Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 330 insertions, 0 deletions

diff --git a/src/runtime/syscall_solaris.go b/src/runtime/syscall_solaris.go
new file mode 100644
index 0000000..11b9c2a
--- /dev/null
+++ b/src/runtime/syscall_solaris.go
@@ -0,0 +1,330 @@
+// Copyright 2014 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.
+
+package runtime
+
+import "unsafe"
+
+var (
+	libc_chdir,
+	libc_chroot,
+	libc_close,
+	libc_execve,
+	libc_fcntl,
+	libc_forkx,
+	libc_gethostname,
+	libc_getpid,
+	libc_ioctl,
+	libc_setgid,
+	libc_setgroups,
+	libc_setrlimit,
+	libc_setsid,
+	libc_setuid,
+	libc_setpgid,
+	libc_syscall,
+	libc_issetugid,
+	libc_wait4 libcFunc
+)
+
+// Many of these are exported via linkname to assembly in the syscall
+// package.
+
+//go:nosplit
+//go:linkname syscall_sysvicall6
+//go:cgo_unsafe_args
+func syscall_sysvicall6(fn, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
+	call := libcall{
+		fn:   fn,
+		n:    nargs,
+		args: uintptr(unsafe.Pointer(&a1)),
+	}
+	entersyscallblock()
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	exitsyscall()
+	return call.r1, call.r2, call.err
+}
+
+//go:nosplit
+//go:linkname syscall_rawsysvicall6
+//go:cgo_unsafe_args
+func syscall_rawsysvicall6(fn, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
+	call := libcall{
+		fn:   fn,
+		n:    nargs,
+		args: uintptr(unsafe.Pointer(&a1)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.r1, call.r2, call.err
+}
+
+// TODO(aram): Once we remove all instances of C calling sysvicallN, make
+// sysvicallN return errors and replace the body of the following functions
+// with calls to sysvicallN.
+
+//go:nosplit
+//go:linkname syscall_chdir
+func syscall_chdir(path uintptr) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_chdir)),
+		n:    1,
+		args: uintptr(unsafe.Pointer(&path)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+//go:nosplit
+//go:linkname syscall_chroot
+func syscall_chroot(path uintptr) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_chroot)),
+		n:    1,
+		args: uintptr(unsafe.Pointer(&path)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+// like close, but must not split stack, for forkx.
+//
+//go:nosplit
+//go:linkname syscall_close
+func syscall_close(fd int32) int32 {
+	return int32(sysvicall1(&libc_close, uintptr(fd)))
+}
+
+const _F_DUP2FD = 0x9
+
+//go:nosplit
+//go:linkname syscall_dup2
+func syscall_dup2(oldfd, newfd uintptr) (val, err uintptr) {
+	return syscall_fcntl(oldfd, _F_DUP2FD, newfd)
+}
+
+//go:nosplit
+//go:linkname syscall_execve
+//go:cgo_unsafe_args
+func syscall_execve(path, argv, envp uintptr) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_execve)),
+		n:    3,
+		args: uintptr(unsafe.Pointer(&path)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+// like exit, but must not split stack, for forkx.
+//
+//go:nosplit
+//go:linkname syscall_exit
+func syscall_exit(code uintptr) {
+	sysvicall1(&libc_exit, code)
+}
+
+//go:nosplit
+//go:linkname syscall_fcntl
+//go:cgo_unsafe_args
+func syscall_fcntl(fd, cmd, arg uintptr) (val, err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_fcntl)),
+		n:    3,
+		args: uintptr(unsafe.Pointer(&fd)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.r1, call.err
+}
+
+//go:nosplit
+//go:linkname syscall_forkx
+func syscall_forkx(flags uintptr) (pid uintptr, err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_forkx)),
+		n:    1,
+		args: uintptr(unsafe.Pointer(&flags)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	if int(call.r1) != -1 {
+		call.err = 0
+	}
+	return call.r1, call.err
+}
+
+//go:linkname syscall_gethostname
+func syscall_gethostname() (name string, err uintptr) {
+	cname := new([_MAXHOSTNAMELEN]byte)
+	var args = [2]uintptr{uintptr(unsafe.Pointer(&cname[0])), _MAXHOSTNAMELEN}
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_gethostname)),
+		n:    2,
+		args: uintptr(unsafe.Pointer(&args[0])),
+	}
+	entersyscallblock()
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	exitsyscall()
+	if call.r1 != 0 {
+		return "", call.err
+	}
+	cname[_MAXHOSTNAMELEN-1] = 0
+	return gostringnocopy(&cname[0]), 0
+}
+
+//go:nosplit
+//go:linkname syscall_getpid
+func syscall_getpid() (pid, err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_getpid)),
+		n:    0,
+		args: uintptr(unsafe.Pointer(&libc_getpid)), // it's unused but must be non-nil, otherwise crashes
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.r1, call.err
+}
+
+//go:nosplit
+//go:linkname syscall_ioctl
+//go:cgo_unsafe_args
+func syscall_ioctl(fd, req, arg uintptr) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_ioctl)),
+		n:    3,
+		args: uintptr(unsafe.Pointer(&fd)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+// This is syscall.RawSyscall, it exists to satisfy some build dependency,
+// but it doesn't work.
