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diff --git a/lkm/vinum/vinum.c b/lkm/vinum/vinum.c
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+/*-
+ * 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: vinum.c,v 1.19 1998/08/13 05:24:02 grog Exp grog $
+ */
+
+#define STATIC /* nothing while we're testing XXX */
+
+#define REALLYKERNEL
+#include "vinumhdr.h"
+#include "sys/sysproto.h" /* for sync(2) */
+#ifdef DEBUG
+#include <sys/reboot.h>
+int debug = 0;
+#endif
+
+/* pointer to ioctl p parameter, to save passing it around */
+struct proc *myproc;
+
+#if __FreeBSD__ < 3
+STATIC struct cdevsw vinum_cdevsw;
+STATIC struct bdevsw vinum_bdevsw =
+{
+ vinumopen, vinumclose, vinumstrategy, vinumioctl,
+ vinumdump, vinumsize, 0,
+ "vinum", &vinum_cdevsw, -1
+};
+#else /* goodbye, bdevsw */
+STATIC struct cdevsw vinum_cdevsw =
+{
+ vinumopen, vinumclose, vinumread, vinumwrite,
+ vinumioctl, nostop, nullreset, nodevtotty,
+ seltrue, nommap, vinumstrategy, "vinum",
+ NULL, -1, vinumdump, vinumsize,
+ D_DISK, 0, -1
+};
+#endif
+
+/* Called by main() during pseudo-device attachment. */
+STATIC void vinumattach(void *);
+
+STATIC void vinumgetdisklabel(dev_t);
+void vinum_scandisk(void);
+int vinum_inactive(void);
+void free_vinum(int);
+
+#if __FreeBSD__ >= 3
+/* Why aren't these declared anywhere? XXX */
+int setjmp(jmp_buf);
+void longjmp(jmp_buf, int);
+#endif
+
+extern jmp_buf command_fail; /* return here if config fails */
+
+struct _vinum_conf vinum_conf; /* configuration information */
+
+STATIC int vinum_devsw_installed = 0;
+
+/*
+ * Called by main() during pseudo-device attachment. All we need
+ * to do is allocate enough space for devices to be configured later, and
+ * add devsw entries.
+ */
+void
+vinumattach(void *dummy)
+{
+ BROKEN_GDB;
+ char *buf; /* pointer to temporary buffer */
+ struct _ioctl_reply *ioctl_reply; /* struct to return */
+ struct uio uio;
+ struct iovec iovec;
+
+ /* modload should prevent multiple loads, so this is worth a panic */
+ if ((vinum_conf.flags & VF_LOADED) != NULL)
+ panic("vinum: already loaded");
+
+ printf("vinum: loaded\n");
+ vinum_conf.flags |= VF_LOADED; /* we're loaded now */
+
+ /* We don't have a p pointer here, so take it from curproc */
+ myproc = curproc;
+#if __FreeBSD__ < 3
+ bdevsw_add_generic(BDEV_MAJOR, CDEV_MAJOR, &vinum_bdevsw);
+#else
+ cdevsw_add_generic(BDEV_MAJOR, CDEV_MAJOR, &vinum_cdevsw);
+#endif
+#ifdef DEVFS
+#error DEVFS not finished yet
+#endif
+
+ uio.uio_iov = &iovec;
+ uio.uio_iovcnt = 1; /* just one buffer */
+ uio.uio_offset = 0; /* start at the beginning */
+ uio.uio_resid = 512; /* one sector */
+ uio.uio_segflg = UIO_SYSSPACE; /* we're in system space */
+ uio.uio_rw = UIO_READ; /* do we need this? */
+ uio.uio_procp = curproc; /* do it for our own process */
+
+ iovec.iov_len = 512;
+ buf = (char *) Malloc(iovec.iov_len); /* get a buffer */
+ CHECKALLOC(buf, "vinum: no memory\n"); /* can't get 512 bytes? */
