On Aug 29, 2024 Casey Schaufler <[email protected]> wrote: > > There may be more than one LSM that provides IPC data for auditing. > Change security_ipc_getsecid() to fill in a lsmblob structure instead > of the u32 secid. Change the name to security_ipc_getlsmblob() to > reflect the change. The audit data structure containing the secid > will be updated later, so there is a bit of scaffolding here.
I think that last sentence needs to be updated based on the current ordering in the patchset. > Signed-off-by: Casey Schaufler <[email protected]> > Cc: [email protected] > Cc: [email protected] > Cc: [email protected] > --- > include/linux/lsm_hook_defs.h | 4 ++-- > include/linux/security.h | 18 +++++++++++++++--- > kernel/auditsc.c | 3 +-- > security/security.c | 14 +++++++------- > security/selinux/hooks.c | 9 ++++++--- > security/smack/smack_lsm.c | 17 ++++++++++------- > 6 files changed, 41 insertions(+), 24 deletions(-) > > diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h > index 3e5f6baa7b9f..c3ffc3f98343 100644 > --- a/include/linux/lsm_hook_defs.h > +++ b/include/linux/lsm_hook_defs.h > @@ -253,8 +253,8 @@ LSM_HOOK(void, LSM_RET_VOID, task_to_inode, struct > task_struct *p, > struct inode *inode) > LSM_HOOK(int, 0, userns_create, const struct cred *cred) > LSM_HOOK(int, 0, ipc_permission, struct kern_ipc_perm *ipcp, short flag) > -LSM_HOOK(void, LSM_RET_VOID, ipc_getsecid, struct kern_ipc_perm *ipcp, > - u32 *secid) > +LSM_HOOK(void, LSM_RET_VOID, ipc_getlsmblob, struct kern_ipc_perm *ipcp, > + struct lsmblob *blob) > LSM_HOOK(int, 0, msg_msg_alloc_security, struct msg_msg *msg) > LSM_HOOK(void, LSM_RET_VOID, msg_msg_free_security, struct msg_msg *msg) > LSM_HOOK(int, 0, msg_queue_alloc_security, struct kern_ipc_perm *perm) > diff --git a/include/linux/security.h b/include/linux/security.h > index a0b23b6e8734..ebe8edaae953 100644 > --- a/include/linux/security.h > +++ b/include/linux/security.h > @@ -290,6 +290,17 @@ static inline bool lsmblob_is_set(struct lsmblob *blob) > return !!memcmp(blob, &empty, sizeof(*blob)); > } > > +/** > + * lsmblob_init - initialize a lsmblob structure > + * @blob: Pointer to the data to initialize > + * > + * Set all secid for all modules to the specified value. > + */ > +static inline void lsmblob_init(struct lsmblob *blob) > +{ > + memset(blob, 0, sizeof(*blob)); > +} > + > #ifdef CONFIG_SECURITY Once again, I think we may want a !CONFIG_SECURITY variant too. -- paul-moore.com
