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/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <dirent.h>
#include <stdlib.h>
#include "libbb.h"
char *find_block_device(char *path)
{
DIR *dir;
struct dirent *entry;
struct stat st;
dev_t dev;
char *retpath=NULL;
if(stat(path, &st) || !(dir = opendir("/dev"))) return NULL;
dev = (st.st_mode & S_IFMT) == S_IFBLK ? st.st_rdev : st.st_dev;
while((entry = readdir(dir)) != NULL) {
char devpath[PATH_MAX];
sprintf(devpath,"/dev/%s", entry->d_name);
if(!stat(devpath, &st) && S_ISBLK(st.st_mode) && st.st_rdev == dev) {
retpath = bb_xstrdup(devpath);
break;
}
}
closedir(dir);
return retpath;
}
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