Commit 90fd8f26 authored by Roberto Sassu's avatar Roberto Sassu Committed by Alexei Starovoitov
Browse files

KEYS: Move KEY_LOOKUP_ to include/linux/key.h and define KEY_LOOKUP_ALL 



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. Add them to enum key_lookup_flag, so that
all the current ones and the ones defined in the future are automatically
exported through BTF and available to eBPF programs.

Also, add KEY_LOOKUP_ALL to the enum, with the logical OR of currently
defined flags as value, to facilitate checking whether a variable contains
only those flags.

Signed-off-by: default avatarRoberto Sassu <roberto.sassu@huawei.com>
Acked-by: default avatarJarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20220920075951.929132-7-roberto.sassu@huaweicloud.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 51df4865

include/linux/key.h

+6 −0
Original line number Diff line number Diff line
@@ -88,6 +88,12 @@ enum key_need_perm { 
	KEY_DEFER_PERM_CHECK,	/* Special: permission check is deferred */

};



enum key_lookup_flag {

	KEY_LOOKUP_CREATE = 0x01,

	KEY_LOOKUP_PARTIAL = 0x02,

	KEY_LOOKUP_ALL = (KEY_LOOKUP_CREATE | KEY_LOOKUP_PARTIAL),

};



struct seq_file;

struct user_struct;

struct signal_struct;

security/keys/internal.h

+0 −2
Original line number Diff line number Diff line
@@ -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);