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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /hurd/ctty-output.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
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Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
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; - } -} |