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
  32 #ifdef HAVE_STRUCT_PTP_SYS_OFFSET
  33
  34 # include <linux/ioctl.h>
  35 # include <linux/ptp_clock.h>
  36
  37 # include "xlat/ptp_flags_options.h"
  38
  39 int
  40 ptp_ioctl(struct tcb *const tcp, const unsigned int code,
  41           const kernel_ulong_t arg)
  42 {
  43         if (!verbose(tcp))
  44                 return RVAL_DECODED;
  45
  46         switch (code) {
  47         case PTP_EXTTS_REQUEST: {
  48                 struct ptp_extts_request extts;
  49
  50                 tprints(", ");
  51                 if (umove_or_printaddr(tcp, arg, &extts))
  52                         break;
  53
  54                 tprintf("{index=%d, flags=", extts.index);
  55                 printflags(ptp_flags_options, extts.flags, "PTP_???");
  56                 tprints("}");
  57                 break;
  58         }
  59
  60         case PTP_PEROUT_REQUEST: {
  61                 struct ptp_perout_request perout;
  62
  63                 tprints(", ");
  64                 if (umove_or_printaddr(tcp, arg, &perout))
  65                         break;
  66
  67                 tprintf("{start={%" PRId64 ", %" PRIu32 "}"
  68                            ", period={%" PRId64 ", %" PRIu32 "}"
  69                            ", index=%d, flags=",
  70                         (int64_t)perout.start.sec, perout.start.nsec,
  71                         (int64_t)perout.period.sec, perout.period.nsec,
  72                         perout.index);
  73                 printflags(ptp_flags_options, perout.flags, "PTP_???");
  74                 tprints("}");
  75                 break;
  76         }
  77
  78         case PTP_ENABLE_PPS:
  79                 tprintf(", %" PRI_kld, arg);
  80                 break;
  81
  82         case PTP_SYS_OFFSET: {
  83                 struct ptp_sys_offset sysoff;
  84
  85                 if (entering(tcp)) {
  86                         tprints(", ");
  87                         if (umove_or_printaddr(tcp, arg, &sysoff))
  88                                 break;
  89
  90                         tprintf("{n_samples=%u", sysoff.n_samples);
  91                         return 0;
  92                 } else {
  93                         unsigned int n_samples, i;
  94
  95                         if (syserror(tcp)) {
  96                                 tprints("}");
  97                                 break;
  98                         }
  99
 100                         tprints(", ");
 101                         if (umove(tcp, arg, &sysoff) < 0) {
 102                                 tprints("???}");
 103                                 break;
 104                         }
 105
 106                         tprints("ts=[");
 107                         n_samples = sysoff.n_samples > PTP_MAX_SAMPLES ?
 108                                 PTP_MAX_SAMPLES : sysoff.n_samples;
 109                         for (i = 0; i < 2 * n_samples + 1; ++i) {
 110                                 if (i > 0)
 111                                         tprints(", ");
 112                                 tprintf("{%" PRId64 ", %" PRIu32 "}",
 113                                         (int64_t)sysoff.ts[i].sec,
 114                                         sysoff.ts[i].nsec);
 115                         }
 116                         if (sysoff.n_samples > PTP_MAX_SAMPLES)
 117                                 tprints(", ...");
 118                         tprints("]}");
 119                         break;
 120                 }
 121         }
 122         case PTP_CLOCK_GETCAPS: {
 123                 struct ptp_clock_caps caps;
 124
 125                 if (entering(tcp))
 126                         return 0;
 127
 128                 tprints(", ");
 129                 if (umove_or_printaddr(tcp, arg, &caps))
 130                         break;
 131
 132                 tprintf("{max_adj=%d, n_alarm=%d, n_ext_ts=%d, n_per_out=%d, pps=%d}",
 133                         caps.max_adj, caps.n_alarm, caps.n_ext_ts,
 134                         caps.n_per_out, caps.pps);
 135                 break;
 136         }
 137
 138         default:
 139                 return RVAL_DECODED;
 140         }
 141
 142         return RVAL_IOCTL_DECODED;
 143 }
 144
 145 #endif /* HAVE_STRUCT_PTP_SYS_OFFSET */