By Walking before checking that the directory is writable and
executable, MayDelete may return the Walk error (e.g., ENOENT) which
would normally be masked by a permission error (EACCES).
PiperOrigin-RevId: 224222453
Change-Id: I108a7f730e6bdaa7f277eaddb776267c00805475
If sys_prctl is called with PR_SET_MM without CAP_SYS_RESOURCE,
the syscall should return failure with errno set to EPERM.
See: http://man7.org/linux/man-pages/man2/prctl.2.html
PiperOrigin-RevId: 224182874
Change-Id: I630d1dd44af8b444dd16e8e58a0764a0cf1ad9a3
This removes code that should have never made it in in the first place, but did so due to incomplete testing. With the new tests the original code fails, the new code passes.
PiperOrigin-RevId: 224086966
Change-Id: I646fef76977f4528f3705f497b95fad6b3ec32bc
FileOperations.Write should return ErrWouldBlock to allow the upper
layer to loop and sendmsg should continue writing where it left off
on a partial write.
PiperOrigin-RevId: 224081631
Change-Id: Ic61f6943ea6b7abbd82e4279decea215347eac48
The signature of time.now has remained unchanged:
c2412a7681/src/time/time.go (L1072)
PiperOrigin-RevId: 224061160
Change-Id: Ic84bd6ee8fb9952cd9ab580bcb0892444ce7c2da
The number of symbolic links that are allowed to be followed
are for a full path and not just a chain of symbolic links.
PiperOrigin-RevId: 224047321
Change-Id: I5e3c4caf66a93c17eeddcc7f046d1e8bb9434a40
Bazel runs multiple test cases on the same thread. Some of the test
cases rely on the test thread starting with the default memory policy,
while other tests modify the test thread's memory policy. This
obviously breaks when the test framework doesn't run each test case on
a new thread.
Also fixing an incompatibility where set_mempolicy(2) was prevented
from specifying an empty nodemask, which is allowed for some modes.
PiperOrigin-RevId: 224038957
Change-Id: Ibf780766f2706ebc9b129dbc8cf1b85c2a275074
Untyped integer constants default to type int and the binary package will panic
if one tries to encode an int.
PiperOrigin-RevId: 223890001
Change-Id: Iccc3afd6d74bad24c35d764508e450fd317b76ec
Fixes this error in bazel:
The native http_archive rule is deprecated.
load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive") for a
drop-in replacement.
PiperOrigin-RevId: 223595891
Change-Id: I4706dc5b92970e00b673d22edea82fa45d854f07
Add a new 'docs' directory for that can be built on in the future. Docs are
divided into a 'user guide', 'contributor guide', and 'architecture guide'.
This is currently a work in progress.
PiperOrigin-RevId: 223326836
Change-Id: I78d08d6a89d686e92d3415d4269463e8e74bddee
gvisor-containerd-shim moved. It now has a stable URL that run_tests.sh always
uses.
PiperOrigin-RevId: 223188822
Change-Id: I5687c78289404da27becd8d5949371e580fdb360
Replaces the WaitGroup with a RWMutex. Calls to Async hold the mutex for
reading, while AsyncBarrier takes the lock for writing. This ensures that all
executing Async work finishes before AsyncBarrier returns.
Also pushes the Async() call from Inode.Release into
gofer/InodeOperations.Release(). This removes a recursive Async call which
should not have been allowed in the first place. The gofer Release call is the
slow one (since it may make RPCs to the gofer), so putting the Async call there
makes sense.
PiperOrigin-RevId: 223093067
Change-Id: I116da7b20fce5ebab8d99c2ab0f27db7c89d890e
With rpcinet if shutdown flags are not saved before making
the rpc a race is possible where blocked threads are woken
up before the flags have been persisted. This would mean
that threads can block indefinitely in a recvmsg after a
shutdown(SHUT_RD) has happened.
PiperOrigin-RevId: 223089783
Change-Id: If595e7add12aece54bcdf668ab64c570910d061a
RET_KILL_THREAD doesn't work well for Go because it will
kill only the offending thread and leave the process hanging.
RET_TRAP can be masked out and it's not guaranteed to kill
the process. RET_KILL_PROCESS is available since 4.14.
For older kernel, continue to use RET_TRAP as this is the
best option (likely to kill process, easy to debug).
PiperOrigin-RevId: 222357867
Change-Id: Icc1d7d731274b16c2125b7a1ba4f7883fbdb2cbd
We were relying on time.UnixNano, but that was causing collisions.
Now we generate 20 bytes of entropy from rand.Read, and base32-encode it to get
a valid container id.
PiperOrigin-RevId: 222313867
Change-Id: Iaeea9b9582d36de55f9f02f55de6a5de3f739371
SyncSyscallFiltersToThreadGroup and Task.TheadID() both acquired TaskSet RWLock
in R mode and could deadlock if a writer comes in between.
PiperOrigin-RevId: 222313551
Change-Id: I4221057d8d46fec544cbfa55765c9a284fe7ebfa
This can happen when destroy is called multiple times or when destroy
failed previously and is being called again.
PiperOrigin-RevId: 221882034
Change-Id: I8d069af19cf66c4e2419bdf0d4b789c5def8d19e
sandbox.Wait is racey, as the sandbox may have exited before it is called, or
even during.
We already had code to handle the case that the sandbox exits during the Wait
call, but we were not properly handling the case where the sandbox has exited
before the call.
The best we can do in such cases is return the sandbox exit code as the
application exit code.
PiperOrigin-RevId: 221702517
Change-Id: I290d0333cc094c7c1c3b4ce0f17f61a3e908d787
Also update test utilities for probing vsyscall support and add a
metric to see if vsyscalls are actually used in sandboxes.
PiperOrigin-RevId: 221698834
Change-Id: I57870ecc33ea8c864bd7437833f21aa1e8117477
Ian Gudger
Rahat Mahmood
Zach Koopmans
Zhaozhong Ni
Michael Pratt
Jamie Liu
Chris Kuiper
Brian Geffon
Nicolas Lacasse
Bin Lu
Googler
Ian Lewis
Kevin Krakauer
Haibo Xu
Fabricio Voznika
Adin Scannell