) {
ERR("Unknown loglevel %s", opt_loglevel);
ret = -LTTNG_ERR_INVALID;
goto error;
}
} else {
- ev.loglevel = -1;
+ ev->loglevel = -1;
}
} else if (opt_jul || opt_log4j || opt_python) {
if (opt_event_type != LTTNG_EVENT_ALL &&
goto error;
}
- ev.loglevel_type = opt_loglevel_type;
+ ev->loglevel_type = opt_loglevel_type;
if (opt_loglevel) {
if (opt_jul) {
- ev.loglevel = loglevel_jul_str_to_value(opt_loglevel);
+ ev->loglevel = loglevel_jul_str_to_value(opt_loglevel);
} else if (opt_log4j) {
- ev.loglevel = loglevel_log4j_str_to_value(opt_loglevel);
+ ev->loglevel = loglevel_log4j_str_to_value(opt_loglevel);
} else if (opt_python) {
- ev.loglevel = loglevel_python_str_to_value(opt_loglevel);
+ ev->loglevel = loglevel_python_str_to_value(opt_loglevel);
}
- if (ev.loglevel == -1) {
+ if (ev->loglevel == -1) {
ERR("Unknown loglevel %s", opt_loglevel);
ret = -LTTNG_ERR_INVALID;
goto error;
}
} else {
if (opt_jul) {
- ev.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
+ ev->loglevel = LTTNG_LOGLEVEL_JUL_ALL;
} else if (opt_log4j) {
- ev.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
+ ev->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
} else if (opt_python) {
- ev.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
+ ev->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
}
}
- ev.type = LTTNG_EVENT_TRACEPOINT;
- strncpy(ev.name, event_name, LTTNG_SYMBOL_NAME_LEN);
- ev.name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
+ ev->type = LTTNG_EVENT_TRACEPOINT;
+ strncpy(ev->name, event_name, LTTNG_SYMBOL_NAME_LEN);
+ ev->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
} else {
assert(0);
}
char *exclusion_string;
command_ret = lttng_enable_event_with_exclusions(handle,
- &ev, channel_name,
+ ev, channel_name,
NULL,
exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0,
exclusion_list);
error = 1;
break;
}
+ case LTTNG_ERR_SDT_PROBE_SEMAPHORE:
+ ERR("SDT probes %s guarded by semaphores are not supported (channel %s, session %s)",
+ event_name, print_channel_name(channel_name),
+ session_name);
+ error = 1;
+ break;
default:
ERR("Event %s%s: %s (channel %s, session %s)", event_name,
exclusion_string,
char *exclusion_string;
/* Filter present */
- ev.filter = 1;
+ ev->filter = 1;
- command_ret = lttng_enable_event_with_exclusions(handle, &ev, channel_name,
+ command_ret = lttng_enable_event_with_exclusions(handle, ev, channel_name,
opt_filter,
exclusion_list ? strutils_array_of_strings_len(exclusion_list) : 0,
exclusion_list);
case LTTNG_ERR_TRACE_ALREADY_STARTED:
{
const char *msg = "The command tried to enable an event in a new domain for a session that has already been started once.";
- ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev.name,
+ ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name,
exclusion_string,
msg,
print_channel_name(channel_name),
break;
}
default:
- ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev.name,
+ ERR("Event %s%s: %s (channel %s, session %s, filter \'%s\')", ev->name,
exclusion_string,
lttng_strerror(command_ret),
command_ret == -LTTNG_ERR_NEED_CHANNEL_NAME
if (lttng_opt_mi) {
if (command_ret) {
success = 0;
- ev.enabled = 0;
+ ev->enabled = 0;
} else {
- ev.enabled = 1;
+ ev->enabled = 1;
}
- ret = mi_lttng_event(writer, &ev, 1, handle->domain.type);
+ ret = mi_lttng_event(writer, ev, 1, handle->domain.type);
if (ret) {
ret = CMD_ERROR;
goto error;
}
lttng_destroy_handle(handle);
strutils_free_null_terminated_array_of_strings(exclusion_list);
+ lttng_userspace_probe_location_destroy(uprobe_loc);
/* Overwrite ret with error_holder if there was an actual error with
* enabling an event.
*/
ret = error_holder ? error_holder : ret;
+ lttng_event_destroy(ev);
return ret;
}
int opt, ret = CMD_SUCCESS, command_ret = CMD_SUCCESS, success = 1;
static poptContext pc;
char *session_name = NULL;
+ const char *leftover = NULL;
int event_type = -1;
pc = poptGetContext(NULL, argc, argv, long_options, 0);
case OPT_PROBE:
opt_event_type = LTTNG_EVENT_PROBE;
break;
+ case OPT_USERSPACE_PROBE:
+ opt_event_type = LTTNG_EVENT_USERSPACE_PROBE;
+ break;
case OPT_FUNCTION:
opt_event_type = LTTNG_EVENT_FUNCTION;
break;
}
ret = print_missing_or_multiple_domains(
- opt_kernel + opt_userspace + opt_jul + opt_log4j + opt_python);
+ opt_kernel + opt_userspace + opt_jul + opt_log4j +
+ opt_python,
+ true);
if (ret) {
ret = CMD_ERROR;
goto end;
goto end;
}
+ leftover = poptGetArg(pc);
+ if (leftover) {
+ ERR("Unknown argument: %s", leftover);
+ ret = CMD_ERROR;
+ goto end;
+ }
+
if (!opt_session_name) {
session_name = get_session_name();
if (session_name == NULL) {
projects / lttng-tools.git / blobdiff