From f44b2c1a4a7dda869ac9c8187da6b3e98cfff611 Mon Sep 17 00:00:00 2001
From: Richard Gooch <rg+github0@safe-mbox.com>
Date: Thu, 4 Apr 2019 11:28:45 -0700
Subject: [PATCH] Make lib/wsyscall compile for Windoze.

---
 lib/wsyscall/api.go              | 14 ++---------
 lib/wsyscall/wrappers_darwin.go  | 18 ++++++++++++++
 lib/wsyscall/wrappers_linux.go   | 18 ++++++++++++++
 lib/wsyscall/wrappers_windows.go | 40 ++++++++++++++++++++++++++++++++
 4 files changed, 78 insertions(+), 12 deletions(-)
 create mode 100644 lib/wsyscall/wrappers_windows.go

diff --git a/lib/wsyscall/api.go b/lib/wsyscall/api.go
index cd2f732b..692f1732 100644
--- a/lib/wsyscall/api.go
+++ b/lib/wsyscall/api.go
@@ -59,12 +59,7 @@ func Ioctl(fd int, request, argp uintptr) error {
 }
 
 func Lstat(path string, statbuf *Stat_t) error {
-	var rawStatbuf syscall.Stat_t
-	if err := syscall.Lstat(path, &rawStatbuf); err != nil {
-		return err
-	}
-	convertStat(statbuf, &rawStatbuf)
-	return nil
+	return lstat(path, statbuf)
 }
 
 func Mount(source string, target string, fstype string, flags uintptr,
@@ -89,12 +84,7 @@ func SetNetNamespace(fd int) error {
 }
 
 func Stat(path string, statbuf *Stat_t) error {
-	var rawStatbuf syscall.Stat_t
-	if err := syscall.Stat(path, &rawStatbuf); err != nil {
-		return err
-	}
-	convertStat(statbuf, &rawStatbuf)
-	return nil
+	return stat(path, statbuf)
 }
 
 func UnshareMountNamespace() error {
diff --git a/lib/wsyscall/wrappers_darwin.go b/lib/wsyscall/wrappers_darwin.go
index c4c77956..a4e72f31 100644
--- a/lib/wsyscall/wrappers_darwin.go
+++ b/lib/wsyscall/wrappers_darwin.go
@@ -22,6 +22,15 @@ func fallocate(fd int, mode uint32, off int64, len int64) error {
 	return syscall.ENOTSUP
 }
 
+func lstat(path string, statbuf *Stat_t) error {
+	var rawStatbuf syscall.Stat_t
+	if err := syscall.Lstat(path, &rawStatbuf); err != nil {
+		return err
+	}
+	convertStat(statbuf, &rawStatbuf)
+	return nil
+}
+
 func mount(source string, target string, fstype string, flags uintptr,
 	data string) error {
 	return syscall.ENOTSUP
@@ -72,6 +81,15 @@ func setNetNamespace(namespaceFd int) error {
 	return syscall.ENOTSUP
 }
 
+func stat(path string, statbuf *Stat_t) error {
+	var rawStatbuf syscall.Stat_t
+	if err := syscall.Stat(path, &rawStatbuf); err != nil {
+		return err
+	}
+	convertStat(statbuf, &rawStatbuf)
+	return nil
+}
+
 func unshareNetNamespace() (int, int, error) {
 	return -1, -1, syscall.ENOTSUP
 }
diff --git a/lib/wsyscall/wrappers_linux.go b/lib/wsyscall/wrappers_linux.go
index b493dfec..47a12cde 100644
--- a/lib/wsyscall/wrappers_linux.go
+++ b/lib/wsyscall/wrappers_linux.go
@@ -30,6 +30,15 @@ func fallocate(fd int, mode uint32, off int64, len int64) error {
 	return syscall.Fallocate(fd, mode, off, len)
 }
 
+func lstat(path string, statbuf *Stat_t) error {
+	var rawStatbuf syscall.Stat_t
+	if err := syscall.Lstat(path, &rawStatbuf); err != nil {
+		return err
+	}
+	convertStat(statbuf, &rawStatbuf)
+	return nil
+}
+
 func mount(source string, target string, fstype string, flags uintptr,
 	data string) error {
 	var linuxFlags uintptr
@@ -93,6 +102,15 @@ func setNetNamespace(namespaceFd int) error {
 
 }
 
+func stat(path string, statbuf *Stat_t) error {
+	var rawStatbuf syscall.Stat_t
+	if err := syscall.Stat(path, &rawStatbuf); err != nil {
+		return err
+	}
+	convertStat(statbuf, &rawStatbuf)
+	return nil
+}
+
 func unshareMountNamespace() error {
 	// Pin goroutine to OS thread. This hack is required because
 	// syscall.Unshare() operates on only one thread in the process, and Go
diff --git a/lib/wsyscall/wrappers_windows.go b/lib/wsyscall/wrappers_windows.go
new file mode 100644
index 00000000..4c11dfca
--- /dev/null
+++ b/lib/wsyscall/wrappers_windows.go
@@ -0,0 +1,40 @@
+package wsyscall
+
+import "syscall"
+
+func fallocate(fd int, mode uint32, off int64, len int64) error {
+	return syscall.ENOTSUP
+}
+
+func lstat(path string, statbuf *Stat_t) error {
+	return syscall.ENOTSUP
+}
+
+func mount(source string, target string, fstype string, flags uintptr,
+	data string) error {
+	return syscall.ENOTSUP
+}
+
+func getrusage(who int, rusage *Rusage) error {
+	return syscall.ENOTSUP
+}
+
+func setAllGid(gid int) error {
+	return syscall.ENOTSUP
+}
+
+func setAllUid(uid int) error {
+	return syscall.ENOTSUP
+}
+
+func setNetNamespace(namespaceFd int) error {
+	return syscall.ENOTSUP
+}
+
+func unshareNetNamespace() (int, int, error) {
+	return -1, -1, syscall.ENOTSUP
+}
+
+func unshareMountNamespace() error {
+	return syscall.ENOTSUP
+}