Linux下C语言修改进程名称的方法

概述本文实例讲述了Linux下C语言修改进程名称的方法。分享给大家供大家参考。具体如下：

本文实例讲述了linux下C语言修改进程名称的方法。分享给大家供大家参考。具体如下：

#include <stdio.h>#include <string.h>#include "./util/setprocTitle.c"// extern char **environ;// int main(int argc,char *argv[])// {// int i;// printf("argc:%d\n",argc);// for (i = 0; i < argc; ++i){// printf("0x%x\n",argv[i]);// printf("argv[%d]:%s\n",i,argv[i]);// }// printf("evriron=%x\n",environ[0]);// return 0;// }int main(int argc,char **argv){ spt_init(argc,argv); setprocTitle("设置进程名为:this is a test"); sleep(1000); return 0;}

setprocTitle.c文件如下：

/* ========================================================================== * setprocTitle.c - linux/Darwin setprocTitle. * -------------------------------------------------------------------------- * copyright (C) 2010 William Ahern * copyright (C) 2013 Salvatore Sanfilippo * copyright (C) 2013 Stam He * * Permission is hereby granted,free of charge,to any person obtaining a * copy of this software and associated documentation files (the * "Software"),to deal in the Software without restriction,including * without limitation the rights to use,copy,modify,merge,publish,* distribute,sublicense,and/or sell copIEs of the Software,and to permit * persons to whom the Software is furnished to do so,subject to the * following conditions: * * The above copyright notice and this permission notice shall be included * in all copIEs or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS",WITHOUT WARRANTY OF ANY KIND,EXPRESS * OR IMPLIED,INCLUDING BUT NOT liMITED TO THE WARRANTIES OF * MERCHANTABIliTY,fitness FOR A PARTIculaR PURPOSE AND NONINFRINGEMENT. IN * NO EVENT SHALL THE AUTHORS OR copYRIGHT HolDERS BE liABLE FOR ANY CLaim,* damAGES OR OTHER liABIliTY,WHETHER IN AN ACTION OF CONTRACT,TORT OR * OTHERWISE,ARISING FROM,OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEAliNGS IN THE SOFTWARE. * ========================================================================== */#ifndef _GNU_SOURCE#define _GNU_SOURCE#endif #include <stddef.h>  /* NulL size_t */#include <stdarg.h>  /* va_List va_start va_end */#include <stdlib.h>  /* malloc(3) setenv(3) clearenv(3) setprocTitle(3) getprogname(3) */#include <stdio.h>  /* vsnprintf(3) snprintf(3) */#include <string.h>  /* strlen(3) strchr(3) strdup(3) memset(3) memcpy(3) */#include <errno.h>  /* errno program_invocation_name program_invocation_short_name */#if !defined(HAVE_SETPROCTitle)#define HAVE_SETPROCTitle (defined __NetBSD__ || defined __FreeBSD__ || defined __OpenBSD__)#endif#if !HAVE_SETPROCTitle#if (defined __linux || defined __APPLE__)extern char **environ;static struct {  /* original value */  const char *arg0;  /* Title space available */  char *base,*end;   /* pointer to original nul character within base */  char *nul;  _Bool reset;  int error;} SPT;#ifndef SPT_MIN#define SPT_MIN(a,b) (((a) < (b))? (a) : (b))#endifstatic inline size_t spt_min(size_t a,size_t b);static int spt_clearenv(voID);static int spt_copyenv(char *oldenv[]);static int spt_copyargs(int argc,char *argv[]) ;voID spt_init(int argc,char *argv[]);voID setprocTitle(const char *fmt,...);static inline size_t spt_min(size_t a,size_t b) {  return SPT_MIN(a,b);} /* spt_min() *//* * For discussion on the portability of the varIoUs methods,see * http://Lists.freebsd.org/pipermail/freebsd-stable/2008-June/043136.HTML */static int spt_clearenv(voID) {#if __GliBC__  clearenv();  return 0;#else  extern char **environ;  static char **tmp;  if (!(tmp = malloc(sizeof *tmp)))    return errno;  tmp[0] = NulL;  environ = tmp;  return 0;#endif} /* spt_clearenv() */static int spt_copyenv(char *oldenv[]) {  extern char **environ;  char *eq;  int i,error;  if (environ != oldenv)    return 0;  if ((error = spt_clearenv()))    goto error;  for (i = 0; oldenv[i]; i++) {    if (!(eq = strchr(oldenv[i],'=')))      continue;    *eq = '';    error = (0 != setenv(oldenv[i],eq + 1,1))? errno : 0;    *eq = '=';    if (error)      goto error;  }  return 0;error:  environ = oldenv;  return error;} /* spt_copyenv() */static int spt_copyargs(int argc,char *argv[]) {  char *tmp;  int i;  for (i = 1; i < argc || (i >= argc && argv[i]); i++) {    if (!argv[i])      continue;    if (!(tmp = strdup(argv[i])))      return errno;    argv[i] = tmp;  }  return 0;} /* spt_copyargs() */voID spt_init(int argc,char *argv[]) {    char **envp = environ;  char *base,*end,*nul,*tmp;  int i,error;  if (!(base = argv[0]))    return;  nul = &base[strlen(base)];  end = nul + 1;  for (i = 0; i < argc || (i >= argc && argv[i]); i++) {    if (!argv[i] || argv[i] < end)      continue;    end = argv[i] + strlen(argv[i]) + 1;  }  for (i = 0; envp[i]; i++) {    if (envp[i] < end)      continue;    end = envp[i] + strlen(envp[i]) + 1;  }  if (!(SPT.arg0 = strdup(argv[0])))    goto syerr;  if ((error = spt_copyenv(envp)))    goto error;  if ((error = spt_copyargs(argc,argv)))    goto error;  SPT.nul = nul;  SPT.base = base;  SPT.end = end;  return;syerr:  error = errno;error:  SPT.error = error;} /* spt_init() */#ifndef SPT_MAXTitle#define SPT_MAXTitle 255#endifvoID setprocTitle(const char *fmt,...) {  char buf[SPT_MAXTitle + 1]; /* use buffer in case argv[0] is passed */  va_List ap;  char *nul;  int len,error;  if (!SPT.base)    return;  if (fmt) {    va_start(ap,fmt);    len = vsnprintf(buf,sizeof buf,fmt,ap);    va_end(ap);  } else {    len = snprintf(buf,"%s",SPT.arg0);  }  if (len <= 0)    { error = errno; goto error; }  if (!SPT.reset) {    memset(SPT.base,SPT.end - SPT.base);    SPT.reset = 1;  } else {    memset(SPT.base,spt_min(sizeof buf,SPT.end - SPT.base));  }  len = spt_min(len,SPT.end - SPT.base) - 1);  memcpy(SPT.base,buf,len);  nul = &SPT.base[len];  if (nul < SPT.nul) {    *SPT.nul = '.';  } else if (nul == SPT.nul && &nul[1] < SPT.end) {    *SPT.nul = ' ';    *++nul = '';  }  return;error:  SPT.error = error;} /* setprocTitle() */#endif /* __linux || __APPLE__ */#endif /* !HAVE_SETPROCTitle */

希望本文所述对大家的C语言程序设计有所帮助。

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