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* Makefile: Install demo.sh too, uninstall stuff under /usr/shareStefano Brivio2022-08-201-0/+4
| | | | | Suggested-by: Benson Muite <benson_muite@emailplus.org> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* Makefile: Ugly hack to get a "plain" Markdown version of READMEStefano Brivio2022-08-204-6/+30
| | | | | | | | | | | | | | | | | | Distribution packages reasonably expect to have a human-readable Markdown version of the README under /usr/share/doc/, but all we have right now is a heavily web-oriented version. Introduce a ugly hack to strip web-oriented parts from the current README and install it. It should probably work the other way around: a human-readable README could be used as a source for the web page. But cgit needs a file that's in the tree, not something that can be built, and https://passt.top/ is based on cgit. It should eventually be doable to work around this in cgit, instead. Reported-by: Benson Muite <benson_muite@emailplus.org> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* README: Add link to Copr repositoriesStefano Brivio2022-08-181-0/+8
| | | | | | | These have packages covering all recent versions of CentOS Stream, EPEL, Fedora, Mageia and OpenSUSE Tumbleweed. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* doc: Rewrite demo scriptStefano Brivio2022-08-182-125/+244
| | | | | | | | | | | | | | | The original demo script was written when pasta wasn't a thing yet, so it needed to run as root, set up a veth pair, and configure addresses and routes by itself. Now pasta can do all that for us, and become part of the demo as well. Further, extend it to start qemu, optionally preparing a basic demo image with mbuto (https://mbuto.sh), and execute one logical step at a time, for clarity. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* contrib, test: Rebase Podman patch, enable three-way merge on git am in demo2022_08_04.b516d15Stefano Brivio2022-08-012-17/+17
| | | | | | | | Given that a three-way git merge was enough to cope with context changes in man pages, it's probably a good idea to enable that for 'git am' in the demo too. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* passt.1: Default host interfaces are now selected based on IP versionStefano Brivio2022-07-301-6/+7
| | | | | | | Reflect the changes from commit 4b2e018d70f3 ("Allow different external interfaces for IPv4 and IPv6 connectivity") into the manual. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* Make substructures for IPv4 and IPv6 specific context informationDavid Gibson2022-07-3012-212/+232
| | | | | | | | | | | | The context structure contains a batch of fields specific to IPv4 and to IPv6 connectivity. Split those out into a sub-structure. This allows the conf_ip4() and conf_ip6() functions, which take the entire context but touch very little of it, to be given more specific parameters, making it clearer what it affects without stepping through the code. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* Separate IPv4 and IPv6 configurationDavid Gibson2022-07-307-94/+102
| | | | | | | | | | | | | | | | | | | After recent changes, conf_ip() now has essentially entirely disjoint paths for IPv4 and IPv6 configuration. So, it's cleaner to split them out into different functions conf_ip4() and conf_ip6(). Splitting these out also lets us make the interface a bit nicer, having them return success or failure directly, rather than manipulating c->v4 and c->v6 to indicate success/failure of the two versions. Since these functions may also initialize the interface index for each protocol, it turns out we can then drop c->v4 and c->v6 entirely, replacing tests on those with tests on whether c->ifi4 or c->ifi6 is non-zero (since a 0 interface index is never valid). Signed-off-by: David Gibson <david@gibson.dropbear.id.au> [sbrivio: Whitespace fixes] Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* Clarify semantics of c->v4 and c->v6 variablesDavid Gibson2022-07-302-45/+20
| | | | | | | | | | | | | | | | | | | | | The v4 and v6 fields of the context structure can be confusing, because they change meaning part way through the code: Before conf_ip(), they are booleans which indicate whether the -4 or -6 options have been given. After conf_ip() they are DISABLED|ENABLED|PROBE enums which indicate whether the IP version is available (which means both that it was allowed on the command line and we were able to configure it). The PROBE variant of the enum is only used locally within conf_ip() and since recent changes there it no longer has a real purpose different from ENABLED. Simplify this all by making the context fields always just a boolean indicating the availability of the IP version. They both default to 1, but can be set to 0 by either command line options or configuration failures. We use some local variables in conf() for tracking the state of the command line options on their own. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> [sbrivio: Minor coding style fix in conf.c] Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* Move passt mac_guest init to be more symmetric with pastaDavid Gibson2022-07-302-3/+6
