-/*
- * An implementation of a loadable kernel mode driver providing
- * multiple kernel/user space bidirectional communications links.
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Author: Alan Cox <alan@cymru.net>
+ * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- *
- * Adapted to become the Linux 2.0 Coda pseudo device
- * Peter Braam <braam@maths.ox.ac.uk>
- * Michael Callahan <mjc@emmy.smith.edu>
+ * This code is issued under the GNU General Public License.
+ * See the file COPYING in this distribution
*
- * Changes for Linux 2.1
- * Copyright (c) 1997 Carnegie-Mellon University
+ * These are the only exported functions, they provide some generic
+ * infrastructure for managing object devices
*
- * Redone again for Intermezzo
- * Copyright (c) 1998 Peter J. Braam
- *
- * Hacked up again for simulated OBD
- * Copyright (c) 1999 Stelias Computing, Inc.
- * (authors {pschwan,braam}@stelias.com)
- * Copyright (C) 1999 Seagate Technology, Inc.
- * Copyright (C) 2001 Cluster File Systems, Inc.
- *
- *
+ * Object Devices Class Driver
*/
#define EXPORT_SYMTAB
#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/slab.h>
#include <linux/delay.h>
#include <linux/skbuff.h>
#include <linux/proc_fs.h>
-#include <linux/vmalloc.h>
#include <linux/fs.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/list.h>
#include <asm/io.h>
+#include <asm/ioctls.h>
#include <asm/system.h>
#include <asm/poll.h>
#include <asm/uaccess.h>
#include <linux/miscdevice.h>
+#define DEBUG_SUBSYSTEM S_CLASS
+
#include <linux/obd_support.h>
#include <linux/obd_class.h>
+#include <linux/lustre_debug.h>
+#include <linux/smp_lock.h>
+#include <linux/lprocfs_status.h>
-static int obd_init_magic;
-int obd_print_entry = 1;
-int obd_debug_level = ~0;
-long obd_memory = 0;
+struct semaphore obd_conf_sem; /* serialize configuration commands */
struct obd_device obd_dev[MAX_OBD_DEVICES];
struct list_head obd_types;
+unsigned long obd_memory;
+
+/* The following are visible and mutable through /proc/sys/lustre/. */
+unsigned long obd_fail_loc;
+unsigned long obd_timeout = 100;
+char obd_recovery_upcall[128] = "/usr/lib/lustre/ha_assist";
+
+extern struct obd_type *class_nm_to_type(char *nm);
/* opening /dev/obd */
static int obd_class_open(struct inode * inode, struct file * file)
{
ENTRY;
- file->private_data = NULL;
+ file->private_data = NULL;
+ CDEBUG(D_IOCTL, "MOD_INC_USE for open: count = %d\n",
+ atomic_read(&(THIS_MODULE)->uc.usecount));
MOD_INC_USE_COUNT;
- EXIT;
- return 0;
+ RETURN(0);
}
/* closing /dev/obd */
{
ENTRY;
- if (file->private_data)
- file->private_data = NULL;
+ // XXX drop lsm, connections here
+ if (file->private_data)
+ file->private_data = NULL;
+ CDEBUG(D_IOCTL, "MOD_DEC_USE for close: count = %d\n",
+ atomic_read(&(THIS_MODULE)->uc.usecount) - 1);
MOD_DEC_USE_COUNT;
- EXIT;
- return 0;
+ RETURN(0);
}
-/*
- * 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)
+
+inline void obd_data2conn(struct lustre_handle *conn, struct obd_ioctl_data *data)
{
- 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;
+ conn->addr = data->ioc_addr;
+ conn->cookie = data->ioc_cookie;
+}
+
+
+inline void obd_conn2data(struct obd_ioctl_data *data, struct lustre_handle *conn)
+{
+ data->ioc_addr = conn->addr;
+ data->ioc_cookie = conn->cookie;
}
-static struct obd_type *obd_nm_to_type(char *nm)
+static void forcibly_detach_exports(struct obd_device *obd)
{
- 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);
- }
- }
-#endif
- return type;
+ int rc;
+ struct list_head *tmp, *n;
+ struct lustre_handle fake_conn;
+
