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path: root/vendor/golang.org/x/sys/unix/syscall_linux.go
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Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_linux.go')
-rw-r--r--vendor/golang.org/x/sys/unix/syscall_linux.go405
1 files changed, 230 insertions, 175 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux.go b/vendor/golang.org/x/sys/unix/syscall_linux.go
index 41b91fd..ecb0f27 100644
--- a/vendor/golang.org/x/sys/unix/syscall_linux.go
+++ b/vendor/golang.org/x/sys/unix/syscall_linux.go
@@ -13,8 +13,8 @@ package unix
import (
"encoding/binary"
- "runtime"
"syscall"
+ "time"
"unsafe"
)
@@ -38,6 +38,13 @@ 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)
@@ -66,11 +73,22 @@ 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)
+func InotifyInit() (fd int, err error) {
+ return InotifyInit1(0)
+}
-// 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.
+//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
+
+// 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)
@@ -102,6 +120,25 @@ 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) {
@@ -111,6 +148,15 @@ 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) {
@@ -161,27 +207,7 @@ 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 {
@@ -224,6 +250,13 @@ func Getwd() (wd string, err error) {
if n < 1 || n > len(buf) || buf[n-1] != 0 {
return "", EINVAL
}
+ // In some cases, Linux can return a path that starts with the
+ // "(unreachable)" prefix, which can potentially be a valid relative
+ // path. To work around that, return ENOENT if path is not absolute.
+ if buf[0] != '/' {
+ return "", ENOENT
+ }
+
return string(buf[0 : n-1]), nil
}
@@ -333,6 +366,8 @@ func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int,
return
}
+//sys Waitid(idType int, id int, info *Siginfo, options int, rusage *Rusage) (err error)
+
func Mkfifo(path string, mode uint32) error {
return Mknod(path, mode|S_IFIFO, 0)
}
@@ -349,9 +384,7 @@ 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
}
@@ -364,9 +397,7 @@ 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
}
@@ -415,9 +446,7 @@ 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
}
@@ -483,24 +512,24 @@ func (sa *SockaddrL2) sockaddr() (unsafe.Pointer, _Socklen, error) {
//
// Server example:
//
-// fd, _ := Socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)
-// _ = unix.Bind(fd, &unix.SockaddrRFCOMM{
-// Channel: 1,
-// Addr: [6]uint8{0, 0, 0, 0, 0, 0}, // BDADDR_ANY or 00:00:00:00:00:00
-// })
-// _ = Listen(fd, 1)
-// nfd, sa, _ := Accept(fd)
-// fmt.Printf("conn addr=%v fd=%d", sa.(*unix.SockaddrRFCOMM).Addr, nfd)
-// Read(nfd, buf)
+// fd, _ := Socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)
+// _ = unix.Bind(fd, &unix.SockaddrRFCOMM{
+// Channel: 1,
+// Addr: [6]uint8{0, 0, 0, 0, 0, 0}, // BDADDR_ANY or 00:00:00:00:00:00
+// })
+// _ = Listen(fd, 1)
+// nfd, sa, _ := Accept(fd)
+// fmt.Printf("conn addr=%v fd=%d", sa.(*unix.SockaddrRFCOMM).Addr, nfd)
+// Read(nfd, buf)
//
// Client example:
//
-// fd, _ := Socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)
-// _ = Connect(fd, &SockaddrRFCOMM{
-// Channel: 1,
-// Addr: [6]byte{0x11, 0x22, 0x33, 0xaa, 0xbb, 0xcc}, // CC:BB:AA:33:22:11
-// })
-// Write(fd, []byte(`hello`))
+// fd, _ := Socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)
+// _ = Connect(fd, &SockaddrRFCOMM{
+// Channel: 1,
+// Addr: [6]byte{0x11, 0x22, 0x33, 0xaa, 0xbb, 0xcc}, // CC:BB:AA:33:22:11
+// })
+// Write(fd, []byte(`hello`))
type SockaddrRFCOMM struct {
// Addr represents a bluetooth address, byte ordering is little-endian.
