// which Go of course has no choice but to respect.
func init() {
	var lim Rlimit
	if err := Getrlimit(RLIMIT_NOFILE, &lim); err == nil && lim.Cur != lim.Max {
		origRlimitNofile.Store(&lim)
		nlim := lim
		nlim.Cur = nlim.Max
		adjustFileLimit(&nlim)
		setrlimit(RLIMIT_NOFILE, &nlim)
	}
}

func Setrlimit(resource int, rlim *Rlimit) error {
	if resource == RLIMIT_NOFILE {

package app

import "golang.org/x/sys/unix"

func raiseFileLimits() (uint64, error) {
	rlimit := unix.Rlimit{}
	if err := unix.Getrlimit(unix.RLIMIT_NOFILE, &rlimit); err != nil {
		return 0, err
	}
	rlimit.Cur = rlimit.Max
	if err := unix.Setrlimit(unix.RLIMIT_NOFILE, &rlimit); err != nil {
		return 0, err
	}

	return rlimit.Cur, nil

func enableCore() {
	debug.SetTraceback("crash")

	var lim syscall.Rlimit
	err := syscall.Getrlimit(syscall.RLIMIT_CORE, &lim)
	if err != nil {
		panic(fmt.Sprintf("error getting rlimit: %v", err))
	}
	lim.Cur = lim.Max
	fmt.Fprintf(os.Stderr, "Setting RLIMIT_CORE = %+#v\n", lim)
	err = syscall.Setrlimit(syscall.RLIMIT_CORE, &lim)
	if err != nil {
		panic(fmt.Sprintf("error setting rlimit: %v", err))
	}
}

//sys	Setpriority(which int, who int, prio int) (err error)
//sys	Setprivexec(flag int) (err error)
//sysnb	Setregid(rgid int, egid int) (err error)
//sysnb	Setreuid(ruid int, euid int) (err error)
//sysnb	setrlimit(which int, lim *Rlimit) (err error)
//sysnb	Setsid() (pid int, err error)
//sysnb	Settimeofday(tp *Timeval) (err error)
//sysnb	Setuid(uid int) (err error)
//sys	Symlink(path string, link string) (err error)

		}
	}()
	return true
}

// SetLimit limits the number of active goroutines in this group to at most n.
// A negative value indicates no limit.
//
// Any subsequent call to the Go method will block until it can add an active
// goroutine without exceeding the configured limit.
//
// The limit must not be modified while any goroutines in the group are active.
func (g *Group) SetLimit(n int) {
	if n < 0 {
		g.sem = nil

//sysnb	Setpgid(pid int, pgid int) (err error)
//sys	Setpriority(which int, who int, prio int) (err error)
//sysnb	Setregid(rgid int, egid int) (err error)
//sysnb	Setreuid(ruid int, euid int) (err error)
//sysnb	setrlimit(which int, lim *Rlimit) (err error)
//sysnb	Setsid() (pid int, err error)
//sysnb	Setuid(uid int) (err error)
//sys	Shutdown(s int, how int) (err error) = libsocket.shutdown
//sys	Stat(path string, stat *Stat_t) (err error)

//sysnb	Setpgid(pid int, pgid int) (err error)
//sys	Setpriority(which int, who int, prio int) (err error)
//sysnb	Setregid(rgid int, egid int) (err error)
//sysnb	Setreuid(ruid int, euid int) (err error)
//sysnb	setrlimit(which int, lim *Rlimit) (err error)
//sys	Stat(path string, stat *Stat_t) (err error)
//sys	Statfs(path string, buf *Statfs_t) (err error)
//sys	Symlink(path string, link string) (err error)

func setrlimit(which int, lim *Rlimit) (err error) {
	_, _, e1 := rawSyscall(abi.FuncPCABI0(libc_setrlimit_trampoline), uintptr(which), uintptr(unsafe.Pointer(lim)), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_setrlimit_trampoline()

//go:cgo_import_dynamic libc_setrlimit setrlimit "libc.so"

//go:cgo_import_dynamic libc_Setpriority setpriority "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"
//go:cgo_import_dynamic libc_setrlimit setrlimit "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Stat stat "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Statfs statfs "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_Symlink symlink "libc.a/shr_64.o"

func setrlimit(which int, lim *Rlimit) (err error) {
	_, _, e1 := rawSyscall(abi.FuncPCABI0(libc_setrlimit_trampoline), uintptr(which), uintptr(unsafe.Pointer(lim)), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_setrlimit_trampoline()

//go:cgo_import_dynamic libc_setrlimit setrlimit "libc.so"