This allows the user to always override the paramaters set by lkvm.
Say, currently 'lkvm run -p ro' doesn't work.
To keep the current logic we need to change strstr("root=") to check
cfg.kernel_cmdline, not real_cmdline. And perhaps we can even add a
simple helper add_param(name, val) to make this all more consistent;
it should only append "name=val" to real_cmdline if cfg.kernel_cmdline
doesn't include this paramater.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
---
builtin-run.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/builtin-run.c b/builtin-run.c
index 3da00da..ab1fc2a 100644
--- a/builtin-run.c
+++ b/builtin-run.c
@@ -566,12 +566,6 @@ static struct kvm *kvm_cmd_run_init(int argc, const char **argv)
memset(real_cmdline, 0, sizeof(real_cmdline));
kvm__arch_set_cmdline(real_cmdline, kvm->cfg.vnc || kvm->cfg.sdl || kvm->cfg.gtk);
- if (strlen(real_cmdline) > 0)
- strcat(real_cmdline, " ");
-
- if (kvm->cfg.kernel_cmdline)
- strlcat(real_cmdline, kvm->cfg.kernel_cmdline, sizeof(real_cmdline));
-
if (!kvm->cfg.guest_name) {
if (kvm->cfg.custom_rootfs) {
kvm->cfg.guest_name = kvm->cfg.custom_rootfs_name;
@@ -611,10 +605,15 @@ static struct kvm *kvm_cmd_run_init(int argc, const char **argv)
if (kvm_setup_guest_init(kvm->cfg.custom_rootfs_name))
die("Failed to setup init for guest.");
}
- } else if (!strstr(real_cmdline, "root=")) {
+ } else if (!strstr(kvm->cfg.kernel_cmdline, "root=")) {
strlcat(real_cmdline, " root=/dev/vda rw ", sizeof(real_cmdline));
}
+ if (kvm->cfg.kernel_cmdline) {
+ strcat(real_cmdline, " ");
+ strlcat(real_cmdline, kvm->cfg.kernel_cmdline, sizeof(real_cmdline));
+ }
+
kvm->cfg.real_cmdline = real_cmdline;
printf(" # %s run -k %s -m %Lu -c %d --name %s\n", KVM_BINARY_NAME,
--
2.4.3
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