busybox

/* vi: set sw=4 ts=4: */

/*

 * Licensed under GPLv2 or later, see file LICENSE in this source tree.

 *

 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>

 *

 * Changes:

 *

 * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses

 */

​

#include "libbb.h"

#include "utils.h"

#include "inet_common.h"

​

unsigned get_hz(void)

{

    static unsigned hz_internal;

    FILE *fp;

​

    if (hz_internal)

        return hz_internal;

​

    fp = fopen_for_read("/proc/net/psched");

    if (fp) {

        unsigned nom, denom;

​

        if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)

            if (nom == 1000000)

                hz_internal = denom;

        fclose(fp);

    }

    if (!hz_internal)

        hz_internal = bb_clk_tck();

    return hz_internal;

}

​

unsigned get_unsigned(char *arg, const char *errmsg)

{

    unsigned long res;

    char *ptr;

​

    if (*arg) {

        res = strtoul(arg, &ptr, 0);

//FIXME: "" will be accepted too, is it correct?!

        if (!*ptr && res <= UINT_MAX) {

            return res;

        }

    }

    invarg_1_to_2(arg, errmsg); /* does not return */

}

​

uint32_t get_u32(char *arg, const char *errmsg)

{

    unsigned long res;

    char *ptr;

​

    if (*arg) {

        res = strtoul(arg, &ptr, 0);

//FIXME: "" will be accepted too, is it correct?!

        if (!*ptr && res <= 0xFFFFFFFFUL) {

            return res;

        }