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apparmor: pass the subject profile into profile replace/remove

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This is just setup for new ns specific .load, .replace, .remove interface
files.

Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen 2017-01-16 00:42:57 -08:00
parent 04dc715e24
commit 12dd7171d6
3 changed files with 21 additions and 16 deletions
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5
security/apparmor/apparmorfs.c
View File

@ -133,7 +133,7 @@ static ssize_t policy_update(int binop, const char __user *buf, size_t size,
data = aa_simple_write_to_buffer(op, buf, size, size, pos);
error = PTR_ERR(data);
if (!IS_ERR(data)) {
error = aa_replace_profiles(profile->ns, binop, data);
error = aa_replace_profiles(profile->ns, profile, binop, data);
aa_put_loaddata(data);
}
@ -192,7 +192,8 @@ static ssize_t profile_remove(struct file *f, const char __user *buf,
error = PTR_ERR(data);
if (!IS_ERR(data)) {
data->data[size] = 0;
error = aa_remove_profiles(profile->ns, data->data, size);
error = aa_remove_profiles(profile->ns, profile, data->data,
size);
aa_put_loaddata(data);
}
out:

7
security/apparmor/include/policy.h
View File

@ -188,9 +188,10 @@ struct aa_profile *aa_fqlookupn_profile(struct aa_profile *base,
const char *fqname, size_t n);
struct aa_profile *aa_match_profile(struct aa_ns *ns, const char *name);
ssize_t aa_replace_profiles(struct aa_ns *view, bool noreplace,
struct aa_loaddata *udata);
ssize_t aa_remove_profiles(struct aa_ns *view, char *name, size_t size);
ssize_t aa_replace_profiles(struct aa_ns *view, struct aa_profile *profile,
bool noreplace, struct aa_loaddata *udata);
ssize_t aa_remove_profiles(struct aa_ns *view, struct aa_profile *profile,
char *name, size_t size);
void __aa_profile_list_release(struct list_head *head);
#define PROF_ADD 1

25
security/apparmor/policy.c
View File

@ -803,6 +803,7 @@ static int __lookup_replace(struct aa_ns *ns, const char *hname,
/**
* aa_replace_profiles - replace profile(s) on the profile list
* @view: namespace load is viewed from
* @label: label that is attempting to load/replace policy
* @noreplace: true if only doing addition, no replacement allowed
* @udata: serialized data stream (NOT NULL)
*
@ -812,8 +813,8 @@ static int __lookup_replace(struct aa_ns *ns, const char *hname,
*
* Returns: size of data consumed else error code on failure.
*/
ssize_t aa_replace_profiles(struct aa_ns *view, bool noreplace,
struct aa_loaddata *udata)
ssize_t aa_replace_profiles(struct aa_ns *view, struct aa_profile *profile,
bool noreplace, struct aa_loaddata *udata)
{
const char *ns_name, *info = NULL;
struct aa_ns *ns = NULL;
@ -935,7 +936,7 @@ ssize_t aa_replace_profiles(struct aa_ns *view, bool noreplace,
list_del_init(&ent->list);
op = (!ent->old && !ent->rename) ? OP_PROF_LOAD : OP_PROF_REPL;
audit_policy(__aa_current_profile(), op, GFP_ATOMIC, NULL,
audit_policy(profile, op, GFP_ATOMIC, NULL,
ent->new->base.hname, NULL, error);
if (ent->old) {
@ -991,8 +992,8 @@ ssize_t aa_replace_profiles(struct aa_ns *view, bool noreplace,
/* audit cause of failure */
op = (!ent->old) ? OP_PROF_LOAD : OP_PROF_REPL;
fail:
audit_policy(__aa_current_profile(), op, GFP_KERNEL, ns_name,
ent->new->base.hname, info, error);
audit_policy(profile, op, GFP_KERNEL, ns_name, ent->new->base.hname,
info, error);
/* audit status that rest of profiles in the atomic set failed too */
info = "valid profile in failed atomic policy load";
list_for_each_entry(tmp, &lh, list) {
@ -1002,7 +1003,7 @@ ssize_t aa_replace_profiles(struct aa_ns *view, bool noreplace,
continue;
}
op = (!ent->old) ? OP_PROF_LOAD : OP_PROF_REPL;
audit_policy(__aa_current_profile(), op, GFP_KERNEL, ns_name,
audit_policy(profile, op, GFP_KERNEL, ns_name,
tmp->new->base.hname, info, error);
}
list_for_each_entry_safe(ent, tmp, &lh, list) {
@ -1016,6 +1017,7 @@ ssize_t aa_replace_profiles(struct aa_ns *view, bool noreplace,
/**
* aa_remove_profiles - remove profile(s) from the system
* @view: namespace the remove is being done from
* @subj: profile attempting to remove policy
* @fqname: name of the profile or namespace to remove (NOT NULL)
* @size: size of the name
*
@ -1026,7 +1028,8 @@ ssize_t aa_replace_profiles(struct aa_ns *view, bool noreplace,
*
* Returns: size of data consume else error code if fails
*/
ssize_t aa_remove_profiles(struct aa_ns *view, char *fqname, size_t size)
ssize_t aa_remove_profiles(struct aa_ns *view, struct aa_profile *subj,
char *fqname, size_t size)
{
struct aa_ns *root = NULL, *ns = NULL;
struct aa_profile *profile = NULL;
@ -1075,8 +1078,8 @@ ssize_t aa_remove_profiles(struct aa_ns *view, char *fqname, size_t size)
}
/* don't fail removal if audit fails */
(void) audit_policy(__aa_current_profile(), OP_PROF_RM, GFP_KERNEL,
ns_name, name, info, error);
(void) audit_policy(subj, OP_PROF_RM, GFP_KERNEL, ns_name, name, info,
error);
aa_put_ns(ns);
aa_put_profile(profile);
return size;
@ -1086,7 +1089,7 @@ ssize_t aa_remove_profiles(struct aa_ns *view, char *fqname, size_t size)
aa_put_ns(ns);
fail:
(void) audit_policy(__aa_current_profile(), OP_PROF_RM, GFP_KERNEL,
ns_name, name, info, error);
(void) audit_policy(subj, OP_PROF_RM, GFP_KERNEL, ns_name, name, info,
error);
return error;
}