Modernize invertergui: MQTT write support, HA integration, UI updates

vendor/golang.org/x/sys/unix/syscall_linux.go

@@ -13,6 +13,7 @@ package unix
 
 import (
 	"encoding/binary"
+	"slices"
 	"strconv"
 	"syscall"
 	"time"
@@ -417,7 +418,7 @@ func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) {
 		return nil, 0, EINVAL
 	}
 	sa.raw.Family = AF_UNIX
-	for i := 0; i < n; i++ {
+	for i := range n {
 		sa.raw.Path[i] = int8(name[i])
 	}
 	// length is family (uint16), name, NUL.
@@ -507,7 +508,7 @@ func (sa *SockaddrL2) sockaddr() (unsafe.Pointer, _Socklen, error) {
 	psm := (*[2]byte)(unsafe.Pointer(&sa.raw.Psm))
 	psm[0] = byte(sa.PSM)
 	psm[1] = byte(sa.PSM >> 8)
-	for i := 0; i < len(sa.Addr); i++ {
+	for i := range len(sa.Addr) {
 		sa.raw.Bdaddr[i] = sa.Addr[len(sa.Addr)-1-i]
 	}
 	cid := (*[2]byte)(unsafe.Pointer(&sa.raw.Cid))
@@ -589,11 +590,11 @@ func (sa *SockaddrCAN) sockaddr() (unsafe.Pointer, _Socklen, error) {
 	sa.raw.Family = AF_CAN
 	sa.raw.Ifindex = int32(sa.Ifindex)
 	rx := (*[4]byte)(unsafe.Pointer(&sa.RxID))
-	for i := 0; i < 4; i++ {
+	for i := range 4 {
 		sa.raw.Addr[i] = rx[i]
 	}
 	tx := (*[4]byte)(unsafe.Pointer(&sa.TxID))
-	for i := 0; i < 4; i++ {
+	for i := range 4 {
 		sa.raw.Addr[i+4] = tx[i]
 	}
 	return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil
@@ -618,11 +619,11 @@ func (sa *SockaddrCANJ1939) sockaddr() (unsafe.Pointer, _Socklen, error) {
 	sa.raw.Family = AF_CAN
 	sa.raw.Ifindex = int32(sa.Ifindex)
 	n := (*[8]byte)(unsafe.Pointer(&sa.Name))
-	for i := 0; i < 8; i++ {
+	for i := range 8 {
 		sa.raw.Addr[i] = n[i]
 	}
 	p := (*[4]byte)(unsafe.Pointer(&sa.PGN))
-	for i := 0; i < 4; i++ {
+	for i := range 4 {
 		sa.raw.Addr[i+8] = p[i]
 	}
 	sa.raw.Addr[12] = sa.Addr
@@ -800,9 +801,7 @@ func (sa *SockaddrPPPoE) sockaddr() (unsafe.Pointer, _Socklen, error) {
 	// one. The kernel expects SID to be in network byte order.
 	binary.BigEndian.PutUint16(sa.raw[6:8], sa.SID)
 	copy(sa.raw[8:14], sa.Remote)
-	for i := 14; i < 14+IFNAMSIZ; i++ {
-		sa.raw[i] = 0
-	}
+	clear(sa.raw[14 : 14+IFNAMSIZ])
 	copy(sa.raw[14:], sa.Dev)
 	return unsafe.Pointer(&sa.raw), SizeofSockaddrPPPoX, nil
 }
@@ -911,7 +910,7 @@ func (sa *SockaddrIUCV) sockaddr() (unsafe.Pointer, _Socklen, error) {
 	// These are EBCDIC encoded by the kernel, but we still need to pad them
 	// with blanks. Initializing with blanks allows the caller to feed in either
 	// a padded or an unpadded string.
-	for i := 0; i < 8; i++ {
+	for i := range 8 {
 		sa.raw.Nodeid[i] = ' '
 		sa.raw.User_id[i] = ' '
 		sa.raw.Name[i] = ' '
@@ -1148,7 +1147,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
 		var user [8]byte
 		var name [8]byte
 