+ CDEBUG(D_IOCTL, "OBD device %d (%p) has exports, "
+ "disconnecting them", obd->obd_minor, obd);
+ list_for_each_safe(tmp, n, &obd->obd_exports) {
+ struct obd_export *exp = list_entry(tmp, struct obd_export,
+ exp_obd_chain);
+ fake_conn.addr = (__u64)(unsigned long)exp;
+ fake_conn.cookie = exp->exp_cookie;
+ rc = obd_disconnect(&fake_conn);
+ if (rc) {
+ CDEBUG(D_IOCTL, "disconnecting export %p failed: %d\n",
+ exp, rc);
+ } else {
+ CDEBUG(D_IOCTL, "export %p disconnected\n", exp);
+ }
+ }
}
/* to control /dev/obd */
-static int obd_class_ioctl (struct inode * inode, struct file * filp,
+static int obd_class_ioctl (struct inode * inode, struct file * filp,
unsigned int cmd, unsigned long arg)
{
- /* NOTE this must be larger than any of the ioctl data structs */
- char buf[1024];
- struct obd_ioctl_data *data;
- struct obd_device *obd = filp->private_data;
- struct obd_conn conn;
+ char *buf = NULL;
+ int len = 0;
+ struct obd_ioctl_data *data;
+ struct obd_device *obd = filp->private_data;
+
+ struct lustre_handle conn;
+ int rw = OBD_BRW_READ;
int err = 0;
- ENTRY;
+ int serialised = 0;
- memset(buf, 0, sizeof(buf));
+ ENTRY;
- if (!obd && cmd != OBD_IOC_DEVICE && cmd != TCGETS) {
- printk("OBD ioctl: No device\n");
- return -EINVAL;
- }
- if (obd_ioctl_getdata(buf, buf + 800, (void *)arg)) {
- printk("OBD ioctl: data error\n");
- return -EINVAL;
- }
- data = (struct obd_ioctl_data *)buf;
+ switch (cmd)
+ {
+ case OBD_IOC_BRW_WRITE:
+ case OBD_IOC_BRW_READ:
+ case OBD_IOC_GETATTR:
+ break;
+ default:
+ down(&obd_conf_sem);
+ serialised = 1;
+ break;
+ }
+
+ if (!obd && cmd != OBD_IOC_DEVICE && cmd != TCGETS &&
+ cmd != OBD_IOC_LIST &&
+ cmd != OBD_IOC_NAME2DEV && cmd != OBD_IOC_NEWDEV) {
+ CERROR("OBD ioctl: No device\n");
+ GOTO(out, err=-EINVAL);
+ }
+ if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
+ CERROR("OBD ioctl: data error\n");
+ GOTO(out, err=-EINVAL);
+ }
+ data = (struct obd_ioctl_data *)buf;
switch (cmd) {
- case TCGETS: {
- EXIT;
- return -EINVAL;
- }
- case OBD_IOC_DEVICE: {
- CDEBUG(D_IOCTL, "\n");
- if (data->ioc_dev >= MAX_OBD_DEVICES ||
- data->ioc_dev < 0) {
- printk("OBD ioctl: DEVICE insufficient devices\n");
- return -EINVAL;
- }
- CDEBUG(D_IOCTL, "device %d\n", data->ioc_dev);
-
- filp->private_data = &obd_dev[data->ioc_dev];
- EXIT;
- return 0;
- }
+ case TCGETS:
+ GOTO(out, err=-EINVAL);
+ case OBD_IOC_DEVICE: {
+ CDEBUG(D_IOCTL, "\n");
+ if (data->ioc_dev >= MAX_OBD_DEVICES || data->ioc_dev < 0) {
+ CERROR("OBD ioctl: DEVICE insufficient devices\n");
+ GOTO(out, err=-EINVAL);
+ }
+ CDEBUG(D_IOCTL, "device %d\n", data->ioc_dev);
+
+ filp->private_data = &obd_dev[data->ioc_dev];
+ GOTO(out, err=0);
+ }
+
+ case OBD_IOC_LIST: {
+ int i;
+ char *buf2 = data->ioc_bulk;
+ int remains = data->ioc_inllen1;
+
+ if (!data->ioc_inlbuf1) {
+ CERROR("No buffer passed!\n");
+ GOTO(out, err=-EINVAL);
+ }
+
+
+ for (i = 0 ; i < MAX_OBD_DEVICES ; i++) {
+ int l;
+ char *status;
+ struct obd_device *obd = &obd_dev[i];
+ if (!obd->obd_type)
+ continue;
+ if (obd->obd_flags & OBD_SET_UP)
+ status = "UP";
+ else if (obd->obd_flags & OBD_ATTACHED)
+ status = "AT";
+ else
+ status = "-";
+ l = snprintf(buf2, remains, "%2d %s %s %s %s %d\n",
+ i, status, obd->obd_type->typ_name,
+ obd->obd_name, obd->obd_uuid, obd->obd_type->typ_refcnt);
+ buf2 +=l;
+ remains -=l;
+ if (remains <= 0) {
+ CERROR("not enough space for device listing\n");
+ break;
+ }
+ }
+
+ err = copy_to_user((void *)arg, data, len);
+ GOTO(out, err);
+ }
+
+
+ case OBD_IOC_NAME2DEV: {
+ /* Resolve a device name. This does not change the
+ * currently selected device.
