2 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
46 * Open the given provider and at least check if this is a block device.
49 g_open(const char *name, int write)
51 char path[MAXPATHLEN];
55 strlcpy(path, name, sizeof(path));
57 snprintf(path, sizeof(path), "%s%s", _PATH_DEV, name);
59 fd = open(path, write ? O_RDWR : O_RDONLY);
62 /* Let try to get sectorsize, which will prove it is a GEOM provider. */
63 if (g_sectorsize(fd) == -1) {
79 g_ioctl_arg(int fd, unsigned long cmd, void *arg)
84 ret = ioctl(fd, cmd, arg);
87 return (ret >= 0 ? 0 : -1);
91 g_ioctl(int fd, unsigned long cmd)
94 return (g_ioctl_arg(fd, cmd, NULL));
98 * Return media size of the given provider.
105 if (g_ioctl_arg(fd, DIOCGMEDIASIZE, &mediasize) == -1)
111 * Return sector size of the given provider.
118 if (g_ioctl_arg(fd, DIOCGSECTORSIZE, §orsize) == -1)
120 return ((ssize_t)sectorsize);
124 * Call BIO_FLUSH for the given provider.
130 return (g_ioctl(fd, DIOCGFLUSH));
134 * Call BIO_DELETE for the given range.
137 g_delete(int fd, off_t offset, off_t length)
143 return (g_ioctl_arg(fd, DIOCGDELETE, arg));
147 * Return ID of the given provider.
150 g_get_ident(int fd, char *ident, size_t size)
152 char lident[DISK_IDENT_SIZE];
154 if (g_ioctl_arg(fd, DIOCGIDENT, lident) == -1)
156 if (lident[0] == '\0') {
160 if (strlcpy(ident, lident, size) >= size) {
161 errno = ENAMETOOLONG;
168 * Return name of the provider, which has the given ID.
171 g_get_name(const char *ident, char *name, size_t size)
175 fd = g_open_by_ident(ident, 0, name, size);
183 * Find provider name by the given ID.
186 g_open_by_ident(const char *ident, int write, char *name, size_t size)
188 char lident[DISK_IDENT_SIZE];
192 struct gprovider *pp;
195 error = geom_gettree(&mesh);
204 LIST_FOREACH(mp, &mesh.lg_class, lg_class) {
205 LIST_FOREACH(gp, &mp->lg_geom, lg_geom) {
206 LIST_FOREACH(pp, &gp->lg_provider, lg_provider) {
207 fd = g_open(pp->lg_name, write);
210 if (g_get_ident(fd, lident,
211 sizeof(lident)) == -1) {
215 if (strcmp(ident, lident) != 0) {
220 if (name != NULL && strlcpy(name, pp->lg_name,
222 error = ENAMETOOLONG;
230 geom_deletetree(&mesh);