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linux ÏÂc ³ÌÐò ¶Î´íÎó ·ÖÎö


linux ÏÂc ³ÌÐò ¶Î´íÎó ·ÖÎö
(2008-12-31 16:50:57)
var $tag='it';
var $tag_code='2cec03ae0a5b0d224bb35c9b79dd54c7';
±êÇ©£ºit
 
·ÖÀࣺC/C++
fopen("/var/spool/cron/tmp","w+");
/////////////////////////////////////////
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main(){
int ret=-1;
printf("***************************************
delPolicy 
***************************************************\n");
FILE *f;
f=fopen("var/spool/cron/tmp","w");
if(f==NULL)
{
  printf("open tmp failed!\n");
  fclose(f);
  return -1;
}
printf("open two files
successfully!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
fclose(f);
ret=0;
printf("***************************************
delPolicy 
***************************************************\n");
return ret;
}
³öÏֶδíÎó:
 Ô­Òò:1:"/var/spool/cron/tmp"´íд³É"var/spool/cron/tmp"
     
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Ö¸ÏòµÄgdtÊÇÓÉÒÔ64λΪһ¸öµ¥Î»µÄ±í£¬ÔÚÕâÕűíÖоͱ£´æ×ųÌÐòÔËÐеĴúÂë¶ÎÒÔ¼°Êý¾Ý¶ÎµÄÆðʼµØÖ·,ÒÔ¼°Óë´ËÏàÓ¦µÄ¶ÎÏÞºÍÒ³Ãæ½»»»,
»¹ÓгÌÐòÔËÐм¶±ð»¹ÓÐÄÚ´æÁ£¶ÈµÈµÈµÄÐÅÏ¢¡£Ò»µ©Ò»¸ö³ÌÐò·¢ÉúÁËÔ½½ç·ÃÎÊ£¬cpu¾Í»á²úÉúÏàÓ¦µÄÒì³£±£»¤£¬ÓÚÊÇsegmentation
fault¾Í³öÏÖÁË.
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