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 *const tcp, const unsigned int code,
  37           const kernel_ureg_t arg)
  38 {
  39         if (!verbose(tcp))
  40                 return RVAL_DECODED;
  41
  42         switch (code) {
  43         case PTP_EXTTS_REQUEST: {
  44                 struct ptp_extts_request extts;
  45
  46                 tprints(", ");
  47                 if (umove_or_printaddr(tcp, arg, &extts))
  48                         break;
  49
  50                 tprintf("{index=%d, flags=", extts.index);
  51                 printflags(ptp_flags_options, extts.flags, "PTP_???");
  52                 tprints("}");
  53                 break;
  54         }
  55
  56         case PTP_PEROUT_REQUEST: {
  57                 struct ptp_perout_request perout;
  58
  59                 tprints(", ");
  60                 if (umove_or_printaddr(tcp, arg, &perout))
  61                         break;
  62
  63                 tprintf("{start={%" PRId64 ", %" PRIu32 "}"
  64                            ", period={%" PRId64 ", %" PRIu32 "}"
  65                            ", index=%d, flags=",
  66                         (int64_t)perout.start.sec, perout.start.nsec,
  67                         (int64_t)perout.period.sec, perout.period.nsec,
  68                         perout.index);
  69                 printflags(ptp_flags_options, perout.flags, "PTP_???");
  70                 tprints("}");
  71                 break;
  72         }
  73
  74         case PTP_ENABLE_PPS:
  75                 tprintf(", %ld", arg);
  76                 break;
  77
  78         case PTP_SYS_OFFSET: {
  79                 struct ptp_sys_offset sysoff;
  80
  81                 if (entering(tcp)) {
  82                         tprints(", ");
  83                         if (umove_or_printaddr(tcp, arg, &sysoff))
  84                                 break;
  85
  86                         tprintf("{n_samples=%u", sysoff.n_samples);
  87                         return 1;
  88                 } else {
  89                         unsigned int n_samples, i;
  90
  91                         if (syserror(tcp)) {
  92                                 tprints("}");
  93                                 break;
  94                         }
  95
  96                         tprints(", ");
  97                         if (umove(tcp, arg, &sysoff) < 0) {
  98                                 tprints("???}");
  99                                 break;
 100                         }
 101
 102                         tprints("ts=[");
 103                         n_samples = sysoff.n_samples > PTP_MAX_SAMPLES ?
 104                                 PTP_MAX_SAMPLES : sysoff.n_samples;
 105                         for (i = 0; i < 2 * n_samples + 1; ++i) {
 106                                 if (i > 0)
 107                                         tprints(", ");
 108                                 tprintf("{%" PRId64 ", %" PRIu32 "}",
 109                                         (int64_t)sysoff.ts[i].sec,
 110                                         sysoff.ts[i].nsec);
 111                         }
 112                         if (sysoff.n_samples > PTP_MAX_SAMPLES)
 113                                 tprints(", ...");
 114                         tprints("]}");
 115                         break;
 116                 }
 117         }
 118         case PTP_CLOCK_GETCAPS: {
 119                 struct ptp_clock_caps caps;
 120
 121                 if (entering(tcp))
 122                         return 0;
 123
 124                 tprints(", ");
 125                 if (umove_or_printaddr(tcp, arg, &caps))
 126                         break;
 127
 128                 tprintf("{max_adj=%d, n_alarm=%d, n_ext_ts=%d, n_per_out=%d, pps=%d}",
 129                         caps.max_adj, caps.n_alarm, caps.n_ext_ts,
 130                         caps.n_per_out, caps.pps);
 131                 break;
 132         }
 133
 134         default:
 135                 return RVAL_DECODED;
 136         }
 137
 138         return RVAL_DECODED | 1;
 139 }