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Code Issues Releases Activity

Extend bd_print() so that it displays slices and partitions on disks.

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This commit is contained in:
Mike Smith 1999-01-09 02:36:19 +00:00
parent b6e83eb8f4
commit ee5799c4ee
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=42419
1 changed files with 82 additions and 7 deletions
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89
sys/boot/i386/libi386/biosdisk.c
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@ -23,7 +23,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: biosdisk.c,v 1.17 1998/11/02 23:28:11 msmith Exp $
* $Id: biosdisk.c,v 1.18 1998/11/13 23:40:02 msmith Exp $
*/
/*
@ -101,6 +101,8 @@ static int bd_read(struct open_disk *od, daddr_t dblk, int blks, caddr_t dest);
static int bd_int13probe(struct bdinfo *bd);
static void bd_printslice(struct open_disk *od, int offset, char *prefix);
static int bd_init(void);
static int bd_strategy(void *devdata, int flag, daddr_t dblk, size_t size, void *buf, size_t *rsize);
static int bd_realstrategy(void *devdata, int flag, daddr_t dblk, size_t size, void *buf, size_t *rsize);
@ -208,18 +210,85 @@ bd_int13probe(struct bdinfo *bd)
static void
bd_print(int verbose)
{
int i;
char line[80];
int i, j;
char line[80];
struct i386_devdesc dev;
struct open_disk *od;
struct dos_partition *dptr;
for (i = 0; i < nbdinfo; i++) {
sprintf(line, " disk%d: BIOS drive %c:", i,
sprintf(line, " disk%d: BIOS drive %c:\n", i,
(bdinfo[i].bd_unit < 0x80) ? ('A' + bdinfo[i].bd_unit) : ('C' + bdinfo[i].bd_unit - 0x80));
pager_output(line);
/* XXX more detail? */
pager_output("\n");
/* try to open the whole disk */
dev.d_kind.biosdisk.unit = i;
dev.d_kind.biosdisk.slice = -1;
dev.d_kind.biosdisk.partition = -1;
if (!bd_opendisk(&od, &dev)) {
/* Do we have a partition table? */
if (od->od_flags & BD_PARTTABOK) {
dptr = &od->od_parttab[0];
/* Check for a "truly dedicated" disk */
if ((dptr[3].dp_typ == DOSPTYP_386BSD) &&
(dptr[3].dp_start == 0) &&
(dptr[3].dp_size == 50000)) {
sprintf(line, " disk%d", i);
bd_printslice(od, 0, line);
} else {
for (j = 0; j < NDOSPART; j++) {
switch(dptr[j].dp_typ) {
case DOSPTYP_386BSD:
sprintf(line, " disk%ds%d", i, j + 1);
bd_printslice(od, dptr[j].dp_start, line);
break;
default:
}
}
}
}
bd_closedisk(od);
}
}
}
static void
bd_printslice(struct open_disk *od, int offset, char *prefix)
{
char line[80];
u_char buf[BIOSDISK_SECSIZE];
struct disklabel *lp;
int i;
/* read disklabel */
if (bd_read(od, offset + LABELSECTOR, 1, buf))
return;
lp =(struct disklabel *)(&buf[0]);
if (lp->d_magic != DISKMAGIC) {
sprintf(line, "%s: bad disklabel\n");
pager_output(line);
return;
}
/* Print partitions */
for (i = 0; i < lp->d_npartitions; i++) {
if ((lp->d_partitions[i].p_fstype == FS_BSDFFS) || (lp->d_partitions[i].p_fstype == FS_SWAP) ||
((lp->d_partitions[i].p_fstype == FS_UNUSED) &&
(od->od_flags & BD_FLOPPY) && (i == 0))) { /* Floppies often have bogus fstype, print 'a' */
sprintf(line, " %s%c: %s %.6dMB (%d - %d)\n", prefix, 'a' + i,
(lp->d_partitions[i].p_fstype == FS_SWAP) ? "swap" : "FFS",
lp->d_partitions[i].p_size / 2048, /* 512-byte sector assumption */
lp->d_partitions[i].p_offset, lp->d_partitions[i].p_offset + lp->d_partitions[i].p_size);
pager_output(line);
}
}
}
/*
* Attempt to open the disk described by (dev) for use by (f).
*
@ -323,8 +392,14 @@ bd_opendisk(struct open_disk **odp, struct i386_devdesc *dev)
dptr = &od->od_parttab[0];
od->od_flags |= BD_PARTTABOK;
/* Is this a request for the whole disk? */
if (dev->d_kind.biosdisk.slice == -1) {
sector == 0;
goto unsliced;
}
/* Try to auto-detect the best slice; this should always give a slice number */
if (dev->d_kind.biosdisk.slice < 1)
if (dev->d_kind.biosdisk.slice == 0)
dev->d_kind.biosdisk.slice = bd_bestslice(dptr);
switch (dev->d_kind.biosdisk.slice) {