github.com/hustcat/docker@v1.3.3-0.20160314103604-901c67a8eeab/pkg/archive/changes_unix.go (about)

     1  // +build !windows
     2  
     3  package archive
     4  
     5  import (
     6  	"os"
     7  	"syscall"
     8  
     9  	"github.com/docker/docker/pkg/system"
    10  )
    11  
    12  func statDifferent(oldStat *system.StatT, newStat *system.StatT) bool {
    13  	// Don't look at size for dirs, its not a good measure of change
    14  	if oldStat.Mode() != newStat.Mode() ||
    15  		oldStat.UID() != newStat.UID() ||
    16  		oldStat.GID() != newStat.GID() ||
    17  		oldStat.Rdev() != newStat.Rdev() ||
    18  		// Don't look at size for dirs, its not a good measure of change
    19  		(oldStat.Mode()&syscall.S_IFDIR != syscall.S_IFDIR &&
    20  			(!sameFsTimeSpec(oldStat.Mtim(), newStat.Mtim()) || (oldStat.Size() != newStat.Size()))) {
    21  		return true
    22  	}
    23  	return false
    24  }
    25  
    26  func (info *FileInfo) isDir() bool {
    27  	return info.parent == nil || info.stat.Mode()&syscall.S_IFDIR != 0
    28  }
    29  
    30  func getIno(fi os.FileInfo) uint64 {
    31  	return uint64(fi.Sys().(*syscall.Stat_t).Ino)
    32  }
    33  
    34  func hasHardlinks(fi os.FileInfo) bool {
    35  	return fi.Sys().(*syscall.Stat_t).Nlink > 1
    36  }