diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_linux.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_linux.go | 522 |
1 files changed, 407 insertions, 115 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux.go b/vendor/golang.org/x/sys/unix/syscall_linux.go index 0efe45a..f432b06 100644 --- a/vendor/golang.org/x/sys/unix/syscall_linux.go +++ b/vendor/golang.org/x/sys/unix/syscall_linux.go @@ -13,7 +13,6 @@ package unix import ( "encoding/binary" - "runtime" "syscall" "unsafe" ) @@ -38,6 +37,13 @@ func Creat(path string, mode uint32) (fd int, err error) { return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode) } +func EpollCreate(size int) (fd int, err error) { + if size <= 0 { + return -1, EINVAL + } + return EpollCreate1(0) +} + //sys FanotifyInit(flags uint, event_f_flags uint) (fd int, err error) //sys fanotifyMark(fd int, flags uint, mask uint64, dirFd int, pathname *byte) (err error) @@ -66,48 +72,22 @@ func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) { return fchmodat(dirfd, path, mode) } -//sys ioctl(fd int, req uint, arg uintptr) (err error) - -// ioctl itself should not be exposed directly, but additional get/set -// functions for specific types are permissible. - -// IoctlRetInt performs an ioctl operation specified by req on a device -// associated with opened file descriptor fd, and returns a non-negative -// integer that is returned by the ioctl syscall. -func IoctlRetInt(fd int, req uint) (int, error) { - ret, _, err := Syscall(SYS_IOCTL, uintptr(fd), uintptr(req), 0) - if err != 0 { - return 0, err - } - return int(ret), nil -} - -// IoctlSetPointerInt performs an ioctl operation which sets an -// integer value on fd, using the specified request number. The ioctl -// argument is called with a pointer to the integer value, rather than -// passing the integer value directly. -func IoctlSetPointerInt(fd int, req uint, value int) error { - v := int32(value) - return ioctl(fd, req, uintptr(unsafe.Pointer(&v))) +func InotifyInit() (fd int, err error) { + return InotifyInit1(0) } -func IoctlSetRTCTime(fd int, value *RTCTime) error { - err := ioctl(fd, RTC_SET_TIME, uintptr(unsafe.Pointer(value))) - runtime.KeepAlive(value) - return err -} +//sys ioctl(fd int, req uint, arg uintptr) (err error) = SYS_IOCTL +//sys ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL -func IoctlGetUint32(fd int, req uint) (uint32, error) { - var value uint32 - err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) - return value, err -} - -func IoctlGetRTCTime(fd int) (*RTCTime, error) { - var value RTCTime - err := ioctl(fd, RTC_RD_TIME, uintptr(unsafe.Pointer(&value))) - return &value, err -} +// ioctl itself should not be exposed directly, but additional get/set functions +// for specific types are permissible. These are defined in ioctl.go and +// ioctl_linux.go. +// +// The third argument to ioctl is often a pointer but sometimes an integer. +// Callers should use ioctlPtr when the third argument is a pointer and ioctl +// when the third argument is an integer. +// +// TODO: some existing code incorrectly uses ioctl when it should use ioctlPtr. //sys Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error) @@ -133,6 +113,31 @@ func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) return openat(dirfd, path, flags|O_LARGEFILE, mode) } +//sys openat2(dirfd int, path string, open_how *OpenHow, size