/*
* Many operating systems allow signals to be sent to running
* processes. Some signals have a defined effect on the process, while
* others may be trapped at the code level and acted upon. For
* example, your process may trap the USR1 signal and use it to toggle
* debugging, and may use TERM to initiate a controlled shutdown.
*
* pid = fork do
* Signal.trap("USR1") do
* $debug = !$debug
* puts "Debug now: #$debug"
* end
* Signal.trap("TERM") do
* puts "Terminating..."
* shutdown()
* end
* # . . . do some work . . .
* end
*
* Process.detach(pid)
*
* # Controlling program:
* Process.kill("USR1", pid)
* # ...
* Process.kill("USR1", pid)
* # ...
* Process.kill("TERM", pid)
*
* produces:
* Debug now: true
* Debug now: false
* Terminating...
*
* The list of available signal names and their interpretation is
* system dependent. Signal delivery semantics may also vary between
* systems; in particular signal delivery may not always be reliable.
*/
void
Init_signal(void)
{
VALUE mSignal = rb_define_module("Signal");
rb_define_global_function("trap", sig_trap, -1);
rb_define_module_function(mSignal, "trap", sig_trap, -1);
rb_define_module_function(mSignal, "list", sig_list, 0);
rb_define_method(rb_eSignal, "initialize", esignal_init, -1);
rb_define_method(rb_eSignal, "signo", esignal_signo, 0);
rb_alias(rb_eSignal, rb_intern("signm"), rb_intern("message"));
rb_define_method(rb_eInterrupt, "initialize", interrupt_init, -1);
install_sighandler(SIGINT, sighandler);
#ifdef SIGHUP
install_sighandler(SIGHUP, sighandler);
#endif
#ifdef SIGQUIT
install_sighandler(SIGQUIT, sighandler);
#endif
#ifdef SIGTERM
install_sighandler(SIGTERM, sighandler);
#endif
#ifdef SIGALRM
install_sighandler(SIGALRM, sighandler);
#endif
#ifdef SIGUSR1
install_sighandler(SIGUSR1, sighandler);
#endif
#ifdef SIGUSR2
install_sighandler(SIGUSR2, sighandler);
#endif
#ifdef RUBY_DEBUG_ENV
if (!ruby_enable_coredump)
#endif
{
#ifdef SIGBUS
install_sighandler(SIGBUS, sigbus);
#endif
#ifdef SIGSEGV
# ifdef USE_SIGALTSTACK
rb_register_sigaltstack(GET_THREAD());
# endif
install_sighandler(SIGSEGV, (sighandler_t)sigsegv);
#endif
}
#ifdef SIGPIPE
install_sighandler(SIGPIPE, sigpipe);
#endif
#if defined(SIGCLD)
init_sigchld(SIGCLD);
#elif defined(SIGCHLD)
init_sigchld(SIGCHLD);
#endif
}
/*
* Many operating systems allow signals to be sent to running
* processes. Some signals have a defined effect on the process, while
* others may be trapped at the code level and acted upon. For
* example, your process may trap the USR1 signal and use it to toggle
* debugging, and may use TERM to initiate a controlled shutdown.
*
* pid = fork do
* Signal.trap("USR1") do
* $debug = !$debug
* puts "Debug now: #$debug"
* end
* Signal.trap("TERM") do
* puts "Terminating..."
* shutdown()
* end
* # . . . do some work . . .
* end
*
* Process.detach(pid)
*
* # Controlling program:
* Process.kill("USR1", pid)
* # ...
* Process.kill("USR1", pid)
* # ...
* Process.kill("TERM", pid)
*
* produces:
* Debug now: true
* Debug now: false
* Terminating...
*
* The list of available signal names and their interpretation is
* system dependent. Signal delivery semantics may also vary between
* systems; in particular signal delivery may not always be reliable.
