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unix: add Select syscall on AIX

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As select is a keyword of Go, C.select cannot be used on gccgo files.
Therefore, select call is transformed into c_select.

Change-Id: Ic68a7ffa03dc5a5d70514876b5f6afb565691a4a
Reviewed-on: https://go-review.googlesource.com/c/sys/+/172739
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Clément Chigot
2019-04-18 16:57:45 +02:00
committed by Ian Lance Taylor
parent d20716ef9d
commit f0ce4c0180
8 changed files with 90 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
unix/mksyscall_aix_ppc.go
View File

@@ -214,6 +214,11 @@ func main() {
}
if funct != "fcntl" && funct != "FcntlInt" && funct != "readlen" && funct != "writelen" {
if sysname == "select" {
// select is a keyword of Go. Its name is
// changed to c_select.
cExtern += "#define c_select select\n"
}
// Imports of system calls from libc
cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
cIn := strings.Join(cIn, ", ")
@@ -328,7 +333,13 @@ func main() {
} else {
call += ""
}
call += fmt.Sprintf("C.%s(%s)", sysname, arglist)
if sysname == "select" {
// select is a keyword of Go. Its name is
// changed to c_select.
call += fmt.Sprintf("C.c_%s(%s)", sysname, arglist)
} else {
call += fmt.Sprintf("C.%s(%s)", sysname, arglist)
}
// Assign return values.
body := ""

14
unix/mksyscall_aix_ppc64.go
View File

@@ -282,6 +282,11 @@ func main() {
if !onlyCommon {
// GCCGO Prototype Generation
// Imports of system calls from libc
if sysname == "select" {
// select is a keyword of Go. Its name is
// changed to c_select.
cExtern += "#define c_select select\n"
}
cExtern += fmt.Sprintf("%s %s", cRettype, sysname)
cIn := strings.Join(cIn, ", ")
cExtern += fmt.Sprintf("(%s);\n", cIn)
@@ -490,7 +495,14 @@ func main() {
// GCCGO function generation
argsgccgolist := strings.Join(argsgccgo, ", ")
callgccgo := fmt.Sprintf("C.%s(%s)", sysname, argsgccgolist)
var callgccgo string
if sysname == "select" {
// select is a keyword of Go. Its name is
// changed to c_select.
callgccgo = fmt.Sprintf("C.c_%s(%s)", sysname, argsgccgolist)
} else {
callgccgo = fmt.Sprintf("C.%s(%s)", sysname, argsgccgolist)
}
textgccgo += callProto
textgccgo += fmt.Sprintf("\tr1 = uintptr(%s)\n", callgccgo)
textgccgo += "\te1 = syscall.GetErrno()\n"

3
unix/syscall_aix.go
View File

@@ -470,8 +470,7 @@ func IoctlGetTermios(fd int, req uint) (*Termios, error) {
//sys Pause() (err error)
//sys Pread(fd int, p []byte, offset int64) (n int, err error) = pread64
//sys Pwrite(fd int, p []byte, offset int64) (n int, err error) = pwrite64
//TODO Select
// //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
//sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
//sysnb Setregid(rgid int, egid int) (err error)
//sysnb Setreuid(ruid int, euid int) (err error)

20
unix/syscall_aix_test.go
View File

@@ -123,6 +123,26 @@ func TestUtimesNanoAt(t *testing.T) {
}
}
func TestSelect(t *testing.T) {
_, err := unix.Select(0, nil, nil, nil, &unix.Timeval{Sec: 0, Usec: 0})
if err != nil {
t.Fatalf("Select: %v", err)
}
dur := 150 * time.Millisecond
tv := unix.NsecToTimeval(int64(dur))
start := time.Now()
_, err = unix.Select(0, nil, nil, nil, &tv)
took := time.Since(start)
if err != nil {
t.Fatalf("Select: %v", err)
}
if took < dur {
t.Errorf("Select: timeout should have been at least %v, got %v", dur, took)
}
}
func TestPselect(t *testing.T) {
if runtime.GOARCH == "ppc64" {
t.Skip("pselect issue with structure timespec on AIX 7.2 tl0, skipping test")

