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Fixing accept/accept4 and pipe syscall values.

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Updates #4805

PiperOrigin-RevId: 458527328
This commit is contained in:
Shambhavi Srivastava
2022-07-01 12:59:06 -07:00
committed by gVisor bot
parent dba08ba26f
commit 81414d79c3
1 changed files with 8 additions and 4 deletions
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pkg/sentry/syscalls/linux/points.go
+8 -4
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@@ -402,7 +402,7 @@ func pipeHelper(t *kernel.Task, cxtData *pb.ContextData, info kernel.SyscallInfo
if info.Exit {
if pipeFDAddr := info.Args[0].Pointer(); pipeFDAddr != 0 {
var pipeFDs [2]int32
if _, err := primitive.CopyInt32SliceOut(t, pipeFDAddr, pipeFDs[2:2]); err == nil { // if NO error
if _, err := primitive.CopyInt32SliceIn(t, pipeFDAddr, pipeFDs[:]); err == nil { // if NO error
p.Reader = pipeFDs[0]
p.Writer = pipeFDs[1]
}
@@ -602,9 +602,13 @@ func acceptHelper(t *kernel.Task, fields seccheck.FieldSet, cxtData *pb.ContextD
Flags: flags,
}
addr := info.Args[1].Pointer()
addrLen := info.Args[2].Uint()
if address, err := CaptureAddress(t, addr, addrLen); err == nil { // if NO error
p.Address = address
if addrLenPointer := info.Args[2].Pointer(); addrLenPointer != 0 {
var addrLen uint32
if _, err := primitive.CopyUint32In(t, addrLenPointer, &addrLen); err == nil { // if NO error
if address, err := CaptureAddress(t, addr, addrLen); err == nil { // if NO error
p.Address = address
}
}
}
if fields.Local.Contains(seccheck.FieldSyscallPath) {