I'm unclear on the internal stacking for SELinux. Some of them make sense
from the perpsective of working with capablities, specifically these:
rc = secondary_ops->ptrace(parent,child);
return secondary_ops->capget(target, effective, inheritable, permitted); error = secondary_ops->capset_check(target, effective, inheritable, permitted);
secondary_ops->capset_set(target, effective, inheritable, permitted);
rc = secondary_ops->capable(tsk, cap);
rc = secondary_ops->syslog(type);
rc = secondary_ops->capable(current, CAP_SYS_ADMIN); /* for vm_enough_memory */
rc = secondary_ops->bprm_set_security(bprm);
return (atsecure || secondary_ops->bprm_secureexec(bprm));
secondary_ops->bprm_apply_creds(bprm, unsafe);
err = secondary_ops->netlink_send(sk, skb);
(not exactly using netlink_recv)
return secondary_ops->task_post_setuid(id0,id1,id2,flags);
secondary_ops->task_reparent_to_init(p);
not using cap:
cap_settime (obviously)
cap_inode_setxattr (makes sense)
cap_inode_removexattr (makes sense)
cap_vm_enough_memory (makes sense)
These are no-ops in dummy or capabilities, but don't represent the rest
of the hooks, or the rest in a single object area (i.e. task or inode).
Looks like (from discussion in early May) they were added to help stack
with grsec and something else?
rc = secondary_ops->sysctl(table, op);
return secondary_ops->bprm_check_security(bprm);
rc = secondary_ops->sb_mount(dev_name, nd, type, flags, data);
rc = secondary_ops->sb_umount(mnt, flags);
rc = secondary_ops->inode_link(old_dentry,dir,new_dentry); /* maybe owlsm? */
rc = secondary_ops->inode_unlink(dir, dentry);
rc = secondary_ops->inode_mknod(dir, dentry, mode, dev);
rc = secondary_ops->inode_follow_link(dentry,nameidata); /* maybe owlsm? */
rc = secondary_ops->inode_permission(inode, mask, nd);
rc = secondary_ops->inode_setattr(dentry, iattr);
rc = secondary_ops->file_mmap(file, reqprot, prot, flags); /* maybe digsig? */
rc = secondary_ops->file_mprotect(vma, reqprot, prot); /* maybe digsig? */
rc = secondary_ops->task_create(clone_flags);
rc = secondary_ops->task_setnice(p, nice);
rc = secondary_ops->task_setrlimit(resource, new_rlim);
rc = secondary_ops->task_kill(p, info, sig);
err = secondary_ops->unix_stream_connect(sock, other, newsk);
rc = secondary_ops->shm_shmat(shp, shmaddr, shmflg);
Would it make more sense to directly use cap_* as library functions,
and drop the whole ad-hoc internal stacking?
This archive was generated by hypermail 2.1.3 : Thu Aug 25 2005 - 15:17:56 PDT