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2019-03-28Setting timestamps should trigger an inotify event.Nicolas Lacasse
PiperOrigin-RevId: 240850187 Change-Id: I1458581b771a1031e47bba439e480829794927b8
2019-03-28Clean up gofer handle caching.Jamie Liu
- Document fsutil.CachedFileObject.FD() requirements on access permissions, and change gofer.inodeFileState.FD() to honor them. Fixes #147. - Combine gofer.inodeFileState.readonly and gofer.inodeFileState.readthrough, and simplify handle caching logic. - Inline gofer.cachePolicy.cacheHandles into gofer.inodeFileState.setSharedHandles, because users with access to gofer.inodeFileState don't necessarily have access to the fs.Inode (predictably, this is a save/restore problem). Before this CL: $ docker run --runtime=runsc-d -v $(pwd)/gvisor/repro:/root/repro -it ubuntu bash root@34d51017ed67:/# /root/repro/runsc-b147 mmap: 0x7f3c01e45000 Segmentation fault After this CL: $ docker run --runtime=runsc-d -v $(pwd)/gvisor/repro:/root/repro -it ubuntu bash root@d3c3cb56bbf9:/# /root/repro/runsc-b147 mmap: 0x7f78987ec000 o PiperOrigin-RevId: 240818413 Change-Id: I49e1d4a81a0cb9177832b0a9f31a10da722a896b
2019-03-27Add rsslim field in /proc/pid/stat.Nicolas Lacasse
PiperOrigin-RevId: 240681675 Change-Id: Ib214106e303669fca2d5c744ed5c18e835775161
2019-03-27Add start time to /proc/<pid>/stat.Nicolas Lacasse
The start time is the number of clock ticks between the boot time and application start time. PiperOrigin-RevId: 240619475 Change-Id: Ic8bd7a73e36627ed563988864b0c551c052492a5
2019-03-26Implement memfd_create.Rahat Mahmood
Memfds are simply anonymous tmpfs files with no associated mounts. Also implementing file seals, which Linux only implements for memfds at the moment. PiperOrigin-RevId: 240450031 Change-Id: I31de78b950101ae8d7a13d0e93fe52d98ea06f2f
2019-03-22lstat should resolve the final path component if it ends in a slash.Nicolas Lacasse
PiperOrigin-RevId: 239896221 Change-Id: I0949981fe50c57131c5631cdeb10b225648575c0
2019-03-22Implement PTRACE_SEIZE, PTRACE_INTERRUPT, and PTRACE_LISTEN.Jamie Liu
PiperOrigin-RevId: 239803092 Change-Id: I42d612ed6a889e011e8474538958c6de90c6fcab
2019-03-21Add test for short recvmsg iovec length.Ian Gudger
PiperOrigin-RevId: 239718991 Change-Id: Idc78557a8e9bfdd3cb7d8ec4db708364652640a4
2019-03-21Test TCP sockets with MSG_TRUNC|MSG_PEEK.Ian Gudger
PiperOrigin-RevId: 239714368 Change-Id: I35860b880a1d8885eb8c2d4ff267caaf72d91088
2019-03-21Clear msghdr flags on successful recvmsg.Ian Gudger
.net sets these flags to -1 and then uses their result, especting it to be zero. Does not set actual flags (e.g. MSG_TRUNC), but setting to zero is more correct than what we did before. PiperOrigin-RevId: 239657951 Change-Id: I89c5f84bc9b94a2cd8ff84e8ecfea09e01142030
2019-03-19netstack: reduce MSS from SYN to account tcp optionsAndrei Vagin
See: https://tools.ietf.org/html/rfc6691#section-2 PiperOrigin-RevId: 239305632 Change-Id: Ie8eb912a43332e6490045dc95570709c5b81855e
2019-03-18Remove references to replaced child in Rename in ramfs/agentfsMichael Pratt
In the case of a rename replacing an existing destination inode, ramfs Rename failed to first remove the replaced inode. This caused: 1. A leak of a reference to the inode (making it live indefinitely). 2. For directories, a leak of the replaced directory's .. link to the parent. This would cause the parent's link count to incorrectly increase. (2) is much simpler to test than (1), so that's what I've done. agentfs has a similar bug with link count only, so the Dirent layer informs the Inode if this is a replacing rename. Fixes #133 PiperOrigin-RevId: 239105698 Change-Id: I4450af2462d8ae3339def812287213d2cbeebde0
