diff options
| author | Andreas Gruenbacher <agruen@linbit.com> | 2010-12-15 17:04:36 +0100 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2012-11-08 16:44:30 +0100 |
| commit | fb708e408f0d75953114be66bdbeb9065ca09a33 (patch) | |
| tree | fe2fca0495a231f3658a5dc0eac19b6541479b8c /drivers/block | |
| parent | 11b0be28e57fabeb75edfe81a17eddfc484cd9df (diff) | |
| download | lwn-fb708e408f0d75953114be66bdbeb9065ca09a33.tar.gz lwn-fb708e408f0d75953114be66bdbeb9065ca09a33.zip | |
drbd: Add drbd_send_all(): Send an entire buffer
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 3 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_main.c | 18 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index daa4a74da102..0bd8c2a800c2 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1161,6 +1161,9 @@ extern void _tl_add_barrier(struct drbd_tconn *, struct drbd_tl_epoch *); extern void drbd_free_sock(struct drbd_tconn *tconn); extern int drbd_send(struct drbd_tconn *tconn, struct socket *sock, void *buf, size_t size, unsigned msg_flags); +extern int drbd_send_all(struct drbd_tconn *, struct socket *, void *, size_t, + unsigned); + extern int drbd_send_protocol(struct drbd_tconn *tconn); extern int drbd_send_uuids(struct drbd_conf *mdev); extern int drbd_send_uuids_skip_initial_sync(struct drbd_conf *mdev); diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index d4546d038246..7f2afb8115ce 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -1764,6 +1764,24 @@ int drbd_send(struct drbd_tconn *tconn, struct socket *sock, return sent; } +/** + * drbd_send_all - Send an entire buffer + * + * Returns 0 upon success and a negative error value otherwise. + */ +int drbd_send_all(struct drbd_tconn *tconn, struct socket *sock, void *buffer, + size_t size, unsigned msg_flags) +{ + int err; + + err = drbd_send(tconn, sock, buffer, size, msg_flags); + if (err < 0) + return err; + if (err != size) + return -EIO; + return 0; +} + static int drbd_open(struct block_device *bdev, fmode_t mode) { struct drbd_conf *mdev = bdev->bd_disk->private_data; |