Age | Commit message (Collapse) | Author |
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Refactor fs/host.TTYFileOperations so that the relevant functionality can be
shared with VFS2 (fsimpl/host.ttyFD).
Incorporate host.defaultFileFD into the default host.fileDescription. This way,
there is no need for a separate default_file.go. As in vfs1, the TTY file
implementation can be built on top of this default and override operations as
necessary (PRead/Read/PWrite/Write, Release, Ioctl).
Note that these changes still need to be plumbed into runsc, which refers to
imported TTYs in control/proc.go:ExecAsync.
Updates #1672.
PiperOrigin-RevId: 301718157
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PiperOrigin-RevId: 301700868
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It was looking at VFS1 table to determine where to
allocate the next FD from.
Updates #1035
PiperOrigin-RevId: 301678858
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PiperOrigin-RevId: 301402181
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FDTable.setAll is used to zap entries, but it grows the table up to
a specified fd.
Reported-by: syzbot+9e281b0750d2d4caa190@syzkaller.appspotmail.com
PiperOrigin-RevId: 301280000
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Updates #1035
PiperOrigin-RevId: 301255357
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Only gofer filesystem was calling vfs.CheckSetStat for
vfs.FilesystemImpl.SetStatAt and vfs.FileDescriptionImpl.SetStat.
Updates #1193, #1672, #1197
PiperOrigin-RevId: 301226522
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PiperOrigin-RevId: 301197007
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Updates #1195, #1193
PiperOrigin-RevId: 300950993
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- When setting up the virtual filesystem, mount a host.filesystem to contain
all files that need to be imported.
- Make read/preadv syscalls to the host in cases where preadv2 may not be
supported yet (likewise for writing).
- Make save/restore functions in kernel/kernel.go return early if vfs2 is
enabled.
PiperOrigin-RevId: 300922353
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Closes #1195
PiperOrigin-RevId: 300867055
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This will give more information about the file to
identify where possibly the extra DecRef()
would be.
PiperOrigin-RevId: 300855874
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PiperOrigin-RevId: 300845134
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- Make oomScoreAdj a ThreadGroup field (Linux: signal_struct::oom_score_adj).
- Avoid deadlock caused by Task.OOMScoreAdj()/SetOOMScoreAdj() locking Task.mu
and TaskSet.mu in the wrong order (via Task.ExitState()).
PiperOrigin-RevId: 300814698
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PiperOrigin-RevId: 300803515
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Note that the raw faccessat system call does not actually take a flags argument;
according to faccessat(2), the glibc wrapper implements the flags by using
fstatat(2). Remove the flag argument that we try to extract from vfs1, which
would just be a garbage value.
Updates #1965
Fixes #2101
PiperOrigin-RevId: 300796067
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2aa9514a06a5e34894e606d508ac2df53b082c74 skips SIGURG, but later code expects
the sigchans array contains consecutive signal numbers.
PiperOrigin-RevId: 300793450
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Plumbs MS_NOEXEC and MS_RDONLY. Others are TODO.
Updates #1623 #1193
PiperOrigin-RevId: 300764669
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This issue was caused by 'restart_syscall'.
The value of Register R0 should be stored after finishing sysemu.
So that we can restore the value and restart syscall.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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This fixes a compile time error:
pkg/sentry/platform/kvm/bluepill_arm64_unsafe.go:45:35: undefined: unsafe
PiperOrigin-RevId: 300375687
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PiperOrigin-RevId: 300362789
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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).
When runsc is running a container, there are three processes: a parent process
and two children (sandbox and gopher). A parent process sets a signal handler
for all signals and redirect them to the container init process. This logic
should ignore SIGURG signals. We already ignore them in the Sentry, but it will
be better to not notify about them when this is possible.
PiperOrigin-RevId: 300345286
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PiperOrigin-RevId: 300270894
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Issue #1833
PiperOrigin-RevId: 299998105
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Linux use the task.thread.uw.tp_value field to store the
TLS pointer on arm64 platform, and we use a similar way
in gvisor to store it in the arch/State struct.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: Ie76b5c6d109bc27ccfd594008a96753806db7764
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PiperOrigin-RevId: 299448307
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