Addr [6]uint8
@@ -527,12 +556,12 @@ func (sa *SockaddrRFCOMM) sockaddr() (unsafe.Pointer, _Socklen, error) {
// The SockaddrCAN struct must be bound to the socket file descriptor
// using Bind before the CAN socket can be used.
//
-// // Read one raw CAN frame
-// fd, _ := Socket(AF_CAN, SOCK_RAW, CAN_RAW)
-// addr := &SockaddrCAN{Ifindex: index}
-// Bind(fd, addr)
-// frame := make([]byte, 16)
-// Read(fd, frame)
+// // Read one raw CAN frame
+// fd, _ := Socket(AF_CAN, SOCK_RAW, CAN_RAW)
+// addr := &SockaddrCAN{Ifindex: index}
+// Bind(fd, addr)
+// frame := make([]byte, 16)
+// Read(fd, frame)
//
// The full SocketCAN documentation can be found in the linux kernel
// archives at: https://www.kernel.org/doc/Documentation/networking/can.txt
@@ -603,13 +632,13 @@ func (sa *SockaddrCANJ1939) sockaddr() (unsafe.Pointer, _Socklen, error) {
// Here is an example of using an AF_ALG socket with SHA1 hashing.
// The initial socket setup process is as follows:
//
-// // Open a socket to perform SHA1 hashing.
-// fd, _ := unix.Socket(unix.AF_ALG, unix.SOCK_SEQPACKET, 0)
-// addr := &unix.SockaddrALG{Type: "hash", Name: "sha1"}
-// unix.Bind(fd, addr)
-// // Note: unix.Accept does not work at this time; must invoke accept()
-// // manually using unix.Syscall.
-// hashfd, _, _ := unix.Syscall(unix.SYS_ACCEPT, uintptr(fd), 0, 0)
+// // Open a socket to perform SHA1 hashing.
+// fd, _ := unix.Socket(unix.AF_ALG, unix.SOCK_SEQPACKET, 0)
+// addr := &unix.SockaddrALG{Type: "hash", Name: "sha1"}
+// unix.Bind(fd, addr)
+// // Note: unix.Accept does not work at this time; must invoke accept()
+// // manually using unix.Syscall.
+// hashfd, _, _ := unix.Syscall(unix.SYS_ACCEPT, uintptr(fd), 0, 0)
//
// Once a file descriptor has been returned from Accept, it may be used to
// perform SHA1 hashing. The descriptor is not safe for concurrent use, but
@@ -618,39 +647,39 @@ func (sa *SockaddrCANJ1939) sockaddr() (unsafe.Pointer, _Socklen, error) {
// When hashing a small byte slice or string, a single Write and Read may
// be used:
//
-// // Assume hashfd is already configured using the setup process.
-// hash := os.NewFile(hashfd, "sha1")
-// // Hash an input string and read the results. Each Write discards
-// // previous hash state. Read always reads the current state.
-// b := make([]byte, 20)
-// for i := 0; i < 2; i++ {
-// io.WriteString(hash, "Hello, world.")
-// hash.Read(b)
-// fmt.Println(hex.EncodeToString(b))
-// }
-// // Output:
-// // 2ae01472317d1935a84797ec1983ae243fc6aa28
-// // 2ae01472317d1935a84797ec1983ae243fc6aa28
+// // Assume hashfd is already configured using the setup process.
+// hash := os.NewFile(hashfd, "sha1")
+// // Hash an input string and read the results. Each Write discards
+// // previous hash state. Read always reads the current state.
+// b := make([]byte, 20)
+// for i := 0; i < 2; i++ {
+// io.WriteString(hash, "Hello, world.")
+// hash.Read(b)
+// fmt.Println(hex.EncodeToString(b))
+// }
+// // Output:
+// // 2ae01472317d1935a84797ec1983ae243fc6aa28
+// // 2ae01472317d1935a84797ec1983ae243fc6aa28
//
// For hashing larger byte slices, or byte streams such as those read from
// a file or socket, use Sendto with MSG_MORE to instruct the kernel to update
// the hash digest instead of creating a new one for a given chunk and finalizing it.
