Commit Graph

1145 Commits

Author SHA1 Message Date
Sandboxed API Team
f086c39f42 Update clients of PolicyBuilder to support architectures other than x86_64.
PiperOrigin-RevId: 500181306
Change-Id: Ibf3e5e3ac6214394f2d9ab10cf30de6d8396988d
2023-01-06 14:31:59 -08:00
Sandboxed API Team
1871b173c4 Add __NR_faccessat2 to the list of syscalls allowed by AllowAccess().
PiperOrigin-RevId: 500105471
Change-Id: Ic43c608a511617ba9ca8c2cba440cd709ae80a19
2023-01-06 00:16:46 -08:00
Sandboxed API Team
756176f206 On new process, check for the clone3 syscall.
PiperOrigin-RevId: 499918752
Change-Id: I7279e76593976c224a15be901834bf6225aebe85
2023-01-05 10:02:09 -08:00
Sandboxed API Team
90ee0a7464 Update clients of PolicyBuilder to support architectures other than x86_64.
PiperOrigin-RevId: 499424110
Change-Id: I6e7ed7436db84a65b1920f78dfc00cb2f9894b3c
2023-01-04 01:44:20 -08:00
Wiktor Garbacz
00d42577d5 Use CLONE_VM for starting the global forkserver
PiperOrigin-RevId: 499192311
Change-Id: I054385e9cab5e4987b0f34ab3b763244356405c2
2023-01-03 05:36:40 -08:00
Wiktor Garbacz
2d52191c24 Define PR_SET_VMA* if undefined
PiperOrigin-RevId: 497161397
Change-Id: I65fc11a7ccf34ffe225a03a0444275145fa43b4f
2022-12-22 07:39:44 -08:00
Wiktor Garbacz
fc721da2b9 More precise sycall_defs
PiperOrigin-RevId: 497137823
Change-Id: I374054659ce94e6b53819b999d9ed25df18b4ebd
2022-12-22 05:00:48 -08:00
Wiktor Garbacz
89a8f35f0e Use new helpers in policy_test
PiperOrigin-RevId: 496904765
Change-Id: Id2e4a901ed29c780542423608c55d01ef19eee9a
2022-12-21 06:17:07 -08:00
Wiktor Garbacz
7625c3dd24 Use AllowDup helper in AddNetworkProxyPolicy
PiperOrigin-RevId: 496898835
Change-Id: I76968c5c9b25a9e41865b3fad20463661195f581
2022-12-21 05:36:28 -08:00
Sandboxed API Team
aff27f4559 Update PolicyBuilder to include wrappers for more syscall families that differ between platforms.
New wrappers:

- `AllowEpollWait` (`epoll_wait`, `epoll_pwait`, `epoll_pwait2`)
- `AllowInotifyInit` (`inotify_init`, `inotify_init1`)
- `AllowSelect` (`select`, `pselect6`)
- `AllowDup` (`dup`, `dup2`, `dup3`)
- `AllowPipe` (`pipe`, `pipe2`)
- `AllowChmod` (`chmod`, `fchmod`, `fchmodat`)
- `AllowChown` (`chown`, `lchown`, `fchown`, `fchownat`)
- `AllowReadlink` (`readlink`, `readlinkat`)
- `AllowLink` (`link`, `linkat`)
- `AllowSymlink` (`symlink`, `symlinkat`)
- `AllowMkdir` (`mkdir`, `mkdirat`)
- `AllowUtime` (`utime`, `utimes`, `futimens`, `utimensat`)
- `AllowAlarm` (`alarm`, `setitimer`)
- `AllowGetPGIDs` (`getpgid`, `getpgrp`)
- `AllowPoll` (`poll`, `ppoll`)

Updated wrappers:

- `AllowOpen` now includes `creat`. `openat` already grants the ability to create files, and is the designated replacement for `creat` on newer platforms.
- `AllowStat` now includes `fstatfs` and `fstatfs64`. The comment already claimed that these syscalls were included; I believe they were omitted by accident.
- `AllowUnlink` now includes `rmdir`. `unlinkat` already grants the ability to remove empty directories, and is the designated replacement for `rmdir` on newer platforms.

