syscall: forkExec - todo

internal/lib/syscall/env_unix.go

@@ -14,6 +14,7 @@ import (
 
 	"github.com/goplus/llgo/c"
 	"github.com/goplus/llgo/c/os"
+	"github.com/goplus/llgo/c/syscall"
 )
 
 var (
@@ -116,18 +117,18 @@ func Getenv(key string) (value string, found bool) {
 func Setenv(key, value string) error {
 	envOnce.Do(copyenv)
 	if len(key) == 0 {
-		return EINVAL
+		return Errno(syscall.EINVAL)
 	}
 	for i := 0; i < len(key); i++ {
 		if key[i] == '=' || key[i] == 0 {
-			return EINVAL
+			return Errno(syscall.EINVAL)
 		}
 	}
 	// On Plan 9, null is used as a separator, eg in $path.
 	if runtime.GOOS != "plan9" {
 		for i := 0; i < len(value); i++ {
 			if value[i] == 0 {
-				return EINVAL
+				return Errno(syscall.EINVAL)
 			}
 		}
 	}

internal/lib/syscall/forkpipe.go

@@ -0,0 +1,39 @@
+// 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.
+
+//go:build aix || darwin
+
+package syscall
+
+import (
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/os"
+	"github.com/goplus/llgo/c/syscall"
+)
+
+// forkExecPipe opens a pipe and non-atomically sets O_CLOEXEC on both file
+// descriptors.
+func forkExecPipe(p []int) error {
+	err := Pipe(p)
+	if err != nil {
+		return err
+	}
+	ret := os.Fcntl(c.Int(p[0]), syscall.F_SETFD, syscall.FD_CLOEXEC)
+	if ret != 0 {
+		return Errno(ret)
+	}
+	ret = os.Fcntl(c.Int(p[1]), syscall.F_SETFD, syscall.FD_CLOEXEC)
+	if ret != 0 {
+		return Errno(ret)
+	}
+	return nil
+}
+
+func acquireForkLock() {
+	ForkLock.Lock()
+}
+
+func releaseForkLock() {
+	ForkLock.Unlock()
+}

internal/lib/syscall/syscall.go

@@ -137,7 +137,7 @@ func Stat(path string, stat *Stat_t) (err error) {
 
 func Pipe(p []int) (err error) {
 	if len(p) != 2 {
-		return EINVAL
+		return Errno(syscall.EINVAL)
 	}
 	var q [2]c.Int
 	ret := os.Pipe(&q)

internal/lib/syscall/syscall_bsd.go

@@ -12,6 +12,10 @@
 
 package syscall
 
+import (
+	"github.com/goplus/llgo/c/syscall"
+)
+
 func Getgroups() (gids []int, err error) {
 	/* TODO(xsw):
 	n, err := getgroups(0, nil)
@@ -106,9 +110,13 @@ func (w WaitStatus) Signal() Signal {
 
 func (w WaitStatus) CoreDump() bool { return w.Signaled() && w&core != 0 }
 
-func (w WaitStatus) Stopped() bool { return w&mask == stopped && Signal(w>>shift) != SIGSTOP }
+func (w WaitStatus) Stopped() bool {
+	return w&mask == stopped && Signal(w>>shift) != Signal(syscall.SIGSTOP)
+}
 
-func (w WaitStatus) Continued() bool { return w&mask == stopped && Signal(w>>shift) == SIGSTOP }
+func (w WaitStatus) Continued() bool {
+	return w&mask == stopped && Signal(w>>shift) == Signal(syscall.SIGSTOP)
+}
 
 func (w WaitStatus) StopSignal() Signal {
 	if !w.Stopped() {

internal/lib/syscall/syscall_unix.go

@@ -10,6 +10,7 @@ import (
 	"unsafe"
 
 	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/syscall"
 	"github.com/goplus/llgo/internal/lib/internal/oserror"
 )
 
