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utils.go
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/
utils.go
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package container
import (
"os"
"path"
"syscall"
)
func intSliceToUintptr(s []int) []uintptr {
var r []uintptr
if len(s) > 0 {
r = make([]uintptr, len(s))
for i, x := range s {
r[i] = uintptr(x)
}
}
return r
}
func uintptrSliceToInt(s []uintptr) []int {
var r []int
if len(s) > 0 {
r = make([]int, len(s))
for i, x := range s {
r[i] = int(x)
}
}
return r
}
func closeOnExecFds(s []int) {
for _, f := range s {
syscall.CloseOnExec(f)
}
}
func closeFds(s []int) {
for _, f := range s {
syscall.Close(f)
}
}
// removeContents delete content of a directory
func removeContents(dir string) error {
d, err := os.Open(dir)
if err != nil {
return err
}
defer d.Close()
names, err := d.Readdirnames(-1)
if err != nil {
return err
}
for _, name := range names {
err = os.RemoveAll(path.Join(dir, name))
if err != nil {
return err
}
}
return nil
}