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commit d5dd6189d506068ed11c8bfa1e1e9bffde04decd
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Author: Andreas Schwab <schwab@suse.de>
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Date:   Mon Jan 21 17:41:28 2013 +0100
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    Fix parsing of numeric hosts in gethostbyname_r
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diff --git glibc-2.17-c758a686/nss/Makefile glibc-2.17-c758a686/nss/Makefile
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index 449a258..553eafa 100644
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--- glibc-2.17-c758a686/nss/Makefile
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+++ glibc-2.17-c758a686/nss/Makefile
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@@ -37,7 +37,8 @@ install-bin             := getent makedb
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 makedb-modules = xmalloc hash-string
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 extra-objs		+= $(makedb-modules:=.o)
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-tests			= test-netdb tst-nss-test1 bug17079 tst-nss-getpwent
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+tests			= test-netdb tst-nss-test1 bug17079 tst-nss-getpwent \
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+			 test-digits-dots
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 xtests			= bug-erange
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 include ../Makeconfig
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diff --git glibc-2.17-c758a686/nss/digits_dots.c glibc-2.17-c758a686/nss/digits_dots.c
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index 2b86295..e007ef4 100644
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--- glibc-2.17-c758a686/nss/digits_dots.c
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+++ glibc-2.17-c758a686/nss/digits_dots.c
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@@ -46,7 +46,10 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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     {
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       if (h_errnop)
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 	*h_errnop = NETDB_INTERNAL;
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-      *result = NULL;
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+      if (buffer_size == NULL)
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+	*status = NSS_STATUS_TRYAGAIN;
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+      else
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+	*result = NULL;
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       return -1;
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     }
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@@ -83,14 +86,16 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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 	}
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       size_needed = (sizeof (*host_addr)
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-		     + sizeof (*h_addr_ptrs) + strlen (name) + 1);
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+		     + sizeof (*h_addr_ptrs)
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+		     + sizeof (*h_alias_ptr) + strlen (name) + 1);
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       if (buffer_size == NULL)
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         {
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 	  if (buflen < size_needed)
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 	    {
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+	      *status = NSS_STATUS_TRYAGAIN;
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 	      if (h_errnop != NULL)
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-		*h_errnop = TRY_AGAIN;
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+		*h_errnop = NETDB_INTERNAL;
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 	      __set_errno (ERANGE);
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 	      goto done;
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 	    }
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@@ -109,7 +114,7 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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 	      *buffer_size = 0;
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 	      __set_errno (save);
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 	      if (h_errnop != NULL)
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-		*h_errnop = TRY_AGAIN;
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+		*h_errnop = NETDB_INTERNAL;
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 	      *result = NULL;
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 	      goto done;
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 	    }
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@@ -149,7 +154,9 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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 		  if (! ok)
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 		    {
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 		      *h_errnop = HOST_NOT_FOUND;
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-		      if (buffer_size)
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+		      if (buffer_size == NULL)
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+			*status = NSS_STATUS_NOTFOUND;
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+		      else
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 			*result = NULL;
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 		      goto done;
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 		    }
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@@ -190,7 +197,7 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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 		  if (buffer_size == NULL)
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 		    *status = NSS_STATUS_SUCCESS;
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 		  else
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-		   *result = resbuf;
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+		    *result = resbuf;
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 		  goto done;
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 		}
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@@ -201,15 +208,6 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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       if ((isxdigit (name[0]) && strchr (name, ':') != NULL) || name[0] == ':')
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 	{
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-	  const char *cp;
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-	  char *hostname;
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-	  typedef unsigned char host_addr_t[16];
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-	  host_addr_t *host_addr;
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-	  typedef char *host_addr_list_t[2];
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-	  host_addr_list_t *h_addr_ptrs;
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-	  size_t size_needed;
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-	  int addr_size;
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-
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 	  switch (af)
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 	    {
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 	    default:
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@@ -225,7 +223,10 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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 	      /* This is not possible.  We cannot represent an IPv6 address
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 		 in an `struct in_addr' variable.  */
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 	      *h_errnop = HOST_NOT_FOUND;
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-	      *result = NULL;
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+	      if (buffer_size == NULL)
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+		*status = NSS_STATUS_NOTFOUND;
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+	      else
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+		*result = NULL;
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 	      goto done;
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 	    case AF_INET6:
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@@ -233,42 +234,6 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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 	      break;
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 	    }
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-	  size_needed = (sizeof (*host_addr)
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-			 + sizeof (*h_addr_ptrs) + strlen (name) + 1);
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-
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-	  if (buffer_size == NULL && buflen < size_needed)
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-	    {
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-	      if (h_errnop != NULL)
