diff options
Diffstat (limited to 'winsup/cygwin/fhandler_tty.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_tty.cc | 37 |
1 files changed, 26 insertions, 11 deletions
diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc index 7e8254c3c..30b6dda09 100644 --- a/winsup/cygwin/fhandler_tty.cc +++ b/winsup/cygwin/fhandler_tty.cc @@ -531,7 +531,8 @@ fhandler_tty_slave::open (int flags, mode_t) goto err_no_errno; } - if (cygserver_running == CYGSERVER_UNAVAIL + if (myself->pid == get_ttyp ()->master_pid + || cygserver_running == CYGSERVER_UNAVAIL || !cygserver_attach_tty (&from_master_local, &to_master_local)) { if (get_ttyp ()->master_pid < 0) @@ -547,15 +548,24 @@ fhandler_tty_slave::open (int flags, mode_t) set_errno (EAGAIN); goto err_no_errno; } - termios_printf ("cannot dup handles via server. using old method."); - HANDLE tty_owner = OpenProcess (PROCESS_DUP_HANDLE, FALSE, - p->dwProcessId); - if (tty_owner == NULL) + HANDLE tty_owner; + if (myself->pid == get_ttyp ()->master_pid) { - termios_printf ("can't open tty (%d) handle process %d", - get_unit (), get_ttyp ()->master_pid); - __seterrno (); - goto err_no_msg; + /* This is the most common case, just calling openpty. */ + termios_printf ("dup handles within myself."); + tty_owner = GetCurrentProcess (); + } + else + { + termios_printf ("cannot dup handles via server. using old method."); + tty_owner = OpenProcess (PROCESS_DUP_HANDLE, FALSE, p->dwProcessId); + if (tty_owner == NULL) + { + termios_printf ("can't open tty (%d) handle process %d", + get_unit (), get_ttyp ()->master_pid); + __seterrno (); + goto err_no_msg; + } } if (!DuplicateHandle (tty_owner, get_ttyp ()->from_master, @@ -577,7 +587,8 @@ fhandler_tty_slave::open (int flags, mode_t) goto err; } VerifyHandle (to_master_local); - CloseHandle (tty_owner); + if (tty_owner != GetCurrentProcess ()) + CloseHandle (tty_owner); } termios_printf ("duplicated from_master %p->%p from tty_owner", @@ -655,7 +666,11 @@ fhandler_tty_slave::cygserver_attach_tty (LPHANDLE from_master_ptr, if (!from_master_ptr || !to_master_ptr) return 0; - client_request_attach_tty req ((DWORD) get_ttyp ()->master_pid, + pinfo p (get_ttyp ()->master_pid); + if (!p) + return 0; + + client_request_attach_tty req (p->dwProcessId, (HANDLE) get_ttyp ()->from_master, (HANDLE) get_ttyp ()->to_master); |