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apparmor: update aa_audit_file() to use labels 

Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen 2017-06-09 15:48:20 -07:00
parent 190a95189e
commit 98c3d18232
3 changed files with 18 additions and 9 deletions
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6
security/apparmor/domain.c
View File

@ -518,6 +518,7 @@ int apparmor_bprm_set_creds(struct linux_binprm *bprm)
audit:
error = aa_audit_file(profile, &perms, OP_EXEC, MAY_EXEC, name,
new_profile ? new_profile->base.hname : NULL,
new_profile ? &new_profile->label : NULL,
cond.uid, info, error);
cleanup:
@ -694,7 +695,7 @@ int aa_change_hat(const char *hats[], int count, u64 token, int flags)
audit:
if (!(flags & AA_CHANGE_TEST))
error = aa_audit_file(profile, &perms, OP_CHANGE_HAT,
AA_MAY_CHANGEHAT, NULL, target,
AA_MAY_CHANGEHAT, NULL, target, NULL,
GLOBAL_ROOT_UID, info, error);
out:
@ -802,7 +803,8 @@ int aa_change_profile(const char *fqname, int flags)
audit:
if (!(flags & AA_CHANGE_TEST))
error = aa_audit_file(profile, &perms, op, request, NULL,
fqname, GLOBAL_ROOT_UID, info, error);
fqname, NULL, GLOBAL_ROOT_UID, info,
error);
aa_put_profile(target);
aa_put_label(label);

18
security/apparmor/file.c
View File

@ -75,7 +75,11 @@ static void file_audit_cb(struct audit_buffer *ab, void *va)
from_kuid(&init_user_ns, aad(sa)->fs.ouid));
}
if (aad(sa)->fs.target) {
if (aad(sa)->peer) {
audit_log_format(ab, " target=");
aa_label_xaudit(ab, labels_ns(aad(sa)->label), aad(sa)->peer,
FLAG_VIEW_SUBNS, GFP_ATOMIC);
} else if (aad(sa)->fs.target) {
audit_log_format(ab, " target=");
audit_log_untrustedstring(ab, aad(sa)->fs.target);
}
@ -85,11 +89,11 @@ static void file_audit_cb(struct audit_buffer *ab, void *va)
* aa_audit_file - handle the auditing of file operations
* @profile: the profile being enforced (NOT NULL)
* @perms: the permissions computed for the request (NOT NULL)
* @gfp: allocation flags
* @op: operation being mediated
* @request: permissions requested
* @name: name of object being mediated (MAYBE NULL)
* @target: name of target (MAYBE NULL)
* @tlabel: target label (MAY BE NULL)
* @ouid: object uid
* @info: extra information message (MAYBE NULL)
* @error: 0 if operation allowed else failure error code
@ -98,7 +102,8 @@ static void file_audit_cb(struct audit_buffer *ab, void *va)
*/
int aa_audit_file(struct aa_profile *profile, struct aa_perms *perms,
const char *op, u32 request, const char *name,
const char *target, kuid_t ouid, const char *info, int error)
const char *target, struct aa_label *tlabel,
kuid_t ouid, const char *info, int error)
{
int type = AUDIT_APPARMOR_AUTO;
DEFINE_AUDIT_DATA(sa, LSM_AUDIT_DATA_TASK, op);
@ -107,6 +112,7 @@ int aa_audit_file(struct aa_profile *profile, struct aa_perms *perms,
aad(&sa)->request = request;
aad(&sa)->name = name;
aad(&sa)->fs.target = target;
aad(&sa)->peer = tlabel;
aad(&sa)->fs.ouid = ouid;
aad(&sa)->info = info;
aad(&sa)->error = error;
@ -139,7 +145,7 @@ int aa_audit_file(struct aa_profile *profile, struct aa_perms *perms,
aad(&sa)->request &= ~perms->quiet;
if (!aad(&sa)->request)
return COMPLAIN_MODE(profile) ? 0 : aad(&sa)->error;
return aad(&sa)->error;
}
aad(&sa)->denied = aad(&sa)->request & ~perms->allow;
@ -295,7 +301,7 @@ int aa_path_perm(const char *op, struct aa_profile *profile,
if (request & ~perms.allow)
error = -EACCES;
}
error = aa_audit_file(profile, &perms, op, request, name, NULL,
error = aa_audit_file(profile, &perms, op, request, name, NULL, NULL,
cond->uid, info, error);
put_buffers(buffer);
@ -425,7 +431,7 @@ int aa_path_link(struct aa_profile *profile, struct dentry *old_dentry,
audit:
error = aa_audit_file(profile, &lperms, OP_LINK, request,
lname, tname, cond.uid, info, error);
lname, tname, NULL, cond.uid, info, error);
put_buffers(buffer, buffer2);
return error;

3
security/apparmor/include/file.h
View File

@ -162,7 +162,8 @@ static inline u16 dfa_map_xindex(u16 mask)
int aa_audit_file(struct aa_profile *profile, struct aa_perms *perms,
const char *op, u32 request, const char *name,
const char *target, kuid_t ouid, const char *info, int error);
const char *target, struct aa_label *tlabel, kuid_t ouid,
const char *info, int error);
/**
* struct aa_file_rules - components used for file rule permissions