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authorTakashi Yano <takashi.yano@nifty.ne.jp>2021-12-15 06:25:58 +0300
committerTakashi Yano <takashi.yano@nifty.ne.jp>2021-12-15 06:25:58 +0300
commit80f4b7d5456ea17d64998805fb3d64db091201fc (patch)
tree9635f3daf79741b9fbaee8285c2089c38220c50d
parent0795f704f750e4b441aa256b1b849e4ebe3af684 (diff)
Cygwin: pty: Fix input switching failure.
- This patch fixes the failure of input switching between io_handle and io_handle_nat. This very rarely happens, however, input is wrongly switched to io_handle_nat even though the non-cygwin app is in the background.
-rw-r--r--winsup/cygwin/fhandler_tty.cc3
-rw-r--r--winsup/cygwin/tty.cc3
2 files changed, 5 insertions, 1 deletions
diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index ee687d9ad..c8ad53cb7 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -1056,6 +1056,7 @@ fhandler_pty_slave::set_switch_to_pcon (void)
isHybrid = true;
setup_locale ();
myself->exec_dwProcessId = myself->dwProcessId;
+ myself->process_state |= PID_NEW_PG; /* Marker for pcon_fg */
bool nopcon = (disable_pcon || !term_has_pcon_cap (NULL));
WaitForSingleObject (pcon_mutex, INFINITE);
bool pcon_enabled = setup_pseudoconsole (nopcon);
@@ -1168,6 +1169,7 @@ fhandler_pty_slave::reset_switch_to_pcon (void)
}
}
myself->exec_dwProcessId = 0;
+ myself->process_state &= ~PID_NEW_PG;
isHybrid = false;
}
}
@@ -2272,6 +2274,7 @@ fhandler_pty_master::write (const void *ptr, size_t len)
_pinfo *p = pids[i];
if (p->ctty == get_ttyp ()->ntty
&& p->pgid == get_ttyp ()->getpgid ()
+ && (p->process_state & PID_NOTCYGWIN)
&& (p->process_state & PID_NEW_PG))
{
wpid = p->dwProcessId;
diff --git a/winsup/cygwin/tty.cc b/winsup/cygwin/tty.cc
index 2566f4c45..11ad3ec51 100644
--- a/winsup/cygwin/tty.cc
+++ b/winsup/cygwin/tty.cc
@@ -392,7 +392,8 @@ tty::pcon_fg (pid_t pgid)
for (unsigned i = 0; i < pids.npids; i++)
{
_pinfo *p = pids[i];
- if (p->ctty == ntty && p->pgid == pgid && p->exec_dwProcessId)
+ if (p->ctty == ntty && p->pgid == pgid
+ && (p->process_state & (PID_NOTCYGWIN | PID_NEW_PG)))
return true;
}
if (pgid > MAX_PID)