Realign around the evolving Go support for POSIX semantics syscalls.
I've moved my go.patch to address:
https://github.com/golang/go/issues/1435
into a development patch against the upstream Go sources:
https://go-review.googlesource.com/c/go/+/210639/
and the review process will likely evolve it somewhat. I plan to
ensure that working libcap/cap Go package is in sync with the
working state of the above development change.
As such, there is no need to keep the patch here any more.
I'll keep the tests for now, as it isn't clear to me how the Go
source tree supports tests that require privilege yet.
Signed-off-by: Andrew G. Morgan <[email protected]>
diff --git a/cap/cap.go b/cap/cap.go
index 858950a..0a155ca 100644
--- a/cap/cap.go
+++ b/cap/cap.go
@@ -5,12 +5,13 @@
// POSIX semantics system calls that manipulate process state.
//
// If the Go runtime syscall interface contains the
-// syscall.PosixSyscall() API then then this package will use that to
-// invoke capability setting system calls for pure Go binaries. To
-// force this behavior use the CGO_ENABLED=0 environment variable.
+// syscall.PerOSThreadSyscall() API then then this package will use
+// that to invoke capability setting system calls for pure Go
+// binaries. To force this behavior use the CGO_ENABLED=0 environment
+// variable.
//
-// If syscall.PosixSyscall() is not present, the "libcap/cap" package
-// will failover to using "libcap/psx".
+// If syscall.PerOSThreadSyscall() is not present, the "libcap/cap"
+// package will failover to using "libcap/psx".
package cap
import (
diff --git a/contrib/golang/README b/contrib/golang/README
index 0ebe284..9c55ad5 100644
--- a/contrib/golang/README
+++ b/contrib/golang/README
@@ -1,14 +1,11 @@
-This directory contains the code needed to enable POSIX system calls
-in the Go runtime for linux.
+This directory contains some test code for system calls that need
+POSIX semantics to work under Go. There are 9 system calls wrapped in
+a nptl:setxid mechanism in glibc, and the following development patch
+adds support for these 9 to native Go.
- go.patch
+https://go-review.googlesource.com/c/go/+/210639/
-It also contains two test programs that verify that the patched go
-runtime supports all of the set* groups and uids glibc equivalents
-both with and without cgo compilation. In the latter case, the
-syscall.Setuid() etc are redirected to the glibc equivalents, which
-consistently (thanks to nptl:setxid) cause all threads to maintain
-consistent [gu]id state.
+The Go support works with or without CGO_ENABLED.
With a patched Go runtime library:
@@ -18,5 +15,9 @@
should validate that all is working as intended.
+The above Go patch also exposes the mechanism that achieves this in
+the Go runtime, to ensure that the native Go "libcap/cap" package can
+work with and without CGO_ENABLED.
+
Andrew G. Morgan <[email protected]>
-2019-11-30
+2019-12-10
diff --git a/contrib/golang/go.patch b/contrib/golang/go.patch
deleted file mode 100644
index a29dfe0..0000000
--- a/contrib/golang/go.patch
+++ /dev/null
@@ -1,1861 +0,0 @@
-From b6d0ea13bdcf6ee80825d485c7161792c41600a1 Mon Sep 17 00:00:00 2001
-From: "Andrew G. Morgan" <[email protected]>
-Date: Sat, 30 Nov 2019 13:22:28 -0800
-Subject: [PATCH] POSIX semantics support for some Linux syscalls
-
-Fixes #1435
-
-This change adds two new methods for invoking system calls
-under Linux: syscall.PosixSyscall() and syscall.PosixSyscall6().
-
-These system call wrappers ensure that all OSThreads mirror
-a common system call. The wrappers serialize execution of the
-runtime to ensure no race conditions where any Go code observes
-a non-atomic OS state change. As such, the syscalls have
-higher runtime overhead than regular system calls, and only
-need to be used where such thread (or 'm' in the parlance
-of the runtime sources) consistency is required.
-
-The new support is used to enable these functions under Linux:
-
- syscall.Setegid(), syscall.Seteuid(), syscall.Setgroups(),
- syscall.Setgid(), syscall.Setregid(), syscall.Setreuid(),
- syscall.Setresgid(), syscall.Setresuid() and syscall.Setuid().
-
-They work identically to their glibc counterparts.
-
-Extensive discussion of the background issue addressed in this
-patch can be found here:
-
- https://github.com/golang/go/issues/1435
-
-In the case where cgo is used, the C runtime can launch
-pthreads that are not managed by the Go runtime. As such, the
-added syscall.PosixSyscall*() functions do not extend to these
-C launched threads. However, for the 9 syscall.Set*() functions
-listed above, when cgo is active, the functions redirect to
-invoke their C.set*() equivalents in glibc, which wraps the
-raw system calls with a nptl:setxid fixup mechanism. This achieves
-POSIX semantics for these functions in the combined Go and C
-runtime.
-
-As a side note, the glibc/nptl:setxid support (2019-11-30) does
-not extend to all security related system calls under Linux so
-using native Go (CGO_ENABLED=0) and these PosixSyscall()s where
-needed will yield more well defined/consistent behavior over all
-threads of a Go program. That is, using the syscall.PosixSyscall
-wrappers for things like setting state through SYS_PRCTL and
-SYS_CAPSET etc.
-
-Signed-off-by: Andrew G. Morgan <[email protected]>
----
- src/runtime/cgo/linux.go | 74 +++++++++++
- src/runtime/cgo/linux_syscall.c | 100 +++++++++++++++
- src/runtime/cgocall.go | 15 +++
- src/runtime/proc.go | 101 ++++++++++++++-
- src/runtime/runtime2.go | 4 +
- src/syscall/setuidgid_32_linux.go | 6 +
- src/syscall/setuidgid_linux.go | 6 +
- src/syscall/syscall_linux.go | 224 ++++++++++++++++++++++++++++++---
- src/syscall/syscall_linux_386.go | 5 -
- src/syscall/syscall_linux_amd64.go | 5 -
- src/syscall/syscall_linux_arm.go | 5 -
- src/syscall/syscall_linux_arm64.go | 5 -
- src/syscall/syscall_linux_mips64x.go | 5 -
- src/syscall/syscall_linux_mipsx.go | 6 -
- src/syscall/syscall_linux_ppc64x.go | 5 -
- src/syscall/syscall_linux_riscv64.go | 5 -
- src/syscall/syscall_linux_s390x.go | 5 -
- src/syscall/zsyscall_linux_386.go | 50 --------
- src/syscall/zsyscall_linux_amd64.go | 50 --------
- src/syscall/zsyscall_linux_arm.go | 50 --------
- src/syscall/zsyscall_linux_arm64.go | 50 --------
- src/syscall/zsyscall_linux_mips.go | 50 --------
- src/syscall/zsyscall_linux_mips64.go | 50 --------
- src/syscall/zsyscall_linux_mips64le.go | 50 --------
- src/syscall/zsyscall_linux_mipsle.go | 50 --------
- src/syscall/zsyscall_linux_ppc64.go | 50 --------
- src/syscall/zsyscall_linux_ppc64le.go | 50 --------
- src/syscall/zsyscall_linux_riscv64.go | 50 --------
- src/syscall/zsyscall_linux_s390x.go | 50 --------
- 29 files changed, 514 insertions(+), 662 deletions(-)
- create mode 100644 src/runtime/cgo/linux.go
- create mode 100644 src/runtime/cgo/linux_syscall.c
-
-diff --git a/src/runtime/cgo/linux.go b/src/runtime/cgo/linux.go
-new file mode 100644
-index 0000000000..ea5d7a6b27
---- /dev/null
-+++ b/src/runtime/cgo/linux.go
-@@ -0,0 +1,74 @@
-+// Copyright 2019 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.
