mirror of
https://github.com/ceph/ceph
synced 2024-12-27 05:53:20 +00:00
46 lines
851 B
C
46 lines
851 B
C
#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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int main(int argc, char *argv[])
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{
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char obuf[32], ibuf[1024];
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int n, max = 0;
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if (argc > 2)
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max = atoi(argv[2]);
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if (!max)
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max = 600;
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memset(obuf, 0xff, sizeof(obuf));
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for (n = 1; n <= max; ++n) {
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int fd, ret;
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fd = open(argv[1], O_RDWR | O_CREAT | O_TRUNC, 0644);
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printf("%d/%d: open fd = %d\n", n, max, fd);
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ret = write(fd, obuf, sizeof(obuf));
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printf("write ret = %d\n", ret);
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sleep(1);
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ret = write(fd, obuf, sizeof(obuf));
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printf("write ret = %d\n", ret);
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ret = pread(fd, ibuf, sizeof(ibuf), 0);
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printf("pread ret = %d\n", ret);
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if (memcmp(obuf, ibuf, sizeof(obuf))) {
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printf("mismatch\n");
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close(fd);
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break;
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}
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close(fd);
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}
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return 0;
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}
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