Commit Graph

26 Commits

Author SHA1 Message Date
Wiktor Garbacz
8562306c97 Add CloseAllFDsExcept test.
Move VecStringToCharPtrArr before fork, so that it cannot deadlock when other thread holds allocation lock.

PiperOrigin-RevId: 414661912
Change-Id: Ie8aa5c36693e6f86c69d67a1da51b7e7ff1ec30b
2021-12-07 02:23:23 -08:00
Sandboxed API Team
dae91ff082 Fix Symbolize* tests.
PiperOrigin-RevId: 390372065
Change-Id: I1ddc9dd9238795eb0674e04c20a5c91a68582027
2021-08-12 08:03:52 -07:00
Christian Blichmann
dbaf95c724 Move utility code into sandboxed_api/util
This change should make it less confusing where utility code comes from.
Having it in two places made sense when we were debating whether to publish
Sandbox2 separately, but not any longer.

Follow-up changes will move `sandbox2/util.h` and rename the remaining
`sandbox2/util` folder.

PiperOrigin-RevId: 351601640
Change-Id: I6256845261f610e590c25e2c59851cc51da2d778
2021-01-13 09:25:52 -08:00
Anton D. Kachalov
d0c8224e61 Add support for ARM32 (hard float target)
This change enables support for 32-bit ARM, as used by embedded controllers and older phones.
Note: This does not support 32-bit sandboxees on AArch64. Both sandboxee and host code must have the same bitness.
PiperOrigin-RevId: 347835193
Change-Id: I6395882677530f9862f118d2dc10230a61049836
2020-12-16 09:18:25 -08:00
Anton D. Kachalov
0e8d16e011 Enable shared libraries build and cross-compilation
This allows resource-constrained environments to benefit from the
space savings of dynamic linking. This is not meant to be used in
the general case.

PiperOrigin-RevId: 347398828
Change-Id: Ia634959148a31159878f48c44255dd733424a2b8
2020-12-14 09:16:14 -08:00
Wiktor Garbacz
742fafa433 Prefixed (unique) names for executables in cmake
PiperOrigin-RevId: 347335966
Change-Id: Ic8cc22b882fa489d37b636406a1a5fe51745d808
2020-12-14 01:13:31 -08:00
Christian Blichmann
2a9320dbac Update/simplify linker flags for testcases
- Bazel: Use "incompatible" flag to fix fully static linking. The flag will
  become the default in Bazel 4.0.
- Bazel: Deduplicate features into `FULLY_STATIC_FEATURES` variable
- CMake: Remove the testcase properties. `sapi::base` already sets
  `POSITION_INDEPENDENT_CODE`. Note that `-pie` is incompatible with `-static`
  and `-static-pie` requires GCC 8 and GLIBC 2.27.

PiperOrigin-RevId: 346952478
Change-Id: I7a317c90a3bec9691b13df1a00e3fddf4481df4d
2020-12-11 01:12:05 -08:00
Christian Blichmann
2869e3f598 Fix missing argument in call to open() in namespace test
Calling `open()` with `O_CREAT` requires 3 arguments.

PiperOrigin-RevId: 346739861
Change-Id: I38167e9184f4755e48307eaa674277069bd4ccf8
2020-12-10 02:19:21 -08:00
Sandboxed API Team
3323ddc129 Permit sandboxee's bpf() to fail
The default policy causes immediate termination of a sandboxee that
calls `bpf`(2).

This does not allow for try-call use of `bpf()` to test for optional
features.

To support such try-call use cases, sandboxes would like to say:

```
  sandbox2::PolicyBuilder builder;
  builder.BlockSyscallWithErrno(__NR_bpf, EPERM);
```

but this doesn't work because the default policy unconditionally treats
`bpf()` as a sandbox violation.

Remove the bpf violation check from the policy if `bpf()` is explicitly
blocked with an errno.

PiperOrigin-RevId: 345239389
Change-Id: I7fcfd3a938c610c8679edf8e1fa0238b32cc9db4
2020-12-02 08:38:32 -08:00
Christian Blichmann
6a1e4b881c Introduce config header to centralize CPU architecture checks
This allows us to remove some uses of macros.

Related changes:
- Make it clear that we support hosting sandboxed binaries from 64-bit
  processes only. CPU architectures are x86-64 and POWER64 (little endian).
- Introduced CPU architecture macros, abstracting away compiler specifics

PiperOrigin-RevId: 330918134
Change-Id: Ife7ad5f14723eec9f68055127b0583b8aecd38dd
2020-09-10 05:48:00 -07:00
Christian Blichmann
fdf0483ca0 Migrate to open-source absl::StatusOr<>
This removes our own fork of `absl::StatusOr<>`. Sandboxed API still includes
a custom matcher for Googletest, as that is not open source yet. For
compatibility, the `statusor.h` header is still retained and now aliases
`sapi::StatusOr<>` to `absl::StatusOr<>`.

