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restic/node_linux.go
2015-04-29 03:31:07 +00:00

73 lines
1.5 KiB
Go

package restic
import (
"fmt"
"os"
"os/user"
"strconv"
"syscall"
"time"
)
func (node *Node) OpenForReading() (*os.File, error) {
file, err := os.OpenFile(node.path, os.O_RDONLY|syscall.O_NOATIME, 0)
if os.IsPermission(err) {
return os.OpenFile(node.path, os.O_RDONLY, 0)
}
return file, err
}
func (node *Node) fillExtra(path string, fi os.FileInfo) error {
stat, ok := fi.Sys().(*syscall.Stat_t)
if !ok {
return nil
}
node.ChangeTime = time.Unix(stat.Ctim.Unix())
node.AccessTime = time.Unix(stat.Atim.Unix())
node.UID = stat.Uid
node.GID = stat.Gid
if u, err := user.LookupId(strconv.Itoa(int(stat.Uid))); err == nil {
node.User = u.Username
}
node.Inode = stat.Ino
var err error
switch node.Type {
case "file":
node.Size = uint64(stat.Size)
node.Links = uint64(stat.Nlink)
case "dir":
case "symlink":
node.LinkTarget, err = os.Readlink(path)
case "dev":
node.Device = stat.Rdev
case "chardev":
node.Device = stat.Rdev
case "fifo":
case "socket":
default:
err = fmt.Errorf("invalid node type %q", node.Type)
}
return err
}
func (node *Node) createDevAt(path string) error {
return syscall.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))
}
func (node *Node) createFifoAt(path string) error {
return syscall.Mkfifo(path, 0600)
}
func changeTime(stat *syscall.Stat_t) time.Time {
return time.Unix(stat.Ctim.Unix())
}