| | | | | | | | | | | | | | | | | In pasta mode, the guest's MAC address is set up in pasta_ns_cobf() called from tap_sock_tun_init(). If we have a guest MAC configured with --ns-mac-addr, this will set the given MAC on the kernel tuntap device, or if we haven't configured one it will update our record of the guest MAC to the kernel assigned one from the device. For passt, we don't initially know the guest's MAC until we receive packets from it, so we have to initially use a broadcast address. This is - oddly - set up in an entirely different place, in conf_ip() conditional on the mode. Move it to the logically matching place for passt - tap_sock_unix_init(). Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* Initialize host side MAC when in IPv6 only modeDavid Gibson2022-07-301-9/+12
| | | | | | | | | | | | | | | | | | When sending packets to the guest we need a source MAC address, which we currently take from the host side interface we're using (though it's basically arbitrary). However if not given on the command line this MAC is initialized in an IPv4 specific path, and will end up as 00:00:00:00:00:00 when running "passt 6". The MAC address is also used for IPv6 packets, though. Interestingly, we largely seem to get away with using an all-zero MAC, but it's probably not a good idea. Make the IPv6 path pick the MAC address from its interface if the IPv4 path hasn't already done so. While we're there, use the existing MAC_IS_ZERO macro to make the code a little clearer. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* Separately locate external interfaces for IPv4 and IPv6David Gibson2022-07-307-80/+33
| | | | | | | | | | | | | | | | | Now that the back end allows passt/pasta to use different external interfaces for IPv4 and IPv6, use that to do the right thing in the case that the host has IPv4 and IPv6 connectivity via different interfaces. If the user hasn't explicitly chosen an interface, separately search for a suitable external interface for each protocol. As a bonus, this substantially simplifies the external interface probe. It also eliminates a subtle confusing case where in some circumstances we would pick the first interface in interface index order, and sometimes in order of routes returned from netlink. On some network configurations that could cause tests to fail, because the logic in the tests was subtly different (it always used route order). Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Correct determination of host interface name in testsDavid Gibson2022-07-302-2/+2
| | | | | | | | | | | | | By default, passt itself attaches to the first host interface with a default route. However, when determining the host interface name the tests implicitly select the *last* host interface: they use a jq expression which will list all interfaces with default routes, but the way output detection works in the scripts, it will only pick up the last line. If there are multiple interfaces with default routes on the host, and they each have a different address, this can cause spurious test failures. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* Allow different external interfaces for IPv4 and IPv6 connectivityDavid Gibson2022-07-304-21/+27
| | | | | | | | | | | | | | | | It's quite plausible for a host to have both IPv4 and IPv6 connectivity, but only via different interfaces. For example, this will happen in the case that IPv6 connectivity is via a tunnel (e.g. 6in4 or 6rd). It would also happen in the case that IPv4 access is via a tunnel on an otherwise IPv6 only local network, which is a setup that might become more common in the post IPv4 address exhaustion world. In turns out there's no real need for passt/pasta to get its IPv4 and IPv6 connectivity via the same interface, so we can handle this situation fairly easily. Change the core to allow eparate external interfaces for IPv4 and IPv6. We don't actually set these separately for now. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* test: Expand root partition of Debian sid amd64 and aarch64 imagesStefano Brivio2022-07-291-0/+12
| | | | | | | | | | | | | | | A couple of days ago, we started running out of space there as we're about to install gcc -- about 50 MiB are missing. Given that virt-resize (which could be conveniently invoked by the Makefile for tests) reorders partitions if we expand the first one, resize the image using qemu-img from the test script itself, and then take care of expanding root partition and filesystem online later. This is probably a temporary hack, so I'm not looking for a more generic or elegant solution at the moment. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* passt: Truncate PID file on open()Stefano Brivio2022-07-221-1/+1
| | | | | | | Otherwise, if the current PID has fewer digits than a previously written one, the content will be wrong. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* demo: Use git protocol downloadsDavid Gibson2022-07-222-2/+2
| | | | | | | | For some reason using https to clone from the passt git repo is very slow, at least from network-distant places. Use git protocol in the demo instead to avoid a tedious wait to get the source. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: No need to retrieve host ifname in ndp/pastaDavid Gibson2022-07-221-3/+2
| | | | | | | | | With pasta, the namespace interface name is generally the same as the host interface name. We already rely on this in the dhcp/pasta tests, but for no clear reason ndp/pasta separately determines the host interface name. Remove this unnecessary step. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Clean up better after iperf testsDavid Gibson2022-07-221-1/+1
