🐞 fix(dfs_v2): fix memory write-through

xqyjlj · xqyjlj · commit 95a54ea5233a · 2023-10-16T15:41:25.000+08:00
diff --git a/components/dfs/dfs_v2/src/dfs_file.c b/components/dfs/dfs_v2/src/dfs_file.c
@@ -210,7 +210,7 @@ static char *dfs_nolink_path(struct dfs_mnt **mnt, char *fullpath, int mode)
     char link_fn[DFS_PATH_MAX] = {0};
     struct dfs_dentry *dentry = RT_NULL;
 
-    path = (char *)rt_malloc(DFS_PATH_MAX);
+    path = (char *)rt_malloc((DFS_PATH_MAX * 2) + 1); // path + syslink + \0
     if (!path)
     {
         return path;

Original file line number	Diff line number	Diff line change
`@@ -210,7 +210,7 @@ static char dfs_nolink_path(struct dfs_mnt mnt, char fullpath, int mode)`
`210`	`210`	`char link_fn[DFS_PATH_MAX] = {0};`
`211`	`211`	`struct dfs_dentry *dentry = RT_NULL;`
`212`	`212`
`213`		`- path = (char *)rt_malloc(DFS_PATH_MAX);`
	`213`	`+ path = (char )rt_malloc((DFS_PATH_MAX 2) + 1); // path + syslink + \0`
`214`	`214`	`if (!path)`
`215`	`215`	`{`
`216`	`216`	`return path;`