Commit Graph

13 Commits

Author SHA1 Message Date
David Carlier 53065c543f [Sanitizers] Remove OpenBSD support (new attempt)
- Fixing VS compiler and other cases settings this time.

Reviewers: dmajor, hans

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D89759
2020-10-20 11:16:09 +01:00
Evgenii Stepanov 7ecd60bb70 Revert "[Sanitizers] Remove OpenBSD support" + 1
Revert "Fix compiler-rt build on Windows after D89640"

This reverts commit a7acee89d6.
This reverts commit d09b08919c.

Reason: breaks Linux / x86_64 build.
2020-10-19 16:11:21 -07:00
David Carlier d09b08919c [Sanitizers] Remove OpenBSD support
- Removing unused and unusable code.

Reviewers: krytarowski

Reviewed By: krytarowski

Differential Revision: https://reviews.llvm.org/D89640
2020-10-18 14:57:07 +01:00
Dokyung Song 226866e115 [libFuzzer] Separate platform related macros out from FuzzerDefs.h into FuzzerPlatform.h, and adjust includes in other files.
Summary: This patch separates platform related macros in lib/fuzzer/FuzzerDefs.h into lib/fuzzer/FuzzerPlatform.h, and use FuzzerPlatform.h where necessary. This separation helps when compiling libFuzzer's interceptor module (under review); an unnecessary include of standard headers (such as string.h) may produce conflicts/ambiguation with the interceptor's declarations/definitions of library functions, which complicates interceptor implementation.

Reviewers: morehouse, hctim

Reviewed By: morehouse

Subscribers: krytarowski, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D83805
2020-07-14 21:31:56 +00:00
Jonathan Metzman 23bee0b0cf [fuzzer] Add basic support for emscripten.
Summary:
Add basic support for emscripten.

This enables libFuzzer to build (using build.sh) for emscripten and fuzz
a target compiled with
-fsanitize-coverage=inline-8bit-counters.

Basic fuzzing and bug finding work with this commit.
RSS limit and timeouts will not work because they depend on system
functions that are not implemented/widely supported in emscripten.

Reviewers: kcc, vitalybuka, hctim

Reviewed By: hctim

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D71285
2019-12-12 08:56:47 -08:00
Marco Vanotti e5b603a4c3 [libFuzzer] don't use /dev/null for DiscardOuput in Fuchsia.
Summary:

This commit moves the `DiscardOutput` function in FuzzerIO to
FuzzerUtil, so fuchsia can have its own specialized version.

In fuchsia, accessing `/dev/null` is not supported, and there's nothing
similar to a file that discards everything that is written to it. The
way of doing something similar in fuchsia is by using `fdio_null_create`
and binding that to a file descriptor with `fdio_bind_to_fd`.

This change should fix one of the issues with the `-close_fd_mask` flag
in libfuzzer, in which closing stdout was not working due to
`fopen("/dev/null", "w")` returning `NULL`.

Reviewers: kcc, aarongreen

Subscribers: #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D69593
2019-11-21 16:56:05 -08:00
Kostya Serebryany 63f48717b5 [libFuzzer] extend the -fork=1 functionality. Still not fully usable, but good enough for the first unit test
llvm-svn: 353775
2019-02-12 00:12:33 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Vitaly Buka 9802089e13 libFuzzer, OpenBSD support
Summary:
- Enabling libfuzzer on OpenBSD
- OpenBSD can t support asan, msan ... the tests can t be run.

Patch by David CARLIER

Reviewers: eugenis, phosek, vitalybuka

Reviewed By: vitalybuka

Subscribers: srhines, mgorny, krytarowski, llvm-commits, #sanitizers

Differential Revision: https://reviews.llvm.org/D44877

llvm-svn: 329631
2018-04-09 22:38:26 +00:00
Kamil Rytarowski e81e944199 lib Fuzzer FreeBSD support
Summary: Patch by David CARLIER

Reviewers: vitalybuka, kcc, dim, emaste, davide, morehouse, george.karpenkov

Reviewed By: morehouse

Subscribers: george.karpenkov, kubamracek, srhines, mgorny, emaste, krytarowski

Differential Revision: https://reviews.llvm.org/D41642

llvm-svn: 322380
2018-01-12 17:15:05 +00:00
Matt Morehouse 04304d129b [libFuzzer] Encapsulate commands in a class.
Summary:
To be more portable (especially w.r.t. platforms without system()),
commands should be managed programmatically rather than via string
manipulation on the command line. This change introduces
Fuzzer::Command, with methods to manage arguments and flags, set output
options, and execute the command.

Patch By: aarongreen

Reviewers: kcc, morehouse

Reviewed By: kcc, morehouse

Subscribers: llvm-commits, mgorny

Differential Revision: https://reviews.llvm.org/D40103

llvm-svn: 319680
2017-12-04 19:25:59 +00:00
Kamil Rytarowski 8da2722a9f Add preliminary NetBSD support in libfuzzer
Summary:
This code already works and passes some number of tests.

There is need to finish remaining sanitizers to get better coverage.

Many tests fail due to overly long file names of executables (>31).
This is a current shortcoming of the NetBSD 8(beta) kernel, as
certain functions can fail (like retrieving file name of executable).

Sponsored by <The NetBSD Foundation>

Reviewers: joerg, kcc, vitalybuka, george.karpenkov

Reviewed By: kcc

Subscribers: mgorny, llvm-commits, #sanitizers

Tags: #sanitizers

Differential Revision: https://reviews.llvm.org/D37304

llvm-svn: 312183
2017-08-30 22:44:11 +00:00
George Karpenkov 10ab2ace13 Move libFuzzer to compiler_rt.
Resulting library binaries will be named libclang_rt.fuzzer*, and will
be placed in Clang toolchain, allowing redistribution.

Differential Revision: https://reviews.llvm.org/D36908

llvm-svn: 311407
2017-08-21 23:25:50 +00:00