PiperOrigin-RevId: 329916309
Change-Id: I0544b73a9e312dce499bc4128c28457e04ab9929
2020-09-03 07:40:48 -07:00
Sandboxed API Team
228f3e7ed1 Migrate usage of StatusOr::operator bool to StautsOr::ok.
PiperOrigin-RevId: 319931897
Change-Id: I31b4bb71c7eeaf6687a499248bbfbb26c78b94ff
2020-07-07 00:14:07 -07:00
Christian Blichmann
496672c333 Cleanup calls to sapi::StatusOr<>::ValueOrDie()
PiperOrigin-RevId: 304398197
Change-Id: I85d09457a5e27f65c0792fe93aebbd8219801ef6
2020-04-02 07:42:45 -07:00
Wiktor Garbacz
5b1119aa6d Internal change
PiperOrigin-RevId: 295579669
Change-Id: I2488a87a78cf76f0d4ddf73d115e443bd801e420
2020-02-17 06:54:52 -08:00
Christian Blichmann
441201884a Update license header with recommended best practices
PiperOrigin-RevId: 290250533
Change-Id: Ic34b253446463cf971a055b70a242df93a598ee3
2020-01-17 05:05:29 -08:00
Wiktor Garbacz
1673ade4e4 Remount chroot as read-only
PiperOrigin-RevId: 280394655
Change-Id: I1490b7dfbbca3d91f5efb4dd5800397c9da57da8
2019-11-14 03:51:26 -08:00
Christian Blichmann
b7cbc36071 Follow-up to 3c51348 fixing linker issues with gflags and glog
The temporary solution for binaries/tests that fully statically linked is to
link against `gflags` using `-Wl,--whole-archive`. This will no longer be
necessary, once Abseil ships with logging. Then we can (finally) use Abseil
flags and use a logging library that does not depend on a different flags
library.

PiperOrigin-RevId: 260705702
Change-Id: I8562faaff59f9c3e0e1d331186d2806d387438fb
2019-07-30 06:48:38 -07:00
Wiktor Garbacz
d170bc3c80 Deflake namespace_test
When fetching exit status only lower 8-bits will be read.
Thus if getpid()&0xff == 0 the test can fail.

PiperOrigin-RevId: 257163766
Change-Id: I690c645fde33d1205578fd8873c5fc2974352ada
2019-07-09 04:11:07 -07:00
Christian Blichmann
0c4a803527 Workaround for Bazel issue #8672 (broken fully_static_link)
This is tracked at
https://github.com/bazelbuild/bazel/issues/8672

and should only affect the tests for now.

PiperOrigin-RevId: 254943708
Change-Id: Iee18a3b8c1b570c7d04d09d533ecff33c3de7d57
2019-06-25 04:32:17 -07:00
Wiktor Garbacz
42761c8b72 Add a resource starvation test
PiperOrigin-RevId: 248334209
Change-Id: Iff0f0b3024c67a767c429a547695cc48a2d02a30
2019-05-15 08:04:58 -07:00
Christian Blichmann
7800fd7402 Disable compiler warnings for consistency with internal settings.
PiperOrigin-RevId: 247405215
Change-Id: I236170f7b47d9ecd32324db907ef7afc2e797d9a
2019-05-09 05:21:34 -07:00
Christian Blichmann
6bfa83befe CMake support for Sandbox2
- Add a superbuild in cmake/SuperBuild.cmake that downloads and builds
  dependencies
- Builds for sandbox2/ and a its tests
- Helper CMake function to strip proto paths
- Module to find libcap
- Custom build for libunwind that wraps its symbols
- Fix environment so that CTest executes tests similar to Bazel
- Filewrapper functionality, like Bazel's cc_embed_data()
- Build forkserver with embedded binary
- Enable ASM language so that libunwind builds correctly
- Allow glog target to propagate transitively (to propagate its include dirs)

Signed-off-by: Christian Blichmann <cblichmann@google.com>
2019-05-06 14:03:29 +02:00
Christian Blichmann
feba2c35d7 Apply special whole-archive linker options only where necessary
PiperOrigin-RevId: 245038294
Change-Id: I99367e7c982a340a88acf730619a467d34d53203
2019-04-24 07:07:14 -07:00
Christian Blichmann
f04be9276f Formatting fixes and include file hygiene.
PiperOrigin-RevId: 240346890
Change-Id: I1a9617f10a62a848b6314a6196512e016ae02643
2019-03-26 07:54:21 -07:00
Sandboxed API Team
c8a4131e74 Test that isatty is being allowed by AllowTCGETS.
PiperOrigin-RevId: 239370864
Change-Id: Id98f3e5d8dceedb3cfbcd23b980e828f576d3e8d
2019-03-20 04:11:21 -07:00
Christian Blichmann
177b969e8c
Sandboxed API OSS release.
PiperOrigin-RevId: 238996664
Change-Id: I9646527e2be68ee0b6b371572b7aafe967102e57

Signed-off-by: Christian Blichmann <cblichmann@google.com>
2019-03-18 19:00:48 +01:00