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-		*h_errnop = TRY_AGAIN;
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-	      __set_errno (ERANGE);
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-	      goto done;
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-	    }
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-	  else if (buffer_size != NULL && *buffer_size < size_needed)
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-	    {
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-	      char *new_buf;
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-	      *buffer_size = size_needed;
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-	      new_buf = realloc (*buffer, *buffer_size);
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-
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-	      if (new_buf == NULL)
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-		{
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-		  save = errno;
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-		  free (*buffer);
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-		  __set_errno (save);
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-		  *buffer = NULL;
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-		  *buffer_size = 0;
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-		  *result = NULL;
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-		  goto done;
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-		}
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-	      *buffer = new_buf;
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-	    }
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-
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-	  memset (*buffer, '\0', size_needed);
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-
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-	  host_addr = (host_addr_t *) *buffer;
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-	  h_addr_ptrs = (host_addr_list_t *)
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-	    ((char *) host_addr + sizeof (*host_addr));
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-	  hostname = (char *) h_addr_ptrs + sizeof (*h_addr_ptrs);
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-
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 	  for (cp = name;; ++cp)
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 	    {
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 	      if (!*cp)
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@@ -281,7 +246,9 @@ __nss_hostname_digits_dots (const char *name, struct hostent *resbuf,
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 		  if (inet_pton (AF_INET6, name, host_addr) <= 0)
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 		    {
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 		      *h_errnop = HOST_NOT_FOUND;
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-		      if (buffer_size)
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+		      if (buffer_size == NULL)
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+			*status = NSS_STATUS_NOTFOUND;
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+		      else
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 			*result = NULL;
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 		      goto done;
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 		    }
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diff --git glibc-2.17-c758a686/nss/getXXbyYY_r.c glibc-2.17-c758a686/nss/getXXbyYY_r.c
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index 1067744..44d00f4 100644
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--- glibc-2.17-c758a686/nss/getXXbyYY_r.c
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+++ glibc-2.17-c758a686/nss/getXXbyYY_r.c
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@@ -179,6 +179,9 @@ INTERNAL (REENTRANT_NAME) (ADD_PARAMS, LOOKUP_TYPE *resbuf, char *buffer,
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     case -1:
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       return errno;
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     case 1:
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+#ifdef NEED_H_ERRNO
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+      any_service = true;
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+#endif
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       goto done;
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     }
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 #endif
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@@ -288,7 +291,7 @@ done:
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     /* This happens when we weren't able to use a service for reasons other
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        than the module not being found.  In such a case, we'd want to tell the
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        caller that errno has the real reason for failure.  */
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-      *h_errnop = NETDB_INTERNAL;
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+    *h_errnop = NETDB_INTERNAL;
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   else if (status != NSS_STATUS_SUCCESS && !any_service)
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     /* We were not able to use any service.  */
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     *h_errnop = NO_RECOVERY;
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diff --git glibc-2.17-c758a686/nss/test-digits-dots.c glibc-2.17-c758a686/nss/test-digits-dots.c
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new file mode 100644
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index 0000000..1efa344
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--- /dev/null
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+++ glibc-2.17-c758a686/nss/test-digits-dots.c
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@@ -0,0 +1,38 @@
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+/* Copyright (C) 2013 Free Software Foundation, Inc.
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+   This file is part of the GNU C Library.
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+
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+   The GNU C Library is free software; you can redistribute it and/or
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+   modify it under the terms of the GNU Lesser General Public
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+   License as published by the Free Software Foundation; either
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+   version 2.1 of the License, or (at your option) any later version.
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+
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+   The GNU C Library is distributed in the hope that it will be useful,
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+   but WITHOUT ANY WARRANTY; without even the implied warranty of
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+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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+   Lesser General Public License for more details.
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+
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+   You should have received a copy of the GNU Lesser General Public
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+   License along with the GNU C Library; if not, see
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+   <http://www.gnu.org/licenses/>.  */
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+
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+/* Testcase for BZ #15014 */
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+
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+#include <stdlib.h>
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+#include <netdb.h>
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+#include <errno.h>
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+
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+static int
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+do_test (void)
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+{
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+  char buf[32];
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+  struct hostent *result = NULL;
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+  struct hostent ret;
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+  int h_err = 0;
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+  int err;
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+
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+  err = gethostbyname_r ("1.2.3.4", &ret, buf, sizeof (buf), &result, &h_err);
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+  return err == ERANGE && h_err == NETDB_INTERNAL ? EXIT_SUCCESS : EXIT_FAILURE;
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+}
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+
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+#define TEST_FUNCTION do_test ()
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+#include "../test-skeleton.c"