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2019-06-26Merge 67e2f227 (automated)gVisor bot
2019-06-26Merge e98ce4a2 (automated)gVisor bot
2019-06-25Add TODO reminder to remove tmpfs caching optionsMichael Pratt
Updates #179 PiperOrigin-RevId: 255081565
2019-06-25Merge ffee0f36 (automated)gVisor bot
2019-06-25Merge a8f148b8 (automated)gVisor bot
2019-06-25Merge 03ae91c6 (automated)gVisor bot
2019-06-25gvisor: lockless read access for task credentialsAndrei Vagin
Credentials are immutable and even before these changes we could read them without locks, but we needed to take a task lock to get a credential object from a task object. It is possible to avoid this lock, if we will guarantee that a credential object will not be changed after setting it on a task. PiperOrigin-RevId: 254989492
2019-06-25Merge fd16a329 (automated)gVisor bot
2019-06-25Merge e9ea7230 (automated)gVisor bot
2019-06-24fs: synchronize concurrent writes into files with O_APPENDAndrei Vagin
For files with O_APPEND, a file write operation gets a file size and uses it as offset to call an inode write operation. This means that all other operations which can change a file size should be blocked while the write operation doesn't complete. PiperOrigin-RevId: 254873771
2019-06-25Merge 7f5d0afe (automated)gVisor bot
2019-06-24Add O_EXITKILL to ptrace options.Adin Scannell
This prevents a race before PDEATH_SIG can take effect during a sentry crash. Discovered and solution by avagin@. PiperOrigin-RevId: 254871534
2019-06-24Merge c5486f51 (automated)gVisor bot
2019-06-24Implement /proc/net/tcp.Rahat Mahmood
PiperOrigin-RevId: 254854346
2019-06-24platform/ptrace: specify PTRACE_O_TRACEEXIT for stub-processesAndrei Vagin
The tracee is stopped early during process exit, when registers are still available, allowing the tracer to see where the exit occurred, whereas the normal exit notifi? cation is done after the process is finished exiting. Without this option, dumpAndPanic fails to get registers. PiperOrigin-RevId: 254852917
2019-06-24Merge 87df9aab (automated)gVisor bot
2019-06-24Use correct statx syscall number for amd64.Nicolas Lacasse
The previous number was for the arm architecture. Also change the statx tests to force them to run on gVisor, which would have caught this issue. PiperOrigin-RevId: 254846831
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
2019-06-22Merge 35719d52 (automated)gVisor bot
2019-06-22Implement statx.Nicolas Lacasse
We don't have the plumbing for btime yet, so that field is left off. The returned mask indicates that btime is absent. Fixes #343 PiperOrigin-RevId: 254575752
2019-06-22Merge ab6774ce (automated)gVisor bot
2019-06-21gvisor/fs: getdents returns 0 if offset is equal to FileMaxOffsetAndrei Vagin
FileMaxOffset is a special case when lseek(d, 0, SEEK_END) has been called. PiperOrigin-RevId: 254498777
2019-06-21Merge 6f933a93 (automated)gVisor bot
2019-06-21Merge ae4ef32b (automated)gVisor bot
2019-06-21Merge 72737532 (automated)gVisor bot
2019-06-21ext4 block group descriptor implementation in disk layout package.Ayush Ranjan
PiperOrigin-RevId: 254482180
2019-06-21Merge 5ba16d51 (automated)gVisor bot
2019-06-21Add list of stuck tasks to panic messageFabricio Voznika
PiperOrigin-RevId: 254450309
2019-06-21Merge c0317b28 (automated)gVisor bot
2019-06-21Merge f94653b3 (automated)gVisor bot
2019-06-21kernel: call t.mu.Unlock() explicitly in WithMuLockedAndrei Vagin
defer here doesn't improve readability, but we know it slower that the explicit call. PiperOrigin-RevId: 254441473
2019-06-21Merge 335fd987 (automated)gVisor bot
2019-06-21Merge 054b5632 (automated)gVisor bot
2019-06-21Update commentFabricio Voznika
PiperOrigin-RevId: 254428866
2019-06-21Merge dc36c34a (automated)gVisor bot
2019-06-20Merge 3c7448ab (automated)gVisor bot
2019-06-20Merge 292f70cb (automated)gVisor bot
2019-06-20Preallocate auth.NewAnonymousCredentials() in contexttest.TestContext.Jamie Liu
Otherwise every call to, say, fs.ContextCanAccessFile() in a benchmark using contexttest allocates new auth.Credentials, a new auth.UserNamespace, ... PiperOrigin-RevId: 254261051
2019-06-20Add package docs to seqfile and ramfsMichael Pratt
These are the only packages missing docs: https://godoc.org/gvisor.dev/gvisor PiperOrigin-RevId: 254261022
2019-06-20Merge 0b213507 (automated)gVisor bot
2019-06-20Implement madvise(MADV_DONTFORK)Neel Natu
PiperOrigin-RevId: 254253777
2019-06-20Merge b46ec370 (automated)gVisor bot
2019-06-20Merge 7e495156 (automated)gVisor bot
2019-06-19Deflake SendFileTest_Shutdown.Ian Gudger
The sendfile syscall's backing doSplice contained a race with regard to blocking. If the first attempt failed with syserror.ErrWouldBlock and then the blocking file became ready before registering a waiter, we would just return the ErrWouldBlock (even if we were supposed to block). PiperOrigin-RevId: 254114432
2019-06-20Merge c2d87d5d (automated)gVisor bot
2019-06-19Merge 9781128d (automated)gVisor bot
2019-06-19Merge 773423a9 (automated)gVisor bot
2019-06-19Merge 9d2efaac (automated)gVisor bot
2019-06-19Merge 29f9e4fa (automated)gVisor bot
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