/*
- * An implementation of a loadable kernel mode driver providing
- * multiple kernel/user space bidirectional communications links.
+ * An implementation of a loadable kernel mode driver providing
+ * multiple kernel/user space bidirectional communications links.
*
- * Author: Alan Cox <alan@cymru.net>
+ * Author: Alan Cox <alan@cymru.net>
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
*
* Adapted to become the Linux 2.0 Coda pseudo device
* Peter Braam <braam@maths.ox.ac.uk>
* Copyright (c) 1999 Stelias Computing, Inc.
* (authors {pschwan,braam}@stelias.com)
* Copyright (C) 1999 Seagate Technology, Inc.
+ * Copyright (C) 2001 Cluster File Systems, Inc.
*
*
*/
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/major.h>
+#include <linux/kmod.h> /* for request_module() */
#include <linux/sched.h>
#include <linux/lp.h>
-#include <linux/malloc.h>
+#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/fcntl.h>
#include <linux/delay.h>
#include <linux/obd_class.h>
static int obd_init_magic;
-int obd_print_entry = 1;
-int obd_debug_level = 4095;
+int obd_print_entry = 1;
+int obd_debug_level = ~0;
+long obd_memory = 0;
struct obd_device obd_dev[MAX_OBD_DEVICES];
struct list_head obd_types;
/* called when opening /dev/obdNNN */
static int obd_class_open(struct inode * inode, struct file * file)
{
- int dev;
+ int dev;
ENTRY;
- if (!inode)
- return -EINVAL;
- dev = MINOR(inode->i_rdev);
- if (dev >= MAX_OBD_DEVICES)
- return -ENODEV;
- obd_dev[dev].obd_refcnt++;
- CDEBUG(D_PSDEV, "Refcount now %d\n", obd_dev[dev].obd_refcnt);
+ if (!inode)
+ return -EINVAL;
+ dev = MINOR(inode->i_rdev);
+ if (dev >= MAX_OBD_DEVICES)
+ return -ENODEV;
+ obd_dev[dev].obd_refcnt++;
+ CDEBUG(D_PSDEV, "Dev %d refcount now %d\n", dev,
+ obd_dev[dev].obd_refcnt);
+
+ obd_dev[dev].obd_proc_entry =
+ proc_lustre_register_obd_device(&obd_dev[dev]);
MOD_INC_USE_COUNT;
EXIT;
/* called when closing /dev/obdNNN */
static int obd_class_release(struct inode * inode, struct file * file)
{
- int dev;
+ int dev;
ENTRY;
- if (!inode)
- return -EINVAL;
- dev = MINOR(inode->i_rdev);
- if (dev >= MAX_OBD_DEVICES)
- return -ENODEV;
- fsync_dev(inode->i_rdev);
- if (obd_dev[dev].obd_refcnt <= 0)
- printk(KERN_ALERT "obd_class_release: refcount(%d) <= 0\n",
- obd_dev[dev].obd_refcnt);
- obd_dev[dev].obd_refcnt--;
-
- CDEBUG(D_PSDEV, "Refcount now %d\n", obd_dev[dev].obd_refcnt);
+ if (!inode)
+ return -EINVAL;
+ dev = MINOR(inode->i_rdev);
+ if (dev >= MAX_OBD_DEVICES)
+ return -ENODEV;
+ fsync_dev(inode->i_rdev);
+ if (obd_dev[dev].obd_refcnt <= 0)
+ printk(KERN_ALERT __FUNCTION__ ": refcount(%d) <= 0\n",
+ obd_dev[dev].obd_refcnt);
+ obd_dev[dev].obd_refcnt--;
+
+ if (obd_dev[dev].obd_proc_entry && (obd_dev[dev].obd_refcnt==0))
+ proc_lustre_release_obd_device(&obd_dev[dev]);
+
+ CDEBUG(D_PSDEV, "Dev %d refcount now %d\n", dev,
+ obd_dev[dev].obd_refcnt);
MOD_DEC_USE_COUNT;
EXIT;
return 0;
}
-/* support function */
+/*
+ * support functions: we could use inter-module communication, but this
+ * is more portable to other OS's
+ */
+static struct obd_type *obd_search_type(char *nm)
+{
+ struct list_head *tmp;
+ struct obd_type *type;
+ CDEBUG(D_INFO, "SEARCH %s\n", nm);
+
+ tmp = &obd_types;
+ while ( (tmp = tmp->next) != &obd_types ) {
+ type = list_entry(tmp, struct obd_type, typ_chain);
+ CDEBUG(D_INFO, "TYP %s\n", type->typ_name);
+ if (strlen(type->typ_name) == strlen(nm) &&
+ strcmp(type->typ_name, nm) == 0 ) {
+ return type;
+ }
+ }
+ return NULL;
+}
+
static struct obd_type *obd_nm_to_type(char *nm)
{
- struct list_head *tmp;
- struct obd_type *type;
- CDEBUG(D_IOCTL, "SEARCH %s\n", nm);
-
- tmp = &obd_types;
- while ( (tmp = tmp->next) != &obd_types ) {
- type = list_entry(tmp, struct obd_type, typ_chain);
- CDEBUG(D_IOCTL, "TYP %s\n", type->typ_name);
- if (strlen(type->typ_name) == strlen(nm) &&
- strcmp(type->typ_name, nm) == 0 ) {
- return type;
+ struct obd_type *type = obd_search_type(nm);
+
+#ifdef CONFIG_KMOD
+ if ( !type ) {
+ if ( !request_module(nm) ) {
+ CDEBUG(D_PSDEV, "Loaded module '%s'\n", nm);
+ type = obd_search_type(nm);
+ } else {
+ CDEBUG(D_PSDEV, "Can't load module '%s'\n", nm);
}
}
- return NULL;
+#endif
+ return type;
}
static int getdata(int len, void **data)
{
- void *tmp = NULL;
-
- if (!len)
- return 0;
-
- CDEBUG(D_IOCTL, "getdata: len %d, add %p\n", len, *data);
-
- OBD_ALLOC(tmp, void *, len);
- if ( !tmp )
- return -ENOMEM;
-
- memset(tmp, 0, len);
- if ( copy_from_user(tmp, *data, len)) {
- OBD_FREE(tmp,len);
- return -EFAULT;
- }
- *data = tmp;
+ void *tmp = NULL;
+
+ if (!len) {
+ *data = NULL;
+ return 0;
+ }
+
+ CDEBUG(D_MALLOC, "len %d, add %p\n", len, *data);
+
+ OBD_ALLOC(tmp, void *, len);
+ if ( !tmp )
+ return -ENOMEM;
+
+ memset(tmp, 0, len);
+ if ( copy_from_user(tmp, *data, len)) {
+ OBD_FREE(tmp, len);
+ return -EFAULT;
+ }
+ *data = tmp;
- return 0;
+ return 0;
}
/* to control /dev/obdNNN */
static int obd_class_ioctl (struct inode * inode, struct file * filp,
- unsigned int cmd, unsigned long arg)