2019-03-18Replace use of ucontext with ucontext_t.Kevin Krakauer
PiperOrigin-RevId: 239026571 Change-Id: Ifd01674855094f3abad497776f418023452033a1
2019-03-15Fix flaky RawPingAndSockets (and MultipleSocketsRecieve just in case).Kevin Krakauer
PiperOrigin-RevId: 238474202 Change-Id: Ib8c431e973e8cf1e1c8ee2f8c1978ddb8e88b0b8
2019-03-09Fix getsockopt(IP_MULTICAST_IF).Ian Gudger
getsockopt(IP_MULTICAST_IF) only supports struct in_addr. Also adds support for setsockopt(IP_MULTICAST_IF) with struct in_addr. PiperOrigin-RevId: 237620230 Change-Id: I75e7b5b3e08972164eb1906f43ddd67aedffc27c
2019-03-08Make IP_MULTICAST_LOOP and IP_MULTICAST_TTL allow setting int or char.Ian Gudger
This is the correct Linux behavior, and at least PHP depends on it. PiperOrigin-RevId: 237565639 Change-Id: I931af09c8ed99a842cf70d22bfe0b65e330c4137
2019-03-08Validate multicast addresses in multicast group operations.Ian Gudger
PiperOrigin-RevId: 237559843 Change-Id: I93a9d83a08cd3d49d5fc7fcad5b0710d0aa04aaa
2019-03-08Implement IP_MULTICAST_LOOP.Ian Gudger
IP_MULTICAST_LOOP controls whether or not multicast packets sent on the default route are looped back. In order to implement this switch, support for sending and looping back multicast packets on the default route had to be implemented. For now we only support IPv4 multicast. PiperOrigin-RevId: 237534603 Change-Id: I490ac7ff8e8ebef417c7eb049a919c29d156ac1c
2019-03-08Fix tests which fail in kokoroAndrei Vagin
* open_create_test_runsc_ptrace_shared doesn't expect the write access to / * exec_test_runsc_ptrace_shared could not find /usr/share/zoneinfo/ * clock_gettime_test_runsc_ptrace_shared didn't expect that a thread cpu time can be zero. * affinity_test_runsc_ptrace_shared expected minimum 3 cpus PiperOrigin-RevId: 237509429 Change-Id: I477937e5d2cdf3f8720836bfa972abd35d8220a3
2019-03-06Remove unsafe ScopedSigactionMichael Pratt
ScopedSigaction is not async-signal-safe, so it cannot be used after fork. Replace it with plain sigaction, which is safe. This is in a unique child anyways, so it doesn't need any cleanup. PiperOrigin-RevId: 237102411 Change-Id: I5c6ea373bbac67b9c4db204ceb1db62d338d9178
2019-03-05Priority-inheritance futex implementationFabricio Voznika
It is Implemented without the priority inheritance part given that gVisor defers scheduling decisions to Go runtime and doesn't have control over it. PiperOrigin-RevId: 236989545 Change-Id: I714c8ca0798743ecf3167b14ffeb5cd834302560
2019-03-05Add NoRandomSave to tests with correctness DisableSaveMichael Pratt
Tests using DisableSave because a portion of the test is *incompatible* with S/R clearly cannot use random S/R, as the saves may occur in the DisableSave critical section. Most such tests already have NoRandomSave. Add it to the rest. PiperOrigin-RevId: 236914708 Change-Id: Iee1cf044cfa7cb8d5aba21ddc130926218210c48
2019-03-04Make tmpfs respect MountNoATime now that fs.Handle is gone.Nicolas Lacasse
PiperOrigin-RevId: 236752802 Change-Id: I9e50600b2ae25d5f2ac632c4405a7a185bdc3c92
2019-03-01Add semctl(GETPID) syscallFabricio Voznika
Also added unimplemented notification for semctl(2) commands. PiperOrigin-RevId: 236340672 Change-Id: I0795e3bd2e6d41d7936fabb731884df426a42478
2019-02-28Fix flaky raw socket test.Kevin Krakauer
