diff mbox series

[v11,4/9] KEYS: Move KEY_LOOKUP_ to include/linux/key.h

Message ID 20220812101902.2846182-5-roberto.sassu@huawei.com (mailing list archive)
State Changes Requested
Delegated to: BPF
Headers show
Series bpf: Add kfuncs for PKCS#7 signature verification | expand

Checks

Context Check Description
bpf/vmtest-bpf-next-PR fail PR summary
bpf/vmtest-bpf-next-VM_Test-3 fail Logs for Kernel LATEST on z15 with gcc
bpf/vmtest-bpf-next-VM_Test-1 fail Logs for Kernel LATEST on ubuntu-latest with gcc
bpf/vmtest-bpf-next-VM_Test-2 fail Logs for Kernel LATEST on ubuntu-latest with llvm-16
netdev/tree_selection success Guessed tree name to be net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1579017 this patch: 1579017
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 4322 this patch: 4322
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1633212 this patch: 1633212
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 25 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Roberto Sassu Aug. 12, 2022, 10:18 a.m. UTC 
In preparation for the patch that introduces the bpf_lookup_user_key() eBPF
kfunc, move KEY_LOOKUP_ definitions to include/linux/key.h, to be able to
validate the kfunc parameters.

Also, introduce key_lookup_flags_check() directly in include/linux/key.h,
to reduce the risk that the check is not in sync with currently defined
flags.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: KP Singh <kpsingh@kernel.org>
---
 include/linux/key.h      | 11 +++++++++++
 security/keys/internal.h |  2 --
 2 files changed, 11 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/include/linux/key.h b/include/linux/key.h
index 7febc4881363..b5bbae77a9e7 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -88,6 +88,17 @@  enum key_need_perm {
 	KEY_DEFER_PERM_CHECK,	/* Special: permission check is deferred */
 };
 
+#define KEY_LOOKUP_CREATE	0x01
+#define KEY_LOOKUP_PARTIAL	0x02
+
+static inline int key_lookup_flags_check(u64 flags)
+{
+	if (flags & ~(KEY_LOOKUP_CREATE | KEY_LOOKUP_PARTIAL))
+		return -EINVAL;
+
+	return 0;
+}
+
 struct seq_file;
 struct user_struct;
 struct signal_struct;
diff --git a/security/keys/internal.h b/security/keys/internal.h
index 9b9cf3b6fcbb..3c1e7122076b 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -165,8 +165,6 @@  extern struct key *request_key_and_link(struct key_type *type,
 
 extern bool lookup_user_key_possessed(const struct key *key,
 				      const struct key_match_data *match_data);
-#define KEY_LOOKUP_CREATE	0x01
-#define KEY_LOOKUP_PARTIAL	0x02
 
 extern long join_session_keyring(const char *name);
 extern void key_change_session_keyring(struct callback_head *twork);