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  * SPDX-License-Identifier: LGPL-2.1-or-later
   8  */
   9
  10 #include "defs.h"
  11
  12 #ifdef HAVE_STRUCT_PTP_SYS_OFFSET
  13
  14 # include <linux/ioctl.h>
  15 # include <linux/ptp_clock.h>
  16
  17 # include "print_fields.h"
  18 # include "xlat/ptp_flags_options.h"
  19
  20 int
  21 ptp_ioctl(struct tcb *const tcp, const unsigned int code,
  22           const kernel_ulong_t arg)
  23 {
  24         if (!verbose(tcp))
  25                 return RVAL_DECODED;
  26
  27         switch (code) {
  28         case PTP_EXTTS_REQUEST: {
  29                 struct ptp_extts_request extts;
  30
  31                 tprints(", ");
  32                 if (umove_or_printaddr(tcp, arg, &extts))
  33                         break;
  34
  35                 PRINT_FIELD_D("{", extts, index);
  36                 PRINT_FIELD_FLAGS(", ", extts, flags, ptp_flags_options, "PTP_???");
  37                 tprints("}");
  38                 break;
  39         }
  40
  41         case PTP_PEROUT_REQUEST: {
  42                 struct ptp_perout_request perout;
  43
  44                 tprints(", ");
  45                 if (umove_or_printaddr(tcp, arg, &perout))
  46                         break;
  47
  48                 PRINT_FIELD_D("{start={", perout.start, sec);
  49                 PRINT_FIELD_U(", ", perout.start, nsec);
  50                 PRINT_FIELD_D("}, period={", perout.period, sec);
  51                 PRINT_FIELD_U(", ", perout.period, nsec);
  52                 PRINT_FIELD_D("}, ", perout, index);
  53                 PRINT_FIELD_FLAGS(", ", perout, flags, ptp_flags_options, "PTP_???");
  54                 tprints("}");
  55                 break;
  56         }
  57
  58         case PTP_ENABLE_PPS:
  59                 tprintf(", %" PRI_kld, arg);
  60                 break;
  61
  62         case PTP_SYS_OFFSET: {
  63                 struct ptp_sys_offset sysoff;
  64
  65                 if (entering(tcp)) {
  66                         tprints(", ");
  67                         if (umove_or_printaddr(tcp, arg, &sysoff))
  68                                 break;
  69
  70                         PRINT_FIELD_U("{", sysoff, n_samples);
  71                         return 0;
  72                 } else {
  73                         unsigned int n_samples, i;
  74
  75                         if (syserror(tcp)) {
  76                                 tprints("}");
  77                                 break;
  78                         }
  79
  80                         tprints(", ");
  81                         if (umove(tcp, arg, &sysoff) < 0) {
  82                                 tprints("???}");
  83                                 break;
  84                         }
  85
  86                         tprints("ts=[");
  87                         n_samples = sysoff.n_samples > PTP_MAX_SAMPLES ?
  88                                 PTP_MAX_SAMPLES : sysoff.n_samples;
  89                         for (i = 0; i < 2 * n_samples + 1; ++i) {
  90                                 if (i > 0)
  91                                         tprints(", ");
  92                                 PRINT_FIELD_D("{", sysoff.ts[i], sec);
  93                                 PRINT_FIELD_U(", ", sysoff.ts[i], nsec);
  94                                 tprints("}");
  95                         }
  96                         if (sysoff.n_samples > PTP_MAX_SAMPLES)
  97                                 tprints(", ...");
  98                         tprints("]}");
  99                         break;
 100                 }
 101         }
 102         case PTP_CLOCK_GETCAPS: {
 103                 struct ptp_clock_caps caps;
 104
 105                 if (entering(tcp))
 106                         return 0;
 107
 108                 tprints(", ");
 109                 if (umove_or_printaddr(tcp, arg, &caps))
 110                         break;
 111
 112                 PRINT_FIELD_D("{", caps, max_adj);
 113                 PRINT_FIELD_D(", ", caps, n_alarm);
 114                 PRINT_FIELD_D(", ", caps, n_ext_ts);
 115                 PRINT_FIELD_D(", ", caps, n_per_out);
 116                 PRINT_FIELD_D(", ", caps, pps);
 117                 tprints("}");
 118                 break;
 119         }
 120
 121         default:
 122                 return RVAL_DECODED;
 123         }
 124
 125         return RVAL_IOCTL_DECODED;
 126 }
 127
 128 #endif /* HAVE_STRUCT_PTP_SYS_OFFSET */