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286 Commits

Author SHA1 Message Date
Josh Gao f3dde2f869 debuggerd: set the name of the signal sender. 
Change-Id: I6bff938e229d2368250d4b5c268fa24bd4badea0
 2016-03-29 17:56:47 -07:00
Josh Gao 8aeabe15dd Merge "debuggerd: waitpid for all children, and log the result." 2016-03-23 21:10:38 +00:00
Josh Gao 6e183586e3 Merge "debuggerd: always send SIGCONT after detaching." 2016-03-23 21:09:21 +00:00
Josh Gao 2808005521 debuggerd: waitpid for all children, and log the result. 
Change-Id: Ic575e6db76ab153b4b238589a8cd299812d0e046
 2016-03-23 14:07:58 -07:00
Josh Gao 24464185eb debuggerd: always send SIGCONT after detaching. 
Bug: http://b/27330889
Change-Id: I104248af1cde03dbdbacc03c87fe7e2dffd6c037
 2016-03-23 14:07:58 -07:00
Elliott Hughes ae38923c3e Switch debuggerd over to unique_fd. 
Change-Id: I858b9ac6a3ed47b4cc81cfe49f1ceb1e06356a03
 2016-03-22 20:03:13 -07:00
Josh Gao 676a756b7b debuggerd: don't apply timeout when wait_for_gdb is on. 
Change-Id: Ic632dde4a0510c212a4b1c01890df9a41e9771c9
 2016-03-17 15:29:00 -07:00
Josh Gao b17f228ff6 debuggerd: don't send SIGSTOP to crashing processes. 
This was actually nonfunctional until f5e8f0b, because it was using kill
after privileges were dropped. This doesn't seem necessary after the
changes to the sibling thread ptrace logic, though.

Bug: http://b/27427439
Change-Id: I6bffbc14e0cf5e377bbfa39c945518e0d436c223
 2016-03-17 13:47:48 -07:00
Josh Gao 1b301836bb debuggerd: fix stupid typo. 
Change-Id: Icd9a25a71e1e8580a200fe68bce0b17d09c51642
 2016-03-17 13:21:56 -07:00
Josh Gao 630bc80e18 debuggerd: monitor the worker process for failure. 
Use sigtimedwait on SIGCHLD to watch our forked worker processes for
failure, so that we can guarantee that we always resume/kill the target
process if libunwind crashes.

Bug: http://b/27427439
Change-Id: I5a5da1f1abd7dc9d01223f5b3778e946e2d47d20
 2016-03-17 11:43:55 -07:00
Josh Gao f5e8f0b9cd debuggerd: fork the signal sender once. 
Bug: http://b/27427439
Change-Id: I6294ff68a150bc9950a300264c31d2141307ac66
 2016-03-17 11:27:31 -07:00
Josh Gao 561497c0a8 debuggerd: kill crashing processes with the signal they died with. 
Bug: http://b/27675306
Change-Id: I951c5d7e54c35d88c65c5dc856e0b9d5a93d47b2
 2016-03-16 16:10:48 -07:00
Christopher Ferris 3f9c22c34c Merge "Add error reporting mechanism for failing Unwind." 2016-03-10 22:12:35 +00:00
Christopher Ferris 206a3b9798 Add error reporting mechanism for failing Unwind. 
Remove the logging of an error if a thread disappears before the unwind
can begin. This can happen, so allow the caller to determine if this
is really a problem worth logging.

Bug: 27449879
Change-Id: Ie81718d53fb0e519fa0a7db9fd5f314b72bfa431
 2016-03-10 12:39:15 -08:00
Josh Gao f0c8723bdd debuggerd: make sure that we kill the process after dumping. 
Bug: http://b/27367422
Change-Id: Icd704b1effd558904975cfc524714b51917a653f
 2016-03-09 15:59:27 -08:00
Elliott Hughes dbab798695 Merge "Clean up CLOEXEC in debuggerd." 
am: f405d245eb

* commit 'f405d245eb1288c8085cfdeaa3e02b4af707c4f1':
  Clean up CLOEXEC in debuggerd.
 2016-02-23 18:46:21 +00:00
Elliott Hughes 17ba68d0cd Clean up CLOEXEC in debuggerd. 
Change-Id: I1cd75f6a8f98e99f4a4fedfc706103ce34035765
 2016-02-19 18:13:02 -08:00
Elliott Hughes bdf9d18c34 Merge "Remove dead code from debuggerd." 
am: fbaefc4d9d

* commit 'fbaefc4d9d4e7e40ec0262123cd54762b81ed47a':
  Remove dead code from debuggerd.
 2016-02-19 19:42:29 +00:00
Elliott Hughes fbaefc4d9d Merge "Remove dead code from debuggerd." 2016-02-19 19:36:22 +00:00
Elliott Hughes 6da1353863 Remove dead code from debuggerd. 
system/core/debuggerd/debuggerd.cpp:683:5: warning: Value stored to 'logsocket' is never read
    logsocket = -1;
    ^           ~~

