ceph/src/spdk/lib/scsi/port.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
   5  *   Copyright (c) Intel Corporation.
   6  *   All rights reserved.
   7  *
   8  *   Redistribution and use in source and binary forms, with or without
   9  *   modification, are permitted provided that the following conditions
  10  *   are met:
  11  *
  12  *     * Redistributions of source code must retain the above copyright
  13  *       notice, this list of conditions and the following disclaimer.
  14  *     * Redistributions in binary form must reproduce the above copyright
  15  *       notice, this list of conditions and the following disclaimer in
  16  *       the documentation and/or other materials provided with the
  17  *       distribution.
  18  *     * Neither the name of Intel Corporation nor the names of its
  19  *       contributors may be used to endorse or promote products derived
  20  *       from this software without specific prior written permission.
  21  *
  22  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include "scsi_internal.h"
  36
  37 struct spdk_scsi_port *
  38 spdk_scsi_port_create(uint64_t id, uint16_t index, const char *name)
  39 {
  40         struct spdk_scsi_port *port;
  41
  42         port = calloc(1, sizeof(struct spdk_scsi_port));
  43
  44         if (!port) {
  45                 return NULL;
  46         }
  47
  48         if (spdk_scsi_port_construct(port, id, index, name) != 0) {
  49                 spdk_scsi_port_free(&port);
  50                 return NULL;
  51         }
  52
  53         return port;
  54 }
  55
  56 void
  57 spdk_scsi_port_free(struct spdk_scsi_port **pport)
  58 {
  59         struct spdk_scsi_port *port;
  60
  61         if (!pport) {
  62                 return;
  63         }
  64
  65         port = *pport;
  66         *pport = NULL;
  67         free(port);
  68 }
  69
  70 int
  71 spdk_scsi_port_construct(struct spdk_scsi_port *port, uint64_t id, uint16_t index,
  72                          const char *name)
  73 {
  74         if (strlen(name) >= sizeof(port->name)) {
  75                 SPDK_ERRLOG("port name too long\n");
  76                 return -1;
  77         }
  78
  79         port->is_used = 1;
  80         port->id = id;
  81         port->index = index;
  82         snprintf(port->name, sizeof(port->name), "%s", name);
  83         return 0;
  84 }
  85
  86 void
  87 spdk_scsi_port_destruct(struct spdk_scsi_port *port)
  88 {
  89         memset(port, 0, sizeof(struct spdk_scsi_port));
  90 }
  91
  92 const char *
  93 spdk_scsi_port_get_name(const struct spdk_scsi_port *port)
  94 {
  95         return port->name;
  96 }