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ovl: port ovl_copy_up_tmpfile() to cred guard

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Remove the complicated struct ovl_cu_creds dance and use our new copy up
cred guard.

Link: https://patch.msgid.link/20251114-work-ovl-cred-guard-copyup-v1-4-ea3fb15cf427@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2025-11-14 23:45:25 +01:00
parent 643b8a2c0a
commit 72f098f0dd
1 changed files with 8 additions and 8 deletions
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16
fs/overlayfs/copy_up.c
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@@ -883,17 +883,17 @@ static int ovl_copy_up_tmpfile(struct ovl_copy_up_ctx *c)
struct inode *udir = d_inode(c->destdir);
struct dentry *temp, *upper;
struct file *tmpfile;
struct ovl_cu_creds cc;
int err;
err = ovl_prep_cu_creds(c->dentry, &cc);
if (err)
return err;
scoped_class(copy_up_creds, copy_up_creds, c->dentry) {
if (IS_ERR(copy_up_creds))
return PTR_ERR(copy_up_creds);
ovl_start_write(c->dentry);
tmpfile = ovl_do_tmpfile(ofs, c->workdir, c->stat.mode);
ovl_end_write(c->dentry);
}
ovl_start_write(c->dentry);
tmpfile = ovl_do_tmpfile(ofs, c->workdir, c->stat.mode);
ovl_end_write(c->dentry);
ovl_revert_cu_creds(&cc);
if (IS_ERR(tmpfile))
return PTR_ERR(tmpfile);