Fix: userspace probe accessors are not const-correct

The accessors of userspace probe locations and lookup methods
should be const. This commit marks them as such and modifies the
code using those functions to be, in turn, const-correct.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/include/lttng/event.h b/include/lttng/event.h
index 630d6c1188dd0255e71c11f4c487b4160df1a1ca..3f260c0a5d4479534fa86a2f2dac529245e66d9c 100644 (file)
--- a/include/lttng/event.h
+++ b/include/lttng/event.h
@@ -348,8 +348,8 @@ extern int lttng_event_get_exclusion_name(struct lttng_event *event,
  * If the event has no probe location a NULL pointer is returned. The caller
  * does not own the returned probe location.
  */
-extern struct lttng_userspace_probe_location *
-lttng_event_get_userspace_probe_location(struct lttng_event *event);
+extern const struct lttng_userspace_probe_location *
+lttng_event_get_userspace_probe_location(const struct lttng_event *event);
 
 /*
  * Set an LTTng event's userspace probe location.

diff --git a/include/lttng/userspace-probe.h b/include/lttng/userspace-probe.h
index c8c1ae43af4850cd4bc9baa72100561d2edc2b53..2d8c6f1257346dc22059d19441532a1ef3b8f962 100644 (file)
--- a/include/lttng/userspace-probe.h
+++ b/include/lttng/userspace-probe.h
@@ -126,7 +126,7 @@ extern int lttng_userspace_probe_location_function_get_binary_fd(
  *
  * The ownership of the lookup method is NOT transferred to the caller.
  */
-extern struct lttng_userspace_probe_location_lookup_method *
+extern const struct lttng_userspace_probe_location_lookup_method *
 lttng_userspace_probe_location_get_lookup_method(
                const struct lttng_userspace_probe_location *location);
 

diff --git a/src/bin/lttng-sessiond/kernel.c b/src/bin/lttng-sessiond/kernel.c
index f5979c9b4f2cf26028c8d4f6f120349b9a0eed9c..e7f1d54a02bde7ecb72ec2e16e122982aeae319c 100644 (file)
--- a/src/bin/lttng-sessiond/kernel.c
+++ b/src/bin/lttng-sessiond/kernel.c
@@ -203,16 +203,15 @@ error:
  */
 static
 int extract_userspace_probe_offset_function_elf(
-               struct lttng_userspace_probe_location *probe_location,
+               const struct lttng_userspace_probe_location *probe_location,
                struct ltt_kernel_session *session, uint64_t *offset)
 {
        int fd;
        int ret = 0;
        const char *symbol = NULL;
-       struct lttng_userspace_probe_location_lookup_method *lookup = NULL;
+       const struct lttng_userspace_probe_location_lookup_method *lookup = NULL;
        enum lttng_userspace_probe_location_lookup_method_type lookup_method_type;
 
-
        assert(lttng_userspace_probe_location_get_type(probe_location) ==
                        LTTNG_USERSPACE_PROBE_LOCATION_TYPE_FUNCTION);
 
@@ -266,12 +265,12 @@ end:
  */
 static
 int extract_userspace_probe_offset_tracepoint_sdt(
-               struct lttng_userspace_probe_location *probe_location,
+               const struct lttng_userspace_probe_location *probe_location,
                struct ltt_kernel_session *session, uint64_t **offsets,
                uint32_t *offsets_count)
 {
        enum lttng_userspace_probe_location_lookup_method_type lookup_method_type;
-       struct lttng_userspace_probe_location_lookup_method *lookup = NULL;
+       const struct lttng_userspace_probe_location_lookup_method *lookup = NULL;
        const char *probe_name = NULL, *provider_name = NULL;
        int ret = 0;
        int fd, i;
@@ -342,9 +341,9 @@ static
 int userspace_probe_add_callsites(struct lttng_event *ev,
                        struct ltt_kernel_session *session, int fd)
 {
-       struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL;
+       const struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL;
        enum lttng_userspace_probe_location_lookup_method_type type;
-       struct lttng_userspace_probe_location *location = NULL;
+       const struct lttng_userspace_probe_location *location = NULL;
        int ret;
 
        assert(ev);

diff --git a/src/bin/lttng-sessiond/main.c b/src/bin/lttng-sessiond/main.c
index 958aa0d04f0830385b9ad215fb38219489ce0847..ee50db21e38b2c29a400b1ccec0065f72f28900c 100644 (file)
--- a/src/bin/lttng-sessiond/main.c
+++ b/src/bin/lttng-sessiond/main.c
@@ -2937,7 +2937,7 @@ static int receive_userspace_probe(struct command_ctx *cmd_ctx, int sock,
 {
        int fd, ret;
        struct lttng_userspace_probe_location *probe_location;
-       struct lttng_userspace_probe_location_lookup_method *lookup = NULL;
+       const struct lttng_userspace_probe_location_lookup_method *lookup = NULL;
        struct lttng_dynamic_buffer probe_location_buffer;
        struct lttng_buffer_view buffer_view;
 

diff --git a/src/bin/lttng-sessiond/save.c b/src/bin/lttng-sessiond/save.c
index c0684711ac9c818ea43a13d2945c4f168c1d876b..e57f0e03a6b451b920592a6cb2a08d5f61d1fd29 100644 (file)
--- a/src/bin/lttng-sessiond/save.c
+++ b/src/bin/lttng-sessiond/save.c
@@ -504,8 +504,8 @@ int save_kernel_userspace_probe_tracepoint_event(struct config_writer *writer,
 {
        int ret = 0;
        const char *probe_name, *provider_name, *binary_path;
-       struct lttng_userspace_probe_location *userspace_probe_location;
-       struct lttng_userspace_probe_location_lookup_method *lookup_method;
+       const struct lttng_userspace_probe_location *userspace_probe_location;
+       const struct lttng_userspace_probe_location_lookup_method *lookup_method;
        enum lttng_userspace_probe_location_lookup_method_type lookup_type;
 
