*
* 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 <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/ioctl.h>
-#include "busybox.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;
};
-static const int KDGKBENT = 0x4B46; /* gets one entry in translation table */
+#define KDGKBENT 0x4B46 /* gets one entry in translation table */
/* From <linux/keyboard.h> */
-static const int NR_KEYS = 128;
-static const int 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";
+ RESERVE_CONFIG_BUFFER(flags, MAX_NR_KEYMAPS);
- if (argc >= 2 && *argv[1] == '-')
+ /* 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 = bb_xopen(CURRENT_VC, O_RDWR);
+ fd = get_console_fd_or_die();
- write(1, magic, 7);
+ write(STDOUT_FILENO, "bkeymap", 7);
- 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;
+ /* Here we want to set everything to 0 except for indexes:
+ * [0-2] [4-6] [8-10] [12] */
+ memset(flags, 0x00, MAX_NR_KEYMAPS);
+ 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);
for (i = 0; i < MAX_NR_KEYMAPS; i++) {
if (flags[i] == 1) {
for (j = 0; j < NR_KEYS; j++) {
ke.kb_index = j;
ke.kb_table = i;
- if (ioctl(fd, KDGKBENT, &ke) < 0) {
- bb_perror_msg("ioctl failed with %s, %s, %p",
+ if (!ioctl_or_perror(fd, KDGKBENT, &ke,
+ "ioctl failed with %s, %s, %p",
(char *)&ke.kb_index,
(char *)&ke.kb_table,
- &ke.kb_value);
- } else {
- write(1, (void*)&ke.kb_value, 2);
+ &ke.kb_value)
+ ) {
+ write(STDOUT_FILENO, (void*)&ke.kb_value, 2);
}
}
}
}
- close(fd);
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ close(fd);
+ RELEASE_CONFIG_BUFFER(flags);
+ }
return EXIT_SUCCESS;
}