Commit Graph

111 Commits

Author SHA1 Message Date
Jean-Baptiste Queru
25b7a16a6e Merge c4cb87f3
Change-Id: I4cc14eba43fde75a7702fdc7ad07d3d949e9c092
2012-02-01 09:46:08 -08:00
David 'Digit' Turner
70b1668a76 remove obsolete SuperH support
We don't have a toolchain anymore, we don't have working original
kernel headers, and nobody is maintaining this so there is really
no point in keeping this here. Details of the patch:

- removed code paths from Android.mk files related to the SuperH
  architecture ("sh")

- removed libc/arch-sh, linker/arch-sh, libc/kernel/arch-sh

- simplified libc/SYSCALLS.TXT

- simplified the scripts in libc/tools/ and libc/kernel/tools

Change-Id: I26b0e1422bdc347489e4573e2fbec0e402f75560

Signed-off-by: David 'Digit' Turner <digit@android.com>
2012-01-31 20:28:23 +01:00
Jesse Hall
f5d1693e3c Fix recursive ELF constructor check
The flag to avoid calling ELF constructors recursively (in the case
of recursive .so dependencies) was being set after the dangerous
recursive constructor call had already been made.

This fixes the libc's debug malloc implementation.

Change-Id: I5e601f0ea19ab1df81b8b1ad4df25c3eab0ccda4
2012-01-30 15:39:57 -08:00
Andy McFadden
1fc51769de Log debuggerd connection failures
Write a message to the log file if the signal handler is not able
to connect to debuggerd.  This is especially handy if the failure
was caused by running out of file descriptors, since there's some
chance that the lack of fds relates to the crash.

Sample:

 F libc    : Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1)
 F libc    : Unable to open connection to debuggerd: Too many open files

Bug 5926330

Change-Id: I0ff210d82ab1db39b08f328bae5e08f67a69e5d7
2012-01-26 13:40:38 -08:00
Jean-Baptiste Queru
f20d59e691 am c83c1da5: am cee8425f: Merge "Move variable declaration on its own line"
* commit 'c83c1da54831ef1c9ff59cf9df8d5c0173893ee5':
  Move variable declaration on its own line
2012-01-20 17:23:52 -08:00
Jean-Baptiste Queru
c3650d6a4b am 5b44655f: am 7e6a5773: Merge "Use the AT_SECURE auxv flag to determine whether to enable secure mode."
* commit '5b44655f22dd05c7cd8afcd218102616a6f5f4da':
  Use the AT_SECURE auxv flag to determine whether to enable secure mode.
2012-01-20 17:23:51 -08:00
Stephen Smalley
bb44055d0a Move variable declaration on its own line
Change-Id: Ied54ffabccdc867ea4e124a0f0324a217270d6e7
2012-01-20 10:59:15 -08:00
Stephen Smalley
861b42a2d8 Use the AT_SECURE auxv flag to determine whether to enable secure mode.
The Linux kernel provides an AT_SECURE auxv flag to inform userspace
whether or not a security transition has occurred.  This is more reliable
than directly checking the uid/gid against the euid/egid, because it covers
not only setuid/setgid but also file capabilities, SELinux, and AppArmor
security transitions.  It is also a more efficient test since it does
not require any additional system calls.

Change-Id: I9752a4f6da452273258d2876d13b05e402fb0409
2012-01-20 13:35:57 -05:00
Evgeniy Stepanov
e83c56dfbb Execute .preinit_array before any shared object initialization functions.
This change makes linker handling of .preinit_array compliant with the
System V ABI:

"These [pre-initialization] functions are executed after the dynamic linker has
built the process image and performed relocations but before any shared object
initialization functions."
http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#init_fini

Change-Id: Iebfee22bb1ebe1d7c7e69cb4686e4ebae0dfc4bb
2012-01-10 13:30:41 +04:00
Nick Kralevich
253b763160 get rid of unused "main" function.
confuses gdb.

Change-Id: I1c64357ce122fe5a2564ee96bb4caa32b733f6ea
2011-12-05 16:09:30 -08:00
Zhenghua Wang
0e0bd58631 am 1ad08626: am 897815a1: bionic: add machine type check
* commit '1ad08626a143dc684e92f56754c7176cc4914ce8':
  bionic: add machine type check
2011-11-30 10:50:57 -08:00
Zhenghua Wang
897815a1fe bionic: add machine type check
android linker doesn't check machine type, it may load some
libraries which it doesn't support sometimes.

