diff options
| -rw-r--r-- | fs/ecryptfs/inode.c | 29 |
1 files changed, 12 insertions, 17 deletions
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index cf390dceddd2..4ea9d69152dc 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -631,28 +631,23 @@ out_lock: static char *ecryptfs_readlink_lower(struct dentry *dentry, size_t *bufsiz) { + DEFINE_DELAYED_CALL(done); struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry); - char *lower_buf; + const char *link; char *buf; - mm_segment_t old_fs; int rc; - lower_buf = kmalloc(PATH_MAX, GFP_KERNEL); - if (!lower_buf) - return ERR_PTR(-ENOMEM); - old_fs = get_fs(); - set_fs(get_ds()); - rc = d_inode(lower_dentry)->i_op->readlink(lower_dentry, - (char __user *)lower_buf, - PATH_MAX); - set_fs(old_fs); - if (rc < 0) - goto out; + link = vfs_get_link(lower_dentry, &done); + if (IS_ERR(link)) + return ERR_CAST(link); + rc = ecryptfs_decode_and_decrypt_filename(&buf, bufsiz, dentry->d_sb, - lower_buf, rc); -out: - kfree(lower_buf); - return rc ? ERR_PTR(rc) : buf; + link, strlen(link)); + do_delayed_call(&done); + if (rc) + return ERR_PTR(rc); + + return buf; } static const char *ecryptfs_get_link(struct dentry *dentry, |