*/
void
Init_signal(void)
{
#ifndef MACOS_UNUSE_SIGNAL
VALUE mSignal = rb_define_module("Signal");
rb_define_global_function("trap", sig_trap, -1);
rb_define_module_function(mSignal, "trap", sig_trap, -1);
rb_define_module_function(mSignal, "list", sig_list, 0);
rb_define_method(rb_eSignal, "initialize", esignal_init, -1);
rb_attr(rb_eSignal, rb_intern("signo"), 1, 0, 0);
rb_alias(rb_eSignal, rb_intern("signm"), rb_intern("message"));
rb_define_method(rb_eInterrupt, "initialize", interrupt_init, -1);
install_sighandler(SIGINT, sighandler);
#ifdef SIGHUP
install_sighandler(SIGHUP, sighandler);
#endif
#ifdef SIGQUIT
install_sighandler(SIGQUIT, sighandler);
#endif
#ifdef SIGTERM
install_sighandler(SIGTERM, sighandler);
#endif
#ifdef SIGALRM
install_sighandler(SIGALRM, sighandler);
#endif
#ifdef SIGUSR1
install_sighandler(SIGUSR1, sighandler);
#endif
#ifdef SIGUSR2
install_sighandler(SIGUSR2, sighandler);
#endif
#ifdef RUBY_DEBUG_ENV
if (!ruby_enable_coredump)
#endif
{
#ifdef SIGBUS
install_sighandler(SIGBUS, sigbus);
#endif
#ifdef SIGSEGV
install_sighandler(SIGSEGV, sigsegv);
#endif
}
#ifdef SIGPIPE
install_sighandler(SIGPIPE, sigpipe);
#endif
#if defined(SIGCLD)
init_sigchld(SIGCLD);
#elif defined(SIGCHLD)
init_sigchld(SIGCHLD);
#endif
#endif /* MACOS_UNUSE_SIGNAL */
}
/*
* Many operating systems allow signals to be sent to running
* processes. Some signals have a defined effect on the process, while
* others may be trapped at the code level and acted upon. For
* example, your process may trap the USR1 signal and use it to toggle
* debugging, and may use TERM to initiate a controlled shutdown.
*
* pid = fork do
* Signal.trap("USR1") do
* $debug = !$debug
* puts "Debug now: #$debug"
* end
* Signal.trap("TERM") do
* puts "Terminating..."
* shutdown()
* end
* # . . . do some work . . .
* end
*
* Process.detach(pid)
*
* # Controlling program:
* Process.kill("USR1", pid)
* # ...
* Process.kill("USR1", pid)
* # ...
* Process.kill("TERM", pid)
*
* produces:
* Debug now: true
* Debug now: false
* Terminating...
*
* The list of available signal names and their interpretation is
* system dependent. Signal delivery semantics may also vary between
* systems; in particular signal delivery may not always be reliable.
*/
void
Init_signal(void)
{
#ifndef MACOS_UNUSE_SIGNAL
VALUE mSignal = rb_define_module("Signal");
rb_define_global_function("trap", sig_trap, -1);
rb_define_module_function(mSignal, "trap", sig_trap, -1);
rb_define_module_function(mSignal, "list", sig_list, 0);
install_sighandler(SIGINT, sighandler);
#ifdef SIGHUP
install_sighandler(SIGHUP, sighandler);
#endif
#ifdef SIGQUIT
install_sighandler(SIGQUIT, sighandler);
#endif
#ifdef SIGTERM
install_sighandler(SIGTERM, sighandler);
#endif
#ifdef SIGALRM
install_sighandler(SIGALRM, sighandler);
#endif
#ifdef SIGUSR1
install_sighandler(SIGUSR1, sighandler);
#endif
#ifdef SIGUSR2
install_sighandler(SIGUSR2, sighandler);
#endif
#ifdef SIGBUS
install_sighandler(SIGBUS, sigbus);
#endif
#ifdef SIGSEGV
install_sighandler(SIGSEGV, sigsegv);
#endif
#ifdef SIGPIPE
install_sighandler(SIGPIPE, sigpipe);
#endif
#if defined(SIGCLD)
init_sigchld(SIGCLD);
#elif defined(SIGCHLD)
init_sigchld(SIGCHLD);
#endif
#endif /* MACOS_UNUSE_SIGNAL */
}
/*
* Many operating systems allow signals to be sent to running
* processes. Some signals have a defined effect on the process, while
* others may be trapped at the code level and acted upon. For
* example, your process may trap the USR1 signal and use it to toggle
* debugging, and may use TERM to initiate a controlled shutdown.
*
* pid = fork do
* Signal.trap("USR1") do
* $debug = !$debug
* puts "Debug now: #$debug"
* end
* Signal.trap("TERM") do
* puts "Terminating..."
* shutdown()
* end
* # . . . do some work . . .
* end
*
* Process.detach(pid)
*
* # Controlling program:
* Process.kill("USR1", pid)
* # ...
* Process.kill("USR1", pid)
* # ...
* Process.kill("TERM", pid)
*
* produces:
* Debug now: true
* Debug now: false
* Terminating...
*
* The list of available signal names and their interpretation is
* system dependent. Signal delivery semantics may also vary between
* systems; in particular signal delivery may not always be reliable.