Author: Zhenghua Wang <zhenghua.wang@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
2011-11-29 17:01:08 -08:00
Nick Kralevich
7e2daefe6c Merge "Make the linker relocatable." 2011-11-16 10:43:56 -08:00
David 'Digit' Turner
8180b08fb2 linker: Fix the computation of si->base
The computation of si->base assumed that the first entry in the
program header table is a PT_PHDR. This results in the dynamic
linker crashing with a SIGSEGV/MAPERR when trying to load some
of the NDK unit test programs, which happen to have an EXIDX
header first, followed byu a PHDR one.

This patch fixes the computation by parsing the program header
table, looking explicitely for the PHDR entry. This fixes the
load of the NDK unit test programs, and doesn't affect system
libraries.

Change-Id: Id18ea6037dbe950b5abbbce816c2960321f0b81d
2011-11-15 17:17:28 +01:00
Nick Kralevich
468319ce4f Make the linker relocatable.
Previously, the linker always loaded itself into the same
location in memory, which inhibited the effectiveness of Android's
ASLR implementation. Modify the linker code so it can be relocatable
and link itself at runtime.

Change-Id: Ia80273d7a00ff648b4da545f4b69debee6343968
2011-11-11 18:01:53 -08:00
Nick Kralevich
7939908c83 linker: set LOCAL_NO_CRT := true
Use LOCAL_NO_CRT to prevent linking against crtbegin.o, rather than
messing with build rules. This also prevents linking against crtend.o,
which isn't needed for the linker.

Change-Id: I0c5b9999be7e8676560fe145c1c033ffce8db4d1
2011-11-04 10:22:55 -07:00
Nick Kralevich
8e8a7b1f0f Revert "Make the linker relocatable."
This reverts commit 994e9a5ed1.

Broke x86 build.
2011-11-03 09:25:06 -07:00
Nick Kralevich
994e9a5ed1 Make the linker relocatable.
Previously, the linker always loaded itself into the same
location in memory, which inhibited the effectiveness of Android's
ASLR implementation. Modify the linker code so it can be relocatable
and link itself at runtime.

Change-Id: I90d064743abdd29450ac0482ed28752b2196286c
2011-11-02 16:20:06 -07:00
Nick Kralevich
d9ad62343c Add linker support for PIE
Modify the dynamic linker so that executables can be loaded
at locations other than 0x00000000.

Modify crtbegin* so that non-PIC compilant "thumb interwork
veneers" are not created by the linker.

Bug: 5323301
Change-Id: Iece0272e2b708c79034f302c20160e1fe9029588
2011-10-22 13:19:23 -07:00
Mathias Agopian
bda5da074e fix prototype of dladdr
this breaks C++ source code in particular.

Change-Id: Ie06b5d31d23b5455e6950c470adc64dd5e7784df
2011-09-28 12:17:34 -07:00
David 'Digit' Turner
96e5faccdc am 91966c30: am 0acdbe08: am 89ea107d: Merge "linker: allow debugging of constructors"
* commit '91966c30efbdc7feecd6c45a46ab488e715c0a35':
  linker: allow debugging of constructors
2011-08-30 09:50:54 -07:00
David 'Digit' Turner
91966c30ef am 0acdbe08: am 89ea107d: Merge "linker: allow debugging of constructors"
* commit '0acdbe0892105d01a38de9baf4e34eef22b8259c':
  linker: allow debugging of constructors
2011-08-29 18:01:05 -07:00
Nick Kralevich
38bccb271f linker.h: don't change the soinfo structure
In 48527c3f74, we modified the soinfo
structure to remove an unnecessary variable. However, third party
programs seem to be relying on the structure not changing.
Add a dummy variable back into place to preserve structure.

Bug: 5064106

Change-Id: I3014dda1a46e624644b09e156c3e9381ba3729bd
2011-08-29 13:52:18 -07:00
David 'Digit' Turner
e5ea45547e linker: allow debugging of constructors
This patch allows the debugging of constructors in shared
libraries and executables. It does so by ensuring that the
corresponding binary is visible to gdb before running the
constructors.

