Documentation
¶
Overview ¶
Package qemu is suitable for running QEMU-based integration tests.
The environment variable `UROOT_QEMU` overrides the path to QEMU and the first few arguments (defaults to "qemu"). For example, I use:
UROOT_QEMU='qemu-system-x86_64 -L . -m 4096 -enable-kvm'
For CI, this environment variable is set in `.circleci/images/integration/Dockerfile`.
Index ¶
- Variables
- type Network
- type Options
- type VM
- func (v *VM) Close()
- func (v *VM) Cmdline() []string
- func (v *VM) CmdlineQuoted() string
- func (v *VM) Expect(search string) error
- func (v *VM) ExpectRE(pattern *regexp.Regexp) (string, error)
- func (v *VM) ExpectRETimeout(pattern *regexp.Regexp, timeout time.Duration) (string, error)
- func (v *VM) ExpectTimeout(search string, timeout time.Duration) error
- func (v *VM) Send(in string)
- func (v *VM) TimeoutOr() time.Duration
Constants ¶
This section is empty.
Variables ¶
var DefaultTimeout = 7 * time.Second
DefaultTimeout for `Expect` and `ExpectRE` functions.
var TimeoutMultiplier = 2.0
TimeoutMultiplier increases all timeouts proportionally. Useful when running QEMU on a slow machine.
Functions ¶
This section is empty.
Types ¶
type Network ¶
type Network struct {
// contains filtered or unexported fields
}
func NewNetwork ¶
func NewNetwork() *Network
type Options ¶
type Options struct {
// Path to the bzImage kernel
Kernel string
// Path to the initramfs.
Initramfs string
// Extra kernel arguments.
KernelArgs string
// /dev/sda1.
SharedDir string
// ExtraArgs are additional QEMU arguments.
ExtraArgs []string
// Where to send serial output.
SerialOutput io.WriteCloser
// Timeout is the expect timeout.
Timeout time.Duration
// Network to expose inside the VM.
Network *Network
}
Options is filled and pass to `Start()`.
type VM ¶
type VM struct {
Options *Options
// contains filtered or unexported fields
}
VM is a running QEMU virtual machine.
func (*VM) CmdlineQuoted ¶
CmdlineQuoted quotes any of QEMU's command line arguments containing a space so it is easy to copy-n-paste into a shell for debugging.
func (*VM) Expect ¶
Expect returns an error if the given string is not found in vEMU's serial output within `DefaultTimeout`.
func (*VM) ExpectRE ¶
ExpectRE returns an error if the given regular expression is not found in vEMU's serial output within `DefaultTimeout`. The matched string is returned.
func (*VM) ExpectRETimeout ¶
ExpectRETimeout returns an error if the given regular expression is not found in vEMU's serial output within the given timeout. The matched string is returned.
func (*VM) ExpectTimeout ¶
ExpectTimeout returns an error if the given string is not found in vEMU's serial output within the given timeout.
Source Files