@@ -29,11 +30,11 @@ func (e Errno) Error() string {
 func (e Errno) Is(target error) bool {
 	switch target {
 	case oserror.ErrPermission:
-		return e == EACCES || e == EPERM
+		return e == Errno(syscall.EACCES) || e == Errno(syscall.EPERM)
 	case oserror.ErrExist:
-		return e == EEXIST || e == ENOTEMPTY
+		return e == Errno(syscall.EEXIST) || e == Errno(syscall.ENOTEMPTY)
 	case oserror.ErrNotExist:
-		return e == ENOENT
+		return e == Errno(syscall.ENOENT)
 		// TODO(xsw): go1.21
 		// case errors.ErrUnsupported:
 		//	return e == ENOSYS || e == ENOTSUP || e == EOPNOTSUPP
@@ -42,11 +43,12 @@ func (e Errno) Is(target error) bool {
 }
 
 func (e Errno) Temporary() bool {
-	return e == EINTR || e == EMFILE || e == ENFILE || e.Timeout()
+	return e == Errno(syscall.EINTR) || e == Errno(syscall.EMFILE) ||
+		e == Errno(syscall.ENFILE) || e.Timeout()
 }
 
 func (e Errno) Timeout() bool {
-	return e == EAGAIN || e == EWOULDBLOCK || e == ETIMEDOUT
+	return e == Errno(syscall.EAGAIN) || e == Errno(syscall.EWOULDBLOCK) || e == Errno(syscall.ETIMEDOUT)
 }
 
 // A Signal is a number describing a process signal.

