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Re: [Qemu-devel] [PATCH v1 03/42] tests/docker: fix "cc" command to work
From: |
John Snow |
Subject: |
Re: [Qemu-devel] [PATCH v1 03/42] tests/docker: fix "cc" command to work with podman |
Date: |
Wed, 4 Sep 2019 19:31:32 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 9/4/19 4:29 PM, Alex Bennée wrote:
> Podman requires a little bit of additional magic to the uid mapping
> which was already done for the normal RunCommand. We simplify the
> logic by pushing it directly into the Docker::run method to avoid
> instantiating an extra Docker() object and ensure the CC command
> always runs as the current user.
>
> Signed-off-by: Alex Bennée <address@hidden>
> ---
> tests/docker/docker.py | 30 +++++++++++++++---------------
> tests/tcg/Makefile.include | 2 +-
> 2 files changed, 16 insertions(+), 16 deletions(-)
>
> diff --git a/tests/docker/docker.py b/tests/docker/docker.py
> index e23209f71ee..8f391eb278b 100755
> --- a/tests/docker/docker.py
> +++ b/tests/docker/docker.py
> @@ -318,10 +318,20 @@ class Docker(object):
> return False
> return checksum == _text_checksum(_dockerfile_preprocess(dockerfile))
>
> - def run(self, cmd, keep, quiet):
> + def run(self, cmd, keep, quiet, as_user=False):
> label = uuid.uuid1().hex
> if not keep:
> self._instances.append(label)
> +
> + if as_user:
> + uid = os.getuid()
> + cmd = [ "-u", str(uid) ] + cmd
> + # podman requires a bit more fiddling
> + if self._command[0] == "podman":
> + cmd = [ "--uidmap", "%d:0:1" % uid,
> + "--uidmap", "0:1:%d" % uid,
> + "--uidmap", "%d:%d:64536" % (uid + 1, uid + 1)] + cmd
> +
I was having problems with constructs like these recently. I think we
either need to use --userns=keep-id (vastly preferred) or adjust 64536
there to read as "65536 - uid" because not everyone will have a UID of 1000.
(My UID is over 20,000 and for whatever reason, this causes podman to
crash very badly when using this hackaround.)
> ret = self._do_check(["run", "--label",
> "com.qemu.instance.uuid=" + label] + cmd,
> quiet=quiet)
> @@ -364,15 +374,8 @@ class RunCommand(SubCommand):
> help="Run container using the current user's
> uid")
>
> def run(self, args, argv):
> - if args.run_as_current_user:
> - uid = os.getuid()
> - argv = [ "-u", str(uid) ] + argv
> - docker = Docker()
> - if docker._command[0] == "podman":
> - argv = [ "--uidmap", "%d:0:1" % uid,
> - "--uidmap", "0:1:%d" % uid,
> - "--uidmap", "%d:%d:64536" % (uid + 1, uid + 1)] +
> argv
> - return Docker().run(argv, args.keep, quiet=args.quiet)
> + return Docker().run(argv, args.keep, quiet=args.quiet,
> + as_user=args.run_as_current_user)
>
>
> class BuildCommand(SubCommand):
> @@ -556,8 +559,6 @@ class CcCommand(SubCommand):
> help="The docker image in which to run cc")
> parser.add_argument("--cc", default="cc",
> help="The compiler executable to call")
> - parser.add_argument("--user",
> - help="The user-id to run under")
> parser.add_argument("--source-path", "-s", nargs="*", dest="paths",
> help="""Extra paths to (ro) mount into container
> for
> reading sources""")
> @@ -571,11 +572,10 @@ class CcCommand(SubCommand):
> if args.paths:
> for p in args.paths:
> cmd += ["-v", "%s:%s:ro,z" % (p, p)]
> - if args.user:
> - cmd += ["-u", args.user]
> cmd += [args.image, args.cc]
> cmd += argv
> - return Docker().command("run", cmd, args.quiet)
> + return Docker().run(cmd, False, quiet=args.quiet,
> + as_user=True)
>
>
> class CheckCommand(SubCommand):
> diff --git a/tests/tcg/Makefile.include b/tests/tcg/Makefile.include
> index 73b5626fc5f..210f8428237 100644
> --- a/tests/tcg/Makefile.include
> +++ b/tests/tcg/Makefile.include
> @@ -41,7 +41,7 @@ ifneq ($(DOCKER_IMAGE),)
> # We also need the Docker make rules to depend on
> include $(SRC_PATH)/tests/docker/Makefile.include
>
> -DOCKER_COMPILE_CMD="$(DOCKER_SCRIPT) cc --user $(shell id -u) \
> +DOCKER_COMPILE_CMD="$(DOCKER_SCRIPT) cc \
> --cc $(DOCKER_CROSS_COMPILER) \
> -i qemu:$(DOCKER_IMAGE) \
> -s $(SRC_PATH) -- "
>
--
—js
[Qemu-devel] [PATCH v1 06/42] tests/tcg: move configuration to a sub-shell script, Alex Bennée, 2019/09/04
[Qemu-devel] [PATCH v1 10/42] tests/docker: add Buster to DOCKER_PARTIAL_IMAGES, Alex Bennée, 2019/09/04
[Qemu-devel] [PATCH v1 04/42] tests/tcg: use EXTRA_CFLAGS everywhere, Alex Bennée, 2019/09/04
[Qemu-devel] [PATCH v1 30/42] .travis.yml: Enable multiple caching features, Alex Bennée, 2019/09/04
[Qemu-devel] [PATCH v1 05/42] tests/tcg: cleanup Makefile inclusions, Alex Bennée, 2019/09/04
[Qemu-devel] [PATCH v1 14/42] tests/docker: move our HPPA cross compile to Buster, Alex Bennée, 2019/09/04