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syscall_linux_riscv64.go (6262B)

      1 // Copyright 2018 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 riscv64 && linux
      6 
      7 package unix
      8 
      9 import "unsafe"
     10 
     11 //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64
     12 //sys	Fchown(fd int, uid int, gid int) (err error)
     13 //sys	Fstat(fd int, stat *Stat_t) (err error)
     14 //sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
     15 //sys	Fstatfs(fd int, buf *Statfs_t) (err error)
     16 //sys	Ftruncate(fd int, length int64) (err error)
     17 //sysnb	Getegid() (egid int)
     18 //sysnb	Geteuid() (euid int)
     19 //sysnb	Getgid() (gid int)
     20 //sysnb	Getrlimit(resource int, rlim *Rlimit) (err error)
     21 //sysnb	Getuid() (uid int)
     22 //sys	Listen(s int, n int) (err error)
     23 //sys	MemfdSecret(flags int) (fd int, err error)
     24 //sys	pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
     25 //sys	pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
     26 //sys	Seek(fd int, offset int64, whence int) (off int64, err error) = SYS_LSEEK
     27 
     28 func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
     29 	var ts *Timespec
     30 	if timeout != nil {
     31 		ts = &Timespec{Sec: timeout.Sec, Nsec: timeout.Usec * 1000}
     32 	}
     33 	return pselect6(nfd, r, w, e, ts, nil)
     34 }
     35 
     36 //sys	sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
     37 //sys	setfsgid(gid int) (prev int, err error)
     38 //sys	setfsuid(uid int) (prev int, err error)
     39 //sys	Shutdown(fd int, how int) (err error)
     40 //sys	Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
     41 
     42 func Stat(path string, stat *Stat_t) (err error) {
     43 	return Fstatat(AT_FDCWD, path, stat, 0)
     44 }
     45 
     46 func Lchown(path string, uid int, gid int) (err error) {
     47 	return Fchownat(AT_FDCWD, path, uid, gid, AT_SYMLINK_NOFOLLOW)
     48 }
     49 
     50 func Lstat(path string, stat *Stat_t) (err error) {
     51 	return Fstatat(AT_FDCWD, path, stat, AT_SYMLINK_NOFOLLOW)
     52 }
     53 
     54 //sys	Statfs(path string, buf *Statfs_t) (err error)
     55 //sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error)
     56 //sys	Truncate(path string, length int64) (err error)
     57 
     58 func Ustat(dev int, ubuf *Ustat_t) (err error) {
     59 	return ENOSYS
     60 }
     61 
     62 //sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
     63 //sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
     64 //sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
     65 //sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
     66 //sysnb	setgroups(n int, list *_Gid_t) (err error)
     67 //sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
     68 //sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
     69 //sysnb	socket(domain int, typ int, proto int) (fd int, err error)
     70 //sysnb	socketpair(domain int, typ int, proto int, fd *[2]int32) (err error)
     71 //sysnb	getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
     72 //sysnb	getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
     73 //sys	recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
     74 //sys	sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
     75 //sys	recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
     76 //sys	sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
     77 //sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error)
     78 
     79 //sysnb	Gettimeofday(tv *Timeval) (err error)
     80 
     81 func setTimespec(sec, nsec int64) Timespec {
     82 	return Timespec{Sec: sec, Nsec: nsec}
     83 }
     84 
     85 func setTimeval(sec, usec int64) Timeval {
     86 	return Timeval{Sec: sec, Usec: usec}
     87 }
     88 
     89 func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
     90 	if tv == nil {
     91 		return utimensat(dirfd, path, nil, 0)
     92 	}
     93 
     94 	ts := []Timespec{
     95 		NsecToTimespec(TimevalToNsec(tv[0])),
     96 		NsecToTimespec(TimevalToNsec(tv[1])),
     97 	}
     98 	return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
     99 }
    100 
    101 func Time(t *Time_t) (Time_t, error) {
    102 	var tv Timeval
    103 	err := Gettimeofday(&tv)
    104 	if err != nil {
    105 		return 0, err
    106 	}
    107 	if t != nil {
    108 		*t = Time_t(tv.Sec)
    109 	}
    110 	return Time_t(tv.Sec), nil
    111 }
    112 
    113 func Utime(path string, buf *Utimbuf) error {
    114 	if buf == nil {
    115 		return Utimes(path, nil)
    116 	}
    117 	tv := []Timeval{
    118 		{Sec: buf.Actime},
    119 		{Sec: buf.Modtime},
    120 	}
    121 	return Utimes(path, tv)
    122 }
    123 
    124 func utimes(path string, tv *[2]Timeval) (err error) {
    125 	if tv == nil {
    126 		return utimensat(AT_FDCWD, path, nil, 0)
    127 	}
    128 
    129 	ts := []Timespec{
    130 		NsecToTimespec(TimevalToNsec(tv[0])),
    131 		NsecToTimespec(TimevalToNsec(tv[1])),
    132 	}
    133 	return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
    134 }
    135 
    136 func (r *PtraceRegs) PC() uint64 { return r.Pc }
    137 
    138 func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }
    139 
    140 func (iov *Iovec) SetLen(length int) {
    141 	iov.Len = uint64(length)
    142 }
    143 
    144 func (msghdr *Msghdr) SetControllen(length int) {
    145 	msghdr.Controllen = uint64(length)
    146 }
    147 
    148 func (msghdr *Msghdr) SetIovlen(length int) {
    149 	msghdr.Iovlen = uint64(length)
    150 }
    151 
    152 func (cmsg *Cmsghdr) SetLen(length int) {
    153 	cmsg.Len = uint64(length)
    154 }
    155 
    156 func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
    157 	rsa.Service_name_len = uint64(length)
    158 }
    159 
    160 func Pause() error {
    161 	_, err := ppoll(nil, 0, nil, nil)
    162 	return err
    163 }
    164 
    165 func Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) {
    166 	return Renameat2(olddirfd, oldpath, newdirfd, newpath, 0)
    167 }
    168 
    169 //sys	kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error)
    170 
    171 func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error {
    172 	cmdlineLen := len(cmdline)
    173 	if cmdlineLen > 0 {
    174 		// Account for the additional NULL byte added by
    175 		// BytePtrFromString in kexecFileLoad. The kexec_file_load
    176 		// syscall expects a NULL-terminated string.
    177 		cmdlineLen++
    178 	}
    179 	return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags)
    180 }
    181 
    182 //sys	riscvHWProbe(pairs []RISCVHWProbePairs, cpuCount uintptr, cpus *CPUSet, flags uint) (err error)
    183 
    184 func RISCVHWProbe(pairs []RISCVHWProbePairs, set *CPUSet, flags uint) (err error) {
    185 	var setSize uintptr
    186 
    187 	if set != nil {
    188 		setSize = uintptr(unsafe.Sizeof(*set))
    189 	}
    190 	return riscvHWProbe(pairs, setSize, set, flags)
    191 }
    192 
    193 const SYS_FSTATAT = SYS_NEWFSTATAT