PiperOrigin-RevId: 495045432
Change-Id: I41eccb74fda250b27586b6b7fe4c480332e48846
2022-12-13 09:32:17 -08:00
Wiktor Garbacz
5b3450ac8d Internal change
PiperOrigin-RevId: 494153465
Change-Id: Ice7f3e7b95f8de1348ccb281bbfa6fc7164b3353
2022-12-09 06:14:19 -08:00
Wiktor Garbacz
ee58a410d9 Handle S2 unwinding by trapping ptrace
PiperOrigin-RevId: 491893277
Change-Id: I427a2e485173c73fffead43e29511460c58c4f04
2022-11-30 06:00:29 -08:00
Wiktor Garbacz
bd5769d40a Use SyscallTrap in NetworkProxy
PiperOrigin-RevId: 491891500
Change-Id: I2e70dbc44aa264247c217ca88a4de1c0867383fd
2022-11-30 05:47:44 -08:00
Wiktor Garbacz
5bf9b1aef0 Introduce SyscallTrap helper class
PiperOrigin-RevId: 491887840
Change-Id: I5b189969da33e042a3ba38fe14025a758103f160
2022-11-30 05:21:12 -08:00
Wiktor Garbacz
77c80b7213 unwind: Skip Mapping Symbols on ARM
ARM documentation for Mapping Symbols:
https://developer.arm.com/documentation/dui0803/a/Accessing-and-managing-symbols-with-armlink/About-mapping-symbols

PiperOrigin-RevId: 491836684
Change-Id: I2e259e66f2253d80902aa763f2637f3f6fdea414
2022-11-30 00:16:37 -08:00
Wiktor Garbacz
755f29b35e Correct unwinding stop condition
On successful completion, `unw_step()` returns a positive value
  if the updated cursor refers to a valid stack frame,
  or `0` if the previous stack frame was the last frame in the
  chain. On error, the negative value of one of the error-codes
  below is returned.

PiperOrigin-RevId: 491588164
Change-Id: Ie361023ef69eed6c895856832a8208f2791f644d
2022-11-29 03:24:31 -08:00
Christian Blichmann
92a8247777 Bazel: Add full support for virtual includes
This change adds support for using the `includes`, `include_prefix` and
`strip_include_prefix` attributes of the `cc_library()` rule. Without it,
the libtooling based header generator will not be able to find all
necessary includes as it is much stricter than the current libclang based
one in that regard.

PiperOrigin-RevId: 491574088
Change-Id: Icb9f7d2719472ee1afa5df85b185c527a3c64994
2022-11-29 02:17:48 -08:00
Wiktor Garbacz
e5971312eb Internal change
PiperOrigin-RevId: 491554561
Change-Id: Ic83cb27aea18da4a86486faff5e868716d9eac90
2022-11-29 00:48:47 -08:00
Sandboxed API Team
11b89c0317 Internal compatible_with change
PiperOrigin-RevId: 491371995
Change-Id: I3f0430d6678992642557320a8fa3cf738a7c5fab
2022-11-28 09:55:57 -08:00
Christian Blichmann
d31e691705 clang_generator: Implement limit_scan_depth feature
PiperOrigin-RevId: 490517864
Change-Id: I93c5df370501f9af745b53791ae8ac2a18220ff9
2022-11-23 09:09:50 -08:00
Christian Blichmann
e223ef4790 clang_generator: Skip Abseil internal functions
PiperOrigin-RevId: 490513265
Change-Id: I7ddcdf612772167756039cb8f59b5b3aa60ed2ef
2022-11-23 08:47:47 -08:00
Christian Blichmann
cded8655d3 clang_generator: Skip dependent types
PiperOrigin-RevId: 490508865
Change-Id: Ic1d49a4abfde4cd02f08dd24c3f7a20058ef4965
2022-11-23 08:32:19 -08:00
Christian Blichmann
d7fe6cd334 clang_generator: Use fully qualified names
Use locally unqualified types to filter ordered type declarations in
`TypeCollector::GetTypeDeclarations()`. This is necessary, as
`clang::TypeName::getFullyQualifiedName()` and
`TypeDecl::getQualifiedNameAsString()` have different ideas which
qualifiers belong to the name. The former works on `QualType`s, while
the latter deals with the declaration directly. This change decays a
`TypeDecl` into its locally unqualified `QualType`.

PiperOrigin-RevId: 490500091
Change-Id: Ie2f4eece4e673f8b06ab6661d7b6611daf34fba9
2022-11-23 07:54:48 -08:00
Christian Blichmann
37ca6d0fc6 clang_generator: Access type collector/function via accessors
PiperOrigin-RevId: 490476261
Change-Id: Icbd51d3792c33dcfb185ec0514118a095135b3f6
2022-11-23 05:21:25 -08:00
Christian Blichmann
13c5b564b6 clang_generator: Collect function types directly
Do not try to peel off all layers of pointers/references when collecting
types, recursion works well here. Also collect the function type itself,
even if it is a pointer or if the function was the underlying type of a
typedef.