+ */
+ int dev;
+
+ if (!data->ioc_inllen1 || !data->ioc_inlbuf1 ) {
+ CERROR("No name passed,!\n");
+ GOTO(out, err=-EINVAL);
+ }
+ if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
+ CERROR("Name not nul terminated!\n");
+ GOTO(out, err=-EINVAL);
+ }
+
+ CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
+ dev = class_name2dev(data->ioc_inlbuf1);
+ data->ioc_dev = dev;
+ if (dev == -1) {
+ CDEBUG(D_IOCTL, "No device for name %s!\n",
+ data->ioc_inlbuf1);
+ GOTO(out, err=-EINVAL);
+ }
+
+ CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
+ dev);
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ GOTO(out, err);
+ }
+
+ case OBD_IOC_UUID2DEV: {
+ /* Resolve a device uuid. This does not change the
+ * currently selected device.
+ */
+ int dev;
+
+ if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
+ CERROR("No UUID passed!\n");
+ GOTO(out, err=-EINVAL);
+ }
+ if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
+ CERROR("Name not nul terminated!\n");
+ GOTO(out, err=-EINVAL);
+ }
+
+ CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
+ dev = class_uuid2dev(data->ioc_inlbuf1);
+ data->ioc_dev = dev;
+ if (dev == -1) {
+ CDEBUG(D_IOCTL, "No device for name %s!\n",
+ data->ioc_inlbuf1);
+ GOTO(out, err=-EINVAL);
+ }
+
+ CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
+ dev);
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ GOTO(out, err);
+ }
+
+ case OBD_IOC_NEWDEV: {
+ int dev = -1;
+ int i;
+
+ filp->private_data = NULL;
+ for (i = 0 ; i < MAX_OBD_DEVICES ; i++) {
+ struct obd_device *obd = &obd_dev[i];
+ if (!obd->obd_type) {
+ filp->private_data = obd;
+ dev = i;
+ break;
+ }
+ }
+
+
+ data->ioc_dev = dev;
+ if (dev == -1)
+ GOTO(out, err=-EINVAL);
+
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ GOTO(out, err);
+ }
case OBD_IOC_ATTACH: {
struct obd_type *type;
+ int minor;
- ENTRY;
/* have we attached a type to this device */
- if ( obd->obd_flags & OBD_ATTACHED ) {
- printk("OBD: Device %d already typed as %s.\n",
+ if (obd->obd_flags & OBD_ATTACHED || obd->obd_type) {
+ CERROR("OBD: Device %d already typed as %s.\n",
obd->obd_minor, MKSTR(obd->obd_type->typ_name));
- return -EBUSY;
+ GOTO(out, err=-EBUSY);
}
- printk("-----> attach %s %s\n", MKSTR(data->ioc_inlbuf1),
- MKSTR(data->ioc_inlbuf2));
+ if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
+ CERROR("No type passed!\n");
+ GOTO(out, err=-EINVAL);
+ }
+ if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
+ CERROR("Type not nul terminated!\n");
+ GOTO(out, err=-EINVAL);
+ }
+
+ CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
+ MKSTR(data->ioc_inlbuf1),
+ MKSTR(data->ioc_inlbuf2), MKSTR(data->ioc_inlbuf3));
/* find the type */
- type = obd_nm_to_type(data->ioc_inlbuf1);
- if ( !type ) {
- printk("OBD: unknown type dev %d\n", obd->obd_minor);
- return -EINVAL;
+ type = class_nm_to_type(data->ioc_inlbuf1);
+ if (!type) {
+ CERROR("OBD: unknown type dev %d\n", obd->obd_minor);
+ GOTO(out, err=-EINVAL);
}
+ minor = obd->obd_minor;
+ memset(obd, 0, sizeof(*obd));
+ obd->obd_minor = minor;
obd->obd_type = type;
- obd->obd_multi_count = 0;
- INIT_LIST_HEAD(&obd->obd_gen_clients);
-
+ INIT_LIST_HEAD(&obd->obd_exports);
+ INIT_LIST_HEAD(&obd->obd_imports);
+ spin_lock_init(&obd->obd_dev_lock);
+
+ if (data->ioc_inlbuf2) {
+ int len = strlen(data->ioc_inlbuf2) + 1;
+ OBD_ALLOC(obd->obd_name, len);
+ if (!obd->obd_name) {
+ CERROR("no memory\n");
+ LBUG();
+ }
+ memcpy(obd->obd_name, data->ioc_inlbuf2, len);
