1 /* $NetBSD: setproctitle.c,v 1.4 1995/05/16 14:23:06 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christopher G. Demetriou 18 * for the NetBSD Project. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char rcsid[] = "$NetBSD: setproctitle.c,v 1.4 1995/05/16 14:23:06 mycroft Exp $"; 36 #endif /* LIBC_SCCS and not lint */ 37 38 #include <sys/param.h> 39 #include <sys/types.h> 40 #include <sys/exec.h> 41 #include <vm/vm.h> 42 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 47 #ifdef __STDC__ 48 #include <stdarg.h> 49 #else 50 #include <varargs.h> 51 #endif 52 53 #define MAX_PROCTITLE 2048 54 55 extern char *__progname; /* Program name, from crt0. */ 56 57 void 58 #if __STDC__ 59 setproctitle(const char *fmt, ...) 60 #else 61 setproctitle(fmt, va_alist) 62 const char *fmt; 63 va_dcl 64 #endif 65 { 66 va_list ap; 67 static char buf[MAX_PROCTITLE], *bufp = buf; 68 int used; 69 70 #if __STDC__ 71 va_start(ap, fmt); 72 #else 73 va_start(ap); 74 #endif 75 if (fmt != NULL) { 76 used = snprintf(buf, MAX_PROCTITLE, "%s: ", __progname); 77 (void)vsnprintf(buf + used, MAX_PROCTITLE - used, fmt, ap); 78 } else 79 (void)snprintf(buf, MAX_PROCTITLE, "%s", __progname); 80 va_end(ap); 81 82 PS_STRINGS->ps_nargvstr = 1; 83 PS_STRINGS->ps_argvstr = &bufp; 84 } 85