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Add a new ioctl for doing virgin disklabels.

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Submitted by:	dillon
This commit is contained in:
Jordan K. Hubbard 2000-10-31 07:05:40 +00:00
parent cda33ccbd5
commit e7c2b5a51d
4 changed files with 37 additions and 0 deletions
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34
sys/kern/subr_diskslice.c
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@ -342,6 +342,7 @@ dsioctl(dev, cmd, data, flags, sspp)
int slice;
struct diskslice *sp;
struct diskslices *ssp;
struct partition *pp;
slice = dkslice(dev);
ssp = *sspp;
@ -349,6 +350,39 @@ dsioctl(dev, cmd, data, flags, sspp)
lp = sp->ds_label;
switch (cmd) {
case DIOCGDVIRGIN:
lp = (struct disklabel *)data;
if (ssp->dss_slices[WHOLE_DISK_SLICE].ds_label) {
*lp = *ssp->dss_slices[WHOLE_DISK_SLICE].ds_label;
} else {
bzero(lp, sizeof(struct disklabel));
}
lp->d_magic = DISKMAGIC;
lp->d_magic2 = DISKMAGIC;
pp = &lp->d_partitions[RAW_PART];
pp->p_offset = 0;
pp->p_size = sp->ds_size;
lp->d_npartitions = MAXPARTITIONS;
if (lp->d_interleave == 0)
lp->d_interleave = 1;
if (lp->d_rpm == 0)
lp->d_rpm = 3600;
if (lp->d_nsectors == 0)
lp->d_nsectors = 32;
if (lp->d_ntracks == 0)
lp->d_ntracks = 64;
lp->d_bbsize = BBSIZE;
lp->d_sbsize = SBSIZE;
lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
lp->d_ncylinders = sp->ds_size / lp->d_secpercyl;
lp->d_secperunit = sp->ds_size;
lp->d_checksum = 0;
lp->d_checksum = dkcksum(lp);
return (0);
case DIOCGDINFO:
if (lp == NULL)
return (EINVAL);

1
sys/sys/disklabel.h
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@ -401,6 +401,7 @@ struct dos_partition {
#define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */
#define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */
#define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */
#define DIOCGDVIRGIN _IOR('d', 105, struct disklabel) /* get virgin label */
#define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */

1
sys/sys/diskmbr.h
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@ -401,6 +401,7 @@ struct dos_partition {
#define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */
#define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */
#define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */
#define DIOCGDVIRGIN _IOR('d', 105, struct disklabel) /* get virgin label */
#define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */

1
sys/sys/diskpc98.h
View File

@ -401,6 +401,7 @@ struct dos_partition {
#define DIOCSDINFO _IOW('d', 102, struct disklabel)/* set */
#define DIOCWDINFO _IOW('d', 103, struct disklabel)/* set, update disk */
#define DIOCGPART _IOW('d', 104, struct partinfo) /* get partition */
#define DIOCGDVIRGIN _IOR('d', 105, struct disklabel) /* get virgin label */
#define DIOCWLABEL _IOW('d', 109, int) /* write en/disable label */