13
unix/zsyscall_aix_ppc.go
View File

@@ -83,6 +83,8 @@ int lstat(uintptr_t, uintptr_t);
int pause();
int pread64(int, uintptr_t, size_t, long long);
int pwrite64(int, uintptr_t, size_t, long long);
#define c_select select
int select(int, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
int pselect(int, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
int setregid(int, int);
int setreuid(int, int);
@@ -1005,6 +1007,17 @@ func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
r0, er := C.c_select(C.int(nfd), C.uintptr_t(uintptr(unsafe.Pointer(r))), C.uintptr_t(uintptr(unsafe.Pointer(w))), C.uintptr_t(uintptr(unsafe.Pointer(e))), C.uintptr_t(uintptr(unsafe.Pointer(timeout))))
n = int(r0)
if r0 == -1 && er != nil {
err = er
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, er := C.pselect(C.int(nfd), C.uintptr_t(uintptr(unsafe.Pointer(r))), C.uintptr_t(uintptr(unsafe.Pointer(w))), C.uintptr_t(uintptr(unsafe.Pointer(e))), C.uintptr_t(uintptr(unsafe.Pointer(timeout))), C.uintptr_t(uintptr(unsafe.Pointer(sigmask))))
n = int(r0)

11
unix/zsyscall_aix_ppc64.go
View File

@@ -960,6 +960,17 @@ func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) {
r0, e1 := callselect(nfd, uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)))
n = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
r0, e1 := callpselect(nfd, uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)))
n = int(r0)

10
unix/zsyscall_aix_ppc64_gc.go
View File

@@ -85,6 +85,7 @@ import (
//go:cgo_import_dynamic libc_pause pause "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_pread64 pread64 "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_pwrite64 pwrite64 "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_select select "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_pselect pselect "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_setregid setregid "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_setreuid setreuid "libc.a/shr_64.o"
@@ -201,6 +202,7 @@ import (
//go:linkname libc_pause libc_pause
//go:linkname libc_pread64 libc_pread64
//go:linkname libc_pwrite64 libc_pwrite64
//go:linkname libc_select libc_select
//go:linkname libc_pselect libc_pselect
//go:linkname libc_setregid libc_setregid
//go:linkname libc_setreuid libc_setreuid
@@ -320,6 +322,7 @@ var (
libc_pause,
libc_pread64,
libc_pwrite64,
libc_select,
libc_pselect,
libc_setregid,
libc_setreuid,
@@ -893,6 +896,13 @@ func callpwrite64(fd int, _p0 uintptr, _lenp0 int, offset int64) (r1 uintptr, e1
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func callselect(nfd int, r uintptr, w uintptr, e uintptr, timeout uintptr) (r1 uintptr, e1 Errno) {
r1, _, e1 = syscall6(uintptr(unsafe.Pointer(&libc_select)), 5, uintptr(nfd), r, w, e, timeout, 0)
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func callpselect(nfd int, r uintptr, w uintptr, e uintptr, timeout uintptr, sigmask uintptr) (r1 uintptr, e1 Errno) {
r1, _, e1 = syscall6(uintptr(unsafe.Pointer(&libc_pselect)), 6, uintptr(nfd), r, w, e, timeout, sigmask)
return

10
unix/zsyscall_aix_ppc64_gccgo.go
View File

@@ -83,6 +83,8 @@ int lstat(uintptr_t, uintptr_t);
int pause();
int pread64(int, uintptr_t, size_t, long long);
int pwrite64(int, uintptr_t, size_t, long long);
#define c_select select
int select(int, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
int pselect(int, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
int setregid(int, int);
int setreuid(int, int);
@@ -732,6 +734,14 @@ func callpwrite64(fd int, _p0 uintptr, _lenp0 int, offset int64) (r1 uintptr, e1
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func callselect(nfd int, r uintptr, w uintptr, e uintptr, timeout uintptr) (r1 uintptr, e1 Errno) {
r1 = uintptr(C.c_select(C.int(nfd), C.uintptr_t(r), C.uintptr_t(w), C.uintptr_t(e), C.uintptr_t(timeout)))
e1 = syscall.GetErrno()
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func callpselect(nfd int, r uintptr, w uintptr, e uintptr, timeout uintptr, sigmask uintptr) (r1 uintptr, e1 Errno) {
r1 = uintptr(C.pselect(C.int(nfd), C.uintptr_t(r), C.uintptr_t(w), C.uintptr_t(e), C.uintptr_t(timeout), C.uintptr_t(sigmask)))
e1 = syscall.GetErrno()