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//go:build arm && linux 6// +build arm,linux 7 8package unix 9 10import ( 11 "unsafe" 12) 13 14func setTimespec(sec, nsec int64) Timespec { 15 return Timespec{Sec: int32(sec), Nsec: int32(nsec)} 16} 17 18func setTimeval(sec, usec int64) Timeval { 19 return Timeval{Sec: int32(sec), Usec: int32(usec)} 20} 21 22//sysnb pipe(p *[2]_C_int) (err error) 23 24func Pipe(p []int) (err error) { 25 if len(p) != 2 { 26 return EINVAL 27 } 28 var pp [2]_C_int 29 // Try pipe2 first for Android O, then try pipe for kernel 2.6.23. 30 err = pipe2(&pp, 0) 31 if err == ENOSYS { 32 err = pipe(&pp) 33 } 34 p[0] = int(pp[0]) 35 p[1] = int(pp[1]) 36 return 37} 38 39//sysnb pipe2(p *[2]_C_int, flags int) (err error) 40 41func Pipe2(p []int, flags int) (err error) { 42 if len(p) != 2 { 43 return EINVAL 44 } 45 var pp [2]_C_int 46 err = pipe2(&pp, flags) 47 p[0] = int(pp[0]) 48 p[1] = int(pp[1]) 49 return 50} 51 52func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { 53 newoffset, errno := seek(fd, offset, whence) 54 if errno != 0 { 55 return 0, errno 56 } 57 return newoffset, nil 58} 59 60//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) 61//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) 62//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 63//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) 64//sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32 65//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32 66//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) 67//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) 68//sysnb socket(domain int, typ int, proto int) (fd int, err error) 69//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 70//sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) 71//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) 72//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) 73//sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error) 74//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) 75//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) 76 77// 64-bit file system and 32-bit uid calls 78// (16-bit uid calls are not always supported in newer kernels) 79//sys dup2(oldfd int, newfd int) (err error) 80//sysnb EpollCreate(size int) (fd int, err error) 81//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) 82//sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 83//sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 84//sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 85//sysnb Getegid() (egid int) = SYS_GETEGID32 86//sysnb Geteuid() (euid int) = SYS_GETEUID32 87//sysnb Getgid() (gid int) = SYS_GETGID32 88//sysnb Getuid() (uid int) = SYS_GETUID32 89//sysnb InotifyInit() (fd int, err error) 90//sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 91//sys Listen(s int, n int) (err error) 92//sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 93//sys Pause() (err error) 94//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) 95//sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 96//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT 97//sys setfsgid(gid int) (prev int, err error) = SYS_SETFSGID32 98//sys setfsuid(uid int) (prev int, err error) = SYS_SETFSUID32 99//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32 100//sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32 101//sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32 102//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32 103//sys Shutdown(fd int, how int) (err error) 104//sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) 105//sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 106//sys Ustat(dev int, ubuf *Ustat_t) (err error) 107 108//sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) 109//sysnb Gettimeofday(tv *Timeval) (err error) 110 111func Time(t *Time_t) (Time_t, error) { 112 var tv Timeval 113 err := Gettimeofday(&tv) 114 if err != nil { 115 return 0, err 116 } 117 if t != nil { 118 *t = Time_t(tv.Sec) 119 } 120 return Time_t(tv.Sec), nil 121} 122 123func Utime(path string, buf *Utimbuf) error { 124 tv := []Timeval{ 125 {Sec: buf.Actime}, 126 {Sec: buf.Modtime}, 127 } 128 return Utimes(path, tv) 129} 