From b75d82b42a52faa66a6c00d46bf0de6391c95db4 Mon Sep 17 00:00:00 2001 From: Jesse Hall Date: Mon, 9 Jan 2017 16:04:28 -0800 Subject: Make dlext_namespaces.h available to users of libnativeloader Bug: 33531483 Test: build Change-Id: I1da92e2b1437b6775a9d81fc6c1a2d4bacecbc04 (cherry picked from commit 0936d25371e4f2618bf5760583a60dd542740542) --- libnativeloader/dlext_namespaces.h | 91 ---------------------- .../include/nativeloader/dlext_namespaces.h | 91 ++++++++++++++++++++++ libnativeloader/native_loader.cpp | 2 +- 3 files changed, 92 insertions(+), 92 deletions(-) delete mode 100644 libnativeloader/dlext_namespaces.h create mode 100644 libnativeloader/include/nativeloader/dlext_namespaces.h diff --git a/libnativeloader/dlext_namespaces.h b/libnativeloader/dlext_namespaces.h deleted file mode 100644 index 13a44e2bf..000000000 --- a/libnativeloader/dlext_namespaces.h +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright (C) 2016 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef __ANDROID_DLEXT_NAMESPACES_H__ -#define __ANDROID_DLEXT_NAMESPACES_H__ - -#include - -__BEGIN_DECLS - -/* - * Initializes public and anonymous namespaces. The public_ns_sonames is the list of sonames - * to be included into public namespace separated by colon. Example: "libc.so:libm.so:libdl.so". - * The libraries in this list should be loaded prior to this call. - * - * The anon_ns_library_path is the search path for anonymous namespace. The anonymous namespace - * is used in the case when linker cannot identify the caller of dlopen/dlsym. This happens - * for the code not loaded by dynamic linker; for example calls from the mono-compiled code. - */ -extern bool android_init_namespaces(const char* public_ns_sonames, - const char* anon_ns_library_path); - - -enum { - /* A regular namespace is the namespace with a custom search path that does - * not impose any restrictions on the location of native libraries. - */ - ANDROID_NAMESPACE_TYPE_REGULAR = 0, - - /* An isolated namespace requires all the libraries to be on the search path - * or under permitted_when_isolated_path. The search path is the union of - * ld_library_path and default_library_path. - */ - ANDROID_NAMESPACE_TYPE_ISOLATED = 1, - - /* The shared namespace clones the list of libraries of the caller namespace upon creation - * which means that they are shared between namespaces - the caller namespace and the new one - * will use the same copy of a library if it was loaded prior to android_create_namespace call. - * - * Note that libraries loaded after the namespace is created will not be shared. - * - * Shared namespaces can be isolated or regular. Note that they do not inherit the search path nor - * permitted_path from the caller's namespace. - */ - ANDROID_NAMESPACE_TYPE_SHARED = 2, - ANDROID_NAMESPACE_TYPE_SHARED_ISOLATED = ANDROID_NAMESPACE_TYPE_SHARED | - ANDROID_NAMESPACE_TYPE_ISOLATED, -}; - -/* - * Creates new linker namespace. - * ld_library_path and default_library_path represent the search path - * for the libraries in the namespace. - * - * The libraries in the namespace are searched by folowing order: - * 1. ld_library_path (Think of this as namespace-local LD_LIBRARY_PATH) - * 2. In directories specified by DT_RUNPATH of the "needed by" binary. - * 3. deault_library_path (This of this as namespace-local default library path) - * - * When type is ANDROID_NAMESPACE_TYPE_ISOLATED the resulting namespace requires all of - * the libraries to be on the search path or under the permitted_when_isolated_path; - * the search_path is ld_library_path:default_library_path. Note that the - * permitted_when_isolated_path path is not part of the search_path and - * does not affect the search order. It is a way to allow loading libraries from specific - * locations when using absolute path. - * If a library or any of its dependencies are outside of the permitted_when_isolated_path - * and search_path, and it is not part of the public namespace dlopen will fail. - */ -extern struct android_namespace_t* android_create_namespace(const char* name, - const char* ld_library_path, - const char* default_library_path, - uint64_t type, - const