From 719a43ca3530c424c3875d8c066f7ab09195dfdc Mon Sep 17 00:00:00 2001
From: Frank Groeneveld <frank@ivaldi.nl>
Date: Fri, 18 Mar 2016 14:53:19 +0100
Subject: [PATCH] Cli binary can now be build on OpenBSD

Signed-off-by: Frank Groeneveld <frank@frankgroeneveld.nl>
---
 layer/layer_unix.go            |  2 +-
 pkg/system/stat_openbsd.go     | 15 ++++++++
 pkg/system/stat_unsupported.go |  2 +-
 pkg/term/termios_openbsd.go    | 69 ++++++++++++++++++++++++++++++++++
 4 files changed, 86 insertions(+), 2 deletions(-)
 create mode 100644 pkg/system/stat_openbsd.go
 create mode 100644 pkg/term/termios_openbsd.go

diff --git a/layer/layer_unix.go b/layer/layer_unix.go
index 524b97e8d1..d77e2fc66e 100644
--- a/layer/layer_unix.go
+++ b/layer/layer_unix.go
@@ -1,4 +1,4 @@
-// +build linux freebsd darwin
+// +build linux freebsd darwin openbsd
 
 package layer
 
diff --git a/pkg/system/stat_openbsd.go b/pkg/system/stat_openbsd.go
new file mode 100644
index 0000000000..3c3b71fb21
--- /dev/null
+++ b/pkg/system/stat_openbsd.go
@@ -0,0 +1,15 @@
+package system
+
+import (
+	"syscall"
+)
+
+// fromStatT creates a system.StatT type from a syscall.Stat_t type
+func fromStatT(s *syscall.Stat_t) (*StatT, error) {
+	return &StatT{size: s.Size,
+		mode: uint32(s.Mode),
+		uid:  s.Uid,
+		gid:  s.Gid,
+		rdev: uint64(s.Rdev),
+		mtim: s.Mtim}, nil
+}
diff --git a/pkg/system/stat_unsupported.go b/pkg/system/stat_unsupported.go
index c6075d4ff2..f53e9de4d1 100644
--- a/pkg/system/stat_unsupported.go
+++ b/pkg/system/stat_unsupported.go
@@ -1,4 +1,4 @@
-// +build !linux,!windows,!freebsd,!solaris
+// +build !linux,!windows,!freebsd,!solaris,!openbsd
 
 package system
 
diff --git a/pkg/term/termios_openbsd.go b/pkg/term/termios_openbsd.go
new file mode 100644
index 0000000000..ed843ad69c
--- /dev/null
+++ b/pkg/term/termios_openbsd.go
@@ -0,0 +1,69 @@
+package term
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+const (
+	getTermios = syscall.TIOCGETA
+	setTermios = syscall.TIOCSETA
+)
+
+// Termios magic numbers, passthrough to the ones defined in syscall.
+const (
+	IGNBRK = syscall.IGNBRK
+	PARMRK = syscall.PARMRK
+	INLCR  = syscall.INLCR
+	IGNCR  = syscall.IGNCR
+	ECHONL = syscall.ECHONL
+	CSIZE  = syscall.CSIZE
+	ICRNL  = syscall.ICRNL
+	ISTRIP = syscall.ISTRIP
+	PARENB = syscall.PARENB
+	ECHO   = syscall.ECHO
+	ICANON = syscall.ICANON
+	ISIG   = syscall.ISIG
+	IXON   = syscall.IXON
+	BRKINT = syscall.BRKINT
+	INPCK  = syscall.INPCK
+	OPOST  = syscall.OPOST
+	CS8    = syscall.CS8
+	IEXTEN = syscall.IEXTEN
+)
+
+// Termios is the Unix API for terminal I/O.
+type Termios struct {
+	Iflag  uint32
+	Oflag  uint32
+	Cflag  uint32
+	Lflag  uint32
+	Cc     [20]byte
+	Ispeed uint32
+	Ospeed uint32
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd uintptr) (*State, error) {
+	var oldState State
+	if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(&oldState.termios))); err != 0 {
+		return nil, err
+	}
+
+	newState := oldState.termios
+	newState.Iflag &^= (IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON)
+	newState.Oflag &^= OPOST
+	newState.Lflag &^= (ECHO | ECHONL | ICANON | ISIG | IEXTEN)
+	newState.Cflag &^= (CSIZE | PARENB)
+	newState.Cflag |= CS8
+	newState.Cc[syscall.VMIN] = 1
+	newState.Cc[syscall.VTIME] = 0
+
+	if _, _, err := syscall.Syscall(syscall.SYS_IOCTL, fd, uintptr(setTermios), uintptr(unsafe.Pointer(&newState))); err != 0 {
+		return nil, err
+	}
+
+	return &oldState, nil
+}