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DISK, TAPE: Add optional library specific DEVICE context structure

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- add disk and tape library initialization routines
- cleanup snprintf arguments
- truncate disk container trailing zero sectors when zapping
This commit is contained in:
Mark Pizzolato 2021-09-20 12:28:11 -07:00
parent 2834bfb1f9
commit feec1da242
6 changed files with 66 additions and 27 deletions
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2
scp.c
View file

@ -2779,6 +2779,8 @@ sim_on_inherit = sim_switches & SWMASK ('O'); /* -o means inherit on s
sim_init_sock (); /* init socket capabilities */
AIO_INIT; /* init Asynch I/O */
sim_finit (); /* init fio package */
sim_disk_init (); /* init disk package */
sim_tape_init (); /* init tape package */
for (i = 0; cmd_table[i].name; i++) {
size_t alias_len = strlen (cmd_table[i].name);
char *cmd_name = (char *)calloc (1 + alias_len, sizeof (*cmd_name));

1
sim_defs.h
View file

@ -521,6 +521,7 @@ struct DEVICE {
void *help_ctx; /* Context available to help routines */
const char *(*description)(DEVICE *dptr); /* Device Description */
BRKTYPTAB *brk_types; /* Breakpoint types */
void *type_ctx; /* Device Type/Library Context */
};
/* Device flags */

