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DISK: Add 2.11 BSD and Net BSD file system recognizers

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Both NetBSD and OpenBSD have identical partition information
Report both names when such a file system is found
This commit is contained in:
Mark Pizzolato
2022-06-11 21:40:02 -07:00
parent 9ca26e5b47
commit 5448965f70
2 changed files with 294 additions and 1 deletions
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293
sim_disk.c
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@@ -1554,6 +1554,297 @@ if (readonly)
return ret_val;
}
/* 2.11 BSD Volume Recognizer - Structure Info gathered from: the 2.11 BSD disklabel section 5 man page */
#define BSD_DISKMAGIC ((uint32) 0x82564557) /* The disk label magic number */
#define BSD_211_MAXPARTITIONS 8
typedef struct BSD_211_disklabel {
uint32 d_magic; /* the magic number */
uint8 d_type; /* drive type */
uint8 d_subtype; /* controller/d_type specific */
char d_typename[16]; /* type name, e.g. "eagle" */
/*
* d_packname contains the pack identifier and is returned when
* the disklabel is read off the disk or in-core copy.
* d_boot0 is the (optional) name of the primary (block 0) bootstrap
* as found in /mdec. This is returned when using
* getdiskbyname(3) to retrieve the values from /etc/disktab.
*/
char d_packname[16]; /* pack identifier */
/* disk geometry: */
uint16 d_secsize; /* # of bytes per sector */
uint16 d_nsectors; /* # of data sectors per track */
uint16 d_ntracks; /* # of tracks per cylinder */
uint16 d_ncylinders; /* # of data cylinders per unit */
uint16 d_secpercyl; /* # of data sectors per cylinder */
uint32 d_secperunit; /* # of data sectors per unit */
/*
* Spares (bad sector replacements) below
* are not counted in d_nsectors or d_secpercyl.
* Spare sectors are assumed to be physical sectors
* which occupy space at the end of each track and/or cylinder.
*/
uint16 d_sparespertrack; /* # of spare sectors per track */
uint16 d_sparespercyl; /* # of spare sectors per cylinder */
/*
* Alternate cylinders include maintenance, replacement,
* configuration description areas, etc.
*/
uint16 d_acylinders; /* # of alt. cylinders per unit */
/* hardware characteristics: */
/*
* d_interleave, d_trackskew and d_cylskew describe perturbations
* in the media format used to compensate for a slow controller.
* Interleave is physical sector interleave, set up by the formatter
* or controller when formatting. When interleaving is in use,
* logically adjacent sectors are not physically contiguous,
* but instead are separated by some number of sectors.
* It is specified as the ratio of physical sectors traversed
* per logical sector. Thus an interleave of 1:1 implies contiguous
* layout, while 2:1 implies that logical sector 0 is separated
* by one sector from logical sector 1.
* d_trackskew is the offset of sector 0 on track N
* relative to sector 0 on track N-1 on the same cylinder.
* Finally, d_cylskew is the offset of sector 0 on cylinder N
* relative to sector 0 on cylinder N-1.
*/
uint16 d_rpm; /* rotational speed */
uint8 d_interleave; /* hardware sector interleave */
uint8 d_trackskew; /* sector 0 skew, per track */
uint8 d_cylskew; /* sector 0 skew, per cylinder */
uint8 d_headswitch; /* head swith time, usec */
uint16 d_trkseek; /* track-to-track seek, msec */
uint16 d_flags; /* generic flags */
#define NDDATA 5
uint32 d_drivedata[NDDATA]; /* drive-type specific information */
#define NSPARE 5
uint32 d_spare[NSPARE]; /* reserved for future use */
uint32 d_magic2; /* the magic number (again) */
uint16 d_checksum; /* xor of data incl. partitions */
/* filesystem and partition information: */
uint16 d_npartitions; /* number of partitions in following */
uint8 d_bbsize; /* size of boot area at sn0, bytes */
uint8 d_sbsize; /* max size of fs superblock, bytes */
struct { /* the partition table */
uint32 p_size; /* number of sectors in partition */
uint32 p_offset; /* starting sector */
uint16 p_fsize; /* filesystem basic fragment size */
uint8 p_fstype; /* filesystem type, see below */
uint8 p_frag; /* filesystem fragments per block */
} d_partitions[BSD_211_MAXPARTITIONS];/* actually may be more */
} BSD_211_disklabel;