+ unsigned int cmd, unsigned long arg)
{
- int err, i_ino, dev;
- struct obd_device *obddev;
- struct obd_conn conn;
- long int cli_id; /* connect, disconnect */
-
- if (!inode)
- return -EINVAL;
-
- dev = MINOR(inode->i_rdev);
- if (dev > MAX_OBD_DEVICES)
- return -ENODEV;
- obddev = &obd_dev[dev];
- conn.oc_dev = obddev;
-
- switch (cmd) {
- case TCGETS:
- return -EINVAL;
- case OBD_IOC_ATTACH: {
- struct obd_type *type;
- struct oic_generic input;
-
- /* have we attached a type to this device */
- if ( obddev->obd_type || (obddev->obd_flags & OBD_ATTACHED) ){
- CDEBUG(D_IOCTL, "OBD Device %d already attached to type %s.\n", dev, obddev->obd_type->typ_name);
- return -EINVAL;
- }
-
- /* get data structures */
- err = copy_from_user(&input, (void *) arg, sizeof(input));
- if (err)
- return err;
-
- if ( (err = getdata(input.att_typelen + 1, &input.att_type)) )
- return err;
-
- /* find the type */
- err = -EINVAL;
- type = obd_nm_to_type(input.att_type);
- OBD_FREE(input.att_type, input.att_typelen + 1);
- if ( !type ) {
- printk("Unknown obd type dev %d\n", dev);
- return err;
- }
- obddev->obd_type = type;
-
- /* get the attach data */
- if ( (err = getdata(input.att_datalen, &input.att_data)) ) {
- return err;
- }
-
- INIT_LIST_HEAD(&obddev->obd_gen_clients);
- obddev->obd_multi_count = 0;
-
- CDEBUG(D_IOCTL, "Attach %d, datalen %d, type %s\n",
- dev, input.att_datalen, obddev->obd_type->typ_name);
- if (!obddev->obd_type->typ_ops || !OBP(obddev,attach)) {
- obddev->obd_flags |= OBD_ATTACHED;
- type->typ_refcnt++;
- MOD_INC_USE_COUNT;
- return 0;
- }
-
- /* do the attach */
- err = OBP(obddev,attach)(obddev,
- input.att_datalen, input.att_data);
- OBD_FREE(input.att_data, input.att_datalen);
-
- if ( err ) {
- obddev->obd_flags &= ~OBD_ATTACHED;
- obddev->obd_type = NULL;
- } else {
- obddev->obd_flags |= OBD_ATTACHED;
- type->typ_refcnt++;
- MOD_INC_USE_COUNT;
- }
- return err;
- }
-
- case OBD_IOC_DETACH: {
-
- if (obddev->obd_flags & OBD_SET_UP)
- return -EINVAL;
- if (! (obddev->obd_flags & OBD_ATTACHED) )
- return -EINVAL;
- if ( !list_empty(&obddev->obd_gen_clients) )
- return -EINVAL;
-
- obddev->obd_flags &= ~OBD_ATTACHED;
- obddev->obd_type->typ_refcnt--;
- obddev->obd_type = NULL;
- MOD_DEC_USE_COUNT;
- return 0;
- }
-
-
- case OBD_IOC_FORMAT: {
- struct ioc_format {
- int format_datalen;
- void *format_data;
- } input;
-
- /* have we attached a type to this device */
- if ( !obddev->obd_type ) {
- CDEBUG(D_IOCTL, "OBD Device %d has no type.\n", dev);
- return -EINVAL;
- }
+ struct obd_device *obddev;
+ /* NOTE this must be larger than any of the ioctl data structs */
+ char buf[1024];
+ void *tmp_buf = buf;
+ struct obd_conn conn;
+ int err, dev;
+ long int cli_id; /* connect, disconnect */
+
+ if (!inode) {
+ CDEBUG(D_IOCTL, "invalid inode\n");
+ return -EINVAL;
+ }
+
+ dev = MINOR(inode->i_rdev);
+ if (dev > MAX_OBD_DEVICES)
+ return -ENODEV;
+ obddev = &obd_dev[dev];
+ conn.oc_dev = obddev;
+
+ switch (cmd) {
+ case TCGETS:
+ return -EINVAL;
+ case OBD_IOC_ATTACH: {
+ struct obd_type *type;
+ struct oic_generic *input = tmp_buf;
+ char *nm;
+
+ ENTRY;
+ /* have we attached a type to this device */
+ if ( obddev->obd_type ||
+ (obddev->obd_flags & OBD_ATTACHED) ){
+ char *name;
+ if (obddev->obd_type->typ_name)
+ name = obddev->obd_type->typ_name;
+ else
+ name = "";
+ CDEBUG(D_IOCTL,
+ "OBD Device %d already attached to type %s.\n",
+ dev, name);
+ EXIT;
+ return -EBUSY;
+ }
+
+ /* get data structures */
+ err = copy_from_user(input, (void *)arg, sizeof(*input));
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ err = getdata(input->att_typelen + 1, &input->att_type);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ /* find the type */
+ nm = input->att_type;
+ type = obd_nm_to_type(nm);
+
+ OBD_FREE(input->att_type, input->att_typelen + 1);
+ if ( !type ) {
+ printk(__FUNCTION__ ": unknown obd type dev %d\n",
+ dev);
+ EXIT;
+ return -EINVAL;
+ }
+ obddev->obd_type = type;
+
+ /* get the attach data */
+ err = getdata(input->att_datalen, &input->att_data);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ INIT_LIST_HEAD(&obddev->obd_gen_clients);
+ obddev->obd_multi_count = 0;
+
+ CDEBUG(D_IOCTL, "Attach %d, datalen %d, type %s\n",
+ dev, input->att_datalen, obddev->obd_type->typ_name);
+ /* maybe we are done */
+ if ( !OBT(obddev) || !OBP(obddev, attach) ) {
+ obddev->obd_flags |= OBD_ATTACHED;
+ type->typ_refcnt++;
+ CDEBUG(D_PSDEV, "Dev %d refcount now %d\n", dev,
+ type->typ_refcnt);
+ if (input->att_data)
+ OBD_FREE(input->att_data, input->att_datalen);
+ MOD_INC_USE_COUNT;
+ EXIT;
+ return 0;
+ }
+
+ /* do the attach */
+ err = OBP(obddev, attach)(obddev, input->att_datalen,
+ input->att_data);
+ if (input->att_data)
+ OBD_FREE(input->att_data, input->att_datalen);
+
+ if ( err ) {
+ obddev->obd_flags &= ~OBD_ATTACHED;
+ obddev->obd_type = NULL;
+ EXIT;
+ } else {
+ obddev->obd_flags |= OBD_ATTACHED;
+ type->typ_refcnt++;
+ CDEBUG(D_PSDEV, "Dev %d refcount now %d\n", dev,
