introduce ->iterate(), ctx->pos, dir_emit()

[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / fs / coda / dir.c

diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index b7d3a05c062c0517bdcee3aedf01619f60bddc7a..fc66861b359855d46b4fbdfae5a4fa1889906629 100644 (file)
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -391,8 +391,7 @@ static int coda_readdir(struct file *coda_file, void *buf, filldir_t filldir)
        if (!host_file->f_op)
                return -ENOTDIR;
 
-       if (host_file->f_op->readdir)
-       {
+       if (host_file->f_op->readdir) {
                /* potemkin case: we were handed a directory inode.
                 * We can't use vfs_readdir because we have to keep the file
                 * position in sync between the coda_file and the host_file.
@@ -410,8 +409,20 @@ static int coda_readdir(struct file *coda_file, void *buf, filldir_t filldir)
 
                coda_file->f_pos = host_file->f_pos;
                mutex_unlock(&host_inode->i_mutex);
-       }
-       else /* Venus: we must read Venus dirents from a file */
+       } else if (host_file->f_op->iterate) {
+               struct inode *host_inode = file_inode(host_file);
+               struct dir_context *ctx = buf;
+
+               mutex_lock(&host_inode->i_mutex);
+               ret = -ENOENT;
+               if (!IS_DEADDIR(host_inode)) {
+                       ret = host_file->f_op->iterate(host_file, ctx);
+                       file_accessed(host_file);
+               }
+               mutex_unlock(&host_inode->i_mutex);
+
+               coda_file->f_pos = ctx->pos;
+       } else /* Venus: we must read Venus dirents from a file */
                ret = coda_venus_readdir(coda_file, buf, filldir);
 
        return ret;