-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Object Devices Class Driver
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Copyright (C) 2001-2003 Cluster File Systems, Inc.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * This file is part of Lustre, http://www.lustre.org.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Copyright (c) 2011, 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * lustre/obdclass/linux/linux-module.c
*
+ * Object Devices Class Driver
* These are the only exported functions, they provide some generic
* infrastructure for managing object devices
*/
+
#define DEBUG_SUBSYSTEM S_CLASS
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-#ifdef __KERNEL__
-#ifndef AUTOCONF_INCLUDED
-#include <linux/config.h> /* for CONFIG_PROC_FS */
-#endif
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/highmem.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>
-#include <linux/smp_lock.h>
#include <linux/seq_file.h>
-#else
-# include <liblustre.h>
-#endif
#include <libcfs/libcfs.h>
#include <obd_support.h>
#include <obd_class.h>
+#include <lnet/lnetctl.h>
#include <lprocfs_status.h>
+#include <lustre_ioctl.h>
#include <lustre_ver.h>
#include <lustre/lustre_build_version.h>
-#ifdef __KERNEL__
-#include <linux/lustre_version.h>
int proc_version;
/* buffer MUST be at least the size of obd_ioctl_hdr */
-int obd_ioctl_getdata(char **buf, int *len, void *arg)
+int obd_ioctl_getdata(char **buf, int *len, void __user *arg)
{
- struct obd_ioctl_hdr hdr;
- struct obd_ioctl_data *data;
- int err;
- int offset = 0;
- ENTRY;
+ struct obd_ioctl_hdr hdr;
+ struct obd_ioctl_data *data;
+ int offset = 0;
+ ENTRY;
- err = copy_from_user(&hdr, (void *)arg, sizeof(hdr));
- if ( err )
- RETURN(err);
+ if (copy_from_user(&hdr, arg, sizeof(hdr)))
+ RETURN(-EFAULT);
if (hdr.ioc_version != OBD_IOCTL_VERSION) {
CERROR("Version mismatch kernel (%x) vs application (%x)\n",
RETURN(-EINVAL);
}
- /* XXX allocate this more intelligently, using kmalloc when
- * appropriate */
- OBD_VMALLOC(*buf, hdr.ioc_len);
+ /* When there are lots of processes calling vmalloc on multi-core
+ * system, the high lock contention will hurt performance badly,
+ * obdfilter-survey is an example, which relies on ioctl. So we'd
+ * better avoid vmalloc on ioctl path. LU-66 */
+ OBD_ALLOC_LARGE(*buf, hdr.ioc_len);
if (*buf == NULL) {
CERROR("Cannot allocate control buffer of len %d\n",
hdr.ioc_len);
*len = hdr.ioc_len;
data = (struct obd_ioctl_data *)*buf;
- err = copy_from_user(*buf, (void *)arg, hdr.ioc_len);
- if ( err ) {
- OBD_VFREE(*buf, hdr.ioc_len);
- RETURN(err);
- }
+ if (copy_from_user(*buf, arg, hdr.ioc_len)) {
+ OBD_FREE_LARGE(*buf, hdr.ioc_len);
+ RETURN(-EFAULT);
+ }
if (obd_ioctl_is_invalid(data)) {
CERROR("ioctl not correctly formatted\n");
- OBD_VFREE(*buf, hdr.ioc_len);
+ OBD_FREE_LARGE(*buf, hdr.ioc_len);
RETURN(-EINVAL);
}
if (data->ioc_inllen1) {
data->ioc_inlbuf1 = &data->ioc_bulk[0];
- offset += size_round(data->ioc_inllen1);
+ offset += cfs_size_round(data->ioc_inllen1);
}
if (data->ioc_inllen2) {
data->ioc_inlbuf2 = &data->ioc_bulk[0] + offset;
- offset += size_round(data->ioc_inllen2);
+ offset += cfs_size_round(data->ioc_inllen2);
}
if (data->ioc_inllen3) {
data->ioc_inlbuf3 = &data->ioc_bulk[0] + offset;
- offset += size_round(data->ioc_inllen3);
+ offset += cfs_size_round(data->ioc_inllen3);
}
- if (data->ioc_inllen4) {
- data->ioc_inlbuf4 = &data->ioc_bulk[0] + offset;
- }
+ if (data->ioc_inllen4)
+ data->ioc_inlbuf4 = &data->ioc_bulk[0] + offset;
- EXIT;
- return 0;
+ RETURN(0);
}
+EXPORT_SYMBOL(obd_ioctl_getdata);
-int obd_ioctl_popdata(void *arg, void *data, int len)
+int obd_ioctl_popdata(void __user *arg, void *data, int len)
{
- int err;
-
- err = copy_to_user(arg, data, len);
- if (err)
- err = -EFAULT;
- return err;
-}
+ int err;
+ ENTRY;
-EXPORT_SYMBOL(obd_ioctl_getdata);
+ err = copy_to_user(arg, data, len) ? -EFAULT : 0;
+ RETURN(err);
+}
EXPORT_SYMBOL(obd_ioctl_popdata);
-#define OBD_MINOR 241
-extern struct cfs_psdev_ops obd_psdev_ops;
