From fa53571f2b1670383b4536540de35b732f973ac7 Mon Sep 17 00:00:00 2001
From: Jo-Philipp Wich <jow@openwrt.org>
Date: Thu, 5 Sep 2013 15:14:00 +0200
Subject: [PATCH] Use common /var/run/rpcd base directory to store runtime
 information

---
 include/rpcd/session.h | 2 +-
 include/rpcd/uci.h     | 2 ++
 main.c                 | 5 +++++
 uci.c                  | 8 ++++----
 4 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/include/rpcd/session.h b/include/rpcd/session.h
index 70891bc..7fa388e 100644
--- a/include/rpcd/session.h
+++ b/include/rpcd/session.h
@@ -32,7 +32,7 @@
 
 #define RPC_SID_LEN	32
 #define RPC_DEFAULT_SESSION_TIMEOUT	300
-#define RPC_SESSION_DIRECTORY	"/var/run/rpcd"
+#define RPC_SESSION_DIRECTORY	"/var/run/rpcd/sessions"
 
 struct rpc_session {
 	struct avl_node avl;
diff --git a/include/rpcd/uci.h b/include/rpcd/uci.h
index 7a169f2..e334b9c 100644
--- a/include/rpcd/uci.h
+++ b/include/rpcd/uci.h
@@ -30,6 +30,8 @@
 #include <libubus.h>
 #include <uci.h>
 
+#define RPC_UCI_SAVEDIR_PREFIX  "/var/run/rpcd/uci-"
+
 int rpc_uci_api_init(struct ubus_context *ctx);
 
 void rpc_uci_purge_savedirs(void);
diff --git a/main.c b/main.c
index 5a608c2..0bb06ce 100644
--- a/main.c
+++ b/main.c
@@ -22,6 +22,7 @@
 #include <libubox/blobmsg_json.h>
 #include <libubus.h>
 #include <signal.h>
+#include <sys/stat.h>
 
 #include <rpcd/session.h>
 #include <rpcd/uci.h>
@@ -58,6 +59,7 @@ exec_self(int argc, char **argv)
 
 int main(int argc, char **argv)
 {
+	struct stat s;
 	const char *hangup;
 	const char *ubus_socket = NULL;
 	int ch;
@@ -72,6 +74,9 @@ int main(int argc, char **argv)
 		}
 	}
 
+	if (stat("/var/run/rpcd", &s))
+		mkdir("/var/run/rpcd", 0700);
+
 	signal(SIGPIPE, SIG_IGN);
 	signal(SIGHUP,  handle_signal);
 	signal(SIGUSR1, handle_signal);
diff --git a/uci.c b/uci.c
index 0fede86..11df4d9 100644
--- a/uci.c
+++ b/uci.c
@@ -185,7 +185,7 @@ rpc_uci_set_savedir(struct blob_attr *sid)
 	}
 
 	snprintf(path, sizeof(path) - 1,
-	         "/tmp/.uci-rpc-%s", (char *)blobmsg_data(sid));
+	         RPC_UCI_SAVEDIR_PREFIX "%s", blobmsg_get_string(sid));
 
 	uci_set_savedir(cursor, path);
 }
@@ -1151,12 +1151,12 @@ rpc_uci_purge_savedir_cb(struct rpc_session *ses, void *priv)
 {
 	char path[PATH_MAX];
 
-	snprintf(path, sizeof(path) - 1, "/tmp/.uci-rpc-%s", ses->id);
+	snprintf(path, sizeof(path) - 1, RPC_UCI_SAVEDIR_PREFIX "%s", ses->id);
 	rpc_uci_purge_savedir(path);
 }
 
 /*
- * Removes all delta directories which match the /tmp/.uci-rpc-* pattern.
+ * Removes all delta directories which match the RPC_UCI_SAVEDIR_PREFIX.
  * This is used to clean up garbage when starting rpcd.
  */
 void rpc_uci_purge_savedirs(void)
@@ -1164,7 +1164,7 @@ void rpc_uci_purge_savedirs(void)
 	int i;
 	glob_t gl;
 
-	if (!glob("/tmp/.uci-rpc-*", 0, NULL, &gl))
+	if (!glob(RPC_UCI_SAVEDIR_PREFIX "*", 0, NULL, &gl))
 	{
 		for (i = 0; i < gl.gl_pathc; i++)
 			rpc_uci_purge_savedir(gl.gl_pathv[i]);