| /* vi: set sw=4 ts=4: */ |
| /* |
| * public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com> |
| * |
| * makedevs |
| * Make ranges of device files quickly. |
| * known bugs: can't deal with alpha ranges |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <sys/sysmacros.h> /* major() and minor() */ |
| #include "busybox.h" |
| |
| int makedevs_main(int argc, char **argv) |
| { |
| mode_t mode; |
| char *basedev, *type, *nodname, buf[255]; |
| int Smajor, Sminor, S, E; |
| |
| if (argc < 7 || *argv[1]=='-') |
| bb_show_usage(); |
| |
| basedev = argv[1]; |
| type = argv[2]; |
| Smajor = major(atoi(argv[3])); |
| Sminor = minor(atoi(argv[4])); |
| S = atoi(argv[5]); |
| E = atoi(argv[6]); |
| nodname = argc == 8 ? basedev : buf; |
| |
| mode = 0660; |
| |
| switch (type[0]) { |
| case 'c': |
| mode |= S_IFCHR; |
| break; |
| case 'b': |
| mode |= S_IFBLK; |
| break; |
| case 'f': |
| mode |= S_IFIFO; |
| break; |
| default: |
| bb_show_usage(); |
| } |
| |
| while (S <= E) { |
| int sz; |
| |
| sz = snprintf(buf, sizeof(buf), "%s%d", basedev, S); |
| if(sz<0 || sz>=sizeof(buf)) /* libc different */ |
| bb_error_msg_and_die("%s too large", basedev); |
| |
| /* if mode != S_IFCHR and != S_IFBLK third param in mknod() ignored */ |
| |
| if (mknod(nodname, mode, makedev(Smajor, Sminor))) |
| bb_error_msg("Failed to create: %s", nodname); |
| |
| if (nodname == basedev) /* ex. /dev/hda - to /dev/hda1 ... */ |
| nodname = buf; |
| S++; |
| Sminor++; |
| } |
| |
| return 0; |
| } |
| |
| /* |
| And this is what this program replaces. The shell is too slow! |
| |
| makedev () { |
| local basedev=$1; local S=$2; local E=$3 |
| local major=$4; local Sminor=$5; local type=$6 |
| local sbase=$7 |
| |
| if [ ! "$sbase" = "" ]; then |
| mknod "$basedev" $type $major $Sminor |
| S=`expr $S + 1` |
| Sminor=`expr $Sminor + 1` |
| fi |
| |
| while [ $S -le $E ]; do |
| mknod "$basedev$S" $type $major $Sminor |
| S=`expr $S + 1` |
| Sminor=`expr $Sminor + 1` |
| done |
| } |
| */ |