diff options
| author |   kurt <kurt@openbsd.org> | 2005-10-03 20:17:26 +0000 |
|---|---|---|
| committer | kurt <kurt@openbsd.org> | 2005-10-03 20:17:26 +0000 |
| commit | eefddc0cf0c306efcf74e452e8d4adc159e724de (patch) | |
| tree | d5858ecd333c0eba5fc5477df3f0da67231da106 | |
| parent | refcount corrections: count common dep libs once and centralize dep lib (diff) | |
| download | wireguard-openbsd-eefddc0cf0c306efcf74e452e8d4adc159e724de.tar.xz wireguard-openbsd-eefddc0cf0c306efcf74e452e8d4adc159e724de.zip | |
protect against errant programs that attempt to dlclose a handle that is
already closed (but still around due to refs).
| -rw-r--r-- | libexec/ld.so/dlfcn.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libexec/ld.so/dlfcn.c b/libexec/ld.so/dlfcn.c index 1e153e840df..6d63203fba8 100644 --- a/libexec/ld.so/dlfcn.c +++ b/libexec/ld.so/dlfcn.c @@ -1,4 +1,4 @@ -/* $OpenBSD: dlfcn.c,v 1.59 2005/10/03 19:48:24 kurt Exp $ */ +/* $OpenBSD: dlfcn.c,v 1.60 2005/10/03 20:17:26 kurt Exp $ */ /* * Copyright (c) 1998 Per Fogelstrom, Opsycon AB @@ -277,6 +277,12 @@ _dl_real_close(void *handle) elf_object_t *dynobj; object = (elf_object_t *)handle; + + if (object->opencount == 0) { + _dl_errno = DL_INVALID_HANDLE; + return (1); + } + dynobj = _dl_objects; while (dynobj && dynobj != object) dynobj = dynobj->next; |