Re: [V9fs-developer] [PATCH 1/3] fs/9p: Update TLCREATE to allow create without open

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On 10/6/2010 4:03 AM, Aneesh Kumar K. V wrote:
On Wed, 06 Oct 2010 11:48:15 +0530, "Aneesh Kumar K. V"<aneesh.kumar@xxxxxxxxxxxxxxxxxx>  wrote:
On Tue, 5 Oct 2010 13:15:42 -0400, Eric Van Hensbergen<ericvh@xxxxxxxxx>  wrote:
Ouch.  Protocol change.

Also - not sure I understand what's going on here.  Why does mknod go
through TLCREATE, shouldn't we have our
own protocol messages for mknod?//

This is needed for the below mknod usage

mknod("k2", S_IFREG) ;



May be a better fix is to make sure we use TLMKNOD instead of TLCREATE
in case we get a create without LOOKUP_OPEN flags set. So how about

Yep. This sounds much better. :)

- JV


diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 2f904a8..e89754f 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -55,6 +55,10 @@ static const struct inode_operations v9fs_file_inode_operations_dotl;
  static const struct inode_operations v9fs_symlink_inode_operations;
  static const struct inode_operations v9fs_symlink_inode_operations_dotl;

+static int
+v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode,
+		    dev_t rdev);
+
  /**
   * unixmode2p9mode - convert unix mode bits to plan 9
   * @v9ses: v9fs session information
@@ -681,8 +685,14 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode,
  	v9ses = v9fs_inode2v9ses(dir);
  	if (nd&&  nd->flags&  LOOKUP_OPEN)
  		flags = nd->intent.open.flags - 1;
-	else
-		flags = O_RDWR;
+	else {
+		/*
+		 * create call without LOOKUP_OPEN is due
+		 * to mknod of regular files. So use mknod
+		 * operation.
+		 */
+		return v9fs_vfs_mknod_dotl(dir, dentry, omode, 0);
+	}

  	name = (char *) dentry->d_name.name;
  	P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_create_dotl: name:%s flags:0x%x "

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