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// Copyright 2013 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.
// +build darwin linux
package interp
import "syscall"
func init() {
for k, v := range map[string]externalFn{
"os.Pipe": ext۰os۰Pipe,
"syscall.Close": ext۰syscall۰Close,
"syscall.Exit": ext۰syscall۰Exit,
"syscall.Fchown": ext۰syscall۰Fchown,
"syscall.Fstat": ext۰syscall۰Fstat,
"syscall.Ftruncate": ext۰syscall۰Ftruncate,
"syscall.Getpid": ext۰syscall۰Getpid,
"syscall.Getwd": ext۰syscall۰Getwd,
"syscall.Kill": ext۰syscall۰Kill,
"syscall.Link": ext۰syscall۰Link,
"syscall.Lstat": ext۰syscall۰Lstat,
"syscall.Mkdir": ext۰syscall۰Mkdir,
"syscall.Open": ext۰syscall۰Open,
"syscall.ParseDirent": ext۰syscall۰ParseDirent,
"syscall.RawSyscall": ext۰syscall۰RawSyscall,
"syscall.Read": ext۰syscall۰Read,
"syscall.ReadDirent": ext۰syscall۰ReadDirent,
"syscall.Readlink": ext۰syscall۰Readlink,
"syscall.Rmdir": ext۰syscall۰Rmdir,
"syscall.Seek": ext۰syscall۰Seek,
"syscall.Stat": ext۰syscall۰Stat,
"syscall.Symlink": ext۰syscall۰Symlink,
"syscall.Write": ext۰syscall۰Write,
"syscall.Unlink": ext۰syscall۰Unlink,
"syscall۰UtimesNano": ext۰syscall۰UtimesNano,
"syscall.setenv_c": ext۰nop,
"syscall.unsetenv_c": ext۰nop,
"syscall.runtime_envs": ext۰runtime۰environ,
} {
externals[k] = v
}
syswrite = syscall.Write
}
func ext۰os۰Pipe(fr *frame, args []value) value {
// func os.Pipe() (r *File, w *File, err error)
// The portable POSIX pipe(2) call is good enough for our needs.
var p [2]int
if err := syscall.Pipe(p[:]); err != nil {
// TODO(adonovan): fix: return an *os.SyscallError.
return tuple{nil, nil, wrapError(err)}
}
NewFile := fr.i.prog.ImportedPackage("os").Func("NewFile")
r := call(fr.i, fr, 0, NewFile, []value{uintptr(p[0]), "|0"})
w := call(fr.i, fr, 0, NewFile, []value{uintptr(p[1]), "|1"})
return tuple{r, w, wrapError(nil)}
}
// overridden on darwin
var fillStat = func(st *syscall.Stat_t, stat structure) {
stat[0] = st.Dev
stat[1] = st.Ino
stat[2] = st.Nlink
stat[3] = st.Mode
stat[4] = st.Uid
stat[5] = st.Gid
stat[7] = st.Rdev
stat[8] = st.Size
stat[9] = st.Blksize
stat[10] = st.Blocks
// TODO(adonovan): fix: copy Timespecs.
// stat[11] = st.Atim
// stat[12] = st.Mtim
// stat[13] = st.Ctim
}
func ext۰syscall۰Close(fr *frame, args []value) value {
// func Close(fd int) (err error)
return wrapError(syscall.Close(args[0].(int)))
}
func ext۰syscall۰Exit(fr *frame, args []value) value {
panic(exitPanic(args[0].(int)))
}
func ext۰syscall۰Fchown(fr *frame, args []value) value {
fd := args[0].(int)
uid := args[1].(int)
gid := args[2].(int)
return wrapError(syscall.Fchown(fd, uid, gid))
}
func ext۰syscall۰Fstat(fr *frame, args []value) value {
// func Fstat(fd int, stat *Stat_t) (err error)
fd := args[0].(int)
stat := (*args[1].(*value)).(structure)
var st syscall.Stat_t
err := syscall.Fstat(fd, &st)
fillStat(&st, stat)
return wrapError(err)
}
func ext۰syscall۰Ftruncate(fr *frame, args []value) value {
fd := args[0].(int)
length := args[1].(int64)
return wrapError(syscall.Ftruncate(fd, length))
}
func ext۰syscall۰Getpid(fr *frame, args []value) value {
return syscall.Getpid()
}
func ext۰syscall۰Getwd(fr *frame, args []value) value {
s, err := syscall.Getwd()
return tuple{s, wrapError(err)}
}
func ext۰syscall۰Kill(fr *frame, args []value) value {
// func Kill(pid int, sig Signal) (err error)
return wrapError(syscall.Kill(args[0].(int), syscall.Signal(args[1].(int))))
}
func ext۰syscall۰Link(fr *frame, args []value) value {