+ type->typ_refcnt);
+ MOD_INC_USE_COUNT;
+ EXIT;
+ }
+ return err;
+ }
+
+ case OBD_IOC_DETACH: {
+
+ ENTRY;
+ if (obddev->obd_flags & OBD_SET_UP) {
+ EXIT;
+ return -EBUSY;
+ }
+ if (! (obddev->obd_flags & OBD_ATTACHED) ) {
+ CDEBUG(D_IOCTL, "Device not attached\n");
+ EXIT;
+ return -ENODEV;
+ }
+ if ( !list_empty(&obddev->obd_gen_clients) ) {
+ CDEBUG(D_IOCTL, "Device has connected clients\n");
+ EXIT;
+ return -EBUSY;
+ }
+
+ CDEBUG(D_PSDEV, "Detach %d, type %s\n", dev,
+ obddev->obd_type->typ_name);
+ obddev->obd_flags &= ~OBD_ATTACHED;
+ obddev->obd_type->typ_refcnt--;
+ CDEBUG(D_PSDEV, "Dev %d refcount now %d\n", dev,
+ obddev->obd_type->typ_refcnt);
+ obddev->obd_type = NULL;
+ MOD_DEC_USE_COUNT;
+ EXIT;
+ return 0;
+ }
+
+ case OBD_IOC_SETUP: {
+ struct ioc_setup {
+ int setup_datalen;
+ int setup_rdev;
+ void *setup_data;
+ } *setup;
+
+ setup = tmp_buf;
+
+
+ ENTRY;
+ /* have we attached a type to this device */
+ if (!(obddev->obd_flags & OBD_ATTACHED)) {
+ CDEBUG(D_IOCTL, "Device not attached\n");
+ EXIT;
+ return -ENODEV;
+ }
+
+ /* has this been done already? */
+ if ( obddev->obd_flags & OBD_SET_UP ) {
+ CDEBUG(D_IOCTL, "Device %d already setup (type %s)\n",
+ dev, obddev->obd_type->typ_name);
+ EXIT;
+ return -EBUSY;
+ }
/* get main structure */
- err = copy_from_user(&input, (void *) arg, sizeof(input));
- if (err)
- return err;
-
- err = getdata(input.format_datalen, &input.format_data);
- if (err)
- return err;
-
- if (!obddev->obd_type->typ_ops ||
- !obddev->obd_type->typ_ops->o_format )
- return -EOPNOTSUPP;
-
- /* do the format */
- CDEBUG(D_IOCTL, "Format %d, type %s\n", dev,
- obddev->obd_type->typ_name);
- err = obddev->obd_type->typ_ops->o_format
- (obddev, input.format_datalen, input.format_data);
-
- OBD_FREE(input.format_data, input.format_datalen);
- return err;
- }
- case OBD_IOC_PARTITION: {
- struct ioc_part {
- int part_datalen;
- void *part_data;
- } input;
-
- /* have we attached a type to this device */
- if ( !obddev->obd_type ) {
- CDEBUG(D_IOCTL, "OBD Device %d has no type.\n", dev);
- return -EINVAL;
- }
-
- /* get main structure */
- err = copy_from_user(&input, (void *) arg, sizeof(input));
- if (err)
- return err;
-
- err = getdata(input.part_datalen, &input.part_data);
- if (err)
- return err;
-
- if (!obddev->obd_type->typ_ops ||
- !obddev->obd_type->typ_ops->o_partition )
- return -EOPNOTSUPP;
-
- /* do the partition */
- CDEBUG(D_IOCTL, "Partition %d, type %s\n", dev,
- obddev->obd_type->typ_name);
- err = obddev->obd_type->typ_ops->o_partition
- (obddev, input.part_datalen, input.part_data);
-
- OBD_FREE(input.part_data, input.part_datalen);
- return err;
- }
-
- case OBD_IOC_COPY: {
- struct ioc_mv_s mvdata;
- struct ioc_part {
- int part_datalen;
- void *part_data;
- } input;
- obdattr *srcoa, *tgtoa;
-
- if ( (!(obddev->obd_flags & OBD_SET_UP)) ||
- (!(obddev->obd_flags & OBD_ATTACHED))) {
- CDEBUG(D_IOCTL, "Device not attached or set up\n");
- return -EINVAL;
- }
-
- /* get main structure */
- err = copy_from_user(&input, (void *) arg, sizeof(input));
- if (err)
- return err;
-
-
- err = copy_from_user(&mvdata, input.part_data, sizeof(mvdata));
- if (err)
- return err;
-
- if (!obddev->obd_type->typ_ops ||
- !obddev->obd_type->typ_ops->o_copy )
- return -EOPNOTSUPP;
-
- /* do the partition */
- CDEBUG(D_IOCTL, "Copy %d, type %s src %ld tgt %ld\n", dev,
- obddev->obd_type->typ_name, mvdata.src, mvdata.tgt);
-
- conn.oc_id = mvdata.conn_id;
- srcoa = obd_oa_fromid(&conn, mvdata.src);
- if ( !srcoa )
- return -ENOENT;
- tgtoa = obd_oa_fromid(&conn, mvdata.tgt);
- if ( ! tgtoa ) {
- obd_free_oa(srcoa);
- return -ENOMEM;
- }
-
- err = obddev->obd_type->typ_ops->o_copy(&conn,srcoa, tgtoa);
-
- obd_free_oa(srcoa);
- obd_free_oa(tgtoa);
- return err;
- }
- case OBD_IOC_MIGR: {
- struct ioc_mv_s mvdata;
- struct ioc_part {
- int part_datalen;
- void *part_data;
- } input;
- obdattr *srcoa, *tgtoa;
-
- if ( (!(obddev->obd_flags & OBD_SET_UP)) ||
- (!(obddev->obd_flags & OBD_ATTACHED))) {
- CDEBUG(D_IOCTL, "Device not attached or set up\n");
- return -EINVAL;
- }
-
- /* get main structure */
- err = copy_from_user(&input, (void *) arg, sizeof(input));
- if (err)
- return err;
-
-
- CDEBUG(D_IOCTL, "Migrate copying %d\n", sizeof(mvdata));
- err = copy_from_user(&mvdata, input.part_data, sizeof(mvdata));
- if (err)
- return err;
-
- if (!obddev->obd_type->typ_ops ||
- !obddev->obd_type->typ_ops->o_copy )
- return -EOPNOTSUPP;
-
- /* do the partition */
- CDEBUG(D_IOCTL, "Migrate %d, type %s conn %d src %ld tgt %ld\n", dev,
- obddev->obd_type->typ_name, mvdata.conn_id, mvdata.src, mvdata.tgt);
-
-
- if ( ! (srcoa = obd_empty_oa()) )
- return -ENOMEM;
- if ( ! (tgtoa = obd_empty_oa()) ) {
- obd_free_oa(srcoa);
- return -ENOMEM;
- }
-
- srcoa->i_ino = mvdata.src;
- tgtoa->i_ino = mvdata.tgt;
-
- conn.oc_id = mvdata.conn_id;
-
- err = obddev->obd_type->typ_ops->o_migrate(&conn, tgtoa, srcoa);
-
- obd_free_oa(srcoa);
- obd_free_oa(tgtoa);
- return err;
