diff options
| author | Andrei Vagin <avagin@google.com> | 2020-08-03 22:06:46 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-08-03 22:08:25 -0700 |
| commit | 25798f214c6d1991916906ea8fca9e7029a8c423 (patch) | |
| tree | e2240d0174da0d95a0a19660ea8c2bb0ebbf0082 /pkg/sentry/kernel/ptrace.go | |
| parent | b5c9ff81922ba785d83eaccc464b0b15a8120798 (diff) | |
Add callbacks to support lazy loading/restoring thread states
PiperOrigin-RevId: 324748508
Diffstat (limited to 'pkg/sentry/kernel/ptrace.go')
| -rw-r--r-- | pkg/sentry/kernel/ptrace.go | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/pkg/sentry/kernel/ptrace.go b/pkg/sentry/kernel/ptrace.go index e23e796ef..6c03d9041 100644 --- a/pkg/sentry/kernel/ptrace.go +++ b/pkg/sentry/kernel/ptrace.go @@ -1018,6 +1018,9 @@ func (t *Task) Ptrace(req int64, pid ThreadID, addr, data usermem.Addr) error { if err != nil { return err } + + t.p.PullFullState(t.MemoryManager().AddressSpace(), t.Arch()) + ar := ars.Head() n, err := target.Arch().PtraceGetRegSet(uintptr(addr), &usermem.IOReadWriter{ Ctx: t, @@ -1044,10 +1047,14 @@ func (t *Task) Ptrace(req int64, pid ThreadID, addr, data usermem.Addr) error { if err != nil { return err } + + mm := t.MemoryManager() + t.p.PullFullState(mm.AddressSpace(), t.Arch()) + ar := ars.Head() n, err := target.Arch().PtraceSetRegSet(uintptr(addr), &usermem.IOReadWriter{ Ctx: t, - IO: t.MemoryManager(), + IO: mm, Addr: ar.Start, Opts: usermem.IOOpts{ AddressSpaceActive: true, @@ -1056,6 +1063,7 @@ func (t *Task) Ptrace(req int64, pid ThreadID, addr, data usermem.Addr) error { if err != nil { return err } + t.p.FloatingPointStateChanged() ar.End -= usermem.Addr(n) return t.CopyOutIovecs(data, usermem.AddrRangeSeqOf(ar)) |