diff options
| author | Kevin P. Fleming <kpfleming@digium.com> | 2006-08-26 19:45:16 +0000 |
|---|---|---|
| committer | Kevin P. Fleming <kpfleming@digium.com> | 2006-08-26 19:45:16 +0000 |
| commit | a757ca294799f7e014b3dd7083943ac7e1630614 (patch) | |
| tree | fa90bdc618e9f11a4c305bbcb5ce66a9c7e0352b /main/loader.c | |
| parent | 3a83fbed5b81816a813782c083a464abf9348bcc (diff) | |
ensure that unload_dynamic_module won't continue dereferencing a module pointer after the module has been unloaded from memory
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@41196 65c4cc65-6c06-0410-ace0-fbb531ad65f3
Diffstat (limited to 'main/loader.c')
| -rw-r--r-- | main/loader.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/main/loader.c b/main/loader.c index 4ece4ae6b..30f5aa660 100644 --- a/main/loader.c +++ b/main/loader.c @@ -323,9 +323,14 @@ static struct ast_module *find_resource(const char *resource, int do_lock) #if LOADABLE_MODULES static void unload_dynamic_module(struct ast_module *mod) { - if (mod->lib) - while (!dlclose(mod->lib)); - /* WARNING: the structure pointed to by mod is now gone! */ + void *lib = mod->lib; + + /* WARNING: the structure pointed to by mod is going to + disappear when this operation succeeds, so we can't + dereference it */ + + if (lib) + while (!dlclose(lib)); } static struct ast_module *load_dynamic_module(const char *resource_in, unsigned int global_symbols_only) |