aboutsummaryrefslogtreecommitdiffstats
path: root/com32/lib/opendir.c
blob: aa2ba5b91033f09bcf7693edbbcc30f0af87a644 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/*
 * opendir.c
 */

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

#include <com32.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>


DIR *opendir(const char *pathname)
{
	DIR *newdir;
	com32sys_t regs;

	newdir = NULL;

	strlcpy(__com32.cs_bounce, pathname, __com32.cs_bounce_size);

	regs.eax.w[0] = 0x0020;
	regs.esi.w[0] = OFFS(__com32.cs_bounce);
	regs.es = SEG(__com32.cs_bounce);

	__com32.cs_intcall(0x22, &regs, &regs);

	if (!(regs.eflags.l & EFLAGS_CF)) {
		/* Initialization: malloc() then zero */
		newdir = calloc(1, sizeof(DIR));
		strcpy(newdir->dd_name, pathname);
		newdir->dd_fd = regs.esi.w[0];
		newdir->dd_sect = regs.eax.l;
		newdir->dd_stat = 0;
	}

	/* We're done */
	return newdir;
}