Turn "compress" into a subsystem.

1 files changed, 14 insertions, 1 deletions

diff --git a/src/lib/compress/compress.c b/src/lib/compress/compress.c
index 2ad9b15b2e..0d134fd1be 100644
--- a/src/lib/compress/compress.c
+++ b/src/lib/compress/compress.c
@@ -29,10 +29,12 @@
 #include "lib/compress/compress.h"
 #include "lib/compress/compress_lzma.h"
 #include "lib/compress/compress_none.h"
+#include "lib/compress/compress_sys.h"
 #include "lib/compress/compress_zlib.h"
 #include "lib/compress/compress_zstd.h"
 #include "lib/intmath/cmp.h"
 #include "lib/malloc/malloc.h"
+#include "lib/subsys/subsys.h"
 #include "lib/thread/threads.h"
 
 /** Total number of bytes allocated for compression state overhead. */
@@ -660,7 +662,7 @@ tor_compress_state_size(const tor_compress_state_t *state)
 }
 
 /** Initialize all compression modules. */
-void
+int
 tor_compress_init(void)
 {
   atomic_counter_init(&total_compress_allocation);
@@ -668,6 +670,8 @@ tor_compress_init(void)
   tor_zlib_init();
   tor_lzma_init();
   tor_zstd_init();
+
+  return 0;
 }
 
 /** Warn if we had any problems while setting up our compression libraries.
@@ -677,5 +681,14 @@ tor_compress_init(void)
 void
 tor_compress_log_init_warnings(void)
 {
+  // XXXX can we move this into tor_compress_init() after all?  log.c queues
+  // XXXX log messages at startup.
   tor_zstd_warn_if_version_mismatched();
 }
+
+const subsys_fns_t sys_compress = {
+  .name = "compress",
+  .supported = true,
+  .level = -70,
+  .initialize = tor_compress_init,
+};