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2019-07-30Merge 1decf764 (automated)gVisor bot
2019-07-30Change syscall.POLL to syscall.PPOLL.Haibo Xu
syscall.POLL is not supported on arm64, using syscall.PPOLL to support both the x86 and arm64. refs #63 Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I2c81a063d3ec4e7e6b38fe62f17a0924977f505e COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/543 from xiaobo55x:master ba598263fd3748d1addd48e4194080aa12085164 PiperOrigin-RevId: 260752049
2019-07-27Merge 4183b902 (automated)gVisor bot
2019-07-26runsc: propagate the alsologtostderr to sub-commandsAndrei Vagin
PiperOrigin-RevId: 260239119
2019-07-26Merge b5012237 (automated)gVisor bot
2019-07-26Merge pull request #452 from zhangningdlut:chris_test_pidnsgVisor bot
PiperOrigin-RevId: 260220279
2019-07-25Merge 7052d21d (automated)gVisor bot
2019-07-25Automated rollback of changelist 255679453Fabricio Voznika
PiperOrigin-RevId: 260047477
2019-07-24Use different pidns among different containerschris.zn
The different containers in a sandbox used only one pid namespace before. This results in that a container can see the processes in another container in the same sandbox. This patch use different pid namespace for different containers. Signed-off-by: chris.zn <chris.zn@antfin.com>
2019-07-23Merge 04cbb13c (automated)gVisor bot
2019-07-23Give each container a distinct MountNamespace.Nicolas Lacasse
This keeps all container filesystem completely separate from eachother (including from the root container filesystem), and allows us to get rid of the "__runsc_containers__" directory. It also simplifies container startup/teardown as we don't have to muck around in the root container's filesystem. PiperOrigin-RevId: 259613346
2019-07-12Merge 6116473b (automated)gVisor bot
2019-07-12Take a reference on the already-mounted inode before re-mounting it.Nicolas Lacasse
PiperOrigin-RevId: 257855777
2019-07-12Merge 69e0affa (automated)gVisor bot
2019-07-08Merge pull request #375 from jmgao:mastergVisor bot
PiperOrigin-RevId: 257041876
2019-07-03Avoid importing platforms from many source filesAndrei Vagin
PiperOrigin-RevId: 256494243
2019-07-02Remove map from fd_map, change to fd_table.Adin Scannell
This renames FDMap to FDTable and drops the kernel.FD type, which had an entire package to itself and didn't serve much use (it was freely cast between types, and served as more of an annoyance than providing any protection.) Based on BenchmarkFDLookupAndDecRef-12, we can expect 5-10 ns per lookup operation, and 10-15 ns per concurrent lookup operation of savings. This also fixes two tangential usage issues with the FDMap. Namely, non-atomic use of NewFDFrom and associated calls to Remove (that are both racy and fail to drop the reference on the underlying file.) PiperOrigin-RevId: 256285890
2019-06-28Add finalizer on AtomicRefCount to check for leaks.Ian Gudger
PiperOrigin-RevId: 255711454
2019-06-28Automated rollback of changelist 255263686Nicolas Lacasse
PiperOrigin-RevId: 255679453
2019-06-28runsc: allow openat for runsc-raceAndrei Vagin
I see that runsc-race is killed by SIGSYS, because openat isn't allowed by seccomp filters: 60052 openat(AT_FDCWD, "/proc/sys/vm/overcommit_memory", O_RDONLY|O_CLOEXEC <unfinished ...> 60052 <... openat resumed> ) = 257 60052 --- SIGSYS {si_signo=SIGSYS, si_code=SYS_SECCOMP, si_call_addr=0xfaacf1, si_syscall=__NR_openat, si_arch=AUDIT_ARCH_X86_64} --- PiperOrigin-RevId: 255640808
2019-06-27Merge 5b41ba5d (automated)gVisor bot
2019-06-27Merge 085a9075 (automated)gVisor bot
2019-06-27Fix various spelling issues in the documentationMichael Pratt
Addresses obvious typos, in the documentation only. COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/443 from Pixep:fix/documentation-spelling 4d0688164eafaf0b3010e5f4824b35d1e7176d65 PiperOrigin-RevId: 255477779
2019-06-27Cache directory entries in the overlayMichael Pratt
Currently, the overlay dirCache is only used for a single logical use of getdents. i.e., it is discard when the FD is closed or seeked back to the beginning. But the initial work of getting the directory contents can be quite expensive (particularly sorting large directories), so we should keep it as long as possible. This is very similar to the readdirCache in fs/gofer. Since the upper filesystem does not have to allow caching readdir entries, the new CacheReaddir MountSourceOperations method controls this behavior. This caching should be trivially movable to all Inodes if desired, though that adds an additional copy step for non-overlay Inodes. (Overlay Inodes already do the extra copy). PiperOrigin-RevId: 255477592
