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2020-04-03Merge release-20200323.0-68-g5818663 (automated)gVisor bot
2020-04-03Add FileDescriptionImpl for Unix sockets.Dean Deng
This change involves several steps: - Refactor the VFS1 unix socket implementation to share methods between VFS1 and VFS2 where possible. Re-implement the rest. - Override the default PRead, Read, PWrite, Write, Ioctl, Release methods in FileDescriptionDefaultImpl. - Add functions to create and initialize a new Dentry/Inode and FileDescription for a Unix socket file. Updates #1476 PiperOrigin-RevId: 304689796
2020-04-03Merge release-20200323.0-67-ga943096 (automated)gVisor bot
2020-04-03Ensure EOF is handled propertly during splice.Adin Scannell
PiperOrigin-RevId: 304684417
2020-04-03Merge release-20200323.0-63-gd151693 (automated)gVisor bot
2020-04-02Avoid sending a partial dirent when the Rreaddir response exceeds message limit.Uros Prestor
PiperOrigin-RevId: 304542967
2020-04-03Merge release-20200323.0-62-gdd3bc49 (automated)gVisor bot
2020-04-02Add NAME_MAX checks and update file timesFabricio Voznika
NAME_MAX should be enforced per filesystem implementation because other file systems may not have the same restriction. Gofer filesystem now keeps a reference to the kernel clock to avoid lookup in the Context on file access to update atime. Update access, modification, and status change times in tmpfs. Updates #1197, #1198. PiperOrigin-RevId: 304527148
2020-04-03Merge release-20200323.0-61-g4582a2f (automated)gVisor bot
2020-04-02Drop NDP messages with fragment extension headerGhanan Gowripalan
As per RFC 6980 section 5, nodes MUST silently ignore NDP messages if the packet carrying them include an IPv6 Fragmentation Header. Test: ipv6_test.TestNDPValidation PiperOrigin-RevId: 304519379
2020-04-03Merge release-20200323.0-60-g5b2396d (automated)gVisor bot
2020-04-02Fix typo in TODO comments.Dean Deng
PiperOrigin-RevId: 304508083
2020-04-03Merge release-20200323.0-59-gdbc507d (automated)gVisor bot
2020-04-02Add equivalents to FMODE_PREAD/PWRITE to VFS2.Jamie Liu
This is mostly required for PipeTest_OffsetCalls. The options are DenyPRead/PWrite rather than AllowPRead/PWrite since, in Linux terms, fs/open.c:do_dentry_open sets FMODE_PREAD|FMODE_PWRITE unconditionally (although it allows filesystem implementations of open to unset these flags), so they're set for most FDs; it's usually FDs created outside of open(2) that don't get them, e.g.: - Syscall-created pipes (fs/pipe.c:create_pipe_files => fs/file_table.c:alloc_file_pseudo) - Epoll instances (fs/eventpoll.c:do_epoll_create => fs/anon_inodes.c:anon_inode_getfile => alloc_file_pseudo) - Sockets (net/socket.c:sock_alloc_file => alloc_file_pseudo) This CL adds the flags to epoll instances; a subsequent CL reworks the VFS2 implementation of pipe FDs to be filesystem-independent and adds the flags there, and sockets aren't implemented yet. Updates #1035 PiperOrigin-RevId: 304506434
2020-04-02Merge release-20200323.0-58-gecc3d01 (automated)gVisor bot
2020-04-02Increment NDP message RX stats before validationGhanan Gowripalan
Tests: - ipv6_test.TestHopLimitValidation - ipv6_test.TestRouterAdvertValidation PiperOrigin-RevId: 304495723
2020-04-02Merge release-20200323.0-57-g30388ff (automated)gVisor bot
2020-04-02Rename files in //pkg/sync to better reflect what they contain.Jamie Liu
PiperOrigin-RevId: 304447031
2020-04-01Merge release-20200323.0-53-g1561ae3 (automated)gVisor bot
2020-04-01Deflake tcpip/stack:stack_x_testGhanan Gowripalan
Timeouts were increased to deflake pkg/tcpip/stack:stack_x_test tests that depend on timers. Some timeouts used previously were intended for tests that do not depend on timers, so this change updates those timeouts to give more time for a timer-based event to occur. This change also de-parallelizes non-subtests to reduce the number of active timers. Test: bazel test //pkg/tcpip/stack:stack_x_test --runs_per_test=500 PiperOrigin-RevId: 304287622
2020-04-01Pass configurable FilesystemType to tmpfs.Nicolas Lacasse
PiperOrigin-RevId: 304234086
2020-04-01Merge release-20200323.0-49-g4e6a1a5 (automated)gVisor bot
2020-04-01Automated rollback of changelist 303799678Adin Scannell
PiperOrigin-RevId: 304221302
2020-04-01Merge release-20200323.0-48-gdb79175 (automated)gVisor bot
2020-04-01Fix 386 build tagsMichael Pratt
