隐藏系统进程列表中的进程名称

时间:2015-04-21 10:04:51

标签: c process exec fork

我正在尝试从我的代码中启动一个进程, 最初我尝试了system()函数调用,。当我开始知道使用exec时,进程覆盖自身,调用可执行文件的二进制文件然后我尝试了exec()函数。

并且由于第一个参数(argv [0])是程序的名称,我故意将“datafile”作为第二个参数传递。执行时,我检查进程列表中的进程(通过ps -e / top),实际名称而不是“datafile”进程显示在进程列表中!有没有办法隐藏/重命名从子进程启动的二进制文件的名称?

void main()
{

pid_t pid;
int status;
fflush(stdout);
pid=fork();
if(pid<0)
        exit(3);
  if(pid==0)
  {
    execlp("/usr/bin/top","datafile",NULL); // "datafile" for deceiving the ps -e
   //system(top);
  }
  else
  {
    waitpid(pid,&status,0);
    printf("\nHello %d ",pid);
    fflush(stdout);
    exit(0);
  } 
}

执行二进制文件时,输出为:

Swap:  3998716 total,   165756 used,  3832960 free.   379712 cached Mem

      PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                                             
     3217 user      20   0  196840  12844   8120 S   0.7  0.8   0:09.02 unity-panel-ser                                               
     3650 user      20   0  320844  11976   7984 S   0.7  0.7   0:03.25 nm-applet                                                     
     7774 user      20   0    5524   1324    936 R   0.7  0.1   0:00.04 top                                                           
      630 message+  20   0    5440   2016   1028 S   0.3  0.1   0:05.06 dbus-daemon                                                   
      705 root      20   0   54864   4496   3572 S   0.3  0.3   0:05.11 NetworkManager                                                
     1025 mysql     20   0  326740  10380   1240 S   0.3  0.6   0:14.92 mysqld                                                        
     1129 root      20   0  200856  60132  46616 S   0.3  3.7   5:26.94 Xorg 
  

您好 7774

此处从mycode启动的“top command”在进程列表中可见! 我的目的是其他用户(包括root)不应该知道我正在触发什么命令,尽管进程列表中的多个a.out实例都可以!我期待输出如:

7774 user      20   0  196840  12844   8120 S   0.7  0.8   0:09.02 ./a.out                                               
7773 user      20   0  320844  11976   7984 S   0.7  0.7   0:09.01 ./a.out 

任何提示/帮助都会非常有成效。

更新 试过execv:

void main()
{

pid_t pid;
int status;
char *newargv[3] = { "neverkillme","www.yahoo.com", NULL };
fflush(stdout);
pid=fork();
if(pid<0)    exit(3);
if(pid==0)
 execv("/usr/bin/opera",newargv);
else
{
waitpid(pid,&status,0);
printf("\nneverkillme(opera) process's ID %d ",pid);
fflush(stdout);
exit(0);
}
}

输出:一旦我在新标签下运行a.out opera打开yahoo.com;但我可以看到“opera”被列为使用ps -e

的过程
Initially:
ac@ac:~/Documents/C$ ps -e| grep a.out  
ac@ac:~/Documents/C$ ps -e| grep opera 
ac@ac:~/Documents/C$ ./a.out  
    ** (opera:5248): CRITICAL **: os_bar_hide: assertion 'OS_IS_BAR (bar)' failed (opera:5248): Gtk-CRITICAL **: IA__gtk_widget_hide: assertion 'GTK_IS_WIDGET (widget)' failed
    ** (opera:5248): CRITICAL **: os_bar_set_parent: assertion 'OS_IS_BAR (bar)' failed
    ** (opera:5248): CRITICAL **: os_bar_hide: assertion 'OS_IS_BAR (bar)' failed (opera:5248): Gtk-CRITICAL **: IA__gtk_widget_hide: assertion 'GTK_IS_WIDGET (widget)' failed
    ** (opera:5248): CRITICAL **: os_bar_set_parent: assertion 'OS_IS_BAR (bar)' failed
    ** (opera:5248): CRITICAL **: os_bar_hide: assertion 'OS_IS_BAR (bar)' failed (opera:5248): Gtk-CRITICAL **: IA__gtk_widget_hide: assertion 'GTK_IS_WIDGET (widget)' failed
    ** (opera:5248): CRITICAL **: os_bar_set_parent: assertion 'OS_IS_BAR (bar)' failed
    ** (opera:5248): CRITICAL **: os_bar_hide: assertion 'OS_IS_BAR (bar)' failed (opera:5248): Gtk-CRITICAL **: IA__gtk_widget_hide: assertion 'GTK_IS_WIDGET (widget)' failed
    ** (opera:5248): CRITICAL **: os_bar_set_parent: assertion 'OS_IS_BAR (bar)' failed
    ** (opera:5248): CRITICAL **: os_bar_hide: assertion 'OS_IS_BAR (bar)' failed (opera:5248): Gtk-CRITICAL **: IA__gtk_widget_hide: assertion 'GTK_IS_WIDGET (widget)' failed
    ** (opera:5248): CRITICAL **: os_bar_set_parent: assertion 'OS_IS_BAR (bar)' failed

  neverkillme(opera) process's ID 5248 

ac@ac:~/Documents/C$ ps -e| grep opera  
5248 pts/24   00:00:01 opera 
cdac@cdac-Lenovo-B590:~/Documents/C$ ps -e| grep a.out  
5247  pts/24   00:00:00 a.out

1 个答案:

答案 0 :(得分:1)

不确定你是谁在这里捣乱;-),但问题的答案是使用execv()。第一个参数是实际运行的可执行文件的路径,第二个参数是程序将接收的argv []数组。如果更改其argv [0],则值将显示在top / ps而不是实际程序名称中。例如:

#include <unistd.h>

int main(int argc, char **argv) {
    char *newargv[4] = { "hi mom!", "-d", "60", NULL };

    execv("/usr/bin/top", newargv);
}

你可以检查一下:

$ ps ax | grep mom
26564 pts/10   S+     0:00 hi mom! -d 60
26573 pts/9    S+     0:00 grep mom