dnsmasq requires the use of tabs

Signed-off-by: baude <bbaude@redhat.com>

when podman passes us aliases, we need to make sure we pass this onto
the dnsmasq file so container name resolution will honor them.

Signed-off-by: baude <bbaude@redhat.com>

enable to work from a rootless environment.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

trying to get the cirrus billing and vms to perk up

Signed-off-by: Brent Baude <bbaude@redhat.com>

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Golang`s `os.FindProcess()` always returns success on UNIX machines -
even when the PID doesn't exist.  Hence, add a lookup in the proc FS
to check if the given exists or not.  That's okay since dnsmane is
targetting Linux only.

Also rename the method to `getProcess()` and add some comments.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Make the error handling consistent by:

* Using github.com/pkg/errors to wrap errors before returning.
* Having consistent format specifiers for logs.
* Using `fmt.Errorf()` for non-wrapping errors.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Split the logic to acquire the disk locks into a separate method
`dnsNameLock.acquire() error` to make the API more flexible and
less prone to errors.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

Signed-off-by: baude <bbaude@redhat.com>