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Get initial Windows compilation working.

OS specific syscalls (mknod) and structs (Stat_t) are separated out.
Common unix functionality is collected in a node_unix.go file.
Direct use of syscall.Stat_t is replaced with an interface.
This commit is contained in:
klauspost 2015-08-12 15:03:23 +02:00
parent b7fb50b8d9
commit d8a512ccf6
7 changed files with 160 additions and 56 deletions

71
node.go
View file

@ -245,15 +245,15 @@ func (node Node) createSymlinkAt(path string) error {
}
func (node *Node) createDevAt(path string) error {
return syscall.Mknod(path, syscall.S_IFBLK|0600, int(node.Device))
return mknod(path, syscall.S_IFBLK|0600, int(node.Device))
}
func (node *Node) createCharDevAt(path string) error {
return syscall.Mknod(path, syscall.S_IFCHR|0600, int(node.Device))
return mknod(path, syscall.S_IFCHR|0600, int(node.Device))
}
func (node *Node) createFifoAt(path string) error {
return syscall.Mkfifo(path, 0600)
return mkfifo(path, 0600)
}
func (node Node) MarshalJSON() ([]byte, error) {
@ -381,9 +381,19 @@ func (node *Node) isNewer(path string, fi os.FileInfo) bool {
return true
}
extendedStat := fi.Sys().(*syscall.Stat_t)
inode := extendedStat.Ino
size := uint64(extendedStat.Size)
size := uint64(fi.Size())
extendedStat, ok := toStatT(fi.Sys())
if !ok {
if node.ModTime != fi.ModTime() ||
node.Size != size {
debug.Log("node.isNewer", "node %v is newer: timestamp, size or inode changed", path)
return true
}
return false
}
inode := extendedStat.ino()
if node.ModTime != fi.ModTime() ||
node.ChangeTime != changeTime(extendedStat) ||
@ -397,11 +407,11 @@ func (node *Node) isNewer(path string, fi os.FileInfo) bool {
return false
}
func (node *Node) fillUser(stat *syscall.Stat_t) error {
node.UID = stat.Uid
node.GID = stat.Gid
func (node *Node) fillUser(stat statT) error {
node.UID = stat.uid()
node.GID = stat.gid()
username, err := lookupUsername(strconv.Itoa(int(stat.Uid)))
username, err := lookupUsername(strconv.Itoa(int(stat.uid())))
if err != nil {
return errors.Annotate(err, "fillUser")
}
@ -439,12 +449,12 @@ func lookupUsername(uid string) (string, error) {
}
func (node *Node) fillExtra(path string, fi os.FileInfo) error {
stat, ok := fi.Sys().(*syscall.Stat_t)
stat, ok := toStatT(fi.Sys())
if !ok {
return nil
}
node.Inode = uint64(stat.Ino)
node.Inode = uint64(stat.ino())
node.fillTimes(stat)
@ -456,15 +466,15 @@ func (node *Node) fillExtra(path string, fi os.FileInfo) error {
switch node.Type {
case "file":
node.Size = uint64(stat.Size)
node.Links = uint64(stat.Nlink)
node.Size = uint64(stat.size())
node.Links = uint64(stat.nlink())
case "dir":
case "symlink":
node.LinkTarget, err = os.Readlink(path)
case "dev":
node.Device = uint64(stat.Rdev)
node.Device = uint64(stat.rdev())
case "chardev":
node.Device = uint64(stat.Rdev)
node.Device = uint64(stat.rdev())
case "fifo":
case "socket":
default:
@ -473,3 +483,32 @@ func (node *Node) fillExtra(path string, fi os.FileInfo) error {
return err
}
type statT interface {
dev() uint64
ino() uint64
nlink() uint64
uid() uint32
gid() uint32
rdev() uint64
size() int64
atim() syscall.Timespec
mtim() syscall.Timespec
ctim() syscall.Timespec
}
func mkfifo(path string, mode uint32) (err error) {
return mknod(path, mode|syscall.S_IFIFO, 0)
}
func (node *Node) fillTimes(stat statT) {
ctim := stat.ctim()
atim := stat.atim()
node.ChangeTime = time.Unix(ctim.Unix())
node.AccessTime = time.Unix(atim.Unix())
}
func changeTime(stat statT) time.Time {
ctim := stat.ctim()
return time.Unix(ctim.Unix())
}

View file

@ -3,22 +3,16 @@ package restic
import (
"os"
"syscall"
"time"
)
func (node *Node) OpenForReading() (*os.File, error) {
return os.Open(node.path)
}
func changeTime(stat *syscall.Stat_t) time.Time {
return time.Unix(stat.Ctimespec.Unix())
}
func (node *Node) fillTimes(stat *syscall.Stat_t) {
node.ChangeTime = time.Unix(stat.Ctimespec.Unix())
node.AccessTime = time.Unix(stat.Atimespec.Unix())
}
func (node Node) restoreSymlinkTimestamps(path string, utimes [2]syscall.Timespec) error {
return nil
}
func (s statUnix) atim() syscall.Timespec { return s.Atimespec }
func (s statUnix) mtim() syscall.Timespec { return s.Mtimespec }
func (s statUnix) ctim() syscall.Timespec { return s.Ctimespec }