The specific issue was: - Test creates a raw ICMP socket - Test sends an ICMP echo request (aka ping request) to itself via loopback - Now two events race: - The raw socket recieves the ICMP echo request - Netstack receives the request and generates a reply (aka ping reply), which it sends back over loopback, where it is eventually received by the raw socket - The test was written to expect packets in a specific order, but they can come in any order. PiperOrigin-RevId: 236179066 Change-Id: I02c07c919d3d28093add3d18dd9196fbbc870813
2019-02-27Ping support via IPv4 raw sockets.Kevin Krakauer
Broadly, this change: * Enables sockets to be created via `socket(AF_INET, SOCK_RAW, IPPROTO_ICMP)`. * Passes the network-layer (IP) header up the stack to the transport endpoint, which can pass it up to the socket layer. This allows a raw socket to return the entire IP packet to users. * Adds functions to stack.TransportProtocol, stack.Stack, stack.transportDemuxer that enable incoming packets to be delivered to raw endpoints. New raw sockets of other protocols (not ICMP) just need to register with the stack. * Enables ping.endpoint to return IP headers when created via SOCK_RAW. PiperOrigin-RevId: 235993280 Change-Id: I60ed994f5ff18b2cbd79f063a7fdf15d093d845a
2019-02-25Handle invalid offset in sendfile(2)Fabricio Voznika
PiperOrigin-RevId: 235578698 Change-Id: I608ff5e25eac97f6e1bda058511c1f82b0e3b736
2019-02-20Implement Broadcast supportAmanda Tait
This change adds support for the SO_BROADCAST socket option in gVisor Netstack. This support includes getsockopt()/setsockopt() functionality for both UDP and TCP endpoints (the latter being a NOOP), dispatching broadcast messages up and down the stack, and route finding/creation for broadcast packets. Finally, a suite of tests have been implemented, exercising this functionality through the Linux syscall API. PiperOrigin-RevId: 234850781 Change-Id: If3e666666917d39f55083741c78314a06defb26c
2019-02-19netstack: Add SIOCGSTAMP support.Kevin Krakauer
Ping sometimes uses this instead of SO_TIMESTAMP. PiperOrigin-RevId: 234699590 Change-Id: Ibec9c34fa0d443a931557a2b1b1ecd83effe7765
2019-02-19Set rax to syscall number on SECCOMP_RET_TRAP.Jamie Liu
PiperOrigin-RevId: 234690475 Change-Id: I1cbfb5aecd4697a4a26ec8524354aa8656cc3ba1
2019-02-19Fix clone(CLONE_NEWUSER).Jamie Liu
- Use new user namespace for namespace creation checks. - Ensure userns is never nil since it's used by other namespaces. PiperOrigin-RevId: 234673175 Change-Id: I4b9d9d1e63ce4e24362089793961a996f7540cd9
2019-02-19Break /proc/[pid]/{uid,gid}_map's dependence on seqfile.Jamie Liu
In addition to simplifying the implementation, this fixes two bugs: - seqfile.NewSeqFile unconditionally creates an inode with mode 0444, but {uid,gid}_map have mode 0644. - idMapSeqFile.Write implements fs.FileOperations.Write ... but it doesn't implement any other fs.FileOperations methods and is never used as fs.FileOperations. idMapSeqFile.GetFile() => seqfile.SeqFile.GetFile() uses seqfile.seqFileOperations instead, which rejects all writes. PiperOrigin-RevId: 234638212 Change-Id: I4568f741ab07929273a009d7e468c8205a8541bc
2019-02-15Implement IP_MULTICAST_IF.Ian Gudger
This allows setting a default send interface for IPv4 multicast. IPv6 support will come later. PiperOrigin-RevId: 234251379 Change-Id: I65922341cd8b8880f690fae3eeb7ddfa47c8c173
2019-02-11gvisor: check that ptrace properly handles int3Andrei Vagin
PiperOrigin-RevId: 233516412 Change-Id: I7a0f1443de7eeebb5d8ad59e4759ca2e036a3c4d
2019-02-08Use socket address functions in unbound IPv4 UDP tests.Ian Gudger
