Fix spurious errors from kcmio_unix_socket_write

Resolves: #1645912

Fix-spurious-errors-from-kcmio_unix_socket_write.patch

@@ -0,0 +1,44 @@
+From 9fb4942026ba77ae51a9fa3623c62a07328e3bd5 Mon Sep 17 00:00:00 2001
+From: Robbie Harwood <rharwood@redhat.com>
+Date: Mon, 5 Nov 2018 13:49:52 -0500
+Subject: [PATCH] Fix spurious errors from kcmio_unix_socket_write
+
+Commit 33634a940166d0b21c3105bab8dcf5550fbbd678 accidentally changed
+the return value from kcmio_unix_socket_write to be the result of the
+write call.  Most commonly this resulted in it returning 8, which led
+to many commands failing with "Exec format error".
+
+ticket: 8758 (new)
+tags: pullup
+target_version: 1.17-next
+
+(cherry picked from commit 3e76ea104cdaf22c4537833b203f8aeed1691f18)
+---
+ src/lib/krb5/ccache/cc_kcm.c | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/src/lib/krb5/ccache/cc_kcm.c b/src/lib/krb5/ccache/cc_kcm.c
+index 2b9f82e32..092ab7daf 100644
+--- a/src/lib/krb5/ccache/cc_kcm.c
++++ b/src/lib/krb5/ccache/cc_kcm.c
+@@ -308,8 +308,9 @@ kcmio_unix_socket_write(krb5_context context, struct kcmio *io, void *request,
+ 
+     for (;;) {
+         ret = krb5int_net_writev(context, io->fd, sg, 2);
+-        if (ret < 0)
+-            ret = errno;
++        if (ret >= 0)
++            return 0;
++        ret = errno;
+         if (ret != EPIPE || reconnected)
+             return ret;
+ 
+@@ -327,8 +328,6 @@ kcmio_unix_socket_write(krb5_context context, struct kcmio *io, void *request,
+             return ret;
+         reconnected = TRUE;
+     }
+-
+-    return ret;
+ }
+ 
+ /* Read a KCM reply: 4-byte big-endian length, 4-byte big-endian status code,

krb5.spec

@@ -18,7 +18,7 @@ Summary: The Kerberos network authentication system
 Name: krb5
 Version: 1.17
 # for prerelease, should be e.g., 0.% {prerelease}.1% { ?dist } (without spaces)
-Release: 0.beta1.1%{?dist}
+Release: 1.beta1.1%{?dist}
 
 # lookaside-cached sources; two downloads and a build artifact
 Source0: https://web.mit.edu/kerberos/dist/krb5/1.16/krb5-%{version}%{prerelease}.tar.gz
@@ -61,6 +61,7 @@ Patch34: krb5-1.9-debuginfo.patch
 Patch35: krb5-1.11-run_user_0.patch
 Patch36: krb5-1.11-kpasswdtest.patch
 Patch86: In-FIPS-mode-add-plaintext-fallback-for-RC4-usages-a.patch
+Patch87: Fix-spurious-errors-from-kcmio_unix_socket_write.patch
 
 License: MIT
 URL: http://web.mit.edu/kerberos/www/
@@ -708,6 +709,10 @@ exit 0
 %{_libdir}/libkadm5srv_mit.so.*
 
 %changelog
+* Thu Nov 08 2018 Robbie Harwood <rharwood@redhat.com> - 1.17-1
+- Fix spurious errors from kcmio_unix_socket_write
+- Resolves: #1645912
+
 * Thu Nov 01 2018 Robbie Harwood <rharwood@redhat.com> - 1.17-0.beta2.1
 - New upstream beta release