-+
-+// Linux system call wrappers that provide POSIX semantics through the
-+// corresponding cgo->libc (nptl) wrappers for various system calls.
-+
-+// +build linux
-+
-+package cgo
-+
-+import "unsafe"
-+
-+// Each of the following entries is needed to ensure that the
-+// syscall.syscall_linux code can conditionally these function
-+// pointers:
-+//
-+// 1. find the C-defined function start
-+// 2. force the local byte alias to be mapped to that location
-+// 3. map the Go pointer to the function to the syscall package
-+
-+//go:cgo_import_static _cgo_libc_setegid
-+//go:linkname _cgo_libc_setegid _cgo_libc_setegid
-+//go:linkname cgo_libc_setegid syscall.cgo_libc_setegid
-+var _cgo_libc_setegid byte
-+var cgo_libc_setegid = unsafe.Pointer(&_cgo_libc_setegid)
-+
-+//go:cgo_import_static _cgo_libc_seteuid
-+//go:linkname _cgo_libc_seteuid _cgo_libc_seteuid
-+//go:linkname cgo_libc_seteuid syscall.cgo_libc_seteuid
-+var _cgo_libc_seteuid byte
-+var cgo_libc_seteuid = unsafe.Pointer(&_cgo_libc_seteuid)
-+
-+//go:cgo_import_static _cgo_libc_setregid
-+//go:linkname _cgo_libc_setregid _cgo_libc_setregid
-+//go:linkname cgo_libc_setregid syscall.cgo_libc_setregid
-+var _cgo_libc_setregid byte
-+var cgo_libc_setregid = unsafe.Pointer(&_cgo_libc_setregid)
-+
-+//go:cgo_import_static _cgo_libc_setresgid
-+//go:linkname _cgo_libc_setresgid _cgo_libc_setresgid
-+//go:linkname cgo_libc_setresgid syscall.cgo_libc_setresgid
-+var _cgo_libc_setresgid byte
-+var cgo_libc_setresgid = unsafe.Pointer(&_cgo_libc_setresgid)
-+
-+//go:cgo_import_static _cgo_libc_setresuid
-+//go:linkname _cgo_libc_setresuid _cgo_libc_setresuid
-+//go:linkname cgo_libc_setresuid syscall.cgo_libc_setresuid
-+var _cgo_libc_setresuid byte
-+var cgo_libc_setresuid = unsafe.Pointer(&_cgo_libc_setresuid)
-+
-+//go:cgo_import_static _cgo_libc_setreuid
-+//go:linkname _cgo_libc_setreuid _cgo_libc_setreuid
-+//go:linkname cgo_libc_setreuid syscall.cgo_libc_setreuid
-+var _cgo_libc_setreuid byte
-+var cgo_libc_setreuid = unsafe.Pointer(&_cgo_libc_setreuid)
-+
-+//go:cgo_import_static _cgo_libc_setgroups
-+//go:linkname _cgo_libc_setgroups _cgo_libc_setgroups
-+//go:linkname cgo_libc_setgroups syscall.cgo_libc_setgroups
-+var _cgo_libc_setgroups byte
-+var cgo_libc_setgroups = unsafe.Pointer(&_cgo_libc_setgroups)
-+
-+//go:cgo_import_static _cgo_libc_setgid
-+//go:linkname _cgo_libc_setgid _cgo_libc_setgid
-+//go:linkname cgo_libc_setgid syscall.cgo_libc_setgid
-+var _cgo_libc_setgid byte
-+var cgo_libc_setgid = unsafe.Pointer(&_cgo_libc_setgid)
-+
-+//go:cgo_import_static _cgo_libc_setuid
-+//go:linkname _cgo_libc_setuid _cgo_libc_setuid
-+//go:linkname cgo_libc_setuid syscall.cgo_libc_setuid
-+var _cgo_libc_setuid byte
-+var cgo_libc_setuid = unsafe.Pointer(&_cgo_libc_setuid)
-diff --git a/src/runtime/cgo/linux_syscall.c b/src/runtime/cgo/linux_syscall.c
-new file mode 100644
-index 0000000000..96993925fb
---- /dev/null
-+++ b/src/runtime/cgo/linux_syscall.c
-@@ -0,0 +1,100 @@
-+// Copyright 2019 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 linux
-+
-+#ifndef _GNU_SOURCE // setres[ug]id() API.
-+#define _GNU_SOURCE
-+#endif
-+
-+#include <grp.h>
-+#include <sys/types.h>
-+#include <sys/unistd.h>
-+#include <errno.h>
-+#include "libcgo.h"
-+
-+/*
-+ * Assumed POSIX compliant libc system call wrappers. For linux, the
-+ * glibc/nptl/setxid mechanism ensures that POSIX semantics are
-+ * honored for all pthreads (by default), and this in turn with cgo
-+ * ensures that all Go threads launched with cgo are kept in sync for
-+ * these function calls.
-+ *
-+ * WARNING: This assumes the default glibc behavior. It is possible to
-+ * disable/subvert pthreads POSIX syscall compatibility from C code.
-+ *
-+ * For Go, since all 'm' threads are interchangeable at runtime,
-+ * this makes no sense. So, if you are at risk of privilege
-+ * escalation security exposure from this detail, consider rewriting
-+ * your code in native Go, or be sure to drop all privilege before
-+ * invoking *any* C-code.
-+ *
-+ * Further, the set of libc functions provided here are a complete
-+ * list of glibc/nptl/setxid wrapped functions, as of 2019-11-29,
-+ * but they are insufficient to account for all of the security
-+ * relevant kernel syscalls under Linux: prctl and setcap for
-+ * example.
-+ *
-+ * argset_t matches runtime/cgocall.go:argset.
-+ */
-+typedef struct {
-+ uintptr_t* args;
-+ uintptr_t retval;
-+} argset_t;
-+
-+// libc backed posix-compliant syscalls.