| | | | | | | | | | | | | The iperf based test commands create a bunch of .bw and .pid files for each iperf client and server. The server side .bw files are cleaned up afterwards, but the pid files are not, and none of the client side files are cleaned up. The latter doesn't really matter when the client is run on ephemeral guests, but sometimes we run it in a namespace that shares the filesystem with the host. Clean up all of these files after the tests. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Use dhclient --no-pid for namespaces in two_guests testsDavid Gibson2022-07-221-4/+4
| | | | | | | | | | Before starting the guests, these tests configure addresses in a pasta namespace using dhclient. However, because it's a user namespace, it's not running as "real" root and can't write to the dhclient pid file. This doesn't stop it working, but causes an ugly error message which we can avoid by using the --no-pid option. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Remove unnecessary truncation of temporary files in udp testsDavid Gibson2022-07-223-18/+0
| | | | | | | | | All the UDP tests use :> to truncate some temporary data files. This appears to be so that they're empty before writing data to them with tee. However tee, by default, truncates its output file anyway (you need tee -a to append). So drop the unnecessary truncations. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Remove unnecessary ^D in passt_in_ns teardownDavid Gibson2022-07-221-2/+0
| | | | | | | | | | | | | | | | | teardown_passt_in_ns() sends a ^D to the NS pane, which appears to be intended to terminate the nsenter running there, leaving the namespace. However, we've also sent a ^D to the PASST pane which will exit the pasta instance which created the namespace. With the namespace destroyed the nsenter in the NS pane will be killed, so it does not need to be exited explicitly. In fact sending the extra ^D can be harmful, since it will exit the shell in which the nsenter was run, causing the whole pane to be closed. That can then mean that the "pane_wait NS" hangs indefinitely. I believe this will sometimes work, because there's a race between the various options here, but it should be more reliable without the extra ^D. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Use socat instead of netcatDavid Gibson2022-07-2211-200/+200
| | | | | | | | | | | | | | | Commit 41c02e10 ("tests: Use nmap-ncat instead of openbsd netcat for pasta tests") updated the pasta tests to use the nmap version of ncat instead of the openbsd version, for greater portability. For some upcoming changes, however, we'll be wanting to use socat. "socat" can do everything "ncat" can and more, so let's move all the tests using host tools (either directly on the host or via mbuto generated images) to using socat instead. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> [sbrivio: Fix a typo in port specification, 31337 instead of x31337] Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* valgrind needs futexDavid Gibson2022-07-221-1/+1
| | | | | | | | | Some versions of valgrind (such as the version on my Fedora laptop - valgrind-3.19.0-3.fc36.x86_64) use futexes. But futex is currently not allowed in the seccomp filter, even with the extra calls added for valgrind builds. Add it, to avoid spurious valgrind failures. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Fix creation of test file in udp passt testsDavid Gibson2022-07-221-1/+1
| | | | | | | | | | In what looks like a copy-and-paste error from the TCP script, the udp/passt test script creates a test file called '__TEMP_BIG__', while the commands it use the variable __TEMP__. Correct this so that a) we actually transfer the data we created for the purpose and b) we don't leave a stale __TEMP_BIG__ file in the current directory. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Fix detection of empty 'hout' responses in passt{,_in_ns} testsDavid Gibson2022-07-221-0/+14
| | | | | | | | | | | | | | The dhcp/passt and dhcp/passt_in_ns tests at least, and maybe others use 'hout' commands that need to be able to detect empty output. However, we don't set PS1, which means the screen-scraping logic which detects this may not be reliable. In addition, if the host is using a recent bash, it will have bracketed paste mode enabled which will also add escape codes which will mess up the empty output detection. Set the prompt and disable bracketed paste mode from the passt and passt_in_ns setups to avoid these problems. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Correctly handle domain search list in dhclient-scriptDavid Gibson2022-07-221-3/+3
| | | | | | | | | | | Currently our small custom dhclient-script only handles the 'domain-name' option, which can just list a single domain, not the 'domain-search' option, which can handle several. Correct it to handle both. We also weren't emptying the resolv.conf file before we began, which could lead to surprising contents after multiple DHCP transactions. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Handle the case of a nameserver on host localhostDavid Gibson2022-07-221-2/+2
| | | | | | | | | | | | We previously introduced a change to passt to handle the case where the host machine is its own nameserver - so resolv.conf points to 127.0.0.1. In this case we advertize the gateway as the DNS server for the guest, which in turn will be redirected back to the host by existing passt logic. The dhcp/passt doesn't handle this case correctly, so add some logic to account for it. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: More robust parsing of resolv.conf for DHCP testsDavid Gibson2022-07-221-8/+8
