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package libvirt
import (
"fmt"
"log"
"strings"
libvirtxml "github.com/libvirt/libvirt-go-xml"
)
func getGuestForArchType(caps libvirtxml.Caps, arch string, virttype string) (libvirtxml.CapsGuest, error) {
for _, guest := range caps.Guests {
log.Printf("[TRACE] Checking for %s/%s against %s/%s\n", arch, virttype, guest.Arch.Name, guest.OSType)
if guest.Arch.Name == arch && guest.OSType == virttype {
log.Printf("[DEBUG] Found %d machines in guest for %s/%s", len(guest.Arch.Machines), arch, virttype)
return guest, nil
}
}
return libvirtxml.CapsGuest{}, fmt.Errorf("[DEBUG] Could not find any guests for architecure type %s/%s", virttype, arch)
}
func getCanonicalMachineName(caps libvirtxml.Caps, arch string, virttype string, targetmachine string) (string, error) {
guest, err := getGuestForArchType(caps, arch, virttype)
if err != nil {
return "", err
}
for _, machine := range guest.Arch.Machines {
if machine.Name == targetmachine {
if machine.Canonical != nil {
return *machine.Canonical, nil
}
return machine.Name, nil
}
}
return "", fmt.Errorf("[WARN] Cannot find machine type %s for %s/%s in %v", targetmachine, virttype, arch, caps)
}
func getOriginalMachineName(caps libvirtxml.Caps, arch string, virttype string, targetmachine string) (string, error) {
guest, err := getGuestForArchType(caps, arch, virttype)
if err != nil {
return "", err
}
for _, machine := range guest.Arch.Machines {
if machine.Canonical != nil && *machine.Canonical == targetmachine {
return machine.Name, nil
}
}
return targetmachine, nil // There wasn't a canonical mapping to this
}
// as kernal args allow duplicate keys, we use a list of maps
// we jump to a next map as soon as we find a duplicate
// key
func splitKernelCmdLine(cmdLine string) ([]map[string]string, error) {
var cmdLines []map[string]string
if len(cmdLine) == 0 {
return cmdLines, nil
}
currCmdLine := make(map[string]string)
keylessCmdLineArgs := []string{}
argVals := strings.Split(cmdLine, " ")
for _, argVal := range argVals {
if !strings.Contains(argVal, "=") {
// keyless cmd line (eg: nosplash)
keylessCmdLineArgs = append(keylessCmdLineArgs, argVal)
continue
}
kv := strings.SplitN(argVal, "=", 2)
k, v := kv[0], kv[1]
// if the key is duplicate, start a new map
if _, ok := currCmdLine[k]; ok {
cmdLines = append(cmdLines, currCmdLine)
currCmdLine = make(map[string]string)
}
currCmdLine[k] = v
}
if len(currCmdLine) > 0 {
cmdLines = append(cmdLines, currCmdLine)
}
if len(keylessCmdLineArgs) > 0 {
cl := make(map[string]string)
cl["_"] = strings.Join(keylessCmdLineArgs, " ")
cmdLines = append(cmdLines, cl)
}
return cmdLines, nil
}
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