/
io.go
58 lines (49 loc) · 1.04 KB
/
io.go
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package common
// #include <linux/fs.h>
// #include <sys/ioctl.h>
// int ioctl_wrap(int fd, unsigned long op, int *flags) {
// return ioctl(fd, op, flags);
// }
import "C"
import (
"errors"
"io"
"os"
"unsafe"
)
const (
FS_IMMUTABLE_FL int = C.FS_IMMUTABLE_FL
FS_APPEND_FL int = C.FS_APPEND_FL
FS_NOATIME_FL int = C.FS_NOATIME_FL
)
// IsFileExists check if file exists
func IsFileExists(file string) bool {
_, err := os.Stat(file)
return !os.IsNotExist(err)
}
func ChAttr(file *os.File, attributes int) error {
ret, err := C.ioctl_wrap(C.int(file.Fd()), C.FS_IOC_SETFLAGS, (*C.int)(unsafe.Pointer(&attributes)))
if ret < 0 {
return errors.New("ioctl failed: " + err.Error())
}
return nil
}
func CopyFile(src string, dest string) error {
var srcFile, dstFile *os.File
var err error
srcFile, err = os.Open(src)
if err != nil {
return err
}
defer srcFile.Close()
dstFile, err = os.Create(dest)
if err != nil {
return err
}
defer dstFile.Close()
_, err = io.Copy(dstFile, srcFile)
if err != nil {
return err
}
return nil
}