| | | | | | | | | | | | | | | | | To check publishing of DNS information via DHCP, we need to extract a list of nameservers and/or search domains from resolv.conf in the test script. The current version (usually) leaves the result with a trailing ','. That's usually ok because it happens on both guest and host sides. However it's kind of confusing, and might stop working if the host had a resolv.conf without a trailing \n on the last line. It also makes some later changes we'll need more difficult. So, normalize the output from resolv.conf a bit further, removing any trailing ','. It turns out we can do this with a slightly less complex sed expression than the one we already have. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Add some extra dhclient support directories to mbuto.imgDavid Gibson2022-07-221-1/+1
| | | | | | | | Although it can operate without them, dhclient can issue errors if it doesn't have /var/run to write a pid file and /var/lib to write a leases file. Create those in mbuto.img to stop it complaining. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Add rudimentary debugging to dhclient-scriptDavid Gibson2022-07-221-1/+5
| | | | | | | | We now supply a minimal dhclient-script of our own in the mbuto boot image. There are some problems with it, so add some basic logging to help debug it. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Let Fedora find dhclient-script in /usr/sbinDavid Gibson2022-07-221-0/+1
| | | | | | | | | | | | Modern Fedora (and RHEL) systems have /sbin as a symlink to /usr/sbin (along with a number of similar links). Along with that it expects to find dhclient-script in /usr/sbin/dhclient-script rather than /sbin/dhclient-script. Link them together in our mbuto image so that the Fedora build of dhclient can find it. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Remove no longer needed /usr/bin/bash linkDavid Gibson2022-07-221-2/+1
| | | | | | | | | | | | AFAICT the symlink we created in mbuto from /usr/bin/bash to /bin/sh was for the benefit of a dhclient-script which used /usr/bin/bash as its interpreter (e.g. in Fedora). That was a bit risky if the script really did require bash and we linked it to dash or another shell. We now supply our own custom dhclient-script, so we don't need the link any more. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* test: Drop further ^D in passt demo teardownStefano Brivio2022-07-221-5/+1
| | | | | | | | | Similar case as the one fixed by David's patch "tests: Remove unnecessary ^D in passt_in_ns teardown": we happen to pseudo-randomly close panes by unnecessarily exiting the parent shells there, and subsequent pane_wait directives hang. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Actually use pasta in Podman demo step with HTTP serviceStefano Brivio2022-07-221-1/+1
| | | | | | ...instead of slirp4netns. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Fix Podman build in Podman demoStefano Brivio2022-07-221-0/+2
| | | | | | | For some reason, I now have to update some "vendored" dependencies on a fresh git clone, at least in my environment, before building. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: In pasta demo, issue /sbin/dhclient instead of dhclientStefano Brivio2022-07-221-2/+2
| | | | | | | | This was dependent on my own environment where I usually have /sbin in $PATH. If that's missing, given that we're running dhclient as user, we won't find it. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: In demos, use pgrep instead of pstree to find namespace PIDStefano Brivio2022-07-222-8/+6
| | | | | | | | | | | | Parsing pstree's output is somewhat unreliable: there might be multiple pasta instances running on the same host, and depending on the overall output width pstree might truncate some branches. Ask pasta to save its PID to file, and use that as parameter for pgrep to find the PID of the interactive shell whose user and network namespaces we want to join. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: In passt demo, bring up eth0 in guest, not in namespace paneStefano Brivio2022-07-211-1/+1
| | | | Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* contrib: Rebase Podman patch to latest upstreamStefano Brivio2022-07-211-50/+41
| | | | | | A few trivial conflicts came up. No semantic changes. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* qrap: Add a neighbour solicitation to probe frames, instead of just ARP2022_07_20.9af2e5dStefano Brivio2022-07-201-4/+32
| | | | | | | | | | | | | | | | For a while now, passt disables ARP functionality completely if IPv4 is disabled. If qrap sends an ARP request as a probe in that case, it will receive no answer and move on, trying to find another instance. Add a second probe frame, a hardcoded neighbour solicitation, so that we get a neighbour advertisement if IPv6 is enabled. Without this change, IPv6-only operation is completely broken. Reported-by: Wenli Quan <wquan@redhat.com> Reported-by: Alona Paz <alkaplan@redhat.com> Link: https://bugzilla.redhat.com/show_bug.cgi?id=2106257 Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* conf: Reset range endpoints after parsing one excluded port specifier2022_07_14.b86cd00Stefano Brivio2022-07-141-0/+1
| | | | | | | | | I forgot to reset the range endpoints after parsing an item of the comma-separated list in commit 220759efb89a ("conf: Allow to specify ranges and ports excluded from given ranges") -- fix that. Fixes: 220759efb89a ("conf: Allow to specify ranges and ports excluded from given ranges") Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* demo/passt: Bring interface up before starting dhclient in guestStefano Brivio2022-07-141-0/+2
