Roll our own version of zipalign so that we can break the dependency
on the build tools zipalign. This breaks the transitive dependency
on androidfw so that building bionic unit tests in brillo works again.
Also modify the DlExtTest.ExtInfoUseFdWithOffset test so it dynamically
gets the offset of the shared library inside of the zip instead of
hard-coding the value.
Bug: 25446938
Change-Id: Idfb5d3089960a94eefa2c76e03da1ad2f4d7fb2f
The anonymous namespace is introduced to
handle cases when linker can not find the
caller. This usually happens when caller
code was not loaded by dynamic linker;
for example mono-generated code.
Bug: http://b/25844435
Bug: http://b/22548808
Change-Id: I9e5b1d23c1c75bc78548d68e79216a6a943a33cf
This patch also fixes realpath for libraries opened directly
from apks.
Bug: http://b/21960914
Bug: http://b/21961857
Change-Id: I35ade661c87f1d448191f385811f6e9fd3cacf11
This change makes dynamic linker reuse ZipArchiveHandles in
ld_library_path on dlopen to optimize the lookup of dt_needed
libraries.
Bug: http://b/21960534
Change-Id: I65f897910d46dd2ffabdcb0b7842db2f127eee30
Pass -q to zip for dlext_testzip to avoid printing:
adding: empty_file.txt (stored 0%)
on every compile.
Bug: 24409581
Change-Id: I2320f31182a9a332b3ef8b32a22561092ab5aceb
Don't pass the parent load's dlextinfo to dependent loads, since this
causes the linker to try to load the dependencies using the same
addresses/relro/fds/etc as the main library, which is never going to
work. This was how it worked before ae69a95 which broke this.
Bug: http://b/23742664
Bug: http://b/20948231
Bug: http://b/20841817
Change-Id: I340ebae1127666d5c6c6f9c6521b89fb93f15bdd
This makes bionic-unit-test-glibc64 behave consistently
when testing dlopen from a library with dt_runpath.
Bug: http://b/21899363
Change-Id: I9d446eb6852876975874d6b7761f6f81cc4e9916
Answers the question: what if dependent library
was preloaded with RTLD_LOCAL flag.
Also add test for RTLD_NEXT within local_group.
Bug: http://b/17512583
Change-Id: I79e081e68b3a8c0ed8980d4275a06515fea94ec9
The visibility control in pthread_atfork.h is incorrect.
It breaks 64bit libc.so by hiding pthread_atfork.
This reverts commit 6df122f852.
Change-Id: I21e4b344d500c6f6de0ccb7420b916c4e233dd34
Add code to support loading shared libraries directly from within
APK files.
Extends the linker's handling of LD_LIBRARY_PATH, DT_RUNPATH, etc
to allow elements to be either directories as normal, or ZIP
format files. For ZIP, the ZIP subdirectory string is separated
from the path to file by '!'.
For example, if DT_NEEDED is libchrome.so and Chrome.apk is the
Android ARM APK then the path element
/system/app/Chrome.apk!lib/armeabi-v7a
would cause the linker to load lib/armeabi-v7a/libchrome.so
directly from inside Chrome.apk. For loading to succeed,
libchrome.so must be 'stored' and not compressed in Chrome.apk,
and must be page aligned within the file.
Motivation:
Chromium tracking issue:
https://code.google.com/p/chromium/issues/detail?id=390618
Bug: 8076853
Change-Id: Ic49046600b1417eae3ee8f37ee98c8ac1ecc19e7
Implement refcounter based data protection guard
to avoid unnecessary calls to mprotect when dlopen/dlclose
is called from a constructor.
Bug: 19124318
Big: 7941716
Change-Id: Id221b84ce75443094f99756dc9950b0a1dc87222
This one covers undefined weak reference in .so
referenced via JUMP_SLOT relocation.
Bug: 17526061
Change-Id: Ib8764bd30c1f686c4818ebbc6683cf42dee908b2
Count references on the group level to avoid
partially unloading function that might be
referenced by other libraries in the local_group
Bonus: with this change we can correctly unload recursively
linked libraries. is_recursive check is removed.
Also dynamic executables (not .so) with 0 DT_NEEDED libraries
are now correctly linked.
Change-Id: Idfa83baef402840599b93a875f2881d9f020dbcd
Relocate symbol against DF_1_GLOBAL shared libraries
loaded before this shared library. This includes
main executable, ld_preloads and other libraries
that have DF_1_GLOBAL flag set.
Bug: 2643900
Bug: 15432753
Change-Id: Ia788748be59b739d1c7e62b978e7e255f9e65c7b
The local group is a sequence of libraries in default (breadth-first)
order. It allows RTLD_LOCALLY loaded library to correctly relocate
symbols within its group (see test-cases).
Local group lookup is performed after main executable and ld_preloads.
Bug: 2643900
Bug: 15432753
Change-Id: I9bb013b46d17dbb5cbdfb8fef26f552748385541
Use $(BUILD_SYSTEM)/base_rules to build it as custom module, so that
it's exposed to utilities like mm/mmma etc.
Bug: 17887283
Change-Id: Idd7b62d08e4d56331a3ff15da6aa46eae8c41898
Symbols from libraries opened with RTLD_LOCAL (default)
should not be visible via dlsym(RLTD_DEFAULT/RTLD_NEXT, .)
Bug: 17512583
Change-Id: I1758943081a67cf3d49ba5808e061b8251a91964
Expanded test for recursive libs. Fixed bug with unnecessary
soinfo_free of already loaded library.
Change-Id: I2cc19f2650c8b12a35feeac127ef608ebba44d88
There are number of changes in the way IFUNC related relocations are done:
1. IRELATIVE relocations are now supported for x86/x86_64 and arm64.
2. IFUNC relocations are now relying on static linker to generate
them in correct order - this removes necessety of additional
relocation pass for ifuncs.
3. Related to 2: rela?.dyn relocations are preformed before .plt ones.
4. Ifunc are resolved on symbol lookup this approach allowed to avoid
mprotect(PROT_WRITE) call on r-x program segments.
Bug: 17399706
Bug: 17177284
Change-Id: I414dd3e82bd47cc03442c5dfc7c279949aec51ed
This patch fixes the problem with symbol search order
for dlsym(RTLD_DEFAULT/RTLD_NEXT, .) by loading libraries
and ld_preloads in correct order.
Bug: https://code.google.com/p/android/issues/detail?id=74255
Change-Id: If1ba5c807322409faa914e27ecb675e2c4541f0d
Attempt: 2