+ iovec.iov_base = buf; /* read into buf */
+
+ /* allocate space: drives... */
+ DRIVE = (struct drive *) Malloc(sizeof(struct drive) * INITIAL_DRIVES);
+ CHECKALLOC(DRIVE, "vinum: no memory\n");
+ vinum_conf.drives_allocated = INITIAL_DRIVES; /* number of drive slots allocated */
+ vinum_conf.drives_used = 0; /* and number in use */
+
+ /* volumes, ... */
+ VOL = (struct volume *) Malloc(sizeof(struct volume) * INITIAL_VOLUMES);
+ CHECKALLOC(VOL, "vinum: no memory\n");
+ vinum_conf.volumes_allocated = INITIAL_VOLUMES; /* number of volume slots allocated */
+ vinum_conf.volumes_used = 0; /* and number in use */
+
+ /* plexes, ... */
+ PLEX = (struct plex *) Malloc(sizeof(struct plex) * INITIAL_PLEXES);
+ CHECKALLOC(PLEX, "vinum: no memory\n");
+ vinum_conf.plexes_allocated = INITIAL_PLEXES; /* number of plex slots allocated */
+ vinum_conf.plexes_used = 0; /* and number in use */
+
+ /* and subdisks */
+ SD = (struct sd *) Malloc(sizeof(struct sd) * INITIAL_SUBDISKS);
+ CHECKALLOC(SD, "vinum: no memory\n");
+ vinum_conf.subdisks_allocated = INITIAL_SUBDISKS; /* number of sd slots allocated */
+ vinum_conf.subdisks_used = 0; /* and number in use */
+
+ ioctl_reply = NULL; /* no reply on longjmp */
+}
+
+
+#ifdef ACTUALLY_LKM_NOT_KERNEL /* stuff for LKMs */
+
+/* Check if we have anything open. If so, return 0 (not inactive),
+ * otherwise 1 (inactive) */
+int
+vinum_inactive(void)
+{
+ BROKEN_GDB;
+ int i;
+ int can_do = 1; /* assume we can do it */
+
+ lock_config();
+ for (i = 0; i < vinum_conf.volumes_used; i++) {
+ if (VOL[i].pid != NULL) { /* volume is open */
+ can_do = 0;
+ break;
+ }
+ }
+ unlock_config();
+ return can_do;
+}
+
+/* Free all structures.
+ * If cleardrive is 0, save the configuration; otherwise
+ * remove the configuration from the drive.
+ *
+ * Before coming here, ensure that no volumes are open.
+ */
+void
+free_vinum(int cleardrive)
+{
+ BROKEN_GDB;
+ int i;
+
+ if (cleardrive) {
+ for (i = 0; i < vinum_conf.drives_used; i++)
+ remove_drive(i); /* remove the drive */
+ } else { /* keep the config */
+ save_config();
+ if (DRIVE != NULL) {
+ for (i = 0; i < vinum_conf.drives_used; i++)
+ free_drive(&DRIVE[i]); /* close files and things */
+ Free(DRIVE);
+ }
+ }
+ if (SD != NULL)
+ Free(SD);
+ if (PLEX != NULL) {
+ for (i = 0; i < vinum_conf.plexes_used; i++) {
+ struct plex *plex = &vinum_conf.plex[i];
+
+ if (plex->state != plex_unallocated) { /* we have real data there */
+ if (plex->sdnos)
+ Free(plex->sdnos);
+ if (plex->unmapped_regions)
+ Free(plex->unmapped_region);
+ if (plex->defective_regions)
+ Free(plex->defective_region);
+ }
+ }
+ Free(PLEX);
+ }
+ if (VOL != NULL)
+ Free(VOL);
+ bzero(&vinum_conf, sizeof(vinum_conf));
+}
+
+MOD_MISC(vinum);
+
+/*
+ * Function called when loading the driver.
+ */
+STATIC int
+vinum_load(struct lkm_table *lkmtp, int cmd)
+{
+ BROKEN_GDB;
+/* Debugger ("vinum_load"); */
+ vinumattach(NULL);
+ return 0; /* OK */
+}
+
+/*
+ * Function called when unloading the driver.
