Import sources from 2011-03-30 iso image

1 files changed, 58 insertions, 0 deletions

diff --git a/sys/src/ape/lib/ap/plan9/_exit.c b/sys/src/ape/lib/ap/plan9/_exit.c
new file mode 100755
index 000000000..e3886ff18
--- /dev/null
+++ b/sys/src/ape/lib/ap/plan9/_exit.c
@@ -0,0 +1,58 @@
+#include "lib.h"
+#include "sys9.h"
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h>
+
+int _finishing = 0;
+int _sessleader = 0;
+
+static char exitstatus[ERRMAX];
+
+void
+_exit(int status)
+{
+	_finish(status, 0);
+}
+
+void
+_finish(int status, char *term)
+{
+	int i, nalive;
+	char *cp;
+
+	if(_finishing)
+		_EXITS(exitstatus);
+	_finishing = 1;
+	if(status){
+		cp = _ultoa(exitstatus, status & 0xFF);
+		*cp = 0;
+	}else if(term){
+		strncpy(exitstatus, term, ERRMAX);
+		exitstatus[ERRMAX-1] = '\0';
+	}
+	if(_sessleader)
+		kill(0, SIGTERM);
+	_EXITS(exitstatus);
+}
+
+/* emulate: return p+sprintf(p, "%uld", v) */
+#define IDIGIT 15
+char *
+_ultoa(char *p, unsigned long v)
+{
+	char s[IDIGIT];
+	int n, i;
+
+	s[IDIGIT-1] = 0;
+	for(i = IDIGIT-2; i; i--){
+		n = v % 10;
+		s[i] = n + '0';
+		v = v / 10;
+		if(v == 0)
+			break;
+	}
+	strcpy(p, s+i);
+	return p + (IDIGIT-1-i);
+}