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From 989ec0fb1bff496d35079cc97ad87cbc3495e79b Mon Sep 17 00:00:00 2001
From: Avra Sengupta <asengupt@redhat.com>
Date: Tue, 25 Oct 2016 12:44:29 +0530
Subject: [PATCH 149/157] glusterd/shared storage: Check for hook-script at staging

Check if S32gluster_enable_shared_storage.sh is present
at /var/lib/glusterd/hooks/1/set/post/ at staging
before proceeding with the command. Fail the command
with the appropriate error message in case it is not
present.

> Reviewed-on: http://review.gluster.org/15718
> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
> Smoke: Gluster Build System <jenkins@build.gluster.org>
> CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
> Reviewed-by: Atin Mukherjee <amukherj@redhat.com>

(cherry picked from commit 29587a91716e1e55bd172d63340c40249fb343c9)

Change-Id: I84e3912f1cdffb927f8a40d74d52be43ee69388b
BUG: 1389168
Signed-off-by: Avra Sengupta <asengupt@redhat.com>
Reviewed-on: http://review.gluster.org/15741
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/89246
---
 xlators/mgmt/glusterd/src/glusterd-op-sm.c |   29 ++++++++++++++++++++++-----
 xlators/mgmt/glusterd/src/glusterd.h       |    2 +
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/xlators/mgmt/glusterd/src/glusterd-op-sm.c b/xlators/mgmt/glusterd/src/glusterd-op-sm.c
index 2b6814b..0528fbd 100644
--- a/xlators/mgmt/glusterd/src/glusterd-op-sm.c
+++ b/xlators/mgmt/glusterd/src/glusterd-op-sm.c
@@ -773,12 +773,14 @@ out:
 static int
 glusterd_validate_shared_storage (char *key, char *value, char *errstr)
 {
-        int32_t            ret      = -1;
-        int32_t            exists   = -1;
-        int32_t            count    = -1;
-        char              *op       = NULL;
-        xlator_t          *this     = NULL;
-        glusterd_conf_t   *conf     = NULL;
+        int32_t            ret                      = -1;
+        int32_t            exists                   = -1;
+        int32_t            count                    = -1;
+        char              *op                       = NULL;
+        char               hook_script[PATH_MAX]    = "";
+        xlator_t          *this                     = NULL;
+        glusterd_conf_t   *conf                     = NULL;
+        struct stat        stbuf                    = {0,};
 
         this = THIS;
         GF_VALIDATE_OR_GOTO ("glusterd", this, out);
@@ -807,6 +809,21 @@ glusterd_validate_shared_storage (char *key, char *value, char *errstr)
                 goto out;
         }
 
+        snprintf (hook_script, sizeof(hook_script),
+                  "%s"GLUSTERD_SHRD_STRG_HOOK_SCRIPT, conf->workdir);
+
+        ret = sys_lstat (hook_script, &stbuf);
+        if (ret) {
+                snprintf (errstr, PATH_MAX,
+                          "The hook-script (%s) required "
+                          "for this operation is not present. "
+                          "Please install the hook-script "
+                          "and retry", hook_script);
+                gf_msg (this->name, GF_LOG_ERROR, ENOENT,
+                        GD_MSG_FILE_OP_FAILED, "%s", errstr);
+                goto out;
+        }
+
         if (!strncmp (value, "disable", strlen ("disable"))) {
                 ret = dict_get_str (conf->opts, GLUSTERD_SHARED_STORAGE_KEY,
                                                                            &op);
diff --git a/xlators/mgmt/glusterd/src/glusterd.h b/xlators/mgmt/glusterd/src/glusterd.h
index d981fa5..8695ab9 100644
--- a/xlators/mgmt/glusterd/src/glusterd.h
+++ b/xlators/mgmt/glusterd/src/glusterd.h
@@ -47,6 +47,8 @@
 #define GEO_CONF_MAX_OPT_VALS           6
 #define GLUSTERD_CREATE_HOOK_SCRIPT     "/hooks/1/gsync-create/post/" \
                                         "S56glusterd-geo-rep-create-post.sh"
+#define GLUSTERD_SHRD_STRG_HOOK_SCRIPT  "/hooks/1/set/post/" \
+                                        "S32gluster_enable_shared_storage.sh"
 #define GLUSTER_SHARED_STORAGE          "gluster_shared_storage"
 #define GLUSTERD_SHARED_STORAGE_KEY     "cluster.enable-shared-storage"
 
-- 
1.7.1