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2020-06-03Merge release-20200522.0-72-gd3a8bffe (automated)gVisor bot
2020-06-03Pass PacketBuffer as pointer.Ting-Yu Wang
Historically we've been passing PacketBuffer by shallow copying through out the stack. Right now, this is only correct as the caller would not use PacketBuffer after passing into the next layer in netstack. With new buffer management effort in gVisor/netstack, PacketBuffer will own a Buffer (to be added). Internally, both PacketBuffer and Buffer may have pointers and shallow copying shouldn't be used. Updates #2404. PiperOrigin-RevId: 314610879
2020-06-03Merge release-20200522.0-70-g7da69fe9 (automated)gVisor bot
2020-06-03Fix data race on f.offset.Nicolas Lacasse
We must hold f.mu to write f.offset. PiperOrigin-RevId: 314582968
2020-06-03Merge release-20200522.0-69-gb2e2a081 (automated)gVisor bot
2020-06-03Add metric for startup watchdog timeoutMichael Pratt
PiperOrigin-RevId: 314570894
2020-06-03Merge release-20200522.0-67-gc8e79683 (automated)gVisor bot
2020-06-03Take Mount reference in VFS.connectLocked.Jamie Liu
Updates #179 PiperOrigin-RevId: 314563830
2020-06-03Merge release-20200522.0-65-ge6334e81 (automated)gVisor bot
2020-06-02Check that two sockets with different types can't be connected to each otherAndrei Vagin
PiperOrigin-RevId: 314450191
2020-06-02Merge pull request #2855 from ridwanmsharif:ridwanmsharif/fuse-doc-editgVisor bot
PiperOrigin-RevId: 314449030
2020-06-02Merge release-20200522.0-62-g43279c67 (automated)gVisor bot
2020-06-02Fix typosMichael Pratt
PiperOrigin-RevId: 314415253
2020-06-02Add some detail to milestone #1Ridwan Sharif
This change adds more information about what needs to be done to implement `/dev/fuse`
2020-06-02Merge release-20200522.0-57-g050d8e6e (automated)gVisor bot
2020-06-01Add inotify events for extended attributes and splice.Dean Deng
Splice, setxattr and removexattr should generate events. Note that VFS2 already generates events for extended attributes. Updates #1479. PiperOrigin-RevId: 314244261
2020-06-02Merge release-20200522.0-56-g49a9b78f (automated)gVisor bot
2020-06-01Fix VFS2 gofer open(O_CREAT) reference leak.Jamie Liu
gofer.filesystem.createAndOpenChildLocked() doesn't need to take a reference on the new dentry since vfs.FileDescription.Init() will do so. PiperOrigin-RevId: 314242127
2020-06-01Merge release-20200522.0-55-g3a987160 (automated)gVisor bot
2020-06-01Handle gofer blocking opens of host named pipes in VFS2.Jamie Liu
Using tee instead of read to detect when a O_RDONLY|O_NONBLOCK pipe FD has a writer circumvents the problem of what to do with the byte read from the pipe, avoiding much of the complexity of the fdpipe package. PiperOrigin-RevId: 314216146
2020-06-01Merge release-20200522.0-50-g288a1ca6 (automated)gVisor bot
2020-06-01Merge pull request #2689 from lubinszARM:pr_prot_nonegVisor bot
PiperOrigin-RevId: 314186752
2020-05-29Merge release-20200522.0-43-g93edb36c (automated)gVisor bot
2020-05-29Refactor the ResolveExecutablePath logic.Nicolas Lacasse
PiperOrigin-RevId: 313871804
2020-05-29Merge release-20200522.0-42-g65569cfc (automated)gVisor bot
2020-05-29Update Go version build tagsMichael Pratt
None of the dependencies have changed in 1.15. It may be possible to simplify some of the wrappers in rawfile following 1.13, but that can come in a later change. PiperOrigin-RevId: 313863264
2020-05-29Merge release-20200522.0-40-g3bcfb092 (automated)gVisor bot
2020-05-29Merge pull request #2807 from kevinGC:iptables-sourcegVisor bot
PiperOrigin-RevId: 313842690
2020-05-29Merge release-20200522.0-33-gccf69bdd (automated)gVisor bot
2020-05-29Implement IN_EXCL_UNLINK inotify option in vfs2.Dean Deng
Limited to tmpfs. Inotify support in other filesystem implementations to follow. Updates #1479 PiperOrigin-RevId: 313828648
2020-05-29Merge release-20200522.0-31-g9ada8c97 (automated)gVisor bot
2020-05-29Fix the smallest of typos.Dean Deng
PiperOrigin-RevId: 313817646
2020-05-29Merge release-20200522.0-27-gfe464f44 (automated)gVisor bot
