/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * An implementation of a loadable kernel mode driver providing
- * multiple kernel/user space bidirectional communications links.
+ * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
*
- * Author: Alan Cox <alan@cymru.net>
+ * This code is issued under the GNU General Public License.
+ * See the file COPYING in this distribution
*
- * 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>
+ * These are the only exported functions, they provide some generic
+ * infrastructure for managing object devices
*
- * Changes for Linux 2.1
- * Copyright (c) 1997 Carnegie-Mellon University
- *
- * 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/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/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;
-unsigned long obd_memory = 0;
-unsigned long obd_fail_loc = 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;
+ CDEBUG(D_IOCTL, "MOD_INC_USE for open: count = %d\n",
+ atomic_read(&(THIS_MODULE)->uc.usecount));
MOD_INC_USE_COUNT;
RETURN(0);
}
{
ENTRY;
+ // 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;
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;
}
-static struct obd_type *obd_nm_to_type(char *nm)
+
+inline void obd_conn2data(struct obd_ioctl_data *data, struct lustre_handle *conn)
{
- struct obd_type *type = obd_search_type(nm);
+ data->ioc_addr = conn->addr;
+ data->ioc_cookie = conn->cookie;
+}
-#ifdef CONFIG_KMOD
- if ( !type ) {
- if ( !request_module(nm) ) {
- CDEBUG(D_INFO, "Loaded module '%s'\n", nm);
- type = obd_search_type(nm);
+static void forcibly_detach_exports(struct obd_device *obd)
+{
+ 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_INFO, "Can't load module '%s'\n", nm);
+ CDEBUG(D_IOCTL, "export %p disconnected\n", exp);
}
}
-#endif
- return type;
}
/* 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];
+ char *buf = NULL;
+ int len = 0;
struct obd_ioctl_data *data;
struct obd_device *obd = filp->private_data;
- struct obd_conn conn;
+
+ struct lustre_handle conn;
int rw = OBD_BRW_READ;
int err = 0;
+ int serialised = 0;
+
ENTRY;
- memset(buf, 0, sizeof(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) {
+ 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");
- RETURN(-EINVAL);
- }
- if (obd_ioctl_getdata(buf, buf + 800, (void *)arg)) {
+ GOTO(out, err=-EINVAL);
+ }
+ if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
CERROR("OBD ioctl: data error\n");
- RETURN(-EINVAL);
+ GOTO(out, err=-EINVAL);
}
data = (struct obd_ioctl_data *)buf;
switch (cmd) {
case TCGETS:
- RETURN(-EINVAL);
- case OBD_IOC_DEVICE: {
+ GOTO(out, err=-EINVAL);
+ case OBD_IOC_DEVICE: {
CDEBUG(D_IOCTL, "\n");
- if (data->ioc_dev >= MAX_OBD_DEVICES ||
- data->ioc_dev < 0) {
+ if (data->ioc_dev >= MAX_OBD_DEVICES || data->ioc_dev < 0) {
CERROR("OBD ioctl: DEVICE insufficient devices\n");
- RETURN(-EINVAL);
+ GOTO(out, err=-EINVAL);
}
CDEBUG(D_IOCTL, "device %d\n", data->ioc_dev);
filp->private_data = &obd_dev[data->ioc_dev];
- RETURN(0);
+ 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;
/* have we attached a type to this device */
- if (obd->obd_flags & OBD_ATTACHED) {
- CERROR("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);
+ }
+
+ 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 %s %s\n", MKSTR(data->ioc_inlbuf1),
- MKSTR(data->ioc_inlbuf2));
+ 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);
+ type = class_nm_to_type(data->ioc_inlbuf1);
if (!type) {
CERROR("OBD: unknown type dev %d\n", obd->obd_minor);
- RETURN(-EINVAL);
+ 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_req_list);
-
+ 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 (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;
- } else {
- obd->obd_flags |= OBD_ATTACHED;
