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After bf959931ddb88c4e4366e96dd22e68fa0db9527c ("wait/ptrace: assume
__WALL if the child is traced") (Linux 4.7), tracees are always eligible
for waiting, regardless of type.
PiperOrigin-RevId: 250399527
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The original bug is no longer relevant, and the FIXME here
contains lots of obsolete information.
PiperOrigin-RevId: 249924036
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We don't need to model internal interfaces after the system
call interfaces (which are objectively worse and simply use a
flag to distinguish between two logically different operations).
PiperOrigin-RevId: 249916814
Change-Id: I45d02e0ec0be66b782a685b1f305ea027694cab9
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PiperOrigin-RevId: 249888234
Change-Id: Icfef32c3ed34809c34100c07e93e9581c786776e
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These wakers are uselessly allocated and passed around; nothing ever
listens for notifications on them. The code here appears to be
vestigial, so removing it and allowing a nil waker to be passed seems
appropriate.
PiperOrigin-RevId: 249879320
Change-Id: Icd209fb77cc0dd4e5c49d7a9f2adc32bf88b4b71
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sendfile can be called for a big range and it can require significant
amount of time to process it, so we need to handle task interrupts in
this system call.
PiperOrigin-RevId: 249781023
Change-Id: Ifc2ec505d74c06f5ee76f93b8d30d518ec2d4015
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Initialized BUILD with license
Mount is still unimplemented and is not meant to be
part of this CL. Rest of the fs interface is implemented.
Referenced the Linux kernel appropriately when needed
PiperOrigin-RevId: 249741997
Change-Id: Id1e4c7c9e68b3f6946da39896fc6a0c3dcd7f98c
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Separate MountSource from Mount. This is needed to allow
mounts to be shared by multiple containers within the same
pod.
PiperOrigin-RevId: 249617810
Change-Id: Id2944feb7e4194951f355cbe6d4944ae3c02e468
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gopark's signature was changed from having a string reason to a
uint8.
See: https://github.com/golang/go/commit/4d7cf3fedbc382215df5ff6167ee9782a9cc9375
This broke execution tracing of the sentry.
Switching to the right signature makes tracing work again.
Updates #220
PiperOrigin-RevId: 249565311
Change-Id: If77fd276cecb37d4003c8222f6de510b8031a074
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PiperOrigin-RevId: 249561399
Change-Id: Ic73c68c8538bdca53068f38f82b7260939addac2
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The previous commit adds WNOTHREAD support to waitid, so we may as well
complete the upstream change.
Linux added WCLONE, WALL, WNOTHREAD support to waitid(2) in
91c4e8ea8f05916df0c8a6f383508ac7c9e10dba ("wait: allow sys_waitid() to
accept __WNOTHREAD/__WCLONE/__WALL"). i.e., Linux 4.7.
PiperOrigin-RevId: 249560587
Change-Id: Iff177b0848a3f7bae6cb5592e44500c5a942fbeb
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There no obvious reason to require that BlockSize and StatFS
are MountSource operations. Today they are in INodeOperations,
and they can be moved elsewhere in the future as part of a
normal refactor process.
PiperOrigin-RevId: 249549982
Change-Id: Ib832e02faeaf8253674475df4e385bcc53d780f3
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PiperOrigin-RevId: 249537694
Change-Id: Iaa4bca73a2d8341e03064d59a2eb490afc3f80da
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PiperOrigin-RevId: 249511348
Change-Id: I34539092cc85032d9473ff4dd308fc29dc9bfd6b
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Updates #214
PiperOrigin-RevId: 249483756
Change-Id: I0d3cf4112bed75a863d5eb08c2063fbc506cd875
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Pipe internals are made more efficient by avoiding garbage collection.
A pool is now used that can be shared by all pipes, and buffers are
chained via an intrusive list. The documentation for pipe structures
and methods is also simplified and clarified.
The pipe tests are now parameterized, so that they are run on all
different variants (named pipes, small buffers, default buffers).
The pipe buffer sizes are exposed by fcntl, which is now supported
by this change. A size change test has been added to the suite.
These new tests uncovered a bug regarding the semantics of open
named pipes with O_NONBLOCK, which is also fixed by this CL. This
fix also addresses the lack of the O_LARGEFILE flag for named pipes.
