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qemu_fsdev.go
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qemu_fsdev.go
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// SPDX-License-Identifier: BSD-3-Clause
// Copyright (c) 2022, Unikraft GmbH and The KraftKit Authors.
// Licensed under the BSD-3-Clause License (the "License").
// You may not use this file except in compliance with the License.
package qemu
import (
"fmt"
"strconv"
"strings"
)
type QemuFsDev interface {
fmt.Stringer
}
type QemuFsDevType string
const (
QemuFsDevTypeLocal = QemuFsDevType("local")
QemuFsDevTypeProxy = QemuFsDevType("proxy")
QemuFsDevTypeSynth = QemuFsDevType("synth")
)
type QemuFsDevLocalSecurityModel string
const (
QemuFsDevLocalSecurityModelMappedFile = QemuFsDevLocalSecurityModel("mapped-file")
QemuFsDevLocalSecurityModelMappedXattr = QemuFsDevLocalSecurityModel("mapped-xattr")
QemuFsDevLocalSecurityModelNone = QemuFsDevLocalSecurityModel("none")
QemuFsDevLocalSecurityModelPassthrough = QemuFsDevLocalSecurityModel("passthrough")
)
type QemuFsDevLocal struct {
Id string `json:"id,omitempty"`
Path string `json:"path,omitempty"`
SecurityModel QemuFsDevLocalSecurityModel `json:"security_model,omitempty"`
Writeout string `json:"writeout,omitempty"`
Readonly bool `json:"readonly,omitempty"`
Fmode string `json:"fmode,omitempty"`
Dmode string `json:"dmode,omitempty"`
Throttling struct {
// length of the bps-read-max burst period, in seconds
BpsReadMaxLength int `json:"bps-read-max-length,omitempty"`
// total bytes read burst
BpsReadMax int `json:"bps-read-max,omitempty"`
// limit read bytes per second
BpsRead int `json:"bps-read,omitempty"`
// length of the bps-total-max burst period, in seconds
BpsTotalMaxLength int `json:"bps-total-max-length,omitempty"`
// total bytes burst
BpsTotalMax int `json:"bps-total-max,omitempty"`
// limit total bytes per second
BpsTotal int `json:"bps-total,omitempty"`
// length of the bps-write-max burst period, in seconds
BpsWriteMaxLength int `json:"bps-write-max-length,omitempty"`
// total bytes write burst
BpsWriteMax int `json:"bps-write-max,omitempty"`
// limit write bytes per second
BpsWrite int `json:"bps-write,omitempty"`
// length of the iops-read-max burst period, in seconds
IopsReadMaxLength int `json:"iops-read-max-length,omitempty"`
// I/O operations read burst
IopsReadMax int `json:"iops-read-max,omitempty"`
// limit read operations per second
IopsRead int `json:"iops-read,omitempty"`
// when limiting by iops max size of an I/O in bytes
IopsSize int `json:"iops-size,omitempty"`
// length of the iops-total-max burst period, in seconds
IopsTotalMaxLength int `json:"iops-total-max-length,omitempty"`
// I/O operations burst
IopsTotalMax int `json:"iops-total-max,omitempty"`
// limit total I/O operations per second
IopsTotal int `json:"iops-total,omitempty"`
// length of the iops-write-max burst period, in seconds
IopsWriteMaxLength int `json:"iops-write-max-length,omitempty"`
// I/O operations write burst
IopsWriteMax int `json:"iops-write-max,omitempty"`
// limit write operations per second
IopsWrite int `json:"iops-write,omitempty"`
} `json:"throttling,omitempty"`
}
// String returns a QEMU command-line compatible fsdev string with the format:
// local,id=id,path=path,security_model=mapped-xattr|mapped-file|passthrough|none
// [,writeout=immediate][,readonly][,fmode=fmode][,dmode=dmode]
// [[,throttling.bps-total=b]|[[,throttling.bps-read=r][,throttling.bps-write=w]]]
// [[,throttling.iops-total=i]|[[,throttling.iops-read=r][,throttling.iops-write=w]]]
// [[,throttling.bps-total-max=bm]|[[,throttling.bps-read-max=rm][,throttling.bps-write-max=wm]]]
// [[,throttling.iops-total-max=im]|[[,throttling.iops-read-max=irm][,throttling.iops-write-max=iwm]]]
// [[,throttling.iops-size=is]]
func (fd QemuFsDevLocal) String() string {
var ret strings.Builder
ret.WriteString(string(QemuFsDevTypeLocal))
ret.WriteString(",id=")
ret.WriteString(fd.Id)
ret.WriteString(",path=")
ret.WriteString(fd.Path)
ret.WriteString(",security_model=")
ret.WriteString(string(fd.SecurityModel))
if len(fd.Writeout) > 0 {
ret.WriteString(",writeout=")
ret.WriteString(fd.Writeout)
}
if fd.Readonly {
ret.WriteString(",readonly")
}