*/
void
Init_signal(void)
{
#ifndef MACOS_UNUSE_SIGNAL
VALUE mSignal = rb_define_module("Signal");
rb_objc_define_module_function(rb_mKernel, "trap", sig_trap, -1);
rb_objc_define_method(*(VALUE *)mSignal, "trap", sig_trap, -1);
rb_objc_define_method(*(VALUE *)mSignal, "list", sig_list, 0);
rb_objc_define_method(rb_eSignal, "initialize", esignal_init, -1);
rb_objc_define_method(rb_eSignal, "signo", esignal_signo, 0);
rb_alias(rb_eSignal, rb_intern("signm"), rb_intern("message"));
rb_objc_define_method(rb_eInterrupt, "initialize", interrupt_init, -1);
/* install_sighandler(SIGINT, sighandler); */
/* install_sighandler(SIGHUP, sighandler); */
/* install_sighandler(SIGQUIT, sighandler); */
/* install_sighandler(SIGTERM, sighandler); */
/* install_sighandler(SIGALRM, sighandler); */
/* install_sighandler(SIGUSR1, sighandler); */
/* install_sighandler(SIGUSR2, sighandler); */
#ifdef RUBY_DEBUG_ENV
if (!ruby_enable_coredump)
#endif
install_sighandler(SIGPIPE, sigpipe);
init_sigchld(SIGCHLD);
#endif /* !MACOS_UNUSE_SIGNAL */
}
int
main (int argc, char *argv[])
{
GError *error = NULL;
int exit_code = EXIT_FAILURE;
/* We had LC_CTYPE before, LC_ALL includs LC_TYPE as well */
(void) setlocale (LC_ALL, "");
(void) bindtextdomain ("mc", LOCALEDIR);
(void) textdomain ("mc");
/* do this before args parsing */
str_init_strings (NULL);
if (!mc_args_parse (&argc, &argv, "mc", &error))
{
startup_exit_falure:
fprintf (stderr, _("Failed to run:\n%s\n"), error->message);
g_error_free (error);
g_free (shell);
startup_exit_ok:
str_uninit_strings ();
return exit_code;
}
/* do this before mc_args_show_info () to view paths in the --datadir-info output */
OS_Setup ();
if (!g_path_is_absolute (mc_config_get_home_dir ()))
{
error = g_error_new (MC_ERROR, 0, "%s: %s", _("Home directory path is not absolute"),
mc_config_get_home_dir ());
mc_event_deinit (NULL);
goto startup_exit_falure;
}
if (!mc_args_show_info ())
{
exit_code = EXIT_SUCCESS;
goto startup_exit_ok;
}
if (!events_init (&error))
goto startup_exit_falure;
mc_config_init_config_paths (&error);
if (error == NULL && mc_config_deprecated_dir_present ())
mc_config_migrate_from_old_place (&error);
if (error != NULL)
{
mc_event_deinit (NULL);
goto startup_exit_falure;
}
vfs_init ();
vfs_plugins_init ();
vfs_setup_work_dir ();
/* do this after vfs initialization due to mc_setctl() call in mc_setup_by_args() */
if (!mc_setup_by_args (argc, argv, &error))
{
vfs_shut ();
mc_event_deinit (NULL);
goto startup_exit_falure;
}
/* check terminal type
* $TEMR must be set and not empty
* mc_global.tty.xterm_flag is used in init_key() and tty_init()
* Do this after mc_args_handle() where mc_args__force_xterm is set up.
*/
mc_global.tty.xterm_flag = tty_check_term (mc_args__force_xterm);
/* NOTE: This has to be called before tty_init or whatever routine
calls any define_sequence */
init_key ();
/* Must be done before installing the SIGCHLD handler [[FIXME]] */
handle_console (CONSOLE_INIT);
#ifdef HAVE_SUBSHELL_SUPPORT
/* Don't use subshell when invoked as viewer or editor */
if (mc_global.mc_run_mode != MC_RUN_FULL)
mc_global.tty.use_subshell = FALSE;
if (mc_global.tty.use_subshell)
subshell_get_console_attributes ();
#endif /* HAVE_SUBSHELL_SUPPORT */
/* Install the SIGCHLD handler; must be done before init_subshell() */
init_sigchld ();
/* We need this, since ncurses endwin () doesn't restore the signals */
save_stop_handler ();
/* Must be done before init_subshell, to set up the terminal size: */
/* FIXME: Should be removed and LINES and COLS computed on subshell */
tty_init (!mc_args__nomouse, mc_global.tty.xterm_flag);
load_setup ();
/* start check mc_global.display_codepage and mc_global.source_codepage */
check_codeset ();
/* Removing this from the X code let's us type C-c */
load_key_defs ();
load_keymap_defs (!mc_args__nokeymap);
macros_list = g_array_new (TRUE, FALSE, sizeof (macros_t));
tty_init_colors (mc_global.tty.disable_colors, mc_args__force_colors);
