138a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin/* 238a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org> 338a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * All rights reserved. 438a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * 538a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * Redistribution and use in source and binary forms, with or without 638a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * modification, are permitted provided that the following conditions 738a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * are met: 838a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * 1. Redistributions of source code must retain the above copyright 938a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * notice, this list of conditions and the following disclaimer. 1038a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * 2. Redistributions in binary form must reproduce the above copyright 1138a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * notice, this list of conditions and the following disclaimer in the 1238a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * documentation and/or other materials provided with the distribution. 1338a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * 3. The name of the author may not be used to endorse or promote products 1438a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * derived from this software without specific prior written permission. 1538a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * 1638a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 1738a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 1838a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 1938a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 2038a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 2138a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2238a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2338a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2438a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 2538a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2638a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin */ 2738a34c9349267c99ce1ddbd0b6e985147415d355Dmitry V. Levin 28fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin#include "defs.h" 29fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 30fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levinenum { 31fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin IOPRIO_WHO_PROCESS = 1, 32fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin IOPRIO_WHO_PGRP, 33fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin IOPRIO_WHO_USER 34fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin}; 35fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 360ed617bd66624cec6138102545d73b2e2346f1f6Dmitry V. Levin#include "xlat/ioprio_who.h" 37fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 38fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levinenum { 39fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin IOPRIO_CLASS_NONE, 40fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin IOPRIO_CLASS_RT, 41fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin IOPRIO_CLASS_BE, 42fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin IOPRIO_CLASS_IDLE 43fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin}; 44fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 450ed617bd66624cec6138102545d73b2e2346f1f6Dmitry V. Levin#include "xlat/ioprio_class.h" 46fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 47fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin#define IOPRIO_CLASS_SHIFT (13) 48fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin#define IOPRIO_PRIO_MASK ((1ul << IOPRIO_CLASS_SHIFT) - 1) 49fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 50fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT) 51fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK) 52fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 53fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levinstatic const char * 54fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levinsprint_ioprio(int ioprio) 55fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin{ 56fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin static char outstr[256]; 57fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin const char *str; 58fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin int class, data; 59fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 60fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin class = IOPRIO_PRIO_CLASS(ioprio); 61fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin data = IOPRIO_PRIO_DATA(ioprio); 62fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin str = xlookup(ioprio_class, class); 63fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin if (str) 64fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin sprintf(outstr, "IOPRIO_PRIO_VALUE(%s,%d)", str, data); 65fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin else 66fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin sprintf(outstr, "IOPRIO_PRIO_VALUE(%#x /* %s */,%d)", 67fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin class, "IOPRIO_CLASS_???", data); 68fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 69fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin return outstr; 70fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin} 71fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 72a0bd3749fc6fdf6364c1e269a4c02e8c153eb84bDmitry V. LevinSYS_FUNC(ioprio_get) 73fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin{ 74fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin if (entering(tcp)) { 75fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin /* int which */ 76fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin printxval(ioprio_who, tcp->u_arg[0], "IOPRIO_WHO_???"); 77fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin /* int who */ 78fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin tprintf(", %d", (int) tcp->u_arg[1]); 79fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin return 0; 80fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin } else { 81fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin if (syserror(tcp)) 82fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin return 0; 83fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 84fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin tcp->auxstr = sprint_ioprio(tcp->u_rval); 85fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin return RVAL_STR; 86fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin } 87fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin} 88fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin 89a0bd3749fc6fdf6364c1e269a4c02e8c153eb84bDmitry V. LevinSYS_FUNC(ioprio_set) 90fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin{ 91a58ad74f79015398bee378c08b0f1e25c26edc79Dmitry V. Levin /* int which */ 92a58ad74f79015398bee378c08b0f1e25c26edc79Dmitry V. Levin printxval(ioprio_who, tcp->u_arg[0], "IOPRIO_WHO_???"); 93a58ad74f79015398bee378c08b0f1e25c26edc79Dmitry V. Levin /* int who */ 94a58ad74f79015398bee378c08b0f1e25c26edc79Dmitry V. Levin tprintf(", %d, ", (int) tcp->u_arg[1]); 95a58ad74f79015398bee378c08b0f1e25c26edc79Dmitry V. Levin /* int ioprio */ 96a58ad74f79015398bee378c08b0f1e25c26edc79Dmitry V. Levin tprints(sprint_ioprio(tcp->u_arg[2])); 97a58ad74f79015398bee378c08b0f1e25c26edc79Dmitry V. Levin 98a58ad74f79015398bee378c08b0f1e25c26edc79Dmitry V. Levin return RVAL_DECODED; 99fc4727de60fa79b0f638a2c78a3edf865dc75943Dmitry V. Levin} 100