internal/lib/syscall/zerrors_darwin.go

@@ -1,165 +0,0 @@
-/*
- * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package syscall
-
-// Errors
-const (
-	E2BIG           = Errno(0x7)
-	EACCES          = Errno(0xd)
-	EADDRINUSE      = Errno(0x30)
-	EADDRNOTAVAIL   = Errno(0x31)
-	EAFNOSUPPORT    = Errno(0x2f)
-	EAGAIN          = Errno(0x23)
-	EALREADY        = Errno(0x25)
-	EAUTH           = Errno(0x50)
-	EBADARCH        = Errno(0x56)
-	EBADEXEC        = Errno(0x55)
-	EBADF           = Errno(0x9)
-	EBADMACHO       = Errno(0x58)
-	EBADMSG         = Errno(0x5e)
-	EBADRPC         = Errno(0x48)
-	EBUSY           = Errno(0x10)
-	ECANCELED       = Errno(0x59)
-	ECHILD          = Errno(0xa)
-	ECONNABORTED    = Errno(0x35)
-	ECONNREFUSED    = Errno(0x3d)
-	ECONNRESET      = Errno(0x36)
-	EDEADLK         = Errno(0xb)
-	EDESTADDRREQ    = Errno(0x27)
-	EDEVERR         = Errno(0x53)
-	EDOM            = Errno(0x21)
-	EDQUOT          = Errno(0x45)
-	EEXIST          = Errno(0x11)
-	EFAULT          = Errno(0xe)
-	EFBIG           = Errno(0x1b)
-	EFTYPE          = Errno(0x4f)
-	EHOSTDOWN       = Errno(0x40)
-	EHOSTUNREACH    = Errno(0x41)
-	EIDRM           = Errno(0x5a)
-	EILSEQ          = Errno(0x5c)
-	EINPROGRESS     = Errno(0x24)
-	EINTR           = Errno(0x4)
-	EINVAL          = Errno(0x16)
-	EIO             = Errno(0x5)
-	EISCONN         = Errno(0x38)
-	EISDIR          = Errno(0x15)
-	ELAST           = Errno(0x6a)
-	ELOOP           = Errno(0x3e)
-	EMFILE          = Errno(0x18)
-	EMLINK          = Errno(0x1f)
-	EMSGSIZE        = Errno(0x28)
-	EMULTIHOP       = Errno(0x5f)
-	ENAMETOOLONG    = Errno(0x3f)
-	ENEEDAUTH       = Errno(0x51)
-	ENETDOWN        = Errno(0x32)
-	ENETRESET       = Errno(0x34)
-	ENETUNREACH     = Errno(0x33)
-	ENFILE          = Errno(0x17)
-	ENOATTR         = Errno(0x5d)
-	ENOBUFS         = Errno(0x37)
-	ENODATA         = Errno(0x60)
-	ENODEV          = Errno(0x13)
-	ENOENT          = Errno(0x2)
-	ENOEXEC         = Errno(0x8)
-	ENOLCK          = Errno(0x4d)
-	ENOLINK         = Errno(0x61)
-	ENOMEM          = Errno(0xc)
-	ENOMSG          = Errno(0x5b)
-	ENOPOLICY       = Errno(0x67)
-	ENOPROTOOPT     = Errno(0x2a)
-	ENOSPC          = Errno(0x1c)
-	ENOSR           = Errno(0x62)
-	ENOSTR          = Errno(0x63)
-	ENOSYS          = Errno(0x4e)
-	ENOTBLK         = Errno(0xf)
-	ENOTCONN        = Errno(0x39)
-	ENOTDIR         = Errno(0x14)
-	ENOTEMPTY       = Errno(0x42)
-	ENOTRECOVERABLE = Errno(0x68)
-	ENOTSOCK        = Errno(0x26)
-	ENOTSUP         = Errno(0x2d)
-	ENOTTY          = Errno(0x19)
-	ENXIO           = Errno(0x6)
-	EOPNOTSUPP      = Errno(0x66)
-	EOVERFLOW       = Errno(0x54)
-	EOWNERDEAD      = Errno(0x69)
-	EPERM           = Errno(0x1)
-	EPFNOSUPPORT    = Errno(0x2e)
-	EPIPE           = Errno(0x20)
-	EPROCLIM        = Errno(0x43)
-	EPROCUNAVAIL    = Errno(0x4c)
-	EPROGMISMATCH   = Errno(0x4b)
-	EPROGUNAVAIL    = Errno(0x4a)
-	EPROTO          = Errno(0x64)
-	EPROTONOSUPPORT = Errno(0x2b)
-	EPROTOTYPE      = Errno(0x29)
-	EPWROFF         = Errno(0x52)
-	EQFULL          = Errno(0x6a)
-	ERANGE          = Errno(0x22)
-	EREMOTE         = Errno(0x47)
-	EROFS           = Errno(0x1e)
-	ERPCMISMATCH    = Errno(0x49)
-	ESHLIBVERS      = Errno(0x57)
-	ESHUTDOWN       = Errno(0x3a)
-	ESOCKTNOSUPPORT = Errno(0x2c)
-	ESPIPE          = Errno(0x1d)
-	ESRCH           = Errno(0x3)
-	ESTALE          = Errno(0x46)
-	ETIME           = Errno(0x65)
-	ETIMEDOUT       = Errno(0x3c)
-	ETOOMANYREFS    = Errno(0x3b)
-	ETXTBSY         = Errno(0x1a)
-	EUSERS          = Errno(0x44)
-	EWOULDBLOCK     = Errno(0x23)
-	EXDEV           = Errno(0x12)
-)
-
-// Signals
-const (
-	SIGABRT   = Signal(0x6)
-	SIGALRM   = Signal(0xe)
-	SIGBUS    = Signal(0xa)
-	SIGCHLD   = Signal(0x14)
-	SIGCONT   = Signal(0x13)
-	SIGEMT    = Signal(0x7)
-	SIGFPE    = Signal(0x8)
-	SIGHUP    = Signal(0x1)
-	SIGILL    = Signal(0x4)
-	SIGINFO   = Signal(0x1d)
-	SIGINT    = Signal(0x2)
-	SIGIO     = Signal(0x17)
-	SIGIOT    = Signal(0x6)
-	SIGKILL   = Signal(0x9)
-	SIGPIPE   = Signal(0xd)
-	SIGPROF   = Signal(0x1b)
-	SIGQUIT   = Signal(0x3)
-	SIGSEGV   = Signal(0xb)
-	SIGSTOP   = Signal(0x11)
-	SIGSYS    = Signal(0xc)
-	SIGTERM   = Signal(0xf)
-	SIGTRAP   = Signal(0x5)
-	SIGTSTP   = Signal(0x12)
-	SIGTTIN   = Signal(0x15)
-	SIGTTOU   = Signal(0x16)
-	SIGURG    = Signal(0x10)
-	SIGUSR1   = Signal(0x1e)
-	SIGUSR2   = Signal(0x1f)
-	SIGVTALRM = Signal(0x1a)
-	SIGWINCH  = Signal(0x1c)
-	SIGXCPU   = Signal(0x18)
-	SIGXFSZ   = Signal(0x19)
-)

