libc-wrappers: Added wrappers for pthread_attr_getstacksize, pthread_…

…create and pthread_detach. Fixes containers#821

src/go-build-wrapper

@@ -15,6 +15,8 @@
 # limitations under the License.
 #
 
+readonly WRAPPED_FUNCTIONS="--wrap,pthread_attr_getstacksize,--wrap,pthread_create,--wrap,pthread_detach,--wrap,pthread_sigmask"
+
 
 if [ "$#" -ne 4 ]; then
     echo "go-build-wrapper: wrong arguments" >&2
@@ -27,5 +29,5 @@ if ! cd "$1"; then
     exit 1
 fi
 
-go build -trimpath -ldflags "-extldflags '-Wl,--wrap,pthread_sigmask $4' -linkmode external -X github.com/containers/toolbox/pkg/version.currentVersion=$3" -o "$2/toolbox"
+go build -trimpath -ldflags "-extldflags '-Wl,$WRAPPED_FUNCTIONS $4' -linkmode external -X github.com/containers/toolbox/pkg/version.currentVersion=$3" -o "$2/toolbox"
 exit "$?"

src/libc-wrappers/libc-wrappers.c

@@ -16,8 +16,95 @@
 
 
 #include <signal.h>
+#include <pthread.h>
 
 
+/*
+  pthread_attr_getstacksize wrapping
+ */
+#if defined __aarch64__
+__asm__(".symver pthread_attr_getstacksize,pthread_attr_getstacksize@GLIBC_2.17");
+#elif defined __arm__
+__asm__(".symver pthread_attr_getstacksize,pthread_attr_getstacksize@GLIBC_2.4");
+#elif defined __i386__
+__asm__(".symver pthread_attr_getstacksize,pthread_attr_getstacksize@GLIBC_2.1");
+#elif defined __powerpc64__ && _CALL_ELF == 2 /* ppc64le */
+__asm__(".symver pthread_attr_getstacksize,pthread_attr_getstacksize@GLIBC_2.17");
+#elif defined __s390x__
+__asm__(".symver pthread_attr_getstacksize,pthread_attr_getstacksize@GLIBC_2.2");
+#elif defined __x86_64__
+__asm__(".symver pthread_attr_getstacksize,pthread_attr_getstacksize@GLIBC_2.2.5");
+#else
+#error "Please specify symbol version for pthread_attr_getstacksize"
+#endif
+
+
+int
+__wrap_pthread_attr_getstacksize (const pthread_attr_t *attr, size_t *stacksize)
+{
+  return pthread_attr_getstacksize (attr, stacksize);
+}
+
+
+/*
+ pthread_create wrapping
+ */
+#if defined __aarch64__
+__asm__(".symver pthread_create,pthread_create@GLIBC_2.17");
+#elif defined __arm__
+__asm__(".symver pthread_create,pthread_create@GLIBC_2.4");
+#elif defined __i386__
+__asm__(".symver pthread_create,pthread_create@GLIBC_2.0");
+#elif defined __powerpc64__ && _CALL_ELF == 2 /* ppc64le */
+__asm__(".symver pthread_create,pthread_create@GLIBC_2.17");
+#elif defined __s390x__
+__asm__(".symver pthread_create,pthread_create@GLIBC_2.2");
+#elif defined __x86_64__
+__asm__(".symver pthread_create,pthread_create@GLIBC_2.2.5");
+#else
+#error "Please specify symbol version for pthread_create"
+#endif
+
+
+int
+__wrap_pthread_create (pthread_t *newthread, const pthread_attr_t *attr,
+                       void *(*start_routine) (void *), void *arg)
+{
+  return pthread_create(newthread, attr, start_routine, arg);
+}
+
+
+/*
+ pthread_detach wrapping
+ */
+#if defined __aarch64__
+__asm__(".symver pthread_detach,pthread_detach@GLIBC_2.17");
+#elif defined __arm__
+__asm__(".symver pthread_detach,pthread_detach@GLIBC_2.4");
+#elif defined __i386__
+__asm__(".symver pthread_detach,pthread_detach@GLIBC_2.0");
+#elif defined __powerpc64__ && _CALL_ELF == 2 /* ppc64le */
+__asm__(".symver pthread_detach,pthread_detach@GLIBC_2.17");
+#elif defined __s390x__
+__asm__(".symver pthread_detach,pthread_detach@GLIBC_2.2");
+#elif defined __x86_64__
+__asm__(".symver pthread_detach,pthread_detach@GLIBC_2.2.5");
+#else
+#error "Please specify symbol version for pthread_detach"
+#endif
+
+
+int
+__wrap_pthread_detach (pthread_t th)
+{
+  return pthread_detach (th);
+}
+
+
+/* 
+ pthread_sigmask wrapping
+ */
+
 #if defined __aarch64__
 __asm__(".symver pthread_sigmask,pthread_sigmask@GLIBC_2.17");
 #elif defined __arm__