| | | | | | ...I forgot about one occurrence of this. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* conf: Allow to specify ranges and ports excluded from given rangesStefano Brivio2022-07-142-13/+127
| | | | | | | | | | | | | | | | | | | | | This is useful in environments where we want to forward a large number of ports, or all non-ephemeral ones, and some other service running on the host needs a few selected ports. I'm using ~ as prefix for the specification of excluded ranges and ports to avoid the need for explicit command line quoting. Ranges and ports can be excluded from given ranges by adding them in the comma-separated list, prefixed by ~. Some quick examples: -t 5000-6000,~5555: forward ports 5000 to 6000, but not 5555 -t ~20000-20010: forward all non-ephemeral, allowed ports, except for ports 20000 to 20010 ...more details in usage message and man page. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* conf: Fix initialisation of IPv6 unicast and link-local addressesStefano Brivio2022-07-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | In commit 675174d4ba25 ("conf, tap: Split netlink and pasta functions, allow interface configuration"), I broke the initial setting of the observed IPv6 addresses in two ways: - the size copied from the configured addresses corresponds to an IPv4 address, not to an IPv6 address - the observed link-local address is initialised to the configured unicast address, not the link-local one If we haven't seen the guest using some type of addresses yet, we should default to the configured values, hence these initial settings: fix both. This resulted in UDP flows to the guest from a unique local address on the network not working before the guest shows passt a valid address itself, as reported by Alona. Reported-by: Alona Paz <alkaplan@redhat.com> Link: https://bugs.passt.top/show_bug.cgi?id=16 Fixes: 675174d4ba25 ("conf, tap: Split netlink and pasta functions, allow interface configuration") Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* util: Fix debug print on failed SO_REUSEADDR setting in sock_l4()Stefano Brivio2022-07-141-1/+1
| | | | Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* passt: Allow exit_group() system call in seccomp profilesStefano Brivio2022-07-143-2/+4
| | | | | | | | | | | | We handle SIGQUIT and SIGTERM calling exit(), which is usually implemented with the exit_group() system call. If we don't allow exit_group(), we'll get a SIGSYS while handling SIGQUIT and SIGTERM, which means a misleading non-zero exit code. Reported-by: Wenli Quan <wquan@redhat.com> Link: https://bugzilla.redhat.com/show_bug.cgi?id=2101990 Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* arch, passt: Use executable link to form AVX2 binary pathStefano Brivio2022-07-142-13/+21
| | | | | | | | | | | | | | | | ...instead of argv[0], which might or might not contain a valid path to the executable itself. Instead of mangling argv[0], use the same link to find out if we're already running the AVX2 build where supported. Alternatively, we could use execvpe(), but that might result in running a different installed version, in case e.g. the set of binaries is present in both /usr/bin and /usr/local/bin, with both being in $PATH. Reported-by: Wenli Quan <wquan@redhat.com> Link: https://bugzilla.redhat.com/show_bug.cgi?id=2101310 Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* tests: Remove unused DNS6 calculation from fedora testsDavid Gibson2022-07-143-4/+3
| | | | | | | | | | | | | | | | | | The Fedora test file extracts some information from the host resolv.conf into a DNS6 variable which is then never used. Remove this unnecessary step, which is presumably a leftover from an earlier iteration. This was the only user of 'head' and 'sed' in the test file, so those can also be removed from the required tools. The debian and ubuntu test files also listed 'head' and 'sed' as tools, although they don't use them, I'm guessing because of an earlier version which had the same DNS6 code. Remove those as well. The opensuse test file still actually uses DNS6, so leave it there for now. The DNS handling and network config handling for SuSE looks to be kind of broken, but fixing that is a job for another day. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* tests: Prepare distro images during asset build phaseDavid Gibson2022-07-146-325/+69
| | | | | | | | | | | | | | | | | | | | | | | Before booting the guest images, the distro test cases need to modify the guest images, using virt-edit and guestfish, to boot in the way we need. At present this gets repeated on every test run, even though it's not really doing anything we want to test for. In addition many of the images have the same preparation steps leading to a lot of duplicated stages in the tests. A number of additional images can be prepared using common steps, even if the ones used now have small differences. Therefore move the preparation of most of the guest images to the asset build phase, where they can be done a single time for multiple test runs, using a common preparation script. We can even avoid making a copy of the disk image for booting, by using qemu's -snapshot option. A few of the distros (openSUSE and older Ubuntu) do need different steps. For now we don't chage how they are run, they could possibly be handled more like this in future. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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