Commit Graph

39 Commits

Author SHA1 Message Date
Mike Hommey
21f643ea4a Bug 1036286 - Delay registration of the faulty.lib signal handler until when it's necessary. r=nfroyd
It's necessary to delay it because for the second part, we need to call dlopen,
and until recently bionic's linker dead-locked when using dlopen from a static
initializer.
2014-08-07 02:51:03 +09:00
Mike Hommey
4fb678a58c Backout changeset 34235900c3a0 (bug 1036286) because it wasn't the right fix. 2014-08-05 16:07:06 +09:00
Mike Hommey
95e40852cb Bug 1036286 - Make sure libraries loaded by faulty.lib use its own sigaction. r=nfroyd
Android L added a libsigchain library it LD_PRELOADs. That library exposes
a different sigaction than libc's. It's used for ART.

faulty.lib gets its sigaction from libsigchain, but after bug 874708, the
libraries it loads simply use libc's sigaction, assuming it would be the
hooked one. In turn, this means libraries loaded by faulty.lib may
override faulty.lib's handler, which is definitely not the intent.

This essentially restores some of the code that bug 874708 removed.

An alternative fix would be to add support for LD_PRELOAD, but that has more
implications and feels more risky. This could be done, if necessary, as a
followup.
2014-07-24 13:43:56 +09:00
Robert O'Callahan
949537330f Bug 1006248. Part 1: Add MOZ_EXPORT in various places. r=glandium
--HG--
extra : rebase_source : cfe209a412cae28d405eae413415cebb6959072a
2014-05-06 17:26:46 +12:00
Douglas Crosher
a2f5f71531 Bug 944612 - Guard the ElfLoader sigaction wrapper against the SIGSEGV handler not being installed. r=glandium 2014-03-20 12:35:15 +11:00
Birunthan Mohanathas
866c961b74 Bug 784739 - Switch from NULL to nullptr in mozglue/linker/; r=ehsan 2013-11-11 14:15:46 -05:00
Jim Chen
a470a16c5b Bug 930627 - Implement __gnu_Unwind_Find_exidx in custom linker on ARM. r=glandium 2013-10-31 11:40:32 -04:00
Mike Hommey
e9d9adfd0d Bug 886736 - Disable on-demand decompression when latency to get into segfault handlers is too high. r=nfroyd 2013-10-01 15:30:45 +09:00
Mike Hommey
9400bbf7a7 Bug 907957 - Detect if a segfault signal handler is useless. If it is, disable on-demand decompression. r=nfroyd 2013-08-30 11:14:17 +09:00
Jim Chen
0bc2b5c5ea Bug 904646 - Skip NULLs when traversing envp/auxv pointers to let GDB work on Android 4.3; r=glandium 2013-08-14 12:54:33 -04:00
Mike Hommey
11a3618083 Bug 891266 - Allow to enable faulty.lib debug log at runtime. r=nfroyd 2013-07-10 14:12:35 +09:00
Mike Hommey
a6b496bb8d Bug 886730 - Add and use a MemoryRange class and helper functions for page alignment in faulty.lib. r=nfroyd 2013-06-27 09:35:49 +09:00
Mike Hommey
8fd281dcec Bug 886722 - Rename log/debug to LOG/DEBUG_LOG in faulty.lib. r=nfroyd 2013-06-27 09:35:49 +09:00
Mike Hommey
a682d7fe75 Bug 885336 - Fix various issues with the dl_mmap interface. r=nfroyd 2013-06-27 09:35:48 +09:00
Julian Seward
08b09fb3cc Bug 882903 - SPS breadkpad unwinder segfaults with on-demand decompression on. r=glandium. 2013-06-14 14:03:25 +02:00
Mike Hommey
835bd7384a Bug 874708 - Hook libc's sigaction to avoid system libraries replacing our segfault handler temporarily and restoring it wrongly. r=nfroyd 2013-06-09 09:23:03 +02:00
Mike Hommey
d06212fc0b Bug 861796 - Fix crash in LibHandle::~LibHandle. r=nfroyd 2013-04-15 18:36:13 +02:00
