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2596 lines (2017 loc) · 60.5 KB
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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#include <node.h>
#include <uv.h>
#include <v8-debug.h>
#include <node_dtrace.h>
#include <locale.h>
#include <signal.h>
#include <stdio.h>
#if defined(_MSC_VER)
#define snprintf _snprintf
#endif
#include <stdlib.h>
#include <string.h>
#if !defined(_MSC_VER)
#include <strings.h>
#else
#define strcasecmp _stricmp
#endif
#include <limits.h> /* PATH_MAX */
#include <assert.h>
#if !defined(_MSC_VER)
#include <unistd.h> /* setuid, getuid */
#else
#include <direct.h>
#define chdir _chdir
#define getcwd _getcwd
#include <process.h>
#define getpid _getpid
#include <io.h>
#define umask _umask
typedef int mode_t;
#endif
#include <errno.h>
#include <sys/types.h>
#if defined(__MINGW32__) || defined(_MSC_VER)
# include <platform_win32.h> /* winapi_perror() */
# ifdef PTW32_STATIC_LIB
extern "C" {
BOOL __cdecl pthread_win32_process_attach_np (void);
BOOL __cdecl pthread_win32_process_detach_np (void);
}
# endif
#endif
#ifdef __POSIX__
# include <dlfcn.h> /* dlopen(), dlsym() */
# include <pwd.h> /* getpwnam() */
# include <grp.h> /* getgrnam() */
#endif
#include "platform.h"
#include <node_buffer.h>
#ifdef __POSIX__
# include <node_io_watcher.h>
#endif
#include <node_net.h>
#include <node_cares.h>
#include <node_file.h>
#include <node_http_parser.h>
#ifdef __POSIX__
# include <node_signal_watcher.h>
# include <node_stat_watcher.h>
# include <node_timer.h>
#endif
#if !defined(_MSC_VER)
#include <node_child_process.h>
#endif
#include <node_constants.h>
#include <node_stdio.h>
#include <node_javascript.h>
#include <node_version.h>
#include <node_string.h>
#if HAVE_OPENSSL
# include <node_crypto.h>
#endif
#include <node_script.h>
#include <v8_typed_array.h>
using namespace v8;
# ifdef __APPLE__
# include <crt_externs.h>
# define environ (*_NSGetEnviron())
# elif !defined(_MSC_VER)
extern char **environ;
# endif
namespace node {
static Persistent<Object> process;
static Persistent<String> errno_symbol;
static Persistent<String> syscall_symbol;
static Persistent<String> errpath_symbol;
static Persistent<String> code_symbol;
static Persistent<String> rss_symbol;
static Persistent<String> vsize_symbol;
static Persistent<String> heap_total_symbol;
static Persistent<String> heap_used_symbol;
static Persistent<String> listeners_symbol;
static Persistent<String> uncaught_exception_symbol;
static Persistent<String> emit_symbol;
static char *eval_string = NULL;
static int option_end_index = 0;
static bool use_debug_agent = false;
static bool debug_wait_connect = false;
static int debug_port=5858;
static int max_stack_size = 0;
static uv_check_t check_tick_watcher;
static uv_prepare_t prepare_tick_watcher;
static uv_idle_t tick_spinner;
static bool need_tick_cb;
static Persistent<String> tick_callback_sym;
static bool use_uv = true;
#ifdef OPENSSL_NPN_NEGOTIATED
static bool use_npn = true;
#else
static bool use_npn = false;
#endif
#ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
static bool use_sni = true;
#else
static bool use_sni = false;
#endif
// Buffer for getpwnam_r(), getgrpam_r() and other misc callers; keep this
// scoped at file-level rather than method-level to avoid excess stack usage.
static char getbuf[PATH_MAX + 1];
// We need to notify V8 when we're idle so that it can run the garbage
// collector. The interface to this is V8::IdleNotification(). It returns
// true if the heap hasn't be fully compacted, and needs to be run again.
// Returning false means that it doesn't have anymore work to do.
