int process_spawn( process_t* proc )
{
static char unescaped[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.:/\\";
int i, num_args;
int size;
#if FOUNDATION_PLATFORM_WINDOWS
wchar_t* wcmdline;
wchar_t* wwd;
char* cmdline = 0;
#endif
if( !proc )
return PROCESS_INVALID_ARGS;
proc->code = PROCESS_INVALID_ARGS;
if( !string_length( proc->path ) )
return proc->code;
//Always escape path on Windows platforms
#if FOUNDATION_PLATFORM_POSIX
if( string_find_first_not_of( proc->path, unescaped, 0 ) != STRING_NPOS )
#endif
{
if( proc->path[0] != '"' )
proc->path = string_prepend( proc->path, "\"" );
if( proc->path[ string_length( proc->path ) - 1 ] != '"' )
proc->path = string_append( proc->path, "\"" );
}
size = array_size( proc->args );
for( i = 0, num_args = 0; i < size; ++i )
{
char* arg = proc->args[i];
if( !string_length( arg ) )
continue;
++num_args;
if( string_find_first_not_of( arg, unescaped, 0 ) != STRING_NPOS )
{
if( arg[0] != '"' )
{
//Check if we need to escape " characters
unsigned int pos = string_find( arg, '"', 0 );
while( pos != STRING_NPOS )
{
if( arg[ pos - 1 ] != '\\' )
{
char* escarg = string_substr( arg, 0, pos );
char* left = string_substr( arg, pos, STRING_NPOS );
escarg = string_append( escarg, "\\" );
escarg = string_append( escarg, left );
string_deallocate( left );
string_deallocate( arg );
arg = escarg;
}
pos = string_find( arg, '"', pos + 2 );
}
arg = string_prepend( arg, "\"" );
arg = string_append( arg, "\"" );
proc->args[i] = arg;
}
}
}
#if FOUNDATION_PLATFORM_WINDOWS
# ifndef SEE_MASK_NOASYNC
# define SEE_MASK_NOASYNC 0x00000100
# endif
if( !( proc->flags & PROCESS_WINDOWS_USE_SHELLEXECUTE ) ) //Don't prepend exe path to parameters if using ShellExecute
cmdline = string_clone( proc->path );
//Build command line string
for( i = 0; i < size; ++i )
{
char* arg = proc->args[i];
if( !string_length( arg ) )
continue;
if( cmdline )
cmdline = string_append( cmdline, " " );
cmdline = string_append( cmdline, arg );
}
if( !string_length( proc->wd ) )
proc->wd = string_clone( environment_current_working_directory() );
wcmdline = wstring_allocate_from_string( cmdline, 0 );
wwd = wstring_allocate_from_string( proc->wd, 0 );
if( proc->flags & PROCESS_WINDOWS_USE_SHELLEXECUTE )
{
SHELLEXECUTEINFOW sei;
wchar_t* wverb;
wchar_t* wpath;
wverb = ( proc->verb && string_length( proc->verb ) ) ? wstring_allocate_from_string( proc->verb, 0 ) : 0;
wpath = wstring_allocate_from_string( proc->path, 0 );
ZeroMemory( &sei, sizeof( sei ) );
sei.cbSize = sizeof(SHELLEXECUTEINFOW);
sei.hwnd = 0;
sei.fMask = SEE_MASK_NOASYNC | SEE_MASK_FLAG_NO_UI | SEE_MASK_NOCLOSEPROCESS;
sei.lpVerb = wverb;
sei.lpFile = wpath;
sei.lpParameters = wcmdline;
sei.lpDirectory = wwd;
sei.nShow = SW_SHOWNORMAL;
if( !( proc->flags & PROCESS_CONSOLE ) )
sei.fMask |= SEE_MASK_NO_CONSOLE;
if( proc->flags & PROCESS_STDSTREAMS )
log_warnf( 0, WARNING_UNSUPPORTED, "Unable to redirect standard in/out through pipes when using ShellExecute for process spawning" );
log_debugf( 0, "Spawn process (ShellExecute): %s %s", proc->path, cmdline );
