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author | Péter Szilágyi <peterke@gmail.com> | 2016-02-11 22:16:52 +0800 |
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committer | Péter Szilágyi <peterke@gmail.com> | 2016-02-11 22:16:52 +0800 |
commit | b019f3ee29ce55c3d515ee8bafe0f4bb14221c0a (patch) | |
tree | 26e023be6c99a10e82a5a0ebadd1e42cefe9bd3c /Godeps/_workspace/src/golang.org/x/sys/unix/syscall_solaris.go | |
parent | b05e472c076d30035233d6a8b5fb3360b236e3ff (diff) | |
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Godeps: update all dependencies to latest code
Diffstat (limited to 'Godeps/_workspace/src/golang.org/x/sys/unix/syscall_solaris.go')
-rw-r--r-- | Godeps/_workspace/src/golang.org/x/sys/unix/syscall_solaris.go | 713 |
1 files changed, 713 insertions, 0 deletions
diff --git a/Godeps/_workspace/src/golang.org/x/sys/unix/syscall_solaris.go b/Godeps/_workspace/src/golang.org/x/sys/unix/syscall_solaris.go new file mode 100644 index 000000000..eb489b159 --- /dev/null +++ b/Godeps/_workspace/src/golang.org/x/sys/unix/syscall_solaris.go @@ -0,0 +1,713 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Solaris system calls. +// This file is compiled as ordinary Go code, +// but it is also input to mksyscall, +// which parses the //sys lines and generates system call stubs. +// Note that sometimes we use a lowercase //sys name and wrap +// it in our own nicer implementation, either here or in +// syscall_solaris.go or syscall_unix.go. + +package unix + +import ( + "sync/atomic" + "syscall" + "unsafe" +) + +// Implemented in runtime/syscall_solaris.go. +type syscallFunc uintptr + +func rawSysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno) +func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno) + +type SockaddrDatalink struct { + Family uint16 + Index uint16 + Type uint8 + Nlen uint8 + Alen uint8 + Slen uint8 + Data [244]int8 + raw RawSockaddrDatalink +} + +func clen(n []byte) int { + for i := 0; i < len(n); i++ { + if n[i] == 0 { + return i + } + } + return len(n) +} + +// ParseDirent parses up to max directory entries in buf, +// appending the names to names. It returns the number +// bytes consumed from buf, the number of entries added +// to names, and the new names slice. +func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) { + origlen := len(buf) + for max != 0 && len(buf) > 0 { + dirent := (*Dirent)(unsafe.Pointer(&buf[0])) + if dirent.Reclen == 0 { + buf = nil + break + } + buf = buf[dirent.Reclen:] + if dirent.Ino == 0 { // File absent in directory. + continue + } + bytes := (*[10000]byte)(unsafe.Pointer(&dirent.Name[0])) + var name = string(bytes[0:clen(bytes[:])]) + if name == "." || name == ".." { // Useless names + continue + } + max-- + count++ + names = append(names, name) + } + return origlen - len(buf), count, names +} + +func pipe() (r uintptr, w uintptr, err uintptr) + +func Pipe(p []int) (err error) { + if len(p) != 2 { + return EINVAL + } + r0, w0, e1 := pipe() + if e1 != 0 { + err = syscall.Errno(e1) + } + p[0], p[1] = int(r0), int(w0) + return +} + +func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { + if sa.Port < 0 || sa.Port > 0xFFFF { + return nil, 0, EINVAL + } + sa.raw.Family = AF_INET + p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) + p[0] = byte(sa.Port >> 8) + p[1] = byte(sa.Port) + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + return unsafe.Pointer(&sa.raw), SizeofSockaddrInet4, nil +} + +func (sa *SockaddrInet6) sockaddr() (unsafe.Pointer, _Socklen, error) { + if sa.Port < 0 || sa.Port > 0xFFFF { + return nil, 0, EINVAL + } + sa.raw.Family = AF_INET6 + p := (*[2]byte)(unsafe.Pointer(&sa.raw.Port)) + p[0] = byte(sa.Port >> 8) + p[1] = byte(sa.Port) + sa.raw.Scope_id = sa.ZoneId + for i := 0; i < len(sa.Addr); i++ { + sa.raw.Addr[i] = sa.Addr[i] + } + return unsafe.Pointer(&sa.raw), SizeofSockaddrInet6, nil +} + +func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) { + name := sa.Name + n := len(name) + if n >= len(sa.raw.Path) { + return nil, 0, EINVAL + } + sa.raw.Family = AF_UNIX + for i := 0; i < n; i++ { + sa.raw.Path[i] = int8(name[i]) + } + // length is family (uint16), name, NUL. + sl := _Socklen(2) + if n > 0 { + sl += _Socklen(n) + 1 + } + if sa.raw.Path[0] == '@' { + sa.raw.Path[0] = 0 + // Don't count trailing NUL for abstract address. + sl-- + } + + return unsafe.Pointer(&sa.raw), sl, nil +} + +//sys getsockname(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = libsocket.getsockname + +func Getsockname(fd int) (sa Sockaddr, err error) { + var rsa RawSockaddrAny + var len _Socklen = SizeofSockaddrAny + if err = getsockname(fd, &rsa, &len); err != nil { + return + } + return anyToSockaddr(&rsa) +} + +const ImplementsGetwd = true + +//sys Getcwd(buf []byte) (n int, err error) + +func Getwd() (wd string, err error) { + var buf [PathMax]byte + // Getcwd will return an error if it failed for any reason. + _, err = Getcwd(buf[0:]) + if err != nil { + return "", err + } + n := clen(buf[:]) + if n < 1 { + return "", EINVAL + } + return string(buf[:n]), nil +} + +/* + * Wrapped + */ + +//sysnb getgroups(ngid int, gid *_Gid_t) (n int, err error) +//sysnb setgroups(ngid int, gid *_Gid_t) (err error) + +func Getgroups() (gids []int, err error) { + n, err := getgroups(0, nil) + // Check for error and sanity check group count. Newer versions of + // Solaris allow up to 1024 (NGROUPS_MAX). + if n < 0 || n > 1024 { + if err != nil { + return nil, err + } + return nil, EINVAL + } else if n == 0 { + return nil, nil + } + + a := make([]_Gid_t, n) + n, err = getgroups(n, &a[0]) + if n == -1 { + return nil, err + } + gids = make([]int, n) + for i, v := range a[0:n] { + gids[i] = int(v) + } + return +} + +func Setgroups(gids []int) (err error) { + if len(gids) == 0 { + return setgroups(0, nil) + } + + a := make([]_Gid_t, len(gids)) + for i, v := range gids { + a[i] = _Gid_t(v) + } + return setgroups(len(a), &a[0]) +} + +func ReadDirent(fd int, buf []byte) (n int, err error) { + // Final argument is (basep *uintptr) and the syscall doesn't take nil. + // TODO(rsc): Can we use a single global basep for all calls? + return Getdents(fd, buf, new(uintptr)) +} + +// Wait status is 7 bits at bottom, either 0 (exited), +// 0x7F (stopped), or a signal number that caused an exit. +// The 0x80 bit is whether there was a core dump. +// An extra number (exit code, signal causing a stop) +// is in the high bits. + +type WaitStatus uint32 + +const ( + mask = 0x7F + core = 0x80 + shift = 8 + + exited = 0 + stopped = 0x7F +) + +func (w WaitStatus) Exited() bool { return w&mask == exited } + +func (w WaitStatus) ExitStatus() int { + if w&mask != exited { + return -1 + } + return int(w >> shift) +} + +func (w WaitStatus) Signaled() bool { return w&mask != stopped && w&mask != 0 } + +func (w WaitStatus) Signal() syscall.Signal { + sig := syscall.Signal(w & mask) + if sig == stopped || sig == 0 { + return -1 + } + return sig +} + +func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 } + +func (w WaitStatus) Stopped() bool { return w&mask == stopped && syscall.Signal(w>>shift) != SIGSTOP } + +func (w WaitStatus) Continued() bool { return w&mask == stopped && syscall.Signal(w>>shift) == SIGSTOP } + +func (w WaitStatus) StopSignal() syscall.Signal { + if !w.Stopped() { + return -1 + } + return syscall.Signal(w>>shift) & 0xFF +} + +func (w WaitStatus) TrapCause() int { return -1 } + +func wait4(pid uintptr, wstatus *WaitStatus, options uintptr, rusage *Rusage) (wpid uintptr, err uintptr) + +func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) { + r0, e1 := wait4(uintptr(pid), wstatus, uintptr(options), rusage) + if e1 != 0 { + err = syscall.Errno(e1) + } + return int(r0), err +} + +func gethostname() (name string, err uintptr) + +func Gethostname() (name string, err error) { + name, e1 := gethostname() + if e1 != 0 { + err = syscall.Errno(e1) + } + return name, err +} + +//sys utimes(path string, times *[2]Timeval) (err error) + +func Utimes(path string, tv []Timeval) (err error) { + if tv == nil { + return utimes(path, nil) + } + if len(tv) != 2 { + return EINVAL + } + return utimes(path, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) +} + +//sys utimensat(fd int, path string, times *[2]Timespec, flag int) (err error) + +func UtimesNano(path string, ts []Timespec) error { + if ts == nil { + return utimensat(AT_FDCWD, path, nil, 0) + } + if len(ts) != 2 { + return EINVAL + } + return utimensat(AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0) +} + +func UtimesNanoAt(dirfd int, path string, ts []Timespec, flags int) error { + if ts == nil { + return utimensat(dirfd, path, nil, flags) + } + if len(ts) != 2 { + return EINVAL + } + return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), flags) +} + +//sys fcntl(fd int, cmd int, arg int) (val int, err error) + +// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command. +func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error { + _, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procfcntl)), 3, uintptr(fd), uintptr(cmd), uintptr(unsafe.Pointer(lk)), 0, 0, 0) + if e1 != 0 { + return e1 + } + return nil +} + +//sys futimesat(fildes int, path *byte, times *[2]Timeval) (err error) + +func Futimesat(dirfd int, path string, tv []Timeval) error { + pathp, err := BytePtrFromString(path) + if err != nil { + return err + } + if tv == nil { + return futimesat(dirfd, pathp, nil) + } + if len(tv) != 2 { + return EINVAL + } + return futimesat(dirfd, pathp, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) +} + +// Solaris doesn't have an futimes function because it allows NULL to be +// specified as the path for futimesat. However, Go doesn't like +// NULL-style string interfaces, so this simple wrapper is provided. +func Futimes(fd int, tv []Timeval) error { + if tv == nil { + return futimesat(fd, nil, nil) + } + if len(tv) != 2 { + return EINVAL + } + return futimesat(fd, nil, (*[2]Timeval)(unsafe.Pointer(&tv[0]))) +} + +func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) { + switch rsa.Addr.Family { + case AF_UNIX: + pp := (*RawSockaddrUnix)(unsafe.Pointer(rsa)) + sa := new(SockaddrUnix) + // Assume path ends at NUL. + // This is not technically the Solaris semantics for + // abstract Unix domain sockets -- they are supposed + // to be uninterpreted fixed-size binary blobs -- but + // everyone uses this convention. + n := 0 + for n < len(pp.Path) && pp.Path[n] != 0 { + n++ + } + bytes := (*[10000]byte)(unsafe.Pointer(&pp.Path[0]))[0:n] + sa.Name = string(bytes) + return sa, nil + + case AF_INET: + pp := (*RawSockaddrInet4)(unsafe.Pointer(rsa)) + sa := new(SockaddrInet4) + p := (*[2]byte)(unsafe.Pointer(&pp.Port)) + sa.Port = int(p[0])<<8 + int(p[1]) + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, nil + + case AF_INET6: + pp := (*RawSockaddrInet6)(unsafe.Pointer(rsa)) + sa := new(SockaddrInet6) + p := (*[2]byte)(unsafe.Pointer(&pp.Port)) + sa.Port = int(p[0])<<8 + int(p[1]) + sa.ZoneId = pp.Scope_id + for i := 0; i < len(sa.Addr); i++ { + sa.Addr[i] = pp.Addr[i] + } + return sa, nil + } + return nil, EAFNOSUPPORT +} + +//sys accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) = libsocket.accept + +func Accept(fd int) (nfd int, sa Sockaddr, err error) { + var rsa RawSockaddrAny + var len _Socklen = SizeofSockaddrAny + nfd, err = accept(fd, &rsa, &len) + if nfd == -1 { + return + } + sa, err = anyToSockaddr(&rsa) + if err != nil { + Close(nfd) + nfd = 0 + } + return +} + +//sys recvmsg(s int, msg *Msghdr, flags int) (n int, err error) = libsocket.recvmsg + +func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { + var msg Msghdr + var rsa RawSockaddrAny + msg.Name = (*byte)(unsafe.Pointer(&rsa)) + msg.Namelen = uint32(SizeofSockaddrAny) + var iov Iovec + if len(p) > 0 { + iov.Base = (*int8)(unsafe.Pointer(&p[0])) + iov.SetLen(len(p)) + } + var dummy int8 + if len(oob) > 0 { + // receive at least one normal byte + if len(p) == 0 { + iov.Base = &dummy + iov.SetLen(1) + } + msg.Accrights = (*int8)(unsafe.Pointer(&oob[0])) + } + msg.Iov = &iov + msg.Iovlen = 1 + if n, err = recvmsg(fd, &msg, flags); n == -1 { + return + } + oobn = int(msg.Accrightslen) + // source address is only specified if the socket is unconnected + if rsa.Addr.Family != AF_UNSPEC { + from, err = anyToSockaddr(&rsa) + } + return +} + +func Sendmsg(fd int, p, oob []byte, to Sockaddr, flags int) (err error) { + _, err = SendmsgN(fd, p, oob, to, flags) + return +} + +//sys sendmsg(s int, msg *Msghdr, flags int) (n int, err error) = libsocket.sendmsg + +func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) { + var ptr unsafe.Pointer + var salen _Socklen + if to != nil { + ptr, salen, err = to.sockaddr() + if err != nil { + return 0, err + } + } + var msg Msghdr + msg.Name = (*byte)(unsafe.Pointer(ptr)) + msg.Namelen = uint32(salen) + var iov Iovec + if len(p) > 0 { + iov.Base = (*int8)(unsafe.Pointer(&p[0])) + iov.SetLen(len(p)) + } + var dummy int8 + if len(oob) > 0 { + // send at least one normal byte + if len(p) == 0 { + iov.Base = &dummy + iov.SetLen(1) + } + msg.Accrights = (*int8)(unsafe.Pointer(&oob[0])) + } + msg.Iov = &iov + msg.Iovlen = 1 + if n, err = sendmsg(fd, &msg, flags); err != nil { + return 0, err + } + if len(oob) > 0 && len(p) == 0 { + n = 0 + } + return n, nil +} + +//sys acct(path *byte) (err error) + +func Acct(path string) (err error) { + if len(path) == 0 { + // Assume caller wants to disable accounting. + return acct(nil) + } + + pathp, err := BytePtrFromString(path) + if err != nil { + return err + } + return acct(pathp) +} + +/* + * Expose the ioctl function + */ + +//sys ioctl(fd int, req int, arg uintptr) (err error) + +func IoctlSetInt(fd int, req int, value int) (err error) { + return ioctl(fd, req, uintptr(value)) +} + +func IoctlSetWinsize(fd int, req int, value *Winsize) (err error) { + return ioctl(fd, req, uintptr(unsafe.Pointer(value))) +} + +func IoctlSetTermios(fd int, req int, value *Termios) (err error) { + return ioctl(fd, req, uintptr(unsafe.Pointer(value))) +} + +func IoctlSetTermio(fd int, req int, value *Termio) (err error) { + return ioctl(fd, req, uintptr(unsafe.Pointer(value))) +} + +func