internal/lib/syscall/zerrors_linux.go

@@ -1,193 +0,0 @@
-/*
- * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package syscall
-
-// Errors
-const (
-	E2BIG           = Errno(0x7)
-	EACCES          = Errno(0xd)
-	EADDRINUSE      = Errno(0x62)
-	EADDRNOTAVAIL   = Errno(0x63)
-	EADV            = Errno(0x44)
-	EAFNOSUPPORT    = Errno(0x61)
-	EAGAIN          = Errno(0xb)
-	EALREADY        = Errno(0x72)
-	EBADE           = Errno(0x34)
-	EBADF           = Errno(0x9)
-	EBADFD          = Errno(0x4d)
-	EBADMSG         = Errno(0x4a)
-	EBADR           = Errno(0x35)
-	EBADRQC         = Errno(0x38)
-	EBADSLT         = Errno(0x39)
-	EBFONT          = Errno(0x3b)
-	EBUSY           = Errno(0x10)
-	ECANCELED       = Errno(0x7d)
-	ECHILD          = Errno(0xa)
-	ECHRNG          = Errno(0x2c)
-	ECOMM           = Errno(0x46)
-	ECONNABORTED    = Errno(0x67)
-	ECONNREFUSED    = Errno(0x6f)
-	ECONNRESET      = Errno(0x68)
-	EDEADLK         = Errno(0x23)
-	EDEADLOCK       = Errno(0x23)
-	EDESTADDRREQ    = Errno(0x59)
-	EDOM            = Errno(0x21)
-	EDOTDOT         = Errno(0x49)
-	EDQUOT          = Errno(0x7a)
-	EEXIST          = Errno(0x11)
-	EFAULT          = Errno(0xe)
-	EFBIG           = Errno(0x1b)
-	EHOSTDOWN       = Errno(0x70)
-	EHOSTUNREACH    = Errno(0x71)
-	EIDRM           = Errno(0x2b)
-	EILSEQ          = Errno(0x54)
-	EINPROGRESS     = Errno(0x73)
-	EINTR           = Errno(0x4)
-	EINVAL          = Errno(0x16)
-	EIO             = Errno(0x5)
-	EISCONN         = Errno(0x6a)
-	EISDIR          = Errno(0x15)
-	EISNAM          = Errno(0x78)
-	EKEYEXPIRED     = Errno(0x7f)
-	EKEYREJECTED    = Errno(0x81)
-	EKEYREVOKED     = Errno(0x80)
-	EL2HLT          = Errno(0x33)
-	EL2NSYNC        = Errno(0x2d)
-	EL3HLT          = Errno(0x2e)
-	EL3RST          = Errno(0x2f)
-	ELIBACC         = Errno(0x4f)
-	ELIBBAD         = Errno(0x50)
-	ELIBEXEC        = Errno(0x53)
-	ELIBMAX         = Errno(0x52)
-	ELIBSCN         = Errno(0x51)
-	ELNRNG          = Errno(0x30)
-	ELOOP           = Errno(0x28)
-	EMEDIUMTYPE     = Errno(0x7c)
-	EMFILE          = Errno(0x18)
-	EMLINK          = Errno(0x1f)
-	EMSGSIZE        = Errno(0x5a)
-	EMULTIHOP       = Errno(0x48)
-	ENAMETOOLONG    = Errno(0x24)
-	ENAVAIL         = Errno(0x77)
-	ENETDOWN        = Errno(0x64)
-	ENETRESET       = Errno(0x66)
-	ENETUNREACH     = Errno(0x65)
-	ENFILE          = Errno(0x17)
-	ENOANO          = Errno(0x37)
-	ENOBUFS         = Errno(0x69)
-	ENOCSI          = Errno(0x32)
-	ENODATA         = Errno(0x3d)
-	ENODEV          = Errno(0x13)
-	ENOENT          = Errno(0x2)
-	ENOEXEC         = Errno(0x8)
-	ENOKEY          = Errno(0x7e)
-	ENOLCK          = Errno(0x25)
-	ENOLINK         = Errno(0x43)
