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apparmor: change aad apparmor_audit_data macro to a fn macro

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The aad macro can replace aad strings when it is not intended to. Switch
to a fn macro so it is only applied when intended.

Also at the same time cleanup audit_data initialization by putting
common boiler plate behind a macro, and dropping the gfp_t parameter
which will become useless.

Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen
2017-01-16 00:43:02 -08:00
parent 47f6e5cc73
commit ef88a7ac55
12 changed files with 153 additions and 159 deletions
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43
security/apparmor/include/audit.h
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@@ -108,34 +108,53 @@ struct apparmor_audit_data {
const char *name;
const char *info;
union {
void *target;
/* these entries require a custom callback fn */
struct {
struct aa_profile *peer;
struct {
const char *target;
u32 request;
u32 denied;
kuid_t ouid;
} fs;
};
struct {
const char *name;
long pos;
const char *ns;
void *target;
} iface;
struct {
int rlim;
unsigned long max;
} rlim;
struct {
const char *target;
u32 request;
u32 denied;
kuid_t ouid;
} fs;
};
};
/* define a short hand for apparmor_audit_data structure */
#define aad apparmor_audit_data
/* macros for dealing with apparmor_audit_data structure */
#define aad(SA) ((SA)->apparmor_audit_data)
#define DEFINE_AUDIT_DATA(NAME, T, X) \
/* TODO: cleanup audit init so we don't need _aad = {0,} */ \
struct apparmor_audit_data NAME ## _aad = { .op = (X), }; \
struct common_audit_data NAME = \
{ \
.type = (T), \
.u.tsk = NULL, \
}; \
NAME.apparmor_audit_data = &(NAME ## _aad)
void aa_audit_msg(int type, struct common_audit_data *sa,
void (*cb) (struct audit_buffer *, void *));
int aa_audit(int type, struct aa_profile *profile, gfp_t gfp,
struct common_audit_data *sa,
int aa_audit(int type, struct aa_profile *profile, struct common_audit_data *sa,
void (*cb) (struct audit_buffer *, void *));
#define aa_audit_error(ERROR, SA, CB) \
({ \
aad((SA))->error = (ERROR); \
aa_audit_msg(AUDIT_APPARMOR_ERROR, (SA), (CB)); \
aad((SA))->error; \
})
static inline int complain_error(int error)
{
if (error == -EPERM || error == -EACCES)