-
/* opening /dev/obd */
static int obd_class_open(struct inode * inode, struct file * file)
{
- if (obd_psdev_ops.p_open != NULL)
- return obd_psdev_ops.p_open(0, NULL);
- return -EPERM;
+ ENTRY;
+
+ try_module_get(THIS_MODULE);
+ RETURN(0);
}
/* closing /dev/obd */
static int obd_class_release(struct inode * inode, struct file * file)
{
- if (obd_psdev_ops.p_close != NULL)
- return obd_psdev_ops.p_close(0, NULL);
- return -EPERM;
+ ENTRY;
+
+ module_put(THIS_MODULE);
+ RETURN(0);
}
/* to control /dev/obd */
-static int obd_class_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+static long obd_class_ioctl(struct file *filp, unsigned int cmd,
+ unsigned long arg)
{
int err = 0;
ENTRY;
- if (current->fsuid != 0)
+ /* Allow non-root access for OBD_IOC_PING_TARGET - used by lfs check */
+ if (!cfs_capable(CFS_CAP_SYS_ADMIN) && (cmd != OBD_IOC_PING_TARGET))
RETURN(err = -EACCES);
if ((cmd & 0xffffff00) == ((int)'T') << 8) /* ignore all tty ioctls */
RETURN(err = -ENOTTY);
- if (obd_psdev_ops.p_ioctl != NULL)
- err = obd_psdev_ops.p_ioctl(NULL, cmd, (void *)arg);
- else
- err = -EPERM;
+ err = class_handle_ioctl(cmd, (unsigned long)arg);
RETURN(err);
}
/* declare character device */
static struct file_operations obd_psdev_fops = {
- .owner = THIS_MODULE,
- .ioctl = obd_class_ioctl, /* ioctl */
- .open = obd_class_open, /* open */
- .release = obd_class_release, /* release */
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = obd_class_ioctl, /* unlocked_ioctl */
+ .open = obd_class_open, /* open */
+ .release = obd_class_release, /* release */
};
/* modules setup */
-cfs_psdev_t obd_psdev = {
- .minor = OBD_MINOR,
- .name = "obd_psdev",
+struct miscdevice obd_psdev = {
+ .minor = OBD_DEV_MINOR,
+ .name = OBD_DEV_NAME,
.fops = &obd_psdev_fops,
};
-#endif
#ifdef LPROCFS
-int obd_proc_read_version(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+static int obd_proc_version_seq_show(struct seq_file *m, void *v)
{
- *eof = 1;
-#ifdef HAVE_VFS_INTENT_PATCHES
- return snprintf(page, count, "lustre: %s\nkernel: %u\nbuild: %s\n",
- LUSTRE_VERSION_STRING, LUSTRE_KERNEL_VERSION,
- BUILD_VERSION);
-#else
- return snprintf(page, count, "lustre: %s\nkernel: %s\nbuild: %s\n",
- LUSTRE_VERSION_STRING, "patchless", BUILD_VERSION);
-#endif
+ return seq_printf(m, "lustre: %s\nkernel: %s\nbuild: %s\n",
+ LUSTRE_VERSION_STRING, "patchless_client",
+ BUILD_VERSION);
}
+LPROC_SEQ_FOPS_RO(obd_proc_version);
-int obd_proc_read_pinger(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+static int obd_proc_pinger_seq_show(struct seq_file *m, void *v)
{
- *eof = 1;
- return snprintf(page, count, "%s\n",
+ return seq_printf(m, "%s\n",
#ifdef ENABLE_PINGER
- "on"
+ "on"
#else
- "off"
+ "off"
#endif
- );
+ );
+}
+LPROC_SEQ_FOPS_RO(obd_proc_pinger);
+
+/**
+ * Check all obd devices health
+ *
+ * \param seq_file
+ * \param data [in] unused
+ *
+ * \retval number of characters printed if healthy
+ */
+static int obd_proc_health_seq_show(struct seq_file *m, void *data)
+{
+ bool healthy = true;
+ int i;
+
+ if (libcfs_catastrophe)
+ seq_printf(m, "LBUG\n");
+
+ read_lock(&obd_dev_lock);
+ for (i = 0; i < class_devno_max(); i++) {
+ struct obd_device *obd;
+
+ obd = class_num2obd(i);
+ if (obd == NULL || !obd->obd_attached || !obd->obd_set_up)
+ continue;
+
+ LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
+ if (obd->obd_stopping)
+ continue;
+
+ class_incref(obd, __FUNCTION__, current);
+ read_unlock(&obd_dev_lock);
+
+ if (obd_health_check(NULL, obd)) {
+ seq_printf(m, "device %s reported unhealthy\n",
+ obd->obd_name);
+ healthy = false;
+ }
+ class_decref(obd, __FUNCTION__, current);
+ read_lock(&obd_dev_lock);
+ }
+ read_unlock(&obd_dev_lock);
+
+ if (healthy)
+ return seq_printf(m, "healthy\n");
+
+ seq_printf(m, "NOT HEALTHY\n");
+ return 0;
}
+LPROC_SEQ_FOPS_RO(obd_proc_health);
-static int obd_proc_read_health(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+static int obd_proc_jobid_var_seq_show(struct seq_file *m, void *v)
{
- int rc