*
* Copyright (C) Arne Bernin <arne@matrix.loopback.org>
*
- * 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
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
*/
+/* no options, no getopt */
-#include "busybox.h"
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <sys/ioctl.h>
+//usage:#define dumpkmap_trivial_usage
+//usage: "> keymap"
+//usage:#define dumpkmap_full_usage "\n\n"
+//usage: "Print a binary keyboard translation table to stdout"
+//usage:
+//usage:#define dumpkmap_example_usage
+//usage: "$ dumpkmap > keymap\n"
+
+#include "libbb.h"
/* From <linux/kd.h> */
struct kbentry {
unsigned char kb_index;
unsigned short kb_value;
};
-#define KDGKBENT 0x4B46 /* gets one entry in translation table */
+#define KDGKBENT 0x4B46 /* gets one entry in translation table */
/* From <linux/keyboard.h> */
-#define NR_KEYS 128
-#define MAX_NR_KEYMAPS 256
+#define NR_KEYS 128
+#define MAX_NR_KEYMAPS 256
-int dumpkmap_main(int argc, char **argv)
+int dumpkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int dumpkmap_main(int argc UNUSED_PARAM, char **argv)
{
struct kbentry ke;
int i, j, fd;
- char flags[MAX_NR_KEYMAPS], magic[] = "bkeymap";
+#define flags bb_common_bufsiz1
- if (argc>=2 && *argv[1]=='-') {
- usage(dumpkmap_usage);
- }
+ /* When user accidentally runs "dumpkmap FILE"
+ * instead of "dumpkmap >FILE", we'd dump binary stuff to tty.
+ * Let's prevent it:
+ */
+ if (argv[1])
+ bb_show_usage();
+/* bb_warn_ignoring_args(argv[1]);*/
- fd = open("/dev/tty0", O_RDWR);
- if (fd < 0) {
- perror_msg("Error opening /dev/tty0");
- return EXIT_FAILURE;
- }
-
- write(1, magic, 7);
+ fd = get_console_fd_or_die();
- for (i=0; i < MAX_NR_KEYMAPS; i++) flags[i]=0;
- flags[0]=1;
- flags[1]=1;
- flags[2]=1;
- flags[4]=1;
- flags[5]=1;
- flags[6]=1;
- flags[8]=1;
- flags[9]=1;
- flags[10]=1;
- flags[12]=1;
-
+#if 0
+ write(STDOUT_FILENO, "bkeymap", 7);
+ /* Here we want to set everything to 0 except for indexes:
+ * [0-2] [4-6] [8-10] [12]
+ */
+ /*memset(flags, 0x00, MAX_NR_KEYMAPS); - already is */
+ memset(flags, 0x01, 13);
+ flags[3] = flags[7] = flags[11] = 0;
/* dump flags */
- for (i=0; i < MAX_NR_KEYMAPS; i++) write(1,&flags[i],1);
+ write(STDOUT_FILENO, flags, MAX_NR_KEYMAPS);
+#define flags7 flags
+#else
+ /* Same effect */
+ /* 0 1 2 3 4 5 6 7 8 9 a b c=12 */
+ memcpy(flags, "bkeymap\1\1\1\0\1\1\1\0\1\1\1\0\1",
+ /* Can use sizeof, or sizeof-1. sizeof is even, using that */
+ /****/ sizeof("bkeymap\1\1\1\0\1\1\1\0\1\1\1\0\1")
+ );
+ write(STDOUT_FILENO, flags, 7 + MAX_NR_KEYMAPS);
+#define flags7 (flags + 7)
+#endif
- for (i = 0; i < MAX_NR_KEYMAPS; i++) {
- if (flags[i] == 1) {
+ for (i = 0; i < 13; i++) {
+ if (flags7[i]) {
for (j = 0; j < NR_KEYS; j++) {
ke.kb_index = j;
ke.kb_table = i;
- if (ioctl(fd, KDGKBENT, &ke) < 0) {
-
- error_msg("ioctl returned: %s, %s, %s, %xqq\n",strerror(errno),(char *)&ke.kb_index,(char *)&ke.kb_table,(int)&ke.kb_value);
- }
- else {
- write(1,(void*)&ke.kb_value,2);
- }
-
+ if (!ioctl_or_perror(fd, KDGKBENT, &ke,
+ "ioctl(KDGKBENT{%d,%d}) failed",
+ j, i)
+ ) {
+ write(STDOUT_FILENO, &ke.kb_value, 2);
+ }
}
}
}
- close(fd);
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ close(fd);
+ }
return EXIT_SUCCESS;
}
projects / platform / upstream / busybox.git / blobdiff