static t_offset get_BSD_211_filesystem_size (UNIT *uptr, uint32 physsectsz, t_bool *readonly)
{
DEVICE *dptr;
t_addr saved_capac;
struct disk_context *ctx = (struct disk_context *)uptr->disk_ctx;
t_addr temp_capac = (sim_toffset_64 ? (t_addr)0xFFFFFFFFu : (t_addr)0x7FFFFFFFu); /* Make sure we can access the largest sector */
uint8 sector_buf[512];
BSD_211_disklabel *Label = (BSD_211_disklabel *)sector_buf;
t_offset ret_val = (t_offset)-1;
uint16 i;
uint32 max_lbn = 0, max_lbn_partnum = 0;
t_seccnt sects_read;
uint16 sum = 0;
uint16 *pdata;
#define WORDSWAP(l) (((l >> 16) & 0xFFFF) | ((l & 0xFFFF) << 16))
if ((dptr = find_dev_from_unit (uptr)) == NULL)
return ret_val;
saved_capac = uptr->capac;
uptr->capac = temp_capac;
if ((_DEC_rdsect (uptr, 1, sector_buf, &sects_read, 512 / ctx->sector_size, physsectsz)) ||
(sects_read != (512 / ctx->sector_size)))
goto Return_Cleanup;
/* Confirm the Label magic numbers */
if ((WORDSWAP(Label->d_magic) != BSD_DISKMAGIC) ||
(WORDSWAP(Label->d_magic2) != BSD_DISKMAGIC))
goto Return_Cleanup;
/* Verify the label checksum */
if (Label->d_npartitions > BSD_211_MAXPARTITIONS)
goto Return_Cleanup;
pdata = (uint16 *)Label;
for (sum = 0, pdata = (uint16 *)Label; pdata < (uint16 *)&Label->d_partitions[Label->d_npartitions]; pdata++)
sum ^= *pdata;
if (sum != 0)
goto Return_Cleanup;
/* Walk through the partitions */
for (i = 0; i < Label->d_npartitions; i++) {
uint32 end_lbn = WORDSWAP (Label->d_partitions[i].p_offset) + WORDSWAP (Label->d_partitions[i].p_size);
if (end_lbn > max_lbn) {
max_lbn = end_lbn;
max_lbn_partnum = i;
}
}
sim_messagef (SCPE_OK, "%s: '%s' Contains BSD 2.11 partitions\n", sim_uname (uptr), uptr->filename);
sim_messagef (SCPE_OK, "Partition with highest sector: %c, Sectors On Disk: %u\n", 'a' + max_lbn_partnum, max_lbn);
ret_val = ((t_offset)max_lbn) * 512;
Return_Cleanup:
uptr->capac = saved_capac;
if (readonly)
*readonly = sim_disk_wrp (uptr);
return ret_val;
}
/* NetBSD Volume Recognizer - Structure Info gathered from: the NetBSD disklabel section 5 man page */
#define NETBSD_MAXPARTITIONS 22
typedef struct NetBSD_disklabel {
uint32 d_magic; /* the magic number */
uint16 d_type; /* drive type */
uint16 d_subtype; /* controller/d_type specific */
char d_typename[16]; /* type name, e.g. "eagle" */
/*
* d_packname contains the pack identifier and is returned when
* the disklabel is read off the disk or in-core copy.
* d_boot0 is the (optional) name of the primary (block 0) bootstrap
* as found in /mdec. This is returned when using
* getdiskbyname(3) to retrieve the values from /etc/disktab.
*/
char d_packname[16]; /* pack identifier */
/* disk geometry: */
uint32 d_secsize; /* # of bytes per sector */
uint32 d_nsectors; /* # of data sectors per track */
uint32 d_ntracks; /* # of tracks per cylinder */
uint32 d_ncylinders; /* # of data cylinders per unit */
uint32 d_secpercyl; /* # of data sectors per cylinder */
uint32 d_secperunit; /* # of data sectors per unit */
/*
* Spares (bad sector replacements) below
* are not counted in d_nsectors or d_secpercyl.
* Spare sectors are assumed to be physical sectors
* which occupy space at the end of each track and/or cylinder.
*/
uint16 d_sparespertrack; /* # of spare sectors per track */
uint16 d_sparespercyl; /* # of spare sectors per cylinder */
/*
* Alternate cylinders include maintenance, replacement,
* configuration description areas, etc.
*/
uint32 d_acylinders; /* # of alt. cylinders per unit */
/* hardware characteristics: */
/*
* d_interleave, d_trackskew and d_cylskew describe perturbations
* in the media format used to compensate for a slow controller.
* Interleave is physical sector interleave, set up by the formatter
* or controller when formatting. When interleaving is in use,
* logically adjacent sectors are not physically contiguous,
* but instead are separated by some number of sectors.
* It is specified as the ratio of physical sectors traversed
* per logical sector. Thus an interleave of 1:1 implies contiguous
* layout, while 2:1 implies that logical sector 0 is separated
* by one sector from logical sector 1.
* d_trackskew is the offset of sector 0 on track N
* relative to sector 0 on track N-1 on the same cylinder.
* Finally, d_cylskew is the offset of sector 0 on cylinder N
* relative to sector 0 on cylinder N-1.
