[mariadb] Script for socket check enhanced

[Honza Horak]

commit f2056aa95043fd5eb5cae26feab103f8e8c455a8
Author: Honza Horak <hhorak at redhat.com>
Date:   Mon May 5 12:36:12 2014 +0200

    Script for socket check enhanced

 mariadb-check-socket |   29 ++++++++++++++++++++++++++---
 mariadb.spec         |    5 ++++-
 2 files changed, 30 insertions(+), 4 deletions(-)
---
diff --git a/mariadb-check-socket b/mariadb-check-socket
index 90e835b..955dc4f 100644
--- a/mariadb-check-socket
+++ b/mariadb-check-socket
@@ -7,10 +7,33 @@
 
 source "`dirname ${BASH_SOURCE[0]}`/mariadb-scripts-common"
 
-if fuser "$socketfile" &>/dev/null ; then
+if test -e "$socketfile" ; then
     echo "Socket file $socketfile exists." >&2
-    echo "Is another MySQL daemon running with the same unix socket?" >&2
-    exit 1
+
+    # no write permissions
+    if ! test -w "$socketfile" ; then
+        echo "Not enough permission to write to the socket file $socketfile, which is suspicious." >&2
+        echo "Please, remove $socketfile manually to start the service." >&2
+        exit 1
+    fi
+
+    # not a socket file
+    if ! test -S "$socketfile" ; then
+        echo "The file $socketfile is not a socket file, which is suspicious." >&2
+        echo "Please, remove $socketfile manually to start the service." >&2
+        exit 1
+    fi
+
+    # some process uses the socket file
+    if fuser "$socketfile" &>/dev/null ; then
+        socketpid=$(fuser "$socketfile" 2>/dev/null)
+        echo "Is another MySQL daemon already running with the same unix socket?" >&2
+        echo "Please, stop the process $socketpid or remove $socketfile manually to start the service." >&2
+        exit 1
+    fi
+
+    # socket file is a garbage
+    echo "No process is using $socketfile, which means it is a garbage, so it will be removed automatically." >&2
 fi
 
 exit 0
diff --git a/mariadb.spec b/mariadb.spec
index bf9f34a..0ea764a 100644
--- a/mariadb.spec
+++ b/mariadb.spec
@@ -7,7 +7,7 @@
 
 Name: mariadb
 Version: 10.0.10
-Release: 2%{?dist}
+Release: 3%{?dist}
 Epoch: 1
 
 Summary: A community developed branch of MySQL
@@ -807,6 +807,9 @@ fi
 %{_mandir}/man1/mysql_client_test.1*
 
 %changelog
+* Mon May 05 2014 Honza Horak <hhorak at redhat.com> - 1:10.0.10-3
+- Script for socket check enhanced
+
 * Thu Apr 10 2014 Jakub Dorňák <jdornak at redhat.com> - 1:10.0.10-2
 - use system pcre library