Also switch to the correct casing style for local address variables. PiperOrigin-RevId: 233161128 Change-Id: Ibc4a10a5d3ab04c40907aa885e8237b255c65a79
2019-02-07Plumb IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP to netstack.Ian Gudger
Also includes a few fixes for IPv4 multicast support. IPv6 support is coming in a followup CL. PiperOrigin-RevId: 233008638 Change-Id: If7dae6222fef43fda48033f0292af77832d95e82
2019-02-07Implement /proc/net/unix.Rahat Mahmood
PiperOrigin-RevId: 232948478 Change-Id: Ib830121e5e79afaf5d38d17aeef5a1ef97913d23
2019-02-07Implement semctl(2) SETALL and GETALLFabricio Voznika
PiperOrigin-RevId: 232914984 Change-Id: Id2643d7ad8e986ca9be76d860788a71db2674cda
2019-02-06Internal change.Googler
PiperOrigin-RevId: 232776481 Change-Id: Ic19d4aa6322fef71621bad0e9fb8bdedf6694114
2019-02-04Deflake unlink test.Kevin Krakauer
Multiple tests were creating the same directory before removing it, making it possible for concurrent tests to fail because the directory already exists. PiperOrigin-RevId: 232389814 Change-Id: I35d409fff4b3fd864b30fee742cb587b14975c23
2019-01-31Remove license commentsMichael Pratt
Nothing reads them and they can simply get stale. Generated with: $ sed -i "s/licenses(\(.*\)).*/licenses(\1)/" **/BUILD PiperOrigin-RevId: 231818945 Change-Id: Ibc3f9838546b7e94f13f217060d31f4ada9d4bf0
2019-01-29Don't assume that stdout is always writable in PollTest.Nfds.Jamie Liu
stdout can be (and, in automated testing, often is) a host pipe or similar resource shared between multiple parallel tests, such that it can become transiently full during testing. PiperOrigin-RevId: 231413569 Change-Id: Id14991b5f71e53c894695899e65e1be4dd228cc6
2019-01-29Refactor out NewEventFD to a test utility.Jamie Liu
PiperOrigin-RevId: 231404512 Change-Id: I31efcc23a0c4a48ef6fbba3ca07415d79290f55c
2019-01-28Remove obsolete gVisor-specific test condition.Jamie Liu
PiperOrigin-RevId: 231274510 Change-Id: I8f65157dbe18dae1c6235147fc4d27e0c844c833
2019-01-28Convert outdated TODO to NOTE.Zhaozhong Ni
PiperOrigin-RevId: 231263193 Change-Id: Ib732c9639462f7994d473050495d88c2855434af
2019-01-25Deflake socket_stream_blocking tests.Jamie Liu
PiperOrigin-RevId: 231020482 Change-Id: Idd9168678b18d03aac473adcc40902e27e06d0a1
2019-01-25Remove O_CLOEXEC from socket test configurations where irrelevant.Jamie Liu
The implementation of O_CLOEXEC is orthogonal to every property tested by these tests; removing it significantly reduces the number of redundant tests we run. Also remove no-op calls to VecCat (calls with a single argument). PiperOrigin-RevId: 230959537 Change-Id: I83fe7db24e481ef67ca1f1992228af423f640b5c
2019-01-24Increase gofer coverage in testsFabricio Voznika
Lots of tests use /tmp for the tests. Force /tmp to be mounted over fsgofer instead of tmpfs. PiperOrigin-RevId: 230788985 Change-Id: Id6597ed88133232d15e808c48126bf77cb32673e
2019-01-24Explicitly std::move() returned std::vector<Mapping>.Jamie Liu
Otherwise, C++11-compliant compilers may select PosixErrorOr(const T&) as the relevant constructor, and fail because std::vector<Mapping> is not copyable (because Mapping is not copyable). This is a C++11 defect that is fixed in C++14 (and in C++11 mode for Clang, but not GCC). See DR 1579, http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1579. PiperOrigin-RevId: 230767401 Change-Id: I65f481f5188d91db6cbbbd65ed0a60bc55df3401
2019-01-23Fix cases of missing braces on ifMichael Pratt
PiperOrigin-RevId: 230641540 Change-Id: Icccc3cdeec191138940f0ecea0a29798359d2b1f
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