int) (fd int, err error) + +func Openat2(dirfd int, path string, how *OpenHow) (fd int, err error) { + return openat2(dirfd, path, how, SizeofOpenHow) +} + +func Pipe(p []int) error { + return Pipe2(p, 0) +} + +//sysnb pipe2(p *[2]_C_int, flags int) (err error) + +func Pipe2(p []int, flags int) error { + if len(p) != 2 { + return EINVAL + } + var pp [2]_C_int + err := pipe2(&pp, flags) + if err == nil { + p[0] = int(pp[0]) + p[1] = int(pp[1]) + } + return err +} + //sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error) func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) { @@ -142,6 +147,15 @@ func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error return ppoll(&fds[0], len(fds), timeout, sigmask) } +func Poll(fds []PollFd, timeout int) (n int, err error) { + var ts *Timespec + if timeout >= 0 { + ts = new(Timespec) + *ts = NsecToTimespec(int64(timeout) * 1e6) + } + return Ppoll(fds, ts, nil) +} + //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error) func Readlink(path string, buf []byte) (n int, err error) { @@ -192,27 +206,7 @@ func Utimes(path string, tv []Timeval) error { //sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error) func UtimesNano(path string, ts []Timespec) error { - if ts == nil { - err := utimensat(AT_FDCWD, path, nil, 0) - if err != ENOSYS { - return err - } - return utimes(path, nil) - } - if len(ts) != 2 { - return EINVAL - } - err := utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) - if err != ENOSYS { - return err - } - // If the utimensat syscall isn't available (utimensat was added to Linux - // in 2.6.22, Released, 8 July 2007) then fall back to utimes - var tv [2]Timeval - for i := 0; i < 2; i++ { - tv[i] = NsecToTimeval(TimespecToNsec(ts[i])) - } - return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) + return UtimesNanoAt(AT_FDCWD, path, ts, 0) } func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error { @@ -380,9 +374,7 @@ func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) p[0] = byte(sa.Port >> 8) p[1] = byte(sa.Port) - for i := 0; i < len(sa.Addr); i++ { - sa.raw.Addr[i] = sa.Addr[i] - } + sa.raw.Addr = sa.Addr return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil } @@ -395,9 +387,7 @@ func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) { p[0] = byte(sa.Port >> 8) p[1] = byte(sa.Port) sa.raw.Scope_id = sa.ZoneId - for i := 0; i < len(sa.Addr); i++ { - sa.raw.Addr[i] = sa.Addr[i] - } + sa.raw.Addr = sa.Addr return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil } @@ -446,9 +436,7 @@ func (sa *SockaddrLinklayer) sockaddr() (unsafe.Pointer, _Socklen, error) { sa.raw.Hatype = sa.Hatype sa.raw.Pkttype = sa.Pkttype sa.raw.Halen = sa.Halen - for i := 0; i < len(sa.Addr); i++ { - sa.raw.Addr[i] = sa.Addr[i] - } + sa.raw.Addr = sa.Addr return unsafe.Pointer(&sa.raw), SizeofSockaddrLinklayer, nil } @@ -591,6 +579,36 @@ func (sa *SockaddrCAN) sockaddr() (unsafe.Pointer, _Socklen, error) { return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil } +// SockaddrCANJ1939 implements the Sockaddr interface for AF_CAN using J1939 +// protocol (https://en.wikipedia.org/wiki/SAE_J1939). For more information +// on the purposes of the fields, check the official linux kernel documentation +// available here: https://www.kernel.org/doc/Documentation/networking/j1939.rst +type SockaddrCANJ1939 struct { + Ifindex int + Name uint64 + PGN