Change-Id: I0a3df726a04ad109944c834dcbba672b85d3991e
2011-08-27 10:21:01 +02:00
Andy McFadden
ec92af8fe5 Log signal info at time of receipt
When a fatal signal is received, we now write a message to the log
that looks like this:

  F/libc    ( 1540): Fatal signal 11 (SIGSEGV) at 0xdeadd00d (code=1)

This is useful for debugging fatal signals that turn out not to be
fatal.  This also changes the signal reset from SIG_IGN to SIG_DFL,
so that future non-fatal fatal signals are fatal.

The code that blocked SIGUSR1 to avoid being interrupted by the GC
has been removed.

Also, fix minor issues in format_buffer().

Bug 5035703

Change-Id: I8940af47297b5dcf3cf33537e3483ca5334ed565
2011-08-04 14:48:15 -07:00
Shih-wei Liao
48527c3f74 Revert "Revert "linker: get rid of the buddy allocator""
This reverts commit f9a9cda23a.
This revert is promised once b/5039224, b/5036755, b/5036610 are resolved.
2011-07-17 12:32:43 -07:00
Nick Kralevich
f9a9cda23a Revert "linker: get rid of the buddy allocator"
This reverts commit 7059b1f02e.
Bug: 5036610
2011-07-15 16:12:45 -07:00
Nick Kralevich
7059b1f02e linker: get rid of the buddy allocator
Currently, the Android linker is placing shared libraries into
a well-known spot in memory.  This is interfering with the kernel's
ASLR support.

This change stops forcing non-prelinked libraries into a particular
address space.

Also, get rid of FLAG_PRELINKED.  As best I can tell, this flag
is never used.

Change-Id: I527af12fb54f821c2b5ca7693dbf63d022f8f4ae
2011-07-14 13:48:13 -07:00
Martijn Coenen
a903811819 Revert "x86: Enable -fstack-protector"
This reverts commit e0b4844a20,
causes netd to crash.
2011-06-07 17:19:12 +02:00
David Turner
65fb884d28 am 204d1f65: am b2c7e0c1: Merge "x86: Enable -fstack-protector"
* commit '204d1f65dbfc6d5a14a90627d9d1efcfce8261ee':
  x86: Enable -fstack-protector
2011-06-06 12:57:08 -07:00
David Turner
204d1f65db am b2c7e0c1: Merge "x86: Enable -fstack-protector"
* commit 'b2c7e0c18b7ab04cfe306277c79165de0612a2d1':
  x86: Enable -fstack-protector
2011-06-06 11:32:49 -07:00
Bruce Beare
e0b4844a20 x86: Enable -fstack-protector
Change-Id: Ib69514c3afcb4c1f5e5f3f8cd91acfd145a0866c
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
2011-05-24 13:32:14 -07:00
David Turner
c2af2c075f am 1af88c97: am d004dc99: Merge "Use MAP_FIXED when allocating prelinked shared library regions"
* commit '1af88c97432c88ec5b39d155e8c296d2a6eb1225':
  Use MAP_FIXED when allocating prelinked shared library regions
2011-05-02 13:30:03 -07:00
David Turner
1af88c9743 am d004dc99: Merge "Use MAP_FIXED when allocating prelinked shared library regions"
* commit 'd004dc9957cd8944d3db8ed92544c8ee65b117ca':
  Use MAP_FIXED when allocating prelinked shared library regions
2011-05-02 12:34:57 -07:00
Iliyan Malchev
368070454b bionic: remove LOCAL_PRELINK_MODULE
Change-Id: Iad65ae18446b20d2aace7b8fe19b1a032b616e9c
Signed-off-by: Iliyan Malchev <malchev@google.com>
2011-03-14 14:25:58 -07:00
Chris Dearman
db4bce0549 Use MAP_FIXED when allocating prelinked shared library regions
Prelinked libraries must be mapped to a fixed address. MAP_FIXED is ignored
for non-prelinked libraries (si->base==0)