-		for i := 0; i < 8; i++ {
+		for i := range 8 {
 			user[i] = byte(pp.User_id[i])
 			name[i] = byte(pp.Name[i])
 		}
@@ -1173,11 +1172,11 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
 				Ifindex: int(pp.Ifindex),
 			}
 			name := (*[8]byte)(unsafe.Pointer(&sa.Name))
-			for i := 0; i < 8; i++ {
+			for i := range 8 {
 				name[i] = pp.Addr[i]
 			}
 			pgn := (*[4]byte)(unsafe.Pointer(&sa.PGN))
-			for i := 0; i < 4; i++ {
+			for i := range 4 {
 				pgn[i] = pp.Addr[i+8]
 			}
 			addr := (*[1]byte)(unsafe.Pointer(&sa.Addr))
@@ -1188,11 +1187,11 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
 				Ifindex: int(pp.Ifindex),
 			}
 			rx := (*[4]byte)(unsafe.Pointer(&sa.RxID))
-			for i := 0; i < 4; i++ {
+			for i := range 4 {
 				rx[i] = pp.Addr[i]
 			}
 			tx := (*[4]byte)(unsafe.Pointer(&sa.TxID))
-			for i := 0; i < 4; i++ {
+			for i := range 4 {
 				tx[i] = pp.Addr[i+4]
 			}
 			return sa, nil
@@ -1295,6 +1294,48 @@ func GetsockoptTCPInfo(fd, level, opt int) (*TCPInfo, error) {
 	return &value, err
 }
 
