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2018-08-31Remove not used depsFabricio Voznika
PiperOrigin-RevId: 211147521 Change-Id: I9b8b67df50a3ba084c07a48c72a874d7e2007f23
2018-08-31Do not use fs.FileOwnerFromContext in fs/proc.file.UnstableAttr().Jamie Liu
From //pkg/sentry/context/context.go: // - It is *not safe* to retain a Context passed to a function beyond the scope // of that function call. Passing a stored kernel.Task as a context.Context to fs.FileOwnerFromContext violates this requirement. PiperOrigin-RevId: 211143021 Change-Id: I4c5b02bd941407be4c9cfdbcbdfe5a26acaec037
2018-08-31Disintegrate kernel.TaskResources.Jamie Liu
This allows us to call kernel.FDMap.DecRef without holding mutexes cleanly. PiperOrigin-RevId: 211139657 Change-Id: Ie59d5210fb9282e1950e2e40323df7264a01bcec
2018-08-31Delete the long-obsolete kernel.TaskMaybe interface.Jamie Liu
PiperOrigin-RevId: 211131855 Change-Id: Ia7799561ccd65d16269e0ae6f408ab53749bca37
2018-08-31Automated rollback of changelist 210995199Fabricio Voznika
PiperOrigin-RevId: 211116429 Change-Id: I446d149c822177dc9fc3c64ce5e455f7f029aa82
2018-08-31runsc: Set volume mount rslave.Lantao Liu
PiperOrigin-RevId: 211111376 Change-Id: I27b8cb4e070d476fa4781ed6ecfa0cf1dcaf85f5
2018-08-31ipv6: ICMP supportTamir Duberstein
This CL does NDP link-address discovery for IPv6. It includes several small changes necessary to get linux to talk to this implementation. In particular, a hop limit of 255 is necessary for ICMPv6. PiperOrigin-RevId: 211103930 Change-Id: If25370ab84c6b1decfb15de917f3b0020f2c4e0e
2018-08-31Add other missing depMichael Pratt
runsc and runsc-race need the same deps. PiperOrigin-RevId: 211103766 Change-Id: Ib0c97078a469656c1e5b019648589a1d07915625
2018-08-31Fix RunAsRoot arguments forwardingFabricio Voznika
It was including the path to the executable twice in the arguments. PiperOrigin-RevId: 211098311 Change-Id: I5357c51c63f38dfab551b17bb0e04011a0575010
2018-08-31Add missing importTamir Duberstein
GoCompile: missing strict dependencies: /tmpfs/tmp/bazel/sandbox/linux-sandbox/1744/execroot/__main__/runsc/main.go: import of "gvisor.googlesource.com/gvisor/runsc/specutils" This was broken in 210995199. PiperOrigin-RevId: 211086595 Change-Id: I166b9a2ed8e4d6e624def944b720190940d7537c
2018-08-30Add seccomp filter to fsgoferFabricio Voznika
PiperOrigin-RevId: 211011542 Change-Id: Ib5a83a00f8eb6401603c6fb5b59afc93bac52558
2018-08-30runsc: Pass log and config files to sandbox process by FD.Nicolas Lacasse
This is a prereq for running the sandbox process as user "nobody", when it may not have permissions to open these files. Instead, we must open then before starting the sandbox process, and pass them by FD. PiperOrigin-RevId: 210995199 Change-Id: I715875a9553290b4a49394a8fcd93be78b1933dd
2018-08-30fs: Add empty dir at /sys/class/power_supply.Nicolas Lacasse
PiperOrigin-RevId: 210953512 Change-Id: I07d2d7fb0d268aa8eca26d81ef28b5b5c42289ee
2018-08-29ping: update comment about UDPIan Gudger
PiperOrigin-RevId: 210788012 Change-Id: I5ebdcf3d02bfab3484a1374fbccba870c9d68954
2018-08-29fs: Fix renameMu lock recursion.Nicolas Lacasse
dirent.walk() takes renameMu, but is often called with renameMu already held, which can lead to a deadlock. Fix this by requiring renameMu to be held for reading when dirent.walk() is called. This causes walks and existence checks to block while a rename operation takes place, but that is what we were already trying to enforce by taking renameMu in walk() anyways. PiperOrigin-RevId: 210760780 Change-Id: Id61018e6e4adbeac53b9c1b3aa24ab77f75d8a54
2018-08-29fs: Drop reference to over-written file before renaming over it.Nicolas Lacasse
dirent.go:Rename() walks to the file being replaced and defers replaced.DecRef(). After the rename, the reference is dropped, triggering a writeout and SettAttr call to the gofer. Because of lazyOpenForWrite, the gofer opens the replaced file BY ITS OLD NAME and calls ftruncate on it. This CL changes Remove to drop the reference on replaced (and thus trigger writeout) before the actual rename call. PiperOrigin-RevId: 210756097 Change-Id: I01ea09a5ee6c2e2d464560362f09943641638e0f
2018-08-28fasync: don't keep mutex after returnIan Gudger
PiperOrigin-RevId: 210637533 Change-Id: I3536c3f9efb54732a0d8ada8bc299142b2c1682f
