8 Commits

Author SHA1 Message Date
Mark Mentovai
6278690abe Update copyright boilerplate, 2022 edition (Crashpad)
sed -i '' -E -e 's/Copyright (.+) The Crashpad Authors\. All rights reserved\.$/Copyright \1 The Crashpad Authors/' $(git grep -El 'Copyright (.+) The Crashpad Authors\. All rights reserved\.$')

Bug: chromium:1098010
Change-Id: I8d6138469ddbe3d281a5d83f64cf918ec2491611
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3878262
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
Commit-Queue: Mark Mentovai <mark@chromium.org>
2022-09-06 23:54:07 +00:00
Joshua Peraza
0a8985cd20 linux,arm: support memory tagging
64-bit ARM's Top-Byte-Ignore enables features such as memory tagging.
https://www.kernel.org/doc/html/latest/arm64/tagged-address-abi.html

Android 11 will start using memory tagging on some devices.
https://source.android.com/devices/tech/debug/tagged-pointers

Crashpad needs to remove the tags from pointers before comparing to
addresses or using with system calls.

Bug: crashpad:364
Change-Id: I67c6b9a4a86d090e1d139de727eb06d9e222cc25
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3078500
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
2021-10-13 21:23:34 +00:00
Peter Boström
1aa478d161 Remove DISALLOW_* macros in crashpad
This change was partially scripted and partially done manually with vim
regex + manually placing the deleted constructors.

The script change looked for destructors in the public: section of a
class, if that existed the deleted constructors would go before the
destructor.

For manual placement I looked for any constructor in the public: section
of the corresponding class. If there wasn't one, then it would ideally
have gone as the first entry except below enums, classes and typedefs.
This may not have been perfect, but is hopefully good enough. Fingers
crossed.

#include "base/macros.h" is removed from files that don't use
ignore_result, which is the only other thing defined in base/macros.h.

Bug: chromium:1010217
Change-Id: I099526255a40b1ac1264904b4ece2f3f503c9418
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3171034
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
2021-09-21 15:09:44 +00:00
Joshua Peraza
78bcb55e1c Construct ProcessMemoryLinux using PtraceConnection
Update ProcessMemoryLinux to be constructed from PtraceConnection
instead of being Initialize()d with a pid_t.

This allows consolidating PtraceClient's BrokeredMemory with
ProcessMemoryLinux and providing the PtraceConnection as a alternative
to the memory file (previously only done for brokered connections).

Change-Id: I1363e208030eaf595fb8051e9a2c6b255c1f9886
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3072402
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
2021-08-11 15:48:33 +00:00
Joshua Peraza
b918119ca2 linux: Read thread IDs via a PtraceConnection
Bug: crashpad:250
Change-Id: I2ff9c2d810f7af25f7438e974e0adfb5abebec16
Reviewed-on: https://chromium-review.googlesource.com/1200962
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
2018-09-12 00:39:03 +00:00
Joshua Peraza
10fd672bde linux: Enable brokered memory reading
This change:
1. Updates the broker's memory reading protocol to enable short reads.
2. Updates Ptracer to allow short reads.
3. Updates the broker to allow reading from a memory file.
4. Updates the broker's default file root to be "/proc/[pid]/".
5. Adds PtraceConnection::Memory() to produce a suitable memory reader
for a connection type.

Bug: crashpad:30
Change-Id: I8c004016065d981acd1fa74ad1b8e51ce07c7c85
Reviewed-on: https://chromium-review.googlesource.com/991455
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
2018-04-05 22:21:46 +00:00
Joshua Peraza
d108fd04a5 linux: Add PtraceConnection::ReadFileContents
Some files, such as /proc/[pid]/maps, may not be accessible to the
handler. This enables the handler access to the contents of those files
via the broker.

This change reads maps and auxv using ReadFileContents.

Bug: crashpad:30
Change-Id: Ia19b498bae473c616ea794ab51c3f22afd5795be
Reviewed-on: https://chromium-review.googlesource.com/989406
Reviewed-by: Mark Mentovai <mark@chromium.org>
2018-04-03 22:08:29 +00:00
Joshua Peraza
59c5d848e5 linux: Refactor ptrace usage.
1) Add PtraceConnection which serves as the base class for specific
types of connections Crashpad uses to trace processes.
2) Add DirectPtraceConnection which is used when the handler process
has `ptrace` capabilities for the target process.
3) Move `ptrace` logic into Ptracer. This class isolates `ptrace` call
logic for use by various PtraceConnection implementations.

Bug: crashpad:30
Change-Id: I98083134a9f7d9f085e4cc816d2b85ffd6d73162
Reviewed-on: https://chromium-review.googlesource.com/671659
Commit-Queue: Joshua Peraza <jperaza@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Reviewed-by: Leonard Mosescu <mosescu@chromium.org>
2017-09-22 16:25:32 +00:00