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* DevNotes: Add entry cgf-000022.

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* cygtls.h (_cygtls::func): Define as a sa_sigaction style function.
* exceptions.cc (sig_handle_tty_stop): Ditto.
(_cygtls::interrupt_setup): Fix coercion to accommodate 'func' change.
(ctrl_c_handler): Use tty kill_pgrp to send a signal.
(sigpacket::process): Don't process sigflush here.
(_cygtls::call_signal_handler): Reorganize to avoid a race.  Always call
sa_sigaction style function.
* fhandler_termios.cc (is_flush_sig): Define new function.
(tty_min::kill_pgrp): Handle tty flush when signal detected.
(fhandler_termios::bg_check): Be slightly more paranoid about checking for
valid tty.
(fhandler_termios::sigflush): Don't flush unless tty owner.
* fhandler_tty.cc (fhandler_pty_slave::ioctl): Use tty kill_pgrp to send
signal.
(fhandler_pty_master::ioctl): Ditto.
* signal.cc (killsys): Delete definition.
* sigproc.h (killsys): Delete declaration.
* include/cygwin/signal.h (siginfo_t): Simplify union/struct nesting slightly.
Implement mechanism to allow cygwin data passing.
This commit is contained in:
Christopher Faylor
2013-01-31 05:26:47 +00:00
parent 3371f4c714
commit 118e51be1d
9 changed files with 100 additions and 68 deletions
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16
winsup/cygwin/fhandler_termios.cc
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@@ -114,14 +114,23 @@ fhandler_pty_master::tcgetpgrp ()
return tc ()->pgid;
}
static inline bool
is_flush_sig (int sig)
{
return sig == SIGINT || sig == SIGQUIT || sig == SIGTSTP;
}
void
tty_min::kill_pgrp (int sig)
{
bool killself = false;
if (is_flush_sig (sig) && cygheap->ctty)
cygheap->ctty->sigflush ();
winpids pids ((DWORD) PID_MAP_RW);
siginfo_t si = {0};
si.si_signo = sig;
si.si_code = SI_KERNEL;
for (unsigned i = 0; i < pids.npids; i++)
{
_pinfo *p = pids[i];
@@ -163,7 +172,7 @@ tty_min::is_orphaned_process_group (int pgid)
bg_check_types
fhandler_termios::bg_check (int sig)
{
if (!myself->pgid || tc ()->getpgid () == myself->pgid ||
if (!myself->pgid || !tc () || tc ()->getpgid () == myself->pgid ||
myself->ctty != tc ()->ntty ||
((sig == SIGTTOU) && !(tc ()->ti.c_lflag & TOSTOP)))
return bg_ok;
@@ -396,8 +405,9 @@ fhandler_termios::sigflush ()
/* FIXME: Checking get_ttyp() for NULL is not right since it should not
be NULL while this is alive. However, we can conceivably close a
ctty while exiting and that will zero this. */
if ((!have_execed || have_execed_cygwin) && get_ttyp ()
&& !(get_ttyp ()->ti.c_lflag & NOFLSH))
if ((!have_execed || have_execed_cygwin) && tc ()
&& (tc ()->getpgid () == myself->pgid)
&& !(tc ()->ti.c_lflag & NOFLSH))
tcflush (TCIFLUSH);
}