+ } else {
+ CERROR("WARNING: unnamed obd device\n");
+ }
+ if (data->ioc_inlbuf3) {
+ int len = strlen(data->ioc_inlbuf3);
+ if (len >= sizeof(obd->obd_uuid)) {
+ CERROR("uuid must be < %d bytes long\n",
+ sizeof(obd->obd_uuid));
+ if (obd->obd_name)
+ OBD_FREE(obd->obd_name,
+ strlen(obd->obd_name) + 1);
+ GOTO(out, err=-EINVAL);
+ }
+ memcpy(obd->obd_uuid, data->ioc_inlbuf3, len);
+ }
/* do the attach */
- if ( OBT(obd) && OBP(obd, attach) ) {
- err = OBP(obd, attach)(obd, sizeof(*data), data);
- }
-
- if ( err ) {
+ if (OBP(obd, attach))
+ err = OBP(obd,attach)(obd, sizeof(*data), data);
+ if (err) {
+ if(data->ioc_inlbuf2)
+ OBD_FREE(obd->obd_name, strlen(obd->obd_name)+1);
obd->obd_type = NULL;
- EXIT;
- } else {
- obd->obd_flags |= OBD_ATTACHED;
+
+ } else {
+ obd->obd_flags |= OBD_ATTACHED;
+
type->typ_refcnt++;
- printk("OBD: dev %d attached type %s\n",
- obd->obd_minor, data->ioc_inlbuf1);
- obd->obd_proc_entry =
- proc_lustre_register_obd_device(obd);
+ CDEBUG(D_IOCTL, "OBD: dev %d attached type %s\n",
+ obd->obd_minor, data->ioc_inlbuf1);
+
+ CDEBUG(D_IOCTL, "MOD_INC_USE for attach: count = %d\n",
+ atomic_read(&(THIS_MODULE)->uc.usecount));
MOD_INC_USE_COUNT;
- EXIT;
}
- return err;
+ GOTO(out, err);
}
case OBD_IOC_DETACH: {
ENTRY;
if (obd->obd_flags & OBD_SET_UP) {
- printk("OBD device %d still set up\n", obd->obd_minor);
- return -EBUSY;
- }
- if (! (obd->obd_flags & OBD_ATTACHED) ) {
- printk("OBD device %d not attached\n", obd->obd_minor);
- return -ENODEV;
- }
- if ( !list_empty(&obd->obd_gen_clients) ) {
- printk("OBD device %d has connected clients\n", obd->obd_minor);
- return -EBUSY;
+ CERROR("OBD device %d still set up\n", obd->obd_minor);
+ GOTO(out, err=-EBUSY);
+ }
+ if (!(obd->obd_flags & OBD_ATTACHED) ) {
+ CERROR("OBD device %d not attached\n", obd->obd_minor);
+ GOTO(out, err=-ENODEV);
+ }
+ if (!list_empty(&obd->obd_exports)) {
+ if (!data->ioc_inlbuf1 || data->ioc_inlbuf1[0] != 'F') {
+ CERROR("OBD device %d (%p) has exports\n",
+ obd->obd_minor, obd);
+ GOTO(out, err=-EBUSY);
+ }
+ forcibly_detach_exports(obd);
}
+ if (OBP(obd, detach))
+ err=OBP(obd,detach)(obd);
- if (obd->obd_proc_entry)
- proc_lustre_release_obd_device(obd);
+ if (obd->obd_name) {
+ OBD_FREE(obd->obd_name, strlen(obd->obd_name)+1);
+ obd->obd_name = NULL;
+ }
obd->obd_flags &= ~OBD_ATTACHED;
obd->obd_type->typ_refcnt--;
obd->obd_type = NULL;
+ CDEBUG(D_IOCTL, "MOD_DEC_USE for detach: count = %d\n",
+ atomic_read(&(THIS_MODULE)->uc.usecount) - 1);
MOD_DEC_USE_COUNT;
- EXIT;
- return 0;
+ GOTO(out, err = 0);
}
case OBD_IOC_SETUP: {
- ENTRY;
/* have we attached a type to this device? */
if (!(obd->obd_flags & OBD_ATTACHED)) {
- printk("Device %d not attached\n", obd->obd_minor);
- return -ENODEV;
+ CERROR("Device %d not attached\n", obd->obd_minor);
+ GOTO(out, err=-ENODEV);
}
/* has this been done already? */
if ( obd->obd_flags & OBD_SET_UP ) {
- printk("Device %d already setup (type %s)\n",
+ CERROR("Device %d already setup (type %s)\n",
obd->obd_minor, obd->obd_type->typ_name);
- return -EBUSY;
+ GOTO(out, err=-EBUSY);
}
if ( OBT(obd) && OBP(obd, setup) )
- err = OBP(obd, setup)(obd, sizeof(*data), data);
+ err = obd_setup(obd, sizeof(*data), data);
- if (!err) {
- obd->obd_type->typ_refcnt++;
- obd->obd_flags |= OBD_SET_UP;
- EXIT;
- }
+ if (!err) {
+ obd->obd_type->typ_refcnt++;
+ obd->obd_flags |= OBD_SET_UP;
+ }
- return err;
+ GOTO(out, err);
}
case OBD_IOC_CLEANUP: {
- ENTRY;