2018-08-28Add argument checks to seccompFabricio Voznika
This is required to increase protection when running in GKE. PiperOrigin-RevId: 210635123 Change-Id: Iaaa8be49e73f7a3a90805313885e75894416f0b5
2018-08-28fs: Don't bother saving negative dirents.Nicolas Lacasse
PiperOrigin-RevId: 210616454 Change-Id: I3f536e2b4d603e540cdd9a67c61b8ec3351f4ac3
2018-08-28fs: Add tests for dirent ref counting with an overlay.Nicolas Lacasse
PiperOrigin-RevId: 210614669 Change-Id: I408365ff6d6c7765ed7b789446d30e7079cbfc67
2018-08-28sentry: optimize dirent weakref map save / restore.Zhaozhong Ni
Weak references save / restore involves multiple interface indirection and cause material latency overhead when there are lots of dirents, each containing a weak reference map. The nil entries in the map should also be purged. PiperOrigin-RevId: 210593727 Change-Id: Ied6f4c3c0726fcc53a24b983d9b3a79121b6b758
2018-08-28Drop support for Go 1.10Michael Pratt
PiperOrigin-RevId: 210589588 Change-Id: Iba898bc3eb8f13e17c668ceea6dc820fc8180a70
2018-08-28runsc: unmount volume mounts when destroy container.Lantao Liu
PiperOrigin-RevId: 210579178 Change-Id: Iae20639c5186b1a976cbff6d05bda134cd00d0da
2018-08-28Consolidate image tests into a single fileFabricio Voznika
This is to keep it consistent with other test, and it's easier to maintain them in single file. Also increase python test timeout to deflake it. PiperOrigin-RevId: 210575042 Change-Id: I2ef5bcd5d97c08549f0c5f645c4b694253ef0b4d
2018-08-28Bump to Go 1.11Michael Pratt
The procid offset is unchanged. PiperOrigin-RevId: 210551969 Change-Id: I33ba1ce56c2f5631b712417d870aa65ef24e6022
2018-08-28sentry: avoid double counting map objects in save / restore stats.Zhaozhong Ni
PiperOrigin-RevId: 210551929 Change-Id: Idd05935bffc63b39166cc3751139aff61b689faa
2018-08-27Add command-line parameter to trigger panic on signalFabricio Voznika
This is to troubleshoot problems with a hung process that is not responding to 'runsc debug --stack' command. PiperOrigin-RevId: 210483513 Change-Id: I4377b210b4e51bc8a281ad34fd94f3df13d9187d
2018-08-27runsc: Fix readonly filesystem causing failure to create containers.Kevin Krakauer
For readonly filesystems specified via relative path, we were forgetting to mount relative to the container's bundle directory. PiperOrigin-RevId: 210483388 Change-Id: I84809fce4b1f2056d0e225547cb611add5f74177
2018-08-27Add /proc/sys/kernel/shm[all,max,mni].Brian Geffon
PiperOrigin-RevId: 210459956 Change-Id: I51859b90fa967631e0a54a390abc3b5541fbee66
2018-08-27Add various statisticsTamir Duberstein
PiperOrigin-RevId: 210442599 Change-Id: I9498351f461dc69c77b7f815d526c5693bec8e4a
2018-08-27fs: Fix remote-revalidate cache policy.Nicolas Lacasse
When revalidating a Dirent, if the inode id is the same, then we don't need to throw away the entire Dirent. We can just update the unstable attributes in place. If the inode id has changed, then the remote file has been deleted or moved, and we have no choice but to throw away the dirent we have a look up another. In this case, we may still end up losing a mounted dirent that is a child of the revalidated dirent. However, that seems appropriate here because the entire mount point has been pulled out from underneath us. Because gVisor's overlay is at the Inode level rather than the Dirent level, we must pass the parent Inode and name along with the Inode that is being revalidated. PiperOrigin-RevId: 210431270 Change-Id: I705caef9c68900234972d5aac4ae3a78c61c7d42
2018-08-27runsc: fsgofer should return a unique QID.Path for each file.Nicolas Lacasse
Previously, we were only using the host inode id as the QID path. But the host filesystem can have multiple devices with conflicting inode ids. This resulted in duplicate inode ids in the sentry. This CL generates a unique QID for each <host inode, host device> pair. PiperOrigin-RevId: 210424813 Change-Id: I16d106f61c7c8f910c0da4ceec562a010ffca2fb
2018-08-27Add runsc-race target.Adin Scannell
PiperOrigin-RevId: 210422178 Change-Id: I984dd348d467908bc3180a20fc79b8387fcca05e
2018-08-27sentry: mark fsutil.DirFileOperations as savable.Zhaozhong Ni
PiperOrigin-RevId: 210405166 Change-Id: I252766015885c418e914007baf2fc058fec39b3e
2018-08-27Put fsgofer inside chrootFabricio Voznika