if( !ShellExecuteExW( &sei ) )
{
log_warnf( 0, WARNING_SYSTEM_CALL_FAIL, "Unable to spawn process (ShellExecute) for executable '%s': %s", proc->path, system_error_message( GetLastError() ) );
}
else
{
proc->hp = sei.hProcess;
proc->ht = 0;
proc->code = 0;
}
wstring_deallocate( wverb );
wstring_deallocate( wpath );
}
else
{
STARTUPINFOW si;
PROCESS_INFORMATION pi;
BOOL inherit_handles = FALSE;
memset( &si, 0, sizeof( si ) );
memset( &pi, 0, sizeof( pi ) );
si.cb = sizeof( si );
if( proc->flags & PROCESS_STDSTREAMS )
{
proc->pipeout = pipe_allocate();
proc->pipein = pipe_allocate();
si.dwFlags |= STARTF_USESTDHANDLES;
si.hStdOutput = pipe_write_handle( proc->pipeout );
si.hStdError = pipe_write_handle( proc->pipeout );
si.hStdInput = pipe_read_handle( proc->pipein );
//Don't inherit wrong ends of pipes
SetHandleInformation( pipe_read_handle( proc->pipeout ), HANDLE_FLAG_INHERIT, 0 );
SetHandleInformation( pipe_write_handle( proc->pipein ), HANDLE_FLAG_INHERIT, 0 );
inherit_handles = TRUE;
}
log_debugf( 0, "Spawn process (CreateProcess): %s %s", proc->path, cmdline );
if( !CreateProcessW( 0/*wpath*/, wcmdline, 0, 0, inherit_handles, ( proc->flags & PROCESS_CONSOLE ) ? CREATE_NEW_CONSOLE : 0, 0, wwd, &si, &pi ) )
{
log_warnf( 0, WARNING_SYSTEM_CALL_FAIL, "Unable to spawn process (CreateProcess) for executable '%s': %s", proc->path, system_error_message( GetLastError() ) );
stream_deallocate( proc->pipeout );
stream_deallocate( proc->pipein );
proc->pipeout = 0;
proc->pipein = 0;
}
else
{
proc->hp = pi.hProcess;
proc->ht = pi.hThread;
proc->code = 0;
}
if( proc->pipeout )
pipe_close_write( proc->pipeout );
if( proc->pipein )
pipe_close_read( proc->pipein );
}
wstring_deallocate( wcmdline );
wstring_deallocate( wwd );
string_deallocate( cmdline );
if( proc->code < 0 )
return proc->code; //Error
#endif
#if FOUNDATION_PLATFORM_MACOSX
if( proc->flags & PROCESS_OSX_USE_OPENAPPLICATION )
{
proc->pid = 0;
LSApplicationParameters params;
ProcessSerialNumber psn;
FSRef* fsref = memory_allocate( 0, sizeof( FSRef ), 0, MEMORY_TEMPORARY | MEMORY_ZERO_INITIALIZED );
memset( ¶ms, 0, sizeof( LSApplicationParameters ) );
memset( &psn, 0, sizeof( ProcessSerialNumber ) );
char* pathstripped = string_strip( string_clone( proc->path ), "\"" );
OSStatus status = 0;
status = FSPathMakeRef( (uint8_t*)pathstripped, fsref, 0 );
if( status < 0 )
{
pathstripped = string_append( pathstripped, ".app" );
status = FSPathMakeRef( (uint8_t*)pathstripped, fsref, 0 );
}
CFStringRef* args = 0;
for( i = 0, size = array_size( proc->args ); i < size; ++i ) //App gets executable path automatically, don't include
array_push( args, CFStringCreateWithCString( 0, proc->args[i], kCFStringEncodingUTF8 ) );
CFArrayRef argvref = CFArrayCreate( 0, (const void**)args, (CFIndex)array_size( args ), 0 );
params.flags = kLSLaunchDefaults;
params.application = fsref;
params.argv = argvref;
log_debugf( 0, "Spawn process (LSOpenApplication): %s", pathstripped );
status = LSOpenApplication( ¶ms, &psn );
if( status != 0 )
{
proc->code = status;
