[BusyBox] rdate.c

[Vladimir N. Oleynik]

Size optimisation and remove small bug for rdate.c in attach.

% size rdate.o rdate_old.o
   text    data     bss     dec     hex filename
    563       0       0     563     233 rdate.o
    616       8       0     624     270 rdate_old.o


--w
vodz
-------------- next part --------------
--- rdate.c~	Sat Mar 10 00:24:12 2001
+++ rdate.c	Sat Mar 17 19:22:40 2001
@@ -33,16 +33,11 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include "busybox.h"
-#define BB_DECLARE_EXTERN
-#include "messages.c"
 
 
 static const int RFC_868_BIAS = 2208988800UL;
 
-static int setdate= 0;
-static int printdate= 0;
-
-static time_t askremotedate(char *host)
+static time_t askremotedate(const char *host)
 {
 	struct hostent *h;
 	struct sockaddr_in sin;
@@ -50,32 +45,25 @@
 	unsigned long int nett, localt;
 	int fd;
 
-	if (!(h = gethostbyname(host))) {	/* get the IP addr */
-		perror_msg("%s", host);
-		return(-1);
-	}
-	if ((tserv = getservbyname("time", "tcp")) == NULL) { /* find port # */
-		perror_msg("%s", "time");
-		return(-1);
-	}
-	if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {  /* get net connection */
-		perror_msg("%s", "socket");
-		return(-1);
-	}
+	if (!(h = gethostbyname(host)))         /* get the IP addr */
+		perror_msg_and_die("%s", host);
+
+	if ((tserv = getservbyname("time", "tcp")) == NULL)   /* find port # */
+		perror_msg_and_die("%s", "time");
+
+	if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)    /* get net connection */
+		perror_msg_and_die("%s", "socket");
 
 	memcpy(&sin.sin_addr, h->h_addr, sizeof(sin.sin_addr));
 	sin.sin_port= tserv->s_port;
 	sin.sin_family = AF_INET;
 
-	if (connect(fd, (struct sockaddr *)&sin, sizeof(sin)) < 0) {	/* connect to time server */
-		perror_msg("%s", host);
-		close(fd);
-		return(-1);
-	}
-	if (read(fd, (void *)&nett, 4) != 4) {	/* read time from server */
-		close(fd);
-		error_msg("%s did not send the complete time", host);
-	}
+	if (connect(fd, (struct sockaddr *)&sin, sizeof(sin)) < 0)      /* connect to time server */
+		perror_msg_and_die("%s", host);
+
+	if (read(fd, (void *)&nett, 4) != 4)    /* read time from server */
+		error_msg_and_die("%s did not send the complete time", host);
+
 	close(fd);
 
 	/* convert from network byte order to local byte order.
@@ -93,6 +81,8 @@
 {
 	time_t time;
 	int opt;
+	int setdate = 0;
+	int printdate= 0;
 
 	/* Interpret command line args */
 	/* do special-case option parsing */
@@ -118,20 +108,18 @@
 	/* the default action is to set the date */
 	if (printdate==0 && setdate==0) setdate++;
 
-	if (optind == argc) {
+	if (optind == argc)
 		show_usage();
-	}
 
-	if ((time= askremotedate(argv[optind])) == (time_t)-1) {
-		return EXIT_FAILURE;
-	}
+	time = askremotedate(argv[optind]);
+
 	if (setdate) {
 		if (stime(&time) < 0)
 			perror_msg_and_die("Could not set time of day");
 	}
-	if (printdate) {
+
+	if (printdate)
 		printf("%s", ctime(&time));
-	}
 
 	return EXIT_SUCCESS;
 }