diff options
Diffstat (limited to 'dlfcn')
| -rw-r--r-- | dlfcn/Makefile | 2 | ||||
| -rw-r--r-- | dlfcn/Versions | 1 | ||||
| -rw-r--r-- | dlfcn/dlerror.c | 14 | ||||
| -rw-r--r-- | dlfcn/dlfreeres.c | 29 | ||||
| -rw-r--r-- | dlfcn/sdlfreeres.c | 1 |
5 files changed, 46 insertions, 1 deletions
diff --git a/dlfcn/Makefile b/dlfcn/Makefile index 56dcae0604..34f9923334 100644 --- a/dlfcn/Makefile +++ b/dlfcn/Makefile @@ -22,7 +22,7 @@ include ../Makeconfig headers := bits/dlfcn.h dlfcn.h extra-libs := libdl libdl-routines := dlopen dlclose dlsym dlvsym dlerror dladdr dladdr1 dlinfo \ - dlmopen dlfcn + dlmopen dlfcn dlfreeres routines := $(patsubst %,s%,$(filter-out dlfcn,$(libdl-routines))) elide-routines.os := $(routines) diff --git a/dlfcn/Versions b/dlfcn/Versions index 97902f0dfd..1df6925a92 100644 --- a/dlfcn/Versions +++ b/dlfcn/Versions @@ -13,5 +13,6 @@ libdl { } GLIBC_PRIVATE { _dlfcn_hook; + __libdl_freeres; } } diff --git a/dlfcn/dlerror.c b/dlfcn/dlerror.c index 04dce9ddc6..33574faab6 100644 --- a/dlfcn/dlerror.c +++ b/dlfcn/dlerror.c @@ -24,6 +24,7 @@ #include <string.h> #include <libc-lock.h> #include <ldsodefs.h> +#include <libc-symbols.h> #if !defined SHARED && IS_IN (libdl) @@ -222,6 +223,19 @@ free_key_mem (void *mem) # ifdef SHARED +/* Free the dlerror-related resources. */ +void +__dlerror_main_freeres (void) +{ + void *mem; + /* Free the global memory if used. */ + check_free (&last_result); + /* Free the TSD memory if used. */ + mem = __libc_getspecific (key); + if (mem != NULL) + free_key_mem (mem); +} + struct dlfcn_hook *_dlfcn_hook __attribute__((nocommon)); libdl_hidden_data_def (_dlfcn_hook) diff --git a/dlfcn/dlfreeres.c b/dlfcn/dlfreeres.c new file mode 100644 index 0000000000..4004db0edb --- /dev/null +++ b/dlfcn/dlfreeres.c @@ -0,0 +1,29 @@ +/* Clean up allocated libdl memory on demand. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <set-hooks.h> +#include <libc-symbols.h> +#include <dlfcn.h> + +/* Free libdl.so resources. + Note: Caller ensures we are called only once. */ +void +__libdl_freeres (void) +{ + call_function_static_weak (__dlerror_main_freeres); +} diff --git a/dlfcn/sdlfreeres.c b/dlfcn/sdlfreeres.c new file mode 100644 index 0000000000..7347672990 --- /dev/null +++ b/dlfcn/sdlfreeres.c @@ -0,0 +1 @@ +#include "dlfreeres.c" |