+ /* have we attached a type to this device? */
+ if (!(obd->obd_flags & OBD_ATTACHED)) {
+ CERROR("Device %d not attached\n", obd->obd_minor);
+ GOTO(out, err=-ENODEV);
+ }
- if ( !(obd->obd_flags & OBD_SET_UP) ) {
- EXIT;
- return -EINVAL;
- }
+ if ( OBT(obd) && OBP(obd, cleanup) )
+ err = obd_cleanup(obd);
- err = obd_cleanup(obd);
- if ( err ) {
- EXIT;
- return err;
+ if (!err) {
+ obd->obd_flags &= ~OBD_SET_UP;
+ obd->obd_type->typ_refcnt--;
}
-
- obd->obd_flags &= ~OBD_SET_UP;
- obd->obd_type->typ_refcnt--;
- EXIT;
- return 0;
+ GOTO(out, err);
}
- case OBD_IOC_CONNECT:
- {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
+ case OBD_IOC_CONNECT: {
+ char * cluuid = "OBD_CLASS_UUID";
+ obd_data2conn(&conn, data);
- err = obd_connect(&conn);
+ err = obd_connect(&conn, obd, cluuid, NULL, NULL);
- CDEBUG(D_IOCTL, "assigned connection %d\n", conn.oc_id);
- data->ioc_conn1 = conn.oc_id;
- if ( err )
- return err;
+ CDEBUG(D_IOCTL, "assigned export "LPX64"\n", conn.addr);
+ obd_conn2data(data, &conn);
+ if (err)
+ GOTO(out, err);
- return copy_to_user((int *)arg, data, sizeof(*data));
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ // XXX save connection data into file handle
+ GOTO(out, err);
}
- case OBD_IOC_DISCONNECT: {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
-
+ case OBD_IOC_DISCONNECT: {
+ obd_data2conn(&conn, data);
err = obd_disconnect(&conn);
- return err;
- }
+ GOTO(out, err);
+ }
- case OBD_IOC_DEC_USE_COUNT: {
- MOD_DEC_USE_COUNT;
- return 0;
- }
+ case OBD_IOC_DEC_USE_COUNT: {
+ CDEBUG(D_IOCTL, "MOD_DEC_USE for force dec: count = %d\n",
+ atomic_read(&(THIS_MODULE)->uc.usecount) - 1);
+ MOD_DEC_USE_COUNT;
+ GOTO(out, err=0);
+ }
case OBD_IOC_CREATE: {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
-
- err = obd_create(&conn, &data->ioc_obdo1);
- if (err) {
- EXIT;
- return err;
- }
-
- err = copy_to_user((int *)arg, data, sizeof(*data));
- EXIT;
- return err;
+ struct lov_stripe_md *lsm = NULL;
+ obd_data2conn(&conn, data);
+
+#warning FIXME: save lsm into file handle for other ops, release on close
+ err = obd_create(&conn, &data->ioc_obdo1, &lsm);
+ if (!err)
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ GOTO(out, err);
}
case OBD_IOC_GETATTR: {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
- err = obd_getattr(&conn, &data->ioc_obdo1);
- if (err) {
- EXIT;
- return err;
- }
-
- err = copy_to_user((int *)arg, data, sizeof(*data));
- EXIT;
- return err;
+ obd_data2conn(&conn, data);
+ err = obd_getattr(&conn, &data->ioc_obdo1, NULL);
+ if (!err)
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ GOTO(out, err);
}
case OBD_IOC_SETATTR: {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
-
- err = obd_setattr(&conn, &data->ioc_obdo1);
- if (err) {
- EXIT;
- return err;
- }
-
- err = copy_to_user((int *)arg, data, sizeof(*data));
- EXIT;
- return err;
- }
-
- case OBD_IOC_DESTROY: {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
-
- err = obd_destroy(&conn, &data->ioc_obdo1);
- if (err) {
- EXIT;
- return err;
- }
-
- err = copy_to_user((int *)arg, data, sizeof(*data));
- EXIT;
- return err;
- }
-
-#if 0
- case OBD_IOC_MODULE_DEBUG:
- {
- struct module *mod = module_list;
- char *tmp = data->ioc_inlbuf1;
- char line[128];
-
- snprintf(line, 128, "symbol-file\n"
- "symbol-file /usr/src/lum/linux\n"
- "b panic\n"
- "b stop\n");
- tmp += strlen(line);
-
- do {
- sprintf(line,
- "add-symbol-file /usr/src/obd/%s/%s.o %p\n",
- mod->name, mod->name, mod);
- memcpy(tmp, line, strlen(line));
