diff options
Diffstat (limited to 'hurd/ctty-output.c')
-rw-r--r-- | hurd/ctty-output.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/hurd/ctty-output.c b/hurd/ctty-output.c deleted file mode 100644 index 357adb6563..0000000000 --- a/hurd/ctty-output.c +++ /dev/null @@ -1,84 +0,0 @@ -/* _hurd_ctty_output -- Do an output RPC and generate SIGTTOU if necessary. - Copyright (C) 1995-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <hurd.h> -#include <hurd/signal.h> - -/* Call *RPC on PORT and/or CTTY. If a call on CTTY returns EBACKGROUND, - generate SIGTTOU if appropriate. */ - -error_t -_hurd_ctty_output (io_t port, io_t ctty, error_t (*rpc) (io_t)) -{ - if (ctty == MACH_PORT_NULL) - return (*rpc) (port); - else - { - struct hurd_sigstate *ss = _hurd_self_sigstate (); - error_t err; - - do - { - /* Don't use the ctty io port if we are blocking or ignoring - SIGTTOU. We redo this check at the top of the loop in case - the signal handler changed the state. */ - __spin_lock (&ss->lock); - if (__sigismember (&ss->blocked, SIGTTOU) || - ss->actions[SIGTTOU].sa_handler == SIG_IGN) - err = EIO; - else - err = 0; - __spin_unlock (&ss->lock); - - if (err) - return (*rpc) (port); - - err = (*rpc) (ctty); - if (err == EBACKGROUND) - { - if (_hurd_orphaned) - /* Our process group is orphaned, so we never generate a - signal; we just fail. */ - err = EIO; - else - { - /* Send a SIGTTOU signal to our process group. - - We must remember here not to clobber ERR, since - the loop condition below uses it to recall that - we should retry after a stop. */ - - __USEPORT (CTTYID, _hurd_sig_post (0, SIGTTOU, port)); - /* XXX what to do if error here? */ - - /* At this point we should have just run the handler for - SIGTTOU or resumed after being stopped. Now this is - still a "system call", so check to see if we should - restart it. */ - __spin_lock (&ss->lock); - if (!(ss->actions[SIGTTOU].sa_flags & SA_RESTART)) - err = EINTR; - __spin_unlock (&ss->lock); - } - } - /* If the last RPC generated a SIGTTOU, loop to try it again. */ - } while (err == EBACKGROUND); - - return err; - } -} |