/* fifo_read.c */
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#define MYFIFO "/tmp/myfifo"
#define MAX_BUFFER_SIZE PIPE_BUF
int main()
{
char buff[MAX_BUFFER_SIZE];
int fd;
int nread;
if (access(MYFIFO, F_OK) == -1)
{
if ((mkfifo(MYFIFO, 0666) < 0) && (errno != EEXIST))
{
printf("Cannot create fifo file\n");
exit(1);
}
}
fd = open(MYFIFO, O_RDONLY);
if (fd == -1)
{
printf("Open fifo file error\n");
exit(1);
}
while (1)
{
memset(buff, 0, sizeof(buff));
if ((nread = read(fd, buff, MAX_BUFFER_SIZE)) > 0)
{
printf("Read '%s' from FIFO\n", buff);
}
}
close(fd);
exit(0);
}
uj5u.com熱心網友回復：
忘記了好像是用ioctl這個函式，樓主想不出來怎么寫嗎？轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/90512.html
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