libposix: build again

sys/src/lib/posix/internal.h

@@ -15,6 +15,9 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with Jehanne.  If not, see <http://www.gnu.org/licenses/>.
  */
+
+#define __POSIX_SIGNAL_PREFIX_LEN (sizeof(__POSIX_SIGNAL_PREFIX)-1)
+
 typedef struct WaitList WaitList;
 struct WaitList
 {
@@ -53,3 +56,9 @@ extern int __libposix_note_to_signal(char *note);
 extern int __libposix_is_child(int pid);
 
 extern void __libposix_forget_child(int pid);
+
+extern int __libposix_send_control_msg(int pid, char *msg);
+
+extern PosixError __libposix_notify_signal_to_process(int pid, int signal);
+
+extern PosixError __libposix_receive_signal(int sig);

sys/src/lib/posix/processes.c

@@ -102,7 +102,7 @@ __libposix_forget_child(int pid)
 	/* free the wait list as the memory is shared */
 	l = __libposix_child_list;
 	while(*l != nil){
-		c = *l
+		c = *l;
 		if(c->pid == pid){
 			*l = c->next;
 			free(c);

sys/src/lib/posix/sigchlds.c

@@ -44,19 +44,20 @@ release_inherited_resources(void)
 static void
 forwarding_note_handler(void *ureg, char *note)
 {
+	extern int __min_known_sig;
+	extern int __max_known_sig;
 	int sig;
-	PosixSignals psig;
+	PosixSignals signal;
 	if(strncmp(note, __POSIX_SIGNAL_PREFIX, __POSIX_SIGNAL_PREFIX_LEN) == 0){
 		sig = __libposix_note_to_signal(note);
 		if(sig < __min_known_sig || sig > __max_known_sig){
 			/* Ignore unknown signals */
 			noted(NCONT);
 		}
-		psig = __code_to_signal_map[sig];
-		switch(psig){
-			
-		}
-		postnote(PNPROC, *__libposix_sigchld_target_pid, note);
+		signal = __code_to_signal_map[sig];
+		__libposix_notify_signal_to_process(*__libposix_sigchld_target_pid, sig);
+		if(signal == PosixSIGCONT)
+			__libposix_send_control_msg(*__libposix_sigchld_target_pid, "start");
 		noted(NCONT);
 	} else {
 		/* what happened? */

sys/src/lib/posix/signals.c

@@ -121,16 +121,14 @@
 #include <posix.h>
 #include "internal.h"
 
-#define __POSIX_SIGNAL_PREFIX_LEN (sizeof(__POSIX_SIGNAL_PREFIX)-1)
-
 unsigned char *__signals_to_code_map;
 unsigned char *__code_to_signal_map;
 int *__handling_external_signal;
 
 static int __sigrtmin;
 static int __sigrtmax;
-static int __min_known_sig;
-static int __max_known_sig;
+int __min_known_sig;
+int __max_known_sig;
 static PosixSignalTrampoline __libposix_signal_trampoline;
 
 typedef enum PosixSignalDisposition
@@ -142,12 +140,11 @@ typedef enum PosixSignalDisposition
 	ResumeTheProcess
 } PosixSignalDisposition;
 
-static int
-note_all_writable_processes(int *errnop, int sig)
+static PosixError
+note_all_writable_processes(int sig)
 {
 	// TODO: loop over writable note files and post note.
-	*errnop = __libposix_get_errno(PosixEPERM);
-	return -1;
+	return PosixEPERM;
 }
 
 static void
@@ -288,8 +285,8 @@ __libposix_notify_signal_to_process(int pid, int signal)
 	return 0;
 }
 
-PosixError
-__libposix_notify_signal_to_group(int pid, int signal)
+static PosixError
+notify_signal_to_group(int pid, int signal)
 {
 	char buf[128];
 	int fd, n;
@@ -314,12 +311,12 @@ dispatch_signal(int pid, int sig)
 	PosixError error;
 	switch(pid){
 	case 0:
-		return __libposix_notify_signal_to_group(getpid(), sig);
+		return notify_signal_to_group(getpid(), sig);
 	case -1:
 		return note_all_writable_processes(sig);
 	default:
 		if(pid < 0)
-			return __libposix_notify_signal_to_group(-pid, sig);
+			return notify_signal_to_group(-pid, sig);
 		break;
 	}
 	signal = __code_to_signal_map[sig];
@@ -333,7 +330,6 @@ int
 POSIX_kill(int *errnop, int pid, int sig)
 {
 	PosixSignals signal;
-	PosixSignalDisposition action;
 	PosixError perror;
 
 	signal = __code_to_signal_map[sig];
@@ -367,21 +363,17 @@ __libposix_note_to_signal(char *note)
 int
 __libposix_note_handler(void *ureg, char *note)
 {
-	int sig, ret;
-	PosixSignalDisposition action;
+	int sig;
+	PosixError error;
 	if(strncmp(note, __POSIX_SIGNAL_PREFIX, __POSIX_SIGNAL_PREFIX_LEN) != 0)
 		return translate_jehanne_note(note); // TODO: should we translate common notes?
 	sig = __libposix_note_to_signal(note);
 	if(sig < __min_known_sig || sig > __max_known_sig)
 		sysfatal("libposix: '%s' does not carry a signal", note);
 	*__handling_external_signal = 1;
-	if(__libposix_signal_trampoline(sig))
-		action = SignalHandled;
-	else
-		action = default_signal_disposition(sig);
-	ret = execute_disposition(sig, action, -1);
+	error = __libposix_receive_signal(sig);
 	*__handling_external_signal = 0;
-	return ret;
+	return error == 0;
 }
 
 int