PiperOrigin-RevId: 249375888
Change-Id: I48e61e9c868aedb0cadda2dff33f09a560dee773
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* A segment with filesz == 0, memsz > 0 should be an anonymous only
mapping. We were failing to load such an ELF.
* Anonymous pages are always mapped RW, regardless of the segment
protections.
PiperOrigin-RevId: 249355239
Change-Id: I251e5c0ce8848cf8420c3aadf337b0d77b1ad991
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This is in preparation to support an fdbased endpoint that can read/dispatch
packets from multiple underlying fds.
Updates #231
PiperOrigin-RevId: 249337074
Change-Id: Id7d375186cffcf55ae5e38986e7d605a96916d35
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This does not actually implement an efficient splice or sendfile. Rather, it
adds a generic plumbing to the file internals so that this can be added. All
file implementations use the stub fileutil.NoSplice implementation, which
causes sendfile and splice to fall back to an internal copy.
A basic splice system call interface is added, along with a test.
PiperOrigin-RevId: 249335960
Change-Id: Ic5568be2af0a505c19e7aec66d5af2480ab0939b
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Remove unused struct member.
PiperOrigin-RevId: 249300446
Change-Id: Ifb16538f684bc3200342462c3da927eb564bf52d
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The backing 9p server must allow named pipe creation, which the runsc
fsgofer currently does not.
There are small changes to the overlay here. GetFile may block when
opening a named pipe, which can cause a deadlock:
1. open(O_RDONLY) -> copyMu.Lock() -> GetFile()
2. open(O_WRONLY) -> copyMu.Lock() -> Deadlock
A named pipe usable for writing must already be on the upper filesystem,
but we are still taking copyMu for write when checking for upper. That
can be changed to a read lock to fix the common case.
However, a named pipe on the lower filesystem would still deadlock in
open(O_WRONLY) when it tries to actually perform copy up (which would
simply return EINVAL). Move the copy up type check before taking copyMu
for write to avoid this.
p9 must be modified, as it was incorrectly removing the file mode when
sending messages on the wire.
PiperOrigin-RevId: 249154033
Change-Id: Id6637130e567b03758130eb6c7cdbc976384b7d6
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* Creation of files, directories (and other fs objects) in a directory
should always update ctime.
* Same for removal.
* atime should not be updated on lookup, only readdir.
I've also renamed some misleading functions that update mtime and ctime.
PiperOrigin-RevId: 249115063
Change-Id: I30fa275fa7db96d01aa759ed64628c18bb3a7dc7
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This more directly matches what Linux does with unsupported
nodes.
PiperOrigin-RevId: 248780425
Change-Id: I17f3dd0b244f6dc4eb00e2e42344851b8367fbec
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There is a lot of redundancy that we can simplify in the stat_times
test. This will make it easier to add new tests. However, the
simplification reveals that cached uattrs on goferfs don't properly
update ctime on rename.
PiperOrigin-RevId: 248773425
Change-Id: I52662728e1e9920981555881f9a85f9ce04041cf
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PiperOrigin-RevId: 248437159
Change-Id: Ife71f6ca032fca59ec97a82961000ed0af257101
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PiperOrigin-RevId: 248411456
Change-Id: I21c3767b0b7e5948536d4c0b78be46ba35cf76cb
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PiperOrigin-RevId: 248263378
Change-Id: Ic057d2bb0b6212110f43ac4df3f0ac9bf931ab98
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PiperOrigin-RevId: 248249285
Change-Id: I9b6d267baa666798b22def590ff20c9a118efd47
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Otherwise changes of epoll_ctl will not have affect.
PiperOrigin-RevId: 247964961
Change-Id: I9fbb35c44766421af45d9ed53760e0c324d80d99
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PiperOrigin-RevId: 247667272
Change-Id: I16b04e11bb93f50b7e05e888992303f730e4a877
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Closes #225
PiperOrigin-RevId: 247508791
Change-Id: I04f47cf2770b30043e5a272aba4ba6e11d0476cc
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This was upstreamed from Fuchsia, but it is pretty buggy and doesn't
rely on any private APIs. Thus it can be checked into the Fuchsia source
tree without forking netstack, where we can more easily iterate on (and
eventually remove) it.
