int security_compute_av(security_context_t scon,
security_context_t tcon,
security_class_t tclass,
access_vector_t requested,
struct av_decision *avd)
{
int ret;
security_context_t rscon = scon;
security_context_t rtcon = tcon;
if (context_translations) {
if (trans_to_raw_context(scon, &rscon))
return -1;
if (trans_to_raw_context(tcon, &rtcon)) {
freecon(rscon);
return -1;
}
}
ret = security_compute_av_raw(rscon, rtcon, tclass, requested, avd);
if (context_translations) {
freecon(rscon);
freecon(rtcon);
}
return ret;
}
int setfilecon(const char *path, security_context_t context)
{
int ret;
security_context_t rcontext = context;
if (context_translations && trans_to_raw_context(context, &rcontext))
return -1;
ret = setfilecon_raw(path, rcontext);
if (context_translations)
freecon(rcontext);
return ret;
}
int security_compute_relabel(security_context_t scon,
security_context_t tcon,
security_class_t tclass,
security_context_t *newcon)
{
int ret;
security_context_t rscon = scon;
security_context_t rtcon = tcon;
security_context_t rnewcon;
if (context_translations) {
if (trans_to_raw_context(scon, &rscon))
return -1;
if (trans_to_raw_context(tcon, &rtcon)) {
freecon(rscon);
return -1;
}
}
ret = security_compute_relabel_raw(rscon, rtcon, tclass, &rnewcon);
if (context_translations) {
freecon(rscon);
freecon(rtcon);
if (!ret) {
if (raw_to_trans_context(rnewcon, newcon)) {
*newcon = NULL;
ret = -1;
}
freecon(rnewcon);
}
} else if (!ret)
*newcon = rnewcon;
return ret;
}
int selinux_trans_to_raw_context(const security_context_t trans,
security_context_t * rawp)
{
if (!trans) {
*rawp = NULL;
return 0;
}
__selinux_once(once, init_context_translations);
if (!mls_enabled) {
*rawp = strdup(trans);
goto out;
}
if (prev_t2r_trans && strcmp(prev_t2r_trans, trans) == 0) {
*rawp = strdup(prev_t2r_raw);
} else {
free(prev_t2r_trans);
prev_t2r_trans = NULL;
free(prev_t2r_raw);
prev_t2r_raw = NULL;
if (trans_to_raw_context(trans, rawp))
*rawp = strdup(trans);
if (*rawp) {
prev_t2r_trans = strdup(trans);
if (!prev_t2r_trans)
goto out;
prev_t2r_raw = strdup(*rawp);
if (!prev_t2r_raw) {
free(prev_t2r_trans);
prev_t2r_trans = NULL;
}
}
}
out:
return *rawp ? 0 : -1;
}