diff options
Diffstat (limited to 'src/cmd/vendor/golang.org/x/sys/unix/syscall_linux.go')
| -rw-r--r-- | src/cmd/vendor/golang.org/x/sys/unix/syscall_linux.go | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/src/cmd/vendor/golang.org/x/sys/unix/syscall_linux.go b/src/cmd/vendor/golang.org/x/sys/unix/syscall_linux.go index c8d2032125..ecb0f27fb8 100644 --- a/src/cmd/vendor/golang.org/x/sys/unix/syscall_linux.go +++ b/src/cmd/vendor/golang.org/x/sys/unix/syscall_linux.go @@ -1499,18 +1499,13 @@ func KeyctlRestrictKeyring(ringid int, keyType string, restriction string) error //sys keyctlRestrictKeyringByType(cmd int, arg2 int, keyType string, restriction string) (err error) = SYS_KEYCTL //sys keyctlRestrictKeyring(cmd int, arg2 int) (err error) = SYS_KEYCTL -func recvmsgRaw(fd int, p, oob []byte, flags int, rsa *RawSockaddrAny) (n, oobn int, recvflags int, err error) { +func recvmsgRaw(fd int, iov []Iovec, oob []byte, flags int, rsa *RawSockaddrAny) (n, oobn int, recvflags int, err error) { var msg Msghdr msg.Name = (*byte)(unsafe.Pointer(rsa)) msg.Namelen = uint32(SizeofSockaddrAny) - var iov Iovec - if len(p) > 0 { - iov.Base = &p[0] - iov.SetLen(len(p)) - } var dummy byte if len(oob) > 0 { - if len(p) == 0 { + if emptyIovecs(iov) { var sockType int sockType, err = GetsockoptInt(fd, SOL_SOCKET, SO_TYPE) if err != nil { @@ -1518,15 +1513,19 @@ func recvmsgRaw(fd int, p, oob []byte, flags int, rsa *RawSockaddrAny) (n, oobn } // receive at least one normal byte if sockType != SOCK_DGRAM { - iov.Base = &dummy - iov.SetLen(1) + var iova [1]Iovec + iova[0].Base = &dummy + iova[0].SetLen(1) + iov = iova[:] } } msg.Control = &oob[0] msg.SetControllen(len(oob)) } - msg.Iov = &iov - msg.Iovlen = 1 + if len(iov) > 0 { + msg.Iov = &iov[0] + msg.SetIovlen(len(iov)) + } if n, err = recvmsg(fd, &msg, flags); err != nil { return } @@ -1535,18 +1534,15 @@ func recvmsgRaw(fd int, p, oob []byte, flags int, rsa *RawSockaddrAny) (n, oobn return } -func sendmsgN(fd int, p, oob []byte, ptr unsafe.Pointer, salen _Socklen, flags int) (n int, err error) { +func sendmsgN(fd int, iov []Iovec, oob []byte, ptr unsafe.Pointer, salen _Socklen, flags int) (n int, err error) { var msg Msghdr msg.Name = (*byte)(ptr) msg.Namelen = uint32(salen) - var iov Iovec - if len(p) > 0 { - iov.Base = &p[0] - iov.SetLen(len(p)) - } var dummy byte + var empty bool if len(oob) > 0 { - if len(p) == 0 { + empty = emptyIovecs(iov) + if empty { var sockType int sockType, err = GetsockoptInt(fd, SOL_SOCKET, SO_TYPE) if err != nil { @@ -1554,19 +1550,22 @@ func sendmsgN(fd int, p, oob []byte, ptr unsafe.Pointer, salen _Socklen, flags i } // send at least one normal byte if sockType != SOCK_DGRAM { - iov.Base = &dummy - iov.SetLen(1) + var iova [1]Iovec + iova[0].Base = &dummy + iova[0].SetLen(1) } } msg.Control = &oob[0] msg.SetControllen(len(oob)) } - msg.Iov = &iov - msg.Iovlen = 1 + if len(iov) > 0 { + msg.Iov = &iov[0] + msg.SetIovlen(len(iov)) + } if n, err = sendmsg(fd, &msg, flags); err != nil { return 0, err } - if len(oob) > 0 && len(p) == 0 { + if len(oob) > 0 && empty { n = 0 } return n, nil |