log_warnf( 0, WARNING_BAD_DATA, "Unable to spawn process for executable '%s': %s", proc->path, system_error_message( status ) );
}
CFRelease( argvref );
for( i = 0, size = array_size( args ); i < size; ++i )
CFRelease( args[i] );
memory_deallocate( fsref );
string_deallocate( pathstripped );
if( status == 0 )
{
pid_t pid = 0;
GetProcessPID( &psn, &pid );
proc->pid = pid;
//Always "detached" with LSOpenApplication, not a child process at all
//Setup a kqueue to watch when process terminates so we can emulate a wait
proc->kq = kqueue();
if( proc->kq < 0 )
{
log_warnf( 0, WARNING_SYSTEM_CALL_FAIL, "Unable to create kqueue for process watch: %s (%d)", proc->kq, system_error_message( proc->kq ) );
proc->kq = 0;
}
else
{
struct kevent changes;
EV_SET( &changes, (pid_t)pid, EVFILT_PROC, EV_ADD | EV_RECEIPT, NOTE_EXIT, 0, 0 );
int ret = kevent( proc->kq, &changes, 1, &changes, 1, 0 );
if( ret != 1 )
{
log_warnf( 0, WARNING_SYSTEM_CALL_FAIL, "Unable to setup kqueue for process watch, failed to add event to kqueue (%d)", ret );
close( proc->kq );
proc->kq = 0;
}
}
}
goto exit;
}
#endif
#if FOUNDATION_PLATFORM_POSIX
//Insert executable arg at start and null ptr at end
int argc = array_size( proc->args ) + 1;
array_grow( proc->args, 2 );
for( int arg = argc - 1; arg > 0; --arg )
proc->args[arg] = proc->args[arg-1];
proc->args[0] = string_clone( proc->path );
proc->args[argc] = 0;
if( proc->flags & PROCESS_STDSTREAMS )
{
proc->pipeout = pipe_allocate();
proc->pipein = pipe_allocate();
}
proc->pid = 0;
pid_t pid = fork();
if( pid == 0 )
{
//Child
if( string_length( proc->wd ) )
{
log_debugf( 0, "Spawned child process, setting working directory to %s", proc->wd );
environment_set_current_working_directory( proc->wd );
}
log_debugf( 0, "Child process executing: %s", proc->path );
if( proc->flags & PROCESS_STDSTREAMS )
{
pipe_close_read( proc->pipeout );
dup2( pipe_write_fd( proc->pipeout ), STDOUT_FILENO );
pipe_close_write( proc->pipein );
dup2( pipe_read_fd( proc->pipein ), STDIN_FILENO );
}
int code = execv( proc->path, proc->args );
if( code < 0 ) //Will always be true since this point will never be reached if execve() is successful
log_warnf( 0, WARNING_BAD_DATA, "Child process failed execve() : %s : %s", proc->path, system_error_message( errno ) );
//Error
process_exit( -1 );
}
if( pid > 0 )
{
log_debugf( 0, "Child process forked, pid %d", pid );
proc->pid = pid;
if( proc->pipeout )
pipe_close_write( proc->pipeout );
if( proc->pipein )
pipe_close_read( proc->pipein );
if( proc->flags & PROCESS_DETACHED )
{
int cstatus = 0;
pid_t err = waitpid( pid, &cstatus, WNOHANG );
if( err == 0 )
{
//TODO: Ugly wait to make sure process spawned correctly
thread_sleep( 500 );
err = waitpid( pid, &cstatus, WNOHANG );
}
if( err > 0 )
{
//Process exited, check code
proc->code = (int)((char)WEXITSTATUS( cstatus ));
log_debugf( 0, "Child process returned: %d", proc->code );
return proc->code;
}
}
}
else
{
//Error
proc->code = errno;
log_warnf( 0, WARNING_BAD_DATA, "Unable to spawn process: %s : %s", proc->path, system_error_message( proc->code ) );
if( proc->pipeout )
