bbconfig: make it independent from printf functions

[platform/upstream/busybox.git] / console-tools / dumpkmap.c

diff --git a/console-tools/dumpkmap.c b/console-tools/dumpkmap.c
index 0897b32..a03b593 100644 (file)
--- a/console-tools/dumpkmap.c
+++ b/console-tools/dumpkmap.c
@@ -4,30 +4,12 @@
  *
  * Copyright (C) Arne Bernin <arne@matrix.loopback.org>
  *
- * 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 tarball for details.
  *
  */
+/* no options, no getopt */
 
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/ioctl.h>
-#include "busybox.h"
+#include "libbb.h"
 
 /* From <linux/kd.h> */
 struct kbentry {
@@ -35,58 +17,58 @@ struct kbentry {
        unsigned char kb_index;
        unsigned short kb_value;
 };
-static const int KDGKBENT = 0x4B46;  /* gets one entry in translation table */
+#define KDGKBENT 0x4B46  /* gets one entry in translation table */
 
 /* From <linux/keyboard.h> */
-static const int NR_KEYS = 128;
-static const int MAX_NR_KEYMAPS = 256;
+#define NR_KEYS 128
+#define MAX_NR_KEYMAPS 256
 
-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], magic[] = "bkeymap";
+       RESERVE_CONFIG_BUFFER(flags, MAX_NR_KEYMAPS);
 
-       if (argc >= 2 && *argv[1] == '-')
+       /* 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 = bb_xopen(CURRENT_VC, O_RDWR);
+       fd = get_console_fd_or_die();
 
-       write(1, magic, 7);
+       write(STDOUT_FILENO, "bkeymap", 7);
 
-       for (i=0; i < MAX_NR_KEYMAPS; i++)
-               flags[i] = 0;
-       flags[0] = 1;
-       flags[1] = 1;
-       flags[2] = 1;
-       flags[4] = 1;
-       flags[5] = 1;
-       flags[6] = 1;
-       flags[8] = 1;
-       flags[9] = 1;
-       flags[10] = 1;
-       flags[12] = 1;
+       /* Here we want to set everything to 0 except for indexes:
+        * [0-2] [4-6] [8-10] [12] */
+       memset(flags, 0x00, MAX_NR_KEYMAPS);
+       memset(flags, 0x01, 13);
+       flags[3] = flags[7] = flags[11] = 0;
 
        /* dump flags */
-       for (i = 0; i < MAX_NR_KEYMAPS; i++)
-               write(1, &flags[i], 1);
+       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_error_msg("ioctl returned: %m, %s, %s, %xqq",
+                               if (!ioctl_or_perror(fd, KDGKBENT, &ke,
+                                               "ioctl failed with %s, %s, %p",
                                                (char *)&ke.kb_index,
                                                (char *)&ke.kb_table,
-                                               (int)&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;
 }