PiperOrigin-RevId: 490475937
Change-Id: I13cb3d9d3de7d25b9e627f43112c46758c7e6a22
2022-11-23 05:19:10 -08:00
Sandboxed API Team
3155cb0a67 Fix format string and/or arguments to match.
PiperOrigin-RevId: 488378036
Change-Id: I1e3dfa9a734f4c682f1b388f6ba54bf89bd98920
2022-11-14 08:51:06 -08:00
Christian Blichmann
67bc67bbef clang_generator: Handle inter-type dependencies better
This change changes the emitter to work on `clang::TypeDecl`s instead of
`clang::QualType`s, as the latter only describe complete definitions. This
allows us to better deal with situations where we would otherwise have a kind
of circular type dependencies: For example, a `typedef` that depends on a
`struct` which in turn has a member that references the typedef.
For this to work, we now also record the actual source order of declarations,
similar to what the libclang based header generator does.

Also add some more tests for the newly covered cases.

PiperOrigin-RevId: 488370914
Change-Id: I2d1baa863fb12d1801bf11a20f3f88df7fde3129
2022-11-14 08:19:13 -08:00
Liam Miller-Cushon
b626bf40da Migrate from cfg = "host" to cfg = "exec"
PiperOrigin-RevId: 488355973
Change-Id: I965bbef502e26b0f5908f92ebc614aef31c42659
2022-11-14 07:08:08 -08:00
Christian Blichmann
1ae04ac332 clang_generator: Use fully-qualified names, emit in source order
When generating headers from libraries that export functions as `extern "C"`
but still use namespaces (C-compatible C++ libraries), we want to generate
a Sandboxed API that includes fully-qualified namespace names as well.

In addition, we want the generated API to have the same source order as the
original library. Not only is this less surprising when reading the generated
code, it's also more accurate. Previously, we'd bundle all definitions in a
namespace and sort those alphabetically, but for code that relies on symbols
from another namespace to be available, generation will fail:

```c++
namespace zzz {
using entity_count_t = uint64_t;
}  // namespace zzz
namespace sheep_counter {
using sheep_count_t = :💤:entity_count_t;
extern "C" void IncreaseSheepCounter(sheep_count_t increment);
}  // namespace sheep_counter
```

PiperOrigin-RevId: 486586024
Change-Id: I419c9db8e9cb5b904364b353e2dc3d7f1030fab3
2022-11-07 00:37:53 -08:00
Christian Blichmann
ce26b55e26 clang_generator: Turn fatal error on struc-by-value into warning
An `absl::StatusCode` of `kCancelled` now indicates warnings inside the emitter.

PiperOrigin-RevId: 485851898
Change-Id: I10a57cbc1b6c2d4b708c3c19aa0fa71451845a22
2022-11-03 06:02:32 -07:00
Rebecca Chen
3abfefaf3b Silence some pytype errors.
PiperOrigin-RevId: 485526322
Change-Id: I55541b3f7c2f8e89efef0d37bbd2ef4e330bd3e7
2022-11-02 01:08:49 -07:00
Christian Blichmann
4b56d5606d clang_generator: Fail header generation with struct-by-value
The libclang based header generator disallows functions that pass structs (or
more generally "record types") by value. While this can be implemented, the
such functions as emitted by the clang_generator never worked.

We should revisit this when we implement support for passing 128-bit integer
types directly, as those will work the same as small structs.

PiperOrigin-RevId: 485522603
Change-Id: Iae8284720da52496d7a48fe3ca3c3c8605e6d19d
2022-11-02 00:43:26 -07:00
Christian Blichmann
7e0f72e445 clang_generator: Refactor frontend test utilities
This makes it easier to write tests with expected compilation/parsing failures.

PiperOrigin-RevId: 485331205
Change-Id: Ia545934849d38bded9320537c71e970fb4730cb6
2022-11-01 09:00:34 -07:00
Christian Blichmann
c3889ce379 Fix command-line handling in sandbox2tool
This addresses #164.

PiperOrigin-RevId: 483675926
Change-Id: I1461c9bb2c3865d86cd99f9285e51ce20ac460b8
2022-10-25 08:05:23 -07:00
Christian Blichmann
6222ffe04f contrib: More fixes for flags and logging migration
PiperOrigin-RevId: 483656661
Change-Id: I5b8783de3f9f48056779fcce832a5b23df74cb72
2022-10-25 06:33:42 -07:00
Christian Blichmann
6fbfb8f9bd Remove Tag constructor, add standard comment for absl::WrapUnique(new T)
PiperOrigin-RevId: 483654433
Change-Id: I16b058a6b186f764f45bc5540f3f49d5a294ddeb
2022-10-25 06:20:51 -07:00
Christian Blichmann
8d04efa62d contrib: Replace uses of CHECK_NOTNULL
Abseil's standard name for this is `ABSL_DIE_IF_NULL`.

