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runqemu: support rootfs mounted ro

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Optionally allow to set QB_KERNEL_ROOT to e.g. "/dev/vda ro" to mount the
rootfs reay-only in Qemu.

(From OE-Core rev: 448eb1fd21287ba16b17e9402ce040b86ae3638c)

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Adrian Freihofer
2021-11-12 23:29:18 +01:00
committed by Richard Purdie
parent 7ca8dd76ea
commit 9c3e6fd9b6
2 changed files with 9 additions and 1 deletions
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8
scripts/runqemu
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@@ -1266,7 +1266,13 @@ class BaseConfig(object):
self.rootfs_options = vm_drive
if not self.fstype in self.vmtypes:
self.rootfs_options += ' -no-reboot'
self.kernel_cmdline = 'root=%s rw' % (self.get('QB_KERNEL_ROOT'))
# By default, ' rw' is appended to QB_KERNEL_ROOT unless either ro or rw is explicitly passed.
qb_kernel_root = self.get('QB_KERNEL_ROOT')
qb_kernel_root_l = qb_kernel_root.split()
if not ('ro' in qb_kernel_root_l or 'rw' in qb_kernel_root_l):
qb_kernel_root += ' rw'
self.kernel_cmdline = 'root=%s' % qb_kernel_root
if self.fstype == 'nfs':
self.rootfs_options = ''