diff options
Diffstat (limited to 'busybox/miscutils/makedevs.c')
-rw-r--r-- | busybox/miscutils/makedevs.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/busybox/miscutils/makedevs.c b/busybox/miscutils/makedevs.c new file mode 100644 index 0000000..54a2e00 --- /dev/null +++ b/busybox/miscutils/makedevs.c @@ -0,0 +1,93 @@ +/* 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 = atoi(argv[3]); + Sminor = 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 +} +*/ |