//
-// // Assume hashfd and addr are already configured using the setup process.
-// hash := os.NewFile(hashfd, "sha1")
-// // Hash the contents of a file.
-// f, _ := os.Open("/tmp/linux-4.10-rc7.tar.xz")
-// b := make([]byte, 4096)
-// for {
-// n, err := f.Read(b)
-// if err == io.EOF {
-// break
-// }
-// unix.Sendto(hashfd, b[:n], unix.MSG_MORE, addr)
-// }
-// hash.Read(b)
-// fmt.Println(hex.EncodeToString(b))
-// // Output: 85cdcad0c06eef66f805ecce353bec9accbeecc5
+// // Assume hashfd and addr are already configured using the setup process.
+// hash := os.NewFile(hashfd, "sha1")
+// // Hash the contents of a file.
+// f, _ := os.Open("/tmp/linux-4.10-rc7.tar.xz")
+// b := make([]byte, 4096)
+// for {
+// n, err := f.Read(b)
+// if err == io.EOF {
+// break
+// }
+// unix.Sendto(hashfd, b[:n], unix.MSG_MORE, addr)
+// }
+// hash.Read(b)
+// fmt.Println(hex.EncodeToString(b))
+// // Output: 85cdcad0c06eef66f805ecce353bec9accbeecc5
//
// For more information, see: http://www.chronox.de/crypto-API/crypto/userspace-if.html.
type SockaddrALG struct {
@@ -832,12 +861,10 @@ 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
}
@@ -851,9 +878,7 @@ type SockaddrL2TPIP struct {
func (sa *SockaddrL2TPIP) sockaddr() (unsafe.Pointer, _Socklen, error) {
sa.raw.Family = AF_INET
sa.raw.Conn_id = sa.ConnId
- 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), SizeofSockaddrL2TPIP, nil
}
@@ -869,9 +894,7 @@ 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
- 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), SizeofSockaddrL2TPIP6, nil
}
@@ -967,9 +990,7 @@ 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:
@@ -1008,18 +1029,14 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
pp := (*RawSockaddrL2TPIP)(unsafe.Pointer(rsa))
sa := new(SockaddrL2TPIP)
sa.ConnId = pp.Conn_id
- for i := 0; i < len(sa.Addr); i++ {
- sa.Addr[i] = pp.Addr[i]
- }
+ 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])
- for i := 0; i < len(sa.Addr); i++ {
- sa.Addr[i] = pp.Addr[i]
- }
+ sa.Addr = pp.Addr
return sa, nil
}
@@ -1035,9 +1052,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
sa := new(SockaddrL2TPIP6)
sa.ConnId = pp.Conn_id
sa.ZoneId = pp.Scope_id
- for i := 0; i < len(sa.Addr); i++ {
- sa.Addr[i] = pp.Addr[i]
- }
+ sa.Addr = pp.Addr
return sa, nil
default:
pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa))
@@ -1045,9 +1060,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
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]
- }
+ sa.Addr = pp.Addr
return sa, nil
}
@@ -1222,11 +1235,7 @@ 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
- // Try accept4 first for Android, then try accept for kernel older than 2.6.28
nfd, err = accept4(fd, &rsa, &len, 0)
- if err == ENOSYS {
- nfd, err = accept(fd, &rsa, &len)
- }
if err != nil {
return
}
@@ -1348,6 +1357,13 @@ 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.
