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