uint32 + Addr uint8 + raw RawSockaddrCAN +} + +func (sa *SockaddrCANJ1939) sockaddr() (unsafe.Pointer, _Socklen, error) { + if sa.Ifindex < 0 || sa.Ifindex > 0x7fffffff { + return nil, 0, EINVAL + } + sa.raw.Family = AF_CAN + sa.raw.Ifindex = int32(sa.Ifindex) + n := (*[8]byte)(unsafe.Pointer(&sa.Name)) + for i := 0; i < 8; i++ { + sa.raw.Addr[i] = n[i] + } + p := (*[4]byte)(unsafe.Pointer(&sa.PGN)) + for i := 0; i < 4; i++ { + sa.raw.Addr[i+8] = p[i] + } + sa.raw.Addr[12] = sa.Addr + return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil +} + // SockaddrALG implements the Sockaddr interface for AF_ALG type sockets. // SockaddrALG enables userspace access to the Linux kernel's cryptography // subsystem. The Type and Name fields specify which type of hash or cipher @@ -698,16 +716,19 @@ type SockaddrVM struct { // CID and Port specify a context ID and port address for a VM socket. // Guests have a unique CID, and hosts may have a well-known CID of: // - VMADDR_CID_HYPERVISOR: refers to the hypervisor process. + // - VMADDR_CID_LOCAL: refers to local communication (loopback). // - VMADDR_CID_HOST: refers to other processes on the host. - CID uint32 - Port uint32 - raw RawSockaddrVM + CID uint32 + Port uint32 + Flags uint8 + raw RawSockaddrVM } func (sa *SockaddrVM) sockaddr() (unsafe.Pointer, _Socklen, error) { sa.raw.Family = AF_VSOCK sa.raw.Port = sa.Port sa.raw.Cid = sa.CID + sa.raw.Flags = sa.Flags return unsafe.Pointer(&sa.raw), SizeofSockaddrVM, nil } @@ -830,15 +851,116 @@ func (sa *SockaddrTIPC) sockaddr() (unsafe.Pointer, _Socklen, error) { if sa.Addr == nil { return nil, 0, EINVAL } - sa.raw.Family = AF_TIPC sa.raw.Scope = int8(sa.Scope) sa.raw.Addrtype = sa.Addr.tipcAddrtype() sa.raw.Addr = sa.Addr.tipcAddr() - return unsafe.Pointer(&sa.raw), SizeofSockaddrTIPC, nil } +// SockaddrL2TPIP implements the Sockaddr interface for IPPROTO_L2TP/AF_INET sockets. +type SockaddrL2TPIP struct { + Addr [4]byte + ConnId uint32 + raw RawSockaddrL2TPIP +} + +func (sa *SockaddrL2TPIP) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Family = AF_INET + sa.raw.Conn_id = sa.ConnId + sa.raw.Addr = sa.Addr + return unsafe.Pointer(&sa.raw), SizeofSockaddrL2TPIP, nil +} + +// SockaddrL2TPIP6 implements the Sockaddr interface for IPPROTO_L2TP/AF_INET6 sockets. +type SockaddrL2TPIP6 struct { + Addr [16]byte + ZoneId uint32 + ConnId uint32 + raw RawSockaddrL2TPIP6 +} + +func (sa *SockaddrL2TPIP6) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Family = AF_INET6 + sa.raw.Conn_id = sa.ConnId + sa.raw.Scope_id = sa.ZoneId + sa.raw.Addr = sa.Addr + return unsafe.Pointer(&sa.raw), SizeofSockaddrL2TPIP6, nil +} + +// SockaddrIUCV implements the Sockaddr interface for AF_IUCV sockets. +type SockaddrIUCV struct { + UserID string + Name string + raw RawSockaddrIUCV +} + +func (sa *SockaddrIUCV) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Family = AF_IUCV + // 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++ { + sa.raw.Nodeid[i] = ' ' + sa.raw.User_id[i] = ' ' + sa.raw.Name[i] = ' ' + } + if len(sa.UserID) > 8 || len(sa.Name) > 8 { + return nil, 0, EINVAL + } + for i, b := range []byte(sa.UserID[:]) { + sa.raw.User_id[i] = int8(b) + } + for i, b := range []byte(sa.Name[:]) { + sa.raw.Name[i] = int8(b) + } + return unsafe.Pointer(&sa.raw), SizeofSockaddrIUCV, nil +} + +type SockaddrNFC struct { + DeviceIdx uint32 + TargetIdx uint32 + NFCProtocol