68 lines
1.3 KiB
Go
68 lines
1.3 KiB
Go
package fileutils
|
|
|
|
import (
|
|
"os"
|
|
"syscall"
|
|
"testing"
|
|
)
|
|
|
|
type device struct {
|
|
device string
|
|
major uint64
|
|
minor uint64
|
|
}
|
|
|
|
func TestDeviceNumbers(t *testing.T) {
|
|
devices := []device{
|
|
{
|
|
device: "/dev/mem",
|
|
major: 1,
|
|
minor: 1,
|
|
},
|
|
{
|
|
device: "/dev/urandom",
|
|
major: 1,
|
|
minor: 9,
|
|
},
|
|
{
|
|
device: "/dev/tty0",
|
|
major: 4,
|
|
minor: 0,
|
|
},
|
|
{
|
|
device: "/dev/tty",
|
|
major: 5,
|
|
minor: 0,
|
|
},
|
|
}
|
|
|
|
for _, device := range devices {
|
|
si, err := os.Lstat(device.device)
|
|
if err != nil {
|
|
t.Errorf("not able to Lstat the device: %v", err)
|
|
}
|
|
|
|
st, ok := si.Sys().(*syscall.Stat_t)
|
|
|
|
if !ok {
|
|
t.Errorf("could not convert to syscall.Stat_t")
|
|
}
|
|
|
|
internalDevice := uint64(st.Rdev)
|
|
|
|
givenMajor := major(internalDevice)
|
|
if givenMajor != device.major {
|
|
t.Errorf("%s major not matching - expected: %d - given: %d", device.device, device.major, givenMajor)
|
|
}
|
|
|
|
givenMinor := minor(internalDevice)
|
|
if givenMinor != device.minor {
|
|
t.Errorf("%s minor not matching - expected: %d - given: %d", device.device, device.minor, givenMinor)
|
|
}
|
|
|
|
givenMkdev := mkdev(int64(device.major), int64(device.minor))
|
|
if givenMkdev != uint32(internalDevice) {
|
|
t.Errorf("%s mkdev not matching - expected: %d - given: %d", device.device, uint32(internalDevice), givenMkdev)
|
|
}
|
|
}
|
|
}
|