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#include <config.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SYSMACROS_H
# include <sys/sysmacros.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <linux/fd.h>
#include <sys/ioctl.h>
#include <linux/major.h>
#include "parse.h"
#include "driveprm.h"
#include "driveprmP.h"
typedef drive_field_t field_t;
static int TPI, RPM, DEVIATION, FF, DENSITY, CMOS;
#define F_CMOS FE__CMOS,&CMOS
#define F_TPI FE__TPI,&TPI
#define F_FF FE__FF,&FF
#define F_RPM FE__RPM,&RPM
#define F_DEVIATION FE__DEVIATION,&DEVIATION
#define F_DENSITY FE__DENSITY,&DENSITY
drivetypedesc_t cmos_types[]= {
{ 0, FF_UNKNOWN, DENS_UNKNOWN, 0, 0 },
{ 1, FF_525, DENS_DD, 48, 300, 0 },
{ 2, FF_525, DENS_HD, 96, 360, 0 },
{ 3, FF_35, DENS_DD, 0, 300, 0 },
{ 4, FF_35, DENS_HD, 0, 300, 0 },
{ 5, FF_35, DENS_ED, 0, 300, 0 },
{ 6, FF_35, DENS_ED, 0, 300, 0 }
};
static keyword_t ids[]= {
{ "cmos", F_CMOS, 0},
{ "tpi", F_TPI, 0 },
{ "rpm", F_RPM, 0},
{ "deviation", F_DEVIATION, 0},
{ "sd", F_DENSITY, DENS_SD },
{ "dd", F_DENSITY, DENS_DD },
{ "qd", F_DENSITY, DENS_QD },
{ "hd", F_DENSITY, DENS_HD },
{ "ed", F_DENSITY, DENS_ED },
{ "5.25", F_FF, FF_525 },
{ "3.5", F_FF, FF_35 },
{ "8", F_FF, FF_8 }
};
static int mask;
#define ISSET(x) ((mask) & ( 1 << FE__##x))
static void compute_params(drivedesc_t *drive)
{
/* initialize out array */
drive->type.cmos = 0;
drive->type.ff = FF_UNKNOWN;
drive->type.max_density = DENS_UNKNOWN;
drive->type.tpi = 0;
drive->type.rpm = 0;
drive->type.deviation = 0;
if(!ISSET(CMOS)) {
if(ISSET(FF) && ISSET(DENSITY)) {
switch(DENSITY) {
case DENS_DD:
if(FF == FF_525)
CMOS = 1;
else
CMOS = 3;
break;
case DENS_HD:
switch(FF) {
case FF_525:
CMOS = 2;
break;
case FF_35:
CMOS = 4;
break;
}
break;
case DENS_ED:
switch(FF) {
case FF_35:
CMOS = 6;
break;
}
break;
}
} else {
CMOS = drive->drvprm.cmos;
if (CMOS < 1 || CMOS > 6)
CMOS = 4;
}
}
if(CMOS) {
if(CMOS > 6 || CMOS < 1) {
fprintf(stderr, "Bad cmos code %d\n", CMOS);
exit(1);
}
drive->type = cmos_types[CMOS];
}
if(ISSET(RPM))
drive->type.rpm = RPM;
if(ISSET(TPI))
drive->type.tpi = TPI;
if(ISSET(FF))
drive->type.ff = FF;
if(ISSET(DENSITY))
drive->type.max_density = DENSITY;
if(ISSET(RPM))
drive->type.rpm = RPM;
if(ISSET(DEVIATION))
drive->type.deviation = DEVIATION;
drive->mask = mask;
}
static int getdrivenum(int fd, struct stat *buf)
{
int num;
if (fstat (fd, buf) < 0) {
perror("Can't fstat drive");
exit(1);
}
if (!S_ISBLK(buf->st_mode) ||
major(buf->st_rdev) != FLOPPY_MAJOR) {
fprintf(stderr,"Not a floppy drive\n");
exit(1);
}
num = minor( buf->st_rdev );
return (num & 3) + ((num & 0x80) >> 5);
}
/* ========================================= *
* Routines called by other parts of fdutils *
* ========================================= */
int parse_driveprm(int fd, drivedesc_t *drive)
{
int found;
drive->drivenum = getdrivenum(fd, &drive->buf);
if(drive->drivenum < 0)
return -1;
ioctl(fd, FDRESET, FD_RESET_IF_RAWCMD);
if (ioctl(fd, FDGETDRVPRM, & drive->drvprm ) < 0 ){
perror("get drive characteristics");
exit(1);
}
zero_all(ids, &mask);
driveprmin = fopen(DRIVEPRMFILE, "r");
if(driveprmin) {
/* if the file doesn't exist, infer all info from the cmos type
* stored in the floppy driver */
found = 0;
driveprmlex(drive->drivenum, ids, sizeof(ids)/sizeof(ids[0]),
&mask, &found);
if(!found)
zero_all(ids, &mask);
fclose(driveprmin);
}
compute_params(drive);
return 0;
}
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