char* permitted_when_isolated_path, - android_namespace_t* parent); - -__END_DECLS - -#endif /* __ANDROID_DLEXT_NAMESPACES_H__ */ diff --git a/libnativeloader/include/nativeloader/dlext_namespaces.h b/libnativeloader/include/nativeloader/dlext_namespaces.h new file mode 100644 index 000000000..13a44e2bf --- /dev/null +++ b/libnativeloader/include/nativeloader/dlext_namespaces.h @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2016 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __ANDROID_DLEXT_NAMESPACES_H__ +#define __ANDROID_DLEXT_NAMESPACES_H__ + +#include + +__BEGIN_DECLS + +/* + * Initializes public and anonymous namespaces. The public_ns_sonames is the list of sonames + * to be included into public namespace separated by colon. Example: "libc.so:libm.so:libdl.so". + * The libraries in this list should be loaded prior to this call. + * + * The anon_ns_library_path is the search path for anonymous namespace. The anonymous namespace + * is used in the case when linker cannot identify the caller of dlopen/dlsym. This happens + * for the code not loaded by dynamic linker; for example calls from the mono-compiled code. + */ +extern bool android_init_namespaces(const char* public_ns_sonames, + const char* anon_ns_library_path); + + +enum { + /* A regular namespace is the namespace with a custom search path that does + * not impose any restrictions on the location of native libraries. + */ + ANDROID_NAMESPACE_TYPE_REGULAR = 0, + + /* An isolated namespace requires all the libraries to be on the search path + * or under permitted_when_isolated_path. The search path is the union of + * ld_library_path and default_library_path. + */ + ANDROID_NAMESPACE_TYPE_ISOLATED = 1, + + /* The shared namespace clones the list of libraries of the caller namespace upon creation + * which means that they are shared between namespaces - the caller namespace and the new one + * will use the same copy of a library if it was loaded prior to android_create_namespace call. + * + * Note that libraries loaded after the namespace is created will not be shared. + * + * Shared namespaces can be isolated or regular. Note that they do not inherit the search path nor + * permitted_path from the caller's namespace. + */ + ANDROID_NAMESPACE_TYPE_SHARED = 2, + ANDROID_NAMESPACE_TYPE_SHARED_ISOLATED = ANDROID_NAMESPACE_TYPE_SHARED | + ANDROID_NAMESPACE_TYPE_ISOLATED, +}; + +/* + * Creates new linker namespace. + * ld_library_path and default_library_path represent the search path + * for the libraries in the namespace. + * + * The libraries in the namespace are searched by folowing order: + * 1. ld_library_path (Think of this as namespace-local LD_LIBRARY_PATH) + * 2. In directories specified by DT_RUNPATH of the "needed by" binary. + * 3. deault_library_path (This of this as namespace-local default library path) + * + * When type is ANDROID_NAMESPACE_TYPE_ISOLATED the resulting namespace requires all of + * the libraries to be on the search path or under the permitted_when_isolated_path; + * the search_path is ld_library_path:default_library_path. Note that the + * permitted_when_isolated_path path is not part of the search_path and + * does not affect the search order. It is a way to allow loading libraries from specific + * locations when using absolute path. + * If a library or any of its dependencies are outside of the permitted_when_isolated_path + * and search_path, and it is not part of the public namespace dlopen will fail. + */ +extern struct android_namespace_t* android_create_namespace(const char* name, + const char* ld_library_path, + const char* default_library_path, + uint64_t type, + const char* permitted_when_isolated_path, + android_namespace_t* parent); + +__END_DECLS + +#endif /* __ANDROID_DLEXT_NAMESPACES_H__ */ diff --git a/libnativeloader/native_loader.cpp b/libnativeloader/native_loader.cpp index 94c46fc19..d7b5cb566 100644 --- a/libnativeloader/native_loader.cpp +++ b/libnativeloader/native_loader.cpp @@ -20,7 +20,7 @@ #include #ifdef __ANDROID__ #define LOG_TAG "libnativeloader" -#include "dlext_namespaces.h" +#include "nativeloader/dlext_namespaces.h" #include "cutils/properties.h" #include "log/log.h" #endif -- cgit v1.2.3