41
sim_disk.c
View file

@ -100,6 +100,7 @@ struct simh_disk_footer {
uint32 TransferElementSize;
uint8 CreationTime[28]; /* Result of ctime() */
uint8 FooterVersion; /* Initially 0 */
#define FOOTER_VERSION 0
uint8 AccessFormat; /* 1 - SIMH, 2 - RAW */
uint8 Reserved[382]; /* Currently unused */
uint32 Checksum; /* CRC32 of the prior 508 bytes */
@ -2101,6 +2102,8 @@ uptr->capac = saved_capac;
return ret_val;
}
t_offset pseudo_filesystem_size = 0; /* Dummy file system check return used during testing */
typedef t_offset (*FILESYSTEM_CHECK)(UNIT *uptr, uint32);
static t_offset get_filesystem_size (UNIT *uptr)
@ -2122,6 +2125,9 @@ uint32 saved_sector_size = ctx->sector_size;
t_offset ret_val = (t_offset)-1;
int i;
if (pseudo_filesystem_size != 0) /* Dummy file system size mechanism? */
return pseudo_filesystem_size;
for (i = 0; checks[i] != NULL; i++)
if ((ret_val = checks[i] (uptr, 0)) != (t_offset)-1)
return ret_val;
@ -2185,6 +2191,7 @@ switch (DK_GET_FMT (uptr)) { /* case on format */
/* Construct a pseudo simh disk footer*/
memcpy (f->Signature, "simh", 4);
f->FooterVersion = FOOTER_VERSION;
memset (f->DriveType, 0, sizeof (f->DriveType));
strlcpy ((char *)f->DriveType, sim_vhd_disk_get_dtype (uptr->fileref, &f->SectorSize, &f->TransferElementSize, (char *)f->CreatingSimulator, &creation_time), sizeof (f->DriveType));
f->SectorSize = NtoHl (f->SectorSize);
@ -2260,6 +2267,7 @@ f = (struct simh_disk_footer *)calloc (1, sizeof (*f));
f->AccessFormat = DK_GET_FMT (uptr);
total_sectors = (((t_offset)uptr->capac) * ctx->capac_factor * ((dptr->flags & DEV_SECTORS) ? 512 : 1)) / ctx->sector_size;
memcpy (f->Signature, "simh", 4);
f->FooterVersion = FOOTER_VERSION;
memset (f->CreatingSimulator, 0, sizeof (f->CreatingSimulator));
strlcpy ((char *)f->CreatingSimulator, sim_name, sizeof (f->CreatingSimulator));
memset (f->DriveType, 0, sizeof (f->DriveType));
@ -2658,8 +2666,7 @@ if ((DK_GET_FMT (uptr) == DKUF_F_VHD) || (ctx->footer)) {
if (drivetypes == NULL) /* No Autosize */
r = sim_messagef (SCPE_OPENERR, "%s: Cannot attach %s container to %s unit - Autosizing disk disabled\n", sim_uname (uptr), container_dtype, dtype);
else {
cmd[sizeof (cmd) - 1] = '\0';
snprintf (cmd, sizeof (cmd) - 1, "%s %s", sim_uname (uptr), container_dtype);
snprintf (cmd, sizeof (cmd), "%s %s", sim_uname (uptr), container_dtype);
r = set_cmd (0, cmd);
if (r != SCPE_OK) {
r = sim_messagef (r, "%s: Cannot set to drive type %s\n", sim_uname (uptr), container_dtype);
@ -2825,7 +2832,7 @@ filesystem_size = get_filesystem_size (uptr);
container_size = sim_disk_size (uptr);
current_unit_size = ((t_offset)uptr->capac)*ctx->capac_factor*((dptr->flags & DEV_SECTORS) ? 512 : 1);
if (container_size && (container_size != (t_offset)-1)) {
if (dontchangecapac) {
if (dontchangecapac) { /* autosize by changing drive type */
t_addr saved_capac = uptr->capac;
if (drivetypes != NULL) {
@ -6014,6 +6021,11 @@ return WriteVirtualDiskSectors(hVHD, buf, sects, sectswritten, ctx->sector_size,
}
#endif
t_stat sim_disk_init (void)
{
return SCPE_OK;
}
/*
* Zap Type command to remove incorrectly autosize information that
* may have been recorded at the end of a disk container file
@ -6057,7 +6069,24 @@ if (info->flag) { /* zap type */
(sizeof (*f) == sim_fread (f, 1, sizeof (*f), container))) {
if ((memcmp (f->Signature, "simh", 4) == 0) &&
(f->Checksum == NtoHl (eth_crc32 (0, f, sizeof (*f) - sizeof (f->Checksum))))) {
(void)sim_set_fsize (container, (t_addr)(container_size - sizeof (*f)));
uint8 *sector_data;
uint8 *zero_sector;
size_t sector_size = NtoHl (f->SectorSize);
sector_data = (uint8 *)malloc (sector_size * sizeof (*sector_data));
zero_sector = (uint8 *)calloc (sector_size, sizeof (*sector_data));
/* Chop off the disk footer and trailing zero sectors */
container_size -= sizeof (*f);
while (container_size > 0) {
if ((sim_fseeko (container, container_size - sector_size, SEEK_SET) != 0) ||
(sector_size != sim_fread (sector_data, 1, sector_size, container)) ||
(0 != memcmp (sector_data, zero_sector, sector_size)))
break;
container_size -= sector_size;
}
free (sector_data);
free (zero_sector);
(void)sim_set_fsize (container, (t_addr)container_size);
fclose (container);
info->stat = sim_messagef (SCPE_OK, "Disk Type Removed from container '%s'\n", FullPath);
return;
@ -6285,10 +6314,10 @@ SIM_TEST_INIT;
for (x = 0; xfr_size[x] != 0; x++) {
for (f = 0; fmt[f] != 0; f++) {
for (s = 0; sect_size[s] != 0; s++) {
snprintf (filename, sizeof (filename) - 1, "Test-%u-%u.%s", sect_size[s], xfr_size[x], fmt[f]);
snprintf (filename, sizeof (filename), "Test-%u-%u.%s", sect_size[s], xfr_size[x], fmt[f]);
if ((f > 0) && (strcmp (fmt[f], "VHD") == 0) && (strcmp (fmt[f - 1], "VHD") == 0)) { /* Second VHD is Fixed */
sim_switches |= SWMASK('X');
snprintf (filename, sizeof (filename) - 1, "Test-%u-%u-Fixed.%s", sect_size[s], xfr_size[x], fmt[f]);
snprintf (filename, sizeof (filename), "Test-%u-%u-Fixed.%s", sect_size[s], xfr_size[x], fmt[f]);
}
else
sim_switches = saved_switches;

1
sim_disk.h
View file

@ -67,6 +67,7 @@ typedef void (*DISK_PCALLBACK)(UNIT *unit, t_stat status);
/* Prototypes */
t_stat sim_disk_init (void);
t_stat sim_disk_attach (UNIT *uptr,
const char *cptr,
size_t memory_sector_size, /* memory footprint of sector data */

5
sim_tape.c
View file

@ -3838,6 +3838,11 @@ if (DEV_TYPE(dptr) != DEV_TAPE)
return sim_add_debug_flags (dptr, tape_debug);
}
t_stat sim_tape_init (void)
{
return SCPE_OK;
}
static t_bool p7b_parity_inited = FALSE;
static uint8 p7b_odd_parity[64];
static uint8 p7b_even_parity[64];

1
sim_tape.h
View file

@ -179,6 +179,7 @@ typedef void (*TAPE_PCALLBACK)(UNIT *unit, t_stat status);
/* Prototypes */
t_stat sim_tape_init (void);
t_stat sim_tape_attach_ex (UNIT *uptr, const char *cptr, uint32 dbit, int completion_delay);
t_stat sim_tape_attach (UNIT *uptr, CONST char *cptr);
t_stat sim_tape_detach (UNIT *uptr);