stream_deallocate( proc->pipeout );
if( proc->pipein )
stream_deallocate( proc->pipein );
proc->pipeout = 0;
proc->pipein = 0;
return proc->code;
}
#endif
#if !FOUNDATION_PLATFORM_WINDOWS && !FOUNDATION_PLATFORM_POSIX
FOUNDATION_ASSERT_FAIL( "Process spawning not supported on platform" );
#endif
#if FOUNDATION_PLATFORM_MACOSX
exit:
#endif
if( proc->flags & PROCESS_DETACHED )
return PROCESS_STILL_ACTIVE;
return process_wait( proc );
}
int
process_spawn(process_t* proc) {
static const string_const_t unescaped = { STRING_CONST("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.:/\\") };
size_t i, num_args;
size_t size;
#if FOUNDATION_PLATFORM_WINDOWS
wchar_t* wcmdline;
wchar_t* wwd;
string_t cmdline;
#endif
#if !FOUNDATION_PLATFORM_POSIX
size_t capacity;
#endif
proc->code = PROCESS_INVALID_ARGS;
if (!proc->path.length)
return proc->code;
//Always escape path on Windows platforms
#if FOUNDATION_PLATFORM_POSIX
if (string_find_first_not_of(STRING_ARGS(proc->path), STRING_ARGS(unescaped), 0) != STRING_NPOS)
#endif
{
bool preesc = (proc->path.str[0] != '"');
bool postesc = (proc->path.str[ proc->path.length - 1 ] != '"');
if (preesc || postesc) {
char* buffer = memory_allocate(HASH_STRING, proc->path.length + 4, 0, MEMORY_PERSISTENT);
string_t pathesc = string_concat_varg(buffer, proc->path.length + 4,
"\"", (size_t)(preesc ? 1 : 0),
STRING_ARGS(proc->path),
"\"", (size_t)(postesc ? 1 : 0),
nullptr);
string_deallocate(proc->path.str);
proc->path = pathesc;
}
}
size = array_size(proc->args);
for (i = 0, num_args = 0; i < size; ++i) {
string_t arg = proc->args[i];
if (!arg.length)
continue;
++num_args;
#if !FOUNDATION_PLATFORM_POSIX
if (string_find_first_not_of(arg.str, arg.length,
unescaped.str, unescaped.length, 0) != STRING_NPOS) {
if (arg.str[0] != '"') {
//Check if we need to escape " characters
string_t escarg;
size_t pos = string_find(arg.str, arg.length, '"', 0);
while (pos != STRING_NPOS) {
if (arg.str[ pos - 1 ] != '\\') {
string_const_t right = string_substr(STRING_ARGS(arg), 0, pos);
string_const_t left = string_substr(STRING_ARGS(arg), pos, STRING_NPOS);
capacity = arg.length + 2;
escarg = string_allocate(0, capacity);
escarg = string_concat(escarg.str, capacity, STRING_ARGS(right), STRING_CONST("\\"));
escarg = string_append(STRING_ARGS(escarg), capacity, STRING_ARGS(left));
string_deallocate(arg.str);
arg = escarg;
}
pos = string_find(STRING_ARGS(arg), '"', pos + 2);
}
escarg = string_allocate_concat_varg(STRING_CONST("\""), STRING_ARGS(arg),
STRING_CONST("\""), nullptr);
string_deallocate(arg.str);
proc->args[i] = escarg;
}
}
#endif
}
#if FOUNDATION_PLATFORM_WINDOWS
# ifndef SEE_MASK_NOASYNC
# define SEE_MASK_NOASYNC 0x00000100
# endif
capacity = BUILD_MAX_PATHLEN;
cmdline = string_allocate(0, capacity);
//Don't prepend exe path to parameters if using ShellExecute
if (!(proc->flags & PROCESS_WINDOWS_USE_SHELLEXECUTE))
cmdline = string_copy(cmdline.str, capacity, STRING_ARGS(proc->path));
//Build command line string
for (i = 0; i < size; ++i) {
string_t arg = proc->args[i];
if (!arg.length)
continue;
