X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fnetwork%2Fgethostbyaddr.c;h=598e2241a9f808e8ecafb72e24d7d6959cb49a28;hb=96315d27b0e5000d53e09fb915c5066b3d47d3d2;hp=51e1c5699856be573a3e45e288af2689772e07be;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/network/gethostbyaddr.c b/src/network/gethostbyaddr.c
index 51e1c569..598e2241 100644
--- a/src/network/gethostbyaddr.c
+++ b/src/network/gethostbyaddr.c
@@ -1,15 +1,24 @@
 #define _GNU_SOURCE
 
 #include <netdb.h>
-#include <string.h>
-#include <netinet/in.h>
+#include <errno.h>
+#include <stdlib.h>
 
 struct hostent *gethostbyaddr(const void *a, socklen_t l, int af)
 {
-	static struct hostent h;
-	static long buf[512/sizeof(long)];
+	static struct hostent *h;
+	size_t size = 63;
 	struct hostent *res;
-	if (gethostbyaddr_r(a, l, af, &h,
-		(void *)buf, sizeof buf, &res, &h_errno)) return 0;
-	return &h;
+	int err;
+	do {
+		free(h);
+		h = malloc(size+=size+1);
+		if (!h) {
+			h_errno = NO_RECOVERY;
+			return 0;
+		}
+		err = gethostbyaddr_r(a, l, af, h,
+			(void *)(h+1), size-sizeof *h, &res, &h_errno);
+	} while (err == ERANGE);
+	return err ? 0 : h;
 }