1/* mknod.c - make block or character special file 2 * 3 * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com> 4 * 5 * http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/mknod.html 6 7USE_MKNOD(NEWTOY(mknod, "<2>4m(mode):", TOYFLAG_BIN|TOYFLAG_UMASK)) 8 9config MKNOD 10 bool "mknod" 11 default y 12 help 13 usage: mknod [-m MODE] NAME TYPE [MAJOR MINOR] 14 15 Create a special file NAME with a given type. TYPE is b for block device, 16 c or u for character device, p for named pipe (which ignores MAJOR/MINOR). 17 18 -m Mode (file permissions) of new device, in octal or u+x format 19*/ 20 21#define FOR_mknod 22#include "toys.h" 23 24GLOBALS( 25 char *m; 26) 27 28void mknod_main(void) 29{ 30 mode_t modes[] = {S_IFIFO, S_IFCHR, S_IFCHR, S_IFBLK}; 31 int major=0, minor=0, type; 32 int mode = TT.m ? string_to_mode(TT.m, 0777) : 0660; 33 34 type = stridx("pcub", *toys.optargs[1]); 35 if (type == -1) perror_exit("bad type '%c'", *toys.optargs[1]); 36 if (type) { 37 if (toys.optc != 4) perror_exit("need major/minor"); 38 39 major = atoi(toys.optargs[2]); 40 minor = atoi(toys.optargs[3]); 41 } 42 43 if (mknod(toys.optargs[0], mode | modes[type], makedev(major, minor))) 44 perror_exit("mknod %s failed", toys.optargs[0]); 45} 46