[sr-dev] git:master:efdc141e: tls: add preloaded library to force process-shared locks

Module: kamailio Branch: master Commit: efdc141ecb5ff72e3224e47deaaa79fe02576dd2 URL: https://github.com/kamailio/kamailio/commit/efdc141ecb5ff72e3224e47deaaa79f… Author: Richard Fuchs &lt;rfuchs(a)sipwise.com&gt; Committer: Richard Fuchs &lt;rfuchs(a)sipwise.com&gt; Date: 2019-04-11T14:29:48-04:00 tls: add preloaded library to force process-shared locks This is a hacky workaround for OpenSSL >= 1.1 which uses internal locking and doesn't support locks in memory shared across multiple processes. --- Added: src/modules/tls/utils/openssl_mutex_shared/Makefile Added: src/modules/tls/utils/openssl_mutex_shared/openssl_mutex_shared.c Modified: src/modules/tls/Makefile --- Diff: https://github.com/kamailio/kamailio/commit/efdc141ecb5ff72e3224e47deaaa79f… Patch: https://github.com/kamailio/kamailio/commit/efdc141ecb5ff72e3224e47deaaa79f… --- diff --git a/src/modules/tls/Makefile b/src/modules/tls/Makefile index b17a305073..1505bc64ea 100644 --- a/src/modules/tls/Makefile +++ b/src/modules/tls/Makefile @@ -33,6 +33,8 @@ LIBS+= $(TLS_EXTRA_LIBS) # dcm: tls.cfg installed via local 'install-cfg' to update paths #MOD_INSTALL_CFGS=tls.cfg +MOD_INSTALL_UTILS=utils/openssl_mutex_shared + include ../../Makefile.modules install-tls-cert: $(cfg_prefix)/$(cfg_dir) diff --git a/src/modules/tls/utils/openssl_mutex_shared/Makefile b/src/modules/tls/utils/openssl_mutex_shared/Makefile new file mode 100644 index 0000000000..8edfe13a60 --- /dev/null +++ b/src/modules/tls/utils/openssl_mutex_shared/Makefile @@ -0,0 +1,26 @@ +COREPATH=../../../../../src +include $(COREPATH)/Makefile.defs +include $(COREPATH)/Makefile.targets + + +.PHONY: all +all: openssl_mutex_shared.so + +.PHONY: install-if-newer +install-if-newer: install + +.PHONY: install +install: install-modules + +.PHONY: install-modules +install-modules: openssl_mutex_shared.so + mkdir -p $(modules_prefix)/$(lib_dir)/openssl_mutex_shared + $(INSTALL_TOUCH) $(modules_prefix)/$(lib_dir)/openssl_mutex_shared/openssl_mutex_shared.so + $(INSTALL_BIN) openssl_mutex_shared.so $(modules_prefix)/$(lib_dir)/openssl_mutex_shared + +openssl_mutex_shared.so: openssl_mutex_shared.c + $(CC) -g -D_GNU_SOURCE -std=c99 -fvisibility=hidden -pthread -o $@ -O3 -Wall -shared -fPIC -ldl $< + +.PHONY: clean +clean: + rm -f openssl_mutex_shared.so diff --git a/src/modules/tls/utils/openssl_mutex_shared/openssl_mutex_shared.c b/src/modules/tls/utils/openssl_mutex_shared/openssl_mutex_shared.c new file mode 100644 index 0000000000..00c9c8056e --- /dev/null +++ b/src/modules/tls/utils/openssl_mutex_shared/openssl_mutex_shared.c @@ -0,0 +1,46 @@ +#include <pthread.h> +#include <dlfcn.h> + +#define SYMBOL_EXPORT __attribute__((visibility("default"))) + +int SYMBOL_EXPORT pthread_mutex_init (pthread_mutex_t *__mutex, const pthread_mutexattr_t *__mutexattr) +{ + static int (*real_pthread_mutex_init)(pthread_mutex_t *__mutex, const pthread_mutexattr_t *__mutexattr); + if (!real_pthread_mutex_init) + real_pthread_mutex_init = dlsym(RTLD_NEXT, "pthread_mutex_init"); + + if (__mutexattr) { + pthread_mutexattr_t attr = *__mutexattr; + pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED); + return real_pthread_mutex_init(__mutex, &attr); + } + + pthread_mutexattr_t attr; + pthread_mutexattr_init(&attr); + pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED); + int ret = real_pthread_mutex_init(__mutex, &attr); + pthread_mutexattr_destroy(&attr); + return ret; +} + +int SYMBOL_EXPORT pthread_rwlock_init (pthread_rwlock_t *__restrict __rwlock, + const pthread_rwlockattr_t *__restrict __attr) +{ + static int (*real_pthread_rwlock_init)(pthread_rwlock_t *__restrict __rwlock, + const pthread_rwlockattr_t *__restrict __attr); + if (!real_pthread_rwlock_init) + real_pthread_rwlock_init = dlsym(RTLD_NEXT, "pthread_rwlock_init"); + + if (__attr) { + pthread_rwlockattr_t attr = *__attr; + pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_SHARED); + return real_pthread_rwlock_init(__rwlock, &attr); + } + + pthread_rwlockattr_t attr; + pthread_rwlockattr_init(&attr); + pthread_rwlockattr_setpshared(&attr, PTHREAD_PROCESS_SHARED); + int ret = real_pthread_rwlock_init(__rwlock, &attr); + pthread_rwlockattr_destroy(&attr); + return ret; +}