[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservati
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper |
Date: |
Tue, 19 Sep 2017 13:50:51 +0100 |
User-agent: |
Mutt/1.8.3 (2017-05-23) |
On Tue, Sep 19, 2017 at 12:24:34PM +0200, Paolo Bonzini wrote:
> This adds a concrete subclass of pr-manager that talks to qemu-pr-helper.
>
> Signed-off-by: Paolo Bonzini <address@hidden>
> ---
> v1->v2: fixed string property double-free
> fixed/cleaned up error handling
> handle buffer underrun
>
> scsi/Makefile.objs | 2 +-
> scsi/pr-manager-helper.c | 302
> +++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 303 insertions(+), 1 deletion(-)
> create mode 100644 scsi/pr-manager-helper.c
>
> diff --git a/scsi/Makefile.objs b/scsi/Makefile.objs
> index 5496d2ae6a..4d25e476cf 100644
> --- a/scsi/Makefile.objs
> +++ b/scsi/Makefile.objs
> @@ -1,3 +1,3 @@
> block-obj-y += utils.o
>
> -block-obj-$(CONFIG_LINUX) += pr-manager.o
> +block-obj-$(CONFIG_LINUX) += pr-manager.o pr-manager-helper.o
> diff --git a/scsi/pr-manager-helper.c b/scsi/pr-manager-helper.c
> new file mode 100644
> index 0000000000..063fd35dee
> --- /dev/null
> +++ b/scsi/pr-manager-helper.c
> +/* Called with lock held. */
> +static int pr_manager_helper_read(PRManagerHelper *pr_mgr,
> + void *buf, int sz, Error **errp)
> +{
> + ssize_t r = qio_channel_read_all(pr_mgr->ioc, buf, sz, errp);
The return value isn't ssize_t - it just returns 0 on success, -1 on
error, never a bytes count since it always reads all requested bytes
and treats EOF as an error condition.
> +
> + if (r < 0) {
> + object_unref(OBJECT(pr_mgr->ioc));
> + pr_mgr->ioc = NULL;
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
Regards,
Daniel
--
|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org -o- https://fstop138.berrange.com :|
|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
- [Qemu-block] [PATCH v2 0/4] scsi, block: introduce persistent reservation managers, Paolo Bonzini, 2017/09/19
- [Qemu-block] [PATCH 3/4] scsi: add multipath support to qemu-pr-helper, Paolo Bonzini, 2017/09/19
- [Qemu-block] [PATCH 2/4] scsi: build qemu-pr-helper, Paolo Bonzini, 2017/09/19
- [Qemu-block] [PATCH 1/4] scsi, file-posix: add support for persistent reservation management, Paolo Bonzini, 2017/09/19
- [Qemu-block] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper, Paolo Bonzini, 2017/09/19
- Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper,
Daniel P. Berrange <=
- Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper, Daniel P. Berrange, 2017/09/19
- Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper, Paolo Bonzini, 2017/09/19
- Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper, Daniel P. Berrange, 2017/09/19
- Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper, Paolo Bonzini, 2017/09/19
- Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper, Daniel P. Berrange, 2017/09/19
- Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper, Paolo Bonzini, 2017/09/19
- Re: [Qemu-block] [Qemu-devel] [PATCH 4/4] scsi: add persistent reservation manager using qemu-pr-helper, Paolo Bonzini, 2017/09/21
Re: [Qemu-block] [PATCH v2 0/4] scsi, block: introduce persistent reservation managers, Stefan Hajnoczi, 2017/09/21
Re: [Qemu-block] [Qemu-devel] [PATCH v2 0/4] scsi, block: introduce persistent reservation managers, no-reply, 2017/09/21
Re: [Qemu-block] [Qemu-devel] [PATCH v2 0/4] scsi, block: introduce persistent reservation managers, no-reply, 2017/09/21