126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 1995 Peter Wemm <peter@freebsd.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, is permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice immediately at the beginning of the file, without modification,
|
|
* this list of conditions, and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Absolutely no warranty of function or purpose is made by the author
|
|
* Peter Wemm.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
/*
|
|
* Older FreeBSD 2.0, 2.1 and 2.2 had different ps_strings structures and
|
|
* in different locations.
|
|
* 1: old_ps_strings at the very top of the stack.
|
|
* 2: old_ps_strings at SPARE_USRSPACE below the top of the stack.
|
|
* 3: ps_strings at the very top of the stack.
|
|
* This attempts to support a kernel built in the #2 and #3 era.
|
|
*/
|
|
|
|
struct old_ps_strings {
|
|
char *old_ps_argvstr;
|
|
int old_ps_nargvstr;
|
|
char *old_ps_envstr;
|
|
int old_ps_nenvstr;
|
|
};
|
|
#define OLD_PS_STRINGS ((struct old_ps_strings *) \
|
|
(USRSTACK - SPARE_USRSPACE - sizeof(struct old_ps_strings)))
|
|
|
|
#if defined(__STDC__) /* from other parts of sendmail */
|
|
#include <stdarg.h>
|
|
#else
|
|
#include <varargs.h>
|
|
#endif
|
|
|
|
|
|
#define SPT_BUFSIZE 2048 /* from other parts of sendmail */
|
|
extern char * __progname; /* is this defined in a .h anywhere? */
|
|
|
|
void
|
|
#if defined(__STDC__)
|
|
setproctitle(const char *fmt, ...)
|
|
#else
|
|
setproctitle(fmt, va_alist)
|
|
const char *fmt;
|
|
va_dcl
|
|
#endif
|
|
{
|
|
static char buf[SPT_BUFSIZE];
|
|
static char *ps_argv[2];
|
|
va_list ap;
|
|
int mib[2];
|
|
struct ps_strings *ps_strings;
|
|
size_t len;
|
|
|
|
#if defined(__STDC__)
|
|
va_start(ap, fmt);
|
|
#else
|
|
va_start(ap);
|
|
#endif
|
|
|
|
buf[sizeof(buf) - 1] = '\0';
|
|
if (fmt) {
|
|
|
|
/* print program name heading for grep */
|
|
(void) snprintf(buf, sizeof(buf) - 1, "%s: ", __progname);
|
|
|
|
/*
|
|
* can't use return from sprintf, as that is the count of how
|
|
* much it wanted to write, not how much it actually did.
|
|
*/
|
|
|
|
len = strlen(buf);
|
|
|
|
/* print the argument string */
|
|
(void) vsnprintf(buf + len, sizeof(buf) - 1 - len, fmt, ap);
|
|
} else {
|
|
/* Idea from NetBSD - reset the title on fmt == NULL */
|
|
strncpy(buf, __progname, sizeof(buf) - 1);
|
|
}
|
|
|
|
va_end(ap);
|
|
|
|
ps_strings = NULL;
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_PS_STRINGS;
|
|
len = sizeof(ps_strings);
|
|
if (sysctl(mib, 2, &ps_strings, &len, NULL, 0) < 0 ||
|
|
ps_strings == NULL)
|
|
ps_strings = PS_STRINGS;
|
|
|
|
/* PS_STRINGS points to zeroed memory on a style #2 kernel */
|
|
if (ps_strings->ps_argvstr) {
|
|
/* style #3 */
|
|
ps_argv[0] = buf;
|
|
ps_argv[1] = NULL;
|
|
ps_strings->ps_nargvstr = 1;
|
|
ps_strings->ps_argvstr = ps_argv;
|
|
} else {
|
|
/* style #2 */
|
|
OLD_PS_STRINGS->old_ps_nargvstr = 1;
|
|
OLD_PS_STRINGS->old_ps_argvstr = buf;
|
|
}
|
|
}
|