X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;ds=sidebyside;f=fs%2Fanon_inodes.c;h=e4b75d6eda839d6fddae166904d1002f85a4d09f;hb=ba8b06e67ed7a560b0e7c80091bcadda4f4727a5;hp=2ca7a7cafdbf9359ccf1a706a5fdda11f3fe157e;hpb=a99bbaf5ee6bad1aca0c88ea65ec6e5373e86184;p=safe%2Fjmp%2Flinux-2.6

diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 2ca7a7c..e4b75d6 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -12,7 +12,6 @@
 #include <linux/file.h>
 #include <linux/poll.h>
 #include <linux/sched.h>
-#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <linux/mount.h>
@@ -35,14 +34,13 @@ static int anon_inodefs_get_sb(struct file_system_type *fs_type, int flags,
 			     mnt);
 }
 
-static int anon_inodefs_delete_dentry(struct dentry *dentry)
+/*
+ * anon_inodefs_dname() is called from d_path().
+ */
+static char *anon_inodefs_dname(struct dentry *dentry, char *buffer, int buflen)
 {
-	/*
-	 * We faked vfs to believe the dentry was hashed when we created it.
-	 * Now we restore the flag so that dput() will work correctly.
-	 */
-	dentry->d_flags |= DCACHE_UNHASHED;
-	return 1;
+	return dynamic_dname(dentry, buffer, buflen, "anon_inode:%s",
+				dentry->d_name.name);
 }
 
 static struct file_system_type anon_inode_fs_type = {
@@ -51,7 +49,7 @@ static struct file_system_type anon_inode_fs_type = {
 	.kill_sb	= kill_anon_super,
 };
 static const struct dentry_operations anon_inodefs_dentry_operations = {
-	.d_delete	= anon_inodefs_delete_dentry,
+	.d_dname	= anon_inodefs_dname,
 };
 
 /*
@@ -88,7 +86,7 @@ struct file *anon_inode_getfile(const char *name,
 				void *priv, int flags)
 {
 	struct qstr this;
-	struct dentry *dentry;
+	struct path path;
 	struct file *file;
 	int error;
 
@@ -106,10 +104,11 @@ struct file *anon_inode_getfile(const char *name,
 	this.name = name;
 	this.len = strlen(name);
 	this.hash = 0;
-	dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
-	if (!dentry)
+	path.dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
+	if (!path.dentry)
 		goto err_module;
 
+	path.mnt = mntget(anon_inode_mnt);
 	/*
 	 * We know the anon_inode inode count is always greater than zero,
 	 * so we can avoid doing an igrab() and we can use an open-coded
@@ -117,27 +116,24 @@ struct file *anon_inode_getfile(const char *name,
 	 */
 	atomic_inc(&anon_inode_inode->i_count);
 
-	dentry->d_op = &anon_inodefs_dentry_operations;
-	/* Do not publish this dentry inside the global dentry hash table */
-	dentry->d_flags &= ~DCACHE_UNHASHED;
-	d_instantiate(dentry, anon_inode_inode);
+	path.dentry->d_op = &anon_inodefs_dentry_operations;
+	d_instantiate(path.dentry, anon_inode_inode);
 
 	error = -ENFILE;
-	file = alloc_file(anon_inode_mnt, dentry,
-			  FMODE_READ | FMODE_WRITE, fops);
+	file = alloc_file(&path, OPEN_FMODE(flags), fops);
 	if (!file)
 		goto err_dput;
 	file->f_mapping = anon_inode_inode->i_mapping;
 
 	file->f_pos = 0;
-	file->f_flags = O_RDWR | (flags & O_NONBLOCK);
+	file->f_flags = flags & (O_ACCMODE | O_NONBLOCK);
 	file->f_version = 0;
 	file->private_data = priv;
 
 	return file;
 
 err_dput:
-	dput(dentry);
+	path_put(&path);
 err_module:
 	module_put(fops->owner);
 	return ERR_PTR(error);
@@ -212,6 +208,7 @@ static struct inode *anon_inode_mkinode(void)
 	inode->i_mode = S_IRUSR | S_IWUSR;
 	inode->i_uid = current_fsuid();
 	inode->i_gid = current_fsgid();
+	inode->i_flags |= S_PRIVATE;
 	inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
 	return inode;
 }