From a118801bfeefb8579255f04f8fcab540a2f0deba Mon Sep 17 00:00:00 2001
From: bernard <bernard.xiong@gmail.com>
Date: Thu, 26 Jun 2014 13:59:26 +0800
Subject: [PATCH] [DFS] Add dfs_filesystem_get_mounted_path() function.

---
 components/dfs/include/dfs_fs.h |  2 ++
 components/dfs/src/dfs_fs.c     | 31 +++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/components/dfs/include/dfs_fs.h b/components/dfs/include/dfs_fs.h
index 3fa999c34..498aa5db5 100644
--- a/components/dfs/include/dfs_fs.h
+++ b/components/dfs/include/dfs_fs.h
@@ -94,6 +94,8 @@ struct dfs_mount_tbl
 
 int dfs_register(const struct dfs_filesystem_operation *ops);
 struct dfs_filesystem *dfs_filesystem_lookup(const char *path);
+const char* dfs_filesystem_get_mounted_path(struct rt_device* device);
+
 rt_err_t dfs_filesystem_get_partition(struct dfs_partition *part,
                                       rt_uint8_t           *buf,
                                       rt_uint32_t           pindex);
diff --git a/components/dfs/src/dfs_fs.c b/components/dfs/src/dfs_fs.c
index a41f36cf0..bdd9560d5 100644
--- a/components/dfs/src/dfs_fs.c
+++ b/components/dfs/src/dfs_fs.c
@@ -115,6 +115,37 @@ struct dfs_filesystem *dfs_filesystem_lookup(const char *path)
     return fs;
 }
 
+/**
+ * this function will return the mounted path for specified device. 
+ *
+ * @param device the device object which is mounted.
+ *
+ * @return the mounted path or RT_NULL if none device mounted. 
+ */
+const char* dfs_filesystem_get_mounted_path(struct rt_device* device)
+{
+	const char* path = RT_NULL;
+    struct dfs_filesystem *iter;
+
+    dfs_lock();
+    for (iter = &filesystem_table[0];
+            iter < &filesystem_table[DFS_FILESYSTEMS_MAX]; iter++)
+    {
+		/* fint the mounted device */
+        if (iter->ops == RT_NULL) continue;
+		else if (iter->dev_id == device) 
+		{
+			path = iter->path;
+			break;
+		}
+    }
+
+    /* release filesystem_table lock */
+    dfs_unlock();
+
+	return path;
+}
+
 /**
  * this function will fetch the partition table on specified buffer.
  *
-- 
GitLab