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Code Issues Releases Activity

From: Lars Fredriksen <fredriks@mcs.com>

Browse Source 
Here is a patch to fd.c that will check to make sure the floppy
is not writeprotected when you try to open the device RW.
Submitted by:	lars
This commit is contained in:
Jordan K. Hubbard 1994-11-08 05:42:10 +00:00
parent 5755e2597a
commit 6febd9aaf5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=4260
3 changed files with 63 additions and 3 deletions
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22
sys/dev/fdc/fdc.c
View File

@ -40,7 +40,7 @@
* SUCH DAMAGE.
*
* from: @(#)fd.c 7.4 (Berkeley) 5/25/91
* $Id: fd.c,v 1.38 1994/10/27 20:44:46 jkh Exp $
* $Id: fd.c,v 1.40 1994/11/02 09:08:40 jkh Exp $
*
*/
@ -700,6 +700,7 @@ Fdopen(dev, flags)
fdu_t fdu = FDUNIT(minor(dev));
int type = FDTYPE(minor(dev));
fdc_p fdc;
int st3;
#if NFT > 0
/* check for a tape open */
@ -764,6 +765,25 @@ Fdopen(dev, flags)
}
}
}
/* select it */
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNON);
if (flags & FWRITE) {
/* Check to make sure the diskette */
/* is writable */
out_fdc(fdc->fdcu, NE7CMD_SENSED);
out_fdc(fdc->fdcu, fdu);
st3 = in_fdc(fdc->fdcu);
if(st3 & NE7_ST3_WP) {
printf("fd%d: Floppy not writable\n", fdu);
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNOFF);
return(EPERM);
}
}
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNOFF);
fd_data[fdu].ft = fd_types + type - 1;
fd_data[fdu].flags |= FD_OPEN;

22
sys/i386/isa/fd.c
View File

@ -40,7 +40,7 @@
* SUCH DAMAGE.
*
* from: @(#)fd.c 7.4 (Berkeley) 5/25/91
* $Id: fd.c,v 1.38 1994/10/27 20:44:46 jkh Exp $
* $Id: fd.c,v 1.40 1994/11/02 09:08:40 jkh Exp $
*
*/
@ -700,6 +700,7 @@ Fdopen(dev, flags)
fdu_t fdu = FDUNIT(minor(dev));
int type = FDTYPE(minor(dev));
fdc_p fdc;
int st3;
#if NFT > 0
/* check for a tape open */
@ -764,6 +765,25 @@ Fdopen(dev, flags)
}
}
}
/* select it */
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNON);
if (flags & FWRITE) {
/* Check to make sure the diskette */
/* is writable */
out_fdc(fdc->fdcu, NE7CMD_SENSED);
out_fdc(fdc->fdcu, fdu);
st3 = in_fdc(fdc->fdcu);
if(st3 & NE7_ST3_WP) {
printf("fd%d: Floppy not writable\n", fdu);
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNOFF);
return(EPERM);
}
}
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNOFF);
fd_data[fdu].ft = fd_types + type - 1;
fd_data[fdu].flags |= FD_OPEN;

22
sys/isa/fd.c
View File

@ -40,7 +40,7 @@
* SUCH DAMAGE.
*
* from: @(#)fd.c 7.4 (Berkeley) 5/25/91
* $Id: fd.c,v 1.38 1994/10/27 20:44:46 jkh Exp $
* $Id: fd.c,v 1.40 1994/11/02 09:08:40 jkh Exp $
*
*/
@ -700,6 +700,7 @@ Fdopen(dev, flags)
fdu_t fdu = FDUNIT(minor(dev));
int type = FDTYPE(minor(dev));
fdc_p fdc;
int st3;
#if NFT > 0
/* check for a tape open */
@ -764,6 +765,25 @@ Fdopen(dev, flags)
}
}
}
/* select it */
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNON);
if (flags & FWRITE) {
/* Check to make sure the diskette */
/* is writable */
out_fdc(fdc->fdcu, NE7CMD_SENSED);
out_fdc(fdc->fdcu, fdu);
st3 = in_fdc(fdc->fdcu);
if(st3 & NE7_ST3_WP) {
printf("fd%d: Floppy not writable\n", fdu);
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNOFF);
return(EPERM);
}
}
set_motor(fdc->fdcu, fd_data[fdu].fdsu, TURNOFF);
fd_data[fdu].ft = fd_types + type - 1;
fd_data[fdu].flags |= FD_OPEN;