*
* Copyright (C) Arne Bernin <arne@matrix.loopback.org>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
*/
+/* no options, no getopt */
-#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 {
#define NR_KEYS 128
#define MAX_NR_KEYMAPS 256
-int dumpkmap_main(int argc, char **argv);
-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];
+ RESERVE_CONFIG_BUFFER(flags, MAX_NR_KEYMAPS);
- if (argc >= 2 && argv[1][0] == '-')
+ /* 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 = xopen(CURRENT_VC, O_RDWR);
+ fd = get_console_fd_or_die();
- write(1, "bkeymap", 7);
+ write(STDOUT_FILENO, "bkeymap", 7);
/* Here we want to set everything to 0 except for indexes:
* [0-2] [4-6] [8-10] [12] */
flags[3] = flags[7] = flags[11] = 0;
/* dump flags */
- write(1, flags, MAX_NR_KEYMAPS);
+ 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;
}