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ovl: port ovl_llseek() to cred guard

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Use the scoped ovl cred guard.

Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-v4-8-b31603935724@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 10:33:39 +01:00
parent b27ebb3d4b
commit 1fc4bc77c7
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 2 additions and 4 deletions
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6
fs/overlayfs/file.c
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@ -243,7 +243,6 @@ static loff_t ovl_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file_inode(file);
struct file *realfile;
const struct cred *old_cred;
loff_t ret;
/*
@ -272,9 +271,8 @@ static loff_t ovl_llseek(struct file *file, loff_t offset, int whence)
ovl_inode_lock(inode);
realfile->f_pos = file->f_pos;
old_cred = ovl_override_creds(inode->i_sb);
ret = vfs_llseek(realfile, offset, whence);
ovl_revert_creds(old_cred);
with_ovl_creds(inode->i_sb)
ret = vfs_llseek(realfile, offset, whence);
file->f_pos = realfile->f_pos;
ovl_inode_unlock(inode);