[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v2 1/7] block/ssh: don't call libssh2_init() in
From: |
Richard W.M. Jones |
Subject: |
Re: [Qemu-devel] [PATCH v2 1/7] block/ssh: don't call libssh2_init() in block_init() |
Date: |
Thu, 31 Aug 2017 08:46:20 +0100 |
User-agent: |
Mutt/1.5.20 (2009-12-10) |
On Wed, Aug 30, 2017 at 02:40:16PM -0500, Eric Blake wrote:
> On 08/30/2017 11:56 AM, Jeff Cody wrote:
> > We don't need libssh2 failure to be fatal (we could just opt to not
> > register the driver on failure). But, it is probably a good idea to
> > avoid external library calls during the block_init(), and call the
> > libssh2 global init function on the first usage, returning any errors.
> >
> > Signed-off-by: Jeff Cody <address@hidden>
> > ---
> > block/ssh.c | 40 +++++++++++++++++++++++++++++-----------
> > 1 file changed, 29 insertions(+), 11 deletions(-)
> >
>
> > +static int ssh_state_init(BDRVSSHState *s, Error **errp)
> > {
> > + int ret;
> > +
> > + if (!ssh_libinit_called) {
> > + ret = libssh2_init(0);
> > + if (ret) {
> > + error_setg(errp, "libssh2 initialization failed with %d", ret);
> > + return ret;
>
> Do we know if this number is always positive or negative?
FWIW documentation says:
"Returns 0 if succeeded, or a negative value for error."
I was holding off on reviewing this patch in general since there's a
libssh-based alternative driver under development, which should be
better.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v
- [Qemu-devel] [PATCH v2 0/7] Code cleanup and minor fixes, Jeff Cody, 2017/08/30
- [Qemu-devel] [PATCH v2 6/7] block/curl: fix minor memory leaks, Jeff Cody, 2017/08/30
- [Qemu-devel] [PATCH v2 2/7] block/ssh: make compliant with coding guidelines, Jeff Cody, 2017/08/30
- [Qemu-devel] [PATCH v2 5/7] block/curl: check error return of curl_global_init(), Jeff Cody, 2017/08/30
- [Qemu-devel] [PATCH v2 3/7] block/sheepdog: remove spurious NULL check, Jeff Cody, 2017/08/30
- [Qemu-devel] [PATCH v2 4/7] block/sheepdog: code beautification, Jeff Cody, 2017/08/30