shaba/systemd-stable
1
1
Fork 0
mirror of https://github.com/systemd/systemd-stable.git synced 2025-01-20 14:03:39 +03:00
Code

dlfcn: add new safe_dclose() helper

Browse Source 
Let's allow destructing loaded module handles in our usual way that is
fine with NULL handles, and also returns the NULL handle again.
This commit is contained in:
Lennart Poettering 2023-01-25 11:54:44 +01:00
parent 6ec7a722ba
commit f2592ef0e1
2 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/shared/dlfcn-util.h
View File

@ -24,3 +24,11 @@ int dlopen_many_sym_or_warn_sentinel(void **dlp, const char *filename, int log_l
/* libbpf is a bit confused about type-safety and API compatibility. Provide a macro that can tape over that mess. Sad. */
#define DLSYM_ARG_FORCE(arg) \
&sym_##arg, STRINGIFY(arg)
static inline void *safe_dlclose(void *p) {
if (!p)
return NULL;
assert_se(dlclose(p) == 0);
return NULL;
}

6
src/shared/tpm2-util.c
View File

@ -111,11 +111,7 @@ void tpm2_context_destroy(struct tpm2_context *c) {
sym_Esys_Finalize(&c->esys_context);
c->tcti_context = mfree(c->tcti_context);
if (c->tcti_dl) {
dlclose(c->tcti_dl);
c->tcti_dl = NULL;
}
c->tcti_dl = safe_dlclose(c->tcti_dl);
}
static inline void Esys_Finalize_wrapper(ESYS_CONTEXT **c) {