if (cmdline.length + arg.length + 2 >= capacity) {
string_t newline;
capacity *= 2;
newline = string_allocate(0, capacity);
newline = string_copy(newline.str, capacity, STRING_ARGS(cmdline));
}
if (cmdline.length)
cmdline = string_append(STRING_ARGS(cmdline), capacity, STRING_CONST(" "));
cmdline = string_append(STRING_ARGS(cmdline), capacity, STRING_ARGS(arg));
}
if (!proc->wd.length)
proc->wd = string_clone(STRING_ARGS(environment_current_working_directory()));
wcmdline = wstring_allocate_from_string(STRING_ARGS(cmdline));
wwd = wstring_allocate_from_string(STRING_ARGS(proc->wd));
if (proc->flags & PROCESS_WINDOWS_USE_SHELLEXECUTE) {
SHELLEXECUTEINFOW sei;
wchar_t* wverb;
wchar_t* wpath;
wverb = (proc->verb.length ? wstring_allocate_from_string(STRING_ARGS(proc->verb)) : 0);
wpath = wstring_allocate_from_string(STRING_ARGS(proc->path));
ZeroMemory(&sei, sizeof(sei));
sei.cbSize = sizeof(SHELLEXECUTEINFOW);
sei.hwnd = 0;
sei.fMask = SEE_MASK_NOASYNC | SEE_MASK_FLAG_NO_UI | SEE_MASK_NOCLOSEPROCESS;
sei.lpVerb = wverb;
sei.lpFile = wpath;
sei.lpParameters = wcmdline;
sei.lpDirectory = wwd;
sei.nShow = SW_SHOWNORMAL;
if (!(proc->flags & PROCESS_CONSOLE))
sei.fMask |= SEE_MASK_NO_CONSOLE;
if (proc->flags & PROCESS_STDSTREAMS)
log_warn(0, WARNING_UNSUPPORTED, STRING_CONST("Unable to redirect standard in/out"
" through pipes when using ShellExecute for process spawning"));
log_debugf(0, STRING_CONST("Spawn process (ShellExecute): %.*s %.*s"),
STRING_FORMAT(proc->path), STRING_FORMAT(cmdline));
if (!ShellExecuteExW(&sei)) {
string_const_t errstr = system_error_message(0);
log_warnf(0, WARNING_SYSTEM_CALL_FAIL,
STRING_CONST("Unable to spawn process (ShellExecute) for executable '%.*s': %s"),
STRING_FORMAT(proc->path), STRING_FORMAT(errstr));
}
else {
proc->hp = sei.hProcess;
proc->ht = 0;
proc->code = 0;
}
wstring_deallocate(wverb);
wstring_deallocate(wpath);
}
else {
STARTUPINFOW si;
PROCESS_INFORMATION pi;
BOOL inherit_handles = FALSE;
memset(&si, 0, sizeof(si));
memset(&pi, 0, sizeof(pi));
si.cb = sizeof(si);
if (proc->flags & PROCESS_STDSTREAMS) {
proc->pipeout = pipe_allocate();
proc->pipein = pipe_allocate();
si.dwFlags |= STARTF_USESTDHANDLES;
si.hStdOutput = pipe_write_handle(proc->pipeout);
si.hStdInput = pipe_read_handle(proc->pipein);
si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
//Don't inherit wrong ends of pipes
SetHandleInformation(pipe_read_handle(proc->pipeout), HANDLE_FLAG_INHERIT, 0);
SetHandleInformation(pipe_write_handle(proc->pipein), HANDLE_FLAG_INHERIT, 0);
inherit_handles = TRUE;
}
log_debugf(0, STRING_CONST("Spawn process (CreateProcess): %.*s %.*s"),
STRING_FORMAT(proc->path), STRING_FORMAT(cmdline));
if (!CreateProcessW(0, wcmdline, 0, 0, inherit_handles,
(proc->flags & PROCESS_CONSOLE) ? CREATE_NEW_CONSOLE : 0, 0, wwd, &si, &pi)) {
string_const_t errstr = system_error_message(0);
log_warnf(0, WARNING_SYSTEM_CALL_FAIL,
STRING_CONST("Unable to spawn process (CreateProcess) for executable '%.*s': %.*s"),
STRING_FORMAT(proc->path), STRING_FORMAT(errstr));
stream_deallocate(proc->pipeout);
stream_deallocate(proc->pipein);