+ */
+STATIC int
+vinum_unload(struct lkm_table *lkmtp, int cmd)
+{
+ BROKEN_GDB;
+ if (vinum_inactive()) { /* is anything open? */
+ struct sync_args dummyarg =
+ {0};
+#if __FreeBSD__ < 3
+ int retval;
+#endif
+
+ printf("vinum: unloaded\n");
+#if __FreeBSD__ < 3
+ sync(curproc, &dummyarg, &retval); /* write out buffers */
+#else
+ sync(curproc, &dummyarg); /* write out buffers */
+#endif
+ free_vinum(0); /* no: clean up */
+#if __FreeBSD__ < 3
+ bdevsw[BDEV_MAJOR] = NULL; /* clear bdevsw */
+#endif
+ cdevsw[CDEV_MAJOR] = NULL; /* and cdevsw */
+ return 0;
+ } else
+ return EBUSY;
+}
+
+/*
+ * Dispatcher function for the module (load/unload/stat).
+ */
+int
+vinum_mod(struct lkm_table *lkmtp, int cmd, int ver)
+{
+ BROKEN_GDB;
+ MOD_DISPATCH(vinum, /* module name */
+ lkmtp, /* LKM table */
+ cmd, /* command */
+ ver,
+ vinum_load, /* load with this function */
+ vinum_unload, /* and unload with this */
+ lkm_nullcmd);
+}
+
+#else /* not LKM */
+#error "This driver must be compiled as a loadable kernel module"
+#endif /* LKM */
+
+/* ARGSUSED */
+/* Open a vinum object
+ * At the moment, we only open volumes and the
+ * super device. It's a nice concept to be
+ * able to open drives, subdisks and plexes, but
+ * I can't think what good it could be */
+int
+vinumopen(dev_t dev,
+ int flags,
+ int fmt,
+ struct proc *p)
+{
+ BROKEN_GDB;
+ int s; /* spl */
+ int error;
+ unsigned int index;
+ struct volume *vol;
+ struct plex *plex;
+ struct sd *sd;
+ struct devcode *device;
+
+ device = (struct devcode *) &dev;
+
+ error = 0;
+ /* First, decide what we're looking at */
+ switch (device->type) {
+ case VINUM_VOLUME_TYPE:
+ index = VOLNO(dev);
+ if (index >= vinum_conf.volumes_used)
+ return ENXIO; /* no such device */
+ vol = &VOL[index];
+
+ switch (vol->state) {
+ case volume_unallocated:
+ case volume_uninit:
+ return ENXIO;
+
+ case volume_up:
+ s = splhigh(); /* quick lock */
+ if (error)
+ return error;
+ if (vol->opencount == 0)
+ vol->openflags = flags; /* set our flags */
+ vol->opencount++;
+ vol->pid = p->p_pid; /* and say who we are (do we need this? XXX) */
+ splx(s);
+ return 0;
+
+ case volume_down:
+ return EIO;
+
+ default:
+ return EINVAL;
+ }
+
+ case VINUM_PLEX_TYPE:
+ if (VOLNO(dev) >= vinum_conf.volumes_used)
+ return ENXIO;
+ index = PLEXNO(dev); /* get plex index in vinum_conf */
+ if (index >= vinum_conf.plexes_used)
+ return ENXIO; /* no such device */
+ plex = &PLEX[index];
+
+ switch (plex->state) {
+ case plex_unallocated:
+ return EINVAL;
+
+ default:
+ s = splhigh();
+ if (plex->pid /* it's open already */
+ && (plex->pid != p->p_pid)) { /* and not by us, */
+ splx(s);
+ return EBUSY; /* one at a time, please */
+ }
+ plex->pid = p->p_pid; /* and say who we are (do we need this? XXX) */
+ splx(s);
+ return 0;
+ }
+
+ case VINUM_SD_TYPE:
+ if ((VOLNO(dev) >= vinum_conf.volumes_used) || /* no such volume */
+ (PLEXNO(dev) >= vinum_conf.plexes_used)) /* or no such plex */
+ return ENXIO; /* no such device */
+ index = SDNO(dev); /* get the subdisk number */
