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PiperOrigin-RevId: 297638665
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PiperOrigin-RevId: 297494373
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PiperOrigin-RevId: 297492004
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Analogous to Linux's kern_mount().
PiperOrigin-RevId: 297259580
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MayDelete must lock the directory also, otherwise concurrent renames may
race. Note that this also changes the methods to be aligned with the actual
Remove and RemoveDirectory methods to minimize confusion when reading the
code. (It was hard to see that resolution was correct.)
PiperOrigin-RevId: 297258304
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PiperOrigin-RevId: 297230721
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PiperOrigin-RevId: 297220008
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PiperOrigin-RevId: 297192390
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PiperOrigin-RevId: 297191168
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pipe and pipe2 aren't ported, pending a slight rework of pipe FDs for VFS2.
mount and umount2 aren't ported out of temporary laziness. access and faccessat
need additional FSImpl methods to implement properly, but are stubbed to
prevent googletest from CHECK-failing. Other syscalls require additional
plumbing.
Updates #1623
PiperOrigin-RevId: 297188448
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PiperOrigin-RevId: 297175316
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Fixes #1049
PiperOrigin-RevId: 297175164
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Each mount is holds a reference on a root Dirent, but the mount itself may
live beyond it's own reference. This means that a call to Root() can come
after the associated reference has been dropped.
Instead of introducing a separate layer of references for mount objects,
we simply change the Root() method to use TryIncRef() and allow it to return
nil if the mount is already gone. This requires updating a small number of
callers and minimizes the change (since VFSv2 will replace this code shortly).
PiperOrigin-RevId: 297174230
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PiperOrigin-RevId: 296526279
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TCP/IP will work with netstack networking. hostinet doesn't work, and sockets
will have the same behavior as it is now.
Before the userspace is able to create device, the default loopback device can
be used to test.
/proc/net and /sys/net will still be connected to the root network stack; this
is the same behavior now.
Issue #1833
PiperOrigin-RevId: 296309389
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Users of the API only care about whether the copy in/out succeeds in
their entirety, which is already signalled by the returned error.
PiperOrigin-RevId: 296297843
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Example:
epoll_ctl(0x3 anon_inode:[eventpoll], EPOLL_CTL_ADD, 0x6 anon_inode:[eventfd], 0x7efe2fd92a80 {events=EPOLLIN|EPOLLOUT data=0x10203040506070a}) = 0x0 (4.411µs)
epoll_wait(0x3 anon_inode:[eventpoll], 0x7efe2fd92b50 {{events=EPOLLOUT data=0x102030405060708}{events=EPOLLOUT data=0x102030405060708}{events=EPOLLOUT data=0x102030405060708}}, 0x3, 0xffffffff) = 0x3 (29.891µs)
PiperOrigin-RevId: 296258146
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tmpfs.fileDescription now implements ConfigureMMap. And tmpfs.regularFile
implement memmap.Mappable. The methods are mostly unchanged from VFS1 tmpfs.
PiperOrigin-RevId: 296234557
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Consistent with QEMU, getUserRegisters() should be an arch-specific
function. So, it should be called in dieArchSetup().
With this patch and the pagetable/pcid patch, the kvm modules on Arm64 can be
built successfully.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 296088213
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Added the ability to get/set the IP_RECVTCLASS socket option on UDP endpoints.
If enabled, traffic class from the incoming Network Header passed as ancillary
data in the ControlMessages.
Adding Get/SetSockOptBool to decrease the overhead of getting/setting simple
options. (This was absorbed in a CL that will be landing before this one).
Test:
* Added unit test to udp_test.go that tests getting/setting as well as
verifying that we receive expected TOS from incoming packet.
* Added a syscall test for verifying getting/setting
* Removed test skip for existing syscall test to enable end to end test.
PiperOrigin-RevId: 295840218
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- Redocument memory ordering from "no ordering" to "acquire-release". (No
functional change: both LOCK WHATEVER on x86, and LDAXR/STLXR loops on ARM64,
already have this property.)
- Remove IncUnlessZeroInt32 and DecUnlessOneInt32, which were only faster than
the equivalent loops using sync/atomic before the Go compiler inlined
non-unsafe.Pointer atomics many releases ago.
PiperOrigin-RevId: 295811743
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PiperOrigin-RevId: 295785052
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PiperOrigin-RevId: 295770717
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glibc defines struct epoll_event in such a way that epoll_event.data.fd exists.
However, the kernel's definition of struct epoll_event makes epoll_event.data
an opaque uint64, so naming half of it "fd" just introduces confusion. Remove
the Fd field, and make Data a [2]int32 to compensate.
Also add required padding to linux.EpollEvent on ARM64.
PiperOrigin-RevId: 295250424
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This is to fix a data race between sending an external signal to
a ThreadGroup and kernel saving state for S/R.
PiperOrigin-RevId: 295244281
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