proc->pipeout = 0;
proc->pipein = 0;
}
else {
proc->hp = pi.hProcess;
proc->ht = pi.hThread;
proc->code = 0;
}
if (proc->pipeout)
pipe_close_write(proc->pipeout);
if (proc->pipein)
pipe_close_read(proc->pipein);
}
wstring_deallocate(wcmdline);
wstring_deallocate(wwd);
string_deallocate(cmdline.str);
if (proc->code < 0)
return proc->code; //Error
#endif
#if FOUNDATION_PLATFORM_MACOSX
if (proc->flags & PROCESS_MACOSX_USE_OPENAPPLICATION) {
proc->pid = 0;
LSApplicationParameters params;
ProcessSerialNumber psn;
FSRef* fsref = memory_allocate(0, sizeof(FSRef), 0, MEMORY_TEMPORARY | MEMORY_ZERO_INITIALIZED);
memset(¶ms, 0, sizeof(LSApplicationParameters));
memset(&psn, 0, sizeof(ProcessSerialNumber));
string_const_t pathstripped = string_strip(proc->path.str, proc->path.length, STRING_CONST("\""));
size_t localcap = pathstripped.length + 5;
string_t localpath = string_allocate(0, localcap - 1);
localpath = string_copy(localpath.str, localcap,
STRING_ARGS(pathstripped)); //Need it zero terminated
OSStatus status = 0;
status = FSPathMakeRef((uint8_t*)localpath.str, fsref, 0);
if (status < 0) {
localpath = string_append(localpath.str, localpath.length, localcap, STRING_CONST(".app"));
status = FSPathMakeRef((uint8_t*)localpath.str, fsref, 0);
}
CFStringRef* args = 0;
for (i = 0, size = array_size(proc->args); i < size;
++i) //App gets executable path automatically, don't include
array_push(args, CFStringCreateWithCString(0, proc->args[i].str, kCFStringEncodingUTF8));
CFArrayRef argvref = CFArrayCreate(0, (const void**)args, (CFIndex)array_size(args), 0);
params.flags = kLSLaunchDefaults;
params.application = fsref;
params.argv = argvref;
log_debugf(0, STRING_CONST("Spawn process (LSOpenApplication): %.*s"), STRING_FORMAT(localpath));
status = LSOpenApplication(¶ms, &psn);
if (status != 0) {
int err = status;
string_const_t errmsg = system_error_message(err);
proc->code = status;
log_errorf(0, ERROR_SYSTEM_CALL_FAIL,
STRING_CONST("Unable to spawn process for executable '%.*s': %.*s (%d)"),
STRING_FORMAT(localpath), STRING_FORMAT(errmsg), err);
}
CFRelease(argvref);
for (i = 0, size = array_size(args); i < size; ++i)
CFRelease(args[i]);
array_deallocate(args);
memory_deallocate(fsref);
string_deallocate(localpath.str);
if (status == 0) {
pid_t pid = 0;
GetProcessPID(&psn, &pid);
proc->pid = pid;
//Always "detached" with LSOpenApplication, not a child process at all
//Setup a kqueue to watch when process terminates so we can emulate a wait
proc->kq = kqueue();
if (proc->kq < 0) {
string_const_t errmsg = system_error_message(proc->kq);
log_errorf(0, ERROR_SYSTEM_CALL_FAIL,
STRING_CONST("Unable to create kqueue for process watch: %.*s (%d)"),
STRING_FORMAT(errmsg), proc->kq);
proc->kq = 0;
}
else {
struct kevent changes;
EV_SET(&changes, (pid_t)pid, EVFILT_PROC, EV_ADD | EV_RECEIPT, NOTE_EXIT, 0, 0);
int ret = kevent(proc->kq, &changes, 1, &changes, 1, 0);
if (ret != 1) {
int err = errno;
string_const_t errmsg = system_error_message(err);
log_errorf(0, ERROR_SYSTEM_CALL_FAIL,
