2c385d51ce
Display attribute in future error strings and differentiate g_handleattr() error messages for ease of debugging in the future. "g_handleattr: md1 bio_length 24 strlen 31 -> EFAULT" Reported by: swills Reviewed by: imp cem avg Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D14962
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2012 Ivan Voras <ivoras@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
|
|
#include <geom/geom.h>
|
|
#include <geom/geom_disk.h>
|
|
#include <geom/label/g_label.h>
|
|
#include <geom/multipath/g_multipath.h>
|
|
|
|
|
|
#define G_LABEL_DISK_IDENT_DIR "diskid"
|
|
|
|
static char* classes_pass[] = { G_DISK_CLASS_NAME, G_MULTIPATH_CLASS_NAME,
|
|
NULL };
|
|
|
|
static void
|
|
g_label_disk_ident_taste(struct g_consumer *cp, char *label, size_t size)
|
|
{
|
|
struct g_class *cls;
|
|
char ident[DISK_IDENT_SIZE];
|
|
int ident_len, found, i;
|
|
|
|
g_topology_assert_not();
|
|
label[0] = '\0';
|
|
|
|
cls = cp->provider->geom->class;
|
|
|
|
/*
|
|
* Get the GEOM::ident string, and construct a label in the format
|
|
* "CLASS_NAME-ident"
|
|
*/
|
|
ident_len = sizeof(ident);
|
|
if (g_io_getattr("GEOM::ident", cp, &ident_len, ident) == 0) {
|
|
if (ident_len == 0 || ident[0] == '\0')
|
|
return;
|
|
for (i = 0, found = 0; classes_pass[i] != NULL; i++)
|
|
if (strcmp(classes_pass[i], cls->name) == 0) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
if (!found)
|
|
return;
|
|
/*
|
|
* We can safely ignore the result of snprintf(): the label
|
|
* will simply be truncated, which at most is only annoying.
|
|
*/
|
|
(void)snprintf(label, size, "%s-%s", cls->name, ident);
|
|
}
|
|
}
|
|
|
|
struct g_label_desc g_label_disk_ident = {
|
|
.ld_taste = g_label_disk_ident_taste,
|
|
.ld_dir = G_LABEL_DISK_IDENT_DIR,
|
|
.ld_enabled = 1
|
|
};
|
|
|
|
G_LABEL_INIT(disk_ident, g_label_disk_ident, "Create device nodes for drives "
|
|
"which export a disk identification string");
|