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2020-08-18Merge release-20200810.0-49-gb3141b680 (automated)gVisor bot
2020-08-18Merge release-20200810.0-48-gb9d87ae7a (automated)gVisor bot
2020-08-18[vfs2] Implement /proc/sys/net/ipv4/tcp_rmem and /proc/sys/net/ipv4/tcp_wmem.Ayush Ranjan
Updates #1035 PiperOrigin-RevId: 327253907
2020-08-18Merge release-20200810.0-47-g673b6cc7f (automated)gVisor bot
2020-08-18Merge release-20200810.0-46-gda5c2ea6d (automated)gVisor bot
2020-08-17Add a skeleton for verity file systemgVisor bot
PiperOrigin-RevId: 327123477
2020-08-17Merge release-20200810.0-44-gd42d01b97 (automated)gVisor bot
2020-08-17Merge release-20200810.0-43-g1b938ba72 (automated)gVisor bot
2020-08-17Merge release-20200810.0-42-g988ab2705 (automated)gVisor bot
2020-08-17Merge release-20200810.0-41-ge3e1b3689 (automated)gVisor bot
2020-08-17[vfs] Do O_DIRECTORY check after resolving symlinks.Ayush Ranjan
Fixes python runtime test test_glob. Updates #3515 We were checking is the to-be-opened dentry is a dir or not before resolving symlinks. We should check that after resolving symlinks. This was preventing us from opening a symlink which pointed to a directory with O_DIRECTORY. Also added this check in tmpfs and removed a duplicate check. PiperOrigin-RevId: 327085895
2020-08-17Merge release-20200810.0-40-ge3c4bbd10 (automated)gVisor bot
2020-08-17Merge release-20200810.0-39-g3bd066d50 (automated)gVisor bot
2020-08-15Merge release-20200810.0-36-g9a7b5830a (automated)gVisor bot
2020-08-15Merge release-20200810.0-35-g1736b2208 (automated)gVisor bot
2020-08-14Merge release-20200810.0-28-gd6520e1d0 (automated)gVisor bot
2020-08-13[vfs2][gofer] Fix file creation flags sent to gofer.Ayush Ranjan
Fixes php runtime test ext/standard/tests/file/readfile_basic.phpt Fixes #3516 fsgofers only want the access mode in the OpenFlags passed to Create(). If more flags are supplied (like O_APPEND in this case), read/write from that fd will fail with EBADF. See runsc/fsgofer/fsgofer.go:WriteAt() VFS2 was providing more than just access modes. So filtering the flags using p9.OpenFlagsModeMask == linux.O_ACCMODE fixes the issue. Gofer in VFS1 also only extracts the access mode flags while making the create RPC. See pkg/sentry/fs/gofer/path.go:Create() Even in VFS2, when we open a handle, we extract out only the access mode flags + O_TRUNC. See third_party/gvisor/pkg/sentry/fsimpl/gofer/handle.go:openHandle() Added a test for this. PiperOrigin-RevId: 326574829
2020-08-14Merge release-20200810.0-27-gd3bb50ebf (automated)gVisor bot
2020-08-14Merge release-20200810.0-26-g20be1c0e6 (automated)gVisor bot
2020-08-14Merge release-20200810.0-24-g5036f135e (automated)gVisor bot
2020-08-13Merge release-20200810.0-23-g47515f475 (automated)gVisor bot
2020-08-13Merge release-20200810.0-21-g36134667b (automated)gVisor bot
2020-08-12Add reference leak checking to vfs2 tmpfs.inode.Dean Deng
Updates #1486. PiperOrigin-RevId: 326354750
2020-08-13Merge release-20200810.0-20-g42b610d56 (automated)gVisor bot
2020-08-12[vfs2][gofer] Return appropriate errors when opening and creating files.Ayush Ranjan