Bug: http://b/27264392
Change-Id: I8eab8a02b67f219c32aea49e4d4957e5642df38f
 2016-02-19 10:41:17 -08:00
James Hawkins 0f5d443d0c Merge "system/core: Cleanup direct calls to opendir by containing in a std::unique_ptr." 
am: bd04bb0d29

* commit 'bd04bb0d297c1a7cd5aabdc258b1829905fb067d':
  system/core: Cleanup direct calls to opendir by containing in a std::unique_ptr.
 2016-02-19 17:51:44 +00:00
James Hawkins 588a2cad7f system/core: Cleanup direct calls to opendir by containing in a 
std::unique_ptr.

Bug: 26643633
Change-Id: Ia3491fdbff086558da694ae949cf08e4c89d0307
 2016-02-18 14:52:46 -08:00
Bill Yi 4409f1446c Merge commit '4352ee87fd74b931d4b58192fb8974e91aa899d0' into HEAD 2016-02-17 11:37:00 -08:00
Christopher Ferris 5d56e28537 Newer kernels added SEGV_BNDERR. 
Bug: 23789423
Change-Id: I6fdce75715edfce179df8c0e6a7205f26341ebd0
 2016-02-04 14:07:23 -08:00
Elliott Hughes 2f74a5dae5 Start debuggerd as soon as logd is up. 
Makes debugging early boot crashes easier.

Bug: http://b/26918597
Change-Id: I5bb883f1350ea5f7a545cb0e9f1034ecfcf47cdb
 2016-02-02 13:03:41 -08:00
Josh Gao f983e6ce5a Merge "debuggerd: fix debug.debuggerd.wait_for_gdb." 
am: a590596dca

* commit 'a590596dcac8cc6a2ffaab110bdd89fdb5f837d8':
  debuggerd: fix debug.debuggerd.wait_for_gdb.
 2016-01-15 19:40:49 +00:00
Josh Gao 2318cc0155 Merge "debuggerd: fix several bugs caused by fork/setuid change." 
am: 1bf7000033

* commit '1bf700003368e8b68b34a0f9968ae5afd25dd4f2':
  debuggerd: fix several bugs caused by fork/setuid change.
 2016-01-15 19:40:41 +00:00
Josh Gao c362c45949 debuggerd: fix debug.debuggerd.wait_for_gdb. 
Bug: http://b/26513486
Change-Id: I01c28ce810a49f8a4e0e2a86c7d018d95f9617c8
 2016-01-15 11:31:17 -08:00
Josh Gao 7c89f9e955 debuggerd: fix several bugs caused by fork/setuid change. 
Previously, we weren't PTRACE_ATTACHing to all of the threads of a
process, and we were also trying to do it after forking and dropping
privileges. This patch ensures that all ptrace attaching/detaching
happens in one place, before forking/exiting respectively.

Bug: http://b/26443860
Bug: http://b/26436605
Bug: http://b/26436486
Change-Id: Id94e0c1d9d56c051d0dd281d895aaa3285079198
 2016-01-14 15:06:37 -08:00
Colin Cross ce93dd6fcc Merge "debuggerd_test: provide stub selinux/android.h" 
am: 5e19382e1c

* commit '5e19382e1c585967ee07b14fbb36a8027c92c394':
  debuggerd_test: provide stub selinux/android.h
 2016-01-08 20:54:20 +00:00
Colin Cross 5e19382e1c Merge "debuggerd_test: provide stub selinux/android.h" 2016-01-08 20:49:47 +00:00
Dan Willemsen 3be0a0df2c Merge "Turn off -Wdate-time for crasher" 
am: 392867cff1

* commit '392867cff1584f2ee475aae4b8f89778085a7de0':
  Turn off -Wdate-time for crasher
 2016-01-06 00:35:00 +00:00
Dan Willemsen 392867cff1 Merge "Turn off -Wdate-time for crasher" 2016-01-06 00:23:37 +00:00
Josh Gao 8a43d6ae06 Merge "debuggerd: fork and drop privileges when dumping." 
am: b8e9ebf8b4

* commit 'b8e9ebf8b4b840e4421534ffccce84d7ef49dc0f':
  debuggerd: fork and drop privileges when dumping.
 2016-01-06 00:05:32 +00:00
Josh Gao e7a9e52740 debuggerd: fork and drop privileges when dumping. 
Bug: http://b/25195825
Change-Id: I913d8425232e79df3f7a051a8cc63de9c60f4780
 2016-01-05 15:59:01 -08:00
Colin Cross 061e4a7d59 debuggerd_test: provide stub selinux/android.h 
debuggerd_test stubs out the selinux/android.h interface, but was
relying on copied selinux headers to declare the interface.  Create a
stub selinux/android.h header included by the test to declare the
interface.

