int main( int argc, char **argv )
{
struct stat tmp;
int res=1;
const char *cmd=0;
int my_optind=0;
set_main_thread();
setup_fork_guards();
wsetlocale( LC_ALL, L"" );
is_interactive_session=1;
program_name=L"fish";
stat("----------FISH_HIT_MAIN----------", &tmp);
my_optind = fish_parse_opt( argc, argv, &cmd );
/*
No-exec is prohibited when in interactive mode
*/
if( is_interactive_session && no_exec)
{
debug( 1, _(L"Can not use the no-execute mode when running an interactive session") );
no_exec = 0;
}
const struct config_paths_t paths = determine_config_directory_paths(argv[0]);
proc_init();
event_init();
wutil_init();
//parser_init();
builtin_init();
function_init();
env_init(&paths);
reader_init();
history_init();
parser_t &parser = parser_t::principal_parser();
if (g_log_forks)
printf("%d: g_fork_count: %d\n", __LINE__, g_fork_count);
if( read_init(paths) )
{
if( cmd != 0 )
{
wchar_t *cmd_wcs = str2wcs( cmd );
res = parser.eval( cmd_wcs, 0, TOP );
free(cmd_wcs);
reader_exit(0, 0);
}
else
{
if( my_optind == argc )
{
res = reader_read( STDIN_FILENO, 0 );
}
else
{
char **ptr;
char *file = *(argv+(my_optind++));
int i;
int fd;
wchar_t *rel_filename, *abs_filename;
if( ( fd = open(file, O_RDONLY) ) == -1 )
{
wperror( L"open" );
return 1;
}
// OK to not do this atomically since we cannot have gone multithreaded yet
set_cloexec(fd);
if( *(argv+my_optind))
{
wcstring sb;
for( i=1,ptr = argv+my_optind; *ptr; i++, ptr++ )
{
if( i != 1 )
sb.append( ARRAY_SEP_STR );
sb.append( str2wcstring( *ptr ));
}
env_set( L"argv", sb.c_str(), 0 );
}
rel_filename = str2wcs( file );
abs_filename = wrealpath( rel_filename, 0 );
if( !abs_filename )
{
abs_filename = wcsdup(rel_filename);
}
reader_push_current_filename( intern( abs_filename ) );
free( rel_filename );
free( abs_filename );
res = reader_read( fd, 0 );
if( res )
{
debug( 1,
_(L"Error while reading file %ls\n"),
reader_current_filename()?reader_current_filename(): _(L"Standard input") );
}
reader_pop_current_filename();
}
}
}
proc_fire_event( L"PROCESS_EXIT", EVENT_EXIT, getpid(), res );
history_destroy();
proc_destroy();
builtin_destroy();
reader_destroy();
parser.destroy();
wutil_destroy();
event_destroy();
env_destroy();
if (g_log_forks)
printf("%d: g_fork_count: %d\n", __LINE__, g_fork_count);
return res?STATUS_UNKNOWN_COMMAND:proc_get_last_status();
}
int main(int argc, char **argv) {
int res = 1;
int my_optind = 0;
program_name = L"fish";
set_main_thread();
setup_fork_guards();
signal_unblock_all();
setlocale(LC_ALL, "");
fish_setlocale();
// struct stat tmp;
// stat("----------FISH_HIT_MAIN----------", &tmp);
if (!argv[0]) {
static const char *dummy_argv[2] = {"fish", NULL};
argv = (char **)dummy_argv; //!OCLINT(parameter reassignment)
argc = 1; //!OCLINT(parameter reassignment)
}
fish_cmd_opts_t opts;
my_optind = fish_parse_opt(argc, argv, &opts);
// No-exec is prohibited when in interactive mode.
if (is_interactive_session && no_exec) {
debug(1, _(L"Can not use the no-execute mode when running an interactive session"));
no_exec = 0;
}
// Only save (and therefore restore) the fg process group if we are interactive. See issues
// #197 and #1002.
if (is_interactive_session) {
save_term_foreground_process_group();
}
const struct config_paths_t paths = determine_config_directory_paths(argv[0]);
env_init(&paths);
// Set features early in case other initialization depends on them.
