-#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 "busybox.h"
#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>
+#define BINARY_KEYMAP_MAGIC "bkeymap"
+
+/* From <linux/kd.h> */
+struct kbentry {
+ unsigned char kb_table;
+ unsigned char kb_index;
+ unsigned short kb_value;
+};
+static const int KDSKBENT = 0x4B47; /* sets one entry in translation table */
+
+/* From <linux/keyboard.h> */
+static const int NR_KEYS = 128;
+static const int MAX_NR_KEYMAPS = 256;
-static const char loadkmap_usage[] = "loadkmap\n"
-"\n"
-"\tLoad a binary keyboard translation table from standard input.\n"
-"\n";
+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], buff[7];
+ if (argc != 1)
+ usage(loadkmap_usage);
-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];
+ fd = open("/dev/tty0", O_RDWR);
+ if (fd < 0)
+ perror_msg_and_die("Error opening /dev/tty0");
- fd = open("/dev/tty0", O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
- return 1;
- }
+ read(0, buff, 7);
+ if (0 != strncmp(buff, BINARY_KEYMAP_MAGIC, 7))
+ error_msg_and_die("This is not a valid binary keymap.");
- 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 (MAX_NR_KEYMAPS != read(0, flags, MAX_NR_KEYMAPS))
+ perror_msg_and_die("Error reading keymap flags");
- ibuff=(u_short *) malloc(ibuffsz);
- if (!ibuff) {
- fprintf(stderr, "Out of memory.\n");
- return 1;
- }
+ ibuff = (u_short *) xmalloc(ibuffsz);
- for(i=0; i<MAX_NR_KEYMAPS; i++) {
- if (flags[i]==1){
- pos=0;
- while (pos < ibuffsz) {
- if ( (readsz = read(0,(char *)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) {
+ pos = 0;
+ while (pos < ibuffsz) {
+ if ((readsz = read(0, (char *) ibuff + pos, ibuffsz - pos)) < 0)
+ perror_msg_and_die("Error reading keymap");
+ 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);
+ }
+ }
}
- }
- 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;
}