STRING_CONST("Unable to setup kqueue for process watch, failed to add event to kqueue: %.*s (%d)"),
STRING_FORMAT(errmsg), err);
close(proc->kq);
proc->kq = 0;
}
}
}
goto exit;
}
#endif
#if FOUNDATION_PLATFORM_POSIX
//Insert executable arg at start and null ptr at end
size_t arg;
size_t argc = array_size(proc->args) + 1;
array_grow(proc->args, 2);
for (arg = argc - 1; arg > 0; --arg)
proc->args[arg] = proc->args[arg - 1];
proc->args[0] = string_clone(STRING_ARGS(proc->path));
proc->args[argc] = (string_t) { 0, 0 };
char** argv = memory_allocate(0, sizeof(char*) * (argc + 1), 0, MEMORY_PERSISTENT);
for (arg = 0; arg < argc; ++arg)
argv[arg] = proc->args[arg].str;
argv[argc] = 0;
if (proc->flags & PROCESS_STDSTREAMS) {
proc->pipeout = pipe_allocate();
proc->pipein = pipe_allocate();
}
proc->pid = 0;
pid_t pid = fork();
if (pid == 0) {
//Child
if (proc->wd.length) {
log_debugf(0, STRING_CONST("Spawned child process, setting working directory to %.*s"),
STRING_FORMAT(proc->wd));
environment_set_current_working_directory(STRING_ARGS(proc->wd));
}
log_debugf(0, STRING_CONST("Child process executing: %.*s"), STRING_FORMAT(proc->path));
if (proc->flags & PROCESS_STDSTREAMS) {
pipe_close_read(proc->pipeout);
dup2(pipe_write_handle(proc->pipeout), STDOUT_FILENO);
pipe_close_write(proc->pipein);
dup2(pipe_read_handle(proc->pipein), STDIN_FILENO);
}
int code = execv(proc->path.str, (char* const*)argv);
//Error
int err = errno;
string_const_t errmsg = system_error_message(err);
log_errorf(0, ERROR_SYSTEM_CALL_FAIL,
STRING_CONST("Child process failed execve() '%.*s': %.*s (%d) (%d)"),
STRING_FORMAT(proc->path), STRING_FORMAT(errmsg), err, code);
process_exit(PROCESS_EXIT_FAILURE);
FOUNDATION_UNUSED(code);
}
memory_deallocate(argv);
if (pid > 0) {
log_debugf(0, STRING_CONST("Child process forked, pid %d"), pid);
proc->pid = pid;
if (proc->pipeout)
pipe_close_write(proc->pipeout);
if (proc->pipein)
pipe_close_read(proc->pipein);
/*if (proc->flags & PROCESS_DETACHED) {
int cstatus = 0;
pid_t err = waitpid(pid, &cstatus, WNOHANG);
if (err == 0) {
//TODO: Ugly wait to make sure process spawned correctly
thread_sleep(500);
err = waitpid(pid, &cstatus, WNOHANG);
}
if (err > 0) {
//Process exited, check code
proc->pid = 0;
proc->code = (int)((char)WEXITSTATUS(cstatus));
log_debugf(0, STRING_CONST("Child process returned: %d"), proc->code);
return proc->code;
}
}*/
}
else {
//Error
string_const_t errmsg;
errmsg = system_error_message(proc->code);
log_errorf(0, ERROR_SYSTEM_CALL_FAIL, STRING_CONST("Unable to spawn process '%.*s': %.*s (%d)"),
STRING_FORMAT(proc->path), STRING_FORMAT(errmsg), proc->code);
if (proc->pipeout)
stream_deallocate(proc->pipeout);
if (proc->pipein)
stream_deallocate(proc->pipein);
proc->pipeout = 0;
proc->pipein = 0;
proc->code = PROCESS_INVALID_ARGS;
return proc->code;
}
#endif
#if !FOUNDATION_PLATFORM_WINDOWS && !FOUNDATION_PLATFORM_POSIX
FOUNDATION_ASSERT_FAIL("Process spawning not supported on platform");
#endif
#if FOUNDATION_PLATFORM_MACOSX
exit:
#endif
if (proc->flags & PROCESS_DETACHED)
return PROCESS_STILL_ACTIVE;
return process_wait(proc);
}