- }
-
- case OBD_IOC_SETUP: {
- struct ioc_setup {
- int setup_datalen;
- void *setup_data;
- } input;
-
- /* have we attached a type to this device */
- if (!(obddev->obd_flags & OBD_ATTACHED)) {
- CDEBUG(D_IOCTL, "OBD Device %d has no type.\n", dev);
- return -EINVAL;
- }
-
- /* has this been done already? */
- if ( obddev->obd_flags & OBD_SET_UP ) {
- CDEBUG(D_IOCTL, "Device %d already setup (type %s)\n",
- dev, obddev->obd_type->typ_name);
- return -EINVAL;
- }
-
- /* get main structure */
- err = copy_from_user(&input, (void *) arg, sizeof(input));
- if (err)
- return err;
-
- err = getdata(input.setup_datalen, &input.setup_data);
- if (err)
- return err;
-
-
- /* do the setup */
- CDEBUG(D_IOCTL, "Setup %d, type %s\n", dev,
- obddev->obd_type->typ_name);
- if ( !obddev->obd_type->typ_ops ||
- !obddev->obd_type->typ_ops->o_setup ) {
- obddev->obd_flags |= OBD_SET_UP;
- return 0;
- }
-
- err = obddev->obd_type->typ_ops->o_setup
- (obddev, input.setup_datalen, input.setup_data);
-
- if ( err )
- obddev->obd_flags &= ~OBD_SET_UP;
- else {
- obddev->obd_type->typ_refcnt++;
- obddev->obd_flags |= OBD_SET_UP;
- }
- return err;
- }
- case OBD_IOC_CLEANUP: {
- int rc;
-
- /* has this minor been registered? */
- if (!obddev->obd_type)
- return -ENODEV;
-
- if ( !obddev->obd_type->typ_refcnt )
- printk("OBD_CLEANUP: refcount wrap!\n");
-
- if ( !obddev->obd_flags & OBD_SET_UP )
- return -EINVAL;
-
- if ( !obddev->obd_type->typ_ops->o_cleanup )
- goto cleanup_out;
-
- /* cleanup has no argument */
- rc = OBP(obddev, cleanup)(obddev);
- if ( rc )
- return rc;
-
- cleanup_out:
- obddev->obd_flags &= ~OBD_SET_UP;
- obddev->obd_type->typ_refcnt--;
- return 0;
- }
- case OBD_IOC_CONNECT:
- {
-
- if ( (!(obddev->obd_flags & OBD_SET_UP)) ||
- (!(obddev->obd_flags & OBD_ATTACHED))) {
- CDEBUG(D_IOCTL, "Device not attached or set up\n");
- return -EINVAL;
- }
-
-
- if (obddev->obd_type->typ_ops->o_connect(&conn))
- return -EINVAL;
-
- return copy_to_user((int *)arg, &conn.oc_id,
- sizeof(int));
- }
- case OBD_IOC_DISCONNECT:
- /* frees data structures */
- /* has this minor been registered? */
- if (!obddev->obd_type)
- return -ENODEV;
-
- get_user(cli_id, (int *) arg);
- conn.oc_id = cli_id;
-
- OBP(obddev, disconnect)(&conn);
- return 0;
-
- case OBD_IOC_SYNC: {
- /* sync doesn't need a connection ID, because it knows
- * what device it was called on, and can thus get the
- * superblock that it needs. */
- /* has this minor been registered? */
- if (!obddev->obd_type)
- return -ENODEV;
-
- if (!obddev->u.ext2.ext2_sb || !obddev->u.ext2.ext2_sb->s_dev) {
- CDEBUG(D_IOCTL, "fatal: device not initialized.\n");
- err = -EINVAL;
- } else {
- if ((err = fsync_dev(obddev->u.ext2.ext2_sb->s_dev)))
- CDEBUG(D_IOCTL, "sync: fsync_dev failure\n");
- else
- CDEBUG(D_IOCTL, "sync: success\n");
- }
-
- return put_user(err, (int *) arg);
- }
- case OBD_IOC_CREATE: {
- int err;
- struct oic_create_s foo;
-
- if ( copy_from_user(&foo, (const void *)arg, sizeof(foo)) )
- return -EFAULT;
-
- /* has this minor been registered? */
- if ( !(obddev->obd_flags & OBD_ATTACHED) ||
- !(obddev->obd_flags & OBD_SET_UP))
- return -ENODEV;
- conn.oc_id = foo.conn_id;
-
- i_ino = OBP(obddev, create)(&conn, foo.prealloc, &err);
+ err = copy_from_user(setup, (void *) arg, sizeof(*setup));
if (err) {
- CDEBUG(D_IOCTL, "create: obd_inode_new failure\n");
- /* 0 is the only error value */
- return put_user(0, (int *) arg);
+ EXIT;
+ return err;
}
- return put_user(i_ino, (int *) arg);
- }
- case OBD_IOC_DESTROY:
- {
- struct destroy_s {
- unsigned int conn_id;
- unsigned int ino;
- } destroy;
- obdattr *oa;
- int rc;
-
- if ( ! (oa = obd_empty_oa()) )
- return -ENOMEM;
-
- /* has this minor been registered? */
- if (!obddev->obd_type)
- return -ENODEV;
-
-
- copy_from_user(&destroy, (int *)arg, sizeof(struct destroy_s));
- if ( !obddev->obd_type ||
- !obddev->obd_type->typ_ops->o_destroy)
- return -EINVAL;
-
- oa->i_ino = destroy.ino;
- conn.oc_id = destroy.conn_id;
- rc = obddev->obd_type->typ_ops->o_destroy(&conn, oa);
- OBD_FREE(oa, sizeof(*oa));
- return rc;
- }
- case OBD_IOC_SETATTR:
- {
- struct oic_attr_s foo;
- obdattr *oa;
- int rc;
-
- if ( ! (oa = obd_empty_oa()) )
- return -ENOMEM;
-
- /* has this minor been registered? */
- if (!obddev->obd_type)
- return -ENODEV;
-
- rc = copy_from_user(&foo, (int *)arg, sizeof(foo));
- if (rc)
- return rc;
-
- if ( !obddev->obd_type ||
- !obddev->obd_type->typ_ops->o_setattr)
- return -EINVAL;
+ /* get the attach data */
+ err = getdata(setup->setup_datalen, &setup->setup_data);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+ obddev->obd_rdev = setup->setup_rdev;
+ obddev->obd_user_name = (char *)setup->setup_data;
+
+ /* do the setup */
+ if ( !OBT(obddev) || !OBP(obddev, setup) ) {
+ obddev->obd_type->typ_refcnt++;
+ CDEBUG(D_PSDEV, "Dev %d refcount now %d\n",
+ dev, obddev->obd_type->typ_refcnt);
+ if (setup->setup_data)
+ OBD_FREE(setup->setup_data,
+ setup->setup_datalen);
+ obddev->obd_flags |= OBD_SET_UP;
