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SELinux: more user friendly unknown handling printk

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I've gotten complaints and reports about people not understanding the
meaning of the current unknown class/perm handling the kernel emits on
every policy load.  Hopefully this will make make it clear to everyone
the meaning of the message and won't waste a printk the user won't care
about anyway on systems where the kernel and the policy agree on
everything.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Eric Paris 2008-06-09 16:51:37 -04:00 committed by James Morris
parent 22df4adb04
commit 6cbe27061a
2 changed files with 7 additions and 5 deletions
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5
security/selinux/selinuxfs.c
View file

@ -356,11 +356,6 @@ static ssize_t sel_write_load(struct file *file, const char __user *buf,
length = count;
out1:
printk(KERN_INFO "SELinux: policy loaded with handle_unknown=%s\n",
(security_get_reject_unknown() ? "reject" :
(security_get_allow_unknown() ? "allow" : "deny")));
audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_POLICY_LOAD,
"policy loaded auid=%u ses=%u",
audit_get_loginuid(current),

7
security/selinux/ss/services.c
View file

@ -1171,6 +1171,7 @@ static int validate_classes(struct policydb *p)
const struct selinux_class_perm *kdefs = &selinux_class_perm;
const char *def_class, *def_perm, *pol_class;
struct symtab *perms;
bool print_unknown_handle = 0;
if (p->allow_unknown) {
u32 num_classes = kdefs->cts_len;
@ -1191,6 +1192,7 @@ static int validate_classes(struct policydb *p)
return -EINVAL;
if (p->allow_unknown)
p->undefined_perms[i-1] = ~0U;
print_unknown_handle = 1;
continue;
}
pol_class = p->p_class_val_to_name[i-1];
@ -1220,6 +1222,7 @@ static int validate_classes(struct policydb *p)
return -EINVAL;
if (p->allow_unknown)
p->undefined_perms[class_val-1] |= perm_val;
print_unknown_handle = 1;
continue;
}
perdatum = hashtab_search(perms->table, def_perm);
@ -1267,6 +1270,7 @@ static int validate_classes(struct policydb *p)
return -EINVAL;
if (p->allow_unknown)
p->undefined_perms[class_val-1] |= (1 << j);
print_unknown_handle = 1;
continue;
}
perdatum = hashtab_search(perms->table, def_perm);
@ -1284,6 +1288,9 @@ static int validate_classes(struct policydb *p)
}
}
}
if (print_unknown_handle)
printk(KERN_INFO "SELinux: the above unknown classes and permissions will be %s\n",
(security_get_allow_unknown() ? "allowed" : "denied"));
return 0;
}