// flags and shouldn't be considered as replacement
// for os.OpenFile().
func LockedOpenFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
	return lockedOpenFile(path, flag, perm, 0)
}

// Open - Call os.OpenFile
func Open(path string, flag int, perm os.FileMode) (*os.File, error) {
	return os.OpenFile(path, flag, perm)

// Copyright 2018 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 file.

//go:build aix

package runtime

const (
	_EPERM     = 0x1
	_ENOENT    = 0x2
	_EINTR     = 0x4
	_EAGAIN    = 0xb
	_ENOMEM    = 0xc
	_EACCES    = 0xd
	_EFAULT    = 0xe
	_EINVAL    = 0x16
	_ETIMEDOUT = 0x4e

	_PROT_NONE  = 0x0
	_PROT_READ  = 0x1

	[]int{4, 2, 1, 3, 0},                // Perm(5)
	[]int{0, 2, 3, 1, 5, 4, 6, 7},       // Perm(8)
	[]int{2, 0, 8, 3, 4, 7, 6, 5, 1},    // Perm(9)
	[]int{0, 6, 5, 3, 8, 4, 1, 2, 9, 7}, // Perm(10)
	[]int{9, 14, 4, 11, 13, 8, 0, 6, 2, 12, 3, 7, 1, 10, 5, 15}, // Perm(16)
	[]int{},                             // Perm(0)
	[]int{0},                            // Perm(1)
	[]int{2, 4, 0, 3, 1},                // Perm(5)

	"strings"
	"time"
)

func Example_writerReader() {
	var buf bytes.Buffer
	zw := gzip.NewWriter(&buf)

	// Setting the Header fields is optional.
	zw.Name = "a-new-hope.txt"
	zw.Comment = "an epic space opera by George Lucas"
	zw.ModTime = time.Date(1977, time.May, 25, 0, 0, 0, 0, time.UTC)

	_, err := zw.Write([]byte("A long time ago in a galaxy far, far away..."))
	if err != nil {
		log.Fatal(err)
	}

	VX     d3, d1, d1  \
	VERLLF $7, a1, a1  \
	VERLLF $7, b1, b1  \
	VERLLF $7, c1, c1  \
	VERLLF $7, d1, d1

#define PERMUTE(mask, v0, v1, v2, v3) \
	VPERM v0, v0, mask, v0 \
	VPERM v1, v1, mask, v1 \
	VPERM v2, v2, mask, v2 \
	VPERM v3, v3, mask, v3

#define ADDV(x, v0, v1, v2, v3) \
	VAF x, v0, v0 \
	VAF x, v1, v1 \
	VAF x, v2, v2 \
	VAF x, v3, v3

	}

	// EISDIR means that we have a directory, and we need to
	// remove its contents.
	// EPERM or EACCES means that we don't have write permission on
	// the parent directory, but this entry might still be a directory
	// whose contents need to be removed.
	// Otherwise just return the error.
	if err != syscall.EISDIR && err != syscall.EPERM && err != syscall.EACCES {
		return &PathError{Op: "unlinkat", Path: base, Err: err}
	}
	uErr := err

		 *
		 * Linux will still error if we ask for user attributes on a file that
		 * we don't have read permissions on, so don't ignore those errors
		 */
		if e != nil {
			if e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
				continue
			}
			return s, e
		}

		s += stmp
		pos = s
		if pos > destsiz {
			pos = destsiz
		}
	}

	return s, nil
}

			if op, ok := err.(*net.OpError); ok {
				err = op.Err
			}
			if sys, ok := err.(*os.SyscallError); ok {
				err = sys.Err
			}
			switch err {
			case syscall.EPERM, syscall.EINVAL:
			default:
				t.Fatalf("WriteMsgUnix failed with %v, want EPERM or EINVAL", err)
			}
		}

		ucred.Pid = int32(os.Getpid())
		ucred.Uid = uint32(os.Getuid())
		ucred.Gid = uint32(os.Getgid())
		oob := syscall.UnixCredentials(&ucred)

		return nil
	case EAGAIN:
		return errEAGAIN
	case EINVAL:
		return errEINVAL
	case ENOENT:
		return errENOENT
	}
	return e
}

var errnoByCode = map[string]Errno{
	"EPERM":           EPERM,
	"ENOENT":          ENOENT,
	"ESRCH":           ESRCH,
	"EINTR":           EINTR,
	"EIO":             EIO,
	"ENXIO":           ENXIO,
	"E2BIG":           E2BIG,
	"ENOEXEC":         ENOEXEC,

	ENOSR
	ENOSTR
	ENOSYS
	ENOTBLK
	ENOTCONN
	ENOTEMPTY
	ENOTNAM
	ENOTRECOVERABLE
	ENOTSOCK
	ENOTSUP
	ENOTTY
	ENOTUNIQ
	ENXIO
	EOPNOTSUPP
	EOVERFLOW
	EOWNERDEAD
	EPERM
	EPFNOSUPPORT
	EPIPE
	EPROTO
	EPROTONOSUPPORT
	EPROTOTYPE
	ERANGE
	EREMCHG
	EREMOTE
	EREMOTEIO
	ERESTART
	EROFS
	ESHUTDOWN
	ESOCKTNOSUPPORT
	ESPIPE
	ESRCH
	ESRMNT