Dmitry V. Levin
b93d52fe3d
strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
/*
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* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2014-2018 The strace developers.
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* All rights reserved.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#include "defs.h"
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#include "xstring.h"
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#include "xlat/ioprio_who.h"
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#include "xlat/ioprio_class.h"
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#define IOPRIO_CLASS_SHIFT (13)
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#define IOPRIO_PRIO_MASK ((1ul << IOPRIO_CLASS_SHIFT) - 1)
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#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT)
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#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK)
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static const char *
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sprint_ioprio(unsigned int ioprio)
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{
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static char outstr[256];
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char class_buf[64];
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unsigned int class, data;
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class = IOPRIO_PRIO_CLASS(ioprio);
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data = IOPRIO_PRIO_DATA(ioprio);
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sprintxval(class_buf, sizeof(class_buf), ioprio_class, class,
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"IOPRIO_CLASS_???");
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xsprintf(outstr, "IOPRIO_PRIO_VALUE(%s, %d)", class_buf, data);
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return outstr;
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}
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SYS_FUNC(ioprio_get)
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{
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if (entering(tcp)) {
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/* int which */
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printxval(ioprio_who, tcp->u_arg[0], "IOPRIO_WHO_???");
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/* int who */
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tprintf(", %d", (int) tcp->u_arg[1]);
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return 0;
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} else {
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if (syserror(tcp))
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return 0;
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tcp->auxstr = sprint_ioprio(tcp->u_rval);
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return RVAL_STR;
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}
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}
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SYS_FUNC(ioprio_set)
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{
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/* int which */
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printxval(ioprio_who, tcp->u_arg[0], "IOPRIO_WHO_???");
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/* int who */
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tprintf(", %d, ", (int) tcp->u_arg[1]);
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/* int ioprio */
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tprints(sprint_ioprio(tcp->u_arg[2]));
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return RVAL_DECODED;
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}
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