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ovl: port ovl_fiemap() to cred guard

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Use the scoped ovl cred guard.

Link: https://patch.msgid.link/20251117-work-ovl-cred-guard-v4-19-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 10:33:50 +01:00
parent 8e9698d6e4
commit a3860a808f
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GPG Key ID: 91C61BC06578DCA2
1 changed files with 2 additions and 7 deletions
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9
fs/overlayfs/inode.c
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@ -576,9 +576,7 @@ int ovl_update_time(struct inode *inode, int flags)
static int ovl_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
u64 start, u64 len)
{
int err;
struct inode *realinode = ovl_inode_realdata(inode);
const struct cred *old_cred;
if (!realinode)
return -EIO;
@ -586,11 +584,8 @@ static int ovl_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
if (!realinode->i_op->fiemap)
return -EOPNOTSUPP;
old_cred = ovl_override_creds(inode->i_sb);
err = realinode->i_op->fiemap(realinode, fieinfo, start, len);
ovl_revert_creds(old_cred);
return err;
with_ovl_creds(inode->i_sb)
return realinode->i_op->fiemap(realinode, fieinfo, start, len);
}
/*