Now each container gets its own dedicated gofer that is chroot'd to the rootfs path. This is done to add an extra layer of security in case the gofer gets compromised. PiperOrigin-RevId: 210396476 Change-Id: Iba21360a59dfe90875d61000db103f8609157ca0
2018-08-27runsc: Terminal resizing support.Kevin Krakauer
Implements the TIOCGWINSZ and TIOCSWINSZ ioctls, which allow processes to resize the terminal. This allows, for example, sshd to properly set the window size for ssh sessions. PiperOrigin-RevId: 210392504 Change-Id: I0d4789154d6d22f02509b31d71392e13ee4a50ba
2018-08-25Upstreaming DHCP changes from FuchsiaTamir Duberstein
PiperOrigin-RevId: 210221388 Change-Id: Ic82d592b8c4778855fa55ba913f6b9a10b2d511f
2018-08-24runsc: Terminal support for "docker exec -ti".Nicolas Lacasse
This CL adds terminal support for "docker exec". We previously only supported consoles for the container process, but not exec processes. The SYS_IOCTL syscall was added to the default seccomp filter list, but only for ioctls that get/set winsize and termios structs. We need to allow these ioctl for all containers because it's possible to run "exec -ti" on a container that was started without an attached console, after the filters have been installed. Note that control-character signals are still not properly supported. Tested with: $ docker run --runtime=runsc -it alpine In another terminial: $ docker exec -it <containerid> /bin/sh PiperOrigin-RevId: 210185456 Change-Id: I6d2401e53a7697bb988c120a8961505c335f96d9
2018-08-24fs: Drop unused WaitGroup in Dirent.destroy.Nicolas Lacasse
PiperOrigin-RevId: 210182476 Change-Id: I655a2a801e2069108d30323f7f5ae76deb3ea3ec
2018-08-24compressio: support optional hashing and eliminate hashio.Zhaozhong Ni
Compared to previous compressio / hashio nesting, there is up to 100% speedup. PiperOrigin-RevId: 210161269 Change-Id: I481aa9fe980bb817fe465fe34d32ea33fc8abf1c
2018-08-24runsc: Allow runsc to properly search the PATH for executable name.Kevin Krakauer
Previously, runsc improperly attempted to find an executable in the container's PATH. We now search the PATH via the container's fsgofer rather than the host FS, eliminating the confusing differences between paths on the host and within a container. PiperOrigin-RevId: 210159488 Change-Id: I228174dbebc4c5356599036d6efaa59f28ff28d2
2018-08-24SyscallRules merge and add were dropping AllowAny rulesFabricio Voznika
PiperOrigin-RevId: 210131001 Change-Id: I285707c5143b3e4c9a6948c1d1a452b6f16e65b7
2018-08-24Add option to panic gofer if writes are attempted over RO mountsFabricio Voznika
This is used when '--overlay=true' to guarantee writes are not sent to gofer. PiperOrigin-RevId: 210116288 Change-Id: I7616008c4c0e8d3668e07a205207f46e2144bf30
2018-08-23Implement POSIX per-process interval timers.Jamie Liu
PiperOrigin-RevId: 210021612 Change-Id: If7c161e6fd08cf17942bfb6bc5a8d2c4e271c61e
2018-08-23netstack: make listening tcp socket close state setting and cleanup atomic.Zhaozhong Ni
Otherwise the socket saving logic might find workers still running for closed sockets unexpectedly. PiperOrigin-RevId: 210018905 Change-Id: I443a04d355613f5f9983252cc6863bff6e0eda3a
2018-08-23sentry: mark idMapSeqHandle as savable.Zhaozhong Ni
PiperOrigin-RevId: 209994384 Change-Id: I16186cf79cb4760a134f3968db30c168a5f4340e
2018-08-23Clean up syscall filtersFabricio Voznika
Removed syscalls that are only used by whitelistfs which has its own set of filters. PiperOrigin-RevId: 209967259 Change-Id: Idb2e1b9d0201043d7cd25d96894f354729dbd089
2018-08-23Encapsulate netstack metricsIan Gudger
PiperOrigin-RevId: 209943212 Change-Id: I96dcbc7c2ab2426e510b94a564436505256c5c79
2018-08-22runsc: De-flakes container_test TestMultiContainerSanity.Kevin Krakauer
The bug was caused by os.File's finalizer, which closes the file. Because fsgofer.serve() was passed a file descriptor as an int rather than a os.File, callers would pass os.File.Fd(), and the os.File would go out of scope. Thus, the file would get GC'd and finalized nondeterministically, causing failures when the file was used. PiperOrigin-RevId: 209861834 Change-Id: Idf24d5c1f04c9b28659e62c97202ab3b4d72e994
2018-08-22Add separate Recycle method for allocator.Adin Scannell
This improves debugging for pagetable-related issues. PiperOrigin-RevId: 209827795 Change-Id: I4cfa11664b0b52f26f6bc90a14c5bb106f01e038
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