-	ENOMEDIUM       = Errno(0x7b)
-	ENOMEM          = Errno(0xc)
-	ENOMSG          = Errno(0x2a)
-	ENONET          = Errno(0x40)
-	ENOPKG          = Errno(0x41)
-	ENOPROTOOPT     = Errno(0x5c)
-	ENOSPC          = Errno(0x1c)
-	ENOSR           = Errno(0x3f)
-	ENOSTR          = Errno(0x3c)
-	ENOSYS          = Errno(0x26)
-	ENOTBLK         = Errno(0xf)
-	ENOTCONN        = Errno(0x6b)
-	ENOTDIR         = Errno(0x14)
-	ENOTEMPTY       = Errno(0x27)
-	ENOTNAM         = Errno(0x76)
-	ENOTRECOVERABLE = Errno(0x83)
-	ENOTSOCK        = Errno(0x58)
-	ENOTSUP         = Errno(0x5f)
-	ENOTTY          = Errno(0x19)
-	ENOTUNIQ        = Errno(0x4c)
-	ENXIO           = Errno(0x6)
-	EOPNOTSUPP      = Errno(0x5f)
-	EOVERFLOW       = Errno(0x4b)
-	EOWNERDEAD      = Errno(0x82)
-	EPERM           = Errno(0x1)
-	EPFNOSUPPORT    = Errno(0x60)
-	EPIPE           = Errno(0x20)
-	EPROTO          = Errno(0x47)
-	EPROTONOSUPPORT = Errno(0x5d)
-	EPROTOTYPE      = Errno(0x5b)
-	ERANGE          = Errno(0x22)
-	EREMCHG         = Errno(0x4e)
-	EREMOTE         = Errno(0x42)
-	EREMOTEIO       = Errno(0x79)
-	ERESTART        = Errno(0x55)
-	ERFKILL         = Errno(0x84)
-	EROFS           = Errno(0x1e)
-	ESHUTDOWN       = Errno(0x6c)
-	ESOCKTNOSUPPORT = Errno(0x5e)
-	ESPIPE          = Errno(0x1d)
-	ESRCH           = Errno(0x3)
-	ESRMNT          = Errno(0x45)
-	ESTALE          = Errno(0x74)
-	ESTRPIPE        = Errno(0x56)
-	ETIME           = Errno(0x3e)
-	ETIMEDOUT       = Errno(0x6e)
-	ETOOMANYREFS    = Errno(0x6d)
-	ETXTBSY         = Errno(0x1a)
-	EUCLEAN         = Errno(0x75)
-	EUNATCH         = Errno(0x31)
-	EUSERS          = Errno(0x57)
-	EWOULDBLOCK     = Errno(0xb)
-	EXDEV           = Errno(0x12)
-	EXFULL          = Errno(0x36)
-)
-
-// Signals
-const (
-	SIGABRT   = Signal(0x6)
-	SIGALRM   = Signal(0xe)
-	SIGBUS    = Signal(0x7)
-	SIGCHLD   = Signal(0x11)
-	SIGCLD    = Signal(0x11)
-	SIGCONT   = Signal(0x12)
-	SIGFPE    = Signal(0x8)
-	SIGHUP    = Signal(0x1)
-	SIGILL    = Signal(0x4)
-	SIGINT    = Signal(0x2)
-	SIGIO     = Signal(0x1d)
-	SIGIOT    = Signal(0x6)
-	SIGKILL   = Signal(0x9)
-	SIGPIPE   = Signal(0xd)
-	SIGPOLL   = Signal(0x1d)
-	SIGPROF   = Signal(0x1b)
-	SIGPWR    = Signal(0x1e)
-	SIGQUIT   = Signal(0x3)
-	SIGSEGV   = Signal(0xb)
-	SIGSTKFLT = Signal(0x10)
-	SIGSTOP   = Signal(0x13)
-	SIGSYS    = Signal(0x1f)
-	SIGTERM   = Signal(0xf)
-	SIGTRAP   = Signal(0x5)
-	SIGTSTP   = Signal(0x14)
-	SIGTTIN   = Signal(0x15)
-	SIGTTOU   = Signal(0x16)
-	SIGUNUSED = Signal(0x1f)
-	SIGURG    = Signal(0x17)
-	SIGUSR1   = Signal(0xa)
-	SIGUSR2   = Signal(0xc)
-	SIGVTALRM = Signal(0x1a)
-	SIGWINCH  = Signal(0x1c)
-	SIGXCPU   = Signal(0x18)
-	SIGXFSZ   = Signal(0x19)
-)