+ EXIT;
+ return 0;
+ }
+
+ CDEBUG(D_PSDEV, "Setup %d, type %s device %x, %s, len %d\n", dev,
+ obddev->obd_type->typ_name, setup->setup_rdev,
+ obddev->obd_user_name, setup->setup_datalen);
+
+ err = OBP(obddev, setup)(obddev, 0, NULL);
+
+ if ( err ) {
+ obddev->obd_flags &= ~OBD_SET_UP;
+ EXIT;
+ } else {
+ obddev->obd_type->typ_refcnt++;
+ CDEBUG(D_PSDEV, "Dev %d refcount now %d\n",
+ dev, obddev->obd_type->typ_refcnt);
+ obddev->obd_flags |= OBD_SET_UP;
+ EXIT;
+ }
+ // OBD_FREE(setup->setup_data, setup->setup_datalen);
+ return err;
+ }
+ case OBD_IOC_CLEANUP: {
+ ENTRY;
+ /* has this minor been registered? */
+ if (!obddev->obd_type) {
+ CDEBUG(D_IOCTL, "OBD Device %d has no type.\n", dev);
+ EXIT;
+ return -ENODEV;
+ }
+
+ if ( !obddev->obd_type->typ_refcnt ) {
+ CDEBUG(D_IOCTL, "dev %d has refcount (%d)!\n",
+ dev, obddev->obd_type->typ_refcnt);
+ EXIT;
+ return -EBUSY;
+ }
+
+ if ( (!(obddev->obd_flags & OBD_SET_UP)) ||
+ (!(obddev->obd_flags & OBD_ATTACHED))) {
+ CDEBUG(D_IOCTL, "device not attached or set up\n");
+ EXIT;
+ return -ENODEV;
+ }
+
+ if ( !OBT(obddev) || !OBP(obddev, cleanup) )
+ goto cleanup_out;
+
+ /* cleanup has no argument */
+ err = OBP(obddev, cleanup)(obddev);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ cleanup_out:
+ obddev->obd_flags &= ~OBD_SET_UP;
+ obddev->obd_type->typ_refcnt--;
+ CDEBUG(D_PSDEV, "Dev %d refcount now %d\n", dev,
+ obddev->obd_type->typ_refcnt);
+ EXIT;
+ return 0;
+ }
+ case OBD_IOC_CONNECT:
+ {
+ if ( (!(obddev->obd_flags & OBD_SET_UP)) ||
+ (!(obddev->obd_flags & OBD_ATTACHED))) {
+ CDEBUG(D_IOCTL, "Device not attached or set up\n");
+ return -ENODEV;
+ }
+
+ if ( !OBT(obddev) || !OBP(obddev, connect) )
+ return -EOPNOTSUPP;
+
+ err = OBP(obddev, connect)(&conn);
+ if ( err )
+ return err;
+
+ return copy_to_user((int *)arg, &conn.oc_id,
+ sizeof(uint32_t));
+ }
+ case OBD_IOC_DISCONNECT:
+ /* frees data structures */
+ /* has this minor been registered? */
+ if (!obddev->obd_type)
+ return -ENODEV;
+
+ get_user(cli_id, (int *) arg);
+ conn.oc_id = cli_id;
+
+ if ( !OBT(obddev) || !OBP(obddev, disconnect))
+ return -EOPNOTSUPP;
+
+ OBP(obddev, disconnect)(&conn);
+ return 0;
- oa->i_ino = foo.ino;
- inode_setattr(oa, &foo.iattr);
- conn.oc_id = foo.conn_id;
- rc = obddev->obd_type->typ_ops->o_setattr(&conn, oa);
- OBD_FREE(oa, sizeof(*oa));
- return rc;
- }
-
- case OBD_IOC_GETATTR:
- {
- int rc;
- struct oic_getattr {
- unsigned int conn_id;
- unsigned long ino;
- } foo;
- struct iattr iattr;
- obdattr *oa;
-
- rc = copy_from_user(&foo, (int *)arg, sizeof(foo));
- if (rc)
- return rc;
-
- conn.oc_id = foo.conn_id;
- oa = obd_oa_fromid(&conn, foo.ino);
- if ( !oa )
- return -ENOENT;
-
- inode_to_iattr(oa, &iattr);
- rc = copy_to_user((int *)arg, &iattr, sizeof(iattr));
- return rc;
- }
-
- case OBD_IOC_READ:
- {
- obdattr *oa = NULL;
- int rc;
- struct oic_rw_s rw_s; /* read, write ioctl str */
-
- rc = copy_from_user(&rw_s, (int *)arg, sizeof(rw_s));
- if ( rc )
- goto READ_OUT;
-
-
- conn.oc_id = rw_s.conn_id;
- if ( ! (oa = obd_oa_fromid(&conn, rw_s.id)) )
- return -ENOENT;
-
- rc = -EINVAL;
- if ( !obddev->obd_type->typ_ops ||
- !obddev->obd_type->typ_ops->o_read )
- goto READ_OUT;
-
- rc = obddev->obd_type->typ_ops->o_read
- (&conn, oa, rw_s.buf, &rw_s.count, rw_s.offset);
- if ( rc )
- goto READ_OUT;
-
- rc = copy_to_user((int*)arg, &rw_s.count, sizeof(rw_s.count));
-
- READ_OUT:
- if ( oa )
- OBD_FREE(oa, sizeof(*oa));
- return rc;
- }
-
- case OBD_IOC_WRITE: {
- obdattr *oa = NULL;
- int rc;
- struct oic_rw_s rw_s; /* read, write ioctl str */
-
- rc = copy_from_user(&rw_s, (int *)arg, sizeof(rw_s));
- if ( rc )
- goto WRITE_OUT;
-
- conn.oc_id = rw_s.conn_id;
- oa = obd_oa_fromid(&conn, rw_s.id);
- if ( !oa )
- return -ENOENT;
-
- rc = -EINVAL;
- if ( !obddev->obd_type->typ_ops ||
- !obddev->obd_type->typ_ops->o_write )
- goto WRITE_OUT;
-
- rc = obddev->obd_type->typ_ops->o_write
- (&conn, oa, rw_s.buf, &rw_s.count, rw_s.offset);
- if ( rc )
- goto WRITE_OUT;
-
- rc = copy_to_user((int*)arg, &rw_s.count, sizeof(rw_s.count));
-
- WRITE_OUT:
- OBD_FREE(oa, sizeof(*oa));
- return rc;
- }
- case OBD_IOC_PREALLOCATE: {
- struct oic_prealloc_s prealloc;
- int rc;
-
- /* has this minor been registered? */
- if (!obddev->obd_type)
- return -ENODEV;
-
-
- rc = copy_from_user(&prealloc, (int *)arg, sizeof(prealloc));
- if (rc)
- return -ENOMEM;
-
- if ( !(obddev->obd_flags & OBD_ATTACHED) ||
- !(obddev->obd_flags & OBD_SET_UP)) {
- CDEBUG(D_IOCTL, "fatal: device not initialized.\n");
- return -EINVAL;
- }
-
- if (!obddev->obd_type ||
- !obddev->obd_type->typ_ops->o_preallocate)
- return -EOPNOTSUPP;
- conn.oc_id = prealloc.cli_id;
- rc = obddev->obd_type->typ_ops->o_preallocate
- (&conn, &prealloc.alloc, prealloc.inodes);
- if ( rc )
- return rc;
-
- return copy_to_user((int *)arg, &prealloc, sizeof(prealloc));
- }
- case OBD_IOC_STATFS:
- {
- struct statfs *tmp;
- unsigned int conn_id;
- struct statfs buf;
- int rc;
-
