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Extract TreeSize to daemon build

TreeSize uses syscall.Stat_t which is not available on Windows.
It's called only on daemon path, therefore extracting it to daemon
with build tag 'daemon'

Signed-off-by: Ahmet Alp Balkan <ahmetb@microsoft.com>
This commit is contained in:
Ahmet Alp Balkan 2014-11-13 10:50:57 -08:00
parent 376ae7780b
commit b64c9b521a
3 changed files with 41 additions and 31 deletions

View file

@ -1,3 +1,5 @@
// +build daemon
package graphdriver
import (

View file

@ -18,7 +18,6 @@ import (
"strconv"
"strings"
"sync"
"syscall"
log "github.com/Sirupsen/logrus"
"github.com/docker/docker/dockerversion"
@ -453,36 +452,6 @@ func ReadSymlinkedDirectory(path string) (string, error) {
return realPath, nil
}
// TreeSize walks a directory tree and returns its total size in bytes.
func TreeSize(dir string) (size int64, err error) {
data := make(map[uint64]struct{})
err = filepath.Walk(dir, func(d string, fileInfo os.FileInfo, e error) error {
// Ignore directory sizes
if fileInfo == nil {
return nil
}
s := fileInfo.Size()
if fileInfo.IsDir() || s == 0 {
return nil
}
// Check inode to handle hard links correctly
inode := fileInfo.Sys().(*syscall.Stat_t).Ino
// inode is not a uint64 on all platforms. Cast it to avoid issues.
if _, exists := data[uint64(inode)]; exists {
return nil
}
// inode is not a uint64 on all platforms. Cast it to avoid issues.
data[uint64(inode)] = struct{}{}
size += s
return nil
})
return
}
// ValidateContextDirectory checks if all the contents of the directory
// can be read and returns an error if some files can't be read
// symlinks which point to non-existing files don't trigger an error

39
utils/utils_daemon.go Normal file
View file

@ -0,0 +1,39 @@
// +build daemon
package utils
import (
"os"
"path/filepath"
"syscall"
)
// TreeSize walks a directory tree and returns its total size in bytes.
func TreeSize(dir string) (size int64, err error) {
data := make(map[uint64]struct{})
err = filepath.Walk(dir, func(d string, fileInfo os.FileInfo, e error) error {
// Ignore directory sizes
if fileInfo == nil {
return nil
}
s := fileInfo.Size()
if fileInfo.IsDir() || s == 0 {
return nil
}
// Check inode to handle hard links correctly
inode := fileInfo.Sys().(*syscall.Stat_t).Ino
// inode is not a uint64 on all platforms. Cast it to avoid issues.
if _, exists := data[uint64(inode)]; exists {
return nil
}
// inode is not a uint64 on all platforms. Cast it to avoid issues.
data[uint64(inode)] = struct{}{}
size += s
return nil
})
return
}