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) 2014-2018 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 "print_fields.h"
  38 # include "xlat/ptp_flags_options.h"
  39
  40 int
  41 ptp_ioctl(struct tcb *const tcp, const unsigned int code,
  42           const kernel_ulong_t arg)
  43 {
  44         if (!verbose(tcp))
  45                 return RVAL_DECODED;
  46
  47         switch (code) {
  48         case PTP_EXTTS_REQUEST: {
  49                 struct ptp_extts_request extts;
  50
  51                 tprints(", ");
  52                 if (umove_or_printaddr(tcp, arg, &extts))
  53                         break;
  54
  55                 PRINT_FIELD_D("{", extts, index);
  56                 PRINT_FIELD_FLAGS(", ", extts, flags, ptp_flags_options, "PTP_???");
  57                 tprints("}");
  58                 break;
  59         }
  60
  61         case PTP_PEROUT_REQUEST: {
  62                 struct ptp_perout_request perout;
  63
  64                 tprints(", ");
  65                 if (umove_or_printaddr(tcp, arg, &perout))
  66                         break;
  67
  68                 PRINT_FIELD_D("{start={", perout.start, sec);
  69                 PRINT_FIELD_U(", ", perout.start, nsec);
  70                 PRINT_FIELD_D("}, period={", perout.period, sec);
  71                 PRINT_FIELD_U(", ", perout.period, nsec);
  72                 PRINT_FIELD_D("}, ", perout, index);
  73                 PRINT_FIELD_FLAGS(", ", perout, flags, ptp_flags_options, "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                         PRINT_FIELD_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                                 PRINT_FIELD_D("{", sysoff.ts[i], sec);
 113                                 PRINT_FIELD_U(", ", sysoff.ts[i], nsec);
 114                                 tprints("}");
 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                 PRINT_FIELD_D("{", caps, max_adj);
 133                 PRINT_FIELD_D(", ", caps, n_alarm);
 134                 PRINT_FIELD_D(", ", caps, n_ext_ts);
 135                 PRINT_FIELD_D(", ", caps, n_per_out);
 136                 PRINT_FIELD_D(", ", caps, pps);
 137                 tprints("}");
 138                 break;
 139         }
 140
 141         default:
 142                 return RVAL_DECODED;
 143         }
 144
 145         return RVAL_IOCTL_DECODED;
 146 }
 147
 148 #endif /* HAVE_STRUCT_PTP_SYS_OFFSET */