glibc/dlfcn/dlclose.c
Florian Weimer 466c1ea15f dlfcn: Rework static dlopen hooks
Consolidate all hooks structures into a single one.  There are
no static dlopen ABI concerns because glibc 2.34 already comes
with substantial ABI-incompatible changes in this area.  (Static
dlopen requires the exact same dynamic glibc version that was used
for static linking.)

The new approach uses a pointer to the hooks structure into
_rtld_global_ro and initalizes it in __rtld_static_init.  This avoids
a back-and-forth with various callback functions.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2021-06-03 09:12:05 +02:00

38 lines
1.2 KiB
C

/* Close a handle opened by `dlopen'.
Copyright (C) 1995-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <dlfcn.h>
#include <ldsodefs.h>
#include <shlib-compat.h>
int
__dlclose (void *handle)
{
#ifdef SHARED
if (!rtld_active ())
return GLRO (dl_dlfcn_hook)->dlclose (handle);
#endif
return _dlerror_run (GLRO (dl_close), handle) ? -1 : 0;
}
versioned_symbol (libc, __dlclose, dlclose, GLIBC_2_34);
#if OTHER_SHLIB_COMPAT (libdl, GLIBC_2_0, GLIBC_2_34)
compat_symbol (libdl, __dlclose, dlclose, GLIBC_2_0);
#endif