//
// A rather convoluted algorithm has been devised to determine when Node is
// idle. You'll have to figure it out for yourself.
static uv_check_t gc_check;
static uv_idle_t gc_idle;
static uv_timer_t gc_timer;
bool need_gc;
#define FAST_TICK 700.
#define GC_WAIT_TIME 5000.
#define RPM_SAMPLES 100
#define TICK_TIME(n) tick_times[(tick_time_head - (n)) % RPM_SAMPLES]
static int64_t tick_times[RPM_SAMPLES];
static int tick_time_head;
static void CheckStatus(uv_timer_t* watcher, int status);
static void StartGCTimer () {
if (!uv_is_active((uv_handle_t*) &gc_timer)) {
uv_timer_start(&node::gc_timer, node::CheckStatus, 5000., 5000.);
}
}
static void StopGCTimer () {
if (uv_is_active((uv_handle_t*) &gc_timer)) {
uv_timer_stop(&gc_timer);
}
}
static void Idle(uv_idle_t* watcher, int status) {
assert((uv_idle_t*) watcher == &gc_idle);
if (V8::IdleNotification()) {
uv_idle_stop(&gc_idle);
StopGCTimer();
}
}
// Called directly after every call to select() (or epoll, or whatever)
static void Check(uv_check_t* watcher, int status) {
assert(watcher == &gc_check);
tick_times[tick_time_head] = uv_now(uv_default_loop());
tick_time_head = (tick_time_head + 1) % RPM_SAMPLES;
StartGCTimer();
for (int i = 0; i < (int)(GC_WAIT_TIME/FAST_TICK); i++) {
double d = TICK_TIME(i+1) - TICK_TIME(i+2);
//printf("d = %f\n", d);
// If in the last 5 ticks the difference between
// ticks was less than 0.7 seconds, then continue.
if (d < FAST_TICK) {
//printf("---\n");
return;
}
}
// Otherwise start the gc!
//fprintf(stderr, "start idle 2\n");
uv_idle_start(&node::gc_idle, node::Idle);
}
static void Tick(void) {
// Avoid entering a V8 scope.
if (!need_tick_cb) return;
need_tick_cb = false;
if (uv_is_active((uv_handle_t*) &tick_spinner)) {
uv_idle_stop(&tick_spinner);
uv_unref(uv_default_loop());
}
HandleScope scope;
if (tick_callback_sym.IsEmpty()) {
// Lazily set the symbol
tick_callback_sym =
Persistent<String>::New(String::NewSymbol("_tickCallback"));
}
Local<Value> cb_v = process->Get(tick_callback_sym);
if (!cb_v->IsFunction()) return;
Local<Function> cb = Local<Function>::Cast(cb_v);
TryCatch try_catch;
cb->Call(process, 0, NULL);
if (try_catch.HasCaught()) {
FatalException(try_catch);
}
}
static void Spin(uv_idle_t* handle, int status) {
assert((uv_idle_t*) handle == &tick_spinner);
assert(status == 0);
Tick();
}
static Handle<Value> NeedTickCallback(const Arguments& args) {
HandleScope scope;
need_tick_cb = true;
// TODO: this tick_spinner shouldn't be necessary. An ev_prepare should be
// sufficent, the problem is only in the case of the very last "tick" -
// there is nothing left to do in the event loop and libev will exit. The
// ev_prepare callback isn't called before exiting. Thus we start this
// tick_spinner to keep the event loop alive long enough to handle it.
