Function assure_syscf_file

src/cfgfiles.c:2030–2068

#ifdef SYSCF
#ifdef SYSCF_FILE
void
assure_syscf_file(void)
{
    int fd;

#ifdef WIN32
    /* We are checking that the sysconf exists ... lock the path */
    fqn_prefix_locked[SYSCONFPREFIX] = TRUE;
#endif
    /*
     * All we really care about is the end result - can we read the file?
     * So just check that directly.
     *
     * Not tested on most of the old platforms (which don't attempt
     * to implement SYSCF).
     * Some ports don't like open()'s optional third argument;
     * VMS overrides open() usage with a macro which requires it.
     */
#ifndef VMS
#if defined(NOCWD_ASSUMPTIONS) && defined(WIN32)
    fd = open(fqname(SYSCF_FILE, SYSCONFPREFIX, 0), O_RDONLY);
#else
    fd = open(SYSCF_FILE, O_RDONLY);
#endif
#else   /* VMS */
    fd = open(SYSCF_FILE, O_RDONLY, 0);
#endif  /* VMS */
    if (fd >= 0) {
        /* readable */
        close(fd);
        return;
    }
#ifndef SFCTOOL
    if (gd.deferred_showpaths)
        do_deferred_showpaths(1); /* does not return */
#endif
    raw_printf("Unable to open SYSCF_FILE.\n");
    exit(EXIT_FAILURE);
}

#endif /* SYSCF_FILE */
#endif /* SYSCF */