just do a test for HTML

1/*******************************************************************************

2 * Author :Honker.y

3 * Email :Honker.ying@gmail.com

4 * Last modified :2011-05-05 18:59

5 * Filename :read_tset.c

6 * version :

7 * Description :子进程读取父进程传递的信息

8 * Revision :

9 * Compiler :gcc (Debian 4.4 .5 - 8)

10 * Install :

11 * Use :

12 *******************************************************************************/

13

14 #include <stdio.h>

15 #include <stdlib.h>

16 #include <unistd.h>

17 #include <sys/types.h>

18 #include <errno.h>

19 #include <string.h>

20 int

21 main (int argc, char *argv[])

22 {

23 int pipe_fd[2];

24 pid_t pid;

25 char r_buf[100];

26 char w_buf[4];

27 char *p_wbuf;

28 int r_num;

29

30 memset (r_buf, 0, sizeof (r_buf));

31 memset (w_buf, 0, sizeof (r_buf));

32 p_wbuf = w_buf;

33 if (pipe (pipe_fd) < 0)

34 {

35 printf ("pipe create error/n");

36 return -1;

37 }

38

39 if ((pid = fork ()) == 0)

40 {

41 printf ("/n");

42 close (pipe_fd[1]);

43 sleep (3); /* 确保父进程关闭写端 */

44 r_num = read (pipe_fd[0], r_buf, 100);

45 printf ("read num is %d the data read from the pipe is %d/n", r_num,

46 atoi (r_buf));

47

48 close (pipe_fd[0]);

49 exit (0);

50 }

51 else if (pid > 0)

52 {

53 close (pipe_fd[0]); /* read */

54 strcpy (w_buf, "111");

55 if (write (pipe_fd[1], w_buf, 4) != -1)

56 printf ("parent write over/n");

57 close (pipe_fd[1]); /* write */

58 printf ("parent close fd[1] over/n");

59 sleep (10);

60 }

61 exit (0);

62 }