if (!uv_is_active((uv_handle_t*) &tick_spinner)) {
uv_idle_start(&tick_spinner, Spin);
uv_ref(uv_default_loop());
}
return Undefined();
}
static void PrepareTick(uv_prepare_t* handle, int status) {
assert(handle == &prepare_tick_watcher);
assert(status == 0);
Tick();
}
static void CheckTick(uv_check_t* handle, int status) {
assert(handle == &check_tick_watcher);
assert(status == 0);
Tick();
}
static inline const char *errno_string(int errorno) {
#define ERRNO_CASE(e) case e: return #e;
switch (errorno) {
#ifdef EACCES
ERRNO_CASE(EACCES);
#endif
#ifdef EADDRINUSE
ERRNO_CASE(EADDRINUSE);
#endif
#ifdef EADDRNOTAVAIL
ERRNO_CASE(EADDRNOTAVAIL);
#endif
#ifdef EAFNOSUPPORT
ERRNO_CASE(EAFNOSUPPORT);
#endif
#ifdef EAGAIN
ERRNO_CASE(EAGAIN);
#endif
#ifdef EWOULDBLOCK
# if EAGAIN != EWOULDBLOCK
ERRNO_CASE(EWOULDBLOCK);
# endif
#endif
#ifdef EALREADY
ERRNO_CASE(EALREADY);
#endif
#ifdef EBADF
ERRNO_CASE(EBADF);
#endif
#ifdef EBADMSG
ERRNO_CASE(EBADMSG);
#endif
#ifdef EBUSY
ERRNO_CASE(EBUSY);
#endif
#ifdef ECANCELED
ERRNO_CASE(ECANCELED);
#endif
#ifdef ECHILD
ERRNO_CASE(ECHILD);
#endif
#ifdef ECONNABORTED
ERRNO_CASE(ECONNABORTED);
#endif
#ifdef ECONNREFUSED
ERRNO_CASE(ECONNREFUSED);
#endif
#ifdef ECONNRESET
ERRNO_CASE(ECONNRESET);
#endif
#ifdef EDEADLK
ERRNO_CASE(EDEADLK);
#endif
#ifdef EDESTADDRREQ
ERRNO_CASE(EDESTADDRREQ);
#endif
#ifdef EDOM
ERRNO_CASE(EDOM);
#endif
#ifdef EDQUOT
ERRNO_CASE(EDQUOT);
#endif
#ifdef EEXIST
ERRNO_CASE(EEXIST);
#endif
#ifdef EFAULT
ERRNO_CASE(EFAULT);
#endif
#ifdef EFBIG
ERRNO_CASE(EFBIG);
#endif
#ifdef EHOSTUNREACH
ERRNO_CASE(EHOSTUNREACH);
#endif
#ifdef EIDRM
ERRNO_CASE(EIDRM);
#endif
#ifdef EILSEQ
ERRNO_CASE(EILSEQ);
#endif
#ifdef EINPROGRESS
ERRNO_CASE(EINPROGRESS);
#endif
#ifdef EINTR
ERRNO_CASE(EINTR);
#endif
#ifdef EINVAL
ERRNO_CASE(EINVAL);
#endif
#ifdef EIO
ERRNO_CASE(EIO);
#endif
#ifdef EISCONN
ERRNO_CASE(EISCONN);
#endif
#ifdef EISDIR
ERRNO_CASE(EISDIR);
#endif
#ifdef ELOOP
ERRNO_CASE(ELOOP);
#endif
#ifdef EMFILE
ERRNO_CASE(EMFILE);
#endif
#ifdef EMLINK
ERRNO_CASE(EMLINK);
#endif
#ifdef EMSGSIZE
ERRNO_CASE(EMSGSIZE);
#endif
#ifdef EMULTIHOP
ERRNO_CASE(EMULTIHOP);
#endif
#ifdef ENAMETOOLONG
ERRNO_CASE(ENAMETOOLONG);
#endif
#ifdef ENETDOWN
