mirror of
https://github.com/ceph/ceph
synced 2025-02-03 00:43:55 +00:00
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
|
#include <stdio.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
int main(int argc, char *argv[])
|
||
|
|
{
|
||
|
|
int fd, ret;
|
||
|
|
char obuf[32], ibuf[1024];
|
||
|
|
int n, max = 0;
|
||
|
|
|
||
|
|
if (argc > 2)
|
||
|
|
max = atoi(argv[2]);
|
||
|
|
if (!max)
|
||
|
|
max = 600;
|
||
|
|
|
||
|
|
memset(obuf, 0xff, sizeof(obuf));
|
||
|
|
|
||
|
|
for (n = 1; n <= max; ++n) {
|
||
|
|
fd = open(argv[1], O_RDWR | O_CREAT | O_TRUNC, 0644);
|
||
|
|
printf("%d/%d: open fd = %d\n", n, max, fd);
|
||
|
|
|
||
|
|
ret = write(fd, obuf, sizeof(obuf));
|
||
|
|
printf("write ret = %d\n", ret);
|
||
|
|
|
||
|
|
sleep(1);
|
||
|
|
|
||
|
|
ret = write(fd, obuf, sizeof(obuf));
|
||
|
|
printf("write ret = %d\n", ret);
|
||
|
|
|
||
|
|
ret = pread(fd, ibuf, sizeof(ibuf), 0);
|
||
|
|
printf("pread ret = %d\n", ret);
|
||
|
|
|
||
|
|
if (memcmp(obuf, ibuf, sizeof(obuf))) {
|
||
|
|
printf("mismatch\n");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
close(fd);
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|