*
*/
-#include "internal.h"
+#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"
-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;
+};
+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;
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];
+ char flags[MAX_NR_KEYMAPS], buff[7];
+
+ if (argc != 1)
+ usage(loadkmap_usage);
fd = open("/dev/tty0", O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
- return 1;
- }
+ if (fd < 0)
+ perror_msg_and_die("Error opening /dev/tty0");
read(0, buff, 7);
- if (0 != strncmp(buff, magic, 7)) {
- fprintf(stderr, "This is not a valid binary keymap.\n");
- return 1;
- }
+ if (0 != strncmp(buff, BINARY_KEYMAP_MAGIC, 7))
+ error_msg_and_die("This is not a valid binary keymap.\n");
- 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;
- }
+ 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++) {
}
}
}
- 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;
}