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/*
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* Copyright (c) 1998 Sendmail, Inc. All rights reserved.
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* Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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* A copy of the above mentioned LICENSE file can be found in
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* LICENSE.setproctitle.
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*
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* Ported for use with KDE by Waldo Bastian <bastian@kde.org>
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*/
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#include "setproctitle.h"
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/* _GNU_SOURCE might already be defined in <config.h> */
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE
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#endif
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#include <stdio.h>
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#include <stdarg.h>
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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/* _PATH_KMEM should be defined in <paths.h> */
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#ifndef _PATH_KMEM
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# define _PATH_KMEM "/dev/kmem"
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#endif
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#define SPACELEFT(buf, ptr) (sizeof buf - ((ptr) - buf))
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/*
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** SETPROCTITLE -- set process title for ps
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**
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** Parameters:
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** fmt -- a printf style format string.
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** a, b, c -- possible parameters to fmt.
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**
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** Returns:
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** none.
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**
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** Side Effects:
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** Clobbers argv of our main procedure so ps(1) will
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** display the title.
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*/
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#define SPT_NONE 0 /* don't use it at all */
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#define SPT_REUSEARGV 1 /* cover argv with title information */
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#define SPT_BUILTIN 2 /* use libc builtin */
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#define SPT_PSTAT 3 /* use pstat(PSTAT_SETCMD, ...) */
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#define SPT_PSSTRINGS 4 /* use PS_STRINGS->... */
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#define SPT_SYSMIPS 5 /* use sysmips() supported by NEWS-OS 6 */
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#define SPT_SCO 6 /* write kernel u. area */
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#define SPT_CHANGEARGV 7 /* write our own strings into argv[] */
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#ifndef SPT_TYPE
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# define SPT_TYPE SPT_REUSEARGV
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#endif
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#if SPT_TYPE != SPT_NONE && SPT_TYPE != SPT_BUILTIN
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# if SPT_TYPE == SPT_PSTAT
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# include <sys/pstat.h>
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# endif
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# if SPT_TYPE == SPT_PSSTRINGS
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# include <machine/vmparam.h>
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# ifdef HAVE_SYS_EXEC_H
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# include <sys/exec.h>
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# endif
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# ifndef PS_STRINGS /* hmmmm.... apparently not available after all */
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# undef SPT_TYPE
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# define SPT_TYPE SPT_REUSEARGV
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# else
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# ifndef NKPDE /* FreeBSD 2.0 */
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# define NKPDE 63
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typedef unsigned int *pt_entry_t;
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# endif
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# endif
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# endif
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# if SPT_TYPE == SPT_PSSTRINGS || SPT_TYPE == SPT_CHANGEARGV
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# define SETPROC_STATIC static
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# else
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# define SETPROC_STATIC
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# endif
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# if SPT_TYPE == SPT_SYSMIPS
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# include <sys/sysmips.h>
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# include <sys/sysnews.h>
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# endif
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# if SPT_TYPE == SPT_SCO
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# include <sys/immu.h>
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# include <sys/dir.h>
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# include <sys/user.h>
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# include <sys/fs/s5param.h>
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# if PSARGSZ > MAXLINE
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# define SPT_BUFSIZE PSARGSZ
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# endif
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# endif
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# ifndef SPT_PADCHAR
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# ifdef _AIX
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# define SPT_PADCHAR '\0'
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# else
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# define SPT_PADCHAR ' '
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# endif
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# endif
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#endif /* SPT_TYPE != SPT_NONE && SPT_TYPE != SPT_BUILTIN */
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# ifndef SPT_BUFSIZE
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# define SPT_BUFSIZE 2048
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# endif
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/*
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** Pointers for setproctitle.
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** This allows "ps" listings to give more useful information.
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*/
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char **Argv = NULL; /* pointer to argument vector */
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char *LastArgv = NULL; /* end of argv */
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void
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tdeinit_initsetproctitle(int argc, char **argv, char **envp)
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{
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int i, envpsize = 0;
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#if !defined(HAVE_NSGETENVIRON) || !defined(HAVE_CRT_EXTERNS_H)
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extern char **environ;
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#endif
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/*
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** Move the environment so setproctitle can use the space at
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** the top of memory.
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*/
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for (i = 0; envp[i] != NULL; i++)
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envpsize += strlen(envp[i]) + 1;
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environ = (char **) malloc(sizeof (char *) * (i + 1));
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if (environ == NULL)
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return;
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for (i = 0; envp[i] != NULL; i++)
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environ[i] = strdup(envp[i]);
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environ[i] = NULL;
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/*
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** Save start and extent of argv for setproctitle.
