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platform_bionic/linker/linker.arm.map

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Replace artificial symbol table with proper one This change also replaces elf-hash with gnu-hash. Test: make Test: bionic-unit-tests --gtest_filter=dl*:Dl* Change-Id: Ibc4026f7abc7e8002f69c33eebaf6a193f1d22eb
2017-08-29 18:14:49 +02:00
{
global:
__loader_dlopen;
__loader_dlclose;
__loader_dlsym;
__loader_dlerror;
__loader_dladdr;
__loader_android_update_LD_LIBRARY_PATH;
__loader_android_get_LD_LIBRARY_PATH;
__loader_dl_iterate_phdr;
__loader_android_dlopen_ext;
__loader_android_set_application_target_sdk_version;
__loader_android_get_application_target_sdk_version;
__loader_android_init_anonymous_namespace;
__loader_android_create_namespace;
__loader_dlvsym;
__loader_android_dlwarning;
__loader_cfi_fail;
__loader_android_link_namespaces;
linker: Allow link namespaces without name filters This commit allows users to create a link without soname filters between two linker namespaces. The motivation is to establish one-way shared library isolation. For example, assume that there are two linker namespaces `default` and `vndk`. We would like to limit the shared libraries that can be used by the `default` namespace. In the meanwhile, we would like to allow the `vndk` namespace to use shared libs from the `default` namespace if the soname cannot be find in the search path or loaded sonames of the `vndk` namespace. shared_libs = %VNDK_CORE_LIBRARIES% shared_libs += %VNDK_SAMEPROCESS_LIBRARIES% vndk <-------------------------------------------- default \_______________________________________________/^ allow_all_shared_libs = true android_link_namespaces_all_libs() is added to libdl, but it is versioned as LIBC_PRIVATE. android_link_namespaces_all_libs() is only for unit tests. Bug: 69824336 Test: adb shell /data/nativetest/linker-unit-tests/linker-unit-tests32 Test: adb shell /data/nativetest64/linker-unit-tests/linker-unit-tests64 Test: adb shell /data/nativetest/bionic-unit-tests/bionic-unit-tests Test: adb shell /data/nativetest64/bionic-unit-tests/bionic-unit-tests Test: Update /system/etc/ld.config*.txt and check whether the vndk linker namespace of the vendor process can access the shared libs from the default linker namespace. Change-Id: I2879f0c5f5af60c7e56f8f743ebd2872e552286b
2018-01-18 05:05:09 +01:00
__loader_android_link_namespaces_all_libs;
Replace artificial symbol table with proper one This change also replaces elf-hash with gnu-hash. Test: make Test: bionic-unit-tests --gtest_filter=dl*:Dl* Change-Id: Ibc4026f7abc7e8002f69c33eebaf6a193f1d22eb
2017-08-29 18:14:49 +02:00
__loader_android_get_exported_namespace;
__loader_dl_unwind_find_exidx;
Fix dlclose for libraries with thread_local dtors Introduce new flag to mark soinfo as TLS_NODELETE when there are thread_local dtors associated with dso_handle belonging to it. Test: bionic-unit-tests --gtest_filter=dl* Test: bionic-unit-tests-glibc --gtest_filter=dl* Bug: https://github.com/android-ndk/ndk/issues/360 Change-Id: I724ef89fc899788f95c47e6372c38b3313f18fed
2018-01-05 11:39:28 +01:00
__loader_add_thread_local_dtor;
__loader_remove_thread_local_dtor;
Expose libc_shared_globals to libc.so with symbol Previously, the address of the global variable was communicated from the dynamic linker to libc.so using a field of KernelArgumentBlock, which is communicated using the TLS_SLOT_BIONIC_PREINIT slot. As long as this function isn't called during relocations (i.e. while executing an ifunc), it always return a non-NULL value. If it's called before its PLT entry is relocated, I expect a crash. I removed the __libc_init_shared_globals function. It's currently empty, and I don't think there's one point in libc's initialization where shared globals should be initialized. Bug: http://b/25751302 Test: bionic unit tests Change-Id: I614d25e7ef5e0d2ccc40d5c821dee10f1ec61c2e
2018-11-22 11:40:17 +01:00
__loader_shared_globals;
Replace artificial symbol table with proper one This change also replaces elf-hash with gnu-hash. Test: make Test: bionic-unit-tests --gtest_filter=dl*:Dl* Change-Id: Ibc4026f7abc7e8002f69c33eebaf6a193f1d22eb
2017-08-29 18:14:49 +02:00
rtld_db_dlactivity;
Add the recoverable GWP-ASan feature. GWP-ASan's recoverable mode was landed upstream in https://reviews.llvm.org/D140173. This mode allows for a use-after-free or a buffer-overflow bug to be detected by GWP-ASan, a crash report dumped, but then GWP-ASan (through the preCrashReport() and postCrashReportRecoverableOnly() hooks) will patch up the memory so that the process can continue, in spite of the memory safety bug. This is desirable, as it allows us to consider migrating non-system apps from opt-in GWP-ASan to opt-out GWP-ASan. The major concern was "if we make it opt-out, then bad apps will start crashing". If we don't crash, problem solved :). Obviously, we'll need to do this with an amount of process sampling to mitigate against the 70KiB memory overhead. The biggest problem is that the debuggerd signal handler isn't the first signal handler for apps, it's the sigchain handler inside of libart. Clearly, the sigchain handler needs to ask us whether the crash is GWP-ASan's fault, and if so, please patch up the allocator. Because of linker namespace restrictions, libart can't directly ask the linker (which is where debuggerd lies), so we provide a proxy function in libc. Test: Build the platform, run sanitizer-status and various test apps with recoverable gwp-asan. Assert that it doesn't crash, and we get a debuggerd report. Bug: 247012630 Change-Id: I86d5e27a9ca5531c8942e62647fd377c3cd36dfd
2023-01-19 21:47:22 +01:00
__loader_android_handle_signal;
Replace artificial symbol table with proper one This change also replaces elf-hash with gnu-hash. Test: make Test: bionic-unit-tests --gtest_filter=dl*:Dl* Change-Id: Ibc4026f7abc7e8002f69c33eebaf6a193f1d22eb
2017-08-29 18:14:49 +02:00
local:
*;
};
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