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

   1 /*
   2  * Copyright (c) 2004 Ulrich Drepper <drepper@redhat.com>
   3  * Copyright (c) 2004 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 #include <linux/ioctl.h>
  31 #include <linux/rtc.h>
  32
  33 static void
  34 print_rtc_time(struct tcb *tcp, const struct rtc_time *rt)
  35 {
  36         tprintf("{tm_sec=%d, tm_min=%d, tm_hour=%d, "
  37                 "tm_mday=%d, tm_mon=%d, tm_year=%d, ",
  38                 rt->tm_sec, rt->tm_min, rt->tm_hour,
  39                 rt->tm_mday, rt->tm_mon, rt->tm_year);
  40         if (!abbrev(tcp))
  41                 tprintf("tm_wday=%d, tm_yday=%d, tm_isdst=%d}",
  42                         rt->tm_wday, rt->tm_yday, rt->tm_isdst);
  43         else
  44                 tprints("...}");
  45 }
  46
  47 static void
  48 decode_rtc_time(struct tcb *tcp, const long addr)
  49 {
  50         struct rtc_time rt;
  51
  52         if (!umove_or_printaddr(tcp, addr, &rt))
  53                 print_rtc_time(tcp, &rt);
  54 }
  55
  56 static void
  57 decode_rtc_wkalrm(struct tcb *tcp, const long addr)
  58 {
  59         struct rtc_wkalrm wk;
  60
  61         if (!umove_or_printaddr(tcp, addr, &wk)) {
  62                 tprintf("{enabled=%d, pending=%d, ", wk.enabled, wk.pending);
  63                 print_rtc_time(tcp, &wk.time);
  64                 tprints("}");
  65         }
  66 }
  67
  68 static void
  69 decode_rtc_pll_info(struct tcb *tcp, const long addr)
  70 {
  71         struct rtc_pll_info pll;
  72
  73         if (!umove_or_printaddr(tcp, addr, &pll))
  74                 tprintf("{pll_ctrl=%d, pll_value=%d, pll_max=%d, pll_min=%d"
  75                         ", pll_posmult=%d, pll_negmult=%d, pll_clock=%ld}",
  76                         pll.pll_ctrl, pll.pll_value, pll.pll_max, pll.pll_min,
  77                         pll.pll_posmult, pll.pll_negmult, pll.pll_clock);
  78 }
  79
  80 int
  81 rtc_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
  82 {
  83         switch (code) {
  84         case RTC_ALM_READ:
  85         case RTC_RD_TIME:
  86                 if (entering(tcp))
  87                         return 0;
  88                 /* fall through */
  89         case RTC_ALM_SET:
  90         case RTC_SET_TIME:
  91                 tprints(", ");
  92                 decode_rtc_time(tcp, arg);
  93                 break;
  94         case RTC_IRQP_SET:
  95         case RTC_EPOCH_SET:
  96                 tprintf(", %lu", arg);
  97                 break;
  98         case RTC_IRQP_READ:
  99         case RTC_EPOCH_READ:
 100                 if (entering(tcp))
 101                         return 0;
 102                 tprints(", ");
 103                 printnum_ulong(tcp, arg);
 104                 break;
 105         case RTC_WKALM_RD:
 106                 if (entering(tcp))
 107                         return 0;
 108                 /* fall through */
 109         case RTC_WKALM_SET:
 110                 tprints(", ");
 111                 decode_rtc_wkalrm(tcp, arg);
 112                 break;
 113         case RTC_PLL_GET:
 114                 if (entering(tcp))
 115                         return 0;
 116                 /* fall through */
 117         case RTC_PLL_SET:
 118                 tprints(", ");
 119                 decode_rtc_pll_info(tcp, arg);
 120                 break;
 121 #ifdef RTC_VL_READ
 122         case RTC_VL_READ:
 123                 if (entering(tcp))
 124                         return 0;
 125                 tprints(", ");
 126                 printnum_int(tcp, arg, "%d");
 127                 break;
 128 #endif
 129         default:
 130                 return RVAL_DECODED;
 131         }
 132
 133         return RVAL_DECODED | 1;
 134 }