* [2.26 COMMITTED] getaddrinfo: In gaih_inet, use h_errno for certain status values only
@ 2017-01-01 0:00 Florian Weimer
0 siblings, 0 replies; only message in thread
From: Florian Weimer @ 2017-01-01 0:00 UTC (permalink / raw)
To: libc-stable
h_errno is not set for NSS_STATUS_SUCCESS, so its value might not be
accurate at this point.
(cherry picked from commit a2881ef01450295782b065f2f850f340d5c12c14)
2017-09-01 Florian Weimer <fweimer@redhat.com>
* sysdeps/posix/getaddrinfo.c (gaih_inet): Only use h_errno if
status indicates it is set.
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index eaf8bafcf4..9d9e7e2bf2 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -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;
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