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

   1 /*
   2  * Copyright (c) 2014 Stefan Sørensen <stefan.sorensen@spectralink.com>
   3  * Copyright (c) 2014-2015 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/ptp_clock.h>
  32
  33 #include "xlat/ptp_flags_options.h"
  34
  35 int
  36 ptp_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
  37 {
  38         if (!verbose(tcp))
  39                 return RVAL_DECODED;
  40
  41         switch (code) {
  42         case PTP_EXTTS_REQUEST: {
  43                 struct ptp_extts_request extts;
  44
  45                 tprints(", ");
  46                 if (umove_or_printaddr(tcp, arg, &extts))
  47                         break;
  48
  49                 tprintf("{index=%d, flags=", extts.index);
  50                 printflags(ptp_flags_options, extts.flags, "PTP_???");
  51                 tprints("}");
  52                 break;
  53         }
  54
  55         case PTP_PEROUT_REQUEST: {
  56                 struct ptp_perout_request perout;
  57
  58                 tprints(", ");
  59                 if (umove_or_printaddr(tcp, arg, &perout))
  60                         break;
  61
  62                 tprintf("{start={%" PRId64 ", %" PRIu32 "}"
  63                            ", period={%" PRId64 ", %" PRIu32 "}"
  64                            ", index=%d, flags=",
  65                         (int64_t)perout.start.sec, perout.start.nsec,
  66                         (int64_t)perout.period.sec, perout.period.nsec,
  67                         perout.index);
  68                 printflags(ptp_flags_options, perout.flags, "PTP_???");
  69                 tprints("}");
  70                 break;
  71         }
  72
  73         case PTP_ENABLE_PPS:
  74                 tprintf(", %ld", arg);
  75                 break;
  76
  77         case PTP_SYS_OFFSET: {
  78                 struct ptp_sys_offset sysoff;
  79
  80                 if (entering(tcp)) {
  81                         tprints(", ");
  82                         if (umove_or_printaddr(tcp, arg, &sysoff))
  83                                 break;
  84
  85                         tprintf("{n_samples=%u", sysoff.n_samples);
  86                         return 1;
  87                 } else {
  88                         unsigned int n_samples, i;
  89
  90                         if (syserror(tcp)) {
  91                                 tprints("}");
  92                                 break;
  93                         }
  94
  95                         tprints(", ");
  96                         if (umove(tcp, arg, &sysoff) < 0) {
  97                                 tprints("???}");
  98                                 break;
  99                         }
 100
 101                         tprints("ts=[");
 102                         n_samples = sysoff.n_samples > PTP_MAX_SAMPLES ?
 103                                 PTP_MAX_SAMPLES : sysoff.n_samples;
 104                         for (i = 0; i < 2 * n_samples + 1; ++i) {
 105                                 if (i > 0)
 106                                         tprints(", ");
 107                                 tprintf("{%" PRId64 ", %" PRIu32 "}",
 108                                         (int64_t)sysoff.ts[i].sec,
 109                                         sysoff.ts[i].nsec);
 110                         }
 111                         if (sysoff.n_samples > PTP_MAX_SAMPLES)
 112                                 tprints(", ...");
 113                         tprints("]}");
 114                         break;
 115                 }
 116         }
 117         case PTP_CLOCK_GETCAPS: {
 118                 struct ptp_clock_caps caps;
 119
 120                 if (entering(tcp))
 121                         return 0;
 122
 123                 tprints(", ");
 124                 if (umove_or_printaddr(tcp, arg, &caps))
 125                         break;
 126
 127                 tprintf("{max_adj=%d, n_alarm=%d, n_ext_ts=%d, n_per_out=%d, pps=%d}",
 128                         caps.max_adj, caps.n_alarm, caps.n_ext_ts,
 129                         caps.n_per_out, caps.pps);
 130                 break;
 131         }
 132
 133         default:
 134                 return RVAL_DECODED;
 135         }
 136
 137         return RVAL_DECODED | 1;
 138 }