Mike Hommey
83a22e1678 Bug 802240 - Expose an API to mmap the underlying file for a library loaded by faulty.lib. r=nfroyd 2013-04-12 10:23:12 +02:00
Vicamo Yang
57bd116b87 Bug 859830: determine Android API level through android/api-leve.h instead. r=glandium 2013-04-12 13:39:42 +08:00
Mike Hommey
c55320bda8 Bug 842681 - Refactor the linker Zip code and allow to use an existing memory buffer as a Zip file. r=mwu 2013-03-08 09:24:46 +01:00
Mike Hommey
39e56e008a Bug 830326 - Get rid of warnings in the custom linker code. r=nfroyd 2013-01-15 10:12:56 +01:00
Mike Hommey
c405bd3d02 Bug 830295 - Avoid RefPtr<LibHandle> triggering recursive calls to ~CustomElf, and use it in the linker segfault handler. r=nfroyd 2013-01-15 10:12:36 +01:00
Mike Hommey
0fb348e03d Bug 826178 - Prefix all hexadecimal values with 0x in linker logs. r=nfroyd 2013-01-03 16:45:57 +01:00
Mike Hommey
e14946ab94 Fixup for dl_iterate_phdr after bug 808121. r=me 2012-11-07 16:45:48 +01:00
Mike Hommey
31305e4e03 Bug 808121 - Ensure the pointers we change in the r_debug data are writable, which they aren't with upcoming Android system linker. r=nfroyd 2012-11-07 08:02:53 +01:00
Mike Hommey
47d4a8624f Bug 783331 - Add Phdr pointer and count to dl_iterate_phdr implementation. r=nfroyd 2012-08-29 08:55:57 +02:00
Mike Hommey
91480beb18 Bug 747033 - Implement dl_iterate_phdr in the custom linker. r=froydnj
--HG--
rename : mozglue/linker/CustomElf.h => mozglue/linker/Elfxx.h
2012-04-25 09:05:02 +02:00
Mike Hommey
821a1ccc7c Bug 727960 - When extracting libraries, reuse cached library if it is newer than the apk. r=tglek 2012-02-22 08:12:15 +01:00
Mike Hommey
af3eac834f Bug 686805 part 6 - Add functions to display stats about seekable compressed streams. r=tglek 2012-02-22 08:12:15 +01:00
Mike Hommey
d8fa15fe94 Bug 686805 part 4 - Make the linker load libraries with on-demand decompression when they are seekable compressed streams. r=tglek,r=sewardj 2012-02-22 08:12:15 +01:00
Mike Hommey
8ec8693b3e Bug 686805 part 2 - Use a SIGSEGV signal handler to handle segmentation faults happening in loaded libraries address space. r=tglek,r=sewardj 2012-02-22 08:12:15 +01:00
Mike Hommey
7d1eec64ac Bug 725230 - Enable and fix assertions in linker code. r=tglek 2012-02-13 15:49:45 +01:00
Mike Hommey
c893472974 Backout 8eef38643ceb (bug 717540) and 78941a969e20 (bug 725230) because of windows debug bustage 2012-02-13 16:35:13 +01:00
Mike Hommey
c1b6200e80 Bug 725230 - Enable and fix assertions in linker code. r=tglek 2012-02-13 15:49:45 +01:00
Mike Hommey
aef323bb1b Bug 683127 part 10 - Allow debug symbols to be found under gdb without extracted libraries. r=tglek,r=mwu 2012-01-20 09:49:03 +01:00
Mike Hommey
da0affaf1e Bug 683127 part 9 - Allow to temporarily extract Elf files from a Zip archive for e.g. valgrind. r=tglek 2012-01-20 09:48:50 +01:00
Mike Hommey
c1f8abcc72 Bug 683127 part 8 - Allow to load Elf files from a Zip archive. r=tglek,r=sewardj 2012-01-20 09:48:44 +01:00
Mike Hommey
372473a08a Bug 683127 part 7 - Use a custom Elf linker for libraries given with an absolute path name. r=sewardj 2012-01-20 09:48:44 +01:00
Mike Hommey
e108f8075e Bug 683127 part 5 - Initial Elf Loader, wrapping around dlopen/dladdr/dlsym/dlclose. r=tglek,r=sewardj 2012-01-20 09:48:39 +01:00