g_label_disk_ident.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 2012 Ivan Voras <ivoras@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/11.0/sys/geom/label/g_label_disk_ident.c 249571 2013-04-16 22:42:40Z ivoras $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/systm.h>
   32 #include <sys/kernel.h>
   33 #include <sys/malloc.h>
   34 
   35 #include <geom/geom.h>
   36 #include <geom/geom_disk.h>
   37 #include <geom/label/g_label.h>
   38 #include <geom/multipath/g_multipath.h>
   39 
   40 
   41 #define G_LABEL_DISK_IDENT_DIR  "diskid"
   42 
   43 static char* classes_pass[] = { G_DISK_CLASS_NAME, G_MULTIPATH_CLASS_NAME,
   44     NULL };
   45 
   46 static void
   47 g_label_disk_ident_taste(struct g_consumer *cp, char *label, size_t size)
   48 {
   49         struct g_class *cls;
   50         char ident[100];
   51         int ident_len, found, i;
   52 
   53         g_topology_assert_not();
   54         label[0] = '\0';
   55 
   56         cls = cp->provider->geom->class;
   57 
   58         /* 
   59          * Get the GEOM::ident string, and construct a label in the format
   60          * "CLASS_NAME-ident"
   61          */
   62         ident_len = sizeof(ident);
   63         if (g_io_getattr("GEOM::ident", cp, &ident_len, ident) == 0) {
   64                 if (ident_len == 0 || ident[0] == '\0')
   65                         return;
   66                 for (i = 0, found = 0; classes_pass[i] != NULL; i++)
   67                         if (strcmp(classes_pass[i], cls->name) == 0) {
   68                                 found = 1;
   69                                 break;
   70                         }
   71                 if (!found)
   72                         return;
   73                 /*
   74                  * We can safely ignore the result of snprintf(): the label
   75                  * will simply be truncated, which at most is only annoying.
   76                  */
   77                 (void)snprintf(label, size, "%s-%s", cls->name, ident);
   78         }
   79 }
   80 
   81 struct g_label_desc g_label_disk_ident = {
   82         .ld_taste = g_label_disk_ident_taste,
   83         .ld_dir = G_LABEL_DISK_IDENT_DIR,
   84         .ld_enabled = 1
   85 };
   86 
   87 G_LABEL_INIT(disk_ident, g_label_disk_ident, "Create device nodes for drives "
   88     "which export a disk identification string");

Cache object: 74d4bef86467d76f67a7eac790e7f9da

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/geom/label/g_label_disk_ident.c

FreeBSD/Linux Kernel Cross Reference
sys/geom/label/g_label_disk_ident.c