terminal-util: introduce openpt_allocate()

Allocating a pty is done in a couple of places so let's introduce a new helper
which does the job.

Also the new function, as well as openpt_in_namespace(), returns both pty
master and slave so the callers don't need to know about the pty slave
allocation details.

For the same reasons machine_openpt() prototype has also been changed to return
both pty master and slave so callers don't need to allocate a pty slave which
might be in a different namespace.

Finally openpt_in_namespace() has been renamed into
openpt_allocate_in_namespace().

1 files changed, 1 insertions, 1 deletions

diff --git a/src/machine/machine.h b/src/machine/machine.h
index 9ff9a65671..f7471be8f5 100644
--- a/src/machine/machine.h
+++ b/src/machine/machine.h
@@ -89,7 +89,7 @@ MachineState machine_state_from_string(const char *s) _pure_;
 const char *kill_who_to_string(KillWho k) _const_;
 KillWho kill_who_from_string(const char *s) _pure_;
 
-int machine_openpt(Machine *m, int flags);
+int machine_openpt(Machine *m, int flags, char **ret_slave);
 int machine_open_terminal(Machine *m, const char *path, int mode);
 
 int machine_get_uid_shift(Machine *m, uid_t *ret);