diff options
Diffstat (limited to 'drivers/s390/crypto/zcrypt_api.c')
| -rw-r--r-- | drivers/s390/crypto/zcrypt_api.c | 70 |
1 files changed, 25 insertions, 45 deletions
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c index 6fe05bb82c77..444ef95d3f59 100644 --- a/drivers/s390/crypto/zcrypt_api.c +++ b/drivers/s390/crypto/zcrypt_api.c @@ -159,25 +159,20 @@ static ssize_t ioctlmask_show(struct device *dev, struct device_attribute *attr, char *buf) { - int i, rc; struct zcdn_device *zcdndev = to_zcdn_dev(dev); + int i, n; if (mutex_lock_interruptible(&ap_perms_mutex)) return -ERESTARTSYS; - buf[0] = '0'; - buf[1] = 'x'; + n = sysfs_emit(buf, "0x"); for (i = 0; i < sizeof(zcdndev->perms.ioctlm) / sizeof(long); i++) - snprintf(buf + 2 + 2 * i * sizeof(long), - PAGE_SIZE - 2 - 2 * i * sizeof(long), - "%016lx", zcdndev->perms.ioctlm[i]); - buf[2 + 2 * i * sizeof(long)] = '\n'; - buf[2 + 2 * i * sizeof(long) + 1] = '\0'; - rc = 2 + 2 * i * sizeof(long) + 1; + n += sysfs_emit_at(buf, n, "%016lx", zcdndev->perms.ioctlm[i]); + n += sysfs_emit_at(buf, n, "\n"); mutex_unlock(&ap_perms_mutex); - return rc; + return n; } static ssize_t ioctlmask_store(struct device *dev, @@ -201,25 +196,20 @@ static ssize_t apmask_show(struct device *dev, struct device_attribute *attr, char *buf) { - int i, rc; struct zcdn_device *zcdndev = to_zcdn_dev(dev); + int i, n; if (mutex_lock_interruptible(&ap_perms_mutex)) return -ERESTARTSYS; - buf[0] = '0'; - buf[1] = 'x'; + n = sysfs_emit(buf, "0x"); for (i = 0; i < sizeof(zcdndev->perms.apm) / sizeof(long); i++) - snprintf(buf + 2 + 2 * i * sizeof(long), - PAGE_SIZE - 2 - 2 * i * sizeof(long), - "%016lx", zcdndev->perms.apm[i]); - buf[2 + 2 * i * sizeof(long)] = '\n'; - buf[2 + 2 * i * sizeof(long) + 1] = '\0'; - rc = 2 + 2 * i * sizeof(long) + 1; + n += sysfs_emit_at(buf, n, "%016lx", zcdndev->perms.apm[i]); + n += sysfs_emit_at(buf, n, "\n"); mutex_unlock(&ap_perms_mutex); - return rc; + return n; } static ssize_t apmask_store(struct device *dev, @@ -243,25 +233,20 @@ static ssize_t aqmask_show(struct device *dev, struct device_attribute *attr, char *buf) { - int i, rc; struct zcdn_device *zcdndev = to_zcdn_dev(dev); + int i, n; if (mutex_lock_interruptible(&ap_perms_mutex)) return -ERESTARTSYS; - buf[0] = '0'; - buf[1] = 'x'; + n = sysfs_emit(buf, "0x"); for (i = 0; i < sizeof(zcdndev->perms.aqm) / sizeof(long); i++) - snprintf(buf + 2 + 2 * i * sizeof(long), - PAGE_SIZE - 2 - 2 * i * sizeof(long), - "%016lx", zcdndev->perms.aqm[i]); - buf[2 + 2 * i * sizeof(long)] = '\n'; - buf[2 + 2 * i * sizeof(long) + 1] = '\0'; - rc = 2 + 2 * i * sizeof(long) + 1; + n += sysfs_emit_at(buf, n, "%016lx", zcdndev->perms.aqm[i]); + n += sysfs_emit_at(buf, n, "\n"); mutex_unlock(&ap_perms_mutex); - return rc; + return n; } static ssize_t aqmask_store(struct device *dev, @@ -285,25 +270,20 @@ 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); + int i, n; if (mutex_lock_interruptible(&ap_perms_mutex)) return -ERESTARTSYS; - buf[0] = '0'; - buf[1] = 'x'; + n = sysfs_emit(buf, "0x"); 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; + n += sysfs_emit_at(buf, n, "%016lx", zcdndev->perms.adm[i]); + n += sysfs_emit_at(buf, n, "\n"); mutex_unlock(&ap_perms_mutex); - return rc; + return n; } static ssize_t admask_store(struct device *dev, @@ -340,8 +320,8 @@ static const struct attribute_group *zcdn_dev_attr_groups[] = { NULL }; -static ssize_t zcdn_create_store(struct class *class, - struct class_attribute *attr, +static ssize_t zcdn_create_store(const struct class *class, + const struct class_attribute *attr, const char *buf, size_t count) { int rc; @@ -357,8 +337,8 @@ static ssize_t zcdn_create_store(struct class *class, static const struct class_attribute class_attr_zcdn_create = __ATTR(create, 0600, NULL, zcdn_create_store); -static ssize_t zcdn_destroy_store(struct class *class, - struct class_attribute *attr, +static ssize_t zcdn_destroy_store(const struct class *class, + const struct class_attribute *attr, const char *buf, size_t count) { int rc; @@ -2171,7 +2151,7 @@ static int __init zcdn_init(void) int rc; /* create a new class 'zcrypt' */ - zcrypt_class = class_create(THIS_MODULE, ZCRYPT_NAME); + zcrypt_class = class_create(ZCRYPT_NAME); if (IS_ERR(zcrypt_class)) { rc = PTR_ERR(zcrypt_class); goto out_class_create_failed; |