Commit graph

19 commits

Author SHA1 Message Date
Yabin Cui
ca48274298 Revert "Revert "Make sem_wait able to return errno EINTR for sdk > 23.""
This reverts commit 6d51085202.
And add missing bionic_sdk_version.h.

Change-Id: I24cc738b1fd1d26234c52afbc787f5b3c4a9c9cb
2016-01-25 17:39:18 -08:00
Elliott Hughes
ac67b4eb7c Merge "Revert "Make sem_wait able to return errno EINTR for sdk > 23."" 2016-01-26 00:32:38 +00:00
Dan Albert
6d51085202 Revert "Make sem_wait able to return errno EINTR for sdk > 23."
Broke the build. There's no such file as bionic_sdk_version.h anywhere in the tree.

This reverts commit 892b61d340.

Change-Id: Iec3f4588edfb1d1524bb5f16451fd05dc6ebe44a
2016-01-26 00:20:06 +00:00
Yabin Cui
c96b6e1747 Merge "Make sem_wait able to return errno EINTR for sdk > 23." 2016-01-25 23:39:29 +00:00
Yabin Cui
892b61d340 Make sem_wait able to return errno EINTR for sdk > 23.
Posix standards says sem_wait is interruptible by the delivery
of a signal. To keep compatiblity with old apps, only fix that
in newer sdk versions.

Bug: 26743454

Change-Id: I924cbb436658e3e0f397c922d866ece99b8241a3
2016-01-25 13:44:39 -08:00
Christopher Ferris
63860cb8fd Malloc debug rewrite.
The major components of the rewrite:

- Completely remove the qemu shared library code. Nobody was using it
  and it appears to have broken at some point.
- Adds the ability to enable/disable different options independently.
- Adds a new option that can enable the backtrace on alloc/free when
  a process gets a specific signal.
- Adds a new way to enable malloc debug. If a special property is
  set, and the process has an environment variable set, then debug
  malloc will be enabled. This allows something that might be
  a derivative of app_process to be started with an environment variable
  being enabled.
- get_malloc_leak_info() used to return one element for each pointer that
  had the exact same backtrace. The new version returns information for
  every one of the pointers with same backtrace. It turns out ddms already
  automatically coalesces these, so the old method simply hid the fact
  that there where multiple pointers with the same amount of backtrace.
- Moved all of the malloc debug specific code into the library.
  Nothing related to the malloc debug data structures remains in libc.
- Removed the calls to the debug malloc cleanup routine. Instead, I
  added an atexit call with the debug malloc cleanup routine. This gets
  around most problems related to the timing of doing the cleanup.

The new properties and environment variables:

libc.debug.malloc.options
  Set by option name (such as "backtrace"). Setting this to a bad value
  will cause a usage statement to be printed to the log.

libc.debug.malloc.program
  Same as before. If this is set, then only the program named will
  be launched with malloc debug enabled. This is not a complete match,
  but if any part of the property is in the program name, malloc debug is
  enabled.

libc.debug.malloc.env_enabled
  If set, then malloc debug is only enabled if the running process has the
  environment variable LIBC_DEBUG_MALLOC_ENABLE set.

Bug: 19145921

Change-Id: I7b0e58cc85cc6d4118173fe1f8627a391b64c0d7
2016-01-25 10:54:21 -08:00
Elliott Hughes
42d949ff9d Defend against -fstack-protector in libc startup.
Exactly which functions get a stack protector is up to the compiler, so
let's separate the code that sets up the environment stack protection
requires and explicitly build it with -fno-stack-protector.

Bug: http://b/26276517
Change-Id: I8719e23ead1f1e81715c32c1335da868f68369b5
2016-01-06 20:06:08 -08:00
Josh Gao
3c8fc2fea9 Move malloc dispatch table to __libc_globals.
Change-Id: Ic20b980d1e8b6c2d4b773ebe336658fd17c737cb
2015-10-12 17:54:58 -07:00
Josh Gao
93c0f5ee00 Move VDSO pointers to a shared globals struct.
Change-Id: I01cbc9cf0917dc1fac52d9205bda2c68529d12ef
2015-10-09 15:59:04 -07:00
Dmitriy Ivanov
4b41555ba5 Revert "Register __libc_fini as early as possible."
This reverts commit e880c736d6.

