57 lines
2.0 KiB
Diff
57 lines
2.0 KiB
Diff
From 8f46c6052408a23a77ecf46aa378120c1a4afe37 Mon Sep 17 00:00:00 2001
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From: Florian Weimer <fweimer@redhat.com>
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Date: Fri, 1 Sep 2017 08:57:28 +0200
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Subject: [PATCH 24] getaddrinfo: Properly set errno for NSS function lookup
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failure
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(cherry picked from commit ad816a5e00ce891a2cea8187638fa0e00f83aaf6)
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---
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ChangeLog | 5 +++++
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sysdeps/posix/getaddrinfo.c | 16 ++++++++++------
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2 files changed, 15 insertions(+), 6 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index d53c8fe083..2f959d4c36 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,5 +1,10 @@
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2017-09-01 Florian Weimer <fweimer@redhat.com>
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+ * sysdeps/posix/getaddrinfo.c (gaih_inet): Make reporting of NSS
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+ function lookup failures more reliable.
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+
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+2017-09-01 Florian Weimer <fweimer@redhat.com>
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+
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* sysdeps/posix/getaddrinfo.c (gethosts): Use h_errno directly.
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(getcanonname): Likewise.
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(gaih_inet): Likewise.
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diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
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index 076e1fa62b..eaf8bafcf4 100644
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--- a/sysdeps/posix/getaddrinfo.c
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+++ b/sysdeps/posix/getaddrinfo.c
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@@ -923,13 +923,17 @@ gaih_inet (const char *name, const struct gaih_service *service,
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}
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else
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{
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+ /* Could not locate any of the lookup functions.
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+ The NSS lookup code does not consistently set
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+ errno, so we need to supply our own error
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+ code here. The root cause could either be a
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+ resource allocation failure, or a missing
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+ service function in the DSO (so it should not
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+ be listed in /etc/nsswitch.conf). Assume the
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+ former, and return EBUSY. */
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status = NSS_STATUS_UNAVAIL;
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- /* Could not load any of the lookup functions. Indicate
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- an internal error if the failure was due to a system
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- error other than the file not being found. We use the
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- errno from the last failed callback. */
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- if (errno != 0 && errno != ENOENT)
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- __set_h_errno (NETDB_INTERNAL);
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+ __set_h_errno (NETDB_INTERNAL);
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+ __set_errno (EBUSY);
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}
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}
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