@@ -1483,19 +1499,13 @@ func KeyctlRestrictKeyring(ringid int, keyType string, restriction string) error
//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) {
+func recvmsgRaw(fd int, iov []Iovec, oob []byte, flags int, rsa *RawSockaddrAny) (n, oobn int, recvflags int, err error) {
var msg Msghdr
- var rsa RawSockaddrAny
- msg.Name = (*byte)(unsafe.Pointer(&rsa))
+ msg.Name = (*byte)(unsafe.Pointer(rsa))
msg.Namelen = uint32(SizeofSockaddrAny)
- var iov Iovec
- if len(p) > 0 {
- iov.Base = &p[0]
- iov.SetLen(len(p))
- }
var dummy byte
if len(oob) > 0 {
- if len(p) == 0 {
+ if emptyIovecs(iov) {
var sockType int
sockType, err = GetsockoptInt(fd, SOL_SOCKET, SO_TYPE)
if err != nil {
@@ -1503,53 +1513,36 @@ func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from
}
// receive at least one normal byte
if sockType != SOCK_DGRAM {
- iov.Base = &dummy
- iov.SetLen(1)
+ var iova [1]Iovec
+ iova[0].Base = &dummy
+ iova[0].SetLen(1)
+ iov = iova[:]
}
}
msg.Control = &oob[0]
msg.SetControllen(len(oob))
}
- msg.Iov = &iov
- msg.Iovlen = 1
+ if len(iov) > 0 {
+ msg.Iov = &iov[0]
+ msg.SetIovlen(len(iov))
+ }
if n, err = recvmsg(fd, &msg, flags); err != nil {
return
}
oobn = int(msg.Controllen)
recvflags = int(msg.Flags)
- // source address is only specified if the socket is unconnected
- if rsa.Addr.Family != AF_UNSPEC {
- from, err = anyToSockaddr(fd, &rsa)
- }
- return
-}
-
-func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) {
- _, err = SendmsgN(fd, p, oob, to, flags)
return
}
-func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) {
- var ptr unsafe.Pointer
- var salen _Socklen
- if to != nil {
- var err error
- ptr, salen, err = to.sockaddr()
- if err != nil {
- return 0, err
- }
- }
+func sendmsgN(fd int, iov []Iovec, oob []byte, ptr unsafe.Pointer, salen _Socklen, flags int) (n int, err error) {
var msg Msghdr
msg.Name = (*byte)(ptr)
msg.Namelen = uint32(salen)
- var iov Iovec
- if len(p) > 0 {
- iov.Base = &p[0]
- iov.SetLen(len(p))
- }
var dummy byte
+ var empty bool
if len(oob) > 0 {
- if len(p) == 0 {
+ empty = emptyIovecs(iov)
+ if empty {
var sockType int
sockType, err = GetsockoptInt(fd, SOL_SOCKET, SO_TYPE)
if err != nil {
@@ -1557,19 +1550,22 @@ func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error)
}
// send at least one normal byte
if sockType != SOCK_DGRAM {
- iov.Base = &dummy
- iov.SetLen(1)
+ var iova [1]Iovec
+ iova[0].Base = &dummy
+ iova[0].SetLen(1)
}
}
msg.Control = &oob[0]
msg.SetControllen(len(oob))
}
- msg.Iov = &iov
- msg.Iovlen = 1
+ if len(iov) > 0 {
+ msg.Iov = &iov[0]
+ msg.SetIovlen(len(iov))
+ }
if n, err = sendmsg(fd, &msg, flags); err != nil {
return 0, err
}
- if len(oob) > 0 && len(p) == 0 {
+ if len(oob) > 0 && empty {
n = 0
}
return n, nil
@@ -1771,6 +1767,16 @@ 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))
@@ -1802,11 +1808,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e
//sys Dup(oldfd int) (fd int, err error)
func Dup2(oldfd, newfd int) error {
- // Android O and newer blocks dup2; riscv and arm64 don't implement dup2.
