commit 7dbf66713f22b5e04a36d300307a4df7e375e76b Author: Nick Mathewson nickm@torproject.org Date: Thu Sep 19 12:22:49 2013 -0400
When freeing a cert_list_t, avoid memory leak.
We were freeing these on exit, but when we added the dl_status_map field to them in fddb814f, we forgot to arrange for it to be freed.
I've moved the cert_list_free() code into its own function, and added an appropriate dsmap_free() call.
Fixes bug 9644; bugfix on 0.2.4.13-alpha. --- changes/bug9644 | 4 ++++ src/or/routerlist.c | 29 ++++++++++++++++++++++------- 2 files changed, 26 insertions(+), 7 deletions(-)
diff --git a/changes/bug9644 b/changes/bug9644 new file mode 100644 index 0000000..51c58a5 --- /dev/null +++ b/changes/bug9644 @@ -0,0 +1,4 @@ + o Minor bugfixes: + - Fix a small memory leak on exit. (We weren't freeing directory + authority certificate download statuses.) Fixes bug 9644; bugfix + on 0.2.4.13-alpha. diff --git a/src/or/routerlist.c b/src/or/routerlist.c index c2220f4..c28de24 100644 --- a/src/or/routerlist.c +++ b/src/or/routerlist.c @@ -241,6 +241,27 @@ get_cert_list(const char *id_digest) return cl; }
+/** Release all space held by a cert_list_t */ +static void +cert_list_free(cert_list_t *cl) +{ + if (!cl) + return; + + SMARTLIST_FOREACH(cl->certs, authority_cert_t *, cert, + authority_cert_free(cert)); + smartlist_free(cl->certs); + dsmap_free(cl->dl_status_map, tor_free_); + tor_free(cl); +} + +/** Wrapper for cert_list_free so we can pass it to digestmap_free */ +static void +cert_list_free_(void *cl) +{ + cert_list_free(cl); +} + /** Reload the cached v3 key certificates from the cached-certs file in * the data directory. Return 0 on success, -1 on failure. */ int @@ -3324,13 +3345,7 @@ routerlist_free_all(void) smartlist_free(fallback_dir_servers); trusted_dir_servers = fallback_dir_servers = NULL; if (trusted_dir_certs) { - DIGESTMAP_FOREACH(trusted_dir_certs, key, cert_list_t *, cl) { - SMARTLIST_FOREACH(cl->certs, authority_cert_t *, cert, - authority_cert_free(cert)); - smartlist_free(cl->certs); - tor_free(cl); - } DIGESTMAP_FOREACH_END; - digestmap_free(trusted_dir_certs, NULL); + digestmap_free(trusted_dir_certs, cert_list_free_); trusted_dir_certs = NULL; } }