mpxu/common/configlog.c

	configlog.c revision 03831d35f7499c87d51205817c93e9a8d42c4bae
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * config.c: support for the scadm configlog option (to display the
 * service processor configuration log)
 */

#include <libintl.h>
#include <stdio.h>
#include <string.h>
#include <time.h>  /* required by librsc.h */
#include <limits.h>

#include "librsc.h"
#include "adm.h"

/* #define DEBUG */

void
ADM_Process_fru_log(int all)
{
    rscp_msg_t      Message;
    struct timespec     Timeout;
    dp_get_config_log_r_t   *rscReply;
    rsci64          bytes_remaining, seqno;
    rsci16          request_size, response_size;
    dp_get_config_log_t rscCmd;

    ADM_Start();

    /*
     * Start by sending a zero-length request to ALOM, so that
     * we can learn the length of the console log.  We expect
     * ALOM to return the length of the entire log.  We get
     * a snapshot of the length of the log here - it may however
     * continue to grow as we're reading it.  We read only as
     * much of the log as we get in this snapshot.
     */
    rscCmd.start_seq = 0;
    rscCmd.length = 0;
    Message.type = DP_GET_CONFIG_LOG;
    Message.len = sizeof (rscCmd);
    Message.data = (char *)&rscCmd;
    ADM_Send(&Message);

    Timeout.tv_nsec = 0;
    Timeout.tv_sec  = ADM_TIMEOUT;
    ADM_Recv(&Message, &Timeout,
        DP_GET_CONFIG_LOG_R, sizeof (*rscReply));

    rscReply = (dp_get_config_log_r_t *)Message.data;

    /*
     * If we do not want the whole log, and the log is bigger than
     * the length limit, then fetch just the last ADM_DEFAULT_LOG_LENGTH
     * bytes from the log.  Else just get the whole thing.
     */
    if ((all == 0) && (rscReply->remaining_log_bytes >
        ADM_DEFAULT_LOG_LENGTH)) {
        bytes_remaining = ADM_DEFAULT_LOG_LENGTH;
        seqno = (rscReply->remaining_log_bytes +
            rscReply->next_seq) - bytes_remaining;
    } else {
        bytes_remaining = rscReply->remaining_log_bytes;
        seqno = rscReply->next_seq;
    }
    request_size = sizeof (rscReply->buffer);
    ADM_Free(&Message);

    /*
     * Timeout for RSC response.
     */
    Timeout.tv_nsec = 0;
    Timeout.tv_sec  = ADM_TIMEOUT;

    /*
     * This loop runs as long as there is data in the log, or until
     * we hit the default limit (above).  It's possible that ALOM may
     * shrink the log - we need to account for this.  If ALOM returns
     * no data, we bail out.
     */
    while (bytes_remaining) {
        rscCmd.start_seq = seqno;
        rscCmd.length = (bytes_remaining < request_size) ?
            bytes_remaining : request_size;
        Message.type = DP_GET_CONFIG_LOG;
        Message.len = sizeof (rscCmd);
        Message.data = (char *)&rscCmd;
        ADM_Send(&Message);

        ADM_Recv(&Message, &Timeout,
            DP_GET_CONFIG_LOG_R, sizeof (*rscReply));

        rscReply = (dp_get_config_log_r_t *)Message.data;

        /* If ALOM returns zero bytes, we're done. */
        response_size = rscReply->length;
        if (response_size == 0) {
            ADM_Free(&Message);
            break;
        }
        bytes_remaining -= response_size;
        if (rscReply->remaining_log_bytes < bytes_remaining) {
            bytes_remaining = rscReply->remaining_log_bytes;
        }

        /*
         * If the byte at the original sequence number is no
         * longer in the log, print a message.
         */
        if (rscReply->next_seq > seqno + response_size) {
            printf(gettext("\nscadm: lost %d bytes of log data\n"),
                rscReply->next_seq - (seqno + response_size));
        }
        seqno = rscReply->next_seq;

        /* Print the config log */
        if (fwrite(rscReply->buffer, sizeof (char), response_size,
            stdout) != response_size) {
            perror(gettext("\ncouldn't write config log buffer"
                " to stdout"));
            ADM_Free(&Message);
            break;
        }
        ADM_Free(&Message);
    }
    putchar('\n');
}