mc_skin_init (&error);
if (error != NULL)
{
message (D_ERROR, _("Warning"), "%s", error->message);
g_error_free (error);
error = NULL;
}
mc_filehighlight = mc_fhl_new (TRUE);
dlg_set_default_colors ();
#ifdef HAVE_SUBSHELL_SUPPORT
/* Done here to ensure that the subshell doesn't */
/* inherit the file descriptors opened below, etc */
if (mc_global.tty.use_subshell)
init_subshell ();
#endif /* HAVE_SUBSHELL_SUPPORT */
/* Also done after init_subshell, to save any shell init file messages */
if (mc_global.tty.console_flag != '\0')
handle_console (CONSOLE_SAVE);
if (mc_global.tty.alternate_plus_minus)
application_keypad_mode ();
#ifdef HAVE_SUBSHELL_SUPPORT
if (mc_global.tty.use_subshell)
{
mc_prompt = strip_ctrl_codes (subshell_prompt);
if (mc_prompt == NULL)
mc_prompt = (geteuid () == 0) ? "# " : "$ ";
}
else
#endif /* HAVE_SUBSHELL_SUPPORT */
mc_prompt = (geteuid () == 0) ? "# " : "$ ";
/* Program main loop */
if (mc_global.midnight_shutdown)
exit_code = EXIT_SUCCESS;
else
exit_code = do_nc ()? EXIT_SUCCESS : EXIT_FAILURE;
/* Save the tree store */
(void) tree_store_save ();
free_keymap_defs ();
/* Virtual File System shutdown */
vfs_shut ();
flush_extension_file (); /* does only free memory */
mc_fhl_free (&mc_filehighlight);
mc_skin_deinit ();
tty_colors_done ();
tty_shutdown ();
done_setup ();
if (mc_global.tty.console_flag != '\0' && (quit & SUBSHELL_EXIT) == 0)
handle_console (CONSOLE_RESTORE);
if (mc_global.tty.alternate_plus_minus)
numeric_keypad_mode ();
(void) signal (SIGCHLD, SIG_DFL); /* Disable the SIGCHLD handler */
if (mc_global.tty.console_flag != '\0')
handle_console (CONSOLE_DONE);
if (mc_global.mc_run_mode == MC_RUN_FULL && mc_args__last_wd_file != NULL
&& last_wd_string != NULL && !print_last_revert)
{
int last_wd_fd;
last_wd_fd = open (mc_args__last_wd_file, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL,
S_IRUSR | S_IWUSR);
if (last_wd_fd != -1)
{
ssize_t ret1;
int ret2;
ret1 = write (last_wd_fd, last_wd_string, strlen (last_wd_string));
ret2 = close (last_wd_fd);
}
}
g_free (last_wd_string);
g_free (shell);
done_key ();
if (macros_list != NULL)
{
guint i;
macros_t *macros;
for (i = 0; i < macros_list->len; i++)
{
macros = &g_array_index (macros_list, struct macros_t, i);
if (macros != NULL && macros->macro != NULL)
(void) g_array_free (macros->macro, FALSE);
}
(void) g_array_free (macros_list, TRUE);
}
rktio_process_result_t *rktio_process(rktio_t *rktio,
const char *command, int argc, rktio_const_string_t *argv,
rktio_fd_t *stdout_fd, rktio_fd_t *stdin_fd, rktio_fd_t *stderr_fd,
rktio_process_t *group_proc,
const char *current_directory, rktio_envvars_t *envvars,
int flags)
{
rktio_process_result_t *result;
intptr_t to_subprocess[2], from_subprocess[2], err_subprocess[2];
int pid;
#if defined(RKTIO_SYSTEM_UNIX)
# if !defined(CENTRALIZED_SIGCHILD)
System_Child *sc;
# endif
#else
void *sc = 0;
#endif
void *env;
rktio_process_t *subproc;
#if defined(RKTIO_SYSTEM_WINDOWS)
intptr_t spawn_status;
#endif
int new_process_group = (flags & RKTIO_PROCESS_NEW_GROUP);
int stderr_is_stdout = (flags & RKTIO_PROCESS_STDOUT_AS_STDERR);
#if defined(RKTIO_SYSTEM_WINDOWS)
int windows_exact_cmdline = (flags & RKTIO_PROCESS_WINDOWS_EXACT_CMDLINE);
int windows_chain_termination_to_child = (flags & RKTIO_PROCESS_WINDOWS_CHAIN_TERMINATION);
int i;
#endif
/* avoid compiler warnings: */
to_subprocess[0] = -1;
to_subprocess[1] = -1;
from_subprocess[0] = -1;
from_subprocess[1] = -1;
err_subprocess[0] = -1;
err_subprocess[1] = -1;
/*--------------------------------------*/
/* Create needed pipes */
/*--------------------------------------*/
if (stdout_fd) {
from_subprocess[1] = rktio_fd_system_fd(rktio, stdout_fd);
RKTIO_COPY_FOR_SUBPROCESS(from_subprocess, 1);
} else if (rktio_make_os_pipe(rktio, from_subprocess, RKTIO_NO_INHERIT_INPUT)) {
return NULL;
}
if (stdin_fd) {
to_subprocess[0] = rktio_fd_system_fd(rktio, stdin_fd);