- tmp += strlen(line);
- } while ( mod->next != NULL)
-
- return copy_to_user((int *)arg, data, sizeof(*data) +
- data->ioc_inllen1);
- }
-
- case OBD_IOC_SYNC: {
- struct oic_range_s *range = tmp_buf;
-
- if (!obd->obd_type)
- return -ENODEV;
-
- err = copy_from_user(range, (const void *)arg, sizeof(*range));
-
- if ( err ) {
- EXIT;
- return err;
- }
-
- if ( !OBT(obd) || !OBP(obd, sync) ) {
- err = -EOPNOTSUPP;
- EXIT;
- return err;
- }
-
- /* XXX sync needs to be tested/verified */
- err = OBP(obd, sync)(&conn, &range->obdo, range->count,
- range->offset);
-
- if ( err ) {
- EXIT;
- return err;
- }
-
- return put_user(err, (int *) arg);
+ obd_data2conn(&conn, data);
+ err = obd_setattr(&conn, &data->ioc_obdo1, NULL);
+ if (!err)
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ GOTO(out, 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(obd) || !OBP(obd, read) ) {
- err = -EOPNOTSUPP;
- EXIT;
- return err;
- }
-
+ case OBD_IOC_DESTROY: {
+ //void *ea;
+ obd_data2conn(&conn, data);
- err = OBP(obd, 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;
+ err = obd_destroy(&conn, &data->ioc_obdo1, NULL);
+ if (!err)
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ GOTO(out, 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;
- }
+ case OBD_IOC_OPEN: {
+ struct lov_stripe_md *lsm = NULL; // XXX fill in from create
- conn.oc_id = rw_s->conn_id;
-
- if ( !OBT(obd) || !OBP(obd, 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(obd, 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;
+ obd_data2conn(&conn, data);
+ err = obd_open(&conn, &data->ioc_obdo1, lsm);
+ if (!err)
+ err = copy_to_user((void *)arg, data, sizeof(*data));
+ GOTO(out, err);
}
- case OBD_IOC_PREALLOCATE: {
- struct oic_prealloc_s *prealloc = tmp_buf;
- /* has this minor been registered? */
- if (!obd->obd_type)
- return -ENODEV;
+ case OBD_IOC_CLOSE: {
+ struct lov_stripe_md *lsm = NULL; // XXX fill in from create
- err = copy_from_user(prealloc, (int *)arg, sizeof(*prealloc));
- if (err)
- return -EFAULT;
-
- if ( !(obd->obd_flags & OBD_ATTACHED) ||
- !(obd->obd_flags & OBD_SET_UP)) {
- CDEBUG(D_IOCTL, "Device not attached or set up\n");
- return -ENODEV;
- }
-
- if ( !OBT(obd) || !OBP(obd, preallocate) )
- return -EOPNOTSUPP;
-
- conn.oc_id = prealloc->conn_id;
- err = OBP(obd, preallocate)(&conn, &prealloc->alloc,
- prealloc->ids);
- if ( err ) {
- EXIT;
- return err;
- }
-
- err =copy_to_user((int *)arg, prealloc, sizeof(*prealloc));
- EXIT;
- return err;
+ obd_data2conn(&conn, data);
+ err = obd_close(&conn, &data->ioc_obdo1, lsm);
+ GOTO(out, err);
}
- case OBD_IOC_STATFS: {
- struct statfs *tmp;
- unsigned int conn_id;
- struct statfs buf;
-
- /* has this minor been registered? */
- if (!obd->obd_type)
- return -ENODEV;
-
- tmp = (void *)arg + sizeof(unsigned int);
- get_user(conn_id, (int *) arg);
-
- if ( !OBT(obd) || !OBP(obd, statfs) )
- return -EOPNOTSUPP;
-
- conn.oc_id = conn_id;
- err = OBP(obd, 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 ( (!(obd->obd_flags & OBD_SET_UP)) ||
- (!(obd->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(obd) || !OBP(obd, copy) )
- return -EOPNOTSUPP;
-
- /* do the partition */
- CDEBUG(D_INFO, "Copy %d, type %s dst %Ld src %Ld\n", dev,
- obd->obd_type->typ_name, mvdata->dst.o_id,
- mvdata->src.o_id);
-
- conn.oc_id = mvdata->src_conn_id;
-
- err = OBP(obd, 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 ( (!(obd->obd_flags & OBD_SET_UP)) ||