- /* has this minor been registered? */
- if (!obddev->obd_type)
- return -ENODEV;
-
- tmp = (void *)arg + sizeof(unsigned int);
- get_user(conn_id, (int *) arg);
- if ( !obddev->obd_type ||
- !obddev->obd_type->typ_ops->o_statfs)
- return -EINVAL;
-
- conn.oc_id = conn_id;
- rc = obddev->obd_type->typ_ops->o_statfs(&conn, &buf);
- if ( rc )
- return rc;
- rc = copy_to_user(tmp, &buf, sizeof(buf));
- return rc;
-
- }
- default: {
- struct obd_type *type;
- struct oic_generic input;
- void *karg;
-
- /* get data structures */
- err = copy_from_user(&input, (void *) arg, sizeof(input));
- if (err) {
- EXIT;
- return err;
- }
-
- if ( (err = getdata(input.att_typelen + 1, &input.att_type))){
- EXIT;
- return err;
- }
-
- /* find the type */
- err = -EINVAL;
- type = obd_nm_to_type(input.att_type);
- OBD_FREE(input.att_type, input.att_typelen + 1);
- if ( !type ) {
- printk("Unknown obd type dev %d\n", dev);
- EXIT;
- return err;
- }
-
- if ( !type->typ_ops->o_iocontrol ) {
- EXIT;
- return -EINVAL;
- }
- conn.oc_id = input.att_connid;
-
- CDEBUG(D_IOCTL, "Calling ioctl %x for type %s, len %d\n",
- cmd, type->typ_name, input.att_datalen);
-
- /* get the generic data */
- karg = input.att_data;
- if ( (err = getdata(input.att_datalen, &karg)) ) {
- EXIT;
- return err;
- }
-
- err = type->typ_ops->o_iocontrol
- (cmd, &conn, input.att_datalen,
- karg, input.att_data);
- OBD_FREE(karg, input.att_datalen);
+ case OBD_IOC_DEC_USE_COUNT:
+ MOD_DEC_USE_COUNT;
+ return 0;
- EXIT;
- return err;
- }
- }
-}
+ case OBD_IOC_SYNC: {
+ struct oic_range_s *range = tmp_buf;
+
+ if (!obddev->obd_type)
+ return -ENODEV;
+
+ err = copy_from_user(range, (const void *)arg, sizeof(*range));
+
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ if ( !OBT(obddev) || !OBP(obddev, sync) ) {
+ err = -EOPNOTSUPP;
+ EXIT;
+ return err;
+ }
+
+ /* XXX sync needs to be tested/verified */
+ err = OBP(obddev, sync)(&conn, &range->obdo, range->count,
+ range->offset);
+
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ return put_user(err, (int *) arg);
+ }
+ case OBD_IOC_CREATE: {
+ struct oic_attr_s *attr = tmp_buf;
+
+ err = copy_from_user(attr, (const void *)arg, sizeof(*attr));
+ if (err) {
+ EXIT;
+ return err;
+ }
+
+ /* has this minor been registered? */
+ if ( !(obddev->obd_flags & OBD_ATTACHED) ||
+ !(obddev->obd_flags & OBD_SET_UP)) {
+ CDEBUG(D_IOCTL, "Device not attached or set up\n");
+ return -ENODEV;
+ }
+ conn.oc_id = attr->conn_id;
+
+ if ( !OBT(obddev) || !OBP(obddev, create) )
+ return -EOPNOTSUPP;
+
+ err = OBP(obddev, create)(&conn, &attr->obdo);
+ if (err) {
+ EXIT;
+ return err;
+ }
+
+ err = copy_to_user((int *)arg, attr, sizeof(*attr));
+ EXIT;
+ return err;
+ }
+
+ case OBD_IOC_DESTROY: {
+ struct oic_attr_s *attr = tmp_buf;
+
+ /* has this minor been registered? */
+ if (!obddev->obd_type)
+ return -ENODEV;
+
+ err = copy_from_user(attr, (int *)arg, sizeof(*attr));
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ if ( !OBT(obddev) || !OBP(obddev, destroy) )
+ return -EOPNOTSUPP;
+
+ conn.oc_id = attr->conn_id;
+ err = OBP(obddev, destroy)(&conn, &attr->obdo);
+ EXIT;
+ return err;
+ }
+
+ case OBD_IOC_SETATTR: {
+ struct oic_attr_s *attr = tmp_buf;
+
+ /* has this minor been registered? */
+ if (!obddev->obd_type)
+ return -ENODEV;
+
+ err = copy_from_user(attr, (int *)arg, sizeof(*attr));
+ if (err)
+ return err;
+
+ if ( !OBT(obddev) || !OBP(obddev, setattr) )
+ return -EOPNOTSUPP;
+
+ conn.oc_id = attr->conn_id;
+ err = OBP(obddev, setattr)(&conn, &attr->obdo);
+ EXIT;
+ return err;
+ }
+
+ case OBD_IOC_GETATTR: {
+ struct oic_attr_s *attr = tmp_buf;
+
+ err = copy_from_user(attr, (int *)arg, sizeof(*attr));
+ if (err)
+ return err;
+
+ conn.oc_id = attr->conn_id;
+ ODEBUG(&attr->obdo);
+ err = OBP(obddev, getattr)(&conn, &attr->obdo);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ err = copy_to_user((int *)arg, attr, sizeof(*attr));
+ EXIT;
+ return err;
+ }
+
+ case OBD_IOC_READ: {
+ int err;
+ struct oic_rw_s *rw_s = tmp_buf; /* read, write ioctl str */
+
+ err = copy_from_user(rw_s, (int *)arg, sizeof(*rw_s));
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ conn.oc_id = rw_s->conn_id;
+
+ if ( !OBT(obddev) || !OBP(obddev, read) ) {
+ err = -EOPNOTSUPP;
+ EXIT;
+ return err;
+ }
+
+
+ err = OBP(obddev, read)(&conn, &rw_s->obdo, rw_s->buf,
+ &rw_s->count, rw_s->offset);
+
+ ODEBUG(&rw_s->obdo);
+ CDEBUG(D_INFO, "READ: conn %d, count %Ld, offset %Ld, '%s'\n",
+ rw_s->conn_id, rw_s->count, rw_s->offset, rw_s->buf);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ err = copy_to_user((int*)arg, &rw_s->count, sizeof(rw_s->count));
+ EXIT;
+ return err;
+ }
+
+ case OBD_IOC_WRITE: {
+ struct oic_rw_s *rw_s = tmp_buf; /* read, write ioctl str */
+
+ err = copy_from_user(rw_s, (int *)arg, sizeof(*rw_s));
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ conn.oc_id = rw_s->conn_id;
+
+ if ( !OBT(obddev) || !OBP(obddev, write) ) {
+ err = -EOPNOTSUPP;
+ return err;
+ }
+
