diff options
Diffstat (limited to 'src/pkg/syscall/syscall_plan9.go')
| -rw-r--r-- | src/pkg/syscall/syscall_plan9.go | 344 |
1 files changed, 0 insertions, 344 deletions
diff --git a/src/pkg/syscall/syscall_plan9.go b/src/pkg/syscall/syscall_plan9.go deleted file mode 100644 index a8c340541..000000000 --- a/src/pkg/syscall/syscall_plan9.go +++ /dev/null @@ -1,344 +0,0 @@ -// Copyright 2011 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. - -// Plan 9 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. - -package syscall - -import "unsafe" - -const ImplementsGetwd = true - -// ErrorString implements Error's String method by returning itself. -type ErrorString string - -func (e ErrorString) Error() string { return string(e) } - -// NewError converts s to an ErrorString, which satisfies the Error interface. -func NewError(s string) error { return ErrorString(s) } - -func (e ErrorString) Temporary() bool { - return e == EINTR || e == EMFILE || e.Timeout() -} - -func (e ErrorString) Timeout() bool { - return e == EBUSY || e == ETIMEDOUT -} - -// A Note is a string describing a process note. -// It implements the os.Signal interface. -type Note string - -func (n Note) Signal() {} - -func (n Note) String() string { - return string(n) -} - -var ( - Stdin = 0 - Stdout = 1 - Stderr = 2 -) - -// For testing: clients can set this flag to force -// creation of IPv6 sockets to return EAFNOSUPPORT. -var SocketDisableIPv6 bool - -func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err ErrorString) -func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err ErrorString) -func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) -func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) - -func atoi(b []byte) (n uint) { - n = 0 - for i := 0; i < len(b); i++ { - n = n*10 + uint(b[i]-'0') - } - return -} - -func cstring(s []byte) string { - for i := range s { - if s[i] == 0 { - return string(s[0:i]) - } - } - return string(s) -} - -func errstr() string { - var buf [ERRMAX]byte - - RawSyscall(SYS_ERRSTR, uintptr(unsafe.Pointer(&buf[0])), uintptr(len(buf)), 0) - - buf[len(buf)-1] = 0 - return cstring(buf[:]) -} - -// Implemented in assembly to import from runtime. -func exit(code int) - -func Exit(code int) { exit(code) } - -func readnum(path string) (uint, error) { - var b [12]byte - - fd, e := Open(path, O_RDONLY) - if e != nil { - return 0, e - } - defer Close(fd) - - n, e := Pread(fd, b[:], 0) - - if e != nil { - return 0, e - } - - m := 0 - for ; m < n && b[m] == ' '; m++ { - } - - return atoi(b[m : n-1]), nil -} - -func Getpid() (pid int) { - n, _ := readnum("#c/pid") - return int(n) -} - -func Getppid() (ppid int) { - n, _ := readnum("#c/ppid") - return int(n) -} - -func Read(fd int, p []byte) (n int, err error) { - return Pread(fd, p, -1) -} - -func Write(fd int, p []byte) (n int, err error) { - return Pwrite(fd, p, -1) -} - -var ioSync int64 - -func Getwd() (wd string, err error) { - fd, e := Open(".", O_RDONLY) - - if e != nil { - return "", e - } - defer Close(fd) - - return Fd2path(fd) -} - -//sys fd2path(fd int, buf []byte) (err error) -func Fd2path(fd int) (path string, err error) { - var buf [512]byte - - e := fd2path(fd, buf[:]) - if e != nil { - return "", e - } - return cstring(buf[:]), nil -} - -//sys pipe(p *[2]_C_int) (err error) -func Pipe(p []int) (err error) { - if len(p) != 2 { - return NewError("bad arg in system call") - } - var pp [2]_C_int - err = pipe(&pp) - p[0] = int(pp[0]) - p[1] = int(pp[1]) - return -} - -// Underlying system call writes to newoffset via pointer. -// Implemented in assembly to avoid allocation. -func seek(placeholder uintptr, fd int, offset int64, whence