зеркало из https://github.com/golang/sys.git
237 строки
7.6 KiB
Go
237 строки
7.6 KiB
Go
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build linux && ppc
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// +build linux,ppc
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package unix
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import (
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"syscall"
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"unsafe"
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)
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//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
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//sys Fchown(fd int, uid int, gid int) (err error)
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//sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
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//sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
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//sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
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//sysnb Getegid() (egid int)
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//sysnb Geteuid() (euid int)
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//sysnb Getgid() (gid int)
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//sysnb Getuid() (uid int)
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//sys Ioperm(from int, num int, on int) (err error)
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//sys Iopl(level int) (err error)
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//sys Lchown(path string, uid int, gid int) (err error)
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//sys Listen(s int, n int) (err error)
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//sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
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//sys Pause() (err error)
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//sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
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//sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
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//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
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//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
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//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
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//sys setfsgid(gid int) (prev int, err error)
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//sys setfsuid(uid int) (prev int, err error)
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//sysnb Setregid(rgid int, egid int) (err error)
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//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
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//sysnb Setresuid(ruid int, euid int, suid int) (err error)
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//sysnb Setreuid(ruid int, euid int) (err error)
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//sys Shutdown(fd int, how int) (err error)
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//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
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//sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
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//sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
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//sys Ustat(dev int, ubuf *Ustat_t) (err error)
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//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
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//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
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//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
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//sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
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//sysnb setgroups(n int, list *_Gid_t) (err error)
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//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
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//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
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//sysnb socket(domain int, typ int, proto int) (fd int, err error)
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//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
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//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
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//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
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//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
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//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
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//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
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//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
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//sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
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//sysnb Gettimeofday(tv *Timeval) (err error)
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//sysnb Time(t *Time_t) (tt Time_t, err error)
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//sys Utime(path string, buf *Utimbuf) (err error)
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//sys utimes(path string, times *[2]Timeval) (err error)
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func Fadvise(fd int, offset int64, length int64, advice int) (err error) {
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_, _, e1 := Syscall6(SYS_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset>>32), uintptr(offset), uintptr(length>>32), uintptr(length))
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if e1 != 0 {
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err = errnoErr(e1)
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}
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return
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}
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func seek(fd int, offset int64, whence int) (int64, syscall.Errno) {
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var newoffset int64
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offsetLow := uint32(offset & 0xffffffff)
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offsetHigh := uint32((offset >> 32) & 0xffffffff)
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_, _, err := Syscall6(SYS__LLSEEK, uintptr(fd), uintptr(offsetHigh), uintptr(offsetLow), uintptr(unsafe.Pointer(&newoffset)), uintptr(whence), 0)
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return newoffset, err
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}
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func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
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newoffset, errno := seek(fd, offset, whence)
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if errno != 0 {
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return 0, errno
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}
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return newoffset, nil
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}
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func Fstatfs(fd int, buf *Statfs_t) (err error) {
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_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
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if e != 0 {
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err = e
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}
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return
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}
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func Statfs(path string, buf *Statfs_t) (err error) {
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pathp, err := BytePtrFromString(path)
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if err != nil {
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return err
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}
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_, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
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if e != 0 {
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err = e
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}
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return
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}
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//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
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func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
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page := uintptr(offset / 4096)
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if offset != int64(page)*4096 {
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return 0, EINVAL
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}
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return mmap2(addr, length, prot, flags, fd, page)
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}
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func setTimespec(sec, nsec int64) Timespec {
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return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
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}
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func setTimeval(sec, usec int64) Timeval {
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return Timeval{Sec: int32(sec), Usec: int32(usec)}
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}
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type rlimit32 struct {
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Cur uint32
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Max uint32
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}
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//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT
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const rlimInf32 = ^uint32(0)
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const rlimInf64 = ^uint64(0)
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func Getrlimit(resource int, rlim *Rlimit) (err error) {
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err = Prlimit(0, resource, nil, rlim)
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if err != ENOSYS {
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return err
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}
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rl := rlimit32{}
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err = getrlimit(resource, &rl)
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if err != nil {
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return
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}
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if rl.Cur == rlimInf32 {
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rlim.Cur = rlimInf64
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} else {
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rlim.Cur = uint64(rl.Cur)
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}
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if rl.Max == rlimInf32 {
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rlim.Max = rlimInf64
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} else {
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rlim.Max = uint64(rl.Max)
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}
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return
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}
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//sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
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func Setrlimit(resource int, rlim *Rlimit) (err error) {
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err = Prlimit(0, resource, rlim, nil)
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if err != ENOSYS {
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return err
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}
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rl := rlimit32{}
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if rlim.Cur == rlimInf64 {
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rl.Cur = rlimInf32
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} else if rlim.Cur < uint64(rlimInf32) {
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rl.Cur = uint32(rlim.Cur)
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} else {
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return EINVAL
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}
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if rlim.Max == rlimInf64 {
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rl.Max = rlimInf32
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} else if rlim.Max < uint64(rlimInf32) {
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rl.Max = uint32(rlim.Max)
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} else {
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return EINVAL
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}
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return setrlimit(resource, &rl)
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}
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func (r *PtraceRegs) PC() uint32 { return r.Nip }
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func (r *PtraceRegs) SetPC(pc uint32) { r.Nip = pc }
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func (iov *Iovec) SetLen(length int) {
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iov.Len = uint32(length)
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}
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func (msghdr *Msghdr) SetControllen(length int) {
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msghdr.Controllen = uint32(length)
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}
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func (msghdr *Msghdr) SetIovlen(length int) {
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msghdr.Iovlen = uint32(length)
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}
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func (cmsg *Cmsghdr) SetLen(length int) {
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cmsg.Len = uint32(length)
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}
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func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
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rsa.Service_name_len = uint32(length)
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}
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//sys syncFileRange2(fd int, flags int, off int64, n int64) (err error) = SYS_SYNC_FILE_RANGE2
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func SyncFileRange(fd int, off int64, n int64, flags int) error {
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// The sync_file_range and sync_file_range2 syscalls differ only in the
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// order of their arguments.
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return syncFileRange2(fd, flags, off, n)
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}
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//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
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func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
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cmdlineLen := len(cmdline)
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if cmdlineLen > 0 {
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// Account for the additional NULL byte added by
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// BytePtrFromString in kexecFileLoad. The kexec_file_load
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// syscall expects a NULL-terminated string.
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cmdlineLen++
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}
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return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
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}
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