strace/ptp.c

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/*
* Copyright (c) 2014 Stefan Sørensen <stefan.sorensen@spectralink.com>
* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2014-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "defs.h"
#ifdef HAVE_STRUCT_PTP_SYS_OFFSET
# include <linux/ioctl.h>
# include <linux/ptp_clock.h>
# include "print_fields.h"
# include "xlat/ptp_flags_options.h"
int
ptp_ioctl(struct tcb *const tcp, const unsigned int code,
const kernel_ulong_t arg)
{
if (!verbose(tcp))
return RVAL_DECODED;
switch (code) {
case PTP_EXTTS_REQUEST: {
struct ptp_extts_request extts;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &extts))
break;
PRINT_FIELD_D("{", extts, index);
PRINT_FIELD_FLAGS(", ", extts, flags, ptp_flags_options, "PTP_???");
tprints("}");
break;
}
case PTP_PEROUT_REQUEST: {
struct ptp_perout_request perout;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &perout))
break;
PRINT_FIELD_D("{start={", perout.start, sec);
PRINT_FIELD_U(", ", perout.start, nsec);
PRINT_FIELD_D("}, period={", perout.period, sec);
PRINT_FIELD_U(", ", perout.period, nsec);
PRINT_FIELD_D("}, ", perout, index);
PRINT_FIELD_FLAGS(", ", perout, flags, ptp_flags_options, "PTP_???");
tprints("}");
break;
}
case PTP_ENABLE_PPS:
tprintf(", %" PRI_kld, arg);
break;
case PTP_SYS_OFFSET: {
struct ptp_sys_offset sysoff;
if (entering(tcp)) {
tprints(", ");
if (umove_or_printaddr(tcp, arg, &sysoff))
break;
PRINT_FIELD_U("{", sysoff, n_samples);
return 0;
} else {
unsigned int n_samples, i;
if (syserror(tcp)) {
tprints("}");
break;
}
tprints(", ");
if (umove(tcp, arg, &sysoff) < 0) {
tprints("???}");
break;
}
tprints("ts=[");
n_samples = sysoff.n_samples > PTP_MAX_SAMPLES ?
PTP_MAX_SAMPLES : sysoff.n_samples;
for (i = 0; i < 2 * n_samples + 1; ++i) {
if (i > 0)
tprints(", ");
PRINT_FIELD_D("{", sysoff.ts[i], sec);
PRINT_FIELD_U(", ", sysoff.ts[i], nsec);
tprints("}");
}
if (sysoff.n_samples > PTP_MAX_SAMPLES)
tprints(", ...");
tprints("]}");
break;
}
}
case PTP_CLOCK_GETCAPS: {
struct ptp_clock_caps caps;
if (entering(tcp))
return 0;
tprints(", ");
if (umove_or_printaddr(tcp, arg, &caps))
break;
PRINT_FIELD_D("{", caps, max_adj);
PRINT_FIELD_D(", ", caps, n_alarm);
PRINT_FIELD_D(", ", caps, n_ext_ts);
PRINT_FIELD_D(", ", caps, n_per_out);
PRINT_FIELD_D(", ", caps, pps);
tprints("}");
break;
}
default:
return RVAL_DECODED;
}
return RVAL_IOCTL_DECODED;
}
#endif /* HAVE_STRUCT_PTP_SYS_OFFSET */