ERRNO_CASE(ENETDOWN);
#endif
#ifdef ENETRESET
ERRNO_CASE(ENETRESET);
#endif
#ifdef ENETUNREACH
ERRNO_CASE(ENETUNREACH);
#endif
#ifdef ENFILE
ERRNO_CASE(ENFILE);
#endif
#ifdef ENOBUFS
ERRNO_CASE(ENOBUFS);
#endif
#ifdef ENODATA
ERRNO_CASE(ENODATA);
#endif
#ifdef ENODEV
ERRNO_CASE(ENODEV);
#endif
#ifdef ENOENT
ERRNO_CASE(ENOENT);
#endif
#ifdef ENOEXEC
ERRNO_CASE(ENOEXEC);
#endif
#ifdef ENOLINK
ERRNO_CASE(ENOLINK);
#endif
#ifdef ENOLCK
# if ENOLINK != ENOLCK
ERRNO_CASE(ENOLCK);
# endif
#endif
#ifdef ENOMEM
ERRNO_CASE(ENOMEM);
#endif
#ifdef ENOMSG
ERRNO_CASE(ENOMSG);
#endif
#ifdef ENOPROTOOPT
ERRNO_CASE(ENOPROTOOPT);
#endif
#ifdef ENOSPC
ERRNO_CASE(ENOSPC);
#endif
#ifdef ENOSR
ERRNO_CASE(ENOSR);
#endif
#ifdef ENOSTR
ERRNO_CASE(ENOSTR);
#endif
#ifdef ENOSYS
ERRNO_CASE(ENOSYS);
#endif
#ifdef ENOTCONN
ERRNO_CASE(ENOTCONN);
#endif
#ifdef ENOTDIR
ERRNO_CASE(ENOTDIR);
#endif
#ifdef ENOTEMPTY
ERRNO_CASE(ENOTEMPTY);
#endif
#ifdef ENOTSOCK
ERRNO_CASE(ENOTSOCK);
#endif
#ifdef ENOTSUP
ERRNO_CASE(ENOTSUP);
#else
# ifdef EOPNOTSUPP
ERRNO_CASE(EOPNOTSUPP);
# endif
#endif
#ifdef ENOTTY
ERRNO_CASE(ENOTTY);
#endif
#ifdef ENXIO
ERRNO_CASE(ENXIO);
#endif
#ifdef EOVERFLOW
ERRNO_CASE(EOVERFLOW);
#endif
#ifdef EPERM
ERRNO_CASE(EPERM);
#endif
#ifdef EPIPE
ERRNO_CASE(EPIPE);
#endif
#ifdef EPROTO
ERRNO_CASE(EPROTO);
#endif
#ifdef EPROTONOSUPPORT
ERRNO_CASE(EPROTONOSUPPORT);
#endif
#ifdef EPROTOTYPE
ERRNO_CASE(EPROTOTYPE);
#endif
#ifdef ERANGE
ERRNO_CASE(ERANGE);
#endif
#ifdef EROFS
ERRNO_CASE(EROFS);
#endif
#ifdef ESPIPE
ERRNO_CASE(ESPIPE);
#endif
#ifdef ESRCH
ERRNO_CASE(ESRCH);
#endif
#ifdef ESTALE
ERRNO_CASE(ESTALE);
#endif
#ifdef ETIME
ERRNO_CASE(ETIME);
#endif
#ifdef ETIMEDOUT
ERRNO_CASE(ETIMEDOUT);
#endif
#ifdef ETXTBSY
ERRNO_CASE(ETXTBSY);
#endif
#ifdef EXDEV
ERRNO_CASE(EXDEV);
#endif
#ifdef WSAEINTR
ERRNO_CASE(WSAEINTR);
#endif
#ifdef WSAEBADF
ERRNO_CASE(WSAEBADF);
#endif
#ifdef WSAEACCES
ERRNO_CASE(WSAEACCES);
#endif
#ifdef WSAEFAULT
ERRNO_CASE(WSAEFAULT);
#endif
#ifdef WSAEINVAL
ERRNO_CASE(WSAEINVAL);
#endif
#ifdef WSAEMFILE
ERRNO_CASE(WSAEMFILE);
#endif
#ifdef WSAEWOULDBLOCK
ERRNO_CASE(WSAEWOULDBLOCK);
#endif
#ifdef WSAEINPROGRESS
ERRNO_CASE(WSAEINPROGRESS);
#endif
#ifdef WSAEALREADY
