99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
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/* $NetBSD: setproctitle.c,v 1.22 2008/01/03 04:26:27 christos Exp $ */
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/*
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* Copyright (c) 1994, 1995 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the
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* NetBSD Project. See http://www.NetBSD.org/ for
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* information about NetBSD.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: setproctitle.c,v 1.22 2008/01/03 04:26:27 christos Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/exec.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef __weak_alias
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__weak_alias(setproctitle,_setproctitle)
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#endif
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#define MAX_PROCTITLE 2048
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/*
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* For compatibility with old versions of crt0 that didn't define __ps_strings,
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* define it as a common here.
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*/
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struct ps_strings *__ps_strings;
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void
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setproctitle(const char *fmt, ...)
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{
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static char buf[MAX_PROCTITLE], *bufp;
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const char *pname = getprogname();
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if (fmt != NULL) {
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int len = snprintf(buf, sizeof(buf), "%s: ", pname);
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if (len >= 0) {
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va_list ap;
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va_start(ap, fmt);
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(void)vsnprintf(buf + len, sizeof(buf) - len, fmt, ap);
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va_end(ap);
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}
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} else
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(void)snprintf(buf, sizeof(buf), "%s", pname);
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bufp = buf;
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#ifdef USRSTACK
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/*
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* For compatibility with old versions of crt0 and old kernels, set
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* __ps_strings to a default value if it's null.
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* But only if USRSTACK is defined. It might not be defined if
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* user-level code can not assume it's a constant (i.e. m68k).
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*/
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if (__ps_strings == 0)
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__ps_strings = PS_STRINGS;
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#endif /* USRSTACK */
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if (__ps_strings != 0) {
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__ps_strings->ps_nargvstr = 1;
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__ps_strings->ps_argvstr = &bufp;
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}
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}
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