Add SDT userspace probe location
[lttng-tools.git] / include / lttng / userspace-probe-internal.h
index 3e8eecbcfc15723a07f406b5ba0db283f7e47644..8708ec01c4dad7d2931f48ad67c03a759c2c23af 100644 (file)
@@ -44,6 +44,10 @@ struct lttng_userspace_probe_location_lookup_method_elf {
        struct lttng_userspace_probe_location_lookup_method parent;
 };
 
+struct lttng_userspace_probe_location_lookup_method_sdt {
+       struct lttng_userspace_probe_location_lookup_method parent;
+};
+
 struct lttng_userspace_probe_location_comm {
        /* enum lttng_userspace_probe_location_type */
        int8_t type;
@@ -67,6 +71,20 @@ struct lttng_userspace_probe_location_function_comm {
        char payload[];
 } LTTNG_PACKED;
 
+struct lttng_userspace_probe_location_tracepoint_comm {
+       /* The three lengths include the trailing \0. */
+       uint32_t probe_name_len;
+       uint32_t provider_name_len;
+       uint32_t binary_path_len;
+       /*
+        * Payload is composed of, in that order,
+        *   - probe name (with trailing \0),
+        *   - provider name (with trailing \0),
+        *   - absolute binary path (with trailing \0)
+        */
+       char payload[];
+} LTTNG_PACKED;
+
 /* Common ancestor of all userspace probe locations. */
 struct lttng_userspace_probe_location {
        enum lttng_userspace_probe_location_type type;
@@ -86,6 +104,20 @@ struct lttng_userspace_probe_location_function {
        int binary_fd;
 };
 
+struct lttng_userspace_probe_location_tracepoint {
+       struct lttng_userspace_probe_location parent;
+       char *probe_name;
+       char *provider_name;
+       char *binary_path;
+       /*
+        * binary_fd is a file descriptor to the executable file. It's open
+        * early on to keep the backing inode valid over the course of the
+        * intrumentation and use. It prevents deletion and reuse races.
+        * Set to -1 if not open.
+        */
+       int binary_fd;
+};
+
 LTTNG_HIDDEN
 int lttng_userspace_probe_location_serialize(
                const struct lttng_userspace_probe_location *location,
@@ -101,6 +133,10 @@ LTTNG_HIDDEN
 int lttng_userspace_probe_location_function_set_binary_fd(
                struct lttng_userspace_probe_location *location, int binary_fd);
 
+LTTNG_HIDDEN
+int lttng_userspace_probe_location_tracepoint_set_binary_fd(
+               struct lttng_userspace_probe_location *location, int binary_fd);
+
 /*
  * Returns a version of the location that is serialized to a contiguous region
  * of memory. Pass NULL to buffer to only get the storage requirement of the
@@ -111,4 +147,8 @@ int lttng_userspace_probe_location_flatten(
                const struct lttng_userspace_probe_location *location,
                struct lttng_dynamic_buffer *buffer);
 
+LTTNG_HIDDEN
+struct lttng_userspace_probe_location *lttng_userspace_probe_location_copy(
+               const struct lttng_userspace_probe_location *location);
+
 #endif /* LTTNG_USERSPACE_PROBE_INTERNAL_H */
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