2 files changed, 25 insertions, 0 deletions
diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index e7d54d48b22..6a5e2504b75 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -1946,3 +1946,11 @@ get_mem_size ()
 
         return memsize;
 }
+
+
+int
+gf_client_pid_check (gf_client_pid_t npid)
+{
+        return ( (npid > GF_CLIENT_PID_MIN) && (npid < GF_CLIENT_PID_MAX) )
+                ? 0 : -1;
+}
diff --git a/libglusterfs/src/common-utils.h b/libglusterfs/src/common-utils.h
index 2a5e00c5e11..6c83a100427 100644
--- a/libglusterfs/src/common-utils.h
+++ b/libglusterfs/src/common-utils.h
@@ -78,7 +78,23 @@ enum _gf_boolean
 	_gf_true = 1
 };
 
+/*
+ * we could have initialized these as +ve values and treated
+ * them as negative while comparing etc.. (which would have
+ * saved us with the pain of assigning values), but since we
+ * only have a couple of clients that use this feature, it's
+ * okay.
+ */
+enum _gf_client_pid
+{
+        GF_CLIENT_PID_MAX    =  0,
+        GF_CLIENT_PID_GSYNCD = -1,
+        GF_CLIENT_PID_HADOOP = -2,
+        GF_CLIENT_PID_MIN    = -3
+};
+
 typedef enum _gf_boolean gf_boolean_t;
+typedef enum _gf_client_pid gf_client_pid_t;
 typedef int (*gf_cmp) (void *, void *);
 
 void gf_global_variable_init(void);
@@ -401,4 +417,5 @@ char *get_host_name (char *word, char **host);
 char *get_path_name (char *word, char **path);
 void gf_path_strip_trailing_slashes (char *path);
 uint64_t get_mem_size ();
+int gf_client_pid_check (gf_client_pid_t npid);
 #endif /* _COMMON_UTILS_H */