+//
+//go:linkname syscall_rawsyscall
+func syscall_rawsyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
+	panic("RawSyscall not available on Solaris")
+}
+
+// This is syscall.RawSyscall6, it exists to avoid a linker error because
+// syscall.RawSyscall6 is already declared. See golang.org/issue/24357
+//
+//go:linkname syscall_rawsyscall6
+func syscall_rawsyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) {
+	panic("RawSyscall6 not available on Solaris")
+}
+
+//go:nosplit
+//go:linkname syscall_setgid
+func syscall_setgid(gid uintptr) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_setgid)),
+		n:    1,
+		args: uintptr(unsafe.Pointer(&gid)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+//go:nosplit
+//go:linkname syscall_setgroups
+//go:cgo_unsafe_args
+func syscall_setgroups(ngid, gid uintptr) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_setgroups)),
+		n:    2,
+		args: uintptr(unsafe.Pointer(&ngid)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+//go:nosplit
+//go:linkname syscall_setrlimit
+//go:cgo_unsafe_args
+func syscall_setrlimit(which uintptr, lim unsafe.Pointer) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_setrlimit)),
+		n:    2,
+		args: uintptr(unsafe.Pointer(&which)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+//go:nosplit
+//go:linkname syscall_setsid
+func syscall_setsid() (pid, err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_setsid)),
+		n:    0,
+		args: uintptr(unsafe.Pointer(&libc_setsid)), // it's unused but must be non-nil, otherwise crashes
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.r1, call.err
+}
+
+//go:nosplit
+//go:linkname syscall_setuid
+func syscall_setuid(uid uintptr) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_setuid)),
+		n:    1,
+		args: uintptr(unsafe.Pointer(&uid)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+//go:nosplit
+//go:linkname syscall_setpgid
+//go:cgo_unsafe_args
+func syscall_setpgid(pid, pgid uintptr) (err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_setpgid)),
+		n:    2,
+		args: uintptr(unsafe.Pointer(&pid)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.err
+}
+
+//go:linkname syscall_syscall
+//go:cgo_unsafe_args
+func syscall_syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_syscall)),
+		n:    4,
+		args: uintptr(unsafe.Pointer(&trap)),
+	}
+	entersyscallblock()
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	exitsyscall()
+	return call.r1, call.r2, call.err
+}
+
+//go:linkname syscall_wait4
+//go:cgo_unsafe_args
+func syscall_wait4(pid uintptr, wstatus *uint32, options uintptr, rusage unsafe.Pointer) (wpid int, err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_wait4)),
+		n:    4,
+		args: uintptr(unsafe.Pointer(&pid)),
+	}
+	entersyscallblock()
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	exitsyscall()
+	KeepAlive(wstatus)
+	KeepAlive(rusage)
+	return int(call.r1), call.err
+}
+
+//go:nosplit
+//go:linkname syscall_write
+//go:cgo_unsafe_args
+func syscall_write(fd, buf, nbyte uintptr) (n, err uintptr) {
+	call := libcall{
+		fn:   uintptr(unsafe.Pointer(&libc_write)),
+		n:    3,
+		args: uintptr(unsafe.Pointer(&fd)),
+	}
+	asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&call))
+	return call.r1, call.err
+}