ERRNO_CASE(WSAEALREADY);
#endif
#ifdef WSAENOTSOCK
ERRNO_CASE(WSAENOTSOCK);
#endif
#ifdef WSAEDESTADDRREQ
ERRNO_CASE(WSAEDESTADDRREQ);
#endif
#ifdef WSAEMSGSIZE
ERRNO_CASE(WSAEMSGSIZE);
#endif
#ifdef WSAEPROTOTYPE
ERRNO_CASE(WSAEPROTOTYPE);
#endif
#ifdef WSAENOPROTOOPT
ERRNO_CASE(WSAENOPROTOOPT);
#endif
#ifdef WSAEPROTONOSUPPORT
ERRNO_CASE(WSAEPROTONOSUPPORT);
#endif
#ifdef WSAESOCKTNOSUPPORT
ERRNO_CASE(WSAESOCKTNOSUPPORT);
#endif
#ifdef WSAEOPNOTSUPP
ERRNO_CASE(WSAEOPNOTSUPP);
#endif
#ifdef WSAEPFNOSUPPORT
ERRNO_CASE(WSAEPFNOSUPPORT);
#endif
#ifdef WSAEAFNOSUPPORT
ERRNO_CASE(WSAEAFNOSUPPORT);
#endif
#ifdef WSAEADDRINUSE
ERRNO_CASE(WSAEADDRINUSE);
#endif
#ifdef WSAEADDRNOTAVAIL
ERRNO_CASE(WSAEADDRNOTAVAIL);
#endif
#ifdef WSAENETDOWN
ERRNO_CASE(WSAENETDOWN);
#endif
#ifdef WSAENETUNREACH
ERRNO_CASE(WSAENETUNREACH);
#endif
#ifdef WSAENETRESET
ERRNO_CASE(WSAENETRESET);
#endif
#ifdef WSAECONNABORTED
ERRNO_CASE(WSAECONNABORTED);
#endif
#ifdef WSAECONNRESET
ERRNO_CASE(WSAECONNRESET);
#endif
#ifdef WSAENOBUFS
ERRNO_CASE(WSAENOBUFS);
#endif
#ifdef WSAEISCONN
ERRNO_CASE(WSAEISCONN);
#endif
#ifdef WSAENOTCONN
ERRNO_CASE(WSAENOTCONN);
#endif
#ifdef WSAESHUTDOWN
ERRNO_CASE(WSAESHUTDOWN);
#endif
#ifdef WSAETOOMANYREFS
ERRNO_CASE(WSAETOOMANYREFS);
#endif
#ifdef WSAETIMEDOUT
ERRNO_CASE(WSAETIMEDOUT);
#endif
#ifdef WSAECONNREFUSED
ERRNO_CASE(WSAECONNREFUSED);
#endif
#ifdef WSAELOOP
ERRNO_CASE(WSAELOOP);
#endif
#ifdef WSAENAMETOOLONG
ERRNO_CASE(WSAENAMETOOLONG);
#endif
#ifdef WSAEHOSTDOWN
ERRNO_CASE(WSAEHOSTDOWN);
#endif
#ifdef WSAEHOSTUNREACH
ERRNO_CASE(WSAEHOSTUNREACH);
#endif
#ifdef WSAENOTEMPTY
ERRNO_CASE(WSAENOTEMPTY);
#endif
#ifdef WSAEPROCLIM
ERRNO_CASE(WSAEPROCLIM);
#endif
#ifdef WSAEUSERS
ERRNO_CASE(WSAEUSERS);
#endif
#ifdef WSAEDQUOT
ERRNO_CASE(WSAEDQUOT);
#endif
#ifdef WSAESTALE
ERRNO_CASE(WSAESTALE);
#endif
#ifdef WSAEREMOTE
ERRNO_CASE(WSAEREMOTE);
#endif
#ifdef WSASYSNOTREADY
ERRNO_CASE(WSASYSNOTREADY);
#endif
#ifdef WSAVERNOTSUPPORTED
ERRNO_CASE(WSAVERNOTSUPPORTED);
#endif
#ifdef WSANOTINITIALISED
ERRNO_CASE(WSANOTINITIALISED);
#endif
#ifdef WSAEDISCON
ERRNO_CASE(WSAEDISCON);
#endif
#ifdef WSAENOMORE
ERRNO_CASE(WSAENOMORE);
#endif
#ifdef WSAECANCELLED
