Category : OS/2 Files
Archive   : ZOO21E.ZIP
Filename : MSDOS.C
/* Highly system-dependent routines go here */
/* settime() */
/* Accepts a date/time in DOS format and sets the file time. Returns 1
if OK, 0 if error */
#include "options.h"
#include "zoo.h"
#include "zooio.h" /* to satisfy declarations in zoofns.h */
#include "zoofns.h"
#include "errors.i"
#include
/* register definitions specific for Turbo C */
union REGS {
struct { unsigned ax, bx, cx, dx, si, di, carry, flags; } x;
struct { unsigned char al, ah, bl, bh, cl, ch, dl, dh; } h;
};
int settime (file,date,time)
ZOOFILE file;
unsigned date, time;
{
extern intdos();
union REGS regs;
regs.h.ah = 0x57; /* DOS FileTimes call */
regs.h.al = 0x01; /* set date/time request */
regs.x.bx = fileno (file); /* get handle */
regs.x.cx = time;
regs.x.dx = date;
/* first flush file so later write won't occur on close */
fflush (file);
intdos (®s, ®s);
if (regs.x.carry != 0)
return (0);
else
return (1);
} /* settime */
/* gets date and time of file */
gettime (file,date,time)
ZOOFILE file;
unsigned *date, *time;
{
union REGS regs;
regs.h.ah = 0x57; /* DOS FileTimes call */
regs.h.al = 0x00; /* get date/time request */
regs.x.bx = fileno (file); /* get handle */
intdos (®s, ®s);
*time = regs.x.cx;
*date = regs.x.dx;
if (regs.x.carry != 0)
return (0);
else
return (1);
} /* settime */
/* space() */
/* Returns free space in bytes on disk n (0 = default, 1 = A, etc.). Returns
0 if drive number is invalid. Before getting disk space, the function
requests DOS to flush its internal buffers */
unsigned long space (drive, alloc_size)
int drive;
int *alloc_size;
{
unsigned long free_space;
union REGS regs;
regs.h.ah = 0x0d; /* disk reset DOS call */
intdos (®s, ®s);
regs.h.ah = 0x36; /* GetFreeSpace DOS call */
regs.h.dl = drive;
intdos (®s, ®s);
/* space = clusters * sectors/cluster * bytes/sector. */
/* ax=0xFFFF on error */
/* cluster size = sectors/cluster * bytes/sector */
*alloc_size = regs.x.ax * regs.x.cx;
/* space = cluster * alloc_size */
if (regs.x.ax == 0xffff)
return (0L); /* invalid drive */
else {
free_space = ((unsigned long) regs.x.bx) * *alloc_size;
return (free_space);
}
}
Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!
This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.
But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/