/* 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; }