RKTIO_COPY_FOR_SUBPROCESS(to_subprocess, 0);
} else if (rktio_make_os_pipe(rktio, to_subprocess, RKTIO_NO_INHERIT_OUTPUT)) {
if (stdout_fd) { RKTIO_CLOSE_SUBPROCESS_COPY(from_subprocess, 1); }
return NULL;
}
if (stderr_fd) {
err_subprocess[1] = rktio_fd_system_fd(rktio, stderr_fd);
RKTIO_COPY_FOR_SUBPROCESS(err_subprocess, 1);
} else if (stderr_is_stdout) {
err_subprocess[0] = from_subprocess[0];
err_subprocess[1] = from_subprocess[1];
} else if (rktio_make_os_pipe(rktio, err_subprocess, RKTIO_NO_INHERIT_INPUT)) {
if (stdout_fd) { RKTIO_CLOSE_SUBPROCESS_COPY(from_subprocess, 1); }
if (stdin_fd) { RKTIO_CLOSE_SUBPROCESS_COPY(to_subprocess, 0); }
return NULL;
}
if (envvars)
env = rktio_envvars_to_block(rktio, envvars);
else
env = NULL;
#if defined(RKTIO_SYSTEM_WINDOWS)
/*--------------------------------------*/
/* Execute: Windows */
/*--------------------------------------*/
/* Windows: quasi-stdin is locked, and we'll say it doesn't matter */
fflush(stdin);
fflush(stdout);
fflush(stderr);
{
char **new_argv;
if (!windows_exact_cmdline) {
/* protect spaces, etc. in the arguments: */
new_argv = malloc(sizeof(char *) * argc);
for (i = 0; i < argc; i++) {
new_argv[i] = cmdline_protect(argv[i]);
}
argv = new_argv;
}
pid = 0;
spawn_status = do_spawnv(rktio,
command, argc, (const char * const *)argv,
windows_exact_cmdline,
to_subprocess[0],
from_subprocess[1],
err_subprocess[1],
&pid,
new_process_group,
windows_chain_termination_to_child,
env, current_directory);
if (!windows_exact_cmdline) {
for (i = 0; i < argc; i++) {
free(argv[i]);
}
free(argv);
}
if (spawn_status != -1)
sc = (void *)spawn_status;
}
#else
/*--------------------------------------*/
/* Execute: Unix */
/*--------------------------------------*/
{
#if defined(CENTRALIZED_SIGCHILD)
centralized_starting_child();
#else
sc = malloc(sizeof(System_Child));
sc->id = 0;
sc->done = 0;
block_child_signals(rktio, 1);
/* Relies on signals blocked: */
init_sigchld(rktio);
#endif
#if defined(__QNX__)
pid = vfork();
#elif defined(SUBPROCESS_USE_FORK1)
pid = fork1();
#else
pid = fork();
#endif
if (pid > 0) {
/* This is the original process, which needs to manage the
newly created child process. */
if (new_process_group || group_proc) {
/* there's a race condition between this use and the exec(),
and there's a race condition between the other setpgid() in
the child processand sending signals from the parent
process; so, we set in both, and at least one will
succeed; we could perform better error checking, since
EACCES is the only expected error */
int pgid = pid;
if (group_proc)
pgid = group_proc->pid;
setpgid(pid, pgid); /* note: silent failure */
}
#if defined(CENTRALIZED_SIGCHILD)
{
rktio_signal_handle_t *signal_fd;
int status;
signal_fd = rktio_get_signal_handle(rktio);
centralized_register_child(pid, new_process_group || group_proc, signal_fd, &status);
/* printf("SUBPROCESS %i\n", pid); */
}
#else
sc->next = rktio->system_children;
rktio->system_children = sc;
sc->id = pid;
#endif
} else if (!pid) {
/* This is the new child process */
if (new_process_group || group_proc) {
/* see also setpgid above */
int actual_pid = getpid();
int pgid = actual_pid;
if (group_proc)
pgid = group_proc->pid;
setpgid(actual_pid, pgid); /* note: silent failure */
}
} else {
get_posix_error();
}
#if !defined(CENTRALIZED_SIGCHILD)
block_child_signals(rktio, 0);
#else
if (!pid)
centralized_unblock_child_signal();
else if (pid == -1)
centralized_ended_child();
#endif
}
switch (pid)
{
case -1:
/* Close all created descriptors */
if (!stdin_fd) {
rktio_reliably_close(to_subprocess[0]);
rktio_reliably_close(to_subprocess[1]);
} else {
RKTIO_CLOSE_SUBPROCESS_COPY(to_subprocess, 0);
}
if (!stdout_fd) {
rktio_reliably_close(from_subprocess[0]);
rktio_reliably_close(from_subprocess[1]);
} else {
RKTIO_CLOSE_SUBPROCESS_COPY(from_subprocess, 1);
}
if (!stderr_fd) {
if (!stderr_is_stdout) {
rktio_reliably_close(err_subprocess[0]);
rktio_reliably_close(err_subprocess[1]);