-+
-+#define SET_RETVAL(fn) \
-+ uintptr_t ret = (uintptr_t) fn ; \
-+ if (ret == -1) { \
-+ x->retval = (uintptr_t) errno; \
-+ } else \
-+ x->retval = ret
-+
-+void
-+_cgo_libc_setegid(argset_t* x) {
-+ SET_RETVAL(setegid((gid_t) x->args[0]));
-+}
-+
-+void
-+_cgo_libc_seteuid(argset_t* x) {
-+ SET_RETVAL(seteuid((uid_t) x->args[0]));
-+}
-+
-+void
-+_cgo_libc_setgid(argset_t* x) {
-+ SET_RETVAL(setgid((gid_t) x->args[0]));
-+}
-+
-+void
-+_cgo_libc_setgroups(argset_t* x) {
-+ SET_RETVAL(setgroups((size_t) x->args[0], (const gid_t *) x->args[1]));
-+}
-+
-+void
-+_cgo_libc_setregid(argset_t* x) {
-+ SET_RETVAL(setregid((gid_t) x->args[0], (gid_t) x->args[1]));
-+}
-+
-+void
-+_cgo_libc_setresgid(argset_t* x) {
-+ SET_RETVAL(setresgid((gid_t) x->args[0], (gid_t) x->args[1],
-+ (gid_t) x->args[2]));
-+}
-+
-+void
-+_cgo_libc_setresuid(argset_t* x) {
-+ SET_RETVAL(setresuid((uid_t) x->args[0], (uid_t) x->args[1],
-+ (uid_t) x->args[2]));
-+}
-+
-+void
-+_cgo_libc_setreuid(argset_t* x) {
-+ SET_RETVAL(setreuid((uid_t) x->args[0], (uid_t) x->args[1]));
-+}
-+
-+void
-+_cgo_libc_setuid(argset_t* x) {
-+ SET_RETVAL(setuid((uid_t) x->args[0]));
-+}
-diff --git a/src/runtime/cgocall.go b/src/runtime/cgocall.go
-index 5f8ff8139a..04a6b89cf0 100644
---- a/src/runtime/cgocall.go
-+++ b/src/runtime/cgocall.go
-@@ -89,6 +89,21 @@ import (
- // Length must match arg.Max in x_cgo_callers in runtime/cgo/gcc_traceback.c.
- type cgoCallers [32]uintptr
-
-+// argset matches runtime/cgo/linux_syscall.c:argset_t
-+type argset struct {
-+ args unsafe.Pointer
-+ retval uintptr
-+}
-+
-+// wrapper for syscall package to call cgocall for libc (cgo) calls.
-+//go:linkname syscall_cgocaller syscall.cgocaller
-+//go:nosplit
-+func syscall_cgocaller(fn unsafe.Pointer, args ...uintptr) uintptr {
-+ as := argset{args: unsafe.Pointer(&args[0])}
-+ cgocall(fn, unsafe.Pointer(&as))
-+ return as.retval
-+}
-+
- // Call from Go to C.
- //go:nosplit
- func cgocall(fn, arg unsafe.Pointer) int32 {
-diff --git a/src/runtime/proc.go b/src/runtime/proc.go
-index d264e1d120..7464304fa4 100644
---- a/src/runtime/proc.go
-+++ b/src/runtime/proc.go
-@@ -130,6 +130,9 @@ func main() {
- mainStarted = true
-
- if GOARCH != "wasm" { // no threads on wasm yet, so no sysmon
-+ // For doPosixSyscall, we register sysmon is not ready
-+ // for the world to be stopped.
-+ atomic.Store(&sched.sysmonflux, 1)
- systemstack(func() {
- newm(sysmon, nil)
- })
-@@ -885,6 +888,69 @@ func startTheWorld() {
- getg().m.preemptoff = ""
- }
-
-+// doPosixSyscall serializes Go execution and executes a specified
-+// syscall on all m's.
-+//go:linkname doPosixSyscall syscall.doPosixSyscall
-+func doPosixSyscall(fn func(bool) bool) {
-+ if fn == nil {
-+ return
-+ }
-+ for atomic.Load(&sched.sysmonflux) != 0 {
-+ usleep(57) // wait for sysmon to be fully up.
-+ }
-+ stopTheWorld("doposixsyscall")
-+ if x := fn(true); x {
-+ _g_ := getg()
-+ tid := _g_.m.procid
-+ for tm := allm; tm != nil; tm = tm.alllink {
-+ if tm.procid == tid {
-+ continue
-+ }
-+ lock(&tm.mfixlock)
-+ tm.mfixupfn = fn
-+ if tm.park.key == 0 {
-+ // Because tm.mfixupfn is set, this
-+ // will cause the wakeup to be short
-+ // lived (once the mutex is
-+ // unlocked). The next real wakeup
-+ // will occur after startTheWorld() is
-+ // called.
-+ notewakeup(&tm.park)
-+ }
-+ unlock(&tm.mfixlock)
-+ }
-+ for {
-+ done := true
-+ for tm := allm; tm != nil; tm = tm.alllink {
-+ if tm.procid == tid || tm.procid == 0 {
-+ continue
-+ }
-+ lock(&tm.mfixlock)
-+ done = done && (tm.mfixupfn == nil)
-+ unlock(&tm.mfixlock)
-+ }
-+ if done {
-+ break
-+ }
-+ // if needed force sysmon and/or newmHandoff to wakeup.
-+ lock(&sched.lock)
-+ if atomic.Load(&sched.sysmonwait) != 0 {
-+ atomic.Store(&sched.sysmonwait, 0)
-+ notewakeup(&sched.sysmonnote)
-+ }
-+ unlock(&sched.lock)
-+ lock(&newmHandoff.lock)
-+ if newmHandoff.waiting {
-+ newmHandoff.waiting = false
-+ notewakeup(&newmHandoff.wake)
-+ }
-+ unlock(&newmHandoff.lock)
-+ usleep(293)
-+ }
-+ }
-+ startTheWorld()
-+}
-+
- // stopTheWorldGC has the same effect as stopTheWorld, but blocks
- // until the GC is not running. It also blocks a GC from starting
- // until startTheWorldGC is called.
-@@ -1804,6 +1870,21 @@ func startTemplateThread() {
- newm(templateThread, nil)
- }
-
-+// mDidFixup runs any outstanding fixup function for the running m.
-+//go:nosplit
-+//go:nowritebarrierrec
-+func mDidFixup() bool {
-+ _g_ := getg()
-+ lock(&_g_.m.mfixlock)
-+ fn := _g_.m.mfixupfn
-+ if fn != nil {
-+ atomic.Storeuintptr((*uintptr)(unsafe.Pointer(&_g_.m.mfixupfn)), 0)
-+ fn(false)
-+ }
-+ unlock(&_g_.m.mfixlock)
-+ return fn != nil
-+}
-+
- // templateThread is a thread in a known-good state that exists solely
- // to start new threads in known-good states when the calling thread
- // may not be in a good state.