uint32 + raw RawSockaddrNFC +} + +func (sa *SockaddrNFC) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Sa_family = AF_NFC + sa.raw.Dev_idx = sa.DeviceIdx + sa.raw.Target_idx = sa.TargetIdx + sa.raw.Nfc_protocol = sa.NFCProtocol + return unsafe.Pointer(&sa.raw), SizeofSockaddrNFC, nil +} + +type SockaddrNFCLLCP struct { + DeviceIdx uint32 + TargetIdx uint32 + NFCProtocol uint32 + DestinationSAP uint8 + SourceSAP uint8 + ServiceName string + raw RawSockaddrNFCLLCP +} + +func (sa *SockaddrNFCLLCP) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Sa_family = AF_NFC + sa.raw.Dev_idx = sa.DeviceIdx + sa.raw.Target_idx = sa.TargetIdx + sa.raw.Nfc_protocol = sa.NFCProtocol + sa.raw.Dsap = sa.DestinationSAP + sa.raw.Ssap = sa.SourceSAP + if len(sa.ServiceName) > len(sa.raw.Service_name) { + return nil, 0, EINVAL + } + copy(sa.raw.Service_name[:], sa.ServiceName) + sa.raw.SetServiceNameLen(len(sa.ServiceName)) + return unsafe.Pointer(&sa.raw), SizeofSockaddrNFCLLCP, nil +} + +var socketProtocol = func(fd int) (int, error) { + return GetsockoptInt(fd, SOL_SOCKET, SO_PROTOCOL) +} + func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { switch rsa.Addr.Family { case AF_NETLINK: @@ -858,9 +980,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { sa.Hatype = pp.Hatype sa.Pkttype = pp.Pkttype sa.Halen = pp.Halen - for i := 0; i < len(sa.Addr); i++ { - sa.Addr[i] = pp.Addr[i] - } + sa.Addr = pp.Addr return sa, nil case AF_UNIX: @@ -889,35 +1009,61 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { return sa, nil case AF_INET: - pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) - sa := new(SockaddrInet4) - p := (*[2]byte)(unsafe.Pointer(&pp.Port)) - sa.Port = int(p[0])<<8 + int(p[1]) - for i := 0; i < len(sa.Addr); i++ { - sa.Addr[i] = pp.Addr[i] + proto, err := socketProtocol(fd) + if err != nil { + return nil, err + } + + switch proto { + case IPPROTO_L2TP: + pp := (*RawSockaddrL2TPIP)(unsafe.Pointer(rsa)) + sa := new(SockaddrL2TPIP) + sa.ConnId = pp.Conn_id + sa.Addr = pp.Addr + return sa, nil + default: + pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) + sa := new(SockaddrInet4) + p := (*[2]byte)(unsafe.Pointer(&pp.Port)) + sa.Port = int(p[0])<<8 + int(p[1]) + sa.Addr = pp.Addr + return sa, nil } - return sa, nil case AF_INET6: - pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) - sa := new(SockaddrInet6) - p := (*[2]byte)(unsafe.Pointer(&pp.Port)) - sa.Port = int(p[0])<<8 + int(p[1]) - sa.ZoneId = pp.Scope_id - for i := 0; i < len(sa.Addr); i++ { - sa.Addr[i] = pp.Addr[i] + proto, err := socketProtocol(fd) + if err != nil { + return nil, err + } + + switch proto { + case IPPROTO_L2TP: + pp := (*RawSockaddrL2TPIP6)(unsafe.Pointer(rsa)) + sa := new(SockaddrL2TPIP6) + sa.ConnId = pp.Conn_id + sa.ZoneId = pp.Scope_id + sa.Addr = pp.Addr + return sa, nil + default: + pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) + sa := new(SockaddrInet6) + p := (*[2]byte)(unsafe.Pointer(&pp.Port)) + sa.Port = int(p[0])<<8 + int(p[1]) + sa.ZoneId = pp.Scope_id + sa.Addr = pp.Addr + return sa, nil } - return sa, nil case AF_VSOCK: pp := (*RawSockaddrVM)(unsafe.Pointer(rsa)) sa := &SockaddrVM{ - CID: pp.Cid, - Port: pp.Port, + CID: pp.Cid, + Port: pp.Port, + Flags: pp.Flags, } return sa, nil case AF_BLUETOOTH: - proto, err := GetsockoptInt(fd, SOL_SOCKET, SO_PROTOCOL) + proto, err := socketProtocol(fd) if err != nil { return nil, err } @@ -986,6 +1132,92 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { } return sa, nil + case AF_IUCV: + pp := (*RawSockaddrIUCV)(unsafe.Pointer(rsa)) + + var user [8]byte + var name [8]byte + + for i := 0; i < 8; i++ { + user[i] = byte(pp.User_id[i]) + name[i] = byte(pp.Name[i]) + } + + sa := &SockaddrIUCV{ + UserID: string(user[:]), + Name: string(name[:]), + } + return sa, nil + + case AF_CAN: + proto, err := socketProtocol(fd) + if err != nil { + return nil, err + } + + pp := (*RawSockaddrCAN)(unsafe.Pointer(rsa)) + + switch proto { + case CAN_J1939: + sa := &SockaddrCANJ1939{ + Ifindex: int(pp.Ifindex), + } + name := (*[8]byte)(unsafe.Pointer(&sa.Name)) + for i := 0; i < 8; i++ { + name[i] = pp.Addr[i] + } + pgn := (*[4]byte)(unsafe.Pointer(&sa.PGN)) + for i := 0; i < 4; i++ { + pgn[i] = pp.Addr[i+8] + } + addr := (*[1]byte)(unsafe.Pointer(&sa.Addr)) + addr[0] = pp.Addr[12] + return sa, nil + default: + sa := &SockaddrCAN{ + Ifindex: int(pp.Ifindex), + } + rx := (*[4]byte)(unsafe.Pointer(&sa.RxID)) + for i := 0; i < 4; i++ { + rx[i] = pp.Addr[i] + } + tx := (*[4]byte)(unsafe.Pointer(&sa.TxID)) + for i := 0; i < 4; i++ { + tx[i] = pp.Addr[i+4] + } + return sa, nil + } + case AF_NFC: + proto, err := socketProtocol(fd) + if err != nil { + return nil, err + } + switch proto { + case NFC_SOCKPROTO_RAW: + pp := (*RawSockaddrNFC)(unsafe.Pointer(rsa)) + sa := &SockaddrNFC{ + DeviceIdx: pp.Dev_idx, + TargetIdx: pp.Target_idx, + NFCProtocol: pp.Nfc_protocol, + } + return sa, nil + case NFC_SOCKPROTO_LLCP: + pp := (*RawSockaddrNFCLLCP)(unsafe.Pointer(rsa)) + if uint64(pp.Service_name_len) > uint64(len(pp.Service_name)) { + return nil, EINVAL + } + sa := &SockaddrNFCLLCP{ + DeviceIdx: pp.Dev_idx, + TargetIdx: pp.Target_idx, + NFCProtocol: pp.Nfc_protocol, + DestinationSAP: pp.Dsap, + SourceSAP: pp.Ssap, + ServiceName: string(pp.Service_name[:pp.Service_name_len]), + } + return sa, nil + default: + return nil, EINVAL + } } return nil, EAFNOSUPPORT } @@ -993,7 +1225,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { func Accept(fd int) (nfd int, sa Sockaddr, err error) { var rsa RawSockaddrAny var len _Socklen = SizeofSockaddrAny - nfd, err = accept(fd, &rsa, &len) + nfd, err = accept4(fd, &rsa, &len, 0) if err != nil { return } @@ -1115,6 +1347,13 @@ func SetsockoptTpacketReq3(fd, level, opt int, tp *TpacketReq3) error { return setsockopt(fd, level, opt, unsafe.Pointer(tp), unsafe.Sizeof(*tp)) } +func SetsockoptTCPRepairOpt(fd, level, opt int, o []TCPRepairOpt) (err error) { + if len(o) == 0 { + return EINVAL + } + return setsockopt(fd, level, opt, unsafe.Pointer(&o[0]), uintptr(SizeofTCPRepairOpt*len(o))) +} + // Keyctl Commands (http://man7.org/linux/man-pages/man2/keyctl.2.html) // KeyctlInt calls keyctl commands in which each argument is an int. @@ -1247,8 +1486,8 @@ func KeyctlRestrictKeyring(ringid int, keyType string, restriction string) error return keyctlRestrictKeyringByType(KEYCTL_RESTRICT_KEYRING, ringid, keyType, restriction) } -//sys keyctlRestrictKeyringByType(cmd int, arg2 int, keyType string, restriction string) (err error) = SYS_KEYCTL -//sys keyctlRestrictKeyring(cmd int, arg2 int) (err error) = SYS_KEYCTL +//sys keyctlRestrictKeyringByType(cmd int, arg2 int, keyType string, restriction string) (err error) = SYS_KEYCTL +//sys keyctlRestrictKeyring(cmd int, arg2 int) (err error) = SYS_KEYCTL