schemes/mem/mem_util.c

	mem_util.c revision a298b85fd4d5149fdcc1bae48f9baab83a0390c9
/*
 * 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"

#include <mem.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/mem.h>
#include <fm/fmd_fmri.h>

#ifdef sparc
#include <sys/fm/ldom.h>
extern ldom_hdl_t *mem_scheme_lhp;
#endif

void
mem_strarray_free(char **arr, size_t dim)
{
    int i;

    for (i = 0; i < dim; i++) {
        if (arr[i] != NULL)
            fmd_fmri_strfree(arr[i]);
    }
    fmd_fmri_free(arr, sizeof (char *) * dim);
}

int
mem_page_cmd(int cmd, nvlist_t *nvl)
{
#ifdef sparc
    int rc;

    if (cmd == MEM_PAGE_ISRETIRED || cmd == MEM_PAGE_FMRI_ISRETIRED) {
        rc = ldom_fmri_status(mem_scheme_lhp, nvl);
    } else if (cmd == MEM_PAGE_RETIRE || cmd == MEM_PAGE_FMRI_RETIRE) {
        rc = ldom_fmri_retire(mem_scheme_lhp, nvl);
    } else {
        errno = ENOTSUP;
        return (-1);
    }

    /* Make the return value and errno value similar to the ioctl() call */
    if (rc > 0) {
        errno = rc;
        return (-1);
    }

    return (0);
#else
    mem_page_t mpage;
    char *fmribuf;
    size_t fmrisz;
    int fd, rc, err;

    if ((fd = open("/dev/mem", O_RDONLY)) < 0)
        return (-1); /* errno is set for us */

    if ((errno = nvlist_size(nvl, &fmrisz, NV_ENCODE_NATIVE)) != 0 ||
        fmrisz > MEM_FMRI_MAX_BUFSIZE ||
        (fmribuf = fmd_fmri_alloc(fmrisz)) == NULL) {
        (void) close(fd);
        return (-1); /* errno is set for us */
    }

    if ((errno = nvlist_pack(nvl, &fmribuf, &fmrisz,
        NV_ENCODE_NATIVE, 0)) != 0) {
        fmd_fmri_free(fmribuf, fmrisz);
        (void) close(fd);
        return (-1); /* errno is set for us */
    }

    mpage.m_fmri = fmribuf;
    mpage.m_fmrisz = fmrisz;

    if ((rc = ioctl(fd, cmd, &mpage)) < 0)
        err = errno;

    fmd_fmri_free(fmribuf, fmrisz);

    (void) close(fd);

    if (rc < 0) {
        errno = err;
        return (-1);
    }

    return (0);
#endif
}