-@@ -1840,6 +1921,7 @@ func templateThread() {
- noteclear(&newmHandoff.wake)
- unlock(&newmHandoff.lock)
- notesleep(&newmHandoff.wake)
-+ mDidFixup()
- }
- }
-
-@@ -1861,8 +1943,14 @@ func stopm() {
- lock(&sched.lock)
- mput(_g_.m)
- unlock(&sched.lock)
-- notesleep(&_g_.m.park)
-- noteclear(&_g_.m.park)
-+ // Loop only if we are woken up to perform a mfixupfn call.
-+ for {
-+ notesleep(&_g_.m.park)
-+ noteclear(&_g_.m.park)
-+ if !mDidFixup() {
-+ break
-+ }
-+ }
- acquirep(_g_.m.nextp.ptr())
- _g_.m.nextp = 0
- }
-@@ -4457,9 +4545,14 @@ func sysmon() {
- checkdead()
- unlock(&sched.lock)
-
-+ // For doPosixSyscall, sysmon is sufficiently up to
-+ // participate in fixups.
-+ atomic.Store(&sched.sysmonflux, 0)
-+
- lasttrace := int64(0)
- idle := 0 // how many cycles in succession we had not wokeup somebody
- delay := uint32(0)
-+
- for {
- if idle == 0 { // start with 20us sleep...
- delay = 20
-@@ -4470,6 +4563,7 @@ func sysmon() {
- delay = 10 * 1000
- }
- usleep(delay)
-+ mDidFixup()
- now := nanotime()
- next := timeSleepUntil()
- if debug.schedtrace <= 0 && (sched.gcwaiting != 0 || atomic.Load(&sched.npidle) == uint32(gomaxprocs)) {
-@@ -4489,6 +4583,7 @@ func sysmon() {
- osRelax(true)
- }
- notetsleep(&sched.sysmonnote, sleep)
-+ mDidFixup()
- if shouldRelax {
- osRelax(false)
- }
-@@ -4525,12 +4620,14 @@ func sysmon() {
- incidlelocked(1)
- }
- }
-+ mDidFixup()
- if next < now {
- // There are timers that should have already run,
- // perhaps because there is an unpreemptible P.
- // Try to start an M to run them.
- startm(nil, false)
- }
-+
- // retake P's blocked in syscalls
- // and preempt long running G's
- if retake(now) != 0 {
-diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go
-index 3f9e51c528..7bfc8a2998 100644
---- a/src/runtime/runtime2.go
-+++ b/src/runtime/runtime2.go
-@@ -524,6 +524,9 @@ type m struct {
- syscalltick uint32
- freelink *m // on sched.freem
-
-+ mfixlock mutex // lock to protect mfixupfn
-+ mfixupfn func(bool) bool // used to synchronize OS related m state (credentials etc)
-+
- // these are here because they are too large to be on the stack
- // of low-level NOSPLIT functions.
- libcall libcall
-@@ -726,6 +729,7 @@ type schedt struct {
- stopnote note
- sysmonwait uint32
- sysmonnote note
-+ sysmonflux uint32 // while true, sysmon state in flux
-
- // safepointFn should be called on each P at the next GC
- // safepoint if p.runSafePointFn is set.
-diff --git a/src/syscall/setuidgid_32_linux.go b/src/syscall/setuidgid_32_linux.go
-index 1fe7120d1c..b0b7f61d22 100644
---- a/src/syscall/setuidgid_32_linux.go
-+++ b/src/syscall/setuidgid_32_linux.go
-@@ -12,4 +12,10 @@ const (
-
- sys_SETGID = SYS_SETGID32
- sys_SETUID = SYS_SETUID32
-+
-+ sys_SETREGID = SYS_SETREGID32
-+ sys_SETREUID = SYS_SETREUID32
-+
-+ sys_SETRESGID = SYS_SETRESGID32
-+ sys_SETRESUID = SYS_SETRESUID32
- )
-diff --git a/src/syscall/setuidgid_linux.go b/src/syscall/setuidgid_linux.go
-index 22fa334bfa..38c83c92f9 100644
---- a/src/syscall/setuidgid_linux.go
-+++ b/src/syscall/setuidgid_linux.go
-@@ -12,4 +12,10 @@ const (
-
- sys_SETGID = SYS_SETGID
- sys_SETUID = SYS_SETUID
-+
-+ sys_SETREGID = SYS_SETREGID
-+ sys_SETREUID = SYS_SETREUID
-+
-+ sys_SETRESGID = SYS_SETRESGID
-+ sys_SETRESUID = SYS_SETRESUID
- )
-diff --git a/src/syscall/syscall_linux.go b/src/syscall/syscall_linux.go
-index 2eba033d7c..a4c43976c9 100644
---- a/src/syscall/syscall_linux.go
-+++ b/src/syscall/syscall_linux.go
-@@ -257,16 +257,29 @@ func Getgroups() (gids []int, err error) {
- return
- }
-
-+var cgo_libc_setgroups unsafe.Pointer // non-nil if cgo linked.
-+
- func Setgroups(gids []int) (err error) {
-- if len(gids) == 0 {
-- return setgroups(0, nil)
-+ var arr uintptr
-+ n := uintptr(len(gids))
-+ var a []_Gid_t
-+ if n != 0 {
-+ a = make([]_Gid_t, len(gids))
-+ for i, v := range gids {
-+ a[i] = _Gid_t(v)
-+ }
-+ arr = uintptr(unsafe.Pointer(&a[0]))
- }
--
-- a := make([]_Gid_t, len(gids))
-- for i, v := range gids {
-- a[i] = _Gid_t(v)
-+ if cgo_libc_setgroups == nil {
-+ if _, _, e1 := PosixSyscall(SYS_SETGROUPS, n, arr, 0); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ return
-+ }
-+ if ret := cgocaller(cgo_libc_setgroups, n, arr); ret != 0 {
-+ err = errnoErr(Errno(ret))
- }
-- return setgroups(len(a), &a[0])
-+ return
- }
-
- type WaitStatus uint32
-@@ -943,17 +956,200 @@ func Getpgrp() (pid int) {
- //sysnb Setsid() (pid int, err error)
- //sysnb Settimeofday(tv *Timeval) (err error)
-
--// issue 1435.
--// On linux Setuid and Setgid only affects the current thread, not the process.
--// This does not match what most callers expect so we must return an error
--// here rather than letting the caller think that the call succeeded.
-+// posixCaller holds the input and output state for performing a
-+// posixSyscall that needs to synchronize all OS thread state. Linux
-+// generally does not always support this natively, so we have to
-+// manipulate the runtime to fix things up.
-+type posixCaller struct {
-+ // arguments
-+ trap, a1, a2, a3, a4, a5, a6 uintptr
-+
-+ // return values (only set by 0th invocation)
-+ r1, r2 uintptr
-+
-+ // err is the error code
-+ err Errno
-+}
-+
-+// doSyscall is a callback for executing a syscall on the current m
-+// (OS thread).