func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { var msg Msghdr @@ -1538,6 +1777,16 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri return mount(source, target, fstype, flags, datap) } +//sys mountSetattr(dirfd int, pathname string, flags uint, attr *MountAttr, size uintptr) (err error) = SYS_MOUNT_SETATTR + +// MountSetattr is a wrapper for mount_setattr(2). +// https://man7.org/linux/man-pages/man2/mount_setattr.2.html +// +// Requires kernel >= 5.12. +func MountSetattr(dirfd int, pathname string, flags uint, attr *MountAttr) error { + return mountSetattr(dirfd, pathname, flags, attr, unsafe.Sizeof(*attr)) +} + func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) { if raceenabled { raceReleaseMerge(unsafe.Pointer(&ioSync)) @@ -1555,17 +1804,23 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e //sys Acct(path string) (err error) //sys AddKey(keyType string, description string, payload []byte, ringid int) (id int, err error) //sys Adjtimex(buf *Timex) (state int, err error) -//sys Capget(hdr *CapUserHeader, data *CapUserData) (err error) -//sys Capset(hdr *CapUserHeader, data *CapUserData) (err error) +//sysnb Capget(hdr *CapUserHeader, data *CapUserData) (err error) +//sysnb Capset(hdr *CapUserHeader, data *CapUserData) (err error) //sys Chdir(path string) (err error) //sys Chroot(path string) (err error) //sys ClockGetres(clockid int32, res *Timespec) (err error) //sys ClockGettime(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) //sys CopyFileRange(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) //sys DeleteModule(name string, flags int) (err error) //sys Dup(oldfd int) (fd int, err error) + +func Dup2(oldfd, newfd int) error { + return Dup3(oldfd, newfd, 0) +} + //sys Dup3(oldfd int, newfd int, flags int) (err error) //sysnb EpollCreate1(flag int) (fd int, err error) //sysnb EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error) @@ -1616,8 +1871,8 @@ func Getpgrp() (pid int) { //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) //sys PerfEventOpen(attr *PerfEventAttr, pid int, cpu int, groupFd int, flags int) (fd int, err error) //sys PivotRoot(newroot string, putold string) (err error) = SYS_PIVOT_ROOT -//sysnb prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) = SYS_PRLIMIT64 -//sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error) +//sysnb Prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) = SYS_PRLIMIT64 +//sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error) //sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) = SYS_PSELECT6 //sys read(fd int, p []byte) (n int, err error) //sys Removexattr(path string, attr string) (err error) @@ -1690,6 +1945,9 @@ func Signalfd(fd int, sigmask *Sigset_t, flags int) (newfd int, err error) { //sys Syncfs(fd int) (err error) //sysnb Sysinfo(info *Sysinfo_t) (err error) //sys Tee(rfd int, wfd int, len int, flags int) (n int64, err error) +//sysnb TimerfdCreate(clockid int, flags int) (fd int, err error) +//sysnb TimerfdGettime(fd int, currValue *ItimerSpec) (err error) +//sysnb TimerfdSettime(fd int, flags int, newValue *ItimerSpec, oldValue *ItimerSpec) (err error) //sysnb Tgkill(tgid int, tid int, sig syscall.Signal) (err error) //sysnb Times(tms *Tms) (ticks uintptr, err error) //sysnb Umask(mask int) (oldmask int) @@ -1859,11 +2117,30 @@ func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) { return int(n), nil } +func isGroupMember(gid int) bool { + groups, err := Getgroups() + if err != nil { + return false + } + + for _, g := range groups { + if g == gid { + return true + } + } + return false +} + //sys faccessat(dirfd int, path string, mode uint32) (err error) +//sys Faccessat2(dirfd int, path string, mode uint32, flags int) (err error) func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) { - if flags & ^(AT_SYMLINK_NOFOLLOW|AT_EACCESS) != 0 { - return EINVAL + if flags == 0 { + return faccessat(dirfd, path, mode) + } + + if err := Faccessat2(dirfd, path, mode, flags); err != ENOSYS && err != EPERM { + return err } // The Linux kernel faccessat system call does not take any flags. @@ -1872,8 +2149,8 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) { // Because people naturally expect syscall.Faccessat to act // like C faccessat, we do the same. - if flags == 0 { - return faccessat(dirfd, path, mode) + if flags & ^(AT_SYMLINK_NOFOLLOW|AT_EACCESS) != 0 { + return EINVAL } var st Stat_t @@ -1916,7 +2193,7 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) { gid = Getgid() } - if uint32(gid) == st.Gid { + if uint32(gid) == st.Gid || isGroupMember(gid) { fmode = (st.Mode >> 3) & 7 } else { fmode = st.Mode & 7 @@ -1930,8 +2207,8 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) { return EACCES } -//sys nameToHandleAt(dirFD int, pathname string, fh *fileHandle, mountID *_C_int, flags int) (err error) = SYS_NAME_TO_HANDLE_AT -//sys openByHandleAt(mountFD int, fh *fileHandle, flags int) (fd int, err error) = SYS_OPEN_BY_HANDLE_AT +//sys nameToHandleAt(dirFD int, pathname string, fh *fileHandle, mountID *_C_int, flags int) (err error) = SYS_NAME_TO_HANDLE_AT +//sys openByHandleAt(mountFD int, fh *fileHandle, flags int) (fd int, err error) = SYS_OPEN_BY_HANDLE_AT // fileHandle is the argument to nameToHandleAt and openByHandleAt. We // originally tried to generate it via unix/linux/types.go with "type @@ -2017,6 +2294,26 @@ func Klogset(typ int, arg int) (err error) { return nil } +// RemoteIovec is Iovec with the pointer replaced with an integer. +// It is used for ProcessVMReadv and ProcessVMWritev, where the pointer +// refers to a location in a different process' address space, which +// would confuse the Go garbage collector. +type RemoteIovec struct { + Base uintptr + Len int +} + +//sys ProcessVMReadv(pid int, localIov []Iovec, remoteIov []RemoteIovec, flags uint) (n int, err error) = SYS_PROCESS_VM_READV +//sys ProcessVMWritev(pid int, localIov []Iovec, remoteIov []RemoteIovec, flags uint) (n int, err error) = SYS_PROCESS_VM_WRITEV + +//sys PidfdOpen(pid int, flags int) (fd int, err error) = SYS_PIDFD_OPEN +//sys PidfdGetfd(pidfd int, targetfd int, flags int) (fd int, err error) = SYS_PIDFD_GETFD + +//sys shmat(id int, addr uintptr, flag int) (ret uintptr, err error) +//sys shmctl(id int, cmd int, buf *SysvShmDesc) (result int, err error) +//sys shmdt(addr uintptr) (err error) +//sys shmget(key int, size int, flag int) (id int, err error) + /* * Unimplemented */ @@ -2098,10 +2395,6 @@ func Klogset(typ int, arg int) (err error) { // SetRobustList // SetThreadArea // SetTidAddress -// Shmat -// Shmctl -// Shmdt -// Shmget // Sigaltstack // Swapoff // Swapon @@ -2111,7 +2404,6 @@ func Klogset(typ int, arg int) (err error) { // TimerGetoverrun // TimerGettime // TimerSettime -// Timerfd // Tkill (obsolete) // Tuxcall // Umount2 |