glusterfs

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#define _GNU_SOURCE
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#include <stdio.h>
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#include <errno.h>
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#include <string.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 <stdlib.h>
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#include <unistd.h>
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int
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main(int argc, char *argv[])
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{
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    char *filename = NULL, *volname = NULL, *cmd = NULL;
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    char buffer[1024] = {
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        0,
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    };
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    int fd = -1;
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    int ret = -1;
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    struct stat statbuf = {
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        0,
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    };
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    if (argc != 3) {
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        fprintf(stderr, "usage: %s <file-name> <volname>\n", argv[0]);
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        goto out;
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    }
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    filename = argv[1];
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    volname = argv[2];
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    fd = open(filename, O_RDWR | O_CREAT, 0);
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    if (fd < 0) {
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        fprintf(stderr, "open (%s) failed (%s)\n", filename, strerror(errno));
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        goto out;
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    }
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    ret = write(fd, "test-content", 12);
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    if (ret < 0) {
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        fprintf(stderr, "write failed (%s)", strerror(errno));
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        goto out;
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    }
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    ret = fsync(fd);
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    if (ret < 0) {
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        fprintf(stderr, "fsync failed (%s)", strerror(errno));
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        goto out;
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    }
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    ret = fstat(fd, &statbuf);
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    if (ret < 0) {
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        fprintf(stderr, "fstat failed (%s)", strerror(errno));
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        goto out;
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    }
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    ret = asprintf(&cmd, "gluster --mode=script volume stop %s force", volname);
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    if (ret < 0) {
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        fprintf(stderr, "cannot construct cli command string (%s)",
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                strerror(errno));
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        goto out;
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    }
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    ret = system(cmd);
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    if (ret < 0) {
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        fprintf(stderr, "stopping volume (%s) failed", volname);
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        goto out;
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    }
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    sleep(3);
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    ret = read(fd, buffer, 1024);
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    if (ret >= 0) {
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        fprintf(stderr,
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                "read should've returned error, "
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                "but is successful\n");
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        ret = -1;
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        goto out;
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    }
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    ret = 0;
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out:
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    return ret;
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}
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