291 lines
7.4 KiB
C
291 lines
7.4 KiB
C
/*-
|
|
* Copyright (c) 1997, 1998
|
|
* Nan Yang Computer Services Limited. All rights reserved.
|
|
*
|
|
* This software is distributed under the so-called ``Berkeley
|
|
* License'':
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Nan Yang Computer
|
|
* Services Limited.
|
|
* 4. Neither the name of the Company nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* This software is provided ``as is'', and any express or implied
|
|
* warranties, including, but not limited to, the implied warranties of
|
|
* merchantability and fitness for a particular purpose are disclaimed.
|
|
* In no event shall the company or contributors be liable for any
|
|
* direct, indirect, incidental, special, exemplary, or consequential
|
|
* damages (including, but not limited to, procurement of substitute
|
|
* goods or services; loss of use, data, or profits; or business
|
|
* interruption) however caused and on any theory of liability, whether
|
|
* in contract, strict liability, or tort (including negligence or
|
|
* otherwise) arising in any way out of the use of this software, even if
|
|
* advised of the possibility of such damage.
|
|
*
|
|
* $Id: vinumutil.c,v 1.10 1999/01/02 00:39:04 grog Exp grog $
|
|
*/
|
|
|
|
/* This file contains utility routines used both in kernel and user context */
|
|
|
|
#ifdef KERNEL
|
|
#include "opt_vinum.h"
|
|
#endif
|
|
#include <dev/vinum/vinumhdr.h>
|
|
#include <dev/vinum/statetexts.h>
|
|
#ifndef REALLYKERNEL
|
|
#include <stdio.h>
|
|
extern jmp_buf command_fail; /* return on a failed command */
|
|
#endif
|
|
|
|
static char numeric_state[32]; /* temporary buffer for ASCII conversions */
|
|
#define STATECOUNT(x) (sizeof (x##statetext) / sizeof (char *))
|
|
/* Return drive state as a string */
|
|
char *
|
|
drive_state(enum drivestate state)
|
|
{
|
|
if (((unsigned) state) >= STATECOUNT(drive)) {
|
|
sprintf(numeric_state, "Invalid state %d", (int) state);
|
|
return numeric_state;
|
|
} else
|
|
return drivestatetext[state];
|
|
}
|
|
|
|
/* Return volume state as a string */
|
|
char *
|
|
volume_state(enum volumestate state)
|
|
{
|
|
if (((unsigned) state) >= STATECOUNT(vol)) {
|
|
sprintf(numeric_state, "Invalid state %d", (int) state);
|
|
return numeric_state;
|
|
} else
|
|
return volstatetext[state];
|
|
}
|
|
|
|
/* Return plex state as a string */
|
|
char *
|
|
plex_state(enum plexstate state)
|
|
{
|
|
if (((unsigned) state) >= STATECOUNT(plex)) {
|
|
sprintf(numeric_state, "Invalid state %d", (int) state);
|
|
return numeric_state;
|
|
} else
|
|
return plexstatetext[state];
|
|
}
|
|
|
|
/* Return plex organization as a string */
|
|
char *
|
|
plex_org(enum plexorg org)
|
|
{
|
|
switch (org) {
|
|
case plex_disorg: /* disorganized */
|
|
return "disorg";
|
|
break;
|
|
|
|
case plex_concat: /* concatenated plex */
|
|
return "concat";
|
|
break;
|
|
|
|
case plex_striped: /* striped plex */
|
|
return "striped";
|
|
break;
|
|
|
|
case plex_raid5: /* RAID5 plex */
|
|
return "raid5";
|
|
break;
|
|
|
|
default:
|
|
sprintf(numeric_state, "Invalid org %d", (int) org);
|
|
return numeric_state;
|
|
}
|
|
}
|
|
|
|
/* Return sd state as a string */
|
|
char *
|
|
sd_state(enum sdstate state)
|
|
{
|
|
if (((unsigned) state) >= STATECOUNT(sd)) {
|
|
sprintf(numeric_state, "Invalid state %d", (int) state);
|
|
return numeric_state;
|
|
} else
|
|
return sdstatetext[state];
|
|
}
|
|
|
|
/* Now convert in the other direction */
|
|
/*
|
|
* These are currently used only internally,
|
|
* so we don't do too much error checking
|
|
*/
|
|
enum drivestate
|
|
DriveState(char *text)
|
|
{
|
|
int i;
|
|
for (i = 0; i < STATECOUNT(drive); i++)
|
|
if (strcmp(text, drivestatetext[i]) == 0) /* found it */
|
|
return (enum drivestate) i;
|
|
return -1;
|
|
}
|
|
|
|
enum sdstate
|
|
SdState(char *text)
|
|
{
|
|
int i;
|
|
for (i = 0; i < STATECOUNT(sd); i++)
|
|
if (strcmp(text, sdstatetext[i]) == 0) /* found it */
|
|
return (enum sdstate) i;
|
|
return -1;
|
|
}
|
|
|
|
enum plexstate
|
|
PlexState(char *text)
|
|
{
|
|
int i;
|
|
for (i = 0; i < STATECOUNT(plex); i++)
|
|
if (strcmp(text, plexstatetext[i]) == 0) /* found it */
|
|
return (enum plexstate) i;
|
|
return -1;
|
|
}
|
|
|
|
enum volumestate
|
|
VolState(char *text)
|
|
{
|
|
int i;
|
|
for (i = 0; i < STATECOUNT(vol); i++)
|
|
if (strcmp(text, volstatetext[i]) == 0) /* found it */
|
|
return (enum volstate) i;
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Take a number with an optional scale factor and convert
|
|
* it to a number of bytes.
