[dfs] fixup bugs in dfs_dentry_lookup (#8612)

Signed-off-by: Shell <smokewood@qq.com>

components/dfs/dfs_v2/include/dfs_dentry.h

@@ -41,6 +41,7 @@ struct dfs_dentry
 };
 
 struct dfs_dentry *dfs_dentry_create(struct dfs_mnt *mnt, char *fullpath);
+struct dfs_dentry *dfs_dentry_create_rela(struct dfs_mnt *mnt, char *rela_path);
 struct dfs_dentry *dfs_dentry_unref(struct dfs_dentry *dentry);
 struct dfs_dentry *dfs_dentry_ref(struct dfs_dentry *dentry);
 void dfs_dentry_insert(struct dfs_dentry *dentry);

components/dfs/dfs_v2/src/dfs_dentry.c

@@ -40,11 +40,11 @@ static uint32_t _dentry_hash(struct dfs_mnt *mnt, const char *path)
     return (val ^ (unsigned long) mnt) & (DFS_DENTRY_HASH_NR - 1);
 }
 
-struct dfs_dentry *dfs_dentry_create(struct dfs_mnt *mnt, char *fullpath)
+static struct dfs_dentry *_dentry_create(struct dfs_mnt *mnt, char *path, rt_bool_t is_rela_path)
 {
     struct dfs_dentry *dentry = RT_NULL;
 
-    if (mnt == RT_NULL || fullpath == RT_NULL)
+    if (mnt == RT_NULL || path == RT_NULL)
     {
         return dentry;
     }
@@ -52,15 +52,18 @@ struct dfs_dentry *dfs_dentry_create(struct dfs_mnt *mnt, char *fullpath)
     dentry = (struct dfs_dentry *)rt_calloc(1, sizeof(struct dfs_dentry));
     if (dentry)
     {
-        char *dentry_path = fullpath;
-        int mntpoint_len = strlen(mnt->fullpath);
-
-        if (rt_strncmp(mnt->fullpath, dentry_path, mntpoint_len) == 0)
+        char *dentry_path = path;
+        if (!is_rela_path)
         {
-            dentry_path += mntpoint_len;
+            int mntpoint_len = strlen(mnt->fullpath);
+
+            if (rt_strncmp(mnt->fullpath, dentry_path, mntpoint_len) == 0)
+            {
+                dentry_path += mntpoint_len;
+            }
         }
 
-        dentry->pathname = strlen(dentry_path) ? rt_strdup(dentry_path) : rt_strdup(fullpath);
+        dentry->pathname = strlen(dentry_path) ? rt_strdup(dentry_path) : rt_strdup(path);
         dentry->mnt = dfs_mnt_ref(mnt);
 
         rt_atomic_store(&(dentry->ref_count), 1);
@@ -72,6 +75,16 @@ struct dfs_dentry *dfs_dentry_create(struct dfs_mnt *mnt, char *fullpath)
     return dentry;
 }
 
+struct dfs_dentry *dfs_dentry_create(struct dfs_mnt *mnt, char *fullpath)
+{
+    return _dentry_create(mnt, fullpath, RT_FALSE);
+}
+
+struct dfs_dentry *dfs_dentry_create_rela(struct dfs_mnt *mnt, char *rela_path)
+{
+    return _dentry_create(mnt, rela_path, RT_TRUE);;
+}
+
 struct dfs_dentry * dfs_dentry_ref(struct dfs_dentry *dentry)
 {
     if (dentry)
@@ -206,8 +219,8 @@ struct dfs_dentry *dfs_dentry_lookup(struct dfs_mnt *mnt, const char *path, uint
         {
             DLOG(activate, "dentry");
             /* not in hash table, create it */
-            DLOG(msg, "dentry", "dentry", DLOG_MSG, "dfs_dentry_create(%s)", path);
-            dentry = dfs_dentry_create(mnt, (char*)path);
+            DLOG(msg, "dentry", "dentry", DLOG_MSG, "dfs_dentry_create_rela(mnt=%s, path=%s)", mnt->fullpath, path);
+            dentry = dfs_dentry_create_rela(mnt, (char*)path);
             if (dentry)
             {
                 DLOG(msg, "dentry", mnt->fs_ops->name, DLOG_MSG, "vnode=fs_ops->lookup(dentry)");

components/dfs/dfs_v2/src/dfs_file.c

@@ -1767,6 +1767,7 @@ int dfs_file_mmap2(struct dfs_file *file, struct dfs_mmap2_args *mmap2)
 
 #define _COLOR_RED      "\033[31m"
 #define _COLOR_GREEN    "\033[32m"
+#define _COLOR_YELLOW   "\033[33m"
 #define _COLOR_BLUE     "\033[34m"
 #define _COLOR_CYAN     "\033[36m"
 #define _COLOR_WHITE    "\033[37m"
@@ -1895,6 +1896,11 @@ void ls(const char *pathname)
                             rt_kprintf(_COLOR_GREEN "%-20s" _COLOR_NORMAL, dirent.d_name);
                             rt_kprintf("%-25lu\n", (unsigned long)stat.st_size);
                         }
+                        else if (S_ISCHR(stat.st_mode))
+                        {
+                            rt_kprintf(_COLOR_YELLOW "%-20s" _COLOR_NORMAL, dirent.d_name);
+                            rt_kprintf("%-25s\n", "<CHR>");
+                        }
                         else
                         {
                             rt_kprintf("%-20s", dirent.d_name);
@@ -1903,7 +1909,7 @@ void ls(const char *pathname)
                     }
                     else
                     {
-                        rt_kprintf(_COLOR_RED "%-20s" _COLOR_NORMAL, dirent.d_name);
+                        rt_kprintf(_COLOR_RED "%-20s\n" _COLOR_NORMAL, dirent.d_name);
                     }
 
                     rt_free(fullpath);