130 131//sys utimes(path string, times *[2]Timeval) (err error) 132 133//sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 134//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 135//sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 136//sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 137 138func Fadvise(fd int, offset int64, length int64, advice int) (err error) { 139 _, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32)) 140 if e1 != 0 { 141 err = errnoErr(e1) 142 } 143 return 144} 145 146//sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) 147 148func Fstatfs(fd int, buf *Statfs_t) (err error) { 149 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 150 if e != 0 { 151 err = e 152 } 153 return 154} 155 156func Statfs(path string, buf *Statfs_t) (err error) { 157 pathp, err := BytePtrFromString(path) 158 if err != nil { 159 return err 160 } 161 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 162 if e != 0 { 163 err = e 164 } 165 return 166} 167 168func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 169 page := uintptr(offset / 4096) 170 if offset != int64(page)*4096 { 171 return 0, EINVAL 172 } 173 return mmap2(addr, length, prot, flags, fd, page) 174} 175 176type rlimit32 struct { 177 Cur uint32 178 Max uint32 179} 180 181//sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT 182 183const rlimInf32 = ^uint32(0) 184const rlimInf64 = ^uint64(0) 185 186func Getrlimit(resource int, rlim *Rlimit) (err error) { 187 err = prlimit(0, resource, nil, rlim) 188 if err != ENOSYS { 189 return err 190 } 191 192 rl := rlimit32{} 193 err = getrlimit(resource, &rl) 194 if err != nil { 195 return 196 } 197 198 if rl.Cur == rlimInf32 { 199 rlim.Cur = rlimInf64 200 } else { 201 rlim.Cur = uint64(rl.Cur) 202 } 203 204 if rl.Max == rlimInf32 { 205 rlim.Max = rlimInf64 206 } else { 207 rlim.Max = uint64(rl.Max) 208 } 209 return 210} 211 212//sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT 213 214func Setrlimit(resource int, rlim *Rlimit) (err error) { 215 err = prlimit(0, resource, rlim, nil) 216 if err != ENOSYS { 217 return err 218 } 219 220 rl := rlimit32{} 221 if rlim.Cur == rlimInf64 { 222 rl.Cur = rlimInf32 223 } else if rlim.Cur < uint64(rlimInf32) { 224 rl.Cur = uint32(rlim.Cur) 225 } else { 226 return EINVAL 227 } 228 if rlim.Max == rlimInf64 { 229 rl.Max = rlimInf32 230 } else if rlim.Max < uint64(rlimInf32) { 231 rl.Max = uint32(rlim.Max) 232 } else { 233 return EINVAL 234 } 235 236 return setrlimit(resource, &rl) 237} 238 239func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) } 240 241func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) } 242 243func (iov *Iovec) SetLen(length int) { 244 iov.Len = uint32(length) 245} 246 247func (msghdr *Msghdr) SetControllen(length int) { 248 msghdr.Controllen = uint32(length) 249} 250 251func (msghdr *Msghdr) SetIovlen(length int) { 252 msghdr.Iovlen = uint32(length) 253} 254 255func (cmsg *Cmsghdr) SetLen(length int) { 256 cmsg.Len = uint32(length) 257} 258 259func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) { 260 rsa.Service_name_len = uint32(length) 261} 262 263//sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) 264 265func Poll(fds []PollFd, timeout int) (n int, err error) { 266 if len(fds) == 0 { 267 return poll(nil, 0, timeout) 268 } 269 return poll(&fds[0], len(fds), timeout) 270} 271 272//sys armSyncFileRange(fd int, flags int, off int64, n int64) (err error) = SYS_ARM_SYNC_FILE_RANGE 273 274func SyncFileRange(fd int, off int64, n int64, flags int) error { 275 // The sync_file_range and arm_sync_file_range syscalls differ only in the 276 // order of their arguments. 277 return armSyncFileRange(fd, flags, off, n) 278} 279 280//sys kexecFileLoad(kernelFd int, initrdFd int, cmdlineLen int, cmdline string, flags int) (err error) 281 282func KexecFileLoad(kernelFd int, initrdFd int, cmdline string, flags int) error { 283 cmdlineLen := len(cmdline) 284 if cmdlineLen > 0 { 285 // Account for the additional NULL byte added by 286 // BytePtrFromString in kexecFileLoad. The kexec_file_load 287 // syscall expects a NULL-terminated string. 288 cmdlineLen++ 289 } 290 return kexecFileLoad(kernelFd, initrdFd, cmdlineLen, cmdline, flags) 291} 292