Change-Id: Ide83e442eb5dbfef5298a15bc602c3fe1dda1862
2014-09-04 21:54:34 +00:00
Dmitriy Ivanov
e880c736d6 Register __libc_fini as early as possible.
We want __libc_fini to be called after all the destructors.

Bug: 14611536
Change-Id: Ibb83a94436795ec178fd605fa531ac29608f4a3e
2014-09-03 15:27:29 -07:00
Dmitriy Ivanov
53c3c271dc Upstream atexit
Change-Id: Ia454a2181b5058ed9783dc02b6b1805d0e4d2715
2014-07-14 12:05:16 -07:00
Elliott Hughes
d286796fce Turn on -Wunused and fix the mistakes it uncovers.
Change-Id: I023d2d8b547fbc21d4124bb7510d42b06a0dc501
2014-06-03 15:22:34 -07:00
Elliott Hughes
07f1ded139 Remove the broken pthread deadlock prediction.
This hasn't built in over one release cycle and no one even noticed.
art does this the right way and other projects should do the same.

Change-Id: I7d1fb84c4080e008f329ee73e209ce85a36e6d55
2014-05-14 11:38:22 -07:00
Sreeram Ramachandran
ceb5bd787c Introduce netd_client, a dynamic library that talks to netd.
The library exists outside bionic. It is dynamically loaded, to replace selected
standard socket syscalls with versions that talk to netd.

Change connect() to use the library if available.

(cherry picked from commit 3a6b627a14df8111b03e452f2df4b5f4938e0e49)

Change-Id: Ib6198e19dbc306521a26fcecfdf6e8424d163fc9
2014-05-13 11:30:03 -07:00
Elliott Hughes
eb847bc866 Fix x86_64 build, clean up intermediate libraries.
The x86_64 build was failing because clone.S had a call to __thread_entry which
was being added to a different intermediate .a on the way to making libc.so,
and the linker couldn't guarantee statically that such a relocation would be
possible.

  ld: error: out/target/product/generic_x86_64/obj/STATIC_LIBRARIES/libc_common_intermediates/libc_common.a(clone.o): requires dynamic R_X86_64_PC32 reloc against '__thread_entry' which may overflow at runtime; recompile with -fPIC

This patch addresses that by ensuring that the caller and callee end up in the
same intermediate .a. While I'm here, I've tried to clean up some of the mess
that led to this situation too. In particular, this removes libc/private/ from
the default include path (except for the DNS code), and splits out the DNS
code into its own library (since it's a weird special case of upstream NetBSD
code that's diverged so heavily it's unlikely ever to get back in sync).

There's more cleanup of the DNS situation possible, but this is definitely a
step in the right direction, and it's more than enough to get x86_64 building
cleanly.

Change-Id: I00425a7245b7a2573df16cc38798187d0729e7c4
2013-10-09 16:00:17 -07:00
Elliott Hughes
2a0b873065 Fix __errno for LP64 and clean up __get_tls.
If __get_tls has the right type, a lot of confusing casting can disappear.

It was probably a mistake that __get_tls was exposed as a function for mips
and x86 (but not arm), so let's (a) ensure that the __get_tls function
always matches the macro, (b) that we have the function for arm too, and
(c) that we don't have the function for any 64-bit architecture.

Change-Id: Ie9cb989b66e2006524ad7733eb6e1a65055463be
2013-10-09 13:39:13 -07:00
Elliott Hughes
ce532721aa Hide various symbols that shouldn't be exposed.
A mangled symbol in libc.so is a symbol that shouldn't be exported
by libc.so.

Change-Id: Id92d1e1968b3d11d111a5d9ef692adb1ac7694a1
2013-03-15 16:31:09 -07:00
Elliott Hughes
42b2c6a5ee Clean up the argc/argv/envp/auxv handling.
There's now only one place where we deal with this stuff, it only needs to
be parsed once by the dynamic linker (rather than by each recipient), and it's
now easier for us to get hold of auxv data early on.

Change-Id: I6314224257c736547aac2e2a650e66f2ea53bef5
2013-02-07 11:44:21 -08:00