PiperOrigin-RevId: 483648443
Change-Id: I9d6826443be72b30f71c18972436fa5f9c05048a
2022-10-25 05:50:59 -07:00
Wiktor Garbacz
3b95bec700 Remove unused SAPI_INTERNAL_UNREACHABLE
PiperOrigin-RevId: 483393540
Change-Id: I315da44529fb2c0d8b6b6347275fdf66c5aa4712
2022-10-24 08:48:35 -07:00
Christian Blichmann
4c87556901 Use Abseil's log/flags instead of glog/gflags
Follow-up changes might be required to fully fix up the contrib sandboxes.

PiperOrigin-RevId: 482475998
Change-Id: Iff631eb838a024b2f047a1be61bb27e35a8ff2f4
2022-10-20 06:48:51 -07:00
Benjamin Kramer
7dca070083 Integrate LLVM at llvm/llvm-project@06da9b94ae
Updates LLVM usage to match
[06da9b94ae37](https://github.com/llvm/llvm-project/commit/06da9b94ae37)

PiperOrigin-RevId: 481181270
Change-Id: I8c015fbd95d7f5f543d4eed12ed5d4efc11ef9c3
2022-10-14 10:42:23 -07:00
Sandboxed API Team
882e474032 Bazel: Add copts attribute to macros which use _default_copts where necessary
Propagate `_default_copts` to rules which use them.

PiperOrigin-RevId: 480871797
Change-Id: I8be371d2db5db103e6ab6ef31a181f2f818a1fc2
2022-10-13 06:01:26 -07:00
Christian Blichmann
79b6784b82 #Cleanup: Consistently use std::make_unique
PiperOrigin-RevId: 480597371
Change-Id: I145586382ad7a7694384cc672986132376a47465
2022-10-12 05:23:42 -07:00
Wiktor Garbacz
cb8efdc270 Sandbox2: Graciously handle mapping over Comms/Exec fds
Try to move the affected FDs transparently to avoid conflict.

PiperOrigin-RevId: 480105375
Change-Id: I0cd093fce120505d1cd4a1d081b3c0e63bf0210a
2022-10-10 09:39:01 -07:00
Christian Blichmann
b9c2830ebc Use new sandbox2::Comms ctor for default connection params
This change allows Sandbox2 to change how the default FD for comms is chosen.

PiperOrigin-RevId: 479526309
Change-Id: I69add85a244bc0385eaa164ab0ea3b036503c6d3
2022-10-07 02:08:20 -07:00
Sandboxed API Team
859e282d3b Use new sandbox2::Comms ctor for default connection params
This change allows Sandbox2 to change how the default FD for comms is chosen.

PiperOrigin-RevId: 479521810
Change-Id: Ia2ca1df95eb21783207ffb625c924790de20480d
2022-10-07 01:44:46 -07:00
Wiktor Garbacz
3198ff06d3 Explicit Comms constructor with default params
This is to abstract the FD number away, so that we can change the way the FD number is chosen/communicated.

PiperOrigin-RevId: 479282707
Change-Id: Ic6726bcd0a17e97bde60804476ecbca2ffbf6525
2022-10-06 04:56:18 -07:00
Christian Blichmann
5b61445de9 Internal change
We have removed an internal-only sandbox mechanism that has been deprecated
for years. Some formatting/include changes may leak into the OSS version.

PiperOrigin-RevId: 475230500
Change-Id: Ib4efdf3282529ea50e8302e5ef7acfdd7d4c68e5
2022-09-19 01:58:32 -07:00
Wiktor Garbacz
d2c8c70d8e Internal change
PiperOrigin-RevId: 475224729
Change-Id: Id7c05c7542c44f58e7f4027c6932acd42f3a7857
2022-09-19 01:17:22 -07:00
Christian Blichmann
4d24c4c01b Update to latest Abseil and Protobuf
This is the first in a series of changes that will remove our custom logging
implementation in favor of the newly released Abseil log library.

PiperOrigin-RevId: 475221012
Change-Id: I5d21ad104049dc70abe2a8d49659128e9cf3e9c0
2022-09-19 00:52:35 -07:00
Christian Blichmann
8de530036f Internal change.
Some includes may leak to OSS.

PiperOrigin-RevId: 474748898
Change-Id: Iff9dc4f91af211572ff4bbcf57330b36d7a957ab
2022-09-16 00:37:02 -07:00