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*/
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Argv = argv;
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/*
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** Determine how much space we can use for setproctitle.
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** Use all contiguous argv and envp pointers starting at argv[0]
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*/
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for (i = 0; i < argc; i++)
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{
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if (i==0 || LastArgv + 1 == argv[i])
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LastArgv = argv[i] + strlen(argv[i]);
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else
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continue;
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}
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/*
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* On linux, we don't want to reuse the memory allocated for
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* the environment, as there are tools that try to read our environment
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* variables while we're running (ConsoleKit does that).
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* There is no way to move or resize it, so just not touchint it
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* seems to be the only option
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*/
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#ifndef __linux__
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for (i=0; envp[i] != NULL; i++)
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{
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if (LastArgv + 1 == envp[i])
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LastArgv = envp[i] + strlen(envp[i]);
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else
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continue;
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}
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#endif
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}
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#if SPT_TYPE != SPT_BUILTIN
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/*VARARGS1*/
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static void
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setproctitle(const char *fmt, ...)
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{
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# if SPT_TYPE != SPT_NONE
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char *p;
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int i;
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SETPROC_STATIC char buf[SPT_BUFSIZE];
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va_list ap;
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# if SPT_TYPE == SPT_PSTAT
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union pstun pst;
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# endif
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# if SPT_TYPE == SPT_SCO
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off_t seek_off;
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static int kmem = -1;
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#warning (rikkus) kmempid is declared as int, should be long
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static int kmempid = -1;
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struct user u;
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# endif
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p = buf;
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/* print the argument string */
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va_start(ap, fmt);
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(void) vsnprintf(p, SPACELEFT(buf, p), fmt, ap);
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va_end(ap);
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i = strlen(buf);
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# if SPT_TYPE == SPT_PSTAT
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pst.pst_command = buf;
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pstat(PSTAT_SETCMD, pst, i, 0, 0);
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# endif
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# if SPT_TYPE == SPT_PSSTRINGS
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PS_STRINGS->ps_nargvstr = 1;
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PS_STRINGS->ps_argvstr = buf;
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# endif
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# if SPT_TYPE == SPT_SYSMIPS
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sysmips(SONY_SYSNEWS, NEWS_SETPSARGS, buf);
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# endif
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# if SPT_TYPE == SPT_SCO
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if (kmem < 0 || kmempid != getpid())
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{
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if (kmem >= 0)
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close(kmem);
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kmem = open(_PATH_KMEM, O_RDWR, 0);
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if (kmem < 0)
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return;
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(void) fcntl(kmem, F_SETFD, 1);
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kmempid = getpid();
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}
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buf[PSARGSZ - 1] = '\0';
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seek_off = UVUBLK + (off_t) u.u_psargs - (off_t) &u;
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if (lseek(kmem, (off_t) seek_off, SEEK_SET) == seek_off)
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(void) write(kmem, buf, PSARGSZ);
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# endif
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# if SPT_TYPE == SPT_REUSEARGV
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if (i > LastArgv - Argv[0] - 2)
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{
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i = LastArgv - Argv[0] - 2;
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buf[i] = '\0';
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}
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(void) strcpy(Argv[0], buf);
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p = &Argv[0][i];
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while (p < LastArgv)
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*p++ = SPT_PADCHAR;
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Argv[1] = NULL;
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# endif
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# if SPT_TYPE == SPT_CHANGEARGV
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Argv[0] = buf;
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Argv[1] = 0;
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# endif
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# endif /* SPT_TYPE != SPT_NONE */
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}
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#endif /* SPT_TYPE != SPT_BUILTIN */
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/*
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** SM_SETPROCTITLE -- set process task and set process title for ps
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**
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** Possibly set process status and call setproctitle() to
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** change the ps display.
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**
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** Parameters:
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** status -- whether or not to store as process status
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** fmt -- a printf style format string.
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** a, b, c -- possible parameters to fmt.
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**
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** Returns:
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** none.
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*/
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/*VARARGS2*/
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void
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tdeinit_setproctitle(const char *fmt, ...)
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{
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char buf[SPT_BUFSIZE];
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va_list ap;
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/* print the argument string */
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va_start(ap, fmt);
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(void) vsnprintf(buf, SPT_BUFSIZE, fmt, ap);
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va_end(ap);
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setproctitle("%s", buf);
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}
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