Add dlsym option to debug.ld.all and debug.ld.app.<appname> which
enables logging of dlsym calls.
Bug: http://b/29458203
Test: flash, set debug.ld.all to dlsym and check
if there are messages in logcat
Change-Id: I9cb815a38b5b98aac9ebe3ac1540bcdedd2e8db0
Do not hijack libdl.so methods but make libdl proxy calls to
loader instead. This will be replaces by calls to libc.so
once loader functionality is migrated.
Also add a lock to dl_unwind_find_exidx function call.
Test: bionic-unit-tests --gtest_filter=dl*:Dl*
Bug: http://b/27106625
Change-Id: Ic33a7109a86f4262798d63a35f4c61d15b0068bb
Bionic Loader now resolves real path for a library before running
asan path-translation. This fixes situations for bundled loading
libraries which are effectively symlinks to system library;
for example:
$ adb shell ls -l /system/app/NfcNci/lib/arm64/libnfc_nci_jni.so
/system/app/NfcNci/lib/arm64/libnfc_nci_jni.so -> /system/lib64/libnfc_nci_jni.so
Bug: http://b/33278445
Test: make and boot
Change-Id: If14a12087c92f8ca628504556332ba0cb67c9118
Android N restrict which libraries C/C++ code
can link against at runtime.
If device has a vendor partition
then /system/vendor symlink to /vendor.
Otherwise /vendor symlink to /system/vendor.
But is_system_library() is only checking /vendor/lib.
It will return false for /system/vendor/lib path.
It is need to add a real path to default library path.
Similarily, default ld library path is already checking.
parse_LD_LIBRARY_PATH()->parse_path()->resolve_paths()
Test: build bionic and run bionic-unit-tests
Bug: http://b/31919547
Change-Id: Ie6777e2b02729948ce77a94de32343d40358bf2c
Signed-off-by: Hyangseok Chae <neo.chae@lge.com>
Extract linker executable specific code to linker_main.cpp;
this part of code does not have a place in libdl.a/so.
Bug: http://b/14998480
Bug: http://b/30706810
Test: mm && run bionic-unit-tests
Change-Id: I90f7475e93a919b0f9525da22928089ad35b8f6c
The absolute path to an executable may no longer be valid for
example when the file is unlinked immediately after exec.
Using /proc/self/exe instead of absolute path solves this problem.
Bug: http://b/31084669
Test: Run the app from http://b/31084669 make sure executable starts
Test: by checking ps and /proc/<pid>/exe
Change-Id: I5c819f39ef0fc4fc71b05de71e8af9ede611f04c
(cherry picked from commit 7da4bbbe87)
open(2) can be used to open directories; use stat to
check that the file exists and is a regular file.
Addresses review comments for 5aa67675f8
Bug: http://b/30320104
Change-Id: Ia944db2f2f779a87ea01dd41dcd171e59c9bef01
This patch enables absolute path translation to instrumented library
when linker_asan is in use.
Test: adb shell cat /proc/<rlid pid>/maps | grep libril-qc-qmi-1.so
check that it is mapped from /data/vendor/lib64 and not /vendor/lib64
Bug: http://b/30320104
Change-Id: I3bc24754b192afc0a72d6f3801f7b42141ce715b
(cherry picked from commit 5aa67675f8)
Move soinfo and globals out of linker.cpp to
separate files.
Breaking up huge linker.cpp into smaller peaces
in order to make it easier to extract part of the
code that belongs to libdl.so and remove parts of
the code that do not belong to linker
(refactoring part 2 of many)
Change-Id: I868417f4b8d2b84d0e8265e354bc7977161497e2
Breaking up huge linker.cpp into smaller peaces
in order to make it easier to extract part of the
code that belongs to libdl.so and remove parts of
the code that do not belong to linker
(refactoring part 1 of many)
Change-Id: I57ac36677a815800dc127c8c45c3ea806c37e247
Test: bionic-unit-tests --gtest_filter=dl*:Dl*
This change includes dlwarning implementation and
the compatibility greylist for apps targeting pre-N.
Change-Id: Ibf02a07cc58cbbb1a5aef4ac34558c5d43e4305f
Test: Run bionic-unit-tests --gtest_filter=dl*:Dl*
The glibc implementation of the loader passes argc/argv/envp
to all elf constructors. This change makes bionic linker
behave in the same way.
Bug: http://b/30145768
Change-Id: I1c65c42aa5305a5b133c64b5748205bbde869e0e
Test: run bionic-unit-tests --gtest_filter=dl*:Dl*
This patch lets developers tune logging of dlopen/dlerror with
setting system property.
Note that for security purposes this option is disabled on user build
for non-debuggable apps.
For starters there are 3 debug options:
dlerror - enables logging of all dlerrors
dlopen - traces dlopen calls
To enable system-wide logging (works only for userdebug/eng builds)
use debug.ld.all property.
