[LTP] [PATCH V5 01/10] tst_device: Add tst_is_mounted() helper

[Viresh Kumar]

On 11-03-20, 11:26, Cyril Hrubis wrote:
> Hmm, for that we have to have compose the path for the comparsion
> anyways, since unless we pass an absoule path we can never be user if we
> have a right match or not. There may be leftover mount points from a
> failed tests that have faile to cleanup properly as well.
> 
> So I guess that we need one more function, with tmpdir in name, that
> would compose the right path for us and then call the tst_is_mntpoint().
> 
> I would have called that:
> 
> int tst_is_mntpoint_at_tmpdir(const char *path);

Is everyone fine with this code now :)

int tst_is_mounted(const char *path)
{
        char line[PATH_MAX];
        FILE *file;
        int ret = 0;

        file = SAFE_FOPEN(NULL, "/proc/mounts", "r");

        while (fgets(line, sizeof(line), file)) {
                if (strstr(line, path) != NULL) {
                        ret = 1;
                        break;
                }
        }

        SAFE_FCLOSE(NULL, file);

        if (!ret)
                tst_resm(TINFO, "No device is mounted at %s", path);

        return ret;
}

int tst_is_mounted_at_tmpdir(const char *path)
{
        char cdir[PATH_MAX], mpath[PATH_MAX];
        int ret;

        if (!getcwd(cdir, PATH_MAX))
                return 0;

        ret = snprintf(mpath, PATH_MAX, "%s/%s", cdir, path);
        if (ret < 0 || ret >= PATH_MAX)
                return 0;

        return tst_is_mounted(mpath);
}

-- 
viresh