/* vi: set sw=4 ts=4: */ | |
/* | |
* Utility routines. | |
* | |
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> | |
* | |
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details. | |
*/ | |
#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 = xstrdup(devpath); | |
break; | |
} | |
} | |
closedir(dir); | |
return retpath; | |
} |