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qemu: Add a Knobs field to the Config structure

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The Knobs structure groups all qemu isolated boolean settings.
For now this is -no-user-config, -no-defaults and -nographic.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Samuel Ortiz 2016-09-12 19:43:39 +02:00
parent fe1bdcd2f7
commit ebfa382d2e
1 changed files with 33 additions and 1 deletions
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34
qemu.go
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@ -163,6 +163,18 @@ type Kernel struct {
Params string Params string
} }
// Knobs regroups a set of qemu boolean settings
type Knobs struct {
// NoUserConfig prevents qemu from loading user config files.
NoUserConfig bool
// NoDefaults prevents qemu from creating default devices.
NoDefaults bool
// NoGraphic completely disables graphic output.
NoGraphic bool
}
// Config is the qemu configuration structure. // Config is the qemu configuration structure.
// It allows for passing custom settings and parameters to the qemu API. // It allows for passing custom settings and parameters to the qemu API.
type Config struct { type Config struct {
@ -214,9 +226,12 @@ type Config struct {
// SMP is the quest multi processors configuration. // SMP is the quest multi processors configuration.
SMP SMP SMP SMP
// GlobalParam is the -global parameter // GlobalParam is the -global parameter.
GlobalParam string GlobalParam string
// Knobs is a set of qemu boolean settings.
Knobs Knobs
// FDs is a list of open file descriptors to be passed to the spawned qemu process // FDs is a list of open file descriptors to be passed to the spawned qemu process
FDs []*os.File FDs []*os.File
} }
@ -482,6 +497,22 @@ func appendKernel(params []string, config Config) []string {
return params return params
} }
func appendKnobs(params []string, config Config) []string {
if config.Knobs.NoUserConfig == true {
params = append(params, "-no-user-config")
}
if config.Knobs.NoDefaults == true {
params = append(params, "-nodefaults")
}
if config.Knobs.NoGraphic == true {
params = append(params, "-nographic")
}
return params
}
// LaunchQemu can be used to launch a new qemu instance. // LaunchQemu can be used to launch a new qemu instance.
// //
// The Config parameter contains a set of qemu parameters and settings. // The Config parameter contains a set of qemu parameters and settings.
@ -509,6 +540,7 @@ func LaunchQemu(config Config, logger QMPLog) (string, error) {
params = appendKernel(params, config) params = appendKernel(params, config)
params = appendGlobalParam(params, config) params = appendGlobalParam(params, config)
params = appendVGA(params, config) params = appendVGA(params, config)
params = appendKnobs(params, config)
return LaunchCustomQemu(config.Ctx, config.Path, params, config.FDs, logger) return LaunchCustomQemu(config.Ctx, config.Path, params, config.FDs, logger)
} }