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.
14 func Getpagesize() int { return 4096 }
16 func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
18 func NsecToTimespec(nsec int64) (ts Timespec) {
19 ts.Sec = int32(nsec / 1e9)
20 ts.Nsec = int32(nsec % 1e9)
24 func NsecToTimeval(nsec int64) (tv Timeval) {
25 nsec += 999 // round up to microsecond
26 tv.Sec = int32(nsec / 1e9)
27 tv.Usec = int32(nsec % 1e9 / 1e3)
31 func Pipe(p []int) (err error) {
42 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
44 func Pipe2(p []int, flags int) (err error) {
49 err = pipe2(&pp, flags)
55 // Underlying system call writes to newoffset via pointer.
56 // Implemented in assembly to avoid allocation.
57 func seek(fd int, offset int64, whence int) (newoffset int64, err syscall.Errno)
59 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
60 newoffset, errno := seek(fd, offset, whence)
67 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
68 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
69 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
70 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
71 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
72 //sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
73 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
74 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
75 //sysnb socket(domain int, typ int, proto int) (fd int, err error)
76 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
77 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
78 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
79 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
80 //sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error)
81 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
82 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
84 // 64-bit file system and 32-bit uid calls
85 // (16-bit uid calls are not always supported in newer kernels)
86 //sys Dup2(oldfd int, newfd int) (err error)
87 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32
88 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
89 //sysnb Getegid() (egid int) = SYS_GETEGID32
90 //sysnb Geteuid() (euid int) = SYS_GETEUID32
91 //sysnb Getgid() (gid int) = SYS_GETGID32
92 //sysnb Getuid() (uid int) = SYS_GETUID32
93 //sysnb InotifyInit() (fd int, err error)
94 //sys Lchown(path string, uid int, gid int) (err error) = SYS_LCHOWN32
95 //sys Listen(s int, n int) (err error)
96 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
97 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
98 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
99 //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32
100 //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32
101 //sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32
102 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32
103 //sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32
104 //sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32
105 //sys Shutdown(fd int, how int) (err error)
106 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
107 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
109 // Vsyscalls on amd64.
110 //sysnb Gettimeofday(tv *Timeval) (err error)
111 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
112 //sys Pause() (err error)
114 func Time(t *Time_t) (Time_t, error) {
116 err := Gettimeofday(&tv)
123 return Time_t(tv.Sec), nil
126 func Utime(path string, buf *Utimbuf) error {
131 return Utimes(path, tv)
134 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
135 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
136 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
137 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
139 func Fadvise(fd int, offset int64, length int64, advice int) (err error) {
140 _, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32))
147 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
149 func Fstatfs(fd int, buf *Statfs_t) (err error) {
150 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
157 func Statfs(path string, buf *Statfs_t) (err error) {
158 pathp, err := BytePtrFromString(path)
162 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
169 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
170 page := uintptr(offset / 4096)
171 if offset != int64(page)*4096 {
174 return mmap2(addr, length, prot, flags, fd, page)
177 type rlimit32 struct {
182 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT
184 const rlimInf32 = ^uint32(0)
185 const rlimInf64 = ^uint64(0)
187 func Getrlimit(resource int, rlim *Rlimit) (err error) {
188 err = prlimit(0, resource, nil, rlim)
194 err = getrlimit(resource, &rl)
199 if rl.Cur == rlimInf32 {
202 rlim.Cur = uint64(rl.Cur)
205 if rl.Max == rlimInf32 {
208 rlim.Max = uint64(rl.Max)
213 //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
215 func Setrlimit(resource int, rlim *Rlimit) (err error) {
216 err = prlimit(0, resource, rlim, nil)
222 if rlim.Cur == rlimInf64 {
224 } else if rlim.Cur < uint64(rlimInf32) {
225 rl.Cur = uint32(rlim.Cur)
229 if rlim.Max == rlimInf64 {
231 } else if rlim.Max < uint64(rlimInf32) {
232 rl.Max = uint32(rlim.Max)
237 return setrlimit(resource, &rl)
240 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) }
242 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) }
244 func (iov *Iovec) SetLen(length int) {
245 iov.Len = uint32(length)
248 func (msghdr *Msghdr) SetControllen(length int) {
249 msghdr.Controllen = uint32(length)
252 func (cmsg *Cmsghdr) SetLen(length int) {
253 cmsg.Len = uint32(length)
256 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error)
258 func Poll(fds []PollFd, timeout int) (n int, err error) {
260 return poll(nil, 0, timeout)
262 return poll(&fds[0], len(fds), timeout)