/
walker_unix.go
52 lines (45 loc) · 911 Bytes
/
walker_unix.go
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// +build linux darwin freebsd openbsd netbsd
// +build !appengine
package walker
import (
"os"
"syscall"
)
func (w *walker) readdir(dirname string) error {
fd, err := syscall.Open(dirname, 0, 0)
if err != nil {
return &os.PathError{Op: "open", Path: dirname, Err: err}
}
defer syscall.Close(fd)
buf := make([]byte, 8<<10)
names := make([]string, 0, 100)
nbuf := 0
bufp := 0
for {
if bufp >= nbuf {
bufp = 0
nbuf, err = syscall.ReadDirent(fd, buf)
if err != nil {
return err
}
if nbuf <= 0 {
return nil
}
}
consumed, count, names := syscall.ParseDirent(buf[bufp:nbuf], 100, names[0:])
bufp += consumed
for _, name := range names[:count] {
fi, err := os.Lstat(dirname + "/" + name)
if os.IsNotExist(err) {
continue
}
if err != nil {
return err
}
if err = w.walk(dirname, fi); err != nil {
return err
}
}
}
return nil
}