github.com/alexis81/domosgo@v0.0.0-20191016125037-5aee90a434af/Domos/src/golang.org/x/sys/unix/syscall_linux_arm.go (about) 1 // Copyright 2009 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 // +build arm,linux 6 7 package unix 8 9 import ( 10 "syscall" 11 "unsafe" 12 ) 13 14 func setTimespec(sec, nsec int64) Timespec { 15 return Timespec{Sec: int32(sec), Nsec: int32(nsec)} 16 } 17 18 func setTimeval(sec, usec int64) Timeval { 19 return Timeval{Sec: int32(sec), Usec: int32(usec)} 20 } 21 22 func Pipe(p []int) (err error) { 23 if len(p) != 2 { 24 return EINVAL 25 } 26 var pp [2]_C_int 27 err = pipe2(&pp, 0) 28 p[0] = int(pp[0]) 29 p[1] = int(pp[1]) 30 return 31 } 32 33 //sysnb pipe2(p *[2]_C_int, flags int) (err error) 34 35 func Pipe2(p []int, flags int) (err error) { 36 if len(p) != 2 { 37 return EINVAL 38 } 39 var pp [2]_C_int 40 err = pipe2(&pp, flags) 41 p[0] = int(pp[0]) 42 p[1] = int(pp[1]) 43 return 44 } 45 46 // Underlying system call writes to newoffset via pointer. 47 // Implemented in assembly to avoid allocation. 48 func seek(fd int, offset int64, whence int) (newoffset int64, err syscall.Errno) 49 50 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { 51 newoffset, errno := seek(fd, offset, whence) 52 if errno != 0 { 53 return 0, errno 54 } 55 return newoffset, nil 56 } 57 58 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) 59 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 60 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 61 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 62 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 63 //sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32 64 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 65 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 66 //sysnb socket(domain int, typ int, proto int) (fd int, err error) 67 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 68 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 69 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 70 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 71 //sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) 72 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 73 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 74 75 // 64-bit file system and 32-bit uid calls 76 // (16-bit uid calls are not always supported in newer kernels) 77 //sys Dup2(oldfd int, newfd int) (err error) 78 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 79 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 80 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 81 //sysnb Getegid() (egid int) = SYS_GETEGID32 82 //sysnb Geteuid() (euid int) = SYS_GETEUID32 83 //sysnb Getgid() (gid int) = SYS_GETGID32 84 //sysnb Getuid() (uid int) = SYS_GETUID32 85 //sysnb InotifyInit() (fd int, err error) 86 //sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 87 //sys Listen(s int, n int) (err error) 88 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 89 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 90 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT 91 //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32 92 //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32 93 //sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32 94 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32 95 //sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32 96 //sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32 97 //sys Shutdown(fd int, how int) (err error) 98 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) 99 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 100 101 // Vsyscalls on amd64. 102 //sysnb Gettimeofday(tv *Timeval) (err error) 103 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) 104 //sys Pause() (err error) 105 106 func Time(t *Time_t) (Time_t, error) { 107 var tv Timeval 108 err := Gettimeofday(&tv) 109 if err != nil { 110 return 0, err 111 } 112 if t != nil { 113 *t = Time_t(tv.Sec) 114 } 115 return Time_t(tv.Sec), nil 116 } 117 118 func Utime(path string, buf *Utimbuf) error { 119 tv := []Timeval{ 120 {Sec: buf.Actime}, 121 {Sec: buf.Modtime}, 122 } 123 return Utimes(path, tv) 124 } 125 126 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 127 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 128 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 129 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 130 131 func Fadvise(fd int, offset int64, length int64, advice int) (err error) { 132 _, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32)) 133 if e1 != 0 { 134 err = errnoErr(e1) 135 } 136 return 137 } 138 139 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) 140 141 func Fstatfs(fd int, buf *Statfs_t) (err error) { 142 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 143 if e != 0 { 144 err = e 145 } 146 return 147 } 148 149 func Statfs(path string, buf *Statfs_t) (err error) { 150 pathp, err := BytePtrFromString(path) 151 if err != nil { 152 return err 153 } 154 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 155 if e != 0 { 156 err = e 157 } 158 return 159 } 160 161 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 162 page := uintptr(offset / 4096) 163 if offset != int64(page)*4096 { 164 return 0, EINVAL 165 } 166 return mmap2(addr, length, prot, flags, fd, page) 167 } 168 169 type rlimit32 struct { 170 Cur uint32 171 Max uint32 172 } 173 174 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT 175 176 const rlimInf32 = ^uint32(0) 177 const rlimInf64 = ^uint64(0) 178 179 func Getrlimit(resource int, rlim *Rlimit) (err error) { 180 err = prlimit(0, resource, nil, rlim) 181 if err != ENOSYS { 182 return err 183 } 184 185 rl := rlimit32{} 186 err = getrlimit(resource, &rl) 187 if err != nil { 188 return 189 } 190 191 if rl.Cur == rlimInf32 { 192 rlim.Cur = rlimInf64 193 } else { 194 rlim.Cur = uint64(rl.Cur) 195 } 196 197 if rl.Max == rlimInf32 { 198 rlim.Max = rlimInf64 199 } else { 200 rlim.Max = uint64(rl.Max) 201 } 202 return 203 } 204 205 //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT 206 207 func Setrlimit(resource int, rlim *Rlimit) (err error) { 208 err = prlimit(0, resource, rlim, nil) 209 if err != ENOSYS { 210 return err 211 } 212 213 rl := rlimit32{} 214 if rlim.Cur == rlimInf64 { 215 rl.Cur = rlimInf32 216 } else if rlim.Cur < uint64(rlimInf32) { 217 rl.Cur = uint32(rlim.Cur) 218 } else { 219 return EINVAL 220 } 221 if rlim.Max == rlimInf64 { 222 rl.Max = rlimInf32 223 } else if rlim.Max < uint64(rlimInf32) { 224 rl.Max = uint32(rlim.Max) 225 } else { 226 return EINVAL 227 } 228 229 return setrlimit(resource, &rl) 230 } 231 232 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) } 233 234 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) } 235 236 func (iov *Iovec) SetLen(length int) { 237 iov.Len = uint32(length) 238 } 239 240 func (msghdr *Msghdr) SetControllen(length int) { 241 msghdr.Controllen = uint32(length) 242 } 243 244 func (cmsg *Cmsghdr) SetLen(length int) { 245 cmsg.Len = uint32(length) 246 } 247 248 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) 249 250 func Poll(fds []PollFd, timeout int) (n int, err error) { 251 if len(fds) == 0 { 252 return poll(nil, 0, timeout) 253 } 254 return poll(&fds[0], len(fds), timeout) 255 }