// Start with the ones set in the environment, then those set on the command line (so the
// command line takes precedence).
if (auto features_var = env_get(L"fish_features")) {
for (const wcstring &s : features_var->as_list()) {
mutable_fish_features().set_from_string(s);
}
}
mutable_fish_features().set_from_string(opts.features);
proc_init();
builtin_init();
misc_init();
reader_init();
parser_t &parser = parser_t::principal_parser();
const io_chain_t empty_ios;
if (read_init(paths)) {
// Stomp the exit status of any initialization commands (issue #635).
proc_set_last_status(STATUS_CMD_OK);
// Run post-config commands specified as arguments, if any.
if (!opts.postconfig_cmds.empty()) {
res = run_command_list(&opts.postconfig_cmds, empty_ios);
}
if (!opts.batch_cmds.empty()) {
// Run the commands specified as arguments, if any.
if (is_login) {
// Do something nasty to support OpenSUSE assuming we're bash. This may modify cmds.
fish_xdm_login_hack_hack_hack_hack(&opts.batch_cmds, argc - my_optind,
argv + my_optind);
}
res = run_command_list(&opts.batch_cmds, empty_ios);
reader_exit(0, 0);
} else if (my_optind == argc) {
// Implicitly interactive mode.
res = reader_read(STDIN_FILENO, empty_ios);
} else {
char *file = *(argv + (my_optind++));
int fd = open(file, O_RDONLY);
if (fd == -1) {
perror(file);
} else {
// OK to not do this atomically since we cannot have gone multithreaded yet.
set_cloexec(fd);
wcstring_list_t list;
for (char **ptr = argv + my_optind; *ptr; ptr++) {
list.push_back(str2wcstring(*ptr));
}
env_set(L"argv", ENV_DEFAULT, list);
const wcstring rel_filename = str2wcstring(file);
reader_push_current_filename(rel_filename.c_str());
res = reader_read(fd, empty_ios);
if (res) {
debug(1, _(L"Error while reading file %ls\n"),
reader_current_filename() ? reader_current_filename()
: _(L"Standard input"));
}
reader_pop_current_filename();
}
}
}
int exit_status = res ? STATUS_CMD_UNKNOWN : proc_get_last_status();
// TODO: The generic process-exit event is useless and unused.
// Remove this in future.
proc_fire_event(L"PROCESS_EXIT", EVENT_EXIT, getpid(), exit_status);
event_fire_generic(L"fish_exit");
restore_term_mode();
restore_term_foreground_process_group();
if (g_profiling_active) {
parser.emit_profiling(s_profiling_output_filename);
}
history_save_all();
proc_destroy();
exit_without_destructors(exit_status);
return EXIT_FAILURE; // above line should always exit
}
/// Executes an external command.
/// \return true on success, false if there is an exec error.
static bool exec_external_command(job_t *j, process_t *p, const io_chain_t &proc_io_chain) {
assert(p->type == EXTERNAL && "Process is not external");
// Get argv and envv before we fork.
null_terminated_array_t<char> argv_array;
convert_wide_array_to_narrow(p->get_argv_array(), &argv_array);
// Ensure that stdin is blocking before we hand it off (see issue #176). It's a
// little strange that we only do this with stdin and not with stdout or stderr.
// However in practice, setting or clearing O_NONBLOCK on stdin also sets it for the
// other two fds, presumably because they refer to the same underlying file
// (/dev/tty?).
make_fd_blocking(STDIN_FILENO);
const char *const *argv = argv_array.get();
const char *const *envv = env_export_arr();
std::string actual_cmd_str = wcs2string(p->actual_cmd);
const char *actual_cmd = actual_cmd_str.c_str();
const wchar_t *file = reader_current_filename();
#if FISH_USE_POSIX_SPAWN
// Prefer to use posix_spawn, since it's faster on some systems like OS X.
bool use_posix_spawn = g_use_posix_spawn && can_use_posix_spawn_for_job(j, p);
if (use_posix_spawn) {
g_fork_count++; // spawn counts as a fork+exec
// Create posix spawn attributes and actions.
pid_t pid = 0;
posix_spawnattr_t attr = posix_spawnattr_t();
posix_spawn_file_actions_t actions = posix_spawn_file_actions_t();
bool made_it = fork_actions_make_spawn_properties(&attr, &actions, j, p, proc_io_chain);
if (made_it) {
// We successfully made the attributes and actions; actually call
// posix_spawn.
int spawn_ret =
posix_spawn(&pid, actual_cmd, &actions, &attr, const_cast<char *const *>(argv),
const_cast<char *const *>(envv));
// This usleep can be used to test for various race conditions
// (https://github.com/fish-shell/fish-shell/issues/360).
