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[scudo][standalone] Add error reports

Authored by cryptoad on Mar 19 2019, 9:50 AM.



This change adds fatal error messages for various error conditions that
will be added later in the code.
This also addresses a TODO now that we have reportCheckFailed (which
lead me to notice a few variables that were not cased properly so I
changed that as well).

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cryptoad created this revision.Mar 19 2019, 9:50 AM
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hctim added inline comments.Mar 19 2019, 10:31 AM

Nit: Newline between {report.h} and {atomic_helpers.h, string_utils.h}. Module header should be first, but putting the module header and subproject headers together without a newline makes them look like they should be in sorted order.


Is there a reason why the use of this enum is deliberately occluded from those who use it? Why don't you use this as an enum class AllocatorAction with an internal toString method, and then reportInvalidChunkState(..) and others can take AllocatorAction Action as the first argument, instead of occluding it into a u8?

This would also remove the need to have ActionsCount and check-fail on this (, as you would have compile-time guarantees that the provided enum value is in range.

cryptoad updated this revision to Diff 191347.Mar 19 2019, 10:33 AM

Updating formating.

cryptoad marked 2 inline comments as done.Mar 19 2019, 11:02 AM
cryptoad added inline comments.

I think the only reasoning I had was to try and keep things compact, uploading a version that hopefully fits the requirements.

cryptoad updated this revision to Diff 191355.Mar 19 2019, 11:03 AM

Addressing Mitch's comments.

morehouse added inline comments.Mar 19 2019, 11:21 AM



s/a pointer than/or a pointer that


I don't understand what this means exactly.

Maybe you mean something like: "The allocator was compiled with parameters that conflict with field size requirements."


Test for AllocatorAction::Sizing?

cryptoad updated this revision to Diff 191359.Mar 19 2019, 11:26 AM
cryptoad marked 4 inline comments as done.

Addressing Matt's comments.

This revision is now accepted and ready to land.Mar 19 2019, 11:31 AM
hctim added inline comments.Mar 19 2019, 11:35 AM

Could this be implemented as a member function of enum class AllocatorAction?

hctim accepted this revision.Mar 19 2019, 12:50 PM



Scrap this, I could have sworn that this was possible, turns out I'm mistaken!

vitalybuka accepted this revision.Mar 19 2019, 5:37 PM
This revision was automatically updated to reflect the committed changes.