ERRNO_CASE(WSAECANCELLED);
#endif
#ifdef WSAEINVALIDPROCTABLE
ERRNO_CASE(WSAEINVALIDPROCTABLE);
#endif
#ifdef WSAEINVALIDPROVIDER
ERRNO_CASE(WSAEINVALIDPROVIDER);
#endif
#ifdef WSAEPROVIDERFAILEDINIT
ERRNO_CASE(WSAEPROVIDERFAILEDINIT);
#endif
#ifdef WSASYSCALLFAILURE
ERRNO_CASE(WSASYSCALLFAILURE);
#endif
#ifdef WSASERVICE_NOT_FOUND
ERRNO_CASE(WSASERVICE_NOT_FOUND);
#endif
#ifdef WSATYPE_NOT_FOUND
ERRNO_CASE(WSATYPE_NOT_FOUND);
#endif
#ifdef WSA_E_NO_MORE
ERRNO_CASE(WSA_E_NO_MORE);
#endif
#ifdef WSA_E_CANCELLED
ERRNO_CASE(WSA_E_CANCELLED);
#endif
default: return "";
}
}
const char *signo_string(int signo) {
#define SIGNO_CASE(e) case e: return #e;
switch (signo) {
#ifdef SIGHUP
SIGNO_CASE(SIGHUP);
#endif
#ifdef SIGINT
SIGNO_CASE(SIGINT);
#endif
#ifdef SIGQUIT
SIGNO_CASE(SIGQUIT);
#endif
#ifdef SIGILL
SIGNO_CASE(SIGILL);
#endif
#ifdef SIGTRAP
SIGNO_CASE(SIGTRAP);
#endif
#ifdef SIGABRT
SIGNO_CASE(SIGABRT);
#endif
#ifdef SIGIOT
# if SIGABRT != SIGIOT
SIGNO_CASE(SIGIOT);
# endif
#endif
#ifdef SIGBUS
SIGNO_CASE(SIGBUS);
#endif
#ifdef SIGFPE
SIGNO_CASE(SIGFPE);
#endif
#ifdef SIGKILL
SIGNO_CASE(SIGKILL);
#endif
#ifdef SIGUSR1
SIGNO_CASE(SIGUSR1);
#endif
#ifdef SIGSEGV
SIGNO_CASE(SIGSEGV);
#endif
#ifdef SIGUSR2
SIGNO_CASE(SIGUSR2);
#endif
#ifdef SIGPIPE
SIGNO_CASE(SIGPIPE);
#endif
#ifdef SIGALRM
SIGNO_CASE(SIGALRM);
#endif
SIGNO_CASE(SIGTERM);
#ifdef SIGCHLD
SIGNO_CASE(SIGCHLD);
#endif
#ifdef SIGSTKFLT
SIGNO_CASE(SIGSTKFLT);
#endif
#ifdef SIGCONT
SIGNO_CASE(SIGCONT);
#endif
#ifdef SIGSTOP
SIGNO_CASE(SIGSTOP);
#endif
#ifdef SIGTSTP
SIGNO_CASE(SIGTSTP);
#endif
#ifdef SIGTTIN
SIGNO_CASE(SIGTTIN);
#endif
#ifdef SIGTTOU
SIGNO_CASE(SIGTTOU);
#endif
#ifdef SIGURG
SIGNO_CASE(SIGURG);
#endif
#ifdef SIGXCPU
SIGNO_CASE(SIGXCPU);
#endif
#ifdef SIGXFSZ
SIGNO_CASE(SIGXFSZ);
#endif
#ifdef SIGVTALRM
SIGNO_CASE(SIGVTALRM);
#endif
#ifdef SIGPROF
SIGNO_CASE(SIGPROF);
#endif
#ifdef SIGWINCH
SIGNO_CASE(SIGWINCH);
#endif
#ifdef SIGIO
SIGNO_CASE(SIGIO);
#endif
#ifdef SIGPOLL
# if SIGPOLL != SIGIO
SIGNO_CASE(SIGPOLL);
# endif
#endif
#ifdef SIGLOST
SIGNO_CASE(SIGLOST);
#endif
#ifdef SIGPWR
# if SIGPWR != SIGLOST
SIGNO_CASE(SIGPWR);
# endif
#endif
#ifdef SIGSYS
SIGNO_CASE(SIGSYS);
#endif
default: return "";