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During testing of my patch v6.10.0-rc1~221 it was found that
'ovs-vsctl get Interface $name name' or
'ovs-vsctl find Interface options:vhost-server-path=$path'
may return a string in double quotes, e.g. "vhost-user1". Later
investigation of openvswitch code showed, that early versions
(like 1.3.0) have somewhat restrictive set of safe characters
(isalpha() || '_' || '-' || '.'), which is then refined with
increasing version. For instance, version 2.11.4 has: isalnum()
|| '_' || '-' || '.'. If the string that ovs-vsctl wants to
output contains any other character it is escaped. You want to be
looking at ovsdb_atom_to_string() which handles outputting of a
single string and calls string_needs_quotes() and possibly
json_serialize_string() in openvswitch code base.
Since the interfaces are usually named "vhost-userN" we are
facing a problem where with one version we get the name in double
quotes and with another we get plain name without funny business.
Because of json involved I thought, let's make ovs-vsctl output
into JSON format and then use our JSON parser, but guess what -
ovs-vsctl ignores --format=json. But with a little help of
g_strdup_printf() it can be turned into JSON.
Fixes: e4c29e2904
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1767013
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Laine Stump <laine@redhat.com>
75 lines
3.0 KiB
C
75 lines
3.0 KiB
C
/*
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* Copyright (C) 2013 Red Hat, Inc.
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* Copyright (C) 2012 Nicira, Inc.
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* Copyright (C) 2017 IBM Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "internal.h"
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#include "virnetdevvportprofile.h"
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#include "virnetdevvlan.h"
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#define VIR_NETDEV_OVS_DEFAULT_TIMEOUT 5
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void virNetDevOpenvswitchSetTimeout(unsigned int timeout);
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int virNetDevOpenvswitchAddPort(const char *brname,
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const char *ifname,
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const virMacAddr *macaddr,
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const unsigned char *vmuuid,
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const virNetDevVPortProfile *ovsport,
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const virNetDevVlan *virtVlan)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
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G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevOpenvswitchRemovePort(const char *brname, const char *ifname)
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ATTRIBUTE_NONNULL(2) G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevOpenvswitchInterfaceGetMaster(const char *ifname, char **master)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevOpenvswitchGetMigrateData(char **migrate, const char *ifname)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevOpenvswitchSetMigrateData(char *migrate, const char *ifname)
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ATTRIBUTE_NONNULL(2) G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevOpenvswitchInterfaceParseStats(const char *json,
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virDomainInterfaceStatsPtr stats)
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ATTRIBUTE_NONNULL(1) G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevOpenvswitchInterfaceStats(const char *ifname,
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virDomainInterfaceStatsPtr stats)
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ATTRIBUTE_NONNULL(1) G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevOpenvswitchInterfaceGetMaster(const char *ifname, char **master)
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ATTRIBUTE_NONNULL(1) G_GNUC_WARN_UNUSED_RESULT;
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int
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virNetDevOpenvswitchMaybeUnescapeReply(char *reply)
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ATTRIBUTE_NONNULL(1) G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevOpenvswitchGetVhostuserIfname(const char *path,
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bool server,
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char **ifname)
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ATTRIBUTE_NONNULL(3) G_GNUC_WARN_UNUSED_RESULT G_GNUC_NO_INLINE;
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int virNetDevOpenvswitchUpdateVlan(const char *ifname,
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const virNetDevVlan *virtVlan)
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ATTRIBUTE_NONNULL(1) G_GNUC_WARN_UNUSED_RESULT;
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