ptp.c

#include "defs.h"
#include <linux/ioctl.h>
#include <linux/ptp_clock.h>

#include "xlat/ptp_flags_options.h"

int
ptp_ioctl(struct tcb *tcp, const unsigned int code, const long 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;

		tprintf("{index=%d, flags=", extts.index);
		printflags(ptp_flags_options, extts.flags, "PTP_???");
		tprints("}");
		break;
	}

	case PTP_PEROUT_REQUEST: {
		struct ptp_perout_request perout;

		tprints(", ");
		if (umove_or_printaddr(tcp, arg, &perout))
			break;

		tprintf("{start={%" PRId64 ", %" PRIu32 "}"
			   ", period={%" PRId64 ", %" PRIu32 "}"
			   ", index=%d, flags=",
			(int64_t)perout.start.sec, perout.start.nsec,
			(int64_t)perout.period.sec, perout.period.nsec,
			perout.index);
		printflags(ptp_flags_options, perout.flags, "PTP_???");
		tprints("}");
		break;
	}

	case PTP_ENABLE_PPS:
		tprintf(", %ld", arg);
		break;

	case PTP_SYS_OFFSET: {
		struct ptp_sys_offset sysoff;

		if (entering(tcp)) {
			tprints(", ");
			if (umove_or_printaddr(tcp, arg, &sysoff))
				break;

			tprintf("{n_samples=%u", sysoff.n_samples);
			return 1;
		} 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(", ");
				tprintf("{%" PRId64 ", %" PRIu32 "}",
					(int64_t)sysoff.ts[i].sec,
					sysoff.ts[i].nsec);
			}
			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;

		tprintf("{max_adj=%d, n_alarm=%d, n_ext_ts=%d, n_per_out=%d, pps=%d}",
			caps.max_adj, caps.n_alarm, caps.n_ext_ts,
			caps.n_per_out, caps.pps);
		break;
	}

	default:
		return RVAL_DECODED;
	}

	return RVAL_DECODED | 1;
}