Fixes php test ext/standard/tests/file/touch_variation5.phpt on vfs2. Updates #3516 Also spotted a bug with O_EXCL, where we did not return EEXIST when we tried to open the root of the filesystem with O_EXCL | O_CREAT. Added some more tests for open() corner cases. PiperOrigin-RevId: 326346863
2020-08-12Merge release-20200810.0-16-ge6df6222a (automated)gVisor bot
2020-08-12Merge pull request #3250 from craig08:fuse-getattrgVisor bot
PiperOrigin-RevId: 326313858
2020-08-12Merge release-20200804.0-67-gd797f2666 (automated)gVisor bot
2020-08-12Redirect TODOFabricio Voznika
Fixes #2923 PiperOrigin-RevId: 326296589
2020-08-10Implement FUSE_GETATTRCraig Chi
FUSE_GETATTR is called when a stat(2), fstat(2), or lstat(2) is issued from VFS2 layer to a FUSE filesystem. Fixes #3175
2020-08-08Merge release-20200804.0-52-g3be26a271 (automated)gVisor bot
2020-08-07[vfs2] Fix tmpfs mounting.Ayush Ranjan
Earlier we were using NLink to decide if /tmp is empty or not. However, NLink at best tells us about the number of subdirectories (via the ".." entries). NLink = n + 2 for n subdirectories. But it does not tell us if the directory is empty. There still might be non-directory files. We could also not rely on NLink because host overlayfs always returned 1. VFS1 uses Readdir to decide if the directory is empty. Used a similar approach. We now use IterDirents to decide if the "/tmp" directory is empty. Fixes #3369 PiperOrigin-RevId: 325554234
2020-08-08Merge release-20200804.0-49-g343661770 (automated)gVisor bot
2020-08-07Don't hold gofer.filesystem.renameMu during dentry destruction.Jamie Liu
PiperOrigin-RevId: 325546629
2020-08-07Merge release-20200804.0-45-g0b7cd1e75 (automated)gVisor bot
2020-08-07Mark dropped pages unevictable in fsimpl/gofer.dentry.destroyLocked.Jamie Liu
PiperOrigin-RevId: 325531657
2020-08-07Merge release-20200804.0-39-g93cb66825 (automated)gVisor bot
2020-08-07Support separate read/write handles in fsimpl/gofer.dentry.Jamie Liu
PiperOrigin-RevId: 325490674
2020-08-07Merge release-20200804.0-36-g4fa1c304a (automated)gVisor bot
2020-08-07Try to update atime and mtime on VFS2 gofer files on dentry eviction.Jamie Liu
PiperOrigin-RevId: 325388385
2020-08-07Merge release-20200804.0-35-gf20e63e31 (automated)gVisor bot
2020-08-06Add LinkAt support to goferFabricio Voznika
Updates #1198 PiperOrigin-RevId: 325350818
2020-08-06Merge release-20200804.0-27-g35312a95c (automated)gVisor bot
2020-08-05Add loss recovery option for TCP.Nayana Bidari
/proc/sys/net/ipv4/tcp_recovery is used to enable RACK loss recovery in TCP. PiperOrigin-RevId: 325157807
2020-08-06Merge release-20200804.0-26-g7ed4b2b5a (automated)gVisor bot
2020-08-05Correctly decrement link counts in tmpfs rename operations.Dean Deng
When a directory is replaced by a rename operation, its link count should reach zero. We were missing the link from `dir/.` PiperOrigin-RevId: 325141730
2020-08-05Merge release-20200622.1-337-ga2e129b54 (automated)gVisor bot
2020-08-05Add missing case in tmpfs.inode.direntType.Dean Deng
This was discovered by syzkaller. PiperOrigin-RevId: 325025193
2020-08-05Merge release-20200622.1-334-g102735bfb (automated)gVisor bot
2020-08-04Inline gofer.regularFileFD.pwriteLockedFabricio Voznika
Go compiler barely inlines anything, so inline by hand pwriteLocked since it's called from a single place. PiperOrigin-RevId: 324937734