[libvirt] [PATCH 3/3] networkxml2conftest: Fix build on BSD
Roman Bogorodskiy
bogorodskiy at gmail.com
Sun Jan 1 08:35:02 UTC 2017
Martin Kletzander wrote:
> On Fri, Dec 30, 2016 at 05:06:40PM +0100, Martin Kletzander wrote:
> >On Fri, Dec 30, 2016 at 04:00:21PM +0400, Roman Bogorodskiy wrote:
> >> Martin Kletzander wrote:
> >>
> >>> Yet another way to fix the different loopback naming. This variant
> >>> doesn't use multiple files, allows easy addition of more loopback
> >>> names and factoring out the naming code to a function (which would
> >>> programmatically get the loopback interface name) is very easy. OTOH
> >>> we lose a way to regenerate the files (well, the *easy* way).
> >>>
> >>> Signed-off-by: Martin Kletzander <mkletzan at redhat.com>
> >>> ---
> >>>
> >>> Notes:
> >>> The build is *NOT* tested on any non-Linux patch after this change. I
> >>> feel like it's easier for someone else to try it out than for me to
> >>> spin up a new VM, install FreeBSD, figure out what's needed for
> >>> building libvirt there and all that during the holidays.
> >>
> >>This sounds like a process with a very high entertainment value. :-)
> >>
> >
> >I know, it's not like I haven't done that few times =D
> >
> >>Unfortunately, I have a FreeBSD installation already, so... spoiler
> >>alert, test results are below.
> >>
> >>> So please, if someone is bored out of their mind, feel free to test it
> >>> out ;)
> >>>
> >>> tests/networkxml2confdata/dhcp6-nat-network.conf | 2 +-
> >>> tests/networkxml2confdata/dhcp6-network.conf | 2 +-
> >>> .../dhcp6host-routed-network.conf | 2 +-
> >>> tests/networkxml2confdata/isolated-network.conf | 2 +-
> >>> .../nat-network-dns-forward-plain.conf | 2 +-
> >>> .../nat-network-dns-forwarders.conf | 2 +-
> >>> .../networkxml2confdata/nat-network-dns-hosts.conf | 2 +-
> >>> .../nat-network-dns-local-domain.conf | 2 +-
> >>> .../nat-network-dns-srv-record-minimal.conf | 2 +-
> >>> .../nat-network-dns-srv-record.conf | 2 +-
> >>> .../nat-network-dns-txt-record.conf | 2 +-
> >>> .../nat-network-name-with-quotes.conf | 2 +-
> >>> tests/networkxml2confdata/nat-network.conf | 2 +-
> >>> tests/networkxml2confdata/netboot-network.conf | 2 +-
> >>> .../networkxml2confdata/netboot-proxy-network.conf | 2 +-
> >>> tests/networkxml2confdata/open-network.conf | 2 +-
> >>> tests/networkxml2confdata/ptr-domains-auto.conf | 2 +-
> >>> .../networkxml2confdata/routed-network-no-dns.conf | 2 +-
> >>> tests/networkxml2confdata/routed-network.conf | 2 +-
> >>> tests/networkxml2conftest.c | 41 ++++++++++++++++++++--
> >>> 20 files changed, 58 insertions(+), 21 deletions(-)
> >>>
> >>> diff --git a/tests/networkxml2conftest.c b/tests/networkxml2conftest.c
> >>> index 7ff243b98d20..8ff2c0d33d34 100644
> >>> --- a/tests/networkxml2conftest.c
> >>> +++ b/tests/networkxml2conftest.c
> >>> @@ -19,15 +19,25 @@
> >>> #define VIR_FROM_THIS VIR_FROM_NONE
> >>>
> >>> static int
> >>> -testCompareXMLToConfFiles(const char *inxml, const char *outconf, dnsmasqCapsPtr caps)
> >>> +testCompareXMLToConfFiles(const char *inxml,
> >>> + const char *outconf,
> >>> + dnsmasqCapsPtr caps)
> >>> {
> >>> char *actual = NULL;
> >>> + char *expected = NULL;
> >>> int ret = -1;
> >>> virNetworkDefPtr dev = NULL;
> >>> virNetworkObjPtr obj = NULL;
> >>> virCommandPtr cmd = NULL;
> >>> char *pidfile = NULL;
> >>> dnsmasqContext *dctx = NULL;
> >>> + const char *loopback_name = "lo";
> >>> + const char *loopback_placeholder = "@LOOPBACK_NAME@";
> >>> + char *tmp = NULL;
> >>> +
> >>> +#ifndef __linux__
> >>> + loname = "lo0";
> >> ^^^^^^
> >> should be 'loopback_name'.
