busybox: 1.18.2 fixes for ping, tar and udhcp

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/busybox/busybox-1.18.2/busybox-1.18.2-ping.patch

@@ -0,0 +1,11 @@
+--- busybox-1.18.2/networking/ping.c
++++ busybox-1.18.2-ping/networking/ping.c
+@@ -394,7 +394,7 @@ static void sendping4(int junk UNUSED_PA
+ #if ENABLE_PING6
+ static void sendping6(int junk UNUSED_PARAM)
+ {
+-	struct icmp6_hdr *pkt = alloca(datalen + sizeof(struct icmp6_hdr) + 4);
++	struct icmp6_hdr *pkt = G.snd_packet;
+ 
+ 	//memset(pkt, 0, datalen + sizeof(struct icmp6_hdr) + 4);
+ 	pkt->icmp6_type = ICMP6_ECHO_REQUEST;

package/busybox/busybox-1.18.2/busybox-1.18.2-tar.patch

@@ -0,0 +1,15 @@
+--- busybox-1.18.2/archival/tar.c
++++ busybox-1.18.2-tar/archival/tar.c
+@@ -1037,8 +1037,10 @@ int tar_main(int argc UNUSED_PARAM, char
+ 			tar_handle->src_fd = tar_fd;
+ 			tar_handle->seek = seek_by_read;
+ 		} else {
+-			if (ENABLE_FEATURE_TAR_AUTODETECT && flags == O_RDONLY) {
+-				get_header_ptr = get_header_tar;
++			if (ENABLE_FEATURE_TAR_AUTODETECT
++			 && flags == O_RDONLY
++			 && get_header_ptr == get_header_tar
++			) {
+ 				tar_handle->src_fd = open_zipped(tar_filename);
+ 				if (tar_handle->src_fd < 0)
+ 					bb_perror_msg_and_die("can't open '%s'", tar_filename);

package/busybox/busybox-1.18.2/busybox-1.18.2-udhcp.patch

@@ -0,0 +1,11 @@
+--- busybox-1.18.2/networking/udhcp/common.c
++++ busybox-1.18.2-udhcp/networking/udhcp/common.c
+@@ -375,7 +375,7 @@ static NOINLINE void attach_option(
+ 		new->data = xmalloc(length + OPT_DATA);
+ 		new->data[OPT_CODE] = optflag->code;
+ 		new->data[OPT_LEN] = length;
+-		memcpy(new->data + OPT_DATA, buffer, length);
++		memcpy(new->data + OPT_DATA, (allocated ? allocated : buffer), length);
+ 
+ 		curr = opt_list;
+ 		while (*curr && (*curr)->data[OPT_CODE] < optflag->code)