IoctlGetInt(fd int, req int) (int, error) { + var value int + err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) + return value, err +} + +func IoctlGetWinsize(fd int, req int) (*Winsize, error) { + var value Winsize + err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) + return &value, err +} + +func IoctlGetTermios(fd int, req int) (*Termios, error) { + var value Termios + err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) + return &value, err +} + +func IoctlGetTermio(fd int, req int) (*Termio, error) { + var value Termio + err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) + return &value, err +} + +/* + * Exposed directly + */ +//sys Access(path string, mode uint32) (err error) +//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error) +//sys Chdir(path string) (err error) +//sys Chmod(path string, mode uint32) (err error) +//sys Chown(path string, uid int, gid int) (err error) +//sys Chroot(path string) (err error) +//sys Close(fd int) (err error) +//sys Creat(path string, mode uint32) (fd int, err error) +//sys Dup(fd int) (nfd int, err error) +//sys Dup2(oldfd int, newfd int) (err error) +//sys Exit(code int) +//sys Fchdir(fd int) (err error) +//sys Fchmod(fd int, mode uint32) (err error) +//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) +//sys Fchown(fd int, uid int, gid int) (err error) +//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) +//sys Fdatasync(fd int) (err error) +//sys Fpathconf(fd int, name int) (val int, err error) +//sys Fstat(fd int, stat *Stat_t) (err error) +//sys Getdents(fd int, buf []byte, basep *uintptr) (n int, err error) +//sysnb Getgid() (gid int) +//sysnb Getpid() (pid int) +//sysnb Getpgid(pid int) (pgid int, err error) +//sysnb Getpgrp() (pgid int, err error) +//sys Geteuid() (euid int) +//sys Getegid() (egid int) +//sys Getppid() (ppid int) +//sys Getpriority(which int, who int) (n int, err error) +//sysnb Getrlimit(which int, lim *Rlimit) (err error) +//sysnb Getrusage(who int, rusage *Rusage) (err error) +//sysnb Gettimeofday(tv *Timeval) (err error) +//sysnb Getuid() (uid int) +//sys Kill(pid int, signum syscall.Signal) (err error) +//sys Lchown(path string, uid int, gid int) (err error) +//sys Link(path string, link string) (err error) +//sys Listen(s int, backlog int) (err error) = libsocket.listen +//sys Lstat(path string, stat *Stat_t) (err error) +//sys Madvise(b []byte, advice int) (err error) +//sys Mkdir(path string, mode uint32) (err error) +//sys Mkdirat(dirfd int, path string, mode uint32) (err error) +//sys Mkfifo(path string, mode uint32) (err error) +//sys Mkfifoat(dirfd int, path string, mode uint32) (err error) +//sys Mknod(path string, mode uint32, dev int) (err error) +//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) +//sys Mlock(b []byte) (err error) +//sys Mlockall(flags int) (err error) +//sys Mprotect(b []byte, prot int) (err error) +//sys Munlock(b []byte) (err error) +//sys Munlockall() (err error) +//sys Nanosleep(time *Timespec, leftover *Timespec) (err error) +//sys Open(path string, mode int, perm uint32) (fd int, err error) +//sys Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error) +//sys Pathconf(path string, name int) (val int, err error) +//sys Pause() (err error) +//sys Pread(fd int, p []byte, offset int64) (n int, err error) +//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) +//sys read(fd int, p []byte) (n int, err error) +//sys Readlink(path string, buf []byte) (n int, err error) +//sys Rename(from string, to string) (err