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syscall_linux_riscv64.go (6309B)

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