12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394 |
- /*
- * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
- * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * as published by the Free Software Foundation
- *
- * 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.
- */
- #define _DEFAULT_SOURCE
- #include <sys/stat.h>
- #include <sys/types.h>
- #include <sys/sysmacros.h>
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <unistd.h>
- #include <stdbool.h>
- #include <dirent.h>
- #include <limits.h>
- #include <fnmatch.h>
- #include "libblkid-tiny.h"
- #include <syslog.h>
- static char buf[PATH_MAX];
- static char buf2[PATH_MAX];
- static unsigned int mode = 0600;
- static void make_dev(const char *path, bool block, int major, int minor)
- {
- unsigned int _mode = mode | (block ? S_IFBLK : S_IFCHR);
- mknod(path, _mode, makedev(major, minor));
- }
- static void find_devs(bool block)
- {
- char *path = block ? "/sys/dev/block" : "/sys/dev/char";
- struct dirent *dp;
- DIR *dir;
- dir = opendir(path);
- if (!dir)
- return;
- path = buf2 + sprintf(buf2, "%s/", path);
- while ((dp = readdir(dir)) != NULL) {
- char *c;
- int major = 0, minor = 0;
- int len;
- if (dp->d_type != DT_LNK)
- continue;
- if (sscanf(dp->d_name, "%d:%d", &major, &minor) != 2)
- continue;
- strcpy(path, dp->d_name);
- len = readlink(buf2, buf, sizeof(buf));
- if (len <= 0)
- continue;
- buf[len] = 0;
- c = strrchr(buf, '/');
- if (!c)
- continue;
- c++;
- make_dev(c, block, major, minor);
- }
- closedir(dir);
- }
- int mkblkdev(void)
- {
- if (chdir("/dev"))
- return 1;
- mode = 0600;
- find_devs(true);
- return chdir("/");
- }
|