Signed-off-by: Raghu Gandham <raghu@mips.com>
2011-03-10 10:48:14 -08:00
David 'Digit' Turner
81d79f9fb3 am 962dcb22: am fed58049: Merge "libc: Fix PTHREAD_RWLOCK_INITIALIZER"
* commit '962dcb22218a1a6d4ebd05e4fc4a69875d037234':
  libc: Fix PTHREAD_RWLOCK_INITIALIZER
  Proxy getnameinfo through netd
  Updated gcc 4.4.3 IA toolchain doesn't require the .ctors list
  Convert cname lenght before use
2011-03-10 01:55:35 -08:00
Bruce Beare
48e1feaa9d Updated gcc 4.4.3 IA toolchain doesn't require the .ctors list
Change-Id: Ia840a19a45257128eccdcf25d105f500f2d90741
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
2011-02-16 17:50:23 -08:00
Kenny Root
72f9a5c374 Increase SO_MAX to accomodate valgrind
system_server loads up 87 shared libraries upon start. Running under
valgrind pushes this just over the edge of 96. Increase SO_MAX to 128 to
give us some more headroom.

Change-Id: Iadceb14ab6d9621bdccd292570d50867828057d9
2011-02-10 17:02:23 -08:00
tedbo
b67c1bacd0 Fix bug in linker environment variable lookup.
The linker_env_get() method that is used to match an environment
variable was failing due to an incorrect equality check.

This  was introduced in git change
be5755969d.

The bug was causing the linker to ignore environment variables such
as LD_LIBRARY_PATH. This issue also affects the linker_env_secure()
path that removes unsafe environment variables, since it would
not match any in the unsecure variable list.

Change-Id: I14228df9252010e9fb4c1862bed5735f23e97aec
2011-01-21 21:15:08 +01:00
tedbo
b3cdf7fef8 Fix bug in linker environment variable lookup.
The linker_env_get() method that is used to match an environment
variable was failing due to an incorrect equality check.

This  was introduced in git change
be5755969d.

The bug was causing the linker to ignore environment variables such
as LD_LIBRARY_PATH. This issue also affects the linker_env_secure()
path that removes unsafe environment variables, since it would
not match any in the unsecure variable list.

Change-Id: I169024de4a005321e768accd38246fc1d717271b
2011-01-20 20:44:44 -08:00
Glenn Kasten
1f353828c3 Fix typos
Change-Id: Ia02baba53be7034903f325258205441e5c193f7b
2011-01-18 09:36:38 -08:00
David 'Digit' Turner
be5755969d linker: Remove unsecure env. variable for setuid programs.
This removes several unsecure environment variables from the
environment block when the program being loaded is setuid. The
list of env. variables is the same than what GLibc uses at this
point.

Change-Id: I456d3ea0880fe0d4de0d3c5dd51871dd36e87fd6
2010-12-20 12:06:45 +01:00
Brian Swetland
fedbcde6ef add /vendor support
- add /vendor/lib to front of default library search path
- remove long-obsolete /lib from default library search path

Change-Id: I7d33bf899be018e7cc4c213d5790bbd991023a62
2010-09-19 03:39:13 -07:00
Dima Zavin
a716190241 linker: fix overwriting the real linker error string
Change-Id: Ia9165fd9aa1951b2bb81d0ac8f5bb3057aded8bd
Signed-off-by: Dima Zavin <dima@android.com>
2010-08-17 15:57:55 -07:00
David 'Digit' Turner
6774809b62 linker: Support dlopen(NULL, ...) properly.
Change-Id: Icba37823cb350c34848cc466d144c3a0af87c94c
2010-07-23 12:16:15 -07:00
David 'Digit' Turner
8bff9a31aa linker: remove libcutils dependency by re-implementing simpler socket_local_client.
Change-Id: I87f29fd59454d713b9ddfb13e6cf114822f52efd
2010-06-10 22:58:22 -07:00
Jean-Baptiste Queru
f439445830 fix build
Change-Id: I243c98e20a250e0d40d481f16af481ff070219fd
2010-05-12 10:05:59 -07:00
The Android Open Source Project
bb7928ccda merge from open-source master
Change-Id: Iecfd2bd3069f70bbe508042cc249fcf7ff24800d
2010-05-12 09:22:50 -07:00
Matt Fischer
4fd42c1dc0 Added support for LD_PRELOAD
The LD_PRELOAD environment variable allows the user to specify a list of
libraries which should be unconditionally loaded before any others.  This
makes possible some useful tricks, such as library interposers.

Change-Id: I433d775ab08ef63a5fbe7b21f87a5642954fc32f
2010-05-10 15:09:19 -07:00