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ovl: drop ovl_setup_cred_for_create()

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It is now unused and can be removed.

Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-prepare-v2-6-bd1c97a36d7b@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2025-11-17 10:34:43 +01:00
parent e566bff963
commit 89a11f004f
1 changed files with 0 additions and 33 deletions
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33
fs/overlayfs/dir.c
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@@ -617,39 +617,6 @@ DEFINE_CLASS(ovl_override_creator_creds,
ovl_override_creator_creds(dentry, inode, mode),
struct dentry *dentry, struct inode *inode, umode_t mode)
static const __maybe_unused struct cred *ovl_setup_cred_for_create(struct dentry *dentry,
struct inode *inode,
umode_t mode,
const struct cred *old_cred)
{
int err;
struct cred *override_cred;
override_cred = prepare_creds();
if (!override_cred)
return ERR_PTR(-ENOMEM);
override_cred->fsuid = inode->i_uid;
override_cred->fsgid = inode->i_gid;
err = security_dentry_create_files_as(dentry, mode, &dentry->d_name,
old_cred, override_cred);
if (err) {
put_cred(override_cred);
return ERR_PTR(err);
}
/*
* Caller is going to match this with revert_creds() and drop
* referenec on the returned creds.
* We must be called with creator creds already, otherwise we risk
* leaking creds.
*/
old_cred = override_creds(override_cred);
WARN_ON_ONCE(old_cred != ovl_creds(dentry->d_sb));
return override_cred;
}
static int ovl_create_handle_whiteouts(struct dentry *dentry,
struct inode *inode,
struct ovl_cattr *attr)