*/
uint16 d_rpm; /* rotational speed */
uint16 d_interleave; /* hardware sector interleave */
uint16 d_trackskew; /* sector 0 skew, per track */
uint16 d_cylskew; /* sector 0 skew, per cylinder */
uint32 d_headswitch; /* head swith time, usec */
uint32 d_trkseek; /* track-to-track seek, msec */
uint32 d_flags; /* generic flags */
#define NDDATA 5
uint32 d_drivedata[NDDATA]; /* drive-type specific information */
#define NSPARE 5
uint32 d_spare[NSPARE]; /* reserved for future use */
uint32 d_magic2; /* the magic number (again) */
uint16 d_checksum; /* xor of data incl. partitions */
/* filesystem and partition information: */
uint16 d_npartitions; /* number of partitions in following */
uint32 d_bbsize; /* size of boot area at sn0, bytes */
uint32 d_sbsize; /* max size of fs superblock, bytes */
struct { /* the partition table */
uint32 p_size; /* number of sectors in partition */
uint32 p_offset; /* starting sector */
uint32 p_fsize; /* filesystem basic fragment size */
uint8 p_fstype; /* filesystem type, see below */
uint8 p_frag; /* filesystem fragments per block */
union {
uint16 cpg; /* UFS: FS cylinders per group */
uint16 sgs; /* LFS: FS segment shift */
} __partition_u1;
#define p_cpg __partition_ul.cpg
#define p_sgs __partition_ul.sgs
} d_partitions[NETBSD_MAXPARTITIONS];/* actually may be more */
} NetBSD_disklabel;
static t_offset get_NetBSD_filesystem_size (UNIT *uptr, uint32 physsectsz, t_bool *readonly)
{
DEVICE *dptr;
t_addr saved_capac;
struct disk_context *ctx = (struct disk_context *)uptr->disk_ctx;
t_addr temp_capac = (sim_toffset_64 ? (t_addr)0xFFFFFFFFu : (t_addr)0x7FFFFFFFu); /* Make sure we can access the largest sector */
uint8 sector_buf[512];
NetBSD_disklabel *Label = (NetBSD_disklabel *)(&sector_buf[64]);
t_offset ret_val = (t_offset)-1;
uint16 i = sizeof (NetBSD_disklabel);
uint32 max_lbn = 0, max_lbn_partnum = 0;
t_seccnt sects_read;
uint16 sum = 0;
uint16 *pdata;
if ((dptr = find_dev_from_unit (uptr)) == NULL)
return ret_val;
saved_capac = uptr->capac;
uptr->capac = temp_capac;
if ((_DEC_rdsect (uptr, 0, (uint8 *)sector_buf, &sects_read, 512 / ctx->sector_size, physsectsz)) ||
(sects_read != (512 / ctx->sector_size)))
goto Return_Cleanup;
/* Confirm the Label magic numbers */
if ((Label->d_magic != BSD_DISKMAGIC) ||
(Label->d_magic2 != BSD_DISKMAGIC))
goto Return_Cleanup;
/* Verify the label checksum */
if (Label->d_npartitions > NETBSD_MAXPARTITIONS)
goto Return_Cleanup;
pdata = (uint16 *)Label;
for (sum = 0, pdata = (uint16 *)Label; pdata < (uint16 *)&Label->d_partitions[Label->d_npartitions]; pdata++)
sum ^= *pdata;
if (sum != 0)
goto Return_Cleanup;
/* Walk through the partitions */
for (i = 0; i < Label->d_npartitions; i++) {
uint32 end_lbn = Label->d_partitions[i].p_offset + Label->d_partitions[i].p_size;
if (end_lbn > max_lbn) {
max_lbn = end_lbn;
max_lbn_partnum = i;
}
}
sim_messagef (SCPE_OK, "%s: '%s' Contains NET/Open BSD partitions\n", sim_uname (uptr), uptr->filename);
sim_messagef (SCPE_OK, "Partition with highest sector: %c, Sectors On Disk: %u\n", 'a' + max_lbn_partnum, max_lbn);
ret_val = ((t_offset)max_lbn) * 512;
Return_Cleanup:
uptr->capac = saved_capac;
if (readonly)
*readonly = sim_disk_wrp (uptr);
return ret_val;
}
#pragma pack(push,1)
/*
* The first logical block of device cluster 1 is either:
@@ -2272,6 +2563,8 @@ static FILESYSTEM_CHECK checks[] = {
&get_ultrix_filesystem_size,
&get_iso9660_filesystem_size,
&get_rsts_filesystem_size,
&get_BSD_211_filesystem_size,
&get_NetBSD_filesystem_size,
&get_rt11_filesystem_size, /* This should be the last entry
in the table to reduce the
possibility of matching an RT-11