github.com/orangeji11/golang-sys-sw64@v0.0.0-20221228054527-b72799809e00/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 //sysnb EpollCreate(size int) (fd int, err error) 79 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) 80 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32 81 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64 82 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64 83 //sysnb Getegid() (egid int) = SYS_GETEGID32 84 //sysnb Geteuid() (euid int) = SYS_GETEUID32 85 //sysnb Getgid() (gid int) = SYS_GETGID32 86 //sysnb Getuid() (uid int) = SYS_GETUID32 87 //sysnb InotifyInit() (fd int, err error) 88 //sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32 89 //sys Listen(s int, n int) (err error) 90 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64 91 //sys Pause() (err error) 92 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64 93 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT 94 //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32 95 //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32 96 //sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32 97 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32 98 //sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32 99 //sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32 100 //sys Shutdown(fd int, how int) (err error) 101 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) 102 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64 103 //sys Ustat(dev int, ubuf *Ustat_t) (err error) 104 105 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error) 106 //sysnb Gettimeofday(tv *Timeval) (err error) 107 108 func Time(t *Time_t) (Time_t, error) { 109 var tv Timeval 110 err := Gettimeofday(&tv) 111 if err != nil { 112 return 0, err 113 } 114 if t != nil { 115 *t = Time_t(tv.Sec) 116 } 117 return Time_t(tv.Sec), nil 118 } 119 120 func Utime(path string, buf *Utimbuf) error { 121 tv := []Timeval{ 122 {Sec: buf.Actime}, 123 {Sec: buf.Modtime}, 124 } 125 return Utimes(path, tv) 126 } 127 128 //sys utimes(path string, times *[2]Timeval) (err error) 129 130 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64 131 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64 132 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64 133 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64 134 135 func Fadvise(fd int, offset int64, length int64, advice int) (err error) { 136 _, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32)) 137 if e1 != 0 { 138 err = errnoErr(e1) 139 } 140 return 141 } 142 143 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) 144 145 func Fstatfs(fd int, buf *Statfs_t) (err error) { 146 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 147 if e != 0 { 148 err = e 149 } 150 return 151 } 152 153 func Statfs(path string, buf *Statfs_t) (err error) { 154 pathp, err := BytePtrFromString(path) 155 if err != nil { 156 return err 157 } 158 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf))) 159 if e != 0 { 160 err = e 161 } 162 return 163 } 164 165 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) { 166 page := uintptr(offset / 4096) 167 if offset != int64(page)*4096 { 168 return 0, EINVAL 169 } 170 return mmap2(addr, length, prot, flags, fd, page) 171 } 172 173 type rlimit32 struct { 174 Cur uint32 175 Max uint32 176 } 177 178 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT 179 180 const rlimInf32 = ^uint32(0) 181 const rlimInf64 = ^uint64(0) 182 183 func Getrlimit(resource int, rlim *Rlimit) (err error) { 184 err = prlimit(0, resource, nil, rlim) 185 if err != ENOSYS { 186 return err 187 } 188 189 rl := rlimit32{} 190 err = getrlimit(resource, &rl) 191 if err != nil { 192 return 193 } 194 195 if rl.Cur == rlimInf32 { 196 rlim.Cur = rlimInf64 197 } else { 198 rlim.Cur = uint64(rl.Cur) 199 } 200 201 if rl.Max == rlimInf32 { 202 rlim.Max = rlimInf64 203 } else { 204 rlim.Max = uint64(rl.Max) 205 } 206 return 207 } 208 209 //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT 210 211 func Setrlimit(resource int, rlim *Rlimit) (err error) { 212 err = prlimit(0, resource, rlim, nil) 213 if err != ENOSYS { 214 return err 215 } 216 217 rl := rlimit32{} 218 if rlim.Cur == rlimInf64 { 219 rl.Cur = rlimInf32 220 } else if rlim.Cur < uint64(rlimInf32) { 221 rl.Cur = uint32(rlim.Cur) 222 } else { 223 return EINVAL 224 } 225 if rlim.Max == rlimInf64 { 226 rl.Max = rlimInf32 227 } else if rlim.Max < uint64(rlimInf32) { 228 rl.Max = uint32(rlim.Max) 229 } else { 230 return EINVAL 231 } 232 233 return setrlimit(resource, &rl) 234 } 235 236 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) } 237 238 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) } 239 240 func (iov *Iovec) SetLen(length int) { 241 iov.Len = uint32(length) 242 } 243 244 func (msghdr *Msghdr) SetControllen(length int) { 245 msghdr.Controllen = uint32(length) 246 } 247 248 func (cmsg *Cmsghdr) SetLen(length int) { 249 cmsg.Len = uint32(length) 250 } 251 252 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error) 253 254 func Poll(fds []PollFd, timeout int) (n int, err error) { 255 if len(fds) == 0 { 256 return poll(nil, 0, timeout) 257 } 258 return poll(&fds[0], len(fds), timeout) 259 } 260 261 //sys armSyncFileRange(fd int, flags int, off int64, n int64) (err error) = SYS_ARM_SYNC_FILE_RANGE 262 263 func SyncFileRange(fd int, off int64, n int64, flags int) error { 264 // The sync_file_range and arm_sync_file_range syscalls differ only in the 265 // order of their arguments. 266 return armSyncFileRange(fd, flags, off, n) 267 }