error) +//sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) +//sys Rmdir(path string) (err error) +//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = lseek +//sysnb Setegid(egid int) (err error) +//sysnb Seteuid(euid int) (err error) +//sysnb Setgid(gid int) (err error) +//sys Sethostname(p []byte) (err error) +//sysnb Setpgid(pid int, pgid int) (err error) +//sys Setpriority(which int, who int, prio int) (err error) +//sysnb Setregid(rgid int, egid int) (err error) +//sysnb Setreuid(ruid int, euid int) (err error) +//sysnb Setrlimit(which int, lim *Rlimit) (err error) +//sysnb Setsid() (pid int, err error) +//sysnb Setuid(uid int) (err error) +//sys Shutdown(s int, how int) (err error) = libsocket.shutdown +//sys Stat(path string, stat *Stat_t) (err error) +//sys Symlink(path string, link string) (err error) +//sys Sync() (err error) +//sysnb Times(tms *Tms) (ticks uintptr, err error) +//sys Truncate(path string, length int64) (err error) +//sys Fsync(fd int) (err error) +//sys Ftruncate(fd int, length int64) (err error) +//sys Umask(mask int) (oldmask int) +//sysnb Uname(buf *Utsname) (err error) +//sys Unmount(target string, flags int) (err error) = libc.umount +//sys Unlink(path string) (err error) +//sys Unlinkat(dirfd int, path string, flags int) (err error) +//sys Ustat(dev int, ubuf *Ustat_t) (err error) +//sys Utime(path string, buf *Utimbuf) (err error) +//sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.bind +//sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.connect +//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error) +//sys munmap(addr uintptr, length uintptr) (err error) +//sys sendto(s int, buf []byte, flags int, to unsafe.Pointer, addrlen _Socklen) (err error) = libsocket.sendto +//sys socket(domain int, typ int, proto int) (fd int, err error) = libsocket.socket +//sysnb socketpair(domain int, typ int, proto int, fd *[2]int32) (err error) = libsocket.socketpair +//sys write(fd int, p []byte) (n int, err error) +//sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) = libsocket.getsockopt +//sysnb getpeername(fd int, rsa *RawSockaddrAny, addrlen *_Socklen) (err error) = libsocket.getpeername +//sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error) = libsocket.setsockopt +//sys recvfrom(fd int, p []byte, flags int, from *RawSockaddrAny, fromlen *_Socklen) (n int, err error) = libsocket.recvfrom + +func readlen(fd int, buf *byte, nbuf int) (n int, err error) { + r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procread)), 3, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf), 0, 0, 0) + n = int(r0) + if e1 != 0 { + err = e1 + } + return +} + +func writelen(fd int, buf *byte, nbuf int) (n int, err error) { + r0, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procwrite)), 3, uintptr(fd), uintptr(unsafe.Pointer(buf)), uintptr(nbuf), 0, 0, 0) + n = int(r0) + if e1 != 0 { + err = e1 + } + return +} + +var mapper = &mmapper{ + active: make(map[*byte][]byte), + mmap: mmap, + munmap: munmap, +} + +func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) { + return mapper.Mmap(fd, offset, length, prot, flags) +} + +func Munmap(b []byte) (err error) { + return mapper.Munmap(b) +} + +//sys sysconf(name int) (n int64, err error) + +// pageSize caches the value of Getpagesize, since it can't change +// once the system is booted. +var pageSize int64 // accessed atomically + +func Getpagesize() int { + n := atomic.LoadInt64(&pageSize) + if n == 0 { + n, _ = sysconf(_SC_PAGESIZE) + atomic.StoreInt64(&pageSize, n) + } + return int(n) +} |