usr/src/cmd/fm/modules/sun4v/generic-mem/gmem_fmri.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26
  27 #include <errno.h>
  28 #include <strings.h>
  29
  30 #include <gmem_fmri.h>
  31 #include <gmem.h>
  32
  33 void
  34 gmem_fmri_init(fmd_hdl_t *hdl, gmem_fmri_t *fmri, nvlist_t *nvl,
  35     const char *fmt, ...)
  36 {
  37         va_list ap;
  38
  39         va_start(ap, fmt);
  40         gmem_vbufname(fmri->fmri_packnm, sizeof (fmri->fmri_packnm), fmt, ap);
  41         va_end(ap);
  42
  43         if ((errno = nvlist_dup(nvl, &fmri->fmri_nvl, 0)) != 0 ||
  44             (errno = nvlist_size(nvl, &fmri->fmri_packsz,
  45             NV_ENCODE_NATIVE)) != 0)
  46                 fmd_hdl_abort(hdl, "failed to copy fmri for fmri create");
  47
  48         fmri->fmri_packbuf = fmd_hdl_alloc(hdl, fmri->fmri_packsz, FMD_SLEEP);
  49
  50         if ((errno = nvlist_pack(nvl, &fmri->fmri_packbuf, &fmri->fmri_packsz,
  51             NV_ENCODE_NATIVE, 0)) != 0)
  52                 fmd_hdl_abort(hdl, "failed to pack fmri for fmri create");
  53
  54         gmem_fmri_write(hdl, fmri);
  55 }
  56
  57 void
  58 gmem_fmri_fini(fmd_hdl_t *hdl, gmem_fmri_t *fmri, int destroy)
  59 {
  60         if (destroy)
  61                 fmd_buf_destroy(hdl, NULL, fmri->fmri_packnm);
  62
  63         fmd_hdl_free(hdl, fmri->fmri_packbuf, fmri->fmri_packsz);
  64         nvlist_free(fmri->fmri_nvl);
  65 }
  66
  67 void
  68 gmem_fmri_restore(fmd_hdl_t *hdl, gmem_fmri_t *fmri)
  69 {
  70         if (fmd_buf_size(hdl, NULL, fmri->fmri_packnm) == 0) {
  71                 bzero(fmri, sizeof (gmem_fmri_t));
  72                 return;
  73         }
  74
  75         if ((fmri->fmri_packbuf = gmem_buf_read(hdl, NULL, fmri->fmri_packnm,
  76             fmri->fmri_packsz)) == NULL) {
  77                 fmd_hdl_abort(hdl, "failed to read fmri buffer %s",
  78                     fmri->fmri_packnm);
  79         }
  80
  81         if (nvlist_unpack(fmri->fmri_packbuf, fmri->fmri_packsz,
  82             &fmri->fmri_nvl, 0) != 0) {
  83                 fmd_hdl_abort(hdl, "failed to unpack fmri buffer %s\n",
  84                     fmri->fmri_packnm);
  85         }
  86 }
  87
  88 void
  89 gmem_fmri_write(fmd_hdl_t *hdl, gmem_fmri_t *fmri)
  90 {
  91         size_t sz;
  92
  93         if ((sz = fmd_buf_size(hdl, NULL, fmri->fmri_packnm)) !=
  94             fmri->fmri_packsz && sz != 0)
  95                 fmd_buf_destroy(hdl, NULL, fmri->fmri_packnm);
  96
  97         fmd_buf_write(hdl, NULL, fmri->fmri_packnm, fmri->fmri_packbuf,
  98             fmri->fmri_packsz);
  99 }