granicus.if.org Git - strace/blob - rtc.c

   1 /*
   2  * Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
   3  * Copyright (c) 2004-2016 Dmitry V. Levin <ldv@altlinux.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "defs.h"
  30
  31 #include DEF_MPERS_TYPE(struct_rtc_pll_info)
  32
  33 #include <linux/ioctl.h>
  34 #include <linux/rtc.h>
  35
  36 typedef struct rtc_pll_info struct_rtc_pll_info;
  37
  38 #include MPERS_DEFS
  39
  40 static void
  41 print_rtc_time(struct tcb *tcp, const struct rtc_time *rt)
  42 {
  43         tprintf("{tm_sec=%d, tm_min=%d, tm_hour=%d, "
  44                 "tm_mday=%d, tm_mon=%d, tm_year=%d, ",
  45                 rt->tm_sec, rt->tm_min, rt->tm_hour,
  46                 rt->tm_mday, rt->tm_mon, rt->tm_year);
  47         if (!abbrev(tcp))
  48                 tprintf("tm_wday=%d, tm_yday=%d, tm_isdst=%d}",
  49                         rt->tm_wday, rt->tm_yday, rt->tm_isdst);
  50         else
  51                 tprints("...}");
  52 }
  53
  54 static void
  55 decode_rtc_time(struct tcb *tcp, const long addr)
  56 {
  57         struct rtc_time rt;
  58
  59         if (!umove_or_printaddr(tcp, addr, &rt))
  60                 print_rtc_time(tcp, &rt);
  61 }
  62
  63 static void
  64 decode_rtc_wkalrm(struct tcb *tcp, const long addr)
  65 {
  66         struct rtc_wkalrm wk;
  67
  68         if (!umove_or_printaddr(tcp, addr, &wk)) {
  69                 tprintf("{enabled=%d, pending=%d, time=", wk.enabled, wk.pending);
  70                 print_rtc_time(tcp, &wk.time);
  71                 tprints("}");
  72         }
  73 }
  74
  75 static void
  76 decode_rtc_pll_info(struct tcb *tcp, const long addr)
  77 {
  78         struct_rtc_pll_info pll;
  79
  80         if (!umove_or_printaddr(tcp, addr, &pll))
  81                 tprintf("{pll_ctrl=%d, pll_value=%d, pll_max=%d, pll_min=%d"
  82                         ", pll_posmult=%d, pll_negmult=%d, pll_clock=%ld}",
  83                         pll.pll_ctrl, pll.pll_value, pll.pll_max, pll.pll_min,
  84                         pll.pll_posmult, pll.pll_negmult, (long) pll.pll_clock);
  85 }
  86
  87 MPERS_PRINTER_DECL(int, rtc_ioctl, struct tcb *tcp,
  88                    const unsigned int code, const long arg)
  89 {
  90         switch (code) {
  91         case RTC_ALM_READ:
  92         case RTC_RD_TIME:
  93                 if (entering(tcp))
  94                         return 0;
  95                 /* fall through */
  96         case RTC_ALM_SET:
  97         case RTC_SET_TIME:
  98                 tprints(", ");
  99                 decode_rtc_time(tcp, arg);
 100                 break;
 101         case RTC_IRQP_SET:
 102         case RTC_EPOCH_SET:
 103                 tprintf(", %lu", arg);
 104                 break;
 105         case RTC_IRQP_READ:
 106         case RTC_EPOCH_READ:
 107                 if (entering(tcp))
 108                         return 0;
 109                 tprints(", ");
 110                 printnum_ulong(tcp, arg);
 111                 break;
 112         case RTC_WKALM_RD:
 113                 if (entering(tcp))
 114                         return 0;
 115                 /* fall through */
 116         case RTC_WKALM_SET:
 117                 tprints(", ");
 118                 decode_rtc_wkalrm(tcp, arg);
 119                 break;
 120         case RTC_PLL_GET:
 121                 if (entering(tcp))
 122                         return 0;
 123                 /* fall through */
 124         case RTC_PLL_SET:
 125                 tprints(", ");
 126                 decode_rtc_pll_info(tcp, arg);
 127                 break;
 128 #ifdef RTC_VL_READ
 129         case RTC_VL_READ:
 130                 if (entering(tcp))
 131                         return 0;
 132                 tprints(", ");
 133                 printnum_int(tcp, arg, "%d");
 134                 break;
 135 #endif
 136         case RTC_AIE_ON:
 137         case RTC_AIE_OFF:
 138         case RTC_UIE_ON:
 139         case RTC_UIE_OFF:
 140         case RTC_PIE_ON:
 141         case RTC_PIE_OFF:
 142         case RTC_WIE_ON:
 143         case RTC_WIE_OFF:
 144 #ifdef RTC_VL_CLR
 145         case RTC_VL_CLR:
 146 #endif
 147                 /* no args */
 148                 break;
 149         default:
 150                 return RVAL_DECODED;
 151         }
 152
 153         return RVAL_DECODED | 1;
 154 }