1 files changed, 41 insertions, 0 deletions
diff --git a/sys/src/cmd/cwfs/proc.c b/sys/src/cmd/cwfs/proc.c
new file mode 100644
index 000000000..22ac02e60
--- /dev/null
+++ b/sys/src/cmd/cwfs/proc.c
@@ -0,0 +1,41 @@
+#include "all.h"
+#include "io.h"
+
+/*
+ * based on libthread's threadsetname, but drags in less library code.
+ * actually just sets the arguments displayed.
+ */
+void
+procsetname(char *fmt, ...)
+{
+	int fd;
+	char *cmdname;
+	char buf[128];
+	va_list arg;
+
+	va_start(arg, fmt);
+	cmdname = vsmprint(fmt, arg);
+	va_end(arg);
+	if (cmdname == nil)
+		return;
+	snprint(buf, sizeof buf, "#p/%d/args", getpid());
+	if((fd = open(buf, OWRITE)) >= 0){
+		write(fd, cmdname, strlen(cmdname)+1);
+		close(fd);
+	}
+	free(cmdname);
+}
+
+void
+newproc(void (*f)(void *), void *arg, char *text)
+{
+	int kid = rfork(RFPROC|RFMEM|RFNOWAIT);
+
+	if (kid < 0)
+		sysfatal("can't fork: %r");
+	if (kid == 0) {
+		procsetname("%s", text);
+		(*f)(arg);
+		exits("child returned");
+	}
+}