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| author |   Jonathan Corbet <corbet@lwn.net> | 2016-12-27 12:53:44 -0700 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2016-12-27 12:53:44 -0700 |
| commit | 54ab6db0909061ab7ee07233d3cab86d29f86e6c (patch) | |
| tree | a7650ab5c0fa3a6a3841de8e8693041b3e009054 /fs/ecryptfs/inode.c | |
| parent | docs: sphinx-extensions: make rstFlatTable work with docutils 0.13 (diff) | |
| parent | Linux 4.10-rc1 (diff) | |
| download | wireguard-linux-54ab6db0909061ab7ee07233d3cab86d29f86e6c.tar.xz wireguard-linux-54ab6db0909061ab7ee07233d3cab86d29f86e6c.zip | |
Merge tag 'v4.10-rc1' into docs-next
Linux 4.10-rc1
Diffstat (limited to 'fs/ecryptfs/inode.c')
| -rw-r--r-- | fs/ecryptfs/inode.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index cf390dceddd2..e7413f82d27b 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, @@ -1089,7 +1084,6 @@ out: } const struct inode_operations ecryptfs_symlink_iops = { - .readlink = generic_readlink, .get_link = ecryptfs_get_link, .permission = ecryptfs_permission, .setattr = ecryptfs_setattr, |