Change-Id: I6a2d402dda1797deb2515f10b663b1a84d498eac
 2015-12-21 16:29:02 -08:00
Erik Kline cbc6f68e32 Merge "Switch from using sockaddr to sockaddr_storage." am: 46b0b1c694 
am: 4c1b3840f0

* commit '4c1b3840f092e63b0b8db8998b3bbc3465ff7c91':
  Switch from using sockaddr to sockaddr_storage.
 2015-12-08 01:48:58 +00:00
Erik Kline 46b0b1c694 Merge "Switch from using sockaddr to sockaddr_storage." 2015-12-08 01:41:38 +00:00
Elliott Hughes 3608ee5e90 Merge "Track rename of base/ to android-base/." am: 912ed3d8ca 
am: e2a9563be1

* commit 'e2a9563be1d540a1fb91489986bf6a72d54b59c8':
  Track rename of base/ to android-base/.
 2015-12-07 23:36:59 +00:00
Erik Kline 7e16cc15b5 Switch from using sockaddr to sockaddr_storage. 
This is to ensure sufficient space is always available.

Change-Id: Ifa87b93ecdc90dcacbfb24446c872344da6703d3
 2015-12-07 16:07:46 +09:00
Elliott Hughes 4f71319df0 Track rename of base/ to android-base/. 
Change-Id: Idf9444fece4aa89c93e15640de59a91f6e758ccf
 2015-12-04 22:00:26 -08:00
Josh Gao 729ed79c51 Merge "debuggerd: remove some levels of indentation." am: cdff80c446 
am: e2773a3f8e

* commit 'e2773a3f8eb1c770c1214fb43089f35cf4ca47c7':
  debuggerd: remove some levels of indentation.
 2015-11-18 17:19:33 +00:00
Josh Gao 8ab7fd4017 debuggerd: remove some levels of indentation. 
Use ScopedFd and unique_ptr to manage resources, so that we can early
exit instead of having 9 levels of indentation.

Change-Id: Ia5fed76c7d959f1f198ea540c56c508f7e1585c4
 2015-11-17 14:44:50 -08:00
Josh Gao 93621bbf19 Merge "debuggerd: add .clang-format." am: c5a85f71ab 
am: b4362070fc

* commit 'b4362070fc4c9b8178d75aaa6ab7932db5b845e1':
  debuggerd: add .clang-format.
 2015-11-17 22:32:17 +00:00
Josh Gao d918eedf29 debuggerd: add .clang-format. 
Change-Id: I3584c170aadc3707638e407c7a8ca502f3670058
 2015-11-16 17:26:22 -08:00
Nick Kralevich 7dafe5b818 Merge "Enable hidepid=2 on /proc" am: 2d8f1d4c47 
am: ea8452cc72

* commit 'ea8452cc720cfcf2d8d1f469bbaafec968202e99':
  Enable hidepid=2 on /proc
 2015-11-09 20:35:18 +00:00
Nick Kralevich c39ba5ae32 Enable hidepid=2 on /proc 
Add the following mount options to the /proc filesystem:

  hidepid=2,gid=3009

This change blocks /proc access unless you're in group 3009
(aka AID_READPROC).

Please see
  https://github.com/torvalds/linux/blob/master/Documentation/filesystems/proc.txt
for documentation on the hidepid option.

hidepid=2 is preferred over hidepid=1 since it leaks less information
and doesn't generate SELinux ptrace denials when trying to access
/proc without being in the proper group.

Add AID_READPROC to processes which need to access /proc entries for
other UIDs.

Bug: 23310674
Change-Id: I22bb55ff7b80ff722945e224845215196f09dafa
 2015-11-09 09:08:46 -08:00
Dan Willemsen 9bef9660fd Turn off -Wdate-time for crasher 
This is an optional diagnostic tool where it's useful to know if you are
running the version that you just built. Allow the use of __TIME__
without a warning or error.

Bug: 24204119
Change-Id: I78063c2694b80ccaf5891d1cd649ea17eda978cb
 2015-11-02 15:41:59 -08:00
Christopher Ferris 0dac031b03 Fix incorrect check of descsz value. am: d917514bd6 am: 69406d904a 
am: 3f5fdc3522

* commit '3f5fdc35228b4bf9c86a91a35fc73a06d14391c5':
  Fix incorrect check of descsz value.
 2015-10-29 19:23:54 +00:00
Christopher Ferris d917514bd6 Fix incorrect check of descsz value. 
Bug: 25187394

(cherry picked from commit 1fa55234d6)

Change-Id: Idbc9071e8b2b25a062c4e94118808d6e19d443d9
 2015-10-22 17:54:24 -07:00