getaddrinfo: In gaih_inet, use h_errno for certain status values only
Commit Message
h_errno is not set for NSS_STATUS_SUCCESS, so its value might not be
accurate at this point.
2017-08-08 Florian Weimer <fweimer@redhat.com>
* sysdeps/posix/getaddrinfo.c (gaih_inet): Only use h_errno if
status indicates it is set.
@@ -949,7 +949,10 @@ gaih_inet (const char *name, const struct gaih_service *service,
__resolv_context_enable_inet6 (res_ctx, res_enable_inet6);
__resolv_context_put (res_ctx);
- if (h_errno == NETDB_INTERNAL)
+ /* If we have a failure which sets errno, report it using
+ EAI_SYSTEM. */
+ if ((status == NSS_STATUS_TRYAGAIN || status == NSS_STATUS_UNAVAIL)
+ && h_errno == NETDB_INTERNAL)
{
result = -EAI_SYSTEM;
goto free_and_return;