X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=loadkmap.c;h=dcb5c1caa1ef2e4b6b3772018df441d1fe948fbb;hb=3a6da8c183142a2681a2382b63e970f457cf807b;hp=99efc510179a1dfa9d8641b2370955e1cb350899;hpb=7ab9c7ee52db8759d457819f5480378fa3aa97cc;p=oweals%2Fbusybox.git

diff --git a/loadkmap.c b/loadkmap.c
index 99efc5101..dcb5c1caa 100644
--- a/loadkmap.c
+++ b/loadkmap.c
@@ -20,67 +20,58 @@
  *
  */
 
-#include "internal.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>
+#include "busybox.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;
+};
+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>=2 && *argv[1]=='-') {
-		usage(loadkmap_usage);
-	}
+	if (argc != 1)
+		show_usage();
 
 	fd = open("/dev/tty0", O_RDWR);
-	if (fd < 0) {
-		fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
-		exit(FALSE);
-	}
+	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");
-		exit(FALSE);
-	}
+	if (0 != strncmp(buff, BINARY_KEYMAP_MAGIC, 7))
+		error_msg_and_die("This is not a valid binary keymap.");
 
-	if (MAX_NR_KEYMAPS != read(0, flags, MAX_NR_KEYMAPS)) {
-		fprintf(stderr, "Error reading keymap flags: %s\n",
-				strerror(errno));
-		exit(FALSE);
-	}
+	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");
-		exit(FALSE);
-	}
+	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));
-					exit(FALSE);
-				}
+				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++) {
@@ -94,5 +85,5 @@ int loadkmap_main(int argc, char **argv)
 	/* Don't bother to close files.  Exit does that 
 	 * automagically, so we can save a few bytes */
 	/* close(fd); */
-	exit(TRUE);
+	return EXIT_SUCCESS;
 }