From 3a9eb648bb714d69623bf0344ae3e6c69b6237f1 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Sun, 15 Aug 1999 18:14:36 +0000
Subject: Update.

1999-08-15  Ulrich Drepper  <drepper@cygnus.com>

	* sysdeps/unix/sysv/linux/aio_sigqueue.c: Take extra parameter and
	initialize si_pid from it.
	* sysdeps/generic/aio_sigqueue.c (__aio_sigqueue): Take extra
	parameter.
	* rt/aio_misc.c (__aio_enqueue_request): Initialize caller_pid.
	* rt/aio_misc.h (struct waitlist): Add caller_pid element.
	(struct requestlist): Likewise.
	Adjust prototypes of __aio_notify_only and __aio_sigqueue.
	* rt/notify.c (__aio_notify_only): Take extra parameter.  Pass it
	to __aio_sigqueue.
	(__aio_notify): Pass caller PID to __aio_notify_only.
	* rt/aio_suspend.c: Initialize caller_pid.
	* rt/lio_listio.c: Likewise.
	* rt/lio_listio64.c: Likewise.

	* rt/lio_listio.c: If nothing has to be done free mutex before
	signalling.
	* rt/lio_listio64.c: Likewise.
---
 rt/lio_listio.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

(limited to 'rt/lio_listio.c')

diff --git a/rt/lio_listio.c b/rt/lio_listio.c
index 03c3bf2f6b..13d1b79a58 100644
--- a/rt/lio_listio.c
+++ b/rt/lio_listio.c
@@ -1,5 +1,5 @@
 /* Enqueue and list of read or write requests.
-   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -21,6 +21,7 @@
 #include <aio.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #include "aio_misc.h"
 
@@ -77,8 +78,17 @@ lio_listio (mode, list, nent, sig)
     {
       /* We don't have anything to do except signalling if we work
 	 asynchronously.  */
+
+      /* Release the mutex.  We do this before raising a signal since the
+	 signal handler might do a `siglongjmp' and then the mutex is
+	 locked forever.  */
+      pthread_mutex_unlock (&__aio_requests_mutex);
+
       if (mode == LIO_NOWAIT)
-	__aio_notify_only (sig);
+	__aio_notify_only (sig,
+			   sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
+
+      return result;
     }
   else if (mode == LIO_WAIT)
     {
@@ -95,6 +105,7 @@ lio_listio (mode, list, nent, sig)
 	    waitlist[cnt].next = requests[cnt]->waiting;
 	    waitlist[cnt].counterp = &total;
 	    waitlist[cnt].sigevp = NULL;
+	    waitlist[cnt].caller_pid = 0;	/* Not needed.  */
 	    requests[cnt]->waiting = &waitlist[cnt];
 	    ++total;
 	  }
@@ -130,6 +141,7 @@ lio_listio (mode, list, nent, sig)
 	}
       else
 	{
+	  pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
 	  total = 0;
 
 	  for (cnt = 0; cnt < nent; ++cnt)
@@ -140,6 +152,7 @@ lio_listio (mode, list, nent, sig)
 		waitlist->list[cnt].next = requests[cnt]->waiting;
 		waitlist->list[cnt].counterp = &waitlist->counter;
 		waitlist->list[cnt].sigevp = &waitlist->sigev;
+		waitlist->list[cnt].caller_pid = caller_pid;
 		requests[cnt]->waiting = &waitlist->list[cnt];
 		++total;
 	      }
-- 
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