+ if (index >= vinum_conf.subdisks_used)
+ return ENXIO; /* no such device */
+ sd = &SD[index];
+
+ /* Opening a subdisk is always a special operation, so we
+ * ignore the state as long as it represents a real subdisk */
+ switch (sd->state) {
+ case sd_unallocated:
+ case sd_uninit:
+ return EINVAL;
+
+ default:
+ s = splhigh();
+ if (sd->pid /* it's open already */
+ && (sd->pid != p->p_pid)) { /* and not by us, */
+ splx(s);
+ return EBUSY; /* one at a time, please */
+ }
+ sd->pid = p->p_pid; /* and say who we are (do we need this? XXX) */
+ splx(s);
+ return 0;
+ }
+
+ case VINUM_DRIVE_TYPE:
+ default:
+ return ENODEV; /* don't know what to do with these */
+
+ case VINUM_SUPERDEV_TYPE:
+ if (p->p_ucred->cr_uid == 0) { /* root calling, */
+ vinum_conf.opencount++; /* one more opener */
+ return 0; /* no worries opening super dev */
+ } else
+ return EPERM; /* you can't do that! */
+ }
+}
+
+/* ARGSUSED */
+int
+vinumclose(dev_t dev,
+ int flags,
+ int fmt,
+ struct proc *p)
+{
+ BROKEN_GDB;
+ unsigned int index;
+ struct volume *vol;
+ struct plex *plex;
+ struct sd *sd;
+ struct devcode *device = (struct devcode *) &dev;
+
+ index = VOLNO(dev);
+ /* First, decide what we're looking at */
+ switch (device->type) {
+ case VINUM_VOLUME_TYPE:
+ if (index >= vinum_conf.volumes_used)
+ return ENXIO; /* no such device */
+ vol = &VOL[index];
+
+ switch (vol->state) {
+ case volume_unallocated:
+ case volume_uninit:
+ return ENXIO;
+
+ case volume_up:
+ vol->opencount = 0; /* reset our flags */
+ vol->pid = NULL; /* and forget who owned us */
+ return 0;
+
+ case volume_down:
+ return EIO;
+
+ default:
+ return EINVAL;
+ }
+
+ case VINUM_PLEX_TYPE:
+ if (VOLNO(dev) >= vinum_conf.volumes_used)
+ return ENXIO;
+ index = PLEXNO(dev); /* get plex index in vinum_conf */
+ if (index >= vinum_conf.plexes_used)
+ return ENXIO; /* no such device */
+ plex = &PLEX[index];
+ plex->pid = 0;
+ return 0;
+
+ case VINUM_SD_TYPE:
+ if ((VOLNO(dev) >= vinum_conf.volumes_used) || /* no such volume */
+ (PLEXNO(dev) >= vinum_conf.plexes_used)) /* or no such plex */
+ return ENXIO; /* no such device */
+ index = SDNO(dev); /* get the subdisk number */
+ if (index >= vinum_conf.subdisks_used)
+ return ENXIO; /* no such device */
+ sd = &SD[index];
+ sd->pid = 0;
+ return 0;
+
+ case VINUM_SUPERDEV_TYPE:
+ if (p->p_ucred->cr_uid == 0) /* root calling, */
+ vinum_conf.opencount--; /* one less opener */
+ return 0; /* no worries closing super dev */
+
+ case VINUM_DRIVE_TYPE:
+ default:
+ return ENODEV; /* don't know what to do with these */
+ }
+}
+
+/* size routine */
+int
+vinumsize(dev_t dev)
+{
+ BROKEN_GDB;
+ struct volume *vol;
+ int size;
+
+/* XXX This is bogus. We don't need to open
+ * a device to find its size */
+ vol = &VOL[VOLNO(dev)];
+
+ if (vol->state == volume_up)
+ size = vol->size;
+ else
+ return 0; /* err on the size of conservatism */
+
+
+ return size;
+}
+
+int
+vinumdump(dev_t dev)
+{
+ /* Not implemented. */
+ return ENXIO;
+}
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