if len(fd.Fmode) > 0 {
ret.WriteString(",fmode=")
ret.WriteString(fd.Fmode)
}
if len(fd.Dmode) > 0 {
ret.WriteString(",dmode=")
ret.WriteString(fd.Dmode)
}
if fd.Throttling.BpsReadMaxLength > 0 {
ret.WriteString(",throttling.bps-read-max-length=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsReadMaxLength))
}
if fd.Throttling.BpsReadMax > 0 {
ret.WriteString(",throttling.bps-read-max=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsReadMax))
}
if fd.Throttling.BpsRead > 0 {
ret.WriteString(",throttling.bps-read=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsRead))
}
if fd.Throttling.BpsTotalMaxLength > 0 {
ret.WriteString(",throttling.bps-total-max-length=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsTotalMaxLength))
}
if fd.Throttling.BpsTotalMax > 0 {
ret.WriteString(",throttling.bps-total-max=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsTotalMax))
}
if fd.Throttling.BpsTotal > 0 {
ret.WriteString(",throttling.bps-total=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsTotal))
}
if fd.Throttling.BpsWriteMaxLength > 0 {
ret.WriteString(",throttling.bps-write-max-length=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsWriteMaxLength))
}
if fd.Throttling.BpsWriteMax > 0 {
ret.WriteString(",throttling.bps-write-max=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsWriteMax))
}
if fd.Throttling.BpsWrite > 0 {
ret.WriteString(",throttling.bps-write=")
ret.WriteString(strconv.Itoa(fd.Throttling.BpsWrite))
}
if fd.Throttling.IopsReadMaxLength > 0 {
ret.WriteString(",throttling.iops-read-max-length=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsReadMaxLength))
}
if fd.Throttling.IopsReadMax > 0 {
ret.WriteString(",throttling.iops-read-max=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsReadMax))
}
if fd.Throttling.IopsRead > 0 {
ret.WriteString(",throttling.iops-read=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsRead))
}
if fd.Throttling.IopsSize > 0 {
ret.WriteString(",throttling.iops-size=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsSize))
}
if fd.Throttling.IopsTotalMaxLength > 0 {
ret.WriteString(",throttling.iops-total-max-length=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsTotalMaxLength))
}
if fd.Throttling.IopsTotalMax > 0 {
ret.WriteString(",throttling.iops-total-max=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsTotalMax))
}
if fd.Throttling.IopsTotal > 0 {
ret.WriteString(",throttling.iops-total=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsTotal))
}
if fd.Throttling.IopsWriteMaxLength > 0 {
ret.WriteString(",throttling.iops-write-max-length=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsWriteMaxLength))
}
if fd.Throttling.IopsWriteMax > 0 {
ret.WriteString(",throttling.iops-write-max=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsWriteMax))
}
if fd.Throttling.IopsWrite > 0 {
ret.WriteString(",throttling.iops-write=")
ret.WriteString(strconv.Itoa(fd.Throttling.IopsWrite))
}
return ret.String()
}
type QemuFsDevProxy struct {
Id string `json:"id,omitempty"`
Socket string `json:"socket,omitempty"`
SockFd int `json:"sock_fd,omitempty"`
Writeout string `json:"writeout,omitempty"`
Readonly bool `json:"readonly,omitempty"`
}
// String returns a QEMU command-line compatible fsdev string with the format:
// proxy,id=id,socket=socket[,writeout=immediate][,readonly]
// proxy,id=id,sock_fd=sock_fd[,writeout=immediate][,readonly]
func (fd QemuFsDevProxy) String() string {
var ret strings.Builder
ret.WriteString(string(QemuFsDevTypeSynth))
ret.WriteString(",id=")
ret.WriteString(fd.Id)
if len(fd.Socket) > 0 {
ret.WriteString(",socket=")
ret.WriteString(fd.Socket)
} else if fd.SockFd > 0 {
ret.WriteString(",sock_fd=")
ret.WriteString(strconv.Itoa(fd.SockFd))
}
if len(fd.Writeout) > 0 {
ret.WriteString(",writeout=")
ret.WriteString(fd.Writeout)
}
if fd.Readonly {
ret.WriteString(",readonly")
}
return ret.String()
}
type QemuFsDevSynth struct {
Id string `json:"id,omitempty"`
}
// String returns a QEMU command-line compatible fsdev string with the format:
// synth,id=id
func (fd QemuFsDevSynth) String() string {
var ret strings.Builder
ret.WriteString(string(QemuFsDevTypeSynth))
ret.WriteString(",id=")
ret.WriteString(fd.Id)
return ret.String()
}