errclear 0 으로 삭제한 log 복구

#include<stdio.h>

#include<unistd.h>

#include<time.h>

/* recovery errlog V1.2, made by rew */

int main(void)

{

FILE *fp;

char str[]={0xff,0xff};

int s=0;

struct tm *t;

time_t timer;

timer=time(NULL);

t = localtime(&timer);

if(0 == accessx("/var/adm/ras/errlog",W_OK,ACC_SELF))

{

printf("Recovery errlog V1.2\n");

printf("1. After copy errlog file then recovery\n");

printf("2. Just Recovery errlog file\n");

printf("3. Exit\n");

printf("choose the number : ");

scanf("%d",&s);

switch(s){

case 1:

printf("please wait, 10sec\n");

system("cp /var/adm/ras/errlog /var/adm/ras/errlog_`date +%Y%1m%d`");

printf("cp /var/adm/ras/errlog /var/adm/ras/errlog_%d%d%d\ndone\n",t->tm_year+1900,t->tm_mon+1,t->tm_mday);

fp = fopen("/var/adm/ras/errlog","r+");

fseek(fp,14,SEEK_SET);

fwrite(&str,1,2,fp);

fseek(fp,26,SEEK_SET);

fwrite(&str,1,2,fp);

fclose(fp);

system("/usr/lib/errdemon -i /var/adm/ras/errlog");

printf("errlog recovery done\n");

break;

case 2:

printf("please wait, 10sec\n");

fp = fopen("/var/adm/ras/errlog","r+");

fseek(fp,14,SEEK_SET);

fwrite(&str,1,2,fp);

fseek(fp,26,SEEK_SET);

fwrite(&str,1,2,fp);

fclose(fp);

system("/usr/lib/errdemon -i /var/adm/ras/errlog");

printf("errlog recovery done\n");

break;

case 3:

break;

}

}

else{

printf("you have no write permission\n");

}

return 0;

}