90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/* $NetBSD: getdiskrawname.c,v 1.1 2012/04/07 16:44:39 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2012 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Christos Zoulas.
|
|
*
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
|
|
__RCSID("$NetBSD: getdiskrawname.c,v 1.1 2012/04/07 16:44:39 christos Exp $");
|
|
|
|
#include <sys/stat.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <util.h>
|
|
|
|
const char *
|
|
getdiskrawname(char *buf, size_t bufsiz, const char *name)
|
|
{
|
|
const char *dp = strrchr(name, '/');
|
|
struct stat st;
|
|
|
|
if (dp == NULL) {
|
|
errno = EINVAL;
|
|
return NULL;
|
|
}
|
|
|
|
if (stat(name, &st) == -1)
|
|
return NULL;
|
|
|
|
if (!S_ISBLK(st.st_mode)) {
|
|
errno = EFTYPE;
|
|
return NULL;
|
|
}
|
|
|
|
(void)snprintf(buf, bufsiz, "%.*s/r%s", (int)(dp - name), name, dp + 1);
|
|
|
|
return buf;
|
|
}
|
|
|
|
const char *
|
|
getdiskcookedname(char *buf, size_t bufsiz, const char *name)
|
|
{
|
|
const char *dp;
|
|
struct stat st;
|
|
|
|
if ((dp = strrchr(name, '/')) == NULL) {
|
|
errno = EINVAL;
|
|
return NULL;
|
|
}
|
|
if (stat(name, &st) == -1)
|
|
return NULL;
|
|
|
|
if (!S_ISCHR(st.st_mode)) {
|
|
errno = EFTYPE;
|
|
return NULL;
|
|
}
|
|
if (dp[1] != 'r') {
|
|
errno = EINVAL;
|
|
return NULL;
|
|
}
|
|
(void)snprintf(buf, bufsiz, "%.*s/%s", (int)(dp - name), name, dp + 2);
|
|
|
|
return buf;
|
|
}
|