X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=loadkmap.c;h=dcb5c1caa1ef2e4b6b3772018df441d1fe948fbb;hb=3a6da8c183142a2681a2382b63e970f457cf807b;hp=27865d58e8e2a2cbec7ca19ee68445238645d223;hpb=e77ae3a2c0328590b43447550bdb1284650b8236;p=oweals%2Fbusybox.git

diff --git a/loadkmap.c b/loadkmap.c
index 27865d58e..dcb5c1caa 100644
--- a/loadkmap.c
+++ b/loadkmap.c
@@ -1,68 +1,89 @@
-#include "internal.h"
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini loadkmap implementation for busybox
+ *
+ * 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
+ *
+ */
+
 #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"
+
+/* 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;
 
-static const char loadkmap_usage[] = "loadkmap\n"
-"\n"
-"\tLoad a binary keyboard translation table from standard input.\n"
-"\n";
+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], buff[7];
 
+	if (argc != 1)
+		show_usage();
 
-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];
+	fd = open("/dev/tty0", O_RDWR);
+	if (fd < 0)
+		perror_msg_and_die("Error opening /dev/tty0");
 
-    fd = open("/dev/tty0", O_RDWR);
-    if (fd < 0) {
-	fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
-	return 1;
-    }
+	read(0, buff, 7);
+	if (0 != strncmp(buff, BINARY_KEYMAP_MAGIC, 7))
+		error_msg_and_die("This is not a valid binary keymap.");
 
-    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;
-    }
+	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;
-	        }
-		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);
-	    }
+	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)
+					perror_msg_and_die("Error reading keymap");
+				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);
+			}
+		}
 	}
-    }
-    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;
 }