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2021-06-16Merge release-20210607.0-51-g63b4f6e29 (automated)gVisor bot
2021-06-16[syserror] Refactor linuxerr and error package.Zach Koopmans
Move Error struct to pkg/errors package for use in multiple places. Move linuxerr static definitions under pkg/errors/linuxerr. Add a lookup list for quick lookup of *errors.Error by errno. This is useful when converting syserror errors and unix.Errno/syscall.Errrno values to *errors.Error. Update benchmarks routines to include conversions. The below benchmarks show *errors.Error usage to be comparable to using unix.Errno. BenchmarkAssignUnix BenchmarkAssignUnix-32 787875022 1.284 ns/op BenchmarkAssignLinuxerr BenchmarkAssignLinuxerr-32 1000000000 1.209 ns/op BenchmarkAssignSyserror BenchmarkAssignSyserror-32 759269229 1.429 ns/op BenchmarkCompareUnix BenchmarkCompareUnix-32 1000000000 1.310 ns/op BenchmarkCompareLinuxerr BenchmarkCompareLinuxerr-32 1000000000 1.241 ns/op BenchmarkCompareSyserror BenchmarkCompareSyserror-32 147196165 8.248 ns/op BenchmarkSwitchUnix BenchmarkSwitchUnix-32 373233556 3.664 ns/op BenchmarkSwitchLinuxerr BenchmarkSwitchLinuxerr-32 476323929 3.294 ns/op BenchmarkSwitchSyserror BenchmarkSwitchSyserror-32 39293408 29.62 ns/op BenchmarkReturnUnix BenchmarkReturnUnix-32 1000000000 0.5042 ns/op BenchmarkReturnLinuxerr BenchmarkReturnLinuxerr-32 1000000000 0.8152 ns/op BenchmarkConvertUnixLinuxerr BenchmarkConvertUnixLinuxerr-32 739948875 1.547 ns/op BenchmarkConvertUnixLinuxerrZero BenchmarkConvertUnixLinuxerrZero-32 977733974 1.489 ns/op PiperOrigin-RevId: 379806801
2021-06-14Merge release-20210601.0-52-g5c9e84622 (automated)gVisor bot
2021-06-13Remove usermem dependency from marshalIan Lewis
Both marshal and usermem are depended on by many packages and a dependency on marshal can often create circular dependencies. marshal should consider adding internal dependencies carefully moving forward. Fixes #6160 PiperOrigin-RevId: 379199882
2021-06-11Merge release-20210601.0-47-g0892420c9 (automated)gVisor bot
2021-06-10Minor VFS2 xattr changes.Jamie Liu
- Allow the gofer client to use most xattr namespaces. As documented by the updated comment, this is consistent with e.g. Linux's FUSE client, and allows gofers to provide extended attributes from FUSE filesystems. - Make tmpfs' listxattr omit xattrs in the "trusted" namespace for non-privileged users. PiperOrigin-RevId: 378778854
2021-06-10Merge release-20210601.0-39-g9ede1a605 (automated)gVisor bot
2021-06-10[op] Move SignalInfo to abi/linux package.Ayush Ranjan
Fixes #214 PiperOrigin-RevId: 378680466
2021-06-10Merge release-20210601.0-34-ga51fcf22e (automated)gVisor bot
2021-06-10[op] Move SignalStack to abi/linux package.Ayush Ranjan
Updates #214 PiperOrigin-RevId: 378594929
2021-06-10Merge release-20210601.0-33-g8d87a9418 (automated)gVisor bot
2021-06-09[op] Move SignalAct to abi/linux package.Ayush Ranjan
There were also other duplicate definitions of the same struct that I have now removed. Updates #214 PiperOrigin-RevId: 378579954
2021-05-25Merge release-20210518.0-35-g3272400a4 (automated)gVisor bot
2021-05-25Merge pull request #6027 from liornm:fix-unused-flaggVisor bot
PiperOrigin-RevId: 375740504
2021-05-21Merge release-20210510.0-70-g2bed0bb09 (automated)gVisor bot
2021-05-20Send SIGPIPE for closed pipes.Ian Lewis
Fixes #5974 Updates #161 PiperOrigin-RevId: 375024740
2021-05-19Allow use of IFF_ONE_QUEUEliornm
Before fix, use of this flag causes an error. It affects applications like OpenVPN which sets this flag for legacy reasons. According to linux/if_tun.h "This flag has no real effect".
