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// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package syscall
import "unsafe"
const (
_SYS_setgroups = SYS_SETGROUPS
_SYS_clone3 = 435
_SYS_faccessat2 = 439
_SYS_fchmodat2 = 452
)
//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
//sys Fchown(fd int, uid int, gid int) (err error)
//sys Fstatfs(fd int, buf *Statfs_t) (err error)
//sys Ftruncate(fd int, length int64) (err error)
//sysnb Getegid() (egid int)
//sysnb Geteuid() (euid int)
//sysnb Getgid() (gid int)
//sysnb Getuid() (uid int)
//sys Listen(s int, n int) (err error)
//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) = SYS_RENAMEAT2
//sys Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
//sys Setfsgid(gid int) (err error)
//sys Setfsuid(uid int) (err error)
//sys Shutdown(fd int, how int) (err error)
//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
//sys statx(dirfd int, path string, flags int, mask int, stat *statx_t) (err error)
// makedev makes C dev_t from major and minor numbers the glibc way:
// 0xMMMM_MMMM 0xmmmm_mmmm -> 0xMMMM_Mmmm_mmmM_MMmm
func makedev(major uint32, minor uint32) uint64 {
majorH := uint64(major >> 12)
majorL := uint64(major & 0xfff)
minorH := uint64(minor >> 8)
minorL := uint64(minor & 0xff)
return (majorH << 44) | (minorH << 20) | (majorL << 8) | minorL
}
func timespecFromStatxTimestamp(x statxTimestamp) Timespec {
return Timespec{
Sec: x.Sec,
Nsec: int64(x.Nsec),
}
}
func fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) {
var r statx_t
// Do it the glibc way, add AT_NO_AUTOMOUNT.
if err = statx(dirfd, path, _AT_NO_AUTOMOUNT|flags, _STATX_BASIC_STATS, &r); err != nil {
return err
}
stat.Dev = makedev(r.Dev_major, r.Dev_minor)
stat.Ino = r.Ino
stat.Mode = uint32(r.Mode)
stat.Nlink = r.Nlink
stat.Uid = r.Uid
stat.Gid = r.Gid
stat.Rdev = makedev(r.Rdev_major, r.Rdev_minor)
// hope we don't get to process files so large to overflow these size
// fields...
stat.Size = int64(r.Size)
stat.Blksize = int32(r.Blksize)
stat.Blocks = int64(r.Blocks)
stat.Atim = timespecFromStatxTimestamp(r.Atime)
stat.Mtim = timespecFromStatxTimestamp(r.Mtime)
stat.Ctim = timespecFromStatxTimestamp(r.Ctime)
return nil
}
func Fstatat(fd int, path string, stat *Stat_t, flags int) (err error) {
return fstatat(fd, path, stat, flags)
}
func Fstat(fd int, stat *Stat_t) (err error) {
return fstatat(fd, "", stat, _AT_EMPTY_PATH)
}
func Stat(path string, stat *Stat_t) (err error) {
return fstatat(_AT_FDCWD, path, stat, 0)
}
func Lchown(path string, uid int, gid int) (err error) {
return Fchownat(_AT_FDCWD, path, uid, gid, _AT_SYMLINK_NOFOLLOW)
}
func Lstat(path string, stat *Stat_t) (err error) {
return fstatat(_AT_FDCWD, path, stat, _AT_SYMLINK_NOFOLLOW)
}
//sys Statfs(path string, buf *Statfs_t) (err error)
//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
//sys Truncate(path string, length int64) (err error)
//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
//sysnb socket(domain int, typ int, proto int) (fd int, err error)
//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
//sys mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
type sigset_t struct {
X__val [16]uint64
}
//sys pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *sigset_t) (n int, err error) = SYS_PSELECT6
func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
var ts *Timespec
if timeout != nil {
ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
}
return pselect(nfd, r, w, e, ts, nil)
}
//sysnb Gettimeofday(tv *Timeval) (err error)
func setTimespec(sec, nsec int64) Timespec {
return Timespec{Sec: sec, Nsec: nsec}
}
func setTimeval(sec, usec int64) Timeval {
return Timeval{Sec: sec, Usec: usec}
}
func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
if tv == nil {
return utimensat(dirfd, path, nil, 0)
}
ts := []Timespec{
NsecToTimespec(TimevalToNsec(tv[0])),
NsecToTimespec(TimevalToNsec(tv[1])),
}
return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
}
func Time(t *Time_t) (Time_t, error) {
var tv Timeval
err := Gettimeofday(&tv)
if err != nil {
return 0, err
}
if t != nil {
*t = Time_t(tv.Sec)
}
return Time_t(tv.Sec), nil
}
func Utime(path string, buf *Utimbuf) error {
tv := []Timeval{
{Sec: buf.Actime},
{Sec: buf.Modtime},
}
return Utimes(path, tv)
}
func utimes(path string, tv *[2]Timeval) (err error) {
if tv == nil {
return utimensat(_AT_FDCWD, path, nil, 0)
}
ts := []Timespec{
NsecToTimespec(TimevalToNsec(tv[0])),
NsecToTimespec(TimevalToNsec(tv[1])),
}
return utimensat(_AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
}
// Getrlimit prefers the prlimit64 system call.
func Getrlimit(resource int, rlim *Rlimit) error {
return prlimit(0, resource, nil, rlim)
}
// setrlimit prefers the prlimit64 system call.
func setrlimit(resource int, rlim *Rlimit) error {
return prlimit(0, resource, rlim, nil)
}
//go:nosplit
func rawSetrlimit(resource int, rlim *Rlimit) Errno {
_, _, errno := RawSyscall6(SYS_PRLIMIT64, 0, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0, 0, 0)
return errno
}
func (r *PtraceRegs) GetEra() uint64 { return r.Era }
func (r *PtraceRegs) SetEra(era uint64) { r.Era = era }
func (iov *Iovec) SetLen(length int) {
iov.Len = uint64(length)
}
func (msghdr *Msghdr) SetControllen(length int) {
msghdr.Controllen = uint64(length)
}
func (cmsg *Cmsghdr) SetLen(length int) {
cmsg.Len = uint64(length)
}
func InotifyInit() (fd int, err error) {
return InotifyInit1(0)
}
//sys ppoll(fds *pollFd, nfds int, timeout *Timespec, sigmask *sigset_t) (n int, err error)
func Pause() error {
_, err := ppoll(nil, 0, nil, nil)
return err
}
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