diff options
Diffstat (limited to 'net')
-rw-r--r-- | net/ceph/cls_lock_client.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/net/ceph/cls_lock_client.c b/net/ceph/cls_lock_client.c index b9233b9..08ada89 100644 --- a/net/ceph/cls_lock_client.c +++ b/net/ceph/cls_lock_client.c @@ -179,6 +179,57 @@ int ceph_cls_break_lock(struct ceph_osd_client *osdc, } EXPORT_SYMBOL(ceph_cls_break_lock); +int ceph_cls_set_cookie(struct ceph_osd_client *osdc, + struct ceph_object_id *oid, + struct ceph_object_locator *oloc, + char *lock_name, u8 type, char *old_cookie, + char *tag, char *new_cookie) +{ + int cookie_op_buf_size; + int name_len = strlen(lock_name); + int old_cookie_len = strlen(old_cookie); + int tag_len = strlen(tag); + int new_cookie_len = strlen(new_cookie); + void *p, *end; + struct page *cookie_op_page; + int ret; + + cookie_op_buf_size = name_len + sizeof(__le32) + + old_cookie_len + sizeof(__le32) + + tag_len + sizeof(__le32) + + new_cookie_len + sizeof(__le32) + + sizeof(u8) + CEPH_ENCODING_START_BLK_LEN; + if (cookie_op_buf_size > PAGE_SIZE) + return -E2BIG; + + cookie_op_page = alloc_page(GFP_NOIO); + if (!cookie_op_page) + return -ENOMEM; + + p = page_address(cookie_op_page); + end = p + cookie_op_buf_size; + + /* encode cls_lock_set_cookie_op struct */ + ceph_start_encoding(&p, 1, 1, + cookie_op_buf_size - CEPH_ENCODING_START_BLK_LEN); + ceph_encode_string(&p, end, lock_name, name_len); + ceph_encode_8(&p, type); + ceph_encode_string(&p, end, old_cookie, old_cookie_len); + ceph_encode_string(&p, end, tag, tag_len); + ceph_encode_string(&p, end, new_cookie, new_cookie_len); + + dout("%s lock_name %s type %d old_cookie %s tag %s new_cookie %s\n", + __func__, lock_name, type, old_cookie, tag, new_cookie); + ret = ceph_osdc_call(osdc, oid, oloc, "lock", "set_cookie", + CEPH_OSD_FLAG_WRITE, cookie_op_page, + cookie_op_buf_size, NULL, NULL); + + dout("%s: status %d\n", __func__, ret); + __free_page(cookie_op_page); + return ret; +} +EXPORT_SYMBOL(ceph_cls_set_cookie); + void ceph_free_lockers(struct ceph_locker *lockers, u32 num_lockers) { int i; |