+// GetsockoptTCPCCVegasInfo returns algorithm specific congestion control information for a socket using the "vegas"
+// algorithm.
+//
+// The socket's congestion control algorighm can be retrieved via [GetsockoptString] with the [TCP_CONGESTION] option:
+//
+//	algo, err := unix.GetsockoptString(fd, unix.IPPROTO_TCP, unix.TCP_CONGESTION)
+func GetsockoptTCPCCVegasInfo(fd, level, opt int) (*TCPVegasInfo, error) {
+	var value [SizeofTCPCCInfo / 4]uint32 // ensure proper alignment
+	vallen := _Socklen(SizeofTCPCCInfo)
+	err := getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen)
+	out := (*TCPVegasInfo)(unsafe.Pointer(&value[0]))
+	return out, err
+}
+
+// GetsockoptTCPCCDCTCPInfo returns algorithm specific congestion control information for a socket using the "dctp"
+// algorithm.
+//
+// The socket's congestion control algorighm can be retrieved via [GetsockoptString] with the [TCP_CONGESTION] option:
+//
+//	algo, err := unix.GetsockoptString(fd, unix.IPPROTO_TCP, unix.TCP_CONGESTION)
+func GetsockoptTCPCCDCTCPInfo(fd, level, opt int) (*TCPDCTCPInfo, error) {
+	var value [SizeofTCPCCInfo / 4]uint32 // ensure proper alignment
+	vallen := _Socklen(SizeofTCPCCInfo)
+	err := getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen)
+	out := (*TCPDCTCPInfo)(unsafe.Pointer(&value[0]))
+	return out, err
+}
+
+// GetsockoptTCPCCBBRInfo returns algorithm specific congestion control information for a socket using the "bbr"
+// algorithm.
+//
+// The socket's congestion control algorighm can be retrieved via [GetsockoptString] with the [TCP_CONGESTION] option:
+//
+//	algo, err := unix.GetsockoptString(fd, unix.IPPROTO_TCP, unix.TCP_CONGESTION)
+func GetsockoptTCPCCBBRInfo(fd, level, opt int) (*TCPBBRInfo, error) {
+	var value [SizeofTCPCCInfo / 4]uint32 // ensure proper alignment
+	vallen := _Socklen(SizeofTCPCCInfo)
+	err := getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen)
+	out := (*TCPBBRInfo)(unsafe.Pointer(&value[0]))
+	return out, err
+}
+
 // GetsockoptString returns the string value of the socket option opt for the
 // socket associated with fd at the given socket level.
 func GetsockoptString(fd, level, opt int) (string, error) {
@@ -1818,6 +1859,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
 //sys	ClockAdjtime(clockid int32, buf *Timex) (state int, err error)
 //sys	ClockGetres(clockid int32, res *Timespec) (err error)
 //sys	ClockGettime(clockid int32, time *Timespec) (err error)
+//sys	ClockSettime(clockid int32, time *Timespec) (err error)
 //sys	ClockNanosleep(clockid int32, flags int, request *Timespec, remain *Timespec) (err error)
 //sys	Close(fd int) (err error)
 //sys	CloseRange(first uint, last uint, flags uint) (err error)
@@ -1959,7 +2001,26 @@ func Getpgrp() (pid int) {
 //sysnb	Getpid() (pid int)
 //sysnb	Getppid() (ppid int)
 //sys	Getpriority(which int, who int) (prio int, err error)
-//sys	Getrandom(buf []byte, flags int) (n int, err error)
+
+func Getrandom(buf []byte, flags int) (n int, err error) {
+	vdsoRet, supported := vgetrandom(buf, uint32(flags))
+	if supported {
+		if vdsoRet < 0 {
+			return 0, errnoErr(syscall.Errno(-vdsoRet))
+		}
+		return vdsoRet, nil
+	}
+	var p *byte
+	if len(buf) > 0 {
+		p = &buf[0]
+	}
+	r, _, e := Syscall(SYS_GETRANDOM, uintptr(unsafe.Pointer(p)), uintptr(len(buf)), uintptr(flags))
+	if e != 0 {
+		return 0, errnoErr(e)
+	}
+	return int(r), nil
+}
+
 //sysnb	Getrusage(who int, rusage *Rusage) (err error)
 //sysnb	Getsid(pid int) (sid int, err error)
 //sysnb	Gettid() (tid int)
@@ -2154,10 +2215,7 @@ func readvRacedetect(iovecs []Iovec, n int, err error) {
 		return
 	}
 	for i := 0; n > 0 && i < len(iovecs); i++ {
-		m := int(iovecs[i].Len)
-		if m > n {
-			m = n
-		}
+		m := min(int(iovecs[i].Len), n)
 		n -= m
 		if m > 0 {
 			raceWriteRange(unsafe.Pointer(iovecs[i].Base), m)
@@ -2208,10 +2266,7 @@ func writevRacedetect(iovecs []Iovec, n int) {
 		return
 	}
 	for i := 0; n > 0 && i < len(iovecs); i++ {
-		m := int(iovecs[i].Len)
-		if m > n {
-			m = n
-		}
+		m := min(int(iovecs[i].Len), n)
 		n -= m
 		if m > 0 {
 			raceReadRange(unsafe.Pointer(iovecs[i].Base), m)
@@ -2258,12 +2313,7 @@ func isGroupMember(gid int) bool {
 		return false
 	}
 
-	for _, g := range groups {
-		if g == gid {
-			return true
-		}
-	}
-	return false
+	return slices.Contains(groups, gid)
 }
 
 func isCapDacOverrideSet() bool {
@@ -2592,3 +2642,10 @@ func SchedGetAttr(pid int, flags uint) (*SchedAttr, error) {
 }
 
 //sys	Cachestat(fd uint, crange *CachestatRange, cstat *Cachestat_t, flags uint) (err error)
+//sys	Mseal(b []byte, flags uint) (err error)
+
+//sys	setMemPolicy(mode int, mask *CPUSet, size int) (err error) = SYS_SET_MEMPOLICY
+
+func SetMemPolicy(mode int, mask *CPUSet) error {
+	return setMemPolicy(mode, mask, _CPU_SETSIZE)
+}