com32/lib/getcwd.c


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/*
 * getcwd.c
 */

#include <syslinux/config.h>
#include <klibc/compiler.h>
#include <com32.h>

#include <dirent.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

char *getcwd(char *buf, size_t size)
{
    static com32sys_t reg;
    char *pwdstr, *ret;

    reg.eax.w[0] = 0x001f;
    __intcall(0x22, &reg, &reg);
    pwdstr = MK_PTR(reg.es, reg.ebx.w[0]);
    if ((strlen(pwdstr) < size) && (buf != NULL)) {
	strcpy(buf, pwdstr);
	ret = buf;
    } else {
	ret = NULL;
	errno = ERANGE;
    }
    return ret;
}