}
} else {
RKTIO_CLOSE_SUBPROCESS_COPY(err_subprocess, 1);
}
return NULL;
case 0: /* child */
{
int errid;
/* Copy pipe descriptors to stdin and stdout */
do {
errid = MSC_IZE(dup2)(to_subprocess[0], 0);
} while (errid == -1 && errno == EINTR);
do {
errid = MSC_IZE(dup2)(from_subprocess[1], 1);
} while (errid == -1 && errno == EINTR);
do {
errid = MSC_IZE(dup2)(err_subprocess[1], 2);
} while (errid == -1 && errno == EINTR);
/* Close unwanted descriptors */
if (!stdin_fd) {
rktio_reliably_close(to_subprocess[0]);
rktio_reliably_close(to_subprocess[1]);
}
if (!stdout_fd) {
rktio_reliably_close(from_subprocess[0]);
rktio_reliably_close(from_subprocess[1]);
}
if (!stderr_fd) {
if (!stderr_is_stdout) {
rktio_reliably_close(err_subprocess[0]);
rktio_reliably_close(err_subprocess[1]);
}
}
rktio_close_fds_after_fork(0, 1, 2);
}
/* Set real CWD: */
if (!rktio_set_current_directory(rktio, current_directory)) {
fprintf(stderr, "racket: chdir failed to: %s\n", current_directory);
_exit(1);
}
/* Exec new process */
{
int err, i;
rktio_const_string_t *new_argv;
/* add a NULL terminator */
new_argv = malloc(sizeof(char *) * (argc + 1));
for (i = 0; i < argc; i++) {
new_argv[i] = argv[i];
}
new_argv[i] = NULL;
if (!env)
env = rktio_get_environ_array();
err = MSC_IZE(execve)(command, (char **)new_argv, (char **)env);
if (err)
err = errno;
if (envvars)
free(env);
/* If we get here it failed; give up */
fprintf(stderr, "exec failed (%s%serrno=%d)\n",
strerror(err), "; ",
err);
_exit(1);
}
default: /* parent */
break;
}
#endif
/*--------------------------------------*/
/* Close unneeded descriptors */
/*--------------------------------------*/
free(env);
if (!stdin_fd)
RKTIO_CLOSE(to_subprocess[0]);
else
RKTIO_CLOSE_SUBPROCESS_COPY(to_subprocess, 0);
if (!stdout_fd)
RKTIO_CLOSE(from_subprocess[1]);
else
RKTIO_CLOSE_SUBPROCESS_COPY(from_subprocess, 1);
if (!stderr_fd) {
if (!stderr_is_stdout)
RKTIO_CLOSE(err_subprocess[1]);
} else
RKTIO_CLOSE_SUBPROCESS_COPY(err_subprocess, 1);
/*--------------------------------------*/
/* Create new file-descriptor objects */
/*--------------------------------------*/
result = malloc(sizeof(rktio_process_result_t));
if (!stdout_fd)
result->stdout_fd = rktio_system_fd(rktio, from_subprocess[0], RKTIO_OPEN_READ);
else
result->stdout_fd = NULL;
if (!stdin_fd)
result->stdin_fd = rktio_system_fd(rktio, to_subprocess[1], RKTIO_OPEN_WRITE);
else
result->stdin_fd = NULL;
if (!stderr_fd && !stderr_is_stdout)
result->stderr_fd = rktio_system_fd(rktio, err_subprocess[0], RKTIO_OPEN_READ);
else
result->stderr_fd = NULL;
/*--------------------------------------*/
/* Return result info */
/*--------------------------------------*/
subproc = malloc(sizeof(rktio_process_t));
memset(subproc, 0, sizeof(rktio_process_t));
#if !defined(CENTRALIZED_SIGCHILD)
subproc->handle = (void *)sc;
#endif
subproc->pid = pid;
subproc->is_group = new_process_group;
subproc->in_group = (new_process_group || group_proc);
result->process = subproc;
return result;
}
int
main (int argc, char *argv[])
{
GError *mcerror = NULL;
gboolean config_migrated = FALSE;
char *config_migrate_msg;
int exit_code = EXIT_FAILURE;
mc_global.timer = mc_timer_new ();
/* We had LC_CTYPE before, LC_ALL includs LC_TYPE as well */
#ifdef HAVE_SETLOCALE
(void) setlocale (LC_ALL, "");
#endif
(void) bindtextdomain (PACKAGE, LOCALEDIR);
(void) textdomain (PACKAGE);
/* do this before args parsing */
str_init_strings (NULL);
if (!mc_args_parse (&argc, &argv, "mc", &mcerror))
{
startup_exit_falure:
fprintf (stderr, _("Failed to run:\n%s\n"), mcerror->message);
g_error_free (mcerror);
g_free (mc_global.tty.shell);
startup_exit_ok:
str_uninit_strings ();
mc_timer_destroy (mc_global.timer);
return exit_code;
}
/* do this before mc_args_show_info () to view paths in the --datadir-info output */
OS_Setup ();
if (!g_path_is_absolute (mc_config_get_home_dir ()))
{