+ CDEBUG(D_INFO, "WRITE: conn %d, count %Ld, offset %Ld, '%s'\n",
+ rw_s->conn_id, rw_s->count, rw_s->offset, rw_s->buf);
+
+ err = OBP(obddev, write)(&conn, &rw_s->obdo, rw_s->buf,
+ &rw_s->count, rw_s->offset);
+ ODEBUG(&rw_s->obdo);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ err = copy_to_user((int *)arg, &rw_s->count,
+ sizeof(rw_s->count));
+ EXIT;
+ return err;
+ }
+ case OBD_IOC_PREALLOCATE: {
+ struct oic_prealloc_s *prealloc = tmp_buf;
+
+ /* has this minor been registered? */
+ if (!obddev->obd_type)
+ return -ENODEV;
+
+ err = copy_from_user(prealloc, (int *)arg, sizeof(*prealloc));
+ if (err)
+ return -EFAULT;
+
+ if ( !(obddev->obd_flags & OBD_ATTACHED) ||
+ !(obddev->obd_flags & OBD_SET_UP)) {
+ CDEBUG(D_IOCTL, "Device not attached or set up\n");
+ return -ENODEV;
+ }
+
+ if ( !OBT(obddev) || !OBP(obddev, preallocate) )
+ return -EOPNOTSUPP;
+
+ conn.oc_id = prealloc->conn_id;
+ err = OBP(obddev, preallocate)(&conn, &prealloc->alloc,
+ prealloc->ids);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ err =copy_to_user((int *)arg, prealloc, sizeof(*prealloc));
+ EXIT;
+ return err;
+ }
+ case OBD_IOC_STATFS: {
+ struct statfs *tmp;
+ unsigned int conn_id;
+ struct statfs buf;
+
+ /* has this minor been registered? */
+ if (!obddev->obd_type)
+ return -ENODEV;
+
+ tmp = (void *)arg + sizeof(unsigned int);
+ get_user(conn_id, (int *) arg);
+
+ if ( !OBT(obddev) || !OBP(obddev, statfs) )
+ return -EOPNOTSUPP;
+
+ conn.oc_id = conn_id;
+ err = OBP(obddev, statfs)(&conn, &buf);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+ err = copy_to_user(tmp, &buf, sizeof(buf));
+ EXIT;
+ return err;
+
+ }
+ case OBD_IOC_COPY: {
+ struct ioc_mv_s *mvdata = tmp_buf;
+
+ if ( (!(obddev->obd_flags & OBD_SET_UP)) ||
+ (!(obddev->obd_flags & OBD_ATTACHED))) {
+ CDEBUG(D_IOCTL, "Device not attached or set up\n");
+ return -ENODEV;
+ }
+
+ /* get main structure */
+ err = copy_from_user(mvdata, (void *) arg, sizeof(*mvdata));
+ if (err) {
+ EXIT;
+ return err;
+ }
+
+ if ( !OBT(obddev) || !OBP(obddev, copy) )
+ return -EOPNOTSUPP;
+
+ /* do the partition */
+ CDEBUG(D_INFO, "Copy %d, type %s dst %Ld src %Ld\n", dev,
+ obddev->obd_type->typ_name, mvdata->dst.o_id,
+ mvdata->src.o_id);
+
+ conn.oc_id = mvdata->src_conn_id;
+
+ err = OBP(obddev, copy)(&conn, &mvdata->dst,
+ &conn, &mvdata->src,
+ mvdata->src.o_size, 0);
+ return err;
+ }
+
+ case OBD_IOC_MIGR: {
+ struct ioc_mv_s *mvdata = tmp_buf;
+
+ if ( (!(obddev->obd_flags & OBD_SET_UP)) ||
+ (!(obddev->obd_flags & OBD_ATTACHED))) {
+ CDEBUG(D_IOCTL, "Device not attached or set up\n");
+ return -ENODEV;
+ }
+
+ err = copy_from_user(mvdata, (void *) arg, sizeof(*mvdata));
+ if (err) {
+ EXIT;
+ return err;
+ }
+
+ CDEBUG(D_INFO, "Migrate copying %d bytes\n", sizeof(*mvdata));
+
+ if ( !OBT(obddev) || !OBP(obddev, migrate) )
+ return -EOPNOTSUPP;
+
+ /* do the partition */
+ CDEBUG(D_INFO, "Migrate %d, type %s conn %d src %Ld dst %Ld\n",
+ dev, obddev->obd_type->typ_name, mvdata->src_conn_id,
+ mvdata->src.o_id, mvdata->dst.o_id);
+
+ conn.oc_id = mvdata->src_conn_id;
+ err = OBP(obddev, migrate)(&conn, &mvdata->dst, &mvdata->src,
+ mvdata->src.o_size, 0);
+
+ return err;
+ }
+ case OBD_IOC_PUNCH: {
+ struct oic_rw_s *rw_s = tmp_buf; /* read, write ioctl str */
+
+ err = copy_from_user(rw_s, (int *)arg, sizeof(*rw_s));
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ conn.oc_id = rw_s->conn_id;
+
+ if ( !OBT(obddev) || !OBP(obddev, punch) ) {
+ err = -EOPNOTSUPP;
+ return err;
+ }
+
+ CDEBUG(D_INFO, "PUNCH: conn %d, count %Ld, offset %Ld\n",
+ rw_s->conn_id, rw_s->count, rw_s->offset);
+ err = OBP(obddev, punch)(&conn, &rw_s->obdo, rw_s->count,
+ rw_s->offset);
+ ODEBUG(&rw_s->obdo);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+ EXIT;
+ return err;
+ }
+
+ default: {
+ struct obd_type *type;
+ struct oic_generic input;
+ char *nm;
+ void *karg;
+
+ /* get data structures */
+ err = copy_from_user(&input, (void *)arg, sizeof(input));
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ err = getdata(input.att_typelen + 1, &input.att_type);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ /* find the type */
+ nm = input.att_type;
+ type = obd_nm_to_type(nm);
+#ifdef CONFIG_KMOD
+ if ( !type ) {
+ if ( !request_module(nm) ) {
+ CDEBUG(D_PSDEV, "Loaded module '%s'\n", nm);
+ type = obd_nm_to_type(nm);
+ } else {
+ CDEBUG(D_PSDEV, "Can't load module '%s'\n", nm);
+ }
+ }
+#endif
+ OBD_FREE(input.att_type, input.att_typelen + 1);
+ if ( !type ) {
+ printk(__FUNCTION__ ": unknown obd type dev %d\n", dev);
+ EXIT;
+ return -EINVAL;
+ }
+
+ if ( !type->typ_ops || !type->typ_ops->o_iocontrol ) {
+ EXIT;
+ return -EOPNOTSUPP;
+ }
+ conn.oc_id = input.att_connid;
+
+ CDEBUG(D_INFO, "Calling ioctl %x for type %s, len %d\n",
+ cmd, type->typ_name, input.att_datalen);
+
+ /* get the generic data */
+ karg = input.att_data;
+ err = getdata(input.att_datalen, &karg);
+ if ( err ) {
+ EXIT;
+ return err;
+ }
+
+ err = type->typ_ops->o_iocontrol(cmd, &conn, input.att_datalen,
