github.com/Andyfoo/golang/x/sys@v0.0.0-20190901054642-57c1bf301704/unix/syscall_linux_arm64.go (about)

     1  // Copyright 2015 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build arm64,linux
     6  
     7  package unix
     8  
     9  import "unsafe"
    10  
    11  func EpollCreate(size int) (fd int, err error) {
    12  	if size <= 0 {
    13  		return -1, EINVAL
    14  	}
    15  	return EpollCreate1(0)
    16  }
    17  
    18  //sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
    19  //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
    20  //sys	Fchown(fd int, uid int, gid int) (err error)
    21  //sys	Fstat(fd int, stat *Stat_t) (err error)
    22  //sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
    23  //sys	Fstatfs(fd int, buf *Statfs_t) (err error)
    24  //sys	Ftruncate(fd int, length int64) (err error)
    25  //sysnb	Getegid() (egid int)
    26  //sysnb	Geteuid() (euid int)
    27  //sysnb	Getgid() (gid int)
    28  //sysnb	Getrlimit(resource int, rlim *Rlimit) (err error)
    29  //sysnb	Getuid() (uid int)
    30  //sys	Listen(s int, n int) (err error)
    31  //sys	Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
    32  //sys	Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
    33  //sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
    34  //sys	Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
    35  
    36  func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
    37  	var ts *Timespec
    38  	if timeout != nil {
    39  		ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
    40  	}
    41  	return Pselect(nfd, r, w, e, ts, nil)
    42  }
    43  
    44  //sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
    45  //sys	Setfsgid(gid int) (err error)
    46  //sys	Setfsuid(uid int) (err error)
    47  //sysnb	Setregid(rgid int, egid int) (err error)
    48  //sysnb	Setresgid(rgid int, egid int, sgid int) (err error)
    49  //sysnb	Setresuid(ruid int, euid int, suid int) (err error)
    50  //sysnb	Setrlimit(resource int, rlim *Rlimit) (err error)
    51  //sysnb	Setreuid(ruid int, euid int) (err error)
    52  //sys	Shutdown(fd int, how int) (err error)
    53  //sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
    54  
    55  func Stat(path string, stat *Stat_t) (err error) {
    56  	return Fstatat(AT_FDCWD, path, stat, 0)
    57  }
    58  
    59  func Lchown(path string, uid int, gid int) (err error) {
    60  	return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW)
    61  }
    62  
    63  func Lstat(path string, stat *Stat_t) (err error) {
    64  	return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
    65  }
    66  
    67  //sys	Statfs(path string, buf *Statfs_t) (err error)
    68  //sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
    69  //sys	Truncate(path string, length int64) (err error)
    70  
    71  func Ustat(dev int, ubuf *Ustat_t) (err error) {
    72  	return ENOSYS
    73  }
    74  
    75  //sys	accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
    76  //sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
    77  //sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
    78  //sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
    79  //sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
    80  //sysnb	setgroups(n int, list *_Gid_t) (err error)
    81  //sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
    82  //sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
    83  //sysnb	socket(domain int, typ int, proto int) (fd int, err error)
    84  //sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
    85  //sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
    86  //sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
    87  //sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
    88  //sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
    89  //sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
    90  //sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
    91  //sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
    92  
    93  //sysnb	Gettimeofday(tv *Timeval) (err error)
    94  
    95  func setTimespec(sec, nsec int64) Timespec {
    96  	return Timespec{Sec: sec, Nsec: nsec}
    97  }
    98  
    99  func setTimeval(sec, usec int64) Timeval {
   100  	return Timeval{Sec: sec, Usec: usec}
   101  }
   102  
   103  func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
   104  	if tv == nil {
   105  		return utimensat(dirfd, path, nil, 0)
   106  	}
   107  
   108  	ts := []Timespec{
   109  		NsecToTimespec(TimevalToNsec(tv[0])),
   110  		NsecToTimespec(TimevalToNsec(tv[1])),
   111  	}
   112  	return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
   113  }
   114  
   115  func Time(t *Time_t) (Time_t, error) {
   116  	var tv Timeval
   117  	err := Gettimeofday(&tv)
   118  	if err != nil {
   119  		return 0, err
   120  	}
   121  	if t != nil {
   122  		*t = Time_t(tv.Sec)
   123  	}
   124  	return Time_t(tv.Sec), nil
   125  }
   126  
   127  func Utime(path string, buf *Utimbuf) error {
   128  	tv := []Timeval{
   129  		{Sec: buf.Actime},
   130  		{Sec: buf.Modtime},
   131  	}
   132  	return Utimes(path, tv)
   133  }
   134  
   135  func utimes(path string, tv *[2]Timeval) (err error) {
   136  	if tv == nil {
   137  		return utimensat(AT_FDCWD, path, nil, 0)
   138  	}
   139  
   140  	ts := []Timespec{
   141  		NsecToTimespec(TimevalToNsec(tv[0])),
   142  		NsecToTimespec(TimevalToNsec(tv[1])),
   143  	}
   144  	return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
   145  }
   146  
   147  func Pipe(p []int) (err error) {
   148  	if len(p) != 2 {
   149  		return EINVAL
   150  	}
   151  	var pp [2]_C_int
   152  	err = pipe2(&pp, 0)
   153  	p[0] = int(pp[0])
   154  	p[1] = int(pp[1])
   155  	return
   156  }
   157  
   158  //sysnb pipe2(p *[2]_C_int, flags int) (err error)
   159  
   160  func Pipe2(p []int, flags int) (err error) {
   161  	if len(p) != 2 {
   162  		return EINVAL
   163  	}
   164  	var pp [2]_C_int
   165  	err = pipe2(&pp, flags)
   166  	p[0] = int(pp[0])
   167  	p[1] = int(pp[1])
   168  	return
   169  }
   170  
   171  func (r *PtraceRegs) PC() uint64 { return r.Pc }
   172  
   173  func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }
   174  
   175  func (iov *Iovec) SetLen(length int) {
   176  	iov.Len = uint64(length)
   177  }
   178  
   179  func (msghdr *Msghdr) SetControllen(length int) {
   180  	msghdr.Controllen = uint64(length)
   181  }
   182  
   183  func (cmsg *Cmsghdr) SetLen(length int) {
   184  	cmsg.Len = uint64(length)
   185  }
   186  
   187  func InotifyInit() (fd int, err error) {
   188  	return InotifyInit1(0)
   189  }
   190  
   191  func Dup2(oldfd int, newfd int) (err error) {
   192  	return Dup3(oldfd, newfd, 0)
   193  }
   194  
   195  func Pause() error {
   196  	_, err := ppoll(nil, 0, nil, nil)
   197  	return err
   198  }
   199  
   200  func Poll(fds []PollFd, timeout int) (n int, err error) {
   201  	var ts *Timespec
   202  	if timeout >= 0 {
   203  		ts = new(Timespec)
   204  		*ts = NsecToTimespec(int64(timeout) * 1e6)
   205  	}
   206  	if len(fds) == 0 {
   207  		return ppoll(nil, 0, ts, nil)
   208  	}
   209  	return ppoll(&fds[0], len(fds), ts, nil)
   210  }
   211  
   212  //sys	kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
   213  
   214  func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
   215  	cmdlineLen := len(cmdline)
   216  	if cmdlineLen > 0 {
   217  		// Account for the additional NULL byte added by
   218  		// BytePtrFromString in kexecFileLoad. The kexec_file_load
   219  		// syscall expects a NULL-terminated string.
   220  		cmdlineLen++
   221  	}
   222  	return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
   223  }