err = -ENOENT;
break;
case H_BUSY:
+ case H_LONG_BUSY_ORDER_1_MSEC:
+ case H_LONG_BUSY_ORDER_10_MSEC:
+ case H_LONG_BUSY_ORDER_100_MSEC:
+ case H_LONG_BUSY_ORDER_1_SEC:
+ case H_LONG_BUSY_ORDER_10_SEC:
+ case H_LONG_BUSY_ORDER_100_SEC:
err = -EBUSY;
break;
case H_AUTHORITY:
u16 namelen)
{
struct label *label;
- size_t slen;
+ size_t slen = 0;
if (!name || namelen > PLPKS_MAX_NAME_SIZE)
return ERR_PTR(-EINVAL);
- slen = strlen(component);
- if (component && slen > sizeof(label->attr.prefix))
- return ERR_PTR(-EINVAL);
+ // Support NULL component for signed updates
+ if (component) {
+ slen = strlen(component);
+ if (slen > sizeof(label->attr.prefix))
+ return ERR_PTR(-EINVAL);
+ }
// The label structure must not cross a page boundary, so we align to the next power of 2
label = kzalloc(roundup_pow_of_two(sizeof(*label)), GFP_KERNEL);
return pseries_status_to_err(rc);
}
+int plpks_signed_update_var(struct plpks_var *var, u64 flags)
+{
+ unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = {0};
+ int rc;
+ struct label *label;
+ struct plpks_auth *auth;
+ u64 continuetoken = 0;
+ u64 timeout = 0;
+
+ if (!var->data || var->datalen <= 0 || var->namelen > PLPKS_MAX_NAME_SIZE)
+ return -EINVAL;
+
+ if (!(var->policy & PLPKS_SIGNEDUPDATE))
+ return -EINVAL;
+
+ // Signed updates need the component to be NULL.
+ if (var->component)
+ return -EINVAL;
+
+ auth = construct_auth(PLPKS_OS_OWNER);
+ if (IS_ERR(auth))
+ return PTR_ERR(auth);
+
+ label = construct_label(var->component, var->os, var->name, var->namelen);
+ if (IS_ERR(label)) {
+ rc = PTR_ERR(label);
+ goto out;
+ }
+
+ do {
+ rc = plpar_hcall9(H_PKS_SIGNED_UPDATE, retbuf,
+ virt_to_phys(auth), virt_to_phys(label),
+ label->size, var->policy, flags,
+ virt_to_phys(var->data), var->datalen,
+ continuetoken);
+
+ continuetoken = retbuf[0];
+ if (pseries_status_to_err(rc) == -EBUSY) {
+ int delay_ms = get_longbusy_msecs(rc);
+ mdelay(delay_ms);
+ timeout += delay_ms;
+ }
+ rc = pseries_status_to_err(rc);
+ } while (rc == -EBUSY && timeout < PLPKS_MAX_TIMEOUT);
+
+ if (!rc)
+ rc = plpks_confirm_object_flushed(label, auth);
+
+ kfree(label);
+out:
+ kfree(auth);
+
+ return rc;
+}
+
int plpks_write_var(struct plpks_var var)
{
unsigned long retbuf[PLPAR_HCALL_BUFSIZE] = { 0 };
struct label *label;
int rc;
- if (!component || vname.namelen > PLPKS_MAX_NAME_SIZE)
+ if (vname.namelen > PLPKS_MAX_NAME_SIZE)
return -EINVAL;
auth = construct_auth(PLPKS_OS_OWNER);