        /* Get userspace probe location from the event. */
@@ -618,8 +618,8 @@ int save_kernel_userspace_probe_function_event(struct config_writer *writer,
 {
        int ret = 0;
        const char *function_name, *binary_path;
-       struct lttng_userspace_probe_location *userspace_probe_location;
-       struct lttng_userspace_probe_location_lookup_method *lookup_method;
+       const struct lttng_userspace_probe_location *userspace_probe_location;
+       const struct lttng_userspace_probe_location_lookup_method *lookup_method;
        enum lttng_userspace_probe_location_lookup_method_type lookup_type;
 
        /* Get userspace probe location from the event. */

diff --git a/src/bin/lttng-sessiond/trace-kernel.c b/src/bin/lttng-sessiond/trace-kernel.c
index dcb1bd647b9a0a622b6cbd39c94979d1e0d30e1a..b9d03a72e002ca0042764a877f0ae556e87f1faa 100644 (file)
--- a/src/bin/lttng-sessiond/trace-kernel.c
+++ b/src/bin/lttng-sessiond/trace-kernel.c
@@ -328,8 +328,8 @@ enum lttng_error_code trace_kernel_create_event(
                break;
        case LTTNG_EVENT_USERSPACE_PROBE:
        {
-               struct lttng_userspace_probe_location* location = NULL;
-               struct lttng_userspace_probe_location_lookup_method *lookup = NULL;
+               const struct lttng_userspace_probe_location* location = NULL;
+               const struct lttng_userspace_probe_location_lookup_method *lookup = NULL;
 
                location = lttng_event_get_userspace_probe_location(ev);
                if (!location) {

diff --git a/src/bin/lttng/commands/list.c b/src/bin/lttng/commands/list.c
index be252ab7600c3299e0243df68338b703d19c9fa7..eabeb8132ecd36c6e15fb996cb8bdba96b61249d 100644 (file)
--- a/src/bin/lttng/commands/list.c
+++ b/src/bin/lttng/commands/list.c
@@ -251,8 +251,8 @@ end:
 
 static void print_userspace_probe_location(struct lttng_event *event)
 {
-       struct lttng_userspace_probe_location *location;
-       struct lttng_userspace_probe_location_lookup_method *lookup_method;
+       const struct lttng_userspace_probe_location *location;
+       const struct lttng_userspace_probe_location_lookup_method *lookup_method;
        enum lttng_userspace_probe_location_lookup_method_type lookup_type;
 
        location = lttng_event_get_userspace_probe_location(event);

diff --git a/src/common/mi-lttng.c b/src/common/mi-lttng.c
index 0191cbd0f6d09f7e6c83db096027f209c7f91795..69b3cc041de0d42c44333d7ab8c84d5ff7e52473 100644 (file)
--- a/src/common/mi-lttng.c
+++ b/src/common/mi-lttng.c
@@ -1280,8 +1280,8 @@ int mi_lttng_event_userspace_probe(struct mi_writer *writer,
                struct lttng_event *event)
 {
        int ret;
-       struct lttng_userspace_probe_location *location;
-       struct lttng_userspace_probe_location_lookup_method *lookup_method;
+       const struct lttng_userspace_probe_location *location;
+       const struct lttng_userspace_probe_location_lookup_method *lookup_method;
        enum lttng_userspace_probe_location_lookup_method_type lookup_type;
 
        location = lttng_event_get_userspace_probe_location(event);

diff --git a/src/common/userspace-probe.c b/src/common/userspace-probe.c
index ea3c93bcde840242d4871084394f6ebe0d75ec11..89066bf0549a553df0564528d450a7763910ccc0 100644 (file)
--- a/src/common/userspace-probe.c
+++ b/src/common/userspace-probe.c
@@ -764,7 +764,7 @@ end:
        return ret;
 }
 
-struct lttng_userspace_probe_location_lookup_method *
+const struct lttng_userspace_probe_location_lookup_method *
 lttng_userspace_probe_location_get_lookup_method(
                const struct lttng_userspace_probe_location *location)
 {

diff --git a/src/lib/lttng-ctl/event.c b/src/lib/lttng-ctl/event.c
index 046028cd219a46b25866770c1d8c96b8405092a2..44e4864c02cdb0552663b4a57537df2b3dde75fb 100644 (file)
--- a/src/lib/lttng-ctl/event.c
+++ b/src/lib/lttng-ctl/event.c
@@ -197,8 +197,8 @@ end:
        return ret;
 }
 
-struct lttng_userspace_probe_location *
-lttng_event_get_userspace_probe_location(struct lttng_event *event)
+const struct lttng_userspace_probe_location *
+lttng_event_get_userspace_probe_location(const struct lttng_event *event)
 {
        struct lttng_userspace_probe_location *probe_location = NULL;
        struct lttng_event_extended *event_extended;