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  * Copyright (c) 2014-2017 The strace developers.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include "defs.h"
  31 #include <linux/ioctl.h>
  32 #include <linux/ptp_clock.h>
  33
  34 #include "xlat/ptp_flags_options.h"
  35
  36 int
  37 ptp_ioctl(struct tcb *const tcp, const unsigned int code,
  38           const kernel_ulong_t arg)
  39 {
  40         if (!verbose(tcp))
  41                 return RVAL_DECODED;
  42
  43         switch (code) {
  44         case PTP_EXTTS_REQUEST: {
  45                 struct ptp_extts_request extts;
  46
  47                 tprints(", ");
  48                 if (umove_or_printaddr(tcp, arg, &extts))
  49                         break;
  50
  51                 tprintf("{index=%d, flags=", extts.index);
  52                 printflags(ptp_flags_options, extts.flags, "PTP_???");
  53                 tprints("}");
  54                 break;
  55         }
  56
  57         case PTP_PEROUT_REQUEST: {
  58                 struct ptp_perout_request perout;
  59
  60                 tprints(", ");
  61                 if (umove_or_printaddr(tcp, arg, &perout))
  62                         break;
  63
  64                 tprintf("{start={%" PRId64 ", %" PRIu32 "}"
  65                            ", period={%" PRId64 ", %" PRIu32 "}"
  66                            ", index=%d, flags=",
  67                         (int64_t)perout.start.sec, perout.start.nsec,
  68                         (int64_t)perout.period.sec, perout.period.nsec,
  69                         perout.index);
  70                 printflags(ptp_flags_options, perout.flags, "PTP_???");
  71                 tprints("}");
  72                 break;
  73         }
  74
  75         case PTP_ENABLE_PPS:
  76                 tprintf(", %" PRI_kld, arg);
  77                 break;
  78
  79         case PTP_SYS_OFFSET: {
  80                 struct ptp_sys_offset sysoff;
  81
  82                 if (entering(tcp)) {
  83                         tprints(", ");
  84                         if (umove_or_printaddr(tcp, arg, &sysoff))
  85                                 break;
  86
  87                         tprintf("{n_samples=%u", sysoff.n_samples);
  88                         return 1;
  89                 } else {
  90                         unsigned int n_samples, i;
  91
  92                         if (syserror(tcp)) {
  93                                 tprints("}");
  94                                 break;
  95                         }
  96
  97                         tprints(", ");
  98                         if (umove(tcp, arg, &sysoff) < 0) {
  99                                 tprints("???}");
 100                                 break;
 101                         }
 102
 103                         tprints("ts=[");
 104                         n_samples = sysoff.n_samples > PTP_MAX_SAMPLES ?
 105                                 PTP_MAX_SAMPLES : sysoff.n_samples;
 106                         for (i = 0; i < 2 * n_samples + 1; ++i) {
 107                                 if (i > 0)
 108                                         tprints(", ");
 109                                 tprintf("{%" PRId64 ", %" PRIu32 "}",
 110                                         (int64_t)sysoff.ts[i].sec,
 111                                         sysoff.ts[i].nsec);
 112                         }
 113                         if (sysoff.n_samples > PTP_MAX_SAMPLES)
 114                                 tprints(", ...");
 115                         tprints("]}");
 116                         break;
 117                 }
 118         }
 119         case PTP_CLOCK_GETCAPS: {
 120                 struct ptp_clock_caps caps;
 121
 122                 if (entering(tcp))
 123                         return 0;
 124
 125                 tprints(", ");
 126                 if (umove_or_printaddr(tcp, arg, &caps))
 127                         break;
 128
 129                 tprintf("{max_adj=%d, n_alarm=%d, n_ext_ts=%d, n_per_out=%d, pps=%d}",
 130                         caps.max_adj, caps.n_alarm, caps.n_ext_ts,
 131                         caps.n_per_out, caps.pps);
 132                 break;
 133         }
 134
 135         default:
 136                 return RVAL_DECODED;
 137         }
 138
 139         return RVAL_DECODED | 1;
 140 }