*
*/
-#include "internal.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>
+#include "busybox.h"
+#define BINARY_KEYMAP_MAGIC "bkeymap"
-static const char loadkmap_usage[] = "loadkmap\n"
- "\n"
-
- "\tLoad a binary keyboard translation table from standard input.\n"
- "\n";
+/* 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
+/* From <linux/keyboard.h> */
+#define NR_KEYS 128
+#define MAX_NR_KEYMAPS 256
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];
+ int i, j, fd;
+ u_short ibuff[NR_KEYS];
+ char flags[MAX_NR_KEYMAPS];
+ char buff[7];
- fd = open("/dev/tty0", O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
- return 1;
- }
+ if (argc != 1)
+ bb_show_usage();
- read(0, buff, 7);
- if (0 != strncmp(buff, magic, 7)) {
- fprintf(stderr, "This is not a valid binary keymap.\n");
- return 1;
- }
+ fd = bb_xopen(CURRENT_VC, O_RDWR);
- 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, (char *) ibuff + pos, ibuffsz - pos))
- < 0) {
- fprintf(stderr, "Error reading keymap: %s\n",
- strerror(errno));
- return 1;
- }
- pos += readsz;
- }
+ 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;
}
}
}
- 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;
}