*
* Copyright (C) 1998 Enrique Zanardi <ezanardi@ull.es>
*
- * 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.
*/
-#include "internal.h"
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <linux/kd.h>
-#include <linux/keyboard.h>
-#include <sys/ioctl.h>
+//usage:#define loadkmap_trivial_usage
+//usage: "< keymap"
+//usage:#define loadkmap_full_usage "\n\n"
+//usage: "Load a binary keyboard translation table from stdin\n"
+/* //usage: "\n -C TTY Affect TTY instead of /dev/tty" */
+//usage:
+//usage:#define loadkmap_example_usage
+//usage: "$ loadkmap < /etc/i18n/lang-keymap\n"
+
+#include "libbb.h"
+#define BINARY_KEYMAP_MAGIC "bkeymap"
-static const char loadkmap_usage[] = "loadkmap\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "Loads a binary keyboard translation table from standard input.\n"
-#endif
- ;
+/* 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)
+int loadkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int loadkmap_main(int argc UNUSED_PARAM, 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];
-
- if (argc>=2 && *argv[1]=='-') {
- usage(loadkmap_usage);
- }
-
- fd = open("/dev/tty0", O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
- exit(FALSE);
- }
+ int i, j, fd;
+ uint16_t ibuff[NR_KEYS];
+/* const char *tty_name = CURRENT_TTY; */
+ RESERVE_CONFIG_BUFFER(flags, MAX_NR_KEYMAPS);
- read(0, buff, 7);
- if (0 != strncmp(buff, magic, 7)) {
- fprintf(stderr, "This is not a valid binary keymap.\n");
- exit(FALSE);
- }
+ /* 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]); */
+ fd = get_console_fd_or_die();
+/* or maybe:
+ opt = getopt32(argv, "C:", &tty_name);
+ fd = xopen_nonblocking(tty_name);
+*/
- if (MAX_NR_KEYMAPS != read(0, flags, MAX_NR_KEYMAPS)) {
- fprintf(stderr, "Error reading keymap flags: %s\n",
- strerror(errno));
- exit(FALSE);
- }
+ xread(STDIN_FILENO, flags, 7);
+ if (strncmp(flags, BINARY_KEYMAP_MAGIC, 7))
+ bb_error_msg_and_die("not a valid binary keymap");
- ibuff = (u_short *) malloc(ibuffsz);
- if (!ibuff) {
- fprintf(stderr, "Out of memory.\n");
- exit(FALSE);
- }
+ xread(STDIN_FILENO, flags, MAX_NR_KEYMAPS);
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));
- exit(FALSE);
- }
- pos += readsz;
- }
+ xread(STDIN_FILENO, ibuff, NR_KEYS * sizeof(uint16_t));
for (j = 0; j < NR_KEYS; j++) {
ke.kb_index = j;
ke.kb_table = i;
}
}
}
- /* Don't bother to close files. Exit does that
- * automagically, so we can save a few bytes */
- /* close(fd); */
- return(TRUE);
+
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ close(fd);
+ RELEASE_CONFIG_BUFFER(flags);
+ }
+ return EXIT_SUCCESS;
}