[PATCH] Cygwin: pty: Fix handle leak in master process.
Takashi Yano
takashi.yano@nifty.ne.jp
Tue Feb 13 14:29:23 GMT 2024
If non-cygwin process is started in pty, closing from_master_nat
pipe handle was missing in fhandler_pty_slave::input_transfer().
This occured because the handle was duplicated but not closed.
https://github.com/msys2/msys2-runtime/issues/198
Fixes: 29431fcb5b14 ("Cygwin: pty: Inherit typeahead data between two input pipes.")
Reported-by: Hakkin Lain
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
---
winsup/cygwin/fhandler/pty.cc | 1 +
winsup/cygwin/release/3.5.1 | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/winsup/cygwin/fhandler/pty.cc b/winsup/cygwin/fhandler/pty.cc
index 3f4bc56b5..c5c792144 100644
--- a/winsup/cygwin/fhandler/pty.cc
+++ b/winsup/cygwin/fhandler/pty.cc
@@ -3995,6 +3995,7 @@ fhandler_pty_slave::transfer_input (tty::xfer_dir dir, HANDLE from, tty *ttyp,
transfered = true;;
}
}
+ CloseHandle (to);
/* Fix input_available_event which indicates availability in cyg pipe. */
if (dir == tty::to_nat) /* all data is transfered to nat pipe,
diff --git a/winsup/cygwin/release/3.5.1 b/winsup/cygwin/release/3.5.1
index 81945dbda..715fcf74d 100644
--- a/winsup/cygwin/release/3.5.1
+++ b/winsup/cygwin/release/3.5.1
@@ -12,3 +12,7 @@ Fixes:
error mode is now possible by using the new CYGWIN environment variable
option "winjitdebug".
Addresses: https://cygwin.com/pipermail/cygwin/2024-February/255305.html
+
+- Fix handle leak in pty master which occurs when non-cygwin process
+ is started in pty.
+ Addresses: https://github.com/msys2/msys2-runtime/issues/198
--
2.43.0
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