path := args[0].(string)
link := args[1].(string)
return wrapError(syscall.Link(path, link))
}
func ext۰syscall۰Lstat(fr *frame, args []value) value {
// func Lstat(name string, stat *Stat_t) (err error)
name := args[0].(string)
stat := (*args[1].(*value)).(structure)
var st syscall.Stat_t
err := syscall.Lstat(name, &st)
fillStat(&st, stat)
return wrapError(err)
}
func ext۰syscall۰Mkdir(fr *frame, args []value) value {
path := args[0].(string)
mode := args[1].(uint32)
return wrapError(syscall.Mkdir(path, mode))
}
func ext۰syscall۰Open(fr *frame, args []value) value {
// func Open(path string, mode int, perm uint32) (fd int, err error) {
path := args[0].(string)
mode := args[1].(int)
perm := args[2].(uint32)
fd, err := syscall.Open(path, mode, perm)
return tuple{fd, wrapError(err)}
}
func ext۰syscall۰ParseDirent(fr *frame, args []value) value {
// func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string)
max := args[1].(int)
var names []string
for _, iname := range args[2].([]value) {
names = append(names, iname.(string))
}
consumed, count, newnames := syscall.ParseDirent(valueToBytes(args[0]), max, names)
var inewnames []value
for _, newname := range newnames {
inewnames = append(inewnames, newname)
}
return tuple{consumed, count, inewnames}
}
func ext۰syscall۰RawSyscall(fr *frame, args []value) value {
return tuple{uintptr(0), uintptr(0), uintptr(syscall.ENOSYS)}
}
func ext۰syscall۰Read(fr *frame, args []value) value {
// func Read(fd int, p []byte) (n int, err error)
fd := args[0].(int)
p := args[1].([]value)
b := make([]byte, len(p))
n, err := syscall.Read(fd, b)
for i := 0; i < n; i++ {
p[i] = b[i]
}
return tuple{n, wrapError(err)}
}
func ext۰syscall۰ReadDirent(fr *frame, args []value) value {
// func ReadDirent(fd int, buf []byte) (n int, err error)
fd := args[0].(int)
p := args[1].([]value)
b := make([]byte, len(p))
n, err := syscall.ReadDirent(fd, b)
for i := 0; i < n; i++ {
p[i] = b[i]
}
return tuple{n, wrapError(err)}
}
func ext۰syscall۰Readlink(fr *frame, args []value) value {
path := args[0].(string)
buf := valueToBytes(args[1])
n, err := syscall.Readlink(path, buf)
return tuple{n, wrapError(err)}
}
func ext۰syscall۰Rmdir(fr *frame, args []value) value {
return wrapError(syscall.Rmdir(args[0].(string)))
}
func ext۰syscall۰Seek(fr *frame, args []value) value {
fd := args[0].(int)
offset := args[1].(int64)
whence := args[2].(int)
new, err := syscall.Seek(fd, offset, whence)
return tuple{new, wrapError(err)}
}
func ext۰syscall۰Stat(fr *frame, args []value) value {
// func Stat(name string, stat *Stat_t) (err error)
name := args[0].(string)
stat := (*args[1].(*value)).(structure)
var st syscall.Stat_t
err := syscall.Stat(name, &st)
fillStat(&st, stat)
return wrapError(err)
}
func ext۰syscall۰Symlink(fr *frame, args []value) value {
path := args[0].(string)
link := args[1].(string)
return wrapError(syscall.Symlink(path, link))
}
func ext۰syscall۰Unlink(fr *frame, args []value) value {
return wrapError(syscall.Unlink(args[0].(string)))
}
func ext۰syscall۰UtimesNano(fr *frame, args []value) value {
path := args[0].(string)
var ts [2]syscall.Timespec
err := syscall.UtimesNano(path, ts[:])
// TODO(adonovan): copy the Timespecs into args[1]
return wrapError(err)
}
func ext۰syscall۰Write(fr *frame, args []value) value {
// func Write(fd int, p []byte) (n int, err error)
n, err := write(args[0].(int), valueToBytes(args[1]))
return tuple{n, wrapError(err)}
}
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