2020-05-29Port inotify to vfs2, with support in tmpfs.Dean Deng
Support in other filesystem impls is still needed. Unlike in Linux and vfs1, we need to plumb inotify down to each filesystem implementation in order to keep track of links/inode structures properly. IN_EXCL_UNLINK still needs to be implemented, as well as a few inotify hooks that are not present in either vfs1 or vfs2. Those will be addressed in subsequent changes. Updates #1479. PiperOrigin-RevId: 313781995
2020-05-29Merge release-20200522.0-26-g50844fee (automated)gVisor bot
2020-05-28Split VFS.MountAt into VFS.MountDisconnected and VFS.ConnectMountAt.Jamie Liu
This makes it straightforward to create bind mounts internally in VFS2: Given a bind mount root represented by vfs.VirtualDentry vd: - Create a new mount with VFS.NewDisconnectedMount(vd.Mount().Filesystem(), vd.Dentry()). - Connect the resulting mount in the appropriate namespace with VFS.ConnectMountAt(). Note that the resulting bind mount is non-recursive; recursive bind mounting requires explicitly duplicating all children of the original mount, which is best handled internally by VFS. Updates #179 PiperOrigin-RevId: 313703963
2020-05-28Enable iptables source filtering (-s/--source)Kevin Krakauer
2020-05-28Merge pull request #2792 from avagin:g3doc/fuse/refsgVisor bot
PiperOrigin-RevId: 313600051
2020-05-28Merge release-20200518.0-48-g32021bce (automated)gVisor bot
2020-05-27Correctly update link and ref counts in rmdir.Dean Deng
Inotify sends events when a watch target is reaches a link count of 0 (see include/linux/fsnotify.h:fsnotify_inoderemove). Currently, we do not account for both dir/ and dir/.. in unlink, causing syscalls/linux/inotify.cc:WatchTargetDeletionGeneratesEvent to fail because the expected inotify events are not generated. Furthermore, we should DecRef() once the inode reaches zero links; otherwise, we will leak a reference. PiperOrigin-RevId: 313502091
2020-05-27Merge release-20200518.0-45-g0bc022b7 (automated)gVisor bot
2020-05-27g3doc/fuse: add more referencesAndrei Vagin
2020-05-26Support dfltuid and dfltgid mount options in the VFS2 gofer client.Jamie Liu
PiperOrigin-RevId: 313332542
2020-05-26Implement splice(2) and tee(2) for VFS2.Jamie Liu
Updates #138 PiperOrigin-RevId: 313326354
2020-05-26Merge pull request #2751 from mrahatm:fusegVisor bot
PiperOrigin-RevId: 313300882
2020-05-26Write initial design doc for FUSE.Rahat Mahmood
2020-05-20Implement gap tracking in the segment set.Reapor-Yurnero
This change was derived from a change by: Reapor-Yurnero <reapor.yurnero@gmail.com> And has been modified by: Adin Scannell <ascannell@google.com> (The original change author is preserved for the commit.) This change implements gap tracking in the segment set by adding additional information in each node, and using that information to speed up gap finding from a linear scan to a O(log(n)) walk of the tree. This gap tracking is optional, and will default to off except for segment instances that set gapTracking equal to 1 in their const lists. PiperOrigin-RevId: 312621607
2020-05-20Move fsimpl/host file offset from inode to fileDescription.Dean Deng
PiperOrigin-RevId: 312559861
2020-05-19Implement mmap for host fs in vfs2.Dean Deng
In VFS1, both fs/host and fs/gofer used the same utils for host file mappings. Refactor parts of fsimpl/gofer to create similar utils to share with fsimpl/host (memory accounting code moved to fsutil, page rounding arithmetic moved to usermem). Updates #1476. PiperOrigin-RevId: 312345090
2020-05-19Fix flaky udp tests by polling before reading.Dean Deng
On native Linux, calling recv/read right after send/write sometimes returns EWOULDBLOCK, if the data has not made it to the receiving socket (even though the endpoints are on the same host). Poll before reading to avoid this. Making this change also uncovered a hostinet bug (gvisor.dev/issue/2726), which is noted in this CL. PiperOrigin-RevId: 312320587
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