- (!(obd->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(obd) || !OBP(obd, migrate) )
- return -EOPNOTSUPP;
-
- /* do the partition */
- CDEBUG(D_INFO, "Migrate %d, type %s conn %d src %Ld dst %Ld\n",
- dev, obd->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(obd, 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(obd) || !OBP(obd, punch) ) {
- err = -EOPNOTSUPP;
- return err;
+ case OBD_IOC_BRW_WRITE:
+ rw = OBD_BRW_WRITE;
+ case OBD_IOC_BRW_READ: {
+ struct lov_stripe_md tmp_lsm; // XXX fill in from create
+ struct lov_stripe_md *lsm = &tmp_lsm; // XXX fill in from create
+ struct io_cb_data *cbd = ll_init_cb();
+ obd_count pages = 0;
+ struct brw_page *pga, *pgp;
+ __u64 id = data->ioc_obdo1.o_id;
+ int gfp_mask = (id & 1) ? GFP_HIGHUSER : GFP_KERNEL;
+ int verify = (id != 0);
+ __u64 off;
+ int j;
+
+ if (!cbd)
+ GOTO(out, err = -ENOMEM);
+
+ obd_data2conn(&conn, data);
+
+ pages = data->ioc_count / PAGE_SIZE;
+ off = data->ioc_offset;
+
+ CDEBUG(D_INODE, "BRW %s with %d pages @ "LPX64"\n",
+ rw == OBD_BRW_READ ? "read" : "write", pages, off);
+ OBD_ALLOC(pga, pages * sizeof(*pga));
+ if (!pga) {
+ CERROR("no memory for %d BRW per-page data\n", pages);
+ GOTO(brw_free, err = -ENOMEM);
+ }
+
+ memset(lsm, 0, sizeof(*lsm)); // XXX don't do this later
+ lsm->lsm_object_id = id; // ensure id == lsm->lsm_object_id
+
+ for (j = 0, pgp = pga; j < pages; j++, off += PAGE_SIZE, pgp++){
+ pgp->pg = alloc_pages(gfp_mask, 0);
+ if (!pgp->pg) {
+ CERROR("no memory for brw pages\n");
+ GOTO(brw_cleanup, err = -ENOMEM);
+ }
+ pgp->count = PAGE_SIZE;
+ pgp->off = off;
+ pgp->flag = 0;
+
+ if (verify) {
+ void *addr = kmap(pgp->pg);
+
+ if (rw == OBD_BRW_WRITE)
+ page_debug_setup(addr, pgp->count,
+ pgp->off, id);
+ else
+ page_debug_setup(addr, pgp->count,
+ 0xdeadbeef00c0ffee,
+ 0xdeadbeef00c0ffee);
+ kunmap(pgp->pg);
+ }
}
- CDEBUG(D_INFO, "PUNCH: conn %d, count %Ld, offset %Ld\n",
- rw_s->conn_id, rw_s->count, rw_s->offset);
- err = OBP(obd, punch)(&conn, &rw_s->obdo, rw_s->count,
- rw_s->offset);
- ODEBUG(&rw_s->obdo);
- if ( err ) {
- EXIT;
- return err;
- }
+ err = obd_brw(rw, &conn, lsm, j, pga, ll_sync_io_cb, cbd);
+ if (err)
+ CERROR("test_brw: error from obd_brw: err = %d\n", 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);
+ brw_cleanup:
+ for (j = 0, pgp = pga; j < pages; j++, pgp++) {
+ if (pgp->pg != NULL) {
+ if (verify && !err) {
+ void *addr = kmap(pgp->pg);
+
+ err = page_debug_check("test_brw",
+ addr,
+ PAGE_SIZE,
+ pgp->off,id);
+ kunmap(pgp->pg);
+ }
+ __free_pages(pgp->pg, 0);
}
}
-#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;
+ brw_free:
+ OBD_FREE(pga, pages * sizeof(*pga));
+ GOTO(out, err);
}
-#endif
- default:
- return -EINVAL;
-
- }
-} /* obd_class_ioctl */
-
-
-/* Driver interface done, utility functions follow */
-int obd_register_type(struct obd_ops *ops, char *nm)
-{
- struct obd_type *type;
+ default:
+ obd_data2conn(&conn, data);
+ err = obd_iocontrol(cmd, &conn, len, data, NULL);
+ if (err)
+ GOTO(out, err);
- if (obd_init_magic != 0x11223344) {
- printk(__FUNCTION__ ": bad magic for type\n");
- EXIT;
- return -EINVAL;
+ err = copy_to_user((void *)arg, data, len);
+ GOTO(out, err);
}
- 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);
+ out:
+ if (buf)
+ OBD_FREE(buf, len);
+ if (serialised)
+ up(&obd_conf_sem);
+ RETURN(err);
+} /* obd_class_ioctl */
- 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 = {
release: obd_class_release, /* release */
