linux ÏÂc ³ÌÐò ¶Î´íÎó ·ÖÎö
fopen("/var/spool/cron/tmp","w+");
/////////////////////////////////////////
££i nclude <sys/types.h>
££i nclude <sys/stat.h>
££i nclude <fcntl.h>
££i nclude <unistd.h>
££i nclude <stdio.h>
££i nclude <string.h>
££i nclude <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"
2:ÎļþÃû²»ÄÜΪtmp¹Ø¼ü×Ö,¿ÉΪmytmp
²úÉú¶Î´íÎó¾ÍÊÇ·ÃÎÊÁË´íÎóµÄÄÚ´æ¶Î£¬Ò»°ãÊÇÄãûÓÐȨÏÞ£¬»òÕ߸ù±¾¾Í²»´æÔÚ¶ÔÓ¦µÄÎïÀíÄÚ´æ,ÓÈÆä³£¼ûµÄÊÇ·ÃÎÊ0µØÖ·.
Ò»°ãÀ´Ëµ,¶Î´íÎó¾ÍÊÇÖ¸·ÃÎʵÄÄڴ泬³öÁËϵͳËù¸øÕâ¸ö³ÌÐòµÄÄÚ´æ¿Õ¼ä£¬Í¨³£Õâ¸öÖµÊÇÓÉgdtrÀ´±£´æµÄ£¬ËüÊÇÒ»¸ö48λµÄ¼Ä´æÆ÷£¬
ÆäÖеÄ32λÊDZ£´æÓÉËüÖ¸ÏòµÄgdt±í£¬ºó13λ±£´æÏàÓ¦ÓÚgdtµÄϱ꣬×îºó3λ°üÀ¨Á˳ÌÐòÊÇ·ñÔÚÄÚ´æÖÐÒÔ¼°³ÌÐòµÄÔÚcpuÖеÄÔËÐм¶±ð,
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.
ÔÚ±à³ÌÖÐÒÔϼ¸Àà×ö·¨ÈÝÒ×µ¼Ö¶δíÎó,»ù±¾ÊÇÊÇ´íÎóµØÊ¹ÓÃÖ¸ÕëÒýÆðµÄ
1)·ÃÎÊϵͳÊý¾ÝÇø£¬ÓÈÆäÊÇÍù ϵͳ±£»¤µÄÄÚ´æµØÖ·Ð´Êý¾Ý×î³£¼û¾ÍÊǸøÒ»¸öÖ¸ÕëÒÔ0µØÖ·
2)ÄÚ´æÔ½½ç(Êý×éÔ½½ç£¬±äÁ¿ÀàÐͲ»Ò»ÖµÈ) ·ÃÎʵ½²»ÊôÓÚÄãµÄÄÚ´æÇøÓò
½â¾ö·½·¨
ÎÒÃÇÔÚÓÃC/C++ÓïÑÔд³ÌÐòµÄʱºî£¬ÄÚ´æ¹ÜÀíµÄ¾ø´ó²¿·Ö¹¤×÷¶¼ÊÇÐèÒªÎÒÃÇÀ´×öµÄ¡£
ÈçºÎ¿ìËÙ¶¨Î»ÕâЩ"¶Î´íÎó"µÄÓï¾ä
1 dummy_ (void)
2&n
Ïà¹ØÎĵµ£º
Ò»¡¢
SVN
·þÎñÆ÷»·¾³µÄ´î½¨
ÎÒÃÇ¿ª·¢µÄÏîÄ¿ÊôÓÚ»ùÓÚ
ARM9
ºË
linux
ϵͳµÄǶÈëʽ¹ÜÀíÈí¼þ£¬Õû¸ö¿ª·¢±àÒë»·¾³±ØÐëÊÇÔÚ
linux
ÏÂÃæ¡£Òò´Ë£¬
SVN
·þÎñÆ÷µÄ»·¾³Ò²±ØÐëÊÇÔÚ
linux
ϵͳ¡£
ÏÖÓеķþÎñÆ÷»·¾³£º²Ù×÷ϵͳ£º
Redhat Linux AS4U4
£¬Äں˰汾Ϊ£º
2.6.13
......
½ñÌìºÜ¹û¶ÏµÄ°ÑÒ»Ö±ÔÚÐéÄâ»úÉϰ²×°µÄLinuxÐ¶ÔØÁË£¬¸Ð¾õÊÔÁËһС¶Îʱ¼äÔÚVMwareÉÏÃæ°²×°µÄLinux£¬Ê¹²»³ö¸Ð¾õÀ´¡£¸üÎªÖØÒªµÄÊǾÝ˵£¨ÎÒÒ²Ö»ÄܵÀÌý;˵ÁË£©java³ÌÐò¿ª·¢ºÜ¶àÊÇÔÚLinux»·¾³Ï¿ª·¢µÄ£¨ÄѵÀÊÇÒòΪÔÚLinuxÏÂÔËÐУ¿£©¡£ÎªÁ˸ü¼ÓµÄ½Ó½üÉú²ú£¬ÎÒ¾ö¶¨°²×°Ë«ÏµÍ³¡£
&n ......
#include
using namespace std;
typedef struct lnode
{
long sno;
char name[20];
struct lnode *next;
}LNode, *LinkList;
LinkList InitList()
{
LinkList head;
head = new LNode;
&nb ......
4.2 ¶à½Ç¶È±£Ö¤²âÊÔЧ¹û
¶ÔÓÚ´úÂëÖÊÁ¿ÒªÇóºÜ¸ßµÄÏîÄ¿À´Ëµ£¬½öÓа׺и²¸ÇÊÇÔ¶Ô¶²»¹»µÄ¡£°×ºÐ¸²¸Ç²»ÄÜ·¢ÏÖ´úÂëȱʧ£¬°×ºÐ¸²¸Ç»ùÓÚÏÖÓдúÂ룬Èç¹û´úÂë²»´æÔÚ£¬µ±È»²»ÄÜ·¢ÏÖ¡£ÎªÁ˼ì²â´úÂëȱʧ£¬ÐèÒªÈ˹¤¶Ô²âÊÔÊý¾Ý½øÐмì²é¡£°×ºÐ¸²¸ÇÒ²²»ÄÜ·¢ÏÖÓÃÀýδ·´Ó³¹¦ÄÜ¡£Èç¹ûÉè¼ÆÓÃÀýʱ£¬²âÊÔÔ±²»Á˽â´úÂëµÄ¹¦ÄÜ£¬Í ......
1. CµÄʵÏÖ
//stack.h
#ifndef STACK_H
#define STACK_H
#define STACK_CAPACITY 20//maximum size of stack
typedef int stackEle;
typedef struct
{
stackEle myArray[ STACK_CAPACITY ];
int myTop;
}stack;
//construct(initialize) an empty stack
stack *stack_init(void);
//return 1 if stack is em ......