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vncs: use procsetname() instead of rolling your own

--- a/sys/src/cmd/vnc/vncs.c

+++ b/sys/src/cmd/vnc/vncs.c

@@ -49,9 +49,6 @@

 static void vncaccept(Vncs*);

 static int vncsfmt(Fmt*);

 static void getremote(char*, char*);

-static void vncname(char*, ...);

-#pragma varargck argpos vncname 1

-

 #pragma varargck type "V" Vncs*

 void

@@ -233,7 +230,7 @@

 	atexit(shutdown);

 	notify(noteshutdown);

 	for(;;){

-		vncname("listener");

+		procsetname("listener");

 		cfd = listen(adir, ldir);

 		if(cfd < 0)

 			break;

@@ -614,24 +611,7 @@

 	}

 }

-static void

-vncname(char *fmt, ...)

-{

-	int fd;

-	char name[64], buf[32];

-	va_list arg;

-	va_start(arg, fmt);

-	vsnprint(name, sizeof name, fmt, arg);

-	va_end(arg);

-

-	sprint(buf, "/proc/%d/args", getpid());

-	if((fd = open(buf, OWRITE)) >= 0){

-		write(fd, name, strlen(name));

-		close(fd);

-	}

-}

-

 /*

  * Set the pixel format being sent.  Can only happen once.

  * (Maybe a client would send this again if the screen changed

@@ -731,7 +711,7 @@

 	char *buf;

 	Rectangle r;

-	vncname("read %V", v);

+	procsetname("read %V", v);

 	for(;;){

 		type = vncrdchar(v);

@@ -1150,7 +1130,7 @@

 {

 	ulong last = 0;

-	vncname("write %V", v);

+	procsetname("write %V", v);

 	while(!v->ndead){

 		sleep(sleeptime);

 		updatesnarf(v);