// usleep(10000);
if (spawn_ret != 0) {
safe_report_exec_error(spawn_ret, actual_cmd, argv, envv);
// Make sure our pid isn't set.
pid = 0;
}
// Clean up our actions.
posix_spawn_file_actions_destroy(&actions);
posix_spawnattr_destroy(&attr);
}
// A 0 pid means we failed to posix_spawn. Since we have no pid, we'll never get
// told when it's exited, so we have to mark the process as failed.
debug(4, L"Fork #%d, pid %d: spawn external command '%s' from '%ls'", g_fork_count, pid,
actual_cmd, file ? file : L"<no file>");
if (pid == 0) {
job_mark_process_as_failed(j, p);
return false;
}
// these are all things do_fork() takes care of normally (for forked processes):
p->pid = pid;
on_process_created(j, p->pid);
// We explicitly don't call set_child_group() for spawned processes because that
// a) isn't necessary, and b) causes issues like fish-shell/fish-shell#4715
#if defined(__GLIBC__)
// Unfortunately, using posix_spawn() is not the panacea it would appear to be,
// glibc has a penchant for using fork() instead of vfork() when posix_spawn() is
// called, meaning that atomicity is not guaranteed and we can get here before the
// child group has been set. See discussion here:
// https://github.com/Microsoft/WSL/issues/2997 And confirmation that this persists
// past glibc 2.24+ here: https://github.com/fish-shell/fish-shell/issues/4715
if (j->get_flag(job_flag_t::JOB_CONTROL) && getpgid(p->pid) != j->pgid) {
set_child_group(j, p->pid);
}
#else
// In do_fork, the pid of the child process is used as the group leader if j->pgid
// invalid, posix_spawn assigned the new group a pgid equal to its own id if
// j->pgid was invalid, so this is what we do instead of calling set_child_group
if (j->pgid == INVALID_PID) {
j->pgid = pid;
}
#endif
maybe_assign_terminal(j);
} else
#endif
{
if (!fork_child_for_process(j, p, proc_io_chain, false, "external command",
[&] { safe_launch_process(p, actual_cmd, argv, envv); })) {
return false;
}
}
return true;
}
int main(int argc, char **argv)
{
int res=1;
int my_optind=0;
set_main_thread();
setup_fork_guards();
wsetlocale(LC_ALL, L"");
is_interactive_session=1;
program_name=L"fish";
//struct stat tmp;
//stat("----------FISH_HIT_MAIN----------", &tmp);
std::vector<std::string> cmds;
my_optind = fish_parse_opt(argc, argv, &cmds);
/*
No-exec is prohibited when in interactive mode
*/
if (is_interactive_session && no_exec)
{
debug(1, _(L"Can not use the no-execute mode when running an interactive session"));
no_exec = 0;
}
/* Only save (and therefore restore) the fg process group if we are interactive. See #197, #1002 */
if (is_interactive_session)
{
save_term_foreground_process_group();
}
const struct config_paths_t paths = determine_config_directory_paths(argv[0]);
proc_init();
event_init();
wutil_init();
builtin_init();
function_init();
env_init(&paths);
reader_init();
history_init();
/* For setcolor to support term256 in config.fish (#1022) */
update_fish_term256();
parser_t &parser = parser_t::principal_parser();
if (g_log_forks)
printf("%d: g_fork_count: %d\n", __LINE__, g_fork_count);
const io_chain_t empty_ios;
if (read_init(paths))
{
/* Stop the exit status of any initialization commands (#635) */
proc_set_last_status(STATUS_BUILTIN_OK);
/* Run the commands specified as arguments, if any */
if (! cmds.empty())
{
/* Do something nasty to support OpenSUSE assuming we're bash. This may modify cmds. */
if (is_login)
{
fish_xdm_login_hack_hack_hack_hack(&cmds, argc - my_optind, argv + my_optind);
}
for (size_t i=0; i < cmds.size(); i++)
{
const wcstring cmd_wcs = str2wcstring(cmds.at(i));
res = parser.eval(cmd_wcs, empty_ios, TOP);
}
reader_exit(0, 0);
}
else
{
if (my_optind == argc)
{
res = reader_read(STDIN_FILENO, empty_ios);
}
else
{
char **ptr;
char *file = *(argv+(my_optind++));
int i;
int fd;
if ((fd = open(file, O_RDONLY)) == -1)
{
wperror(L"open");
return 1;
}
// OK to not do this atomically since we cannot have gone multithreaded yet
set_cloexec(fd);
if (*(argv+my_optind))
{
wcstring sb;
for (i=1,ptr = argv+my_optind; *ptr; i++, ptr++)
{
if (i != 1)
sb.append(ARRAY_SEP_STR);
sb.append(str2wcstring(*ptr));