+ karg, input.att_data);
+ OBD_FREE(karg, input.att_datalen);
+
+ EXIT;
+ return err;
+ }
+ }
+} /* obd_class_ioctl */
/* Driver interface done, utility functions follow */
int obd_register_type(struct obd_ops *ops, char *nm)
{
- struct obd_type *type;
-
-
- if (obd_init_magic != 0x11223344) {
- EXIT;
- return -EINVAL;
- }
-
- if ( obd_nm_to_type(nm) ) {
- CDEBUG(D_IOCTL, "Type %s already registered\n", nm);
- EXIT;
- return -1;
- }
-
- OBD_ALLOC(type, struct obd_type * , sizeof(*type));
- if ( !type ) {
- EXIT;
- return -ENOMEM;
- }
- memset(type, 0, sizeof(*type));
- INIT_LIST_HEAD(&type->typ_chain);
- MOD_INC_USE_COUNT;
- list_add(&type->typ_chain, obd_types.next);
- type->typ_ops = ops;
- type->typ_name = nm;
- EXIT;
- return 0;
+ struct obd_type *type;
+
+
+ if (obd_init_magic != 0x11223344) {
+ printk(__FUNCTION__ ": bad magic for type\n");
+ EXIT;
+ return -EINVAL;
+ }
+
+ if ( obd_nm_to_type(nm) ) {
+ CDEBUG(D_IOCTL, "Type %s already registered\n", nm);
+ EXIT;
+ return -EEXIST;
+ }
+
+ OBD_ALLOC(type, struct obd_type * , sizeof(*type));
+ if ( !type ) {
+ EXIT;
+ return -ENOMEM;
+ }
+ memset(type, 0, sizeof(*type));
+ INIT_LIST_HEAD(&type->typ_chain);
+ MOD_INC_USE_COUNT;
+ list_add(&type->typ_chain, obd_types.next);
+ type->typ_ops = ops;
+ type->typ_name = nm;
+ EXIT;
+ return 0;
}
-
+
int obd_unregister_type(char *nm)
{
- struct obd_type *type = obd_nm_to_type(nm);
-
- if ( !type ) {
- MOD_DEC_USE_COUNT;
- printk("OBD: NO TYPE\n");
- EXIT;
- return -1;
- }
-
- if ( type->typ_refcnt ) {
- MOD_DEC_USE_COUNT;
- printk("OBD: refcount wrap\n");
- EXIT;
- return -1;
- }
-
- list_del(&type->typ_chain);
- OBD_FREE(type, sizeof(*type));
- MOD_DEC_USE_COUNT;
- return 0;
-}
+ struct obd_type *type = obd_nm_to_type(nm);
+
+ if ( !type ) {
+ MOD_DEC_USE_COUNT;
+ printk(KERN_INFO __FUNCTION__ ": unknown obd type\n");
+ EXIT;
+ return -EINVAL;
+ }
+
+ if ( type->typ_refcnt ) {
+ MOD_DEC_USE_COUNT;
+ printk(KERN_ALERT __FUNCTION__ ":type %s has refcount "
+ "(%d)\n", nm, type->typ_refcnt);
+ EXIT;
+ return -EBUSY;
+ }
+
+ list_del(&type->typ_chain);
+ OBD_FREE(type, sizeof(*type));
+ MOD_DEC_USE_COUNT;
+ return 0;
+} /* obd_unregister_type */
/* declare character device */
static struct file_operations obd_psdev_fops = {
- NULL, /* llseek */
- NULL, /* read */
- NULL, /* write */
- NULL, /* presto_psdev_readdir */
- NULL, /* poll */
- obd_class_ioctl, /* ioctl */
- NULL, /* presto_psdev_mmap */
- obd_class_open, /* open */
- NULL,
- obd_class_release, /* release */
- NULL, /* fsync */
- NULL, /* fasync */
- NULL, /* check_media_change */
- NULL, /* revalidate */
- NULL /* lock */
+ ioctl: obd_class_ioctl, /* ioctl */
+ open: obd_class_open, /* open */
+ release: obd_class_release, /* release */
};
int init_obd(void)
{
- int i;
-
- printk(KERN_INFO "OBD class driver v0.002, braam@stelias.com\n");
-
- INIT_LIST_HEAD(&obd_types);
-
- if (register_chrdev(OBD_PSDEV_MAJOR,"obd_psdev",
- &obd_psdev_fops)) {
- printk(KERN_ERR "obd_psdev: unable to get major %d\n",
- OBD_PSDEV_MAJOR);
- return -EIO;
- }
-
- for (i = 0; i < MAX_OBD_DEVICES; i++) {
- memset(&(obd_dev[i]), 0, sizeof(obd_dev[i]));
- obd_dev[i].obd_minor = i;
- INIT_LIST_HEAD(&obd_dev[i].obd_gen_clients);
- }
-
- obd_sysctl_init();
- obd_init_magic = 0x11223344;
- return 0;
+ int err;
+ int i;
+
+ printk(KERN_INFO "OBD class driver v0.01, braam@stelias.com\n");
+
+ INIT_LIST_HEAD(&obd_types);
+
+ if (register_chrdev(OBD_PSDEV_MAJOR,"obd_psdev",
+ &obd_psdev_fops)) {
+ printk(KERN_ERR __FUNCTION__ ": unable to get major %d\n",
+ OBD_PSDEV_MAJOR);
+ return -EIO;
+ }
+
+ for (i = 0; i < MAX_OBD_DEVICES; i++) {
+ memset(&(obd_dev[i]), 0, sizeof(obd_dev[i]));
+ obd_dev[i].obd_minor = i;
+ INIT_LIST_HEAD(&obd_dev[i].obd_gen_clients);
+ }
+
+ err = obd_init_obdo_cache();
+ if (err)
+ return err;
+ obd_sysctl_init();
+ obd_init_magic = 0x11223344;
+ return 0;
}
EXPORT_SYMBOL(obd_register_type);
EXPORT_SYMBOL(gen_cleanup);
EXPORT_SYMBOL(gen_disconnect);
EXPORT_SYMBOL(gen_copy_data);
+EXPORT_SYMBOL(obdo_cachep);
/* EXPORT_SYMBOL(gen_multi_attach); */
EXPORT_SYMBOL(gen_multi_setup);
#ifdef MODULE
int init_module(void)
{
- return init_obd();
+ return init_obd();
}
void cleanup_module(void)
{
- int i;
+ int i;
ENTRY;
unregister_chrdev(OBD_PSDEV_MAJOR, "obd_psdev");
- for (i = 0; i < MAX_OBD_DEVICES; i++) {
- struct obd_device *obddev = &obd_dev[i];
- if ( obddev->obd_type &&
- (obddev->obd_flags & OBD_SET_UP) &&
- obddev->obd_type->typ_ops->o_detach ) {
- OBP(obddev, detach)(obddev);
- }
- }
-
-
- obd_sysctl_clean();
- obd_init_magic = 0;
+ for (i = 0; i < MAX_OBD_DEVICES; i++) {
+ struct obd_device *obddev = &obd_dev[i];
+ if ( obddev->obd_type &&
+ (obddev->obd_flags & OBD_SET_UP) &&
+ OBT(obddev) && OBP(obddev, detach) ) {
+ /* XXX should this call generic detach otherwise? */
+ OBP(obddev, detach)(obddev);
+ }
+ }
+
+ obd_cleanup_obdo_cache();
+ obd_sysctl_clean();
+ CDEBUG(D_MALLOC, "CLASS mem used %ld\n", obd_memory);
+ obd_init_magic = 0;
+ EXIT;
}
#endif