-+//go:nosplit
-+func (pc *posixCaller) doSyscall(initial bool) bool {
-+ r1, r2, err := RawSyscall(pc.trap, pc.a1, pc.a2, pc.a3)
-+ if initial {
-+ pc.r1 = r1
-+ pc.r2 = r2
-+ pc.err = err
-+ }
-+ return err == 0
-+}
-+
-+// doSyscall6 is a callback for executing a syscall6 on the current m
-+// (OS thread).
-+//go:nosplit
-+func (pc *posixCaller) doSyscall6(initial bool) bool {
-+ r1, r2, err := RawSyscall6(pc.trap, pc.a1, pc.a2, pc.a3, pc.a4, pc.a5, pc.a6)
-+ if initial {
-+ pc.r1 = r1
-+ pc.r2 = r2
-+ pc.err = err
-+ }
-+ return err == 0
-+}
-+
-+// Provided by runtime.doPosixSyscall which serializes the world and
-+// invokes the fn on each OS thread (what the runtime refers to as
-+// m's). Once this function returns, all threads are in sync.
-+func doPosixSyscall(fn func(bool) bool)
-+
-+// PosixSyscall performs a syscall with POSIX semantics - namely it
-+// serializes the runtime and performs the syscall once for each OS
-+// thread of the Go runtime. The return values and error status are
-+// from the first invocation. If this first invocation fails, no more
-+// attempts are made.
-+func PosixSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno) {
-+ pc := &posixCaller{
-+ trap: trap,
-+ a1: a1,
-+ a2: a2,
-+ a3: a3,
-+ }
-+ doPosixSyscall(pc.doSyscall)
-+ r1 = pc.r1
-+ r2 = pc.r2
-+ err = pc.err
-+ return
-+}
-
--func Setuid(uid int) (err error) {
-- return EOPNOTSUPP
-+// PosixSyscall6 performs a syscall6 with POSIX semantics - namely it
-+// serializes the runtime and performs the syscall once for each OS
-+// thread of the Go runtime. The return values and error status are
-+// from the first invocation. If this first invocation fails, no more
-+// attempts are made.
-+func PosixSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno) {
-+ pc := &posixCaller{
-+ trap: trap,
-+ a1: a1,
-+ a2: a2,
-+ a3: a3,
-+ a4: a4,
-+ a5: a5,
-+ a6: a6,
-+ }
-+ doPosixSyscall(pc.doSyscall6)
-+ r1 = pc.r1
-+ r2 = pc.r2
-+ err = pc.err
-+ return
-+}
-+
-+// linked by runtime.cgocall.go
-+func cgocaller(unsafe.Pointer, ...uintptr) uintptr
-+
-+var cgo_libc_setegid unsafe.Pointer // non-nil if cgo linked.
-+
-+const minus1 = ^uintptr(0)
-+
-+func Setegid(egid int) (err error) {
-+ if cgo_libc_setegid == nil {
-+ if _, _, e1 := PosixSyscall(SYS_SETRESGID, minus1, uintptr(egid), minus1); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ } else if ret := cgocaller(cgo_libc_setegid, uintptr(egid)); ret != 0 {
-+ err = errnoErr(Errno(ret))
-+ }
-+ return
-+}
-+
-+var cgo_libc_seteuid unsafe.Pointer // non-nil if cgo linked.
-+
-+func Seteuid(euid int) (err error) {
-+ if cgo_libc_seteuid == nil {
-+ if _, _, e1 := PosixSyscall(SYS_SETRESUID, minus1, uintptr(euid), minus1); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ } else if ret := cgocaller(cgo_libc_seteuid, uintptr(euid)); ret != 0 {
-+ err = errnoErr(Errno(ret))
-+ }
-+ return
- }
-
-+var cgo_libc_setgid unsafe.Pointer // non-nil if cgo linked.
-+
- func Setgid(gid int) (err error) {
-- return EOPNOTSUPP
-+ if cgo_libc_setgid == nil {
-+ if _, _, e1 := PosixSyscall(sys_SETGID, uintptr(gid), 0, 0); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ } else if ret := cgocaller(cgo_libc_setgid, uintptr(gid)); ret != 0 {
-+ err = errnoErr(Errno(ret))
-+ }
-+ return
-+}
-+
-+var cgo_libc_setregid unsafe.Pointer // non-nil if cgo linked.
-+
-+func Setregid(rgid, egid int) (err error) {
-+ if cgo_libc_setregid == nil {
-+ if _, _, e1 := PosixSyscall(sys_SETREGID, uintptr(rgid), uintptr(egid), 0); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ } else if ret := cgocaller(cgo_libc_setregid, uintptr(rgid), uintptr(egid)); ret != 0 {
-+ err = errnoErr(Errno(ret))
-+ }
-+ return
-+}
-+
-+var cgo_libc_setresgid unsafe.Pointer // non-nil if cgo linked.
-+
-+func Setresgid(rgid, egid, sgid int) (err error) {
-+ if cgo_libc_setresgid == nil {
-+ if _, _, e1 := PosixSyscall(sys_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid)); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ } else if ret := cgocaller(cgo_libc_setresgid, uintptr(rgid), uintptr(egid), uintptr(sgid)); ret != 0 {
-+ err = errnoErr(Errno(ret))
-+ }
-+ return
-+}
-+
-+var cgo_libc_setresuid unsafe.Pointer // non-nil if cgo linked.
-+
-+func Setresuid(ruid, euid, suid int) (err error) {
-+ if cgo_libc_setresuid == nil {
-+ if _, _, e1 := PosixSyscall(sys_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid)); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ } else if ret := cgocaller(cgo_libc_setresuid, uintptr(ruid), uintptr(euid), uintptr(suid)); ret != 0 {
-+ err = errnoErr(Errno(ret))
-+ }
-+ return
-+}
-+
-+var cgo_libc_setreuid unsafe.Pointer // non-nil if cgo linked.
-+
-+func Setreuid(ruid, euid int) (err error) {
-+ if cgo_libc_setreuid == nil {
-+ if _, _, e1 := PosixSyscall(sys_SETREUID, uintptr(ruid), uintptr(euid), 0); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ } else if ret := cgocaller(cgo_libc_setreuid, uintptr(ruid), uintptr(euid)); ret != 0 {
-+ err = errnoErr(Errno(ret))
-+ }
-+ return
-+}
-+
-+var cgo_libc_setuid unsafe.Pointer // non-nil if cgo linked.