}
env_set(L"argv", sb.c_str(), 0);
}
const wcstring rel_filename = str2wcstring(file);
const wchar_t *abs_filename = wrealpath(rel_filename, NULL);
if (!abs_filename)
{
abs_filename = wcsdup(rel_filename.c_str());
}
reader_push_current_filename(intern(abs_filename));
free((void *)abs_filename);
res = reader_read(fd, empty_ios);
if (res)
{
debug(1,
_(L"Error while reading file %ls\n"),
reader_current_filename()?reader_current_filename(): _(L"Standard input"));
}
reader_pop_current_filename();
}
}
}
proc_fire_event(L"PROCESS_EXIT", EVENT_EXIT, getpid(), res);
restore_term_mode();
restore_term_foreground_process_group();
history_destroy();
proc_destroy();
builtin_destroy();
reader_destroy();
parser.destroy();
wutil_destroy();
event_destroy();
env_destroy();
if (g_log_forks)
printf("%d: g_fork_count: %d\n", __LINE__, g_fork_count);
exit_without_destructors(res ? STATUS_UNKNOWN_COMMAND : proc_get_last_status());
return EXIT_FAILURE; //above line should always exit
}
int main(int argc, char **argv) {
int res = 1;
int my_optind = 0;
program_name = L"fish";
set_main_thread();
setup_fork_guards();
setlocale(LC_ALL, "");
fish_setlocale();
// struct stat tmp;
// stat("----------FISH_HIT_MAIN----------", &tmp);
if (!argv[0]) {
static const char *dummy_argv[2] = {"fish", NULL};
argv = (char **)dummy_argv; //!OCLINT(parameter reassignment)
argc = 1; //!OCLINT(parameter reassignment)
}
std::vector<std::string> cmds;
my_optind = fish_parse_opt(argc, argv, &cmds);
// No-exec is prohibited when in interactive mode.
if (is_interactive_session && no_exec) {
debug(1, _(L"Can not use the no-execute mode when running an interactive session"));
no_exec = 0;
}
// Only save (and therefore restore) the fg process group if we are interactive. See issues
// #197 and #1002.
if (is_interactive_session) {
save_term_foreground_process_group();
}
const struct config_paths_t paths = determine_config_directory_paths(argv[0]);
proc_init();
event_init();
builtin_init();
function_init();
env_init(&paths);
reader_init();
history_init();
// For set_color to support term256 in config.fish (issue #1022).
update_fish_color_support();
misc_init();
parser_t &parser = parser_t::principal_parser();
const io_chain_t empty_ios;
if (read_init(paths)) {
// Stomp the exit status of any initialization commands (issue #635).
proc_set_last_status(STATUS_BUILTIN_OK);
// Run the commands specified as arguments, if any.
if (!cmds.empty()) {
// Do something nasty to support OpenSUSE assuming we're bash. This may modify cmds.
if (is_login) {
fish_xdm_login_hack_hack_hack_hack(&cmds, argc - my_optind, argv + my_optind);
}
for (size_t i = 0; i < cmds.size(); i++) {
const wcstring cmd_wcs = str2wcstring(cmds.at(i));
res = parser.eval(cmd_wcs, empty_ios, TOP);
}
reader_exit(0, 0);
} else if (my_optind == argc) {
// Interactive mode
check_running_fishd();
res = reader_read(STDIN_FILENO, empty_ios);
} else {
char *file = *(argv + (my_optind++));
int fd = open(file, O_RDONLY);
if (fd == -1) {
perror(file);
} else {
// OK to not do this atomically since we cannot have gone multithreaded yet.
set_cloexec(fd);
if (*(argv + my_optind)) {
wcstring sb;
char **ptr;
int i;
for (i = 1, ptr = argv + my_optind; *ptr; i++, ptr++) {
if (i != 1) sb.append(ARRAY_SEP_STR);
sb.append(str2wcstring(*ptr));
}
env_set(L"argv", sb.c_str(), 0);
}
const wcstring rel_filename = str2wcstring(file);
reader_push_current_filename(rel_filename.c_str());
res = reader_read(fd, empty_ios);
if (res) {
debug(1, _(L"Error while reading file %ls\n"), reader_current_filename()
? reader_current_filename()
: _(L"Standard input"));
}
reader_pop_current_filename();
}
}
}
int exit_status = res ? STATUS_UNKNOWN_COMMAND : proc_get_last_status();
proc_fire_event(L"PROCESS_EXIT", EVENT_EXIT, getpid(), exit_status);
restore_term_mode();
restore_term_foreground_process_group();
if (g_profiling_active) {
parser.emit_profiling(s_profiling_output_filename);
}
history_destroy();
proc_destroy();
builtin_destroy();
reader_destroy();
event_destroy();
exit_without_destructors(exit_status);
return EXIT_FAILURE; // above line should always exit
}
