resolv: Report allocation errors in __res_vinit

2 files changed, 25 insertions, 5 deletions

diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
index f121aa3de7..206924de86 100644
--- a/resolv/nss_dns/dns-host.c
+++ b/resolv/nss_dns/dns-host.c
@@ -164,7 +164,11 @@ _nss_dns_gethostbyname3_r (const char *name, int af, struct hostent *result,
   enum nss_status status;
 
   if (__res_maybe_init (&_res, 0) == -1)
-    return NSS_STATUS_UNAVAIL;
+    {
+      *errnop = errno;
+      *h_errnop = NETDB_INTERNAL;
+      return NSS_STATUS_UNAVAIL;
+    }
 
   switch (af) {
   case AF_INET:
@@ -289,7 +293,11 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
 			   int *herrnop, int32_t *ttlp)
 {
   if (__res_maybe_init (&_res, 0) == -1)
-    return NSS_STATUS_UNAVAIL;
+    {
+      *errnop = errno;
+      *herrnop = NETDB_INTERNAL;
+      return NSS_STATUS_UNAVAIL;
+    }
 
   /*
    * if there aren't any dots, it could be a user-level alias.
@@ -416,7 +424,11 @@ _nss_dns_gethostbyaddr2_r (const void *addr, socklen_t len, int af,
  host_data = (struct host_data *) buffer;
 
   if (__res_maybe_init (&_res, 0) == -1)
-    return NSS_STATUS_UNAVAIL;
+    {
+      *errnop = errno;
+      *h_errnop = NETDB_INTERNAL;
+      return NSS_STATUS_UNAVAIL;
+    }
 
   if (af == AF_INET6 && len == IN6ADDRSZ
       && (memcmp (uaddr, mapped, sizeof mapped) == 0
diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c
index 2be72d33a3..dc1599b471 100644
--- a/resolv/nss_dns/dns-network.c
+++ b/resolv/nss_dns/dns-network.c
@@ -116,7 +116,11 @@ _nss_dns_getnetbyname_r (const char *name, struct netent *result,
   enum nss_status status;
 
   if (__res_maybe_init (&_res, 0) == -1)
-    return NSS_STATUS_UNAVAIL;
+    {
+      *errnop = errno;
+      *herrnop = NETDB_INTERNAL;
+      return NSS_STATUS_UNAVAIL;
+    }
 
   net_buffer.buf = orig_net_buffer = (querybuf *) alloca (1024);
 
@@ -166,7 +170,11 @@ _nss_dns_getnetbyaddr_r (uint32_t net, int type, struct netent *result,
     return NSS_STATUS_UNAVAIL;
 
   if (__res_maybe_init (&_res, 0) == -1)
-    return NSS_STATUS_UNAVAIL;
+    {
+      *errnop = errno;
+      *herrnop = NETDB_INTERNAL;
+      return NSS_STATUS_UNAVAIL;
+    }
 
   net2 = (u_int32_t) net;
   for (cnt = 4; net2 != 0; net2 >>= 8)