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nfs: use credential guards in nfs_idmap_get_key()

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Use credential guards for scoped credential override with automatic
restoration on scope exit.

Link: https://patch.msgid.link/20251103-work-creds-guards-simple-v1-12-a3e156839e7f@kernel.org
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2025-11-03 12:27:00 +01:00
parent bff3c841f7
commit f41799b2e1
1 changed files with 2 additions and 5 deletions
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7
fs/nfs/nfs4idmap.c
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@@ -306,15 +306,12 @@ static ssize_t nfs_idmap_get_key(const char *name, size_t namelen,
const char *type, void *data,
size_t data_size, struct idmap *idmap)
{
const struct cred *saved_cred;
struct key *rkey;
const struct user_key_payload *payload;
ssize_t ret;
saved_cred = override_creds(id_resolver_cache);
rkey = nfs_idmap_request_key(name, namelen, type, idmap);
revert_creds(saved_cred);
scoped_with_creds(id_resolver_cache)
rkey = nfs_idmap_request_key(name, namelen, type, idmap);
if (IS_ERR(rkey)) {
ret = PTR_ERR(rkey);
goto out;