};
-
/* modules setup */
#define OBD_MINOR 241
static struct miscdevice obd_psdev = {
&obd_psdev_fops
};
-int init_obd(void)
+void (*class_signal_connection_failure)(struct ptlrpc_connection *);
+
+EXPORT_SYMBOL(obd_dev);
+EXPORT_SYMBOL(obdo_cachep);
+EXPORT_SYMBOL(obd_memory);
+EXPORT_SYMBOL(obd_fail_loc);
+EXPORT_SYMBOL(obd_timeout);
+EXPORT_SYMBOL(obd_recovery_upcall);
+EXPORT_SYMBOL(ptlrpc_put_connection_superhack);
+
+EXPORT_SYMBOL(class_register_type);
+EXPORT_SYMBOL(class_unregister_type);
+EXPORT_SYMBOL(class_name2dev);
+EXPORT_SYMBOL(class_uuid2dev);
+EXPORT_SYMBOL(class_uuid2obd);
+EXPORT_SYMBOL(class_new_export);
+EXPORT_SYMBOL(class_destroy_export);
+EXPORT_SYMBOL(class_connect);
+EXPORT_SYMBOL(class_conn2export);
+EXPORT_SYMBOL(class_conn2obd);
+EXPORT_SYMBOL(class_conn2cliimp);
+EXPORT_SYMBOL(class_conn2ldlmimp);
+EXPORT_SYMBOL(class_disconnect);
+EXPORT_SYMBOL(class_disconnect_all);
+//EXPORT_SYMBOL(class_uuid_parse);
+EXPORT_SYMBOL(class_uuid_unparse);
+//EXPORT_SYMBOL(class_multi_setup);
+//EXPORT_SYMBOL(class_multi_cleanup);
+
+EXPORT_SYMBOL(class_signal_connection_failure);
+EXPORT_SYMBOL(ll_sync_io_cb);
+EXPORT_SYMBOL(ll_init_cb);
+EXPORT_SYMBOL(class_nm_to_type);
+
+static int __init init_obdclass(void)
{
+ struct obd_device *obd;
int err;
int i;
- printk(KERN_INFO "OBD class driver v0.01, braam@stelias.com\n");
-
+ printk(KERN_INFO "OBD class driver v0.9, info@clusterfs.com\n");
+
+ sema_init(&obd_conf_sem, 1);
INIT_LIST_HEAD(&obd_types);
-
- if ( (err = misc_register(&obd_psdev)) ) {
- printk(KERN_ERR __FUNCTION__ ": cannot register %d err %d\n",
- OBD_MINOR, err);
- 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);
+ if ((err = misc_register(&obd_psdev))) {
+ CERROR("cannot register %d err %d\n", OBD_MINOR, err);
+ return err;
}
- err = obd_init_obdo_cache();
+ /* This struct is already zerod for us (static global) */
+ for (i = 0, obd = obd_dev; i < MAX_OBD_DEVICES; i++, obd++)
+ obd->obd_minor = i;
+
+ err = obd_init_caches();
+
if (err)
return err;
obd_sysctl_init();
- obd_init_magic = 0x11223344;
+
+ err=lprocfs_reg_main();
+
return 0;
}
-EXPORT_SYMBOL(obd_register_type);
-EXPORT_SYMBOL(obd_unregister_type);
-
-EXPORT_SYMBOL(obd_print_entry);
-EXPORT_SYMBOL(obd_debug_level);
-EXPORT_SYMBOL(obd_dev);
-
-EXPORT_SYMBOL(gen_connect);
-EXPORT_SYMBOL(gen_client);
-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);
-EXPORT_SYMBOL(gen_multi_cleanup);
-
-
-#ifdef MODULE
-int init_module(void)
-{
- return init_obd();
-}
-
-void cleanup_module(void)
+static void __exit cleanup_obdclass(void)
{
- int i;
+ int i, err;
ENTRY;
misc_deregister(&obd_psdev);
for (i = 0; i < MAX_OBD_DEVICES; i++) {
struct obd_device *obd = &obd_dev[i];
- if ( obd->obd_type &&
- (obd->obd_flags & OBD_SET_UP) &&
- OBT(obd) && OBP(obd, detach) ) {
+ if (obd->obd_type && (obd->obd_flags & OBD_SET_UP) &&
+ OBT(obd) && OBP(obd, detach)) {
/* XXX should this call generic detach otherwise? */
OBP(obd, detach)(obd);
- }
+ }
}
- obd_cleanup_obdo_cache();
+ obd_cleanup_caches();
obd_sysctl_clean();
- CDEBUG(D_MALLOC, "CLASS mem used %ld\n", obd_memory);
- obd_init_magic = 0;
+
+ err = lprocfs_dereg_main();
+
+ CERROR("obd memory leaked: %ld bytes\n", obd_memory);
EXIT;
}
-#endif
+
+MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
+MODULE_DESCRIPTION("Lustre Class Driver v1.0");
+MODULE_LICENSE("GPL");
+
+module_init(init_obdclass);
+module_exit(cleanup_obdclass);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff