*/
#include <assert.h>
+#include <common/credentials.h>
#include <common/error.h>
#include <common/macros.h>
#include <common/payload.h>
#include <common/payload-view.h>
#include <common/runas.h>
+#include <common/hashtable/hashtable.h>
+#include <common/hashtable/utils.h>
+#include <common/string-utils/string-utils.h>
#include <lttng/event-rule/event-rule-internal.h>
#include <lttng/event-rule/syscall-internal.h>
syscall_comm.pattern_len = pattern_len;
syscall_comm.filter_expression_len = filter_expression_len;
+ syscall_comm.emission_site = syscall->emission_site;
ret = lttng_dynamic_buffer_append(
&payload->buffer, &syscall_comm, sizeof(syscall_comm));
}
static enum lttng_error_code lttng_event_rule_syscall_generate_filter_bytecode(
- struct lttng_event_rule *rule, uid_t uid, gid_t gid)
+ struct lttng_event_rule *rule,
+ const struct lttng_credentials *creds)
{
int ret;
enum lttng_error_code ret_code = LTTNG_OK;
struct lttng_event_rule_syscall *syscall;
enum lttng_event_rule_status status;
const char *filter;
- struct lttng_filter_bytecode *bytecode = NULL;
+ struct lttng_bytecode *bytecode = NULL;
assert(rule);
}
ret = run_as_generate_filter_bytecode(
- syscall->internal_filter.filter, uid, gid, &bytecode);
+ syscall->internal_filter.filter, creds, &bytecode);
if (ret) {
ret_code = LTTNG_ERR_FILTER_INVAL;
}
return syscall->internal_filter.filter;
}
-static const struct lttng_filter_bytecode *
+static const struct lttng_bytecode *
lttng_event_rule_syscall_get_internal_filter_bytecode(
const struct lttng_event_rule *rule)
{
return syscall->internal_filter.bytecode;
}
-static struct lttng_event_exclusion *
-lttng_event_rule_syscall_generate_exclusions(
+static enum lttng_event_rule_generate_exclusions_status
+lttng_event_rule_syscall_generate_exclusions(const struct lttng_event_rule *rule,
+ struct lttng_event_exclusion **exclusions)
+{
+ /* Unsupported. */
+ *exclusions = NULL;
+ return LTTNG_EVENT_RULE_GENERATE_EXCLUSIONS_STATUS_NONE;
+}
+
+static unsigned long
+lttng_event_rule_syscall_hash(
const struct lttng_event_rule *rule)
{
- /* Not supported. */
- return NULL;
+ unsigned long hash;
+ struct lttng_event_rule_syscall *syscall_rule =
+ container_of(rule, typeof(*syscall_rule), parent);
+
+ hash = hash_key_ulong((void *) LTTNG_EVENT_RULE_TYPE_SYSCALL,
+ lttng_ht_seed);
+ hash ^= hash_key_str(syscall_rule->pattern, lttng_ht_seed);
+ if (syscall_rule->filter_expression) {
+ hash ^= hash_key_str(syscall_rule->filter_expression,
+ lttng_ht_seed);
+ }
+
+ return hash;
}
-struct lttng_event_rule *lttng_event_rule_syscall_create()
+struct lttng_event_rule *lttng_event_rule_syscall_create(
+ enum lttng_event_rule_syscall_emission_site
+ emission_site)
{
struct lttng_event_rule *rule = NULL;
struct lttng_event_rule_syscall *syscall_rule;
+ enum lttng_event_rule_status status;
+
+ /* Validate the emission site type */
+ switch (emission_site) {
+ case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_ENTRY_EXIT:
+ case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_ENTRY:
+ case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_EXIT:
+ break;
+ default:
+ /* Invalid emission type */
+ goto end;
+ }
syscall_rule = zmalloc(sizeof(struct lttng_event_rule_syscall));
if (!syscall_rule) {
lttng_event_rule_syscall_get_internal_filter_bytecode;
syscall_rule->parent.generate_exclusions =
lttng_event_rule_syscall_generate_exclusions;
+ syscall_rule->parent.hash = lttng_event_rule_syscall_hash;
+
+ /* Default pattern is '*'. */
+ status = lttng_event_rule_syscall_set_name_pattern(rule, "*");