The build tag for 32-bit x86 is 386, not i386. Updates #2298 PiperOrigin-RevId: 304206373
2020-04-01Merge release-20200323.0-47-gd01a8ca (automated)gVisor bot
2020-04-01Add FileDescription interface for socket files.Dean Deng
Refactor the existing socket interface to share methods between VFS1 and VFS2. The method signatures do not contain anything filesystem-related, so they don't need to be re-defined for VFS2. Updates #1476, #1478, #1484, #1485. PiperOrigin-RevId: 304184545
2020-04-01Merge release-20200323.0-46-g507f997 (automated)gVisor bot
2020-04-01Merge release-20200323.0-45-g840980a (automated)gVisor bot
2020-03-31Implement automated marshalling for slices of Marshallable types.Rahat Mahmood
PiperOrigin-RevId: 304119255
2020-04-01Merge release-20200323.0-44-gd25036a (automated)gVisor bot
2020-03-31Test receiving multicast packets over UDPEyal Soha
PiperOrigin-RevId: 304098611
2020-04-01Merge release-20200323.0-43-g639d94f (automated)gVisor bot
2020-03-31Add socket filesystem and global disconnected socket mount for VFS2.Dean Deng
A socket mount where anonymous sockets will reside is added to the VirtualFilesystem. Socketfs is built on top of kernfs. Updates #1476, #1478, #1484, #1485. PiperOrigin-RevId: 304095251
2020-03-31Merge release-20200323.0-41-gb6639f7 (automated)gVisor bot
2020-03-31Include original copyUp error in panic if cleanupUpper fails.Nicolas Lacasse
When copyUp fails, we attempt to clean up the upper filesystem by removing any files that have already been copied-up. If the cleanup fails, we panic because the "overlay filesystem is in an inconsistent state". This CL adds the original copy-up error to the panic information, to hopefully make it easier to track down how the overlay filesystem got into the inconsistent state. PiperOrigin-RevId: 304053370
2020-03-31Fix /proc/self/mounts and /proc/self/mountinfo in VFS2.Nicolas Lacasse
Some extra fields were added to the Mount type to expose necessary data to the proc filesystem. PiperOrigin-RevId: 304053361
2020-03-31Merge release-20200323.0-39-g9de982e (automated)gVisor bot
2020-03-31Allow passing root file type to tmpfs.Nicolas Lacasse
PiperOrigin-RevId: 304053357
2020-03-30Merge release-20200219.0-261-g32a1335 (automated)gVisor bot
2020-03-30Add AMD Rome CPUID flag.Michael Pratt
This flag is set on Rome CPUs, but it is not documented. PiperOrigin-RevId: 303825532
2020-03-30Merge release-20200219.0-259-g3fac85d (automated)gVisor bot
2020-03-30kvm: handle exit reasons even under EINTR.Adin Scannell
In the case of other signals (preemption), inject a normal bounce and defer the signal until the vCPU has been returned from guest mode. PiperOrigin-RevId: 303799678
2020-03-28Merge release-20200219.0-255-gf6e4daa (automated)gVisor bot
2020-03-27Merge release-20200219.0-253-g2a4aff7 (automated)gVisor bot
2020-03-27Add vfs.PathnameReachable().Jamie Liu
/proc/[pid]/mount* omit mounts whose mount point is outside the chroot, which is checked (indirectly) via __d_path(). PiperOrigin-RevId: 303434226
2020-03-27Add FilesystemType.Name method, and FilesystemType field to Filesystem struct.Nicolas Lacasse
Both have analogues in Linux: * struct file_system_type has a char *name field. * struct super_block keeps a pointer to the file_system_type. These fields are necessary to support the `filesystem type` field in /proc/[pid]/mountinfo. PiperOrigin-RevId: 303434063
2020-03-27Support Hop By Hop and Destination Options ext hdrGhanan Gowripalan
Enables handling the Hop by Hop and Destination Options extension headers, but options are not yet supported. All options will be treated as unknown and their respective action will be followed. Note, the stack does not yet support sending ICMPv6 error messages in response to options that cannot be handled/parsed. That will come in a later change (Issue #2211). Tests: - header_test.TestIPv6UnknownExtHdrOption - header_test.TestIPv6OptionsExtHdrIterErr - header_test.TestIPv6OptionsExtHdrIter - ipv6_test.TestReceiveIPv6ExtHdrs PiperOrigin-RevId: 303433085
2020-03-27Merge release-20200219.0-252-g76a7ace (automated)gVisor bot
2020-03-26Add BoundEndpointAt filesystem operation.Dean Deng
BoundEndpointAt() is needed to support Unix sockets bound at a file path, corresponding to BoundEndpoint() in VFS1. Updates #1476. PiperOrigin-RevId: 303258251
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