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Commit 1e6b0ff0 authored by Daniel Rosenberg's avatar Daniel Rosenberg Committed by Todd Kjos
Browse files

ANDROID: sdcardfs: Change current->fs under lock 



bug: 111641492

Change-Id: I79e9894f94880048edaf0f7cfa2d180f65cbcf3b
Reported-by: default avatarJann Horn <jannh@google.com>
Signed-off-by: default avatarDaniel Rosenberg <drosen@google.com>
parent 29d3d43a

fs/sdcardfs/inode.c

+13 −2
Original line number Diff line number Diff line
@@ -96,8 +96,11 @@ static int sdcardfs_create(struct inode *dir, struct dentry *dentry, 
		err = -ENOMEM;

		goto out_unlock;

	}

	copied_fs->umask = 0;

	task_lock(current);

	current->fs = copied_fs;

	current->fs->umask = 0;

	task_unlock(current);



	err = vfs_create2(lower_dentry_mnt, d_inode(lower_parent_dentry), lower_dentry, mode, want_excl);

	if (err)

		goto out;
@@ -111,7 +114,9 @@ static int sdcardfs_create(struct inode *dir, struct dentry *dentry, 
	fixup_lower_ownership(dentry, dentry->d_name.name);



out:

	task_lock(current);

	current->fs = saved_fs;

	task_unlock(current);

	free_fs_struct(copied_fs);

out_unlock:

	unlock_dir(lower_parent_dentry);
@@ -249,8 +254,11 @@ static int sdcardfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode 
		unlock_dir(lower_parent_dentry);

		goto out_unlock;

	}

	copied_fs->umask = 0;

	task_lock(current);

	current->fs = copied_fs;

	current->fs->umask = 0;

	task_unlock(current);



	err = vfs_mkdir2(lower_mnt, d_inode(lower_parent_dentry), lower_dentry, mode);



	if (err) {
@@ -318,7 +326,10 @@ static int sdcardfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode 
		}

	}

out:

	task_lock(current);

	current->fs = saved_fs;

	task_unlock(current);



	free_fs_struct(copied_fs);

out_unlock:

	sdcardfs_put_lower_path(dentry, &lower_path);