Unlike the hyperkit runner, the qemu runner already had better
support for auto-detecting the boot method so the changes
are less invasive (and backward compatible).
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
Previous commits added support for building 'kernel+squashfs'.
This commit adds support for booting this build format on hyperkit.
The changes are a little bigger because some restructuring of the
code was required to support a third (after kernel+initrd and EFI
ISO) boot method.
To keep the code simpler this commit also removes some auto-detection
code for ISO booting. Users now have to specify '-iso -uefi' on the
command line to boot an EFI ISO. Previously, only '-uefi' was
required.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This contains a small fix to the disk binadings and allows
booting with a kernel alone (no initrd).
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This includes two improvements:
- being able to specify the packages used for building images
- support for building squashfs images.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This utility image takes a tarball as input and places the
contents into a read-only, compressed squashfs filesystem
which is produced on stdout.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
$ git diff linuxkit.yml
diff --git a/linuxkit.yml b/linuxkit.yml
index e2ec829db..21b84e4ad 100644
--- a/linuxkit.yml
+++ b/linuxkit.yml
@@ -1,6 +1,6 @@
kernel:
image: linuxkit/kernel:4.14.32
- cmdline: "console=tty0 console=ttyS0 console=ttyAMA0"
+ cmdline: "console=ttyS0 console=foobar"
init:
- linuxkit/init:v0.3
- linuxkit/runc:v0.3
$ linuxkit build linuxkit.yml
[...]
$ linuxkit run linuxkit
[...]
getty: cmdline has console=foobar but /dev/foobar is not a character device; not starting getty for foobar
linuxkit-2ae2c420a11c login: root (automatic login)
Welcome to LinuxKit!
NOTE: This system is namespaced.
The namespace you are currently in may not be the root.
(ns: getty) linuxkit-2ae2c420a11c:~# ls -l /proc/1/root/dev/foobar
-rw-r--r-- 1 root root 311 Apr 9 13:19 /proc/1/root/dev/foobar
(ns: getty) linuxkit-2ae2c420a11c:~# cat /proc/1/root/dev/foobar
Welcome to LinuxKit
## .
## ## ## ==
## ## ## ## ## ===
/"""""""""""""""""\___/ ===
{ / ===-
\______ O __/
\ \ __/
\____\_______/
Also added quotes around $tty for good measure.
Signed-off-by: Ian Campbell <ijc@docker.com>
This option was removed in 4.16.x in favour of
CONFIG_CC_STACKPROTECTOR_AUTO. We do not check for
this option as we also force CONFIG_CC_STACKPROTECTOR_STRONG.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
The kernel config is based on the 4.15.x kernel config
run through 'make defconfig && make oldconfig' and then
tweaked a little by hand.
Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
If you happen to be exactly on a tag then:
$ linuxkit pkg build --dev pkg/init
Building "ijc/init:dev"
Cannot release "v0.3" if not pushing
Do not try and infer a release if not pushing so this is possible again.
The subsequent check for `bo.release != "" && !bo.push` remains since the
caller could have used `WithRelease` but not `WithPush`. Our CLI never does
this, but a hypothetical other user of the library might.
Signed-off-by: Ian Campbell <ijc@docker.com>
static pie only seems to work on Alpine currently, but static is
a good default. Give the user choices...
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
