strace/mq.c
Dmitry V. Levin 3858b93ad9 Add helper functions to clear/restore syserror
* defs.h (temporarily_clear_syserror, restore_cleared_syserror):
New prototypes.
* syscall.c (saved_u_error): New variable.
(temporarily_clear_syserror, restore_cleared_syserror): New functions.
* aio.c (sys_io_getevents): Use temporarily_clear_syserror
and restore_cleared_syserror.
* mq.c (sys_mq_timedreceive): Likewise.
* signal.c (sys_rt_sigtimedwait): Likewise.
2015-09-19 04:04:49 +03:00

91 lines
2.8 KiB
C

/*
* Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
* Copyright (c) 2005-2015 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include <fcntl.h>
SYS_FUNC(mq_open)
{
printpath(tcp, tcp->u_arg[0]);
tprints(", ");
/* flags */
tprint_open_modes(tcp->u_arg[1]);
if (tcp->u_arg[1] & O_CREAT) {
/* mode */
tprintf(", %#lo, ", tcp->u_arg[2]);
printmqattr(tcp, tcp->u_arg[3]);
}
return RVAL_DECODED;
}
SYS_FUNC(mq_timedsend)
{
tprintf("%ld, ", tcp->u_arg[0]);
printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
tprintf(", %lu, %ld, ", tcp->u_arg[2], tcp->u_arg[3]);
printtv(tcp, tcp->u_arg[4]);
return RVAL_DECODED;
}
SYS_FUNC(mq_timedreceive)
{
if (entering(tcp))
tprintf("%ld, ", tcp->u_arg[0]);
else {
printstr(tcp, tcp->u_arg[1], tcp->u_arg[2]);
tprintf(", %lu, %ld, ", tcp->u_arg[2], tcp->u_arg[3]);
/*
* Since the timeout parameter is read by the kernel
* on entering syscall, it has to be decoded the same way
* whether the syscall has failed or not.
*/
temporarily_clear_syserror(tcp);
printtv(tcp, tcp->u_arg[4]);
restore_cleared_syserror(tcp);
}
return 0;
}
SYS_FUNC(mq_notify)
{
tprintf("%ld, ", tcp->u_arg[0]);
print_sigevent(tcp, tcp->u_arg[1]);
return RVAL_DECODED;
}
SYS_FUNC(mq_getsetattr)
{
if (entering(tcp)) {
tprintf("%ld, ", tcp->u_arg[0]);
printmqattr(tcp, tcp->u_arg[1]);
tprints(", ");
} else
printmqattr(tcp, tcp->u_arg[2]);
return 0;
}