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From: Corinna Vinschen <corinna@sourceware.org> To: cygwin-cvs@sourceware.org Subject: [newlib-cygwin] Cygwin: pipe: Fix handling of EPIPE and SIGPIPE in raw_write(). Date: Tue, 14 Sep 2021 15:08:20 +0000 (GMT) [thread overview] Message-ID: <20210914150820.253443857404@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=a217fa98fda80a7b706e93b6a55a0a8b26f2d586 commit a217fa98fda80a7b706e93b6a55a0a8b26f2d586 Author: Takashi Yano <takashi.yano@nifty.ne.jp> Date: Tue Sep 14 20:59:08 2021 +0900 Cygwin: pipe: Fix handling of EPIPE and SIGPIPE in raw_write(). Diff: --- winsup/cygwin/fhandler_pipe.cc | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/winsup/cygwin/fhandler_pipe.cc b/winsup/cygwin/fhandler_pipe.cc index 7e5ab328c..c2f4353f6 100644 --- a/winsup/cygwin/fhandler_pipe.cc +++ b/winsup/cygwin/fhandler_pipe.cc @@ -407,6 +407,13 @@ fhandler_pipe_fifo::raw_write (const void *ptr, size_t len) if (!len) return 0; + if (reader_closed ()) + { + set_errno (EPIPE); + raise (SIGPIPE); + return -1; + } + if (len <= pipe_buf_size) chunk = len; else if (is_nonblocking ()) @@ -475,7 +482,7 @@ fhandler_pipe_fifo::raw_write (const void *ptr, size_t len) CancelIo (get_handle ()); set_errno (EPIPE); raise (SIGPIPE); - break; + goto out; } else cygwait (select_sem, 10); @@ -527,6 +534,7 @@ fhandler_pipe_fifo::raw_write (const void *ptr, size_t len) if (nbytes_now == 0) break; } +out: if (evt) CloseHandle (evt); if (status == STATUS_THREAD_SIGNALED && nbytes == 0)
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