-+
-+func Setuid(uid int) (err error) {
-+ if cgo_libc_setuid == nil {
-+ if _, _, e1 := PosixSyscall(sys_SETUID, uintptr(uid), 0, 0); e1 != 0 {
-+ err = errnoErr(e1)
-+ }
-+ } else if ret := cgocaller(cgo_libc_setuid, uintptr(uid)); ret != 0 {
-+ err = errnoErr(Errno(ret))
-+ }
-+ return
- }
-
- //sys Setpriority(which int, who int, prio int) (err error)
-diff --git a/src/syscall/syscall_linux_386.go b/src/syscall/syscall_linux_386.go
-index 3c1e6e4218..9676c99ba1 100644
---- a/src/syscall/syscall_linux_386.go
-+++ b/src/syscall/syscall_linux_386.go
-@@ -70,16 +70,11 @@ func Pipe2(p []int, flags int) (err error) {
- //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
- //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32
- //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32
--//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32
--//sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32
--//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
- //sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
- //sys Truncate(path string, length int64) (err error) = SYS_TRUNCATE64
- //sys Ustat(dev int, ubuf *Ustat_t) (err error)
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
--//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
- //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
-
- //sys mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
-diff --git a/src/syscall/syscall_linux_amd64.go b/src/syscall/syscall_linux_amd64.go
-index 0f28b55d47..1906d76497 100644
---- a/src/syscall/syscall_linux_amd64.go
-+++ b/src/syscall/syscall_linux_amd64.go
-@@ -33,11 +33,7 @@ const (
- //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
- //sys Setfsgid(gid int) (err error)
- //sys Setfsuid(uid int) (err error)
--//sysnb Setregid(rgid int, egid int) (err error)
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
--//sysnb Setresuid(ruid int, euid int, suid int) (err error)
- //sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
--//sysnb Setreuid(ruid int, euid int) (err error)
- //sys Shutdown(fd int, how int) (err error)
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
- //sys Statfs(path string, buf *Statfs_t) (err error)
-@@ -50,7 +46,6 @@ const (
- //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sys fstatat(fd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
--//sysnb setgroups(n int, list *_Gid_t) (err error)
- //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
- //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
- //sysnb socket(domain int, typ int, proto int) (fd int, err error)
-diff --git a/src/syscall/syscall_linux_arm.go b/src/syscall/syscall_linux_arm.go
-index d346029a1f..6f0eb01668 100644
---- a/src/syscall/syscall_linux_arm.go
-+++ b/src/syscall/syscall_linux_arm.go
-@@ -66,7 +66,6 @@ func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
- //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error) = SYS_GETGROUPS32
--//sysnb setgroups(n int, list *_Gid_t) (err error) = SYS_SETGROUPS32
- //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
- //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
- //sysnb socket(domain int, typ int, proto int) (fd int, err error)
-@@ -97,10 +96,6 @@ func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
- //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error) = SYS__NEWSELECT
- //sys Setfsgid(gid int) (err error) = SYS_SETFSGID32
- //sys Setfsuid(uid int) (err error) = SYS_SETFSUID32
--//sysnb Setregid(rgid int, egid int) (err error) = SYS_SETREGID32
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error) = SYS_SETRESGID32
--//sysnb Setresuid(ruid int, euid int, suid int) (err error) = SYS_SETRESUID32
--//sysnb Setreuid(ruid int, euid int) (err error) = SYS_SETREUID32
- //sys Shutdown(fd int, how int) (err error)
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
- //sys Ustat(dev int, ubuf *Ustat_t) (err error)
-diff --git a/src/syscall/syscall_linux_arm64.go b/src/syscall/syscall_linux_arm64.go
-index 6d3b3dfde4..2fa6932dd6 100644
---- a/src/syscall/syscall_linux_arm64.go
-+++ b/src/syscall/syscall_linux_arm64.go
-@@ -38,11 +38,7 @@ func EpollCreate(size int) (fd int, err error) {
- //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
- //sys Setfsgid(gid int) (err error)
- //sys Setfsuid(uid int) (err error)
--//sysnb Setregid(rgid int, egid int) (err error)
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
--//sysnb Setresuid(ruid int, euid int, suid int) (err error)
- //sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
--//sysnb Setreuid(ruid int, euid int) (err error)
- //sys Shutdown(fd int, how int) (err error)
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
-
-@@ -66,7 +62,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
- //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
--//sysnb setgroups(n int, list *_Gid_t) (err error)
- //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
- //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
- //sysnb socket(domain int, typ int, proto int) (fd int, err error)
-diff --git a/src/syscall/syscall_linux_mips64x.go b/src/syscall/syscall_linux_mips64x.go
-index 157c32326b..5bd54064e4 100644
---- a/src/syscall/syscall_linux_mips64x.go
-+++ b/src/syscall/syscall_linux_mips64x.go
-@@ -34,11 +34,7 @@ const (
- //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
- //sys Setfsgid(gid int) (err error)
- //sys Setfsuid(uid int) (err error)
--//sysnb Setregid(rgid int, egid int) (err error)
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
--//sysnb Setresuid(ruid int, euid int, suid int) (err error)
- //sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
--//sysnb Setreuid(ruid int, euid int) (err error)
- //sys Shutdown(fd int, how int) (err error)
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
- //sys Statfs(path string, buf *Statfs_t) (err error)
-@@ -50,7 +46,6 @@ const (
- //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
--//sysnb setgroups(n int, list *_Gid_t) (err error)
- //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
- //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
- //sysnb socket(domain int, typ int, proto int) (fd int, err error)
-diff --git a/src/syscall/syscall_linux_mipsx.go b/src/syscall/syscall_linux_mipsx.go
-index f2fea71aac..9bbef4f60c 100644
---- a/src/syscall/syscall_linux_mipsx.go
-+++ b/src/syscall/syscall_linux_mipsx.go
-@@ -35,11 +35,6 @@ func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr,
- //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) = SYS_SENDFILE64
- //sys Setfsgid(gid int) (err error)
- //sys Setfsuid(uid int) (err error)
--//sysnb Setregid(rgid int, egid int) (err error)
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
--//sysnb Setresuid(ruid int, euid int, suid int) (err error)
--
--//sysnb Setreuid(ruid int, euid int) (err error)
- //sys Shutdown(fd int, how int) (err error)
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error)
-
-@@ -51,7 +46,6 @@ func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr,
- //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
--//sysnb setgroups(n int, list *_Gid_t) (err error)
- //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
- //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
- //sysnb socket(domain int, typ int, proto int) (fd int, err error)