2019-06-26Merge 42e212f6 (automated)gVisor bot
2019-06-26Preserve permissions when checking lowerFabricio Voznika
The code was wrongly assuming that only read access was required from the lower overlay when checking for permissions. This allowed non-writable files to be writable in the overlay. Fixes #316 PiperOrigin-RevId: 255263686
2019-06-24fsgopher: reopen files via /proc/self/fdAndrei Vagin
When we reopen file by path, we can't be sure that we will open exactly the same file. The file can be deleted and another one with the same name can be created. PiperOrigin-RevId: 254898594
2019-06-24Merge b21b1db7 (automated)gVisor bot
2019-06-24Allow to change logging options using 'runsc debug'Fabricio Voznika
New options are: runsc debug --strace=off|all|function1,function2 runsc debug --log-level=warning|info|debug runsc debug --log-packets=true|false Updates #407 PiperOrigin-RevId: 254843128
2019-06-14Merge a8608c50 (automated)gVisor bot
2019-06-14Enable Receive Buffer Auto-Tuning for runsc.Bhasker Hariharan
Updates #230 PiperOrigin-RevId: 253225078
2019-06-14Merge 3e9b8ecb (automated)gVisor bot
2019-06-13Plumb context through more layers of filesytem.Ian Gudger
All functions which allocate objects containing AtomicRefCounts will soon need a context. PiperOrigin-RevId: 253147709
2019-06-13Merge add40fd6 (automated)gVisor bot
2019-06-13Update canonical repository.Adin Scannell
This can be merged after: https://github.com/google/gvisor-website/pull/77 or https://github.com/google/gvisor-website/pull/78 PiperOrigin-RevId: 253132620
2019-06-13Merge 4fdd560b (automated)gVisor bot
2019-06-13Set the HOME environment variable (fixes #293)Ian Lewis
runsc will now set the HOME environment variable as required by POSIX. The user's home directory is retrieved from the /etc/passwd file located on the container's file system during boot. PiperOrigin-RevId: 253120627
2019-06-13Fix use of "2 ^ 30".Josh Gao
2 ^ 30 is 28, not 1073741824.
2019-06-12Merge bb849bad (automated)gVisor bot
2019-06-12gvisor/runsc: apply seccomp filters before parsing a state fileAndrei Vagin
PiperOrigin-RevId: 252869983
2019-06-12Merge 356d1be1 (automated)gVisor bot
2019-06-12Allow 'runsc do' to run without rootFabricio Voznika
'--rootless' flag lets a non-root user execute 'runsc do'. The drawback is that the sandbox and gofer processes will run as root inside a user namespace that is mapped to the caller's user, intead of nobody. And network is defaulted to '--network=host' inside the root network namespace. On the bright side, it's very convenient for testing: runsc --rootless do ls runsc --rootless do curl www.google.com PiperOrigin-RevId: 252840970
2019-06-11Merge fc746efa (automated)gVisor bot
2019-06-11Add support to mount pod shared tmpfs mountsFabricio Voznika
Parse annotations containing 'gvisor.dev/spec/mount' that gives hints about how mounts are shared between containers inside a pod. This information can be used to better inform how to mount these volumes inside gVisor. For example, a volume that is shared between containers inside a pod can be bind mounted inside the sandbox, instead of being two independent mounts. For now, this information is used to allow the same tmpfs mounts to be shared between containers which wasn't possible before. PiperOrigin-RevId: 252704037
2019-06-11Merge 847c4b97 (automated)gVisor bot
2019-06-11Use net.HardwareAddr for FDBasedLink.LinkAddressFabricio Voznika
It prints formatted to the log. PiperOrigin-RevId: 252699551
2019-06-10Merge a00157cc (automated)gVisor bot
2019-06-07Move //pkg/sentry/memutil to //pkg/memutil.Jamie Liu
PiperOrigin-RevId: 252124156
2019-06-06Implement reclaim-driven MemoryFile eviction.Jamie Liu
PiperOrigin-RevId: 251950660
2019-06-06Add multi-fd support to fdbased endpoint.Bhasker Hariharan
This allows an fdbased endpoint to have multiple underlying fd's from which packets can be read and dispatched/written to. This should allow for higher throughput as well as better scalability of the network stack as number of connections increases. Updates #231 PiperOrigin-RevId: 251852825
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