mc_propagate_error (&mcerror, 0, "%s: %s", _("Home directory path is not absolute"),
mc_config_get_home_dir ());
mc_event_deinit (NULL);
goto startup_exit_falure;
}
if (!mc_args_show_info ())
{
exit_code = EXIT_SUCCESS;
goto startup_exit_ok;
}
if (!events_init (&mcerror))
goto startup_exit_falure;
mc_config_init_config_paths (&mcerror);
config_migrated = mc_config_migrate_from_old_place (&mcerror, &config_migrate_msg);
if (mcerror != NULL)
{
mc_event_deinit (NULL);
goto startup_exit_falure;
}
vfs_init ();
vfs_plugins_init ();
load_setup ();
/* Must be done after load_setup because depends on mc_global.vfs.cd_symlinks */
vfs_setup_work_dir ();
/* Resolve the other_dir panel option. Must be done after vfs_setup_work_dir */
{
char *buffer;
vfs_path_t *vpath;
buffer = mc_config_get_string (mc_panels_config, "Dirs", "other_dir", ".");
vpath = vfs_path_from_str (buffer);
if (vfs_file_is_local (vpath))
saved_other_dir = buffer;
else
g_free (buffer);
vfs_path_free (vpath);
}
/* Set up temporary directory after VFS initialization */
mc_tmpdir ();
/* do this after vfs initialization and vfs working directory setup
due to mc_setctl() and mcedit_arg_vpath_new() calls in mc_setup_by_args() */
if (!mc_setup_by_args (argc, argv, &mcerror))
{
vfs_shut ();
done_setup ();
g_free (saved_other_dir);
mc_event_deinit (NULL);
goto startup_exit_falure;
}
/* check terminal type
* $TEMR must be set and not empty
* mc_global.tty.xterm_flag is used in init_key() and tty_init()
* Do this after mc_args_handle() where mc_args__force_xterm is set up.
*/
mc_global.tty.xterm_flag = tty_check_term (mc_args__force_xterm);
/* NOTE: This has to be called before tty_init or whatever routine
calls any define_sequence */
init_key ();
/* Must be done before installing the SIGCHLD handler [[FIXME]] */
handle_console (CONSOLE_INIT);
#ifdef ENABLE_SUBSHELL
/* Don't use subshell when invoked as viewer or editor */
if (mc_global.mc_run_mode != MC_RUN_FULL)
mc_global.tty.use_subshell = FALSE;
if (mc_global.tty.use_subshell)
subshell_get_console_attributes ();
#endif /* ENABLE_SUBSHELL */
/* Install the SIGCHLD handler; must be done before init_subshell() */
init_sigchld ();
/* We need this, since ncurses endwin () doesn't restore the signals */
save_stop_handler ();
/* Must be done before init_subshell, to set up the terminal size: */
/* FIXME: Should be removed and LINES and COLS computed on subshell */
tty_init (!mc_args__nomouse, mc_global.tty.xterm_flag);
/* start check mc_global.display_codepage and mc_global.source_codepage */
check_codeset ();
/* Removing this from the X code let's us type C-c */
load_key_defs ();
load_keymap_defs (!mc_args__nokeymap);
macros_list = g_array_new (TRUE, FALSE, sizeof (macros_t));
tty_init_colors (mc_global.tty.disable_colors, mc_args__force_colors);
mc_skin_init (NULL, &mcerror);
dlg_set_default_colors ();
input_set_default_colors ();
if (mc_global.mc_run_mode == MC_RUN_FULL)
command_set_default_colors ();
mc_error_message (&mcerror);
#ifdef ENABLE_SUBSHELL
/* Done here to ensure that the subshell doesn't */
/* inherit the file descriptors opened below, etc */
if (mc_global.tty.use_subshell)
init_subshell ();
#endif /* ENABLE_SUBSHELL */
/* Also done after init_subshell, to save any shell init file messages */
if (mc_global.tty.console_flag != '\0')
handle_console (CONSOLE_SAVE);
if (mc_global.tty.alternate_plus_minus)
application_keypad_mode ();
/* Done after subshell initialization to allow select and paste text by mouse
w/o Shift button in subshell in the native console */
init_mouse ();
/* Done after do_enter_ca_mode (tty_init) because in VTE bracketed mode is
separate for the normal and alternate screens */
enable_bracketed_paste ();
/* subshell_prompt is NULL here */
mc_prompt = (geteuid () == 0) ? "# " : "$ ";
if (config_migrated)
{
message (D_ERROR, _("Warning"), "%s", config_migrate_msg);
g_free (config_migrate_msg);
}
/* Program main loop */
if (mc_global.midnight_shutdown)
exit_code = EXIT_SUCCESS;