> >>
> >
> >🤦 so few rounds of refactoring will not be hidden under the covers.
> >OK, OK, I admit I didn't write it in one go =D
> >
> >>After that I have networkxml2conftest runs smoothly for me.
> >>
> >
> >Great!
> >
> >>> +#endif
> >>>
> >>> if (!(dev = virNetworkDefParseFile(inxml)))
> >>> goto fail;
> >>> @@ -45,13 +55,40 @@ testCompareXMLToConfFiles(const char *inxml, const char *outconf, dnsmasqCapsPtr
> >>> dctx, caps) < 0)
> >>> goto fail;
> >>>
> >>> - if (virTestCompareToFile(actual, outconf) < 0)
> >>> + /* Regeneration option is sacrificed so that we can have one file for both
> >>> + * Linux and non-Linux outputs */
> >>> + if (virTestLoadFile(outconf, &expected) < 0)
> >>> goto fail;
> >>>
> >>> + tmp = strstr(expected, loopback_placeholder);
> >>> + if (tmp) {
> >>> + size_t placeholder_len = strlen(loopback_placeholder);
> >>> + size_t loname_len = strlen(loopback_name);
> >>> +
> >>> + if (loname_len > placeholder_len) {
> >>> + fprintf(stderr, "%s", "Increase the loopback placeholder size");
> >>> + goto fail;
> >>> + }
> >>> +
> >>> + if (!virStrncpy(tmp, loopback_name, strlen(loopback_name), strlen(tmp)))
> >>> + goto fail;
> >>> +
> >>> + memmove(tmp + loname_len, tmp + placeholder_len,
> >>> + strlen(tmp + placeholder_len) + 1);
> >>> + }
> >>> +
> >>> + if (STRNEQ_NULLABLE(actual, expected)) {
> >>> + virTestDifferenceFullNoRegenerate(stderr,
> >>> + expected, outconf,
> >>> + actual, NULL);
> >>> + goto fail;
> >>> + }
> >>> +
> >>> ret = 0;
> >>>
> >>> fail:
> >>> VIR_FREE(actual);
> >>> + VIR_FREE(expected);
> >>> VIR_FREE(pidfile);
> >>> virCommandFree(cmd);
> >>> virObjectUnref(obj);
> >>
> >>Out of curiosity, can we use virStringReplace() here? I still have this
> >
> >8-0 We have that? I feel like I should've known... Or at least
> >should've tried looking for it.
> >
> >>working with the following change (along with the loname fix):
> >>
> >
> >Perfect. ACK to your version if you're OK with it as well (the only
> >ACKs I've found in this mail are in the 'LOOPBACK' placeholder ;)), then
> >feel free to push it since you have the working commit handy.
> >
>
> No rush, I see Michal has yet another proposal for this that we haven't
> considered and even though there are somedrawbacks to that as well, it
> looks nicer than this.
>
> After all the ideas I'm starting to like the "gross" one the best. Oh
> my =)
>
> >Martin
My vote still goes to this solution, because having a placeholder seems
more explicit and easier to follow than doing s/lo/lo0/ directly.
Roman Bogorodskiy
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