common trace-chunk: introduce lttng_trace_chunk_get_name_overridden

[lttng-tools.git] / src / common / trace-chunk.h

diff --git a/src/common/trace-chunk.h b/src/common/trace-chunk.h
index 474e9e000d2caf671eb3578fac1ca6edc3ac3041..7135b01939fdbe50b1544a4d5bf6b347378986ce 100644 (file)
--- a/src/common/trace-chunk.h
+++ b/src/common/trace-chunk.h
@@ -68,11 +68,14 @@ enum lttng_trace_chunk_status {
        LTTNG_TRACE_CHUNK_STATUS_INVALID_ARGUMENT,
        LTTNG_TRACE_CHUNK_STATUS_INVALID_OPERATION,
        LTTNG_TRACE_CHUNK_STATUS_ERROR,
+       LTTNG_TRACE_CHUNK_STATUS_NO_FILE,
 };
 
 enum lttng_trace_chunk_command_type {
        LTTNG_TRACE_CHUNK_COMMAND_TYPE_MOVE_TO_COMPLETED = 0,
-       LTTNG_TRACE_CHUNK_COMMAND_TYPE_MAX
+       LTTNG_TRACE_CHUNK_COMMAND_TYPE_NO_OPERATION = 1,
+       LTTNG_TRACE_CHUNK_COMMAND_TYPE_DELETE = 2,
+       LTTNG_TRACE_CHUNK_COMMAND_TYPE_MAX,
 };
 
 LTTNG_HIDDEN
@@ -83,6 +86,15 @@ struct lttng_trace_chunk *lttng_trace_chunk_create(
                uint64_t chunk_id,
                time_t chunk_creation_time);
 
+/*
+ * Copy a trace chunk. The copy that is returned is always a _user_
+ * mode chunk even if the source chunk was an _owner_ as there can never be
+ * two _owners_ of the same trace output.
+ */
+LTTNG_HIDDEN
+struct lttng_trace_chunk *lttng_trace_chunk_copy(
+               struct lttng_trace_chunk *source_chunk);
+
 LTTNG_HIDDEN
 enum lttng_trace_chunk_status lttng_trace_chunk_get_id(
                struct lttng_trace_chunk *chunk, uint64_t *id);
@@ -102,7 +114,10 @@ enum lttng_trace_chunk_status lttng_trace_chunk_set_close_timestamp(
 LTTNG_HIDDEN
 enum lttng_trace_chunk_status lttng_trace_chunk_get_name(
                struct lttng_trace_chunk *chunk, const char **name,
-               bool *name_overriden);
+               bool *name_overridden);
+
+LTTNG_HIDDEN
+bool lttng_trace_chunk_get_name_overridden(struct lttng_trace_chunk *chunk);
 
 LTTNG_HIDDEN
 enum lttng_trace_chunk_status lttng_trace_chunk_override_name(
@@ -122,20 +137,18 @@ LTTNG_HIDDEN
 enum lttng_trace_chunk_status lttng_trace_chunk_set_credentials_current_user(
                struct lttng_trace_chunk *chunk);
 
-/* session_output_directory ownership is transferred to the chunk on success. */
 LTTNG_HIDDEN
 enum lttng_trace_chunk_status lttng_trace_chunk_set_as_owner(
                struct lttng_trace_chunk *chunk,
                struct lttng_directory_handle *session_output_directory);
 
-/* chunk_output_directory ownership is transferred to the chunk on success. */
 LTTNG_HIDDEN
 enum lttng_trace_chunk_status lttng_trace_chunk_set_as_user(
                struct lttng_trace_chunk *chunk,
                struct lttng_directory_handle *chunk_directory);
 
 LTTNG_HIDDEN
-enum lttng_trace_chunk_status lttng_trace_chunk_get_chunk_directory_handle(
+enum lttng_trace_chunk_status lttng_trace_chunk_borrow_chunk_directory_handle(
                struct lttng_trace_chunk *chunk,
                const struct lttng_directory_handle **handle);
 
@@ -147,7 +160,7 @@ enum lttng_trace_chunk_status lttng_trace_chunk_create_subdirectory(
 LTTNG_HIDDEN
 enum lttng_trace_chunk_status lttng_trace_chunk_open_file(
                struct lttng_trace_chunk *chunk, const char *filename,
-               int flags, mode_t mode, int *out_fd);
+               int flags, mode_t mode, int *out_fd, bool expect_no_file);
 
 LTTNG_HIDDEN
 int lttng_trace_chunk_unlink_file(struct lttng_trace_chunk *chunk,