To enable logging for particular app use debug.ld.app.<appname> property.
Example: Running "adb shell setprop debug.ld.all dlerror,dlopen" will log all
dlerror message as well as trace all calls to dlopen.
Bug: http://b/29458203
Change-Id: I2392c80a795509e16fe5689d0500d18b99772a64
If a public library is missing, make it clear that there is no
library with that soname that is missing. This can help diagnose
problems if a library exists, but the library doesn't have the right
soname.
Bug: 29400363
(cherry picked from commit 9a84d90c75)
Change-Id: Ie2306a2e28aff779d07441dc8af078256b184f8a
create_namespace resolves caller namespace only
when caller did not explicitly specify parent namespace.
This saves about 25 microseconds for the case when
parent_namepsace is not null (for example when creating
second classloader for the app).
Bug: http://b/28801010
Change-Id: I50ded272c931db701e5a1d8c88ed5ffb13416539
This operation is the most expensive one and since it is
unlikely that the zip-entry name is invalid (given that it
is constructed by the platform) - it can removed.
The worst case scenario is dlopen() of non-existing libraries
taking more time. And this use-case is not on the critical path.
Bug: http://b/28801010
Change-Id: I10a6b0bf342404ab72f0f5102ebf19f6c06ee6bf
(cherry picked from commit a5c1c8e820)
This CL adds initialization of inode for the main executable
which enables linker to resolve the correct soinfo when
application calls dlopen with absolute path to the
main executable.
Bug: http://b/28420266
Change-Id: I102e07bde454bd44c6e46075e3faeeb5092830d8
This change enables apps to share libraries opened
with RTLD_GLOBAL between different classloader namespaces.
The new parameter to create_namespace allows native_loader
to instruct the linker to share libraries belonging to
global group from a specified namespace instead of
using the caller_ns.
Bug: http://b/28560538
Bug: https://code.google.com/p/android/issues/detail?id=208458
Change-Id: I5d0c62730bbed19cdeb16c7559c74aa262a2475f
Linker crashed if linking of the main executable fails
instead of aborting with readable error message.
This patch modifies unload to soinfo_unload it all at once
in this particular case. This helps avoid situations when
one of the libraries on the DT_NEEDED list of main executable
has gotten unloaded by previous library unload because it
DT_NEEDED it too.
Example (consider following dependency tree):
main_executable
|-> liba.so
|-> libb.so
|-> libb.so
The list of the libraries need to be unloaded in this case
is [liba.so, libb.so], but if linker does unload one by one
by the time it gets to libb.so - the soinfo for the library
is already unloaded (and the segments were unmapped).
Passing everything as an array helps soinfo_unload to check
if a library was already unloaded by looking into local_unload_list.
Bug: http://b/28565608
Change-Id: I7199290e10a186057dcf3b7b68dbce954af7dba1
linker didn't remove link to the soinfo from shared
namespaces on soinfo_unload, because it didn't keep
record of all namespaces the library is added to.
This change adds test for this and also fixes the
problem by introducing list of secondary namespaces
to soinfo, which is used to remove soinfo in
soinfo::remove_all_links().
Bug: http://b/28115950
Change-Id: Ifbf6e54f92fa6e88f86b6a8dd6dc22d4553afd22
linker doesn't call d-tors for RTLD_NODELETE libraries. There is
no need in reseting this flag in call_destructors (which is called
from soinfo_unload).
Change-Id: I3ed03fa7207b7acf598067276fbb8874e29b5e53
Linker was not unloading libraries marked with RTLD_NODELETE
even when there was a error on load. For example when one of
dt_needed libraries was not found.
Bug: http://b/27911891
Change-Id: Ibc0bf110aa41fbfdc9f327ad8c364f2e3600af71
(cherry picked from commit 79abce4214)
Handle no longer is a pointer to soinfo of
a corresponding library. This is done to
prevent access to linker internal fields.
Bug: http://b/25593965
Change-Id: I62bff0d0e5b2dc842e6bf0babb30fcc4c000be24
This patch uses __kernel_vsyscall instead of "int 0x80"
as the syscall entry point. AT_SYSINFO points to
an adapter to mask the arch specific difference and gives a
performance boost on i386 architecture.
Change-ID: Ib340c604d02c6c25714a95793737e3cfdc3fc5d7
Signed-off-by: Mingwei Shi <mingwei.shi@intel.com>
Print properties of the namespace on "library is not accessible"
error to better diagnose problems with native library accessiblity
Bug: http://b/27406143
Change-Id: Icf3d6c604f09dfa015de863fdb1267d343930d2a
(cherry picked from commit 350bdad61c)
This field is used only once and only for main executable;
no need to carry it around in soinfo structure.
Change-Id: I7f80c64e0939e28966b6fed858891f9ce2a9e26b
