diff options
| -rw-r--r-- | drivers/s390/crypto/ap_bus.h | 1 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_api.c | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index 8fd5a17bdf99..6a65885f5f43 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -315,6 +315,7 @@ struct ap_perms { unsigned long ioctlm[BITS_TO_LONGS(AP_IOCTLS)]; unsigned long apm[BITS_TO_LONGS(AP_DEVICES)]; unsigned long aqm[BITS_TO_LONGS(AP_DOMAINS)]; + unsigned long adm[BITS_TO_LONGS(AP_DOMAINS)]; }; extern struct ap_perms ap_perms; extern struct mutex ap_perms_mutex; diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 80e2a306709a..5cfe5cf44ba1 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -285,10 +285,53 @@ static ssize_t aqmask_store(struct device *dev, static DEVICE_ATTR_RW(aqmask); +static ssize_t admask_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int i, rc; + struct zcdn_device *zcdndev = to_zcdn_dev(dev); + + if (mutex_lock_interruptible(&ap_perms_mutex)) + return -ERESTARTSYS; + + buf[0] = '0'; + buf[1] = 'x'; + for (i = 0; i < sizeof(zcdndev->perms.adm) / sizeof(long); i++) + snprintf(buf + 2 + 2 * i * sizeof(long), + PAGE_SIZE - 2 - 2 * i * sizeof(long), + "%016lx", zcdndev->perms.adm[i]); + buf[2 + 2 * i * sizeof(long)] = '\n'; + buf[2 + 2 * i * sizeof(long) + 1] = '\0'; + rc = 2 + 2 * i * sizeof(long) + 1; + + mutex_unlock(&ap_perms_mutex); + + return rc; +} + +static ssize_t admask_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int rc; + struct zcdn_device *zcdndev = to_zcdn_dev(dev); + + rc = ap_parse_mask_str(buf, zcdndev->perms.adm, + AP_DOMAINS, &ap_perms_mutex); + if (rc) + return rc; + + return count; +} + +static DEVICE_ATTR_RW(admask); + static struct attribute *zcdn_dev_attrs[] = { &dev_attr_ioctlmask.attr, &dev_attr_apmask.attr, &dev_attr_aqmask.attr, + &dev_attr_admask.attr, NULL }; |