+ if (status != LTTNG_EVENT_RULE_STATUS_OK) {
+ lttng_event_rule_destroy(rule);
+ rule = NULL;
+ }
+
+ /* Emission site type */
+ syscall_rule->emission_site = emission_site;
+
end:
return rule;
}
current_buffer_view = lttng_buffer_view_from_view(
&view->buffer, offset, sizeof(*syscall_comm));
- syscall_comm = (typeof(syscall_comm)) current_buffer_view.data;
-
- if (!syscall_comm) {
+ if (!lttng_buffer_view_is_valid(¤t_buffer_view)) {
ret = -1;
goto end;
}
- rule = lttng_event_rule_syscall_create();
+ syscall_comm = (typeof(syscall_comm)) current_buffer_view.data;
+ rule = lttng_event_rule_syscall_create(syscall_comm->emission_site);
if (!rule) {
ERR("Failed to create event rule syscall");
ret = -1;
/* Map the pattern. */
current_buffer_view = lttng_buffer_view_from_view(
&view->buffer, offset, syscall_comm->pattern_len);
- pattern = current_buffer_view.data;
- if (!pattern) {
+ if (!lttng_buffer_view_is_valid(¤t_buffer_view)) {
ret = -1;
goto end;
}
+ pattern = current_buffer_view.data;
if (!lttng_buffer_view_contains_string(¤t_buffer_view, pattern,
syscall_comm->pattern_len)) {
ret = -1;
/* Map the filter_expression. */
current_buffer_view = lttng_buffer_view_from_view(&view->buffer, offset,
syscall_comm->filter_expression_len);
- filter_expression = current_buffer_view.data;
- if (!filter_expression) {
+ if (!lttng_buffer_view_is_valid(¤t_buffer_view)) {
ret = -1;
goto end;
}
+ filter_expression = current_buffer_view.data;
if (!lttng_buffer_view_contains_string(¤t_buffer_view,
filter_expression,
syscall_comm->filter_expression_len)) {
skip_filter_expression:
- status = lttng_event_rule_syscall_set_pattern(rule, pattern);
+ status = lttng_event_rule_syscall_set_name_pattern(rule, pattern);
if (status != LTTNG_EVENT_RULE_STATUS_OK) {
ERR("Failed to set event rule syscall pattern");
ret = -1;
return ret;
}
-enum lttng_event_rule_status lttng_event_rule_syscall_set_pattern(
+enum lttng_event_rule_status lttng_event_rule_syscall_set_name_pattern(
struct lttng_event_rule *rule, const char *pattern)
{
char *pattern_copy = NULL;
goto end;
}
- if (syscall->pattern) {
- free(syscall->pattern);
- }
+ strutils_normalize_star_glob_pattern(pattern_copy);
+
+ free(syscall->pattern);
syscall->pattern = pattern_copy;
pattern_copy = NULL;
return status;
}
-enum lttng_event_rule_status lttng_event_rule_syscall_get_pattern(
+enum lttng_event_rule_status lttng_event_rule_syscall_get_name_pattern(
const struct lttng_event_rule *rule, const char **pattern)
{
struct lttng_event_rule_syscall *syscall;
end:
return status;
}
+extern enum lttng_event_rule_syscall_emission_site
+lttng_event_rule_syscall_get_emission_site(
+ const struct lttng_event_rule *rule)
+{
+ enum lttng_event_rule_syscall_emission_site emission_site =
+ LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_UNKNOWN;
+ struct lttng_event_rule_syscall *syscall;
+
+ if (!rule || !IS_SYSCALL_EVENT_RULE(rule)) {
+ goto end;
+ }
+
+ syscall = container_of(rule, struct lttng_event_rule_syscall, parent);
+ emission_site = syscall->emission_site;
+
+end:
+ return emission_site;
+}
+
+LTTNG_HIDDEN
+const char *lttng_event_rule_syscall_emission_site_str(
+ enum lttng_event_rule_syscall_emission_site emission_site)
+{
+ switch (emission_site) {
+ case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_ENTRY:
+ return "entry";
+ case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_ENTRY_EXIT:
+ return "entry+exit";
+ case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_EXIT:
+ return "exit";
+ default:
+ return "???";
+ }
+}