-#include "internal.h"
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <linux/kd.h>
-#include <linux/keyboard.h>
-#include <sys/ioctl.h>
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini loadkmap implementation for busybox
+ *
+ * Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+//usage:#define loadkmap_trivial_usage
+//usage: "< keymap"
+//usage:#define loadkmap_full_usage "\n\n"
+//usage: "Load a binary keyboard translation table from stdin"
+////usage: "\n"
+////usage: "\n -C TTY Affect TTY instead of /dev/tty"
+//usage:
+//usage:#define loadkmap_example_usage
+//usage: "$ loadkmap < /etc/i18n/lang-keymap\n"
-static const char loadkmap_usage[] = "loadkmap\n"
-"\n"
-"\tLoad a binary keyboard translation table from standard input.\n"
-"\n";
+#include "libbb.h"
+#define BINARY_KEYMAP_MAGIC "bkeymap"
-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];
+/* 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
- fd = open("/dev/tty0", O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
- return 1;
- }
+/* From <linux/keyboard.h> */
+#define NR_KEYS 128
+#define MAX_NR_KEYMAPS 256
- read(0,buff,7);
- if (0 != strncmp(buff,magic,7)) {
- fprintf(stderr, "This is not a valid binary keymap.\n");
- return 1;
- }
-
- if ( MAX_NR_KEYMAPS != read(0,flags,MAX_NR_KEYMAPS) ) {
- fprintf(stderr, "Error reading keymap flags: %s\n", strerror(errno));
- return 1;
- }
+int loadkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int loadkmap_main(int argc UNUSED_PARAM, char **argv)
+{
+ struct kbentry ke;
+ int i, j, fd;
+ uint16_t ibuff[NR_KEYS];
+/* const char *tty_name = CURRENT_TTY; */
+ RESERVE_CONFIG_BUFFER(flags, MAX_NR_KEYMAPS);
- ibuff=(u_short *) malloc(ibuffsz);
- if (!ibuff) {
- fprintf(stderr, "Out of memory.\n");
- return 1;
- }
+ /* When user accidentally runs "loadkmap FILE"
+ * instead of "loadkmap <FILE", we end up waiting for input from tty.
+ * Let's prevent it: */
+ if (argv[1])
+ bb_show_usage();
+/* bb_warn_ignoring_args(argv[1]); */
- 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;
- }
- for(j=0; j<NR_KEYS; j++) {
- ke.kb_index = j;
- ke.kb_table = i;
- ke.kb_value = ibuff[j];
- ioctl(fd, KDSKBENT, &ke);
- }
+ fd = get_console_fd_or_die();
+/* or maybe:
+ opt = getopt32(argv, "C:", &tty_name);
+ fd = xopen_nonblocking(tty_name);
+*/
+
+ xread(STDIN_FILENO, flags, 7);
+ if (!is_prefixed_with(flags, BINARY_KEYMAP_MAGIC))
+ bb_error_msg_and_die("not a valid binary keymap");
+
+ xread(STDIN_FILENO, flags, MAX_NR_KEYMAPS);
+
+ for (i = 0; i < MAX_NR_KEYMAPS; i++) {
+ if (flags[i] != 1)
+ continue;
+ xread(STDIN_FILENO, ibuff, NR_KEYS * sizeof(uint16_t));
+ for (j = 0; j < NR_KEYS; j++) {
+ ke.kb_index = j;
+ ke.kb_table = i;
+ ke.kb_value = ibuff[j];
+ /*
+ * Note: table[idx:0] can contain special value
+ * K_ALLOCATED (marks allocated tables in kernel).
+ * dumpkmap saves the value as-is; but attempts
+ * to load it here fail, since it isn't a valid
+ * key value: it is K(KT_SPEC,126) == 2<<8 + 126,
+ * whereas last valid KT_SPEC is
+ * K_BARENUMLOCK == K(KT_SPEC,19).
+ * So far we just ignore these errors:
+ */
+ ioctl(fd, KDSKBENT, &ke);
+ }
+ }
+
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ close(fd);
+ RELEASE_CONFIG_BUFFER(flags);
}
- }
- close (fd);
- return 0;
+ return EXIT_SUCCESS;
}