- if runtime.GOOS == "android" || runtime.GOARCH == "riscv64" || runtime.GOARCH == "arm64" {
- return Dup3(oldfd, newfd, 0)
- }
- return dup2(oldfd, newfd)
+ return Dup3(oldfd, newfd, 0)
}
//sys Dup3(oldfd int, newfd int, flags int) (err error)
@@ -1826,6 +1828,9 @@ func Dup2(oldfd, newfd int) error {
//sys Fremovexattr(fd int, attr string) (err error)
//sys Fsetxattr(fd int, attr string, dest []byte, flags int) (err error)
//sys Fsync(fd int) (err error)
+//sys Fsmount(fd int, flags int, mountAttrs int) (fsfd int, err error)
+//sys Fsopen(fsName string, flags int) (fd int, err error)
+//sys Fspick(dirfd int, pathName string, flags int) (fd int, err error)
//sys Getdents(fd int, buf []byte) (n int, err error) = SYS_GETDENTS64
//sysnb Getpgid(pid int) (pgid int, err error)
@@ -1856,10 +1861,12 @@ func Getpgrp() (pid int) {
//sys MemfdCreate(name string, flags int) (fd int, err error)
//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
+//sys MoveMount(fromDirfd int, fromPathName string, toDirfd int, toPathName string, flags int) (err error)
//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
+//sys OpenTree(dfd int, fileName string, flags uint) (r int, 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
+//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)
@@ -2181,7 +2188,7 @@ func Faccessat(dirfd int, path string, mode uint32, flags int) (err error) {
gid = Getgid()
}
- if uint32(gid) == st.Gid || isGroupMember(gid) {
+ if uint32(gid) == st.Gid || isGroupMember(int(st.Gid)) {
fmode = (st.Mode >> 3) & 7
} else {
fmode = st.Mode & 7
@@ -2294,11 +2301,65 @@ type RemoteIovec struct {
//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 PidfdSendSignal(pidfd int, sig Signal, info *Siginfo, flags int) (err error) = SYS_PIDFD_SEND_SIGNAL
+
+//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)
+
+//sys getitimer(which int, currValue *Itimerval) (err error)
+//sys setitimer(which int, newValue *Itimerval, oldValue *Itimerval) (err error)
+
+// MakeItimerval creates an Itimerval from interval and value durations.
+func MakeItimerval(interval, value time.Duration) Itimerval {
+ return Itimerval{
+ Interval: NsecToTimeval(interval.Nanoseconds()),
+ Value: NsecToTimeval(value.Nanoseconds()),
+ }
+}
+
+// A value which may be passed to the which parameter for Getitimer and
+// Setitimer.
+type ItimerWhich int
+
+// Possible which values for Getitimer and Setitimer.
+const (
+ ItimerReal ItimerWhich = ITIMER_REAL
+ ItimerVirtual ItimerWhich = ITIMER_VIRTUAL
+ ItimerProf ItimerWhich = ITIMER_PROF
+)
+
+// Getitimer wraps getitimer(2) to return the current value of the timer
+// specified by which.
+func Getitimer(which ItimerWhich) (Itimerval, error) {
+ var it Itimerval
+ if err := getitimer(int(which), &it); err != nil {
+ return Itimerval{}, err
+ }
+
+ return it, nil
+}
+
+// Setitimer wraps setitimer(2) to arm or disarm the timer specified by which.
+// It returns the previous value of the timer.
+//
+// If the Itimerval argument is the zero value, the timer will be disarmed.
+func Setitimer(which ItimerWhich, it Itimerval) (Itimerval, error) {
+ var prev Itimerval
+ if err := setitimer(int(which), &it, &prev); err != nil {
+ return Itimerval{}, err
+ }
+
+ return prev, nil
+}
+
/*
* Unimplemented
*/
// AfsSyscall
-// Alarm
// ArchPrctl
// Brk
// ClockNanosleep
@@ -2314,7 +2375,6 @@ type RemoteIovec struct {
// GetMempolicy
// GetRobustList
// GetThreadArea
-// Getitimer
// Getpmsg
// IoCancel
// IoDestroy
@@ -2375,10 +2435,6 @@ type RemoteIovec struct {
// SetRobustList
// SetThreadArea
// SetTidAddress
-// Shmat
-// Shmctl
-// Shmdt
-// Shmget
// Sigaltstack
// Swapoff
// Swapon
@@ -2396,5 +2452,4 @@ type RemoteIovec struct {
// Vfork
// Vhangup
// Vserver
-// Waitid
// _Sysctl
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-01 08:33:22 +0000