View file

@ -3,22 +3,16 @@ package restic
import (
"os"
"syscall"
"time"
)
func (node *Node) OpenForReading() (*os.File, error) {
return os.OpenFile(node.path, os.O_RDONLY, 0)
}
func (node *Node) fillTimes(stat *syscall.Stat_t) {
node.ChangeTime = time.Unix(stat.Ctimespec.Unix())
node.AccessTime = time.Unix(stat.Atimespec.Unix())
}
func changeTime(stat *syscall.Stat_t) time.Time {
return time.Unix(stat.Ctimespec.Unix())
}
func (node Node) restoreSymlinkTimestamps(path string, utimes [2]syscall.Timespec) error {
return nil
}
func (s statUnix) atim() syscall.Timespec { return s.Atimespec }
func (s statUnix) mtim() syscall.Timespec { return s.Mtimespec }
func (s statUnix) ctim() syscall.Timespec { return s.Ctimespec }

View file

@ -4,7 +4,6 @@ import (
"os"
"path/filepath"
"syscall"
"time"
"unsafe"
"github.com/juju/errors"
@ -18,15 +17,6 @@ func (node *Node) OpenForReading() (*os.File, error) {
return file, err
}
func (node *Node) fillTimes(stat *syscall.Stat_t) {
node.ChangeTime = time.Unix(stat.Ctim.Unix())
node.AccessTime = time.Unix(stat.Atim.Unix())
}
func changeTime(stat *syscall.Stat_t) time.Time {
return time.Unix(stat.Ctim.Unix())
}
func (node Node) restoreSymlinkTimestamps(path string, utimes [2]syscall.Timespec) error {
dir, err := os.Open(filepath.Dir(path))
defer dir.Close()
@ -65,3 +55,7 @@ func utimensat(dirfd int, path string, times *[2]syscall.Timespec, flags int) (e
func utimesNanoAt(dirfd int, path string, ts [2]syscall.Timespec, flags int) (err error) {
return utimensat(dirfd, path, (*[2]syscall.Timespec)(unsafe.Pointer(&ts[0])), flags)
}
func (s statUnix) atim() syscall.Timespec { return s.Atim }
func (s statUnix) mtim() syscall.Timespec { return s.Mtim }
func (s statUnix) ctim() syscall.Timespec { return s.Ctim }

View file

@ -3,7 +3,6 @@ package restic
import (
"os"
"syscall"
"time"
)
func (node *Node) OpenForReading() (*os.File, error) {
@ -14,15 +13,10 @@ func (node *Node) OpenForReading() (*os.File, error) {
return file, err
}
func (node *Node) fillTimes(stat *syscall.Stat_t) {
node.ChangeTime = time.Unix(stat.Ctim.Unix())
node.AccessTime = time.Unix(stat.Atim.Unix())
}
func changeTime(stat *syscall.Stat_t) time.Time {
return time.Unix(stat.Ctim.Unix())
}
func (node Node) restoreSymlinkTimestamps(path string, utimes [2]syscall.Timespec) error {
return nil
}
func (s statUnix) atim() syscall.Timespec { return s.Atim }
func (s statUnix) mtim() syscall.Timespec { return s.Mtim }
func (s statUnix) ctim() syscall.Timespec { return s.Ctim }

28
node_unix.go Normal file
View file

@ -0,0 +1,28 @@
//
// +build dragonfly linux netbsd openbsd solaris darwin
package restic
var mknod = syscall.Mknod
type statUnix syscall.Stat_t
func toStatT(i interface{}) (statT, bool) {
if i == nil {
return nil, false
}
s, ok := i.(syscall.Stat_t)
if ok && s != nil {
return statUnix(*s), true
}
return nil, false
}
func (s statUnix) dev() uint64 { return s.Dev }
func (s statUnix) ino() uint64 { return s.Ino }
func (s statUnix) nlink() uint64 { return s.Nlink }
func (s statUnix) uid() uint32 { return s.Uid }
func (s statUnix) gid() uint32 { return s.Gid }
func (s statUnix) rdev() uint64 { return s.Rdev }
func (s statUnix) size() int64 { return s.Size }

61
node_windows.go Normal file
View file

@ -0,0 +1,61 @@
package restic
import (
"os"
"syscall"
)
func (node *Node) OpenForReading() (*os.File, error) {
file, err := os.OpenFile(node.path, os.O_RDONLY, 0)
if os.IsPermission(err) {
return os.OpenFile(node.path, os.O_RDONLY, 0)
}
return file, err
}
// mknod() creates a filesystem node (file, device
// special file, or named pipe) named pathname, with attributes
// specified by mode and dev.
var mknod = func(path string, mode uint32, dev int) (err error) {
panic("mknod not implemented")
}
func (node Node) restoreSymlinkTimestamps(path string, utimes [2]syscall.Timespec) error {
return nil
}
type statWin syscall.Win32FileAttributeData
func toStatT(i interface{}) (statT, bool) {
if i == nil {
return nil, false
}
s, ok := i.(*syscall.Win32FileAttributeData)
if ok && s != nil {
return statWin(*s), true
}
return nil, false
}
func (s statWin) dev() uint64 { return 0 }
func (s statWin) ino() uint64 { return 0 }
func (s statWin) nlink() uint64 { return 0 }
func (s statWin) uid() uint32 { return 0 }
func (s statWin) gid() uint32 { return 0 }
func (s statWin) rdev() uint64 { return 0 }
func (s statWin) size() int64 {
return int64(s.FileSizeLow) | (int64(s.FileSizeHigh) << 32)
}
func (s statWin) atim() syscall.Timespec {
return syscall.NsecToTimespec(s.LastAccessTime.Nanoseconds())
}
func (s statWin) mtim() syscall.Timespec {
return syscall.NsecToTimespec(s.LastWriteTime.Nanoseconds())
}
func (s statWin) ctim() syscall.Timespec {
return syscall.NsecToTimespec(s.CreationTime.Nanoseconds())
}