|
|
*
|
|
* The scale factors are:
|
|
*
|
|
* b blocks (of 512 bytes)
|
|
* k kilobytes (1024 bytes)
|
|
* m megabytes (of 1024 * 1024 bytes)
|
|
* g gigabytes (of 1024 * 1024 * 1024 bytes)
|
|
*/
|
|
u_int64_t
|
|
sizespec(char *spec)
|
|
{
|
|
u_int64_t size;
|
|
char *s;
|
|
|
|
size = 0;
|
|
s = spec;
|
|
if ((*s >= '0') && (*s <= '9')) { /* it's numeric */
|
|
while ((*s >= '0') && (*s <= '9')) /* it's numeric */
|
|
size = size * 10 + *s++ - '0'; /* convert it */
|
|
switch (*s) {
|
|
case '\0':
|
|
return size;
|
|
|
|
case 'B':
|
|
case 'b':
|
|
return size * 512;
|
|
|
|
case 'K':
|
|
case 'k':
|
|
return size * 1024;
|
|
|
|
case 'M':
|
|
case 'm':
|
|
return size * 1024 * 1024;
|
|
|
|
case 'G':
|
|
case 'g':
|
|
return size * 1024 * 1024 * 1024;
|
|
}
|
|
}
|
|
#ifdef REALLYKERNEL
|
|
throw_rude_remark(EINVAL, "Invalid length specification: %s", spec);
|
|
#else
|
|
fprintf(stderr, "Invalid length specification: %s", spec);
|
|
longjmp(command_fail, -1);
|
|
#endif
|
|
/* NOTREACHED */
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Extract the volume number from a device number.
|
|
* Perform no checking.
|
|
*/
|
|
int
|
|
Volno(dev_t dev)
|
|
{
|
|
int x = (int) dev;
|
|
return (x & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT;
|
|
}
|
|
|
|
/*
|
|
* Extract a plex number from a device number.
|
|
* Don't check the major number, but check the
|
|
* type. Return -1 for invalid types.
|
|
*/
|
|
int
|
|
Plexno(dev_t dev)
|
|
{
|
|
int x = (int) dev;
|
|
|
|
switch (DEVTYPE(dev)) {
|
|
case VINUM_VOLUME_TYPE:
|
|
case VINUM_DRIVE_TYPE:
|
|
case VINUM_SUPERDEV_TYPE:
|
|
case VINUM_RAWSD_TYPE:
|
|
return -1;
|
|
|
|
case VINUM_PLEX_TYPE:
|
|
case VINUM_SD_TYPE:
|
|
return VOL[Volno(x)].plex[(x >> VINUM_PLEX_SHIFT) & (MASK(VINUM_PLEX_WIDTH))];
|
|
|
|
case VINUM_RAWPLEX_TYPE:
|
|
return ((x & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT) /* low order 8 bits */
|
|
|((x >> VINUM_RAWPLEX_SHIFT)
|
|
& (MASK(VINUM_RAWPLEX_WIDTH)
|
|
<< (VINUM_VOL_SHIFT + VINUM_VOL_WIDTH))); /* upper 12 bits */
|
|
}
|
|
return 0; /* compiler paranoia */
|
|
}
|
|
|
|
/*
|
|
* Extract a subdisk number from a device number.
|
|
* Don't check the major number, but check the
|
|
* type. Return -1 for invalid types.
|
|
*/
|
|
int
|
|
Sdno(dev_t dev)
|
|
{
|
|
int x = (int) dev;
|
|
|
|
switch (DEVTYPE(dev)) {
|
|
case VINUM_VOLUME_TYPE:
|
|
case VINUM_DRIVE_TYPE:
|
|
case VINUM_SUPERDEV_TYPE:
|
|
case VINUM_PLEX_TYPE:
|
|
case VINUM_RAWPLEX_TYPE:
|
|
return -1;
|
|
|
|
case VINUM_SD_TYPE:
|
|
return PLEX[Plexno(x)].sdnos[(x >> VINUM_SD_SHIFT) & (MASK(VINUM_SD_WIDTH))];
|
|
|
|
case VINUM_RAWSD_TYPE:
|
|
return ((x & MASK(VINUM_VOL_WIDTH)) >> VINUM_VOL_SHIFT) /* low order 8 bits */
|
|
|((x >> VINUM_RAWPLEX_SHIFT) & (MASK(VINUM_RAWPLEX_WIDTH)
|
|
<< (VINUM_VOL_SHIFT + VINUM_VOL_WIDTH))); /* upper 12 bits */
|
|
}
|
|
return -1; /* compiler paranoia */
|
|
}
|