PiperOrigin-RevId: 247506582
Change-Id: Ifb1b60c6c4941c374a59c5570a6a9cacf2468981
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And stop storing the Filesystem in the MountSource.
This allows us to decouple the MountSource filesystem type from the name of the
filesystem.
PiperOrigin-RevId: 247292982
Change-Id: I49cbcce3c17883b7aa918ba76203dfd6d1b03cc8
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Testing:
Unit tests added
PiperOrigin-RevId: 247096269
Change-Id: I849c010eadcb53caf45896a15ef38162d66a9568
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Allows cancellation and timeouts.
PiperOrigin-RevId: 247090428
Change-Id: I91907f12e218677dcd0e0b6d72819deedbd9f20c
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Most are single line methods in hot paths.
PiperOrigin-RevId: 247050267
Change-Id: I428d78723fe00b57483185899dc8fa9e1f01e2ea
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PiperOrigin-RevId: 246921386
Change-Id: I71d8908858f45a9a33a0483470d0240eaf0fd012
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Some behavior was broken due to the difficulty of running automated raw
socket tests.
Change-Id: I152ca53916bb24a0208f2dc1c4f5bc87f4724ff6
PiperOrigin-RevId: 246747067
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Signed-off-by: Bin Lu <bin.lu@arm.com>
PiperOrigin-RevId: 246622505
Change-Id: I803639a0c5b0f75959c64fee5385314214834d10
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The tcpip.Clock comment stated that times provided by it should not be used for
netstack internal timekeeping. This comment was from before the interface
supported monotonic times. The monotonic times that it provides are now be the
preferred time source for netstack internal timekeeping.
PiperOrigin-RevId: 246618772
Change-Id: I853b720e3d719b03fabd6156d2431da05d354bda
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Fixes #219
PiperOrigin-RevId: 246568639
Change-Id: Ic7afd15dde922638d77f6429c508d1cbe2e4288a
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Testing:
Unit tests and also large ping in Fuchsia OS
PiperOrigin-RevId: 246563592
Change-Id: Ia12ab619f64f4be2c8d346ce81341a91724aef95
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Change-Id: Ifbd2abf63ea8062a89b83e948d3e9735480d8216
PiperOrigin-RevId: 246559904
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- include packet_list.go
- exclude state.go (by renaming to include an underscore)
Also rename raw.go to endpoint.go for consistency.
PiperOrigin-RevId: 246547912
Change-Id: I19c8331c794ba683a940cc96a8be6497b53ff24d
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PiperOrigin-RevId: 246536003
Change-Id: I118b745f45040be9c70cb6a1028acdb06c78d8c9
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Fixed a small logic error that broke proper accounting of MultiPortEndpoints.
PiperOrigin-RevId: 246502126
Change-Id: I1a7d6ea134f811612e545676212899a3707bc2c2
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This requires two changes:
1) Support for more than one socket to join a given multicast group.
2) Duplicate delivery of incoming multicast packets to all sockets listening
for it.
In addition, I tweaked the code (and added a test) to disallow duplicates
IP_ADD_MEMBERSHIP calls for the same group and NIC. This is how Linux does
it.
PiperOrigin-RevId: 246437315
Change-Id: Icad8300b4a8c3f501d9b4cd283bd3beabef88b72
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PiperOrigin-RevId: 246036806
Change-Id: I5554a43a1f8146c927402db3bf98488a2da0fbe7
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This feature allows MemoryFile to delay eviction of "optional"
allocations, such as unused cached file pages.
Note that this incidentally makes CachingInodeOperations writeback
asynchronous, in the sense that it doesn't occur until eviction; this is
necessary because between when a cached page becomes evictable and when
it's evicted, file writes (via CachingInodeOperations.Write) may dirty
the page.
As currently implemented, this feature won't meaningfully impact
steady-state memory usage or caching; the reclaimer goroutine will
schedule eviction as soon as it runs out of other work to do. Future CLs
increase caching by adding constraints on when eviction is scheduled.
PiperOrigin-RevId: 246014822
Change-Id: Ia85feb25a2de92a48359eb84434b6ec6f9bea2cb
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Updates google/gvisor#206
PiperOrigin-RevId: 245880573
Change-Id: Ifa715e98d47f64b8a32b04ae9378d6cd6bd4025e
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