Note that in VFS2, filesystem device numbers are per-vfs.FilesystemImpl rather
than global, avoiding the need for a "registry" type to handle save/restore.
(This is more consistent with Linux anyway: compare e.g.
mm/shmem.c:shmem_mount() => fs/super.c:mount_nodev() => (indirectly)
set_anon_super().)
PiperOrigin-RevId: 291425193
Go 1.14+ sends SIGURG to Ms to attempt asynchronous preemption of a G. Since it
can't guarantee that a SIGURG is only related to preemption, it continues to
forward them to signal.Notify (see runtime.sighandler).
We should ignore these signals, as applications shouldn't receive them. Note
that this means that truly external SIGURG can no longer be sent to the
application (as with SIGCHLD).
PiperOrigin-RevId: 291415357
The kernel may return EINTR from:
kvm_create_vm
kvm_init_mmu_notifier
mmu_notifier_register
do_mmu_notifier_register
mm_take_all_locks
Go 1.14's preemptive scheduling signals make hitting this much more likely.
PiperOrigin-RevId: 291212669
Also renames TMutex to Mutex.
These custom mutexes aren't any worse than the standard library versions (same
code), so having both seems redundant.
PiperOrigin-RevId: 290873587
Such a stat accounts for all connections that are currently
established and not yet transitioned to close state.
Also fix bug in double increment of CurrentEstablished stat.
Fixes#1579
PiperOrigin-RevId: 290827365
Note that these simply will use the same logic as getxattr and setxattr, which
is not yet implemented for most filesystems.
PiperOrigin-RevId: 290800960
Java 11 parses /proc/self/mountinfo for cgroup information. Java 11.0.4 uses
the mount path to determine what cgroups existed, but Java 11.0.5 reads the
cgroup names from the superblock options.
This CL adds the cgroup name to the superblock options if the filesystem type
is "cgroup". Since gVisor doesn't actually support cgroups yet, we just infer
the cgroup name from the path.
PiperOrigin-RevId: 290434323
CERT Advisory CA-96.21 III. Solution advises that devices drop packets which
could not have correctly arrived on the wire, such as receiving a packet where
the source IP address is owned by the device that sent it.
Fixes#1507
PiperOrigin-RevId: 290378240
x86 and arm64 use a different stat struct in Linux
kernel, so the stat() syscall implementation has
to handle the file stat data separately.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: If3986e915a667362257a54e7fbbcc1fe18951015
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/1493 from xiaobo55x:stat f15a216d9297eb9a96d2c483d396a9919145d7fa
PiperOrigin-RevId: 290274287
There was a very bare get/setxattr in the InodeOperations interface. Add
context.Context to both, size to getxattr, and flags to setxattr.
Note that extended attributes are passed around as strings in this
implementation, so size is automatically encoded into the value. Size is
added in getxattr so that implementations can return ERANGE if a value is larger
than can fit in the user-allocated buffer. This prevents us from unnecessarily
passing around an arbitrarily large xattr when the user buffer is actually too
small.
Don't use the existing xattrwalk and xattrcreate messages and define our
own, mainly for the sake of simplicity.
Extended attributes will be implemented in future commits.
PiperOrigin-RevId: 290121300
sys_clone has many flavors in Linux, and amd64 chose
a different one from x86(different arguments order).
Ref kernel/fork.c for more info.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I6c8cbc685f4a6e786b171715ab68292fc95cbf48
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/1545 from xiaobo55x:clone 156bd2dfbc63ef5291627b0578ddea77997393b2
PiperOrigin-RevId: 290093953
Signed-off-by: Bin Lu <bin.lu@arm.com>
Change-Id: I9cce23db4e5caec82ce42b4970fdb7f7e8c08f1d
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/773 from lubinszARM:pr_arch_basic 3fe2fd8e6286766bbe489ef971dce204f924feba
PiperOrigin-RevId: 289795569