Adding upstream version 1.65.7.

Signed-off-by: Daniel Baumann <daniel@debian.org>

ioutil_illumos.go

@@ -0,0 +1,70 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE-GO file.
+
+// Modifications Copyright 2020 The Libc Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package libc // import "modernc.org/libc"
+
+import (
+	"fmt"
+	"os"
+	"sync"
+	"time"
+	"unsafe"
+	// "golang.org/x/sys/unix"
+	// "modernc.org/libc/errno"
+	// "modernc.org/libc/fcntl"
+)
+
+// Random number state.
+// We generate random temporary file names so that there's a good
+// chance the file doesn't exist yet - keeps the number of tries in
+// TempFile to a minimum.
+var randState uint32
+var randStateMu sync.Mutex
+
+func reseed() uint32 {
+	return uint32(time.Now().UnixNano() + int64(os.Getpid()))
+}
+
+func nextRandom(x uintptr) {
+	randStateMu.Lock()
+	r := randState
+	if r == 0 {
+		r = reseed()
+	}
+	r = r*1664525 + 1013904223 // constants from Numerical Recipes
+	randState = r
+	randStateMu.Unlock()
+	copy((*RawMem)(unsafe.Pointer(x))[:6:6], fmt.Sprintf("%06d", int(1e9+r%1e9)%1e6))
+}
+
+func tempFile(s, x uintptr, flags int32) (fd int, err error) {
+	panic(todo(""))
+	// const maxTry = 10000
+	// nconflict := 0
+	// flags |= int32(os.O_RDWR | os.O_CREATE | os.O_EXCL | unix.O_LARGEFILE)
+	// for i := 0; i < maxTry; i++ {
+	// 	nextRandom(x)
+	// 	fdcwd := fcntl.AT_FDCWD
+	// 	n, _, err := unix.Syscall6(unix.SYS_OPENAT, uintptr(fdcwd), s, uintptr(flags), 0600, 0, 0)
+	// 	if err == 0 {
+	// 		return int(n), nil
+	// 	}
+
+	// 	if err != errno.EEXIST {
+	// 		return -1, err
+	// 	}
+
+	// 	if nconflict++; nconflict > 10 {
+	// 		randStateMu.Lock()
+	// 		randState = reseed()
+	// 		nconflict = 0
+	// 		randStateMu.Unlock()
+	// 	}
+	// }
+	// return -1, unix.Errno(errno.EEXIST)
+}