luci2: add diskfree call

diff --git a/luci2.c b/luci2.c
index ba915333bec43100a82a52e6a7e2fad0ecc304a0..d6f2e5f1cd9f6b9f613effeae5fc009b99da5fc0 100644 (file)
--- a/luci2.c
+++ b/luci2.c
@@ -25,6 +25,7 @@
 #include <sys/wait.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <sys/statvfs.h>
 #include <dirent.h>
 #include <arpa/inet.h>
 #include <signal.h>
@@ -259,6 +260,39 @@ rpc_luci2_system_dmesg(struct ubus_context *ctx, struct ubus_object *obj,
        return 0;
 }
 
+static int
+rpc_luci2_system_diskfree(struct ubus_context *ctx, struct ubus_object *obj,
+                          struct ubus_request_data *req, const char *method,
+                          struct blob_attr *msg)
+{
+       int i;
+       void *c;
+       struct statvfs s;
+       const char *fslist[] = {
+               "/",    "root",
+               "/tmp", "tmp",
+       };
+
+       blob_buf_init(&buf, 0);
+
+       for (i = 0; i < sizeof(fslist) / sizeof(fslist[0]); i += 2)
+       {
+               if (statvfs(fslist[i], &s))
+                       continue;
+
+               c = blobmsg_open_table(&buf, fslist[i+1]);
+
+               blobmsg_add_u32(&buf, "total", s.f_blocks * s.f_frsize);
+               blobmsg_add_u32(&buf, "free",  s.f_bfree  * s.f_frsize);
+               blobmsg_add_u32(&buf, "used", (s.f_blocks - s.f_bfree) * s.f_frsize);
+
+               blobmsg_close_table(&buf, c);
+       }
+
+       ubus_send_reply(ctx, req, buf.head);
+       return 0;
+}
+
 static int
 rpc_luci2_process_list(struct ubus_context *ctx, struct ubus_object *obj,
                        struct ubus_request_data *req, const char *method,
@@ -1408,6 +1442,7 @@ int rpc_luci2_api_init(struct ubus_context *ctx)
        static const struct ubus_method luci2_system_methods[] = {
                UBUS_METHOD_NOARG("syslog",       rpc_luci2_system_log),
                UBUS_METHOD_NOARG("dmesg",        rpc_luci2_system_dmesg),
+               UBUS_METHOD_NOARG("diskfree",     rpc_luci2_system_diskfree),
                UBUS_METHOD_NOARG("process_list", rpc_luci2_process_list),
                UBUS_METHOD("process_signal",     rpc_luci2_process_signal,
                                                  rpc_signal_policy),