int) (newoffset int64, err string) - -func Seek(fd int, offset int64, whence int) (newoffset int64, err error) { - newoffset, e := seek(0, fd, offset, whence) - - if newoffset == -1 { - err = NewError(e) - } - return -} - -func Mkdir(path string, mode uint32) (err error) { - fd, err := Create(path, O_RDONLY, DMDIR|mode) - - if fd != -1 { - Close(fd) - } - - return -} - -type Waitmsg struct { - Pid int - Time [3]uint32 - Msg string -} - -func (w Waitmsg) Exited() bool { return true } -func (w Waitmsg) Signaled() bool { return false } - -func (w Waitmsg) ExitStatus() int { - if len(w.Msg) == 0 { - // a normal exit returns no message - return 0 - } - return 1 -} - -//sys await(s []byte) (n int, err error) -func Await(w *Waitmsg) (err error) { - var buf [512]byte - var f [5][]byte - - n, err := await(buf[:]) - - if err != nil || w == nil { - return - } - - nf := 0 - p := 0 - for i := 0; i < n && nf < len(f)-1; i++ { - if buf[i] == ' ' { - f[nf] = buf[p:i] - p = i + 1 - nf++ - } - } - f[nf] = buf[p:] - nf++ - - if nf != len(f) { - return NewError("invalid wait message") - } - w.Pid = int(atoi(f[0])) - w.Time[0] = uint32(atoi(f[1])) - w.Time[1] = uint32(atoi(f[2])) - w.Time[2] = uint32(atoi(f[3])) - w.Msg = cstring(f[4]) - if w.Msg == "''" { - // await() returns '' for no error - w.Msg = "" - } - return -} - -func Unmount(name, old string) (err error) { - oldp, err := BytePtrFromString(old) - if err != nil { - return err - } - oldptr := uintptr(unsafe.Pointer(oldp)) - - var r0 uintptr - var e ErrorString - - // bind(2) man page: If name is zero, everything bound or mounted upon old is unbound or unmounted. - if name == "" { - r0, _, e = Syscall(SYS_UNMOUNT, _zero, oldptr, 0) - } else { - namep, err := BytePtrFromString(name) - if err != nil { - return err - } - r0, _, e = Syscall(SYS_UNMOUNT, uintptr(unsafe.Pointer(namep)), oldptr, 0) - } - - if int32(r0) == -1 { - err = e - } - return -} - -func Fchdir(fd int) (err error) { - path, err := Fd2path(fd) - - if err != nil { - return - } - - return Chdir(path) -} - -type Timespec struct { - Sec int32 - Nsec int32 -} - -type Timeval struct { - Sec int32 - Usec int32 -} - -func NsecToTimeval(nsec int64) (tv Timeval) { - nsec += 999 // round up to microsecond - tv.Usec = int32(nsec % 1e9 / 1e3) - tv.Sec = int32(nsec / 1e9) - return -} - -func DecodeBintime(b []byte) (nsec int64, err error) { - if len(b) != 8 { - return -1, NewError("bad /dev/bintime format") - } - nsec = int64(b[0])<<56 | - int64(b[1])<<48 | - int64(b[2])<<40 | - int64(b[3])<<32 | - int64(b[4])<<24 | - int64(b[5])<<16 | - int64(b[6])<<8 | - int64(b[7]) - return -} - -func Gettimeofday(tv *Timeval) error { - nsec, e := nanotime() - if e != nil { - return e - } - *tv = NsecToTimeval(nsec) - return e -} - -func Getegid() (egid int) { return -1 } -func Geteuid() (euid int) { return -1 } -func Getgid() (gid int) { return -1 } -func Getuid() (uid int) { return -1 } - -func Getgroups() (gids []int, err error) { - return make([]int, 0), nil -} - -//sys Dup(oldfd int, newfd int) (fd int, err error) -//sys Open(path string, mode int) (fd int, err error) -//sys Create(path string, mode int, perm uint32) (fd int, err error) -//sys Remove(path string) (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 Close(fd int) (err error) -//sys Chdir(path string) (err error) -//sys Bind(name string, old string, flag int) (err error) -//sys Mount(fd int, afd int, old string, flag int, aname string) (err error) -//sys Stat(path string, edir []byte) (n int, err error) -//sys Fstat(fd int, edir []byte) (n int, err error) -//sys Wstat(path string, edir []byte) (err error) -//sys Fwstat(fd int, edir []byte) (err error) |