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Some versions of glibc will convert F_GETOWN fcntl(2) calls into F_GETOWN_EX in
some cases.
PiperOrigin-RevId: 284089373
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PiperOrigin-RevId: 284038840
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PiperOrigin-RevId: 284033820
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This change adds a type to represent the NDP Recursive DNS Server option, as
defined by RFC 8106 section 5.1.
PiperOrigin-RevId: 284005493
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PiperOrigin-RevId: 283828423
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If the socket is bound to ANY and connected to a loopback address,
getsockname() has to return the loopback address. Without this fix,
getsockname() returns ANY.
PiperOrigin-RevId: 283647781
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PiperOrigin-RevId: 283630669
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The code in rcv.consumeSegment incorrectly transitions to
CLOSED state from LAST-ACK before the final ACK for the FIN.
Further if receiving a segment changes a socket to a closed state
then we should not invoke the sender as the socket is now closed
and sending any segments is incorrect.
PiperOrigin-RevId: 283625300
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PiperOrigin-RevId: 283613824
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I have not seen a false positive stuck task yet.
Biggest offender was whitelistfs which is going away.
PiperOrigin-RevId: 283613064
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PiperOrigin-RevId: 283610781
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PiperOrigin-RevId: 283571456
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There are two potential ways of sending a TOS byte with outgoing packets:
including a control message in sendmsg, or setting the IP_TOS/IPV6_TCLASS
socket options (for IPV4 and IPV6 respectively). This change lets hostinet
support the latter.
Fixes #1188
PiperOrigin-RevId: 283550925
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There are two potential ways of sending a TOS byte with outgoing packets:
including a control message in sendmsg, or setting the IP_TOS/IPV6_TCLASS
socket options (for IPV4 and IPV6 respectively). This change lets hostinet
support the former.
PiperOrigin-RevId: 283346737
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This change does not introduce any new features, or modify existing ones.
This change tests handling TCP segments right away for connections that were
completed from a listening endpoint.
PiperOrigin-RevId: 282986457
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This involves allowing getsockopt/setsockopt for the corresponding socket
options, as well as allowing hostinet to process control messages received from
the actual recvmsg syscall.
PiperOrigin-RevId: 282851425
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This allows writable proc and devices files to be opened with O_CREAT|O_TRUNC.
This is encountered most frequently when interacting with proc or devices files
via the command line.
e.g. $ echo 8192 1048576 4194304 > /proc/sys/net/ipv4/tcp_rmem
Also adds a test to test the behavior of open(O_TRUNC), truncate, and ftruncate
on named pipes.
Fixes #1116
PiperOrigin-RevId: 282677425
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PiperOrigin-RevId: 282667122
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- Remove the Filesystem argument from DentryImpl.*Ref(); in general DentryImpls
that need the Filesystem for reference counting will probably also need it
for other interface methods that don't plumb Filesystem, so it's easier to
just store a pointer to the filesystem in the DentryImpl.
- Add a pointer to the VirtualFilesystem to Filesystem, which is needed by the
gofer client to disown dentries for cache eviction triggered by dentry
reference count changes.
- Rename FilesystemType.NewFilesystem to GetFilesystem; in some cases (e.g.
sysfs, cgroupfs) it's much cleaner for there to be only one Filesystem that
is used by all mounts, and in at least one case (devtmpfs) it's visibly
incorrect not to do so, so NewFilesystem doesn't always actually create and
return a *new* Filesystem.
- Require callers of FileDescription.Init() to increment Mount/Dentry
references. This is because the gofer client may, in the OpenAt() path, take
a reference on a dentry with 0 references, which is safe due to
synchronization that is outside the scope of this CL, and it would be safer
to still have its implementation of DentryImpl.IncRef() check for an
increment for 0 references in other cases.
- Add FileDescription.TryIncRef. This is used by the gofer client to take
references on "special file descriptions" (FDs for files such as pipes,
sockets, and devices), which use per-FD handles (fids) instead of
dentry-shared handles, for sync() and syncfs().
PiperOrigin-RevId: 282473364
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This is required to test filesystems with a non-trivial implementation of
FilesystemImpl.Release(). Propagation isn't handled yet, and umount isn't yet
plumbed out to VirtualFilesystem.UmountAt(), but otherwise the implementation
of umount is believed to be correct.
- Move entering mountTable.seq writer critical sections to callers of
mountTable.{insert,remove}Seqed. This is required since umount(2) must ensure
that no new references are taken on the candidate mount after checking that
it isn't busy, which is only possible by entering a vfs.mountTable.seq writer
critical section before the check and remaining in it until after
VFS.umountRecursiveLocked() is complete. (Linux does the same thing:
fs/namespace.c:do_umount() => lock_mount_hash(),
fs/pnode.c:propagate_mount_busy(), umount_tree(), unlock_mount_hash().)
- It's not possible for dentry deletion to umount while only holding
VFS.mountMu for reading, but it's also very unappealing to hold VFS.mountMu
exclusively around e.g. gofer unlink RPCs. Introduce dentry.mu to avoid these
problems. This means that VFS.mountMu is never acquired for reading, so
change it to a sync.Mutex.
PiperOrigin-RevId: 282444343
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PiperOrigin-RevId: 282396322
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PiperOrigin-RevId: 282382564
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These are necessary for iptables to read and parse headers for packet filtering.
PiperOrigin-RevId: 282372811
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Packets written via SOCK_RAW are guaranteed to have network headers, but not
transport headers. Check first whether there are enough bytes left in the packet
to contain a transport header before attempting to parse it.
PiperOrigin-RevId: 282363895
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PiperOrigin-RevId: 282194656
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PiperOrigin-RevId: 282068093
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This allows us to ensure that the correct port reservation is released.
Fixes #1217
PiperOrigin-RevId: 282048155
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