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 setTimespec(sec, nsec int64) Timespec {
15 return Timespec{Sec: int32(sec), Nsec: int32(nsec)}
18 func setTimeval(sec, usec int64) Timeval {
19 return Timeval{Sec: int32(sec), Usec: int32(usec)}
22 //sysnb pipe(p *[2]_C_int) (err error)
24 func Pipe(p []int) (err error) {
29 // Try pipe2 first for Android O, then try pipe for kernel 2.6.23.
39 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
41 func Pipe2(p []int, flags int) (err error) {
46 err = pipe2(&pp, flags)
52 // Underlying system call writes to newoffset via pointer.
53 // Implemented in assembly to avoid allocation.
54 func seek(fd int, offset int64, whence int) (newoffset int64, err syscall.Errno)
56 func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
57 newoffset, errno := seek(fd, offset, whence)
64 //sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error)
65 //sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
66 //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
67 //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
68 //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
69 //sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
70 //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
71 //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
72 //sysnb socket(domain int, typ int, proto int) (fd int, err error)
73 //sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
74 //sysnb getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error)
75 //sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error)
76 //sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error)
77 //sysnb socketpair(domain int, typ int, flags int, fd *[2]int32) (err error)
78 //sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error)
79 //sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error)
81 // 64-bit file system and 32-bit uid calls
82 // (16-bit uid calls are not always supported in newer kernels)
83 //sys Dup2(oldfd int, newfd int) (err error)
84 //sysnb EpollCreate(size int) (fd int, err error)
85 //sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error)
86 //sys Fchown(fd int, uid int, gid int) (err error) = SYS_FCHOWN32
87 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
88 //sys Fstatat(dirfd int, path string, stat *Stat_t, flags int) (err error) = SYS_FSTATAT64
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 Pause() (err error)
98 //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error)
99 //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
100 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
101 //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32
102 //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32
103 //sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32
104 //sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32
105 //sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32
106 //sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32
107 //sys Shutdown(fd int, how int) (err error)
108 //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
109 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
110 //sys Ustat(dev int, ubuf *Ustat_t) (err error)
112 //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
113 //sysnb Gettimeofday(tv *Timeval) (err error)
115 func Time(t *Time_t) (Time_t, error) {
117 err := Gettimeofday(&tv)
124 return Time_t(tv.Sec), nil
127 func Utime(path string, buf *Utimbuf) error {
132 return Utimes(path, tv)
135 //sys utimes(path string, times *[2]Timeval) (err error)
137 //sys Pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64
138 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = SYS_PWRITE64
139 //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
140 //sys Ftruncate(fd int, length int64) (err error) = SYS_FTRUNCATE64
142 func Fadvise(fd int, offset int64, length int64, advice int) (err error) {
143 _, _, e1 := Syscall6(SYS_ARM_FADVISE64_64, uintptr(fd), uintptr(advice), uintptr(offset), uintptr(offset>>32), uintptr(length), uintptr(length>>32))
150 //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
152 func Fstatfs(fd int, buf *Statfs_t) (err error) {
153 _, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
160 func Statfs(path string, buf *Statfs_t) (err error) {
161 pathp, err := BytePtrFromString(path)
165 _, _, e := Syscall(SYS_STATFS64, uintptr(unsafe.Pointer(pathp)), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
172 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {
173 page := uintptr(offset / 4096)
174 if offset != int64(page)*4096 {
177 return mmap2(addr, length, prot, flags, fd, page)
180 type rlimit32 struct {
185 //sysnb getrlimit(resource int, rlim *rlimit32) (err error) = SYS_UGETRLIMIT
187 const rlimInf32 = ^uint32(0)
188 const rlimInf64 = ^uint64(0)
190 func Getrlimit(resource int, rlim *Rlimit) (err error) {
191 err = prlimit(0, resource, nil, rlim)
197 err = getrlimit(resource, &rl)
202 if rl.Cur == rlimInf32 {
205 rlim.Cur = uint64(rl.Cur)
208 if rl.Max == rlimInf32 {
211 rlim.Max = uint64(rl.Max)
216 //sysnb setrlimit(resource int, rlim *rlimit32) (err error) = SYS_SETRLIMIT
218 func Setrlimit(resource int, rlim *Rlimit) (err error) {
219 err = prlimit(0, resource, rlim, nil)
225 if rlim.Cur == rlimInf64 {
227 } else if rlim.Cur < uint64(rlimInf32) {
228 rl.Cur = uint32(rlim.Cur)
232 if rlim.Max == rlimInf64 {
234 } else if rlim.Max < uint64(rlimInf32) {
235 rl.Max = uint32(rlim.Max)
240 return setrlimit(resource, &rl)
243 func (r *PtraceRegs) PC() uint64 { return uint64(r.Uregs[15]) }
245 func (r *PtraceRegs) SetPC(pc uint64) { r.Uregs[15] = uint32(pc) }
247 func (iov *Iovec) SetLen(length int) {
248 iov.Len = uint32(length)
251 func (msghdr *Msghdr) SetControllen(length int) {
252 msghdr.Controllen = uint32(length)
255 func (cmsg *Cmsghdr) SetLen(length int) {
256 cmsg.Len = uint32(length)
259 //sys poll(fds *PollFd, nfds int, timeout int) (n int, err error)
261 func Poll(fds []PollFd, timeout int) (n int, err error) {
263 return poll(nil, 0, timeout)
265 return poll(&fds[0], len(fds), timeout)
268 //sys armSyncFileRange(fd int, flags int, off int64, n int64) (err error) = SYS_ARM_SYNC_FILE_RANGE
270 func SyncFileRange(fd int, off int64, n int64, flags int) error {
271 // The sync_file_range and arm_sync_file_range syscalls differ only in the
272 // order of their arguments.
273 return armSyncFileRange(fd, flags, off, n)