-diff --git a/src/syscall/syscall_linux_ppc64x.go b/src/syscall/syscall_linux_ppc64x.go
-index 22d6e56010..0e2dccc806 100644
---- a/src/syscall/syscall_linux_ppc64x.go
-+++ b/src/syscall/syscall_linux_ppc64x.go
-@@ -40,11 +40,7 @@ const (
- //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
- //sys Setfsgid(gid int) (err error)
- //sys Setfsuid(uid int) (err error)
--//sysnb Setregid(rgid int, egid int) (err error)
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
--//sysnb Setresuid(ruid int, euid int, suid int) (err error)
- //sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
--//sysnb Setreuid(ruid int, euid int) (err error)
- //sys Shutdown(fd int, how int) (err error)
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
- //sys Stat(path string, stat *Stat_t) (err error)
-@@ -56,7 +52,6 @@ const (
- //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
--//sysnb setgroups(n int, list *_Gid_t) (err error)
- //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
- //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
- //sysnb socket(domain int, typ int, proto int) (fd int, err error)
-diff --git a/src/syscall/syscall_linux_riscv64.go b/src/syscall/syscall_linux_riscv64.go
-index 4635490b9c..98ee193ef9 100644
---- a/src/syscall/syscall_linux_riscv64.go
-+++ b/src/syscall/syscall_linux_riscv64.go
-@@ -38,11 +38,7 @@ func EpollCreate(size int) (fd int, err error) {
- //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
- //sys Setfsgid(gid int) (err error)
- //sys Setfsuid(uid int) (err error)
--//sysnb Setregid(rgid int, egid int) (err error)
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
--//sysnb Setresuid(ruid int, euid int, suid int) (err error)
- //sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
--//sysnb Setreuid(ruid int, euid int) (err error)
- //sys Shutdown(fd int, how int) (err error)
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
-
-@@ -66,7 +62,6 @@ func Lstat(path string, stat *Stat_t) (err error) {
- //sys bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sys connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
--//sysnb setgroups(n int, list *_Gid_t) (err error)
- //sys getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
- //sys setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)
- //sysnb socket(domain int, typ int, proto int) (fd int, err error)
-diff --git a/src/syscall/syscall_linux_s390x.go b/src/syscall/syscall_linux_s390x.go
-index fcedf5909a..95f80e64b0 100644
---- a/src/syscall/syscall_linux_s390x.go
-+++ b/src/syscall/syscall_linux_s390x.go
-@@ -36,11 +36,7 @@ const (
- //sys sendfile(outfd int, infd int, offset *int64, count int) (written int, err error)
- //sys Setfsgid(gid int) (err error)
- //sys Setfsuid(uid int) (err error)
--//sysnb Setregid(rgid int, egid int) (err error)
--//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
--//sysnb Setresuid(ruid int, euid int, suid int) (err error)
- //sysnb Setrlimit(resource int, rlim *Rlimit) (err error)
--//sysnb Setreuid(ruid int, euid int) (err error)
- //sys Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error)
- //sys Stat(path string, stat *Stat_t) (err error)
- //sys Statfs(path string, buf *Statfs_t) (err error)
-@@ -48,7 +44,6 @@ const (
- //sys Truncate(path string, length int64) (err error)
- //sys Ustat(dev int, ubuf *Ustat_t) (err error)
- //sysnb getgroups(n int, list *_Gid_t) (nn int, err error)
--//sysnb setgroups(n int, list *_Gid_t) (err error)
-
- //sys futimesat(dirfd int, path string, times *[2]Timeval) (err error)
- //sysnb Gettimeofday(tv *Timeval) (err error)
-diff --git a/src/syscall/zsyscall_linux_386.go b/src/syscall/zsyscall_linux_386.go
-index cdf0bfb86e..5a749ff3f3 100644
---- a/src/syscall/zsyscall_linux_386.go
-+++ b/src/syscall/zsyscall_linux_386.go
-@@ -1291,46 +1291,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID32, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID32, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID32, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID32, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) {
- r0, _, e1 := Syscall6(SYS_SPLICE, uintptr(rfd), uintptr(unsafe.Pointer(roff)), uintptr(wfd), uintptr(unsafe.Pointer(woff)), uintptr(len), uintptr(flags))
- n = int(r0)
-@@ -1388,16 +1348,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS32, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// 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 := Syscall6(SYS__NEWSELECT, uintptr(nfd), uintptr(unsafe.Pointer(r)), uintptr(unsafe.Pointer(w)), uintptr(unsafe.Pointer(e)), uintptr(unsafe.Pointer(timeout)), 0)
- n = int(r0)
-diff --git a/src/syscall/zsyscall_linux_amd64.go b/src/syscall/zsyscall_linux_amd64.go
-index a7d55e6894..34b624c1d4 100644
---- a/src/syscall/zsyscall_linux_amd64.go
-+++ b/src/syscall/zsyscall_linux_amd64.go
-@@ -1308,36 +1308,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Setrlimit(resource int, rlim *Rlimit) (err error) {
- _, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
- if e1 != 0 {
-@@ -1348,16 +1318,6 @@ func Setrlimit(resource int, rlim *Rlimit) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1497,16 +1457,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_arm.go b/src/syscall/zsyscall_linux_arm.go
-index 1a9a21a4f3..4d133766f7 100644
---- a/src/syscall/zsyscall_linux_arm.go
-+++ b/src/syscall/zsyscall_linux_arm.go
-@@ -1120,16 +1120,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS32, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-@@ -1427,46 +1417,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID32, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID32, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID32, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID32, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_arm64.go b/src/syscall/zsyscall_linux_arm64.go
-index b62383e703..7e127170da 100644
---- a/src/syscall/zsyscall_linux_arm64.go
-+++ b/src/syscall/zsyscall_linux_arm64.go
-@@ -1282,36 +1282,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Setrlimit(resource int, rlim *Rlimit) (err error) {
- _, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
- if e1 != 0 {
-@@ -1322,16 +1292,6 @@ func Setrlimit(resource int, rlim *Rlimit) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1446,16 +1406,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_mips.go b/src/syscall/zsyscall_linux_mips.go
-index 7945b55642..a8522dc571 100644
---- a/src/syscall/zsyscall_linux_mips.go
-+++ b/src/syscall/zsyscall_linux_mips.go
-@@ -1266,46 +1266,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1415,16 +1375,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_mips64.go b/src/syscall/zsyscall_linux_mips64.go
-index c0aad6439f..1219fcc6cb 100644
---- a/src/syscall/zsyscall_linux_mips64.go
-+++ b/src/syscall/zsyscall_linux_mips64.go
-@@ -1297,36 +1297,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Setrlimit(resource int, rlim *Rlimit) (err error) {
- _, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
- if e1 != 0 {
-@@ -1337,16 +1307,6 @@ func Setrlimit(resource int, rlim *Rlimit) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1471,16 +1431,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_mips64le.go b/src/syscall/zsyscall_linux_mips64le.go