else
exit_code = do_nc ()? EXIT_SUCCESS : EXIT_FAILURE;
/* Save the tree store */
(void) tree_store_save ();
free_keymap_defs ();
/* Virtual File System shutdown */
vfs_shut ();
flush_extension_file (); /* does only free memory */
mc_skin_deinit ();
tty_colors_done ();
tty_shutdown ();
done_setup ();
if (mc_global.tty.console_flag != '\0' && (quit & SUBSHELL_EXIT) == 0)
handle_console (CONSOLE_RESTORE);
if (mc_global.tty.alternate_plus_minus)
numeric_keypad_mode ();
(void) signal (SIGCHLD, SIG_DFL); /* Disable the SIGCHLD handler */
if (mc_global.tty.console_flag != '\0')
handle_console (CONSOLE_DONE);
if (mc_global.mc_run_mode == MC_RUN_FULL && mc_args__last_wd_file != NULL
&& last_wd_string != NULL && !print_last_revert)
{
int last_wd_fd;
last_wd_fd = open (mc_args__last_wd_file, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL,
S_IRUSR | S_IWUSR);
if (last_wd_fd != -1)
{
ssize_t ret1;
int ret2;
ret1 = write (last_wd_fd, last_wd_string, strlen (last_wd_string));
ret2 = close (last_wd_fd);
(void) ret1;
(void) ret2;
}
}
g_free (last_wd_string);
g_free (mc_global.tty.shell);
done_key ();
if (macros_list != NULL)
{
guint i;
for (i = 0; i < macros_list->len; i++)
{
macros_t *macros;
macros = &g_array_index (macros_list, struct macros_t, i);
if (macros != NULL && macros->macro != NULL)
(void) g_array_free (macros->macro, FALSE);
}
(void) g_array_free (macros_list, TRUE);
}
/*
* Many operating systems allow signals to be sent to running
* processes. Some signals have a defined effect on the process, while
* others may be trapped at the code level and acted upon. For
* example, your process may trap the USR1 signal and use it to toggle
* debugging, and may use TERM to initiate a controlled shutdown.
*
* pid = fork do
* Signal.trap("USR1") do
* $debug = !$debug
* puts "Debug now: #$debug"
* end
* Signal.trap("TERM") do
* puts "Terminating..."
* shutdown()
* end
* # . . . do some work . . .
* end
*
* Process.detach(pid)
*
* # Controlling program:
* Process.kill("USR1", pid)
* # ...
* Process.kill("USR1", pid)
* # ...
* Process.kill("TERM", pid)
*
* produces:
* Debug now: true
* Debug now: false
* Terminating...
*
* The list of available signal names and their interpretation is
* system dependent. Signal delivery semantics may also vary between
* systems; in particular signal delivery may not always be reliable.
*/
void
Init_signal(void)
{
VALUE mSignal = rb_define_module("Signal");
rb_define_global_function("trap", sig_trap, -1);
rb_define_module_function(mSignal, "trap", sig_trap, -1);
rb_define_module_function(mSignal, "list", sig_list, 0);
rb_define_module_function(mSignal, "signame", sig_signame, 1);
rb_define_method(rb_eSignal, "initialize", esignal_init, -1);
rb_define_method(rb_eSignal, "signo", esignal_signo, 0);
rb_alias(rb_eSignal, rb_intern_const("signm"), rb_intern_const("message"));
rb_define_method(rb_eInterrupt, "initialize", interrupt_init, -1);
/* At this time, there is no subthread. Then sigmask guarantee atomics. */
rb_disable_interrupt();
install_sighandler(SIGINT, sighandler);
#ifdef SIGHUP
install_sighandler(SIGHUP, sighandler);
#endif
#ifdef SIGQUIT
install_sighandler(SIGQUIT, sighandler);
#endif
#ifdef SIGTERM
install_sighandler(SIGTERM, sighandler);
#endif
#ifdef SIGALRM
install_sighandler(SIGALRM, sighandler);
#endif
#ifdef SIGUSR1
install_sighandler(SIGUSR1, sighandler);
#endif
#ifdef SIGUSR2
install_sighandler(SIGUSR2, sighandler);
#endif
if (!ruby_enable_coredump) {
#ifdef SIGBUS
install_sighandler(SIGBUS, (sighandler_t)sigbus);
#endif
#ifdef SIGILL
install_sighandler(SIGILL, (sighandler_t)sigill);
#endif
#ifdef SIGSEGV
# ifdef USE_SIGALTSTACK
rb_register_sigaltstack(GET_THREAD());
# endif
install_sighandler(SIGSEGV, (sighandler_t)sigsegv);
#endif
}
#ifdef SIGPIPE
install_sighandler(SIGPIPE, SIG_IGN);
#endif
#if defined(SIGCLD)
init_sigchld(SIGCLD);
#elif defined(SIGCHLD)
init_sigchld(SIGCHLD);
#endif
rb_enable_interrupt();
}
