Function root_status

src/watcher/watcher.c:767–779

} root_status_t;

static root_status_t root_status(const char *root_path, int *out_errno) {
    *out_errno = 0;
    if (!root_path) {
        return ROOT_UNCERTAIN;
    }
    struct stat st;
    if (stat(root_path, &st) == 0) {
        /* Exists but is no longer a directory → the root directory is gone. */
        return S_ISDIR(st.st_mode) ? ROOT_PRESENT : ROOT_MISSING;
    }
    *out_errno = errno;
    return cbm_watcher_root_missing_errno(errno) ? ROOT_MISSING : ROOT_UNCERTAIN;
}

/* Sustained-absence window (seconds) before a missing root may be pruned.
 * Generous default: 10 minutes. Override with CBM_WATCHER_PRUNE_GRACE_S