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cmd: Add option to override the qemu binary to use

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It still defaults to whatever is in your PATH but it's
useful to override when experimenting with different
qemu builds.

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This commit is contained in:
Rolf Neugebauer 2018-02-01 15:49:00 +00:00
parent ca2e4f06a0
commit c5b3d088b0
1 changed files with 9 additions and 0 deletions
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9
src/cmd/linuxkit/run_qemu.go
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@ -167,6 +167,7 @@ func runQemu(args []string) {
// Backend configuration // Backend configuration
qemuContainerized := flags.Bool("containerized", false, "Run qemu in a container") qemuContainerized := flags.Bool("containerized", false, "Run qemu in a container")
qemuCmd := flags.String("qemu", "", "Path to the qemu binary (otherwise look in $PATH)")
// Generate UUID, so that /sys/class/dmi/id/product_uuid is populated // Generate UUID, so that /sys/class/dmi/id/product_uuid is populated
vmUUID := uuid.New() vmUUID := uuid.New()
@ -311,6 +312,7 @@ func runQemu(args []string) {
Memory: *mem, Memory: *mem,
KVM: *enableKVM, KVM: *enableKVM,
Containerized: *qemuContainerized, Containerized: *qemuContainerized,
QemuBinPath: *qemuCmd,
PublishedPorts: publishFlags, PublishedPorts: publishFlags,
NetdevConfig: netdevConfig, NetdevConfig: netdevConfig,
UUID: vmUUID, UUID: vmUUID,
@ -591,6 +593,13 @@ func buildQemuCmdline(config QemuConfig) (QemuConfig, []string) {
} }
func discoverBackend(config QemuConfig) QemuConfig { func discoverBackend(config QemuConfig) QemuConfig {
if config.QemuImgPath != "" && config.Containerized {
log.Fatal("-qemu and -containerized can't be used together.")
}
if config.QemuImgPath != "" {
return config
}
qemuBinPath := "qemu-system-" + config.Arch qemuBinPath := "qemu-system-" + config.Arch
qemuImgPath := "qemu-img" qemuImgPath := "qemu-img"