2021-05-12Merge release-20210503.0-36-g49eb3da98 (automated)gVisor bot
2021-05-11[syserror] Refactor abi/linux.ErrnoZach Koopmans
PiperOrigin-RevId: 373265454
2021-05-04Merge release-20210419.0-64-g689b369f5 (automated)gVisor bot
2021-05-04Remove uses of the binary package from the rest of the sentry.Rahat Mahmood
PiperOrigin-RevId: 372020696
2021-04-27Merge release-20210419.0-35-gf54d87b9e (automated)gVisor bot
2021-04-27Remove uses of the binary package from networking code.Rahat Mahmood
Co-Author: ayushranjan PiperOrigin-RevId: 370785009
2021-04-17Merge release-20210408.0-46-g0c3e8daf5 (automated)gVisor bot
2021-04-14Merge release-20210408.0-30-g5c1052b6b (automated)gVisor bot
2021-04-12Merge release-20210408.0-22-g982fc8b57 (automated)gVisor bot
2021-04-12[op] Use faster go_marshal methods in netfilter.Ayush Ranjan
Use MarshalUnsafe for packed types as it is faster than MarshalBytes. PiperOrigin-RevId: 368076368
2021-04-10Merge release-20210408.0-17-gd1edabdca (automated)gVisor bot
2021-04-09iptables: support postrouting hook and SNAT targetToshi Kikuchi
The current SNAT implementation has several limitations: - SNAT source port has to be specified. It is not optional. - SNAT source port range is not supported. - SNAT for UDP is a one-way translation. No response packets are handled (because conntrack doesn't support UDP currently). - SNAT and REDIRECT can't work on the same connection. Fixes #5489 PiperOrigin-RevId: 367750325
2021-04-03Merge release-20210322.0-38-g932c8abd0 (automated)gVisor bot
2021-04-02Implement cgroupfs.Rahat Mahmood
A skeleton implementation of cgroupfs. It supports trivial cpu and memory controllers with no support for hierarchies. PiperOrigin-RevId: 366561126
2021-04-01Merge release-20210322.0-33-gb2ea37401 (automated)gVisor bot
2021-04-01Internal changesBhasker Hariharan
PiperOrigin-RevId: 366344805
2021-03-29Merge release-20210322.0-29-g8a2f7e716 (automated)gVisor bot
2021-03-23Merge release-20210315.0-15-gacb4c6288 (automated)gVisor bot
2021-03-23Merge release-20210315.0-9-gc0bd71c5a (automated)gVisor bot
2021-03-22Merge release-20210315.0-6-g6bd2c6ce7 (automated)gVisor bot
2021-03-11Merge release-20210301.0-35-g1020ac83f (automated)gVisor bot
2021-03-11Move Arch specific code to arch specific files.Bhasker Hariharan
PiperOrigin-RevId: 362297474
2021-02-24Merge release-20210208.0-85-gacd516cfe (automated)gVisor bot
2021-02-24Add YAMA security module restrictions on ptrace(2).Dean Deng
Restrict ptrace(2) according to the default configurations of the YAMA security module (mode 1), which is a common default among various Linux distributions. The new access checks only permit the tracer to proceed if one of the following conditions is met: a) The tracer is already attached to the tracee. b) The target is a descendant of the tracer. c) The target has explicitly given permission to the tracer through the PR_SET_PTRACER prctl. d) The tracer has CAP_SYS_PTRACE. See security/yama/yama_lsm.c for more details. Note that these checks are added to CanTrace, which is checked for PTRACE_ATTACH as well as some other operations, e.g., checking a process' memory layout through /proc/[pid]/mem. Since this patch adds restrictions to ptrace, it may break compatibility for applications run by non-root users that, for instance, rely on being able to trace processes that are not descended from the tracer (e.g., `gdb -p`). YAMA restrictions can be turned off by setting /proc/sys/kernel/yama/ptrace_scope to 0, or exceptions can be made on a per-process basis with the PR_SET_PTRACER prctl. Reported-by: syzbot+622822d8bca08c99e8c8@syzkaller.appspotmail.com PiperOrigin-RevId: 359237723
2021-02-09Merge release-20210201.0-57-gcfa4633c3 (automated)gVisor bot
2021-02-08[go-marshal] Add dynamic tag in go_marshal.Ayush Ranjan
This makes it easier to implement dynamically sized types in go-marshal. You really only need to implement MarshalBytes, UnmarshalBytes and SizeBytes to implement the entire interface. By using the `dynamic` tag, the autogenerator will generate the rest of the methods for us. This change also simplifies how KernelIPTGetEntries implements Marshallable using the newly added utility. PiperOrigin-RevId: 356397114
2021-01-29Merge release-20210125.0-31-g0a52b6479 (automated)gVisor bot
2021-01-29- Add more comments for the TCP_INFO struct fields.Nayana Bidari
PiperOrigin-RevId: 354595623
2021-01-28Merge release-20210112.0-104-g99988e45e (automated)gVisor bot
2021-01-27Add support for more fields in netstack for TCP_INFONayana Bidari
This CL adds support for the following fields: - RTT, RTTVar, RTO - send congestion window (sndCwnd) and send slow start threshold (sndSsthresh) - congestion control state(CaState) - ReorderSeen PiperOrigin-RevId: 354195361
2021-01-22Merge release-20210112.0-75-gf52f0101b (automated)gVisor bot
2021-01-22Implement F_GETLK fcntl.Dean Deng
Fixes #5113. PiperOrigin-RevId: 353313374
2021-01-12Merge release-20201216.0-87-g4e03e8754 (automated)gVisor bot
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