-#include "internal.h"
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini loadkmap implementation for busybox
+ *
+ * Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
-#include <linux/kd.h>
-#include <linux/keyboard.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
#include <sys/ioctl.h>
+#include "busybox.h"
+
+#define BINARY_KEYMAP_MAGIC "bkeymap"
+/* From <linux/kd.h> */
+struct kbentry {
+ unsigned char kb_table;
+ unsigned char kb_index;
+ unsigned short kb_value;
+};
+/* sets one entry in translation table */
+#define KDSKBENT 0x4B47
-const char loadkmap_usage[] = "loadkmap\n"
-"\n"
-"\tLoad a binary keyboard translation table from standard input.\n"
-"\n";
+/* From <linux/keyboard.h> */
+#define NR_KEYS 128
+#define MAX_NR_KEYMAPS 256
+int loadkmap_main(int argc, char **argv)
+{
+ struct kbentry ke;
+ int i, j, fd;
+ u_short ibuff[NR_KEYS];
+ char flags[MAX_NR_KEYMAPS];
+ char buff[7];
-int
-loadkmap_main(int argc, char * * argv)
-{
- struct kbentry ke;
- u_short *ibuff;
- int i,j,fd,readsz,pos,ibuffsz=NR_KEYS * sizeof(u_short);
- char flags[MAX_NR_KEYMAPS],magic[]="bkeymap",buff[7];
+ if (argc != 1)
+ bb_show_usage();
- fd = open("/dev/tty0", O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
- return 1;
- }
+ fd = bb_xopen(CURRENT_VC, O_RDWR);
- read(0,buff,7);
- if (0 != strncmp(buff,magic,7)) {
- fprintf(stderr, "This is not a valid binary keymap.\n");
- return 1;
- }
-
- if ( MAX_NR_KEYMAPS != read(0,flags,MAX_NR_KEYMAPS) ) {
- fprintf(stderr, "Error reading keymap flags: %s\n", strerror(errno));
- return 1;
- }
+ if ((bb_full_read(0, buff, 7) != 7) || (strncmp(buff, BINARY_KEYMAP_MAGIC, 7) != 0))
+ bb_error_msg_and_die("This is not a valid binary keymap.");
- ibuff=(u_short *) malloc(ibuffsz);
- if (!ibuff) {
- fprintf(stderr, "Out of memory.\n");
- return 1;
- }
+ if (bb_full_read(0, flags, MAX_NR_KEYMAPS) != MAX_NR_KEYMAPS)
+ bb_perror_msg_and_die("Error reading keymap flags");
- for(i=0; i<MAX_NR_KEYMAPS; i++) {
- if (flags[i]==1){
- pos=0;
- while (pos < ibuffsz) {
- if ( (readsz = read(0,ibuff+pos,ibuffsz-pos)) < 0 ) {
- fprintf(stderr, "Error reading keymap: %s\n",
- strerror(errno));
- return 1;
- }
- pos += readsz;
- }
- for(j=0; j<NR_KEYS; j++) {
- ke.kb_index = j;
- ke.kb_table = i;
- ke.kb_value = ibuff[j];
- ioctl(fd, KDSKBENT, &ke);
- }
+ for (i = 0; i < MAX_NR_KEYMAPS; i++) {
+ if (flags[i] == 1) {
+ bb_full_read(0, ibuff, NR_KEYS * sizeof(u_short));
+ for (j = 0; j < NR_KEYS; j++) {
+ ke.kb_index = j;
+ ke.kb_table = i;
+ ke.kb_value = ibuff[j];
+ ioctl(fd, KDSKBENT, &ke);
+ }
+ }
}
- }
- close (fd);
- return 0;
+
+ /* Don't bother to close files. Exit does that
+ * automagically, so we can save a few bytes */
+ /* close(fd); */
+ return EXIT_SUCCESS;
}