aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/posix
diff options
context:
space:
mode:
authorSiddhesh Poyarekar <siddhesh@redhat.com>2013-05-21 21:54:41 +0530
committerSiddhesh Poyarekar <siddhesh@redhat.com>2013-05-21 21:54:41 +0530
commit3d04f5db20c8f0d1ba3881b5f5373586a18cf188 (patch)
tree9f49a788186914f0061f340e938ad21d293f7762 /sysdeps/posix
parentd5dd6189d506068ed11c8bfa1e1e9bffde04decd (diff)
downloadglibc-3d04f5db20c8f0d1ba3881b5f5373586a18cf188.zip
glibc-3d04f5db20c8f0d1ba3881b5f5373586a18cf188.tar.gz
glibc-3d04f5db20c8f0d1ba3881b5f5373586a18cf188.tar.bz2
Set EAI_SYSTEM only when h_errno is NETDB_INTERNAL
Fixes BZ #15339. NSS_STATUS_UNAVAIL may mean that a necessary input resource is not available. This could occur in a number of cases including when the network is down, system runs out of file descriptors, etc. The correct differentiator in such a case is the h_errno, which gives the nature of failure. In case of failures other than a simple 'not found', we set h_errno as NETDB_INTERNAL and let errno be the identifier for the exact error.
Diffstat (limited to 'sysdeps/posix')
-rw-r--r--sysdeps/posix/getaddrinfo.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index ab135ad..7bb3ded 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -1036,7 +1036,15 @@ gaih_inet (const char *name, const struct gaih_service *service,
}
}
else
- status = NSS_STATUS_UNAVAIL;
+ {
+ status = NSS_STATUS_UNAVAIL;
+ /* Could not load any of the lookup functions. Indicate
+ an internal error if the failure was due to a system
+ error other than the file not being found. We use the
+ errno from the last failed callback. */
+ if (errno != 0 && errno != ENOENT)
+ __set_h_errno (NETDB_INTERNAL);
+ }
}
if (nss_next_action (nip, status) == NSS_ACTION_RETURN)
@@ -1050,7 +1058,7 @@ gaih_inet (const char *name, const struct gaih_service *service,
_res.options |= old_res_options & RES_USE_INET6;
- if (status == NSS_STATUS_UNAVAIL)
+ if (h_errno == NETDB_INTERNAL)
{
result = GAIH_OKIFUNSPEC | -EAI_SYSTEM;
goto free_and_return;