1 // Copyright 2016 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 linux && (mips || mipsle) 6 7 package unix 8 9 import ( 10 "syscall" 11 "unsafe" 12 ) 13 14 func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) 15 16 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) 17 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_FADVISE64 18 //sys Fchown(fd int, uid int, gid int) (err error) 19 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 20 //sysnb Getegid() (egid int) 21 //sysnb Geteuid() (euid int) 22 //sysnb Getgid() (gid int) 23 //sysnb Getuid() (uid int) 24 //sys Lchown(path string, uid int, gid int) (err error) 25 //sys Listen(s int, n int) (err error) 26 //sys pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 27 //sys pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 28 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) 29 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT 30 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 31 //sys setfsgid(gid int) (prev int, err error) 32 //sys setfsuid(uid int) (prev int, err error) 33 //sys Shutdown(fd int, how int) (err error) 34 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) 35 //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error) 36 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 37 //sys Ustat(dev int, ubuf *Ustat_t) (err error) 38 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 39 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 40 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 41 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) 42 //sysnb setgroups(n int, list *_Gid_t) (err error) 43 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 44 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 45 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 46 //sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) 47 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 48 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 49 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 50 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 51 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 52 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 53 54 //sys Ioperm(from int, num int, on int) (err error) 55 //sys Iopl(level int) (err error) 56 57 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) 58 //sysnb Gettimeofday(tv *Timeval) (err error) 59 //sysnb Time(t *Time_t) (tt Time_t, err error) 60 //sys Utime(path string, buf *Utimbuf) (err error) 61 //sys utimes(path string, times *[2]Timeval) (err error) 62 63 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 64 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 65 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 66 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 67 68 //sys Pause() (err error) 69 70 func Fstatfs(fd int, buf *Statfs_t) (err error) { 71 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 72 if e != 0 { 73 err = errnoErr(e) 74 } 75 return 76 } 77 78 func Statfs(path string, buf *Statfs_t) (err error) { 79 p, err := BytePtrFromString(path) 80 if err != nil { 81 return err 82 } 83 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(p)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 84 if e != 0 { 85 err = errnoErr(e) 86 } 87 return 88 } 89 90 func Seek(fd int, offset int64, whence int) (off int64, err error) { 91 _, _, e := Syscall6(SYS__LLSEEK, uintptr(fd), uintptr(offset>>32), uintptr(offset), uintptr(unsafe.Pointer(&off)), uintptr(whence), 0) 92 if e != 0 { 93 err = errnoErr(e) 94 } 95 return 96 } 97 98 func setTimespec(sec, nsec int64) Timespec { 99 return Timespec{Sec: int32(sec), Nsec: int32(nsec)} 100 } 101 102 func setTimeval(sec, usec int64) Timeval { 103 return Timeval{Sec: int32(sec), Usec: int32(usec)} 104 } 105 106 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) 107 108 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 109 page := uintptr(offset / 4096) 110 if offset != int64(page)*4096 { 111 return 0, EINVAL 112 } 113 return mmap2(addr, length, prot, flags, fd, page) 114 } 115 116 const rlimInf32 = ^uint32(0) 117 const rlimInf64 = ^uint64(0) 118 119 type rlimit32 struct { 120 Cur uint32 121 Max uint32 122 } 123 124 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_GETRLIMIT 125 126 func Getrlimit(resource int, rlim *Rlimit) (err error) { 127 err = Prlimit(0, resource, nil, rlim) 128 if err != ENOSYS { 129 return err 130 } 131 132 rl := rlimit32{} 133 err = getrlimit(resource, &rl) 134 if err != nil { 135 return 136 } 137 138 if rl.Cur == rlimInf32 { 139 rlim.Cur = rlimInf64 140 } else { 141 rlim.Cur = uint64(rl.Cur) 142 } 143 144 if rl.Max == rlimInf32 { 145 rlim.Max = rlimInf64 146 } else { 147 rlim.Max = uint64(rl.Max) 148 } 149 return 150 } 151 152 func (r *PtraceRegs) PC() uint64 { return r.Epc } 153 154 func (r *PtraceRegs) SetPC(pc uint64) { r.Epc = pc } 155 156 func (iov *Iovec) SetLen(length int) { 157 iov.Len = uint32(length) 158 } 159 160 func (msghdr *Msghdr) SetControllen(length int) { 161 msghdr.Controllen = uint32(length) 162 } 163 164 func (msghdr *Msghdr) SetIovlen(length int) { 165 msghdr.Iovlen = uint32(length) 166 } 167 168 func (cmsg *Cmsghdr) SetLen(length int) { 169 cmsg.Len = uint32(length) 170 } 171 172 func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) { 173 rsa.Service_name_len = uint32(length) 174 } 175