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2020-08-08Merge release-20200804.0-53-g13a8ae81b (automated)gVisor bot
2020-08-07Add context.FullStateChanged()Andrei Vagin
It indicates that the Sentry has changed the state of the thread and next calls of PullFullState() has to do nothing. PiperOrigin-RevId: 325567415
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-20200804.0-51-g977618c8e (automated)gVisor bot
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
2020-08-08Merge release-20200804.0-48-g8f6d576af (automated)gVisor bot
2020-08-07Merge pull request #3069 from lubinszARM:pr_serr_injection2gVisor bot
PiperOrigin-RevId: 325546308
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-20200804.0-29-g63447e5af (automated)gVisor bot
2020-08-06Only register /dev/net/tun if supported.Dean Deng
PiperOrigin-RevId: 325266487
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-20200804.0-23-g1403a88c6 (automated)gVisor bot
2020-08-05Release extra memfd reference.Dean Deng
PiperOrigin-RevId: 325122849
2020-08-05Merge release-20200804.0-19-g190b1e6bd (automated)gVisor bot
2020-08-05Stop profiling when the sentry exitsFabricio Voznika
Also removes `--profile-goroutine` because it's equivalent to `debug --stacks`. PiperOrigin-RevId: 325061502
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-20200622.1-335-g87ee3898f (automated)gVisor bot
2020-08-04Handle EOF in vfs2 sendfile.Dean Deng
Discovered by syzkaller. PiperOrigin-RevId: 324938438
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
2020-08-05Merge release-20200622.1-333-gb44408b40 (automated)gVisor bot
2020-08-04Automated rollback of changelist 324906582Dean Deng
PiperOrigin-RevId: 324931854
2020-08-05Merge release-20200622.1-332-g338f96b36 (automated)gVisor bot
2020-08-04Merge release-20200622.1-329-g00993130e (automated)gVisor bot
2020-08-04Merge release-20200622.1-328-g0500f84b6 (automated)gVisor bot
2020-08-04Add reference counting utility to VFS2.Dean Deng
The utility has several differences from the VFS1 equivalent: - There are no weak references, which have a significant overhead - In order to print useful debug messages with the type of the reference- counted object, we use a generic Refs object with the owner type as a template parameter. In vfs1, this was accomplished by storing a type name and caller stack directly in the ref count (as in vfs1), which increases the struct size by 6x. (Note that the caller stack was needed because fs types like Dirent were shared by all fs implementations; in vfs2, each impl has its own data structures, so this is no longer necessary.) As an example, the utility is added to tmpfs.inode. Updates #1486. PiperOrigin-RevId: 324906582
2020-08-04Internal change.gVisor bot
PiperOrigin-RevId: 324826968
2020-08-04Merge release-20200622.1-318-g25798f214 (automated)gVisor bot
2020-08-03Add callbacks to support lazy loading/restoring thread statesAndrei Vagin
PiperOrigin-RevId: 324748508
2020-08-04Merge release-20200622.1-316-gad7c9fc4c (automated)gVisor bot
2020-08-03[vfs2] Implement /sys/devices/system/cpu/cpuX.Ayush Ranjan
Fixes #3364 PiperOrigin-RevId: 324724614
2020-08-03Merge release-20200622.1-315-gfe441dd25 (automated)gVisor bot
2020-08-03Internal change.gVisor bot
PiperOrigin-RevId: 324695672
2020-08-03Merge release-20200622.1-314-g5626ccf61 (automated)gVisor bot
2020-08-03Remove old TODO.Dean Deng
Fixes #2920. PiperOrigin-RevId: 324695118
2020-08-03Merge release-20200622.1-313-gb2ae7ea1b (automated)gVisor bot
2020-08-03Plumbing context.Context to DecRef() and Release().Nayana Bidari
context is passed to DecRef() and Release() which is needed for SO_LINGER implementation. PiperOrigin-RevId: 324672584
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