xdmesg.c
来自「系统迁移的源代码: http://www.diku.dk/hjemmeside」· C语言 代码 · 共 40 行
C
40 行
#include <xenctrl.h>#include <xenguest.h>#include <stdio.h>#include <errno.h>#include <stdlib.h>#include <string.h>#include <ctype.h>#include <xs.h>#include <fcntl.h>#include <sys/mman.h>#define RING_SIZE 4096*8int xc;int main(int argc, char** argv){ char* b= (char*) mmap(0,RING_SIZE, PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0,0); char* a = b; unsigned int n=RING_SIZE; int i; xc = xc_interface_open(); xc_readconsolering(xc,&b,&n,1); for(i=0; i<n; i++) if(!isascii(a[i])) a[i]=' '; a[n]='\0'; xc_interface_close(xc); puts(a); return 0;}
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