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syscall_linux_arm64.go (6151B)

      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 //go:build arm64 && linux
      6 
      7 package unix
      8 
      9 import "unsafe"
     10 
     11 //sys	EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
     12 //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
     13 //sys	Fchown(fd int, uid int, gid int) (err error)
     14 //sys	Fstat(fd int, stat *Stat_t) (err error)
     15 //sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
     16 //sys	Fstatfs(fd int, buf *Statfs_t) (err error)
     17 //sys	Ftruncate(fd int, length int64) (err error)
     18 //sysnb	Getegid() (egid int)
     19 //sysnb	Geteuid() (euid int)
     20 //sysnb	Getgid() (gid int)
     21 //sysnb	getrlimit(resource int, rlim *Rlimit) (err error)
     22 //sysnb	Getuid() (uid int)
     23 //sys	Listen(s int, n int) (err error)
     24 //sys	MemfdSecret(flags int) (fd int, err error)
     25 //sys	pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
     26 //sys	pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
     27 //sys	Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
     28 //sys	Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
     29 
     30 func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
     31 	var ts *Timespec
     32 	if timeout != nil {
     33 		ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
     34 	}
     35 	return pselect6(nfd, r, w, e, ts, nil)
     36 }
     37 
     38 //sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
     39 //sys	setfsgid(gid int) (prev int, err error)
     40 //sys	setfsuid(uid int) (prev int, err error)
     41 //sys	Shutdown(fd int, how int) (err error)
     42 //sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
     43 
     44 func Stat(path string, stat *Stat_t) (err error) {
     45 	return Fstatat(AT_FDCWD, path, stat, 0)
     46 }
     47 
     48 func Lchown(path string, uid int, gid int) (err error) {
     49 	return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW)
     50 }
     51 
     52 func Lstat(path string, stat *Stat_t) (err error) {
     53 	return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
     54 }
     55 
     56 //sys	Statfs(path string, buf *Statfs_t) (err error)
     57 //sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
     58 //sys	Truncate(path string, length int64) (err error)
     59 
     60 func Ustat(dev int, ubuf *Ustat_t) (err error) {
     61 	return ENOSYS
     62 }
     63 
     64 //sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
     65 //sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
     66 //sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
     67 //sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
     68 //sysnb	setgroups(n int, list *_Gid_t) (err error)
     69 //sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
     70 //sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
     71 //sysnb	socket(domain int, typ int, proto int) (fd int, err error)
     72 //sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
     73 //sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
     74 //sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
     75 //sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
     76 //sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
     77 //sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
     78 //sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
     79 //sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
     80 
     81 //sysnb	Gettimeofday(tv *Timeval) (err error)
     82 
     83 func setTimespec(sec, nsec int64) Timespec {
     84 	return Timespec{Sec: sec, Nsec: nsec}
     85 }
     86 
     87 func setTimeval(sec, usec int64) Timeval {
     88 	return Timeval{Sec: sec, Usec: usec}
     89 }
     90 
     91 func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
     92 	if tv == nil {
     93 		return utimensat(dirfd, path, nil, 0)
     94 	}
     95 
     96 	ts := []Timespec{
     97 		NsecToTimespec(TimevalToNsec(tv[0])),
     98 		NsecToTimespec(TimevalToNsec(tv[1])),
     99 	}
    100 	return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
    101 }
    102 
    103 func Time(t *Time_t) (Time_t, error) {
    104 	var tv Timeval
    105 	err := Gettimeofday(&tv)
    106 	if err != nil {
    107 		return 0, err
    108 	}
    109 	if t != nil {
    110 		*t = Time_t(tv.Sec)
    111 	}
    112 	return Time_t(tv.Sec), nil
    113 }
    114 
    115 func Utime(path string, buf *Utimbuf) error {
    116 	tv := []Timeval{
    117 		{Sec: buf.Actime},
    118 		{Sec: buf.Modtime},
    119 	}
    120 	return Utimes(path, tv)
    121 }
    122 
    123 func utimes(path string, tv *[2]Timeval) (err error) {
    124 	if tv == nil {
    125 		return utimensat(AT_FDCWD, path, nil, 0)
    126 	}
    127 
    128 	ts := []Timespec{
    129 		NsecToTimespec(TimevalToNsec(tv[0])),
    130 		NsecToTimespec(TimevalToNsec(tv[1])),
    131 	}
    132 	return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
    133 }
    134 
    135 // Getrlimit prefers the prlimit64 system call. See issue 38604.
    136 func Getrlimit(resource int, rlim *Rlimit) error {
    137 	err := Prlimit(0, resource, nil, rlim)
    138 	if err != ENOSYS {
    139 		return err
    140 	}
    141 	return getrlimit(resource, rlim)
    142 }
    143 
    144 func (r *PtraceRegs) PC() uint64 { return r.Pc }
    145 
    146 func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }
    147 
    148 func (iov *Iovec) SetLen(length int) {
    149 	iov.Len = uint64(length)
    150 }
    151 
    152 func (msghdr *Msghdr) SetControllen(length int) {
    153 	msghdr.Controllen = uint64(length)
    154 }
    155 
    156 func (msghdr *Msghdr) SetIovlen(length int) {
    157 	msghdr.Iovlen = uint64(length)
    158 }
    159 
    160 func (cmsg *Cmsghdr) SetLen(length int) {
    161 	cmsg.Len = uint64(length)
    162 }
    163 
    164 func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
    165 	rsa.Service_name_len = uint64(length)
    166 }
    167 
    168 func Pause() error {
    169 	_, err := ppoll(nil, 0, nil, nil)
    170 	return err
    171 }
    172 
    173 //sys	kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
    174 
    175 func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
    176 	cmdlineLen := len(cmdline)
    177 	if cmdlineLen > 0 {
    178 		// Account for the additional NULL byte added by
    179 		// BytePtrFromString in kexecFileLoad. The kexec_file_load
    180 		// syscall expects a NULL-terminated string.
    181 		cmdlineLen++
    182 	}
    183 	return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
    184 }
    185 
    186 const SYS_FSTATAT = SYS_NEWFSTATAT