-index 271684137d..c3737bf3cf 100644
---- a/src/syscall/zsyscall_linux_mips64le.go
-+++ b/src/syscall/zsyscall_linux_mips64le.go
-@@ -1297,36 +1297,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Setrlimit(resource int, rlim *Rlimit) (err error) {
- _, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
- if e1 != 0 {
-@@ -1337,16 +1307,6 @@ func Setrlimit(resource int, rlim *Rlimit) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1471,16 +1431,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_mipsle.go b/src/syscall/zsyscall_linux_mipsle.go
-index f0ee48f9be..5006f4a409 100644
---- a/src/syscall/zsyscall_linux_mipsle.go
-+++ b/src/syscall/zsyscall_linux_mipsle.go
-@@ -1266,46 +1266,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1415,16 +1375,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_ppc64.go b/src/syscall/zsyscall_linux_ppc64.go
-index 7bdf981dcd..323be988be 100644
---- a/src/syscall/zsyscall_linux_ppc64.go
-+++ b/src/syscall/zsyscall_linux_ppc64.go
-@@ -1370,36 +1370,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Setrlimit(resource int, rlim *Rlimit) (err error) {
- _, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
- if e1 != 0 {
-@@ -1410,16 +1380,6 @@ func Setrlimit(resource int, rlim *Rlimit) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1549,16 +1509,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_ppc64le.go b/src/syscall/zsyscall_linux_ppc64le.go
-index c45eebf4ad..99aea6b559 100644
---- a/src/syscall/zsyscall_linux_ppc64le.go
-+++ b/src/syscall/zsyscall_linux_ppc64le.go
-@@ -1370,36 +1370,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Setrlimit(resource int, rlim *Rlimit) (err error) {
- _, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
- if e1 != 0 {
-@@ -1410,16 +1380,6 @@ func Setrlimit(resource int, rlim *Rlimit) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1549,16 +1509,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_riscv64.go b/src/syscall/zsyscall_linux_riscv64.go
-index afba4167f3..1b24b3669e 100644
---- a/src/syscall/zsyscall_linux_riscv64.go
-+++ b/src/syscall/zsyscall_linux_riscv64.go
-@@ -1282,36 +1282,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Setrlimit(resource int, rlim *Rlimit) (err error) {
- _, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
- if e1 != 0 {
-@@ -1322,16 +1292,6 @@ func Setrlimit(resource int, rlim *Rlimit) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Shutdown(fd int, how int) (err error) {
- _, _, e1 := Syscall(SYS_SHUTDOWN, uintptr(fd), uintptr(how), 0)
- if e1 != 0 {
-@@ -1446,16 +1406,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error) {
- _, _, e1 := Syscall6(SYS_GETSOCKOPT, uintptr(s), uintptr(level), uintptr(name), uintptr(val), uintptr(unsafe.Pointer(vallen)), 0)
- if e1 != 0 {
-diff --git a/src/syscall/zsyscall_linux_s390x.go b/src/syscall/zsyscall_linux_s390x.go
-index 9ada8dc534..5717206f28 100644
---- a/src/syscall/zsyscall_linux_s390x.go
-+++ b/src/syscall/zsyscall_linux_s390x.go
-@@ -1340,36 +1340,6 @@ func Setfsuid(uid int) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setregid(rgid int, egid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREGID, uintptr(rgid), uintptr(egid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresgid(rgid int, egid int, sgid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESGID, uintptr(rgid), uintptr(egid), uintptr(sgid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
--func Setresuid(ruid int, euid int, suid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETRESUID, uintptr(ruid), uintptr(euid), uintptr(suid))
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Setrlimit(resource int, rlim *Rlimit) (err error) {
- _, _, e1 := RawSyscall(SYS_SETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
- if e1 != 0 {
-@@ -1380,16 +1350,6 @@ func Setrlimit(resource int, rlim *Rlimit) (err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func Setreuid(ruid int, euid int) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETREUID, uintptr(ruid), uintptr(euid), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func Splice(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int64, err error) {
- r0, _, e1 := Syscall6(SYS_SPLICE, uintptr(rfd), uintptr(unsafe.Pointer(roff)), uintptr(wfd), uintptr(unsafe.Pointer(woff)), uintptr(len), uintptr(flags))
- n = int64(r0)
-@@ -1477,16 +1437,6 @@ func getgroups(n int, list *_Gid_t) (nn int, err error) {
-
- // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
--func setgroups(n int, list *_Gid_t) (err error) {
-- _, _, e1 := RawSyscall(SYS_SETGROUPS, uintptr(n), uintptr(unsafe.Pointer(list)), 0)
-- if e1 != 0 {
-- err = errnoErr(e1)
-- }
-- return
--}
--
--// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
--
- func futimesat(dirfd int, path string, times *[2]Timeval) (err error) {
- var _p0 *byte
- _p0, err = BytePtrFromString(path)
---
-2.11.0
-
diff --git a/go/cgo-required.sh b/go/cgo-required.sh
index 8f22d43..5e7e98f 100755
--- a/go/cgo-required.sh
+++ b/go/cgo-required.sh
@@ -1,11 +1,11 @@
#!/bin/bash
#
-# Runtime check for whether or not syscall.PosixSyscall is available to
-# the working go runtime or not. If it isn't we always have to use
-# libcap/psx to get POSIX semantics for syscalls that change security
-# state.
+# Runtime check for whether or not syscall.PerOSThreadSyscall is
+# available to the working go runtime or not. If it isn't we always
+# have to use libcap/psx to get POSIX semantics for syscalls that
+# change security state.
-if [ -z "$(go doc syscall 2>/dev/null|grep PosixSyscall)" ]; then
+if [ -z "$(go doc syscall 2>/dev/null|grep PerOSThreadSyscall)" ]; then
echo "1"
else
echo "0"
diff --git a/go/syscalls.sh b/go/syscalls.sh
index eeba450..b91424d 100755
--- a/go/syscalls.sh
+++ b/go/syscalls.sh
@@ -6,14 +6,9 @@
exit 1
fi
-# This is something that we should revisit if golang adopts my
-# syscall.PosixSyscall patch. At that stage, we won't need cgo to
-# support a pure Go program. However, we will need a to use the cgo
-# version if the program being compiled actually needs cgo. That is,
-# we should have two permenant files that use +build lines to control
-# which one is built based on cgo or not.
-
-if [ -z "$(go doc syscall 2>/dev/null|grep PosixSyscall)" ]; then
+# We use one or the other syscalls.go file based on whether or not the
+# Go runtime include syscall.PerOSThreadSyscall or not.
+if [ -z "$(go doc syscall 2>/dev/null|grep PerOSThreadSyscall)" ]; then
rm -f "${dir}/syscalls_cgo.go"
cat > "${dir}/syscalls.go" <<EOF
// +build linux
@@ -26,7 +21,7 @@
)
// callKernel variables overridable for testing purposes.
-// (Go build tree has no syscall.PosixSyscall support.)
+// (Go build tree has no syscall.PerOSThreadSyscall support.)
var callWKernel = psx.Syscall3
var callWKernel6 = psx.Syscall6
var callRKernel = syscall.RawSyscall
@@ -45,9 +40,9 @@
import "syscall"
// callKernel variables overridable for testing purposes.
-// (Go build tree contains syscall.PosixSyscall support.)
-var callWKernel = syscall.PosixSyscall
-var callWKernel6 = syscall.PosixSyscall6
+// (Go build tree contains syscall.PerOSThreadSyscall support.)
+var callWKernel = syscall.PerOSThreadSyscall
+var callWKernel6 = syscall.PerOSThreadSyscall6
var callRKernel = syscall.RawSyscall
var callRKernel6 = syscall.RawSyscall6
EOF
