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package fstestutil
import (
"regexp"
"syscall"
)
var re = regexp.MustCompile(`\\(.)`)
// unescape removes backslash-escaping. The escaped characters are not
// mapped in any way; that is, unescape(`\n` ) == `n`.
func unescape(s string) string {
return re.ReplaceAllString(s, `$1`)
}
// cstr converts a nil-terminated C string into a Go string
func cstr(ca []int8) string {
s := make([]byte, 0, len(ca))
for _, c := range ca {
if c == 0x00 {
break
}
s = append(s, byte(c))
}
return string(s)
}
func getMountInfo(mnt string) (*MountInfo, error) {
var st syscall.Statfs_t
err := syscall.Statfs(mnt, &st)
if err != nil {
return nil, err
}
i := &MountInfo{
// osx getmntent(3) fails to un-escape the data, so we do it..
// this might lead to double-unescaping in the future. fun.
// TestMountOptionFSNameEvilBackslashDouble checks for that.
FSName: unescape(cstr(st.Mntfromname[:])),
}
return i, nil
}
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