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setproctitle.c revision 1.1 
      1 /*
      2  * Copyright (c) 1994 Christopher G. Demetriou
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *      This product includes software developed by Christopher G. Demetriou.
     16  * 4. The name of the author may not be used to endorse or promote products
     17  *    derived from this software without specific prior written permission
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #if defined(LIBC_SCCS) && !defined(lint)
     32 static char *rcsid = "$Id: setproctitle.c,v 1.1 1994/04/14 03:13:43 cgd Exp $";
     33 #endif /* LIBC_SCCS and not lint */
     34 
     35 #include <sys/types.h>
     36 #include <sys/exec.h>
     37 #include <vm/vm.h>
     38 
     39 #include <stdio.h>
     40 #include <stdlib.h>
     41 #include <string.h>
     42 
     43 #ifdef __STDC__
     44 #include <stdarg.h>
     45 #else
     46 #include <varargs.h>
     47 #endif
     48 
     49 #define	MAX_PROCTITLE	2048
     50 
     51 extern char *__progname;		/* Program name, from crt0. */
     52 
     53 void
     54 #if __STDC__
     55 setproctitle(const char *fmt, ...)
     56 #else
     57 setproctitle(fmt, va_alist)
     58 	const char *fmt;
     59 	va_dcl
     60 #endif
     61 {
     62 	va_list ap;
     63 	static char buf[MAX_PROCTITLE];
     64 	int used;
     65 
     66 #if __STDC__
     67 	va_start(ap, fmt);
     68 #else
     69 	va_start(ap);
     70 #endif
     71 	if (fmt != NULL) {
     72 		used = snprintf(buf, MAX_PROCTITLE, "%s: ", __progname);
     73 		(void)vsnprintf(buf + used, MAX_PROCTITLE - used, fmt, ap);
     74 	} else
     75 		(void)snprintf(buf, MAX_PROCTITLE, "%s", __progname);
     76 	va_end(ap);
     77 
     78 	PS_STRINGS->ps_nargvstr = 1;
     79 	PS_STRINGS->ps_argvstr = buf;
     80 }
     81