+
+ } else {
+ obd->obd_flags |= OBD_ATTACHED;
+
type->typ_refcnt++;
- CDEBUG(D_IOCTL, "OBD: dev %d attached type %s\n",
+ CDEBUG(D_IOCTL, "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, "MOD_INC_USE for attach: count = %d\n",
+ atomic_read(&(THIS_MODULE)->uc.usecount));
MOD_INC_USE_COUNT;
}
- RETURN(err);
+ GOTO(out, err);
}
case OBD_IOC_DETACH: {
ENTRY;
if (obd->obd_flags & OBD_SET_UP) {
CERROR("OBD device %d still set up\n", obd->obd_minor);
- RETURN(-EBUSY);
+ GOTO(out, err=-EBUSY);
}
- if (! (obd->obd_flags & OBD_ATTACHED) ) {
+ if (!(obd->obd_flags & OBD_ATTACHED) ) {
CERROR("OBD device %d not attached\n", obd->obd_minor);
- RETURN(-ENODEV);
+ GOTO(out, err=-ENODEV);
}
- if ( !list_empty(&obd->obd_gen_clients) ) {
- CERROR("OBD device %d has connected clients\n",
- obd->obd_minor);
- RETURN(-EBUSY);
- }
- if ( !list_empty(&obd->obd_req_list) ) {
- CERROR("OBD device %d has hanging requests\n",
- obd->obd_minor);
- RETURN(-EBUSY);
+ 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;
- RETURN(0);
+ GOTO(out, err = 0);
}
case OBD_IOC_SETUP: {
/* have we attached a type to this device? */
if (!(obd->obd_flags & OBD_ATTACHED)) {
CERROR("Device %d not attached\n", obd->obd_minor);
- RETURN(-ENODEV);
+ GOTO(out, err=-ENODEV);
}
/* has this been done already? */
if ( obd->obd_flags & OBD_SET_UP ) {
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 = obd_setup(obd, sizeof(*data), data);
- if (!err) {
+ if (!err) {
obd->obd_type->typ_refcnt++;
obd->obd_flags |= OBD_SET_UP;
}
- RETURN(err);
+ GOTO(out, err);
}
case OBD_IOC_CLEANUP: {
/* have we attached a type to this device? */
if (!(obd->obd_flags & OBD_ATTACHED)) {
CERROR("Device %d not attached\n", obd->obd_minor);
- RETURN(-ENODEV);
+ GOTO(out, err=-ENODEV);
}
if ( OBT(obd) && OBP(obd, cleanup) )
obd->obd_flags &= ~OBD_SET_UP;
obd->obd_type->typ_refcnt--;
}
- RETURN(err);
+ GOTO(out, err);
}
case OBD_IOC_CONNECT: {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
+ 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;
+ CDEBUG(D_IOCTL, "assigned export "LPX64"\n", conn.addr);
+ obd_conn2data(data, &conn);
if (err)
- RETURN(err);
+ GOTO(out, err);
- err = copy_to_user((int *)arg, data, sizeof(*data));
- RETURN(err);
+ 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: {
+ 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;
- RETURN(0);
+ 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)
- RETURN(err);
-
- err = copy_to_user((int *)arg, data, sizeof(*data));
- 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)
- RETURN(err);
-
- err = copy_to_user((int *)arg, data, sizeof(*data));
- 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;
+ 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);
+ }
- err = obd_setattr(&conn, &data->ioc_obdo1);
- if (err)
- RETURN(err);
+ case OBD_IOC_DESTROY: {
+ //void *ea;
+ obd_data2conn(&conn, data);
- err = copy_to_user((int *)arg, data, sizeof(*data));
- 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_DESTROY: {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
+ case OBD_IOC_OPEN: {
+ struct lov_stripe_md *lsm = NULL; // XXX fill in from create
- err = obd_destroy(&conn, &data->ioc_obdo1);
- if (err)
- 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);
+ }
- err = copy_to_user((int *)arg, data, sizeof(*data));
- RETURN(err);
+ case OBD_IOC_CLOSE: {
+ struct lov_stripe_md *lsm = NULL; // XXX fill in from create
+
+ obd_data2conn(&conn, data);
+ err = obd_close(&conn, &data->ioc_obdo1, lsm);
+ GOTO(out, err);
}
case OBD_IOC_BRW_WRITE:
rw = OBD_BRW_WRITE;
case OBD_IOC_BRW_READ: {
- /* FIXME: use a better ioctl data struct than obd_ioctl_data.
- * We don't really support multiple-obdo I/Os here,
- * for example offset and count are not per-obdo.
- */
- struct obd_conn conns[2];
- struct obdo *obdos[2] = { NULL, NULL };
- obd_count oa_bufs[2] = { 0, 0 };
- struct page **bufs = NULL;
- obd_size *counts = NULL;
- obd_off *offsets = NULL;
- obd_flag *flags = NULL;
- int num = 1;
- int pages;
- int i, j;
-
- pages = oa_bufs[0] = data->ioc_plen1 / PAGE_SIZE;
- if (data->ioc_obdo2.o_id) {
- num = 2;
- oa_bufs[1] = data->ioc_plen2 / PAGE_SIZE;
- pages += oa_bufs[1];
- }
-
- CDEBUG(D_INODE, "BRW %s with %dx%d pages\n",
- rw == OBD_BRW_READ ? "read" : "write",
- num, oa_bufs[0]);
- bufs = kmalloc(pages * sizeof(*bufs), GFP_KERNEL);
- counts = kmalloc(pages * sizeof(*counts), GFP_KERNEL);
- offsets = kmalloc(pages * sizeof(*offsets), GFP_KERNEL);
- flags = kmalloc(pages * sizeof(*flags), GFP_KERNEL);
- if (!bufs || !counts || !offsets || !flags) {
+ 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);
- err = -ENOMEM;
- GOTO(brw_free, err);
+ GOTO(brw_free, err = -ENOMEM);
}
- obdos[0] = &data->ioc_obdo1;
- if (num > 1)
- obdos[1] = &data->ioc_obdo2;
-
- for (i = 0, pages = 0; i < num; i++) {
- unsigned long off;
- void *from;
-
- conns[i].oc_id = (&data->ioc_conn1)[i];
- conns[i].oc_dev = obd;
-
- from = (&data->ioc_pbuf1)[i];
- off = data->ioc_offset;
-
- for (j = 0; j < oa_bufs[i];
- j++, pages++, off += PAGE_SIZE, from += PAGE_SIZE){
- unsigned long to;
-
- to = __get_free_pages(GFP_KERNEL, 0);
- if (!to) {
- /* ||
- copy_from_user((void *)to,from,PAGE_SIZE))
- free_pages(to, 0);
- */
- CERROR("no memory for brw pages\n");
- err = -ENOMEM;
- GOTO(brw_cleanup, err);
- }
- bufs[pages] = virt_to_page(to);
- counts[pages] = PAGE_SIZE;
- offsets[pages] = off;
- flags[pages] = 0;
+ 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);
}
}
- err = obd_brw(rw, conns, num, obdos, oa_bufs, bufs,
- counts, offsets, flags);
-
+ 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;
brw_cleanup:
- while (pages-- > 0)
- free_pages((unsigned long)page_address(bufs[pages]), 0);
+ 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);
+ }
+ }
brw_free:
- kfree(flags);
- kfree(offsets);
- kfree(counts);
- kfree(bufs);
- return err;
+ OBD_FREE(pga, pages * sizeof(*pga));
+ GOTO(out, err);
}
- default: {
- conn.oc_id = data->ioc_conn1;
- conn.oc_dev = obd;
+ default:
+ obd_data2conn(&conn, data);
- err = obd_iocontrol(cmd, &conn, sizeof(*data), data, NULL);
+ err = obd_iocontrol(cmd, &conn, len, data, NULL);
if (err)
- RETURN(err);
-
- err = copy_to_user((int *)arg, data, sizeof(*data));
- RETURN(err);
- }
- }
-} /* obd_class_ioctl */
-
+ GOTO(out, err);
-/* Driver interface done, utility functions follow */
-int obd_register_type(struct obd_ops *ops, char *nm)
-{
- struct obd_type *type;
-
- ENTRY;
-
- if (obd_init_magic != 0x11223344) {
- CERROR("bad magic for type\n");
- 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);
- RETURN(-EEXIST);
- }
-
- OBD_ALLOC(type, sizeof(*type));
- if (!type)
- RETURN(-ENOMEM);
- 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;
- RETURN(0);
-}
-
-int obd_unregister_type(char *nm)
-{
- struct obd_type *type = obd_nm_to_type(nm);
-
- ENTRY;
-
- if ( !type ) {
- MOD_DEC_USE_COUNT;
- CERROR("unknown obd type\n");
- RETURN(-EINVAL);
- }
+ out:
+ if (buf)
+ OBD_FREE(buf, len);
+ if (serialised)
+ up(&obd_conf_sem);
+ RETURN(err);
+} /* obd_class_ioctl */
- if ( type->typ_refcnt ) {
- MOD_DEC_USE_COUNT;
- CERROR("type %s has refcount (%d)\n", nm, type->typ_refcnt);
- 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 = {
&obd_psdev_fops
};
-EXPORT_SYMBOL(obd_register_type);
-EXPORT_SYMBOL(obd_unregister_type);
+void (*class_signal_connection_failure)(struct ptlrpc_connection *);
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);
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))) {
return err;
}
- 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);
- INIT_LIST_HEAD(&obd_dev[i].obd_req_list);
- init_waitqueue_head(&obd_dev[i].obd_req_waitq);
- }
+ /* 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_obdo_cache();
+ err = obd_init_caches();
+
if (err)
return err;
obd_sysctl_init();
- obd_init_magic = 0x11223344;
+
+ err=lprocfs_reg_main();
+
return 0;
}
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();
+
+ err = lprocfs_dereg_main();
+
CERROR("obd memory leaked: %ld bytes\n", obd_memory);
- obd_init_magic = 0;
EXIT;
}
-MODULE_AUTHOR("Cluster File Systems, Inc. <braam@clusterfs.com>");
+MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
MODULE_DESCRIPTION("Lustre Class Driver v1.0");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL");
module_init(init_obdclass);
module_exit(cleanup_obdclass);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff