File busybox-1.15.2-ping.patch of Package busybox

File busybox-1.15.2-ping.patch of Package busybox (Revision d2af3a229ffbe9f56ebbd44e85820d1b)

Currently displaying revision d2af3a229ffbe9f56ebbd44e85820d1b, show latest

diff -urpN busybox-1.15.2/include/platform.h busybox-1.15.2-ping/include/platform.h
--- busybox-1.15.2/include/platform.h	2009-09-26 15:14:57.000000000 +0200
+++ busybox-1.15.2-ping/include/platform.h	2009-11-28 23:48:41.000000000 +0100
@@ -174,12 +174,14 @@ char *strchrnul(const char *s, int c);
  * a lvalue. This makes it more likely to not swap them by mistake
  */
 #if defined(i386) || defined(__x86_64__)
+# define move_from_unaligned_int(v, intp) ((v) = *(int*)(intp))
 # define move_from_unaligned16(v, u16p) ((v) = *(uint16_t*)(u16p))
 # define move_from_unaligned32(v, u32p) ((v) = *(uint32_t*)(u32p))
 # define move_to_unaligned32(u32p, v)   (*(uint32_t*)(u32p) = (v))
 /* #elif ... - add your favorite arch today! */
 #else
 /* performs reasonably well (gcc usually inlines memcpy here) */
+# define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
 # define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
 # define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
 # define move_to_unaligned32(u32p, v) do { \
diff -urpN busybox-1.15.2/networking/ping.c busybox-1.15.2-ping/networking/ping.c
--- busybox-1.15.2/networking/ping.c	2009-09-26 15:14:57.000000000 +0200
+++ busybox-1.15.2-ping/networking/ping.c	2009-11-28 23:48:41.000000000 +0100
@@ -173,13 +173,14 @@ static void ping6(len_and_sockaddr *lsa)
 }
 #endif
 
-int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ping_main(int argc UNUSED_PARAM, char **argv)
+#if !ENABLE_PING6
+# define common_ping_main(af, argv) common_ping_main(argv)
+#endif
+static int common_ping_main(sa_family_t af, char **argv)
 {
 	len_and_sockaddr *lsa;
-#if ENABLE_PING6
-	sa_family_t af = AF_UNSPEC;
 
+#if ENABLE_PING6
 	while ((++argv)[0] && argv[0][0] == '-') {
 		if (argv[0][1] == '4') {
 			af = AF_INET;
@@ -689,7 +690,8 @@ static void ping6(len_and_sockaddr *lsa)
 			 /* don't check len - we trust the kernel: */
 			 /* && mp->cmsg_len >= CMSG_LEN(sizeof(int)) */
 			) {
-				hoplimit = *(int*)CMSG_DATA(mp);
+				/*hoplimit = *(int*)CMSG_DATA(mp); - unaligned access */
+				move_from_unaligned_int(hoplimit, CMSG_DATA(mp));
 			}
 		}
 		unpack6(packet, c, /*&from,*/ hoplimit);
@@ -716,18 +718,16 @@ static void ping(len_and_sockaddr *lsa)
 		ping4(lsa);
 }
 
-int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ping_main(int argc UNUSED_PARAM, char **argv)
+static int common_ping_main(int opt, char **argv)
 {
 	len_and_sockaddr *lsa;
 	char *str_s;
-	int opt;
 
 	INIT_G();
 
 	/* exactly one argument needed; -v and -q don't mix; -c NUM, -w NUM, -W NUM */
 	opt_complementary = "=1:q--v:v--q:c+:w+:W+";
-	opt = getopt32(argv, OPT_STRING, &pingcount, &str_s, &deadline, &timeout, &str_I);
+	opt |= getopt32(argv, OPT_STRING, &pingcount, &str_s, &deadline, &timeout, &str_I);
 	if (opt & OPT_s)
 		datalen = xatou16(str_s); // -s
 	if (opt & OPT_I) { // -I
@@ -765,13 +765,25 @@ int ping_main(int argc UNUSED_PARAM, cha
 #endif /* FEATURE_FANCY_PING */
 
 
+int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int ping_main(int argc UNUSED_PARAM, char **argv)
+{
+#if !ENABLE_FEATURE_FANCY_PING
+	return common_ping_main(AF_UNSPEC, argv);
+#else
+	return common_ping_main(0, argv);
+#endif
+}
+
 #if ENABLE_PING6
 int ping6_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int ping6_main(int argc UNUSED_PARAM, char **argv)
 {
-	argv[0] = (char*)"-6";
-	return ping_main(0 /* argc+1 - but it's unused anyway */,
-			argv - 1);
+# if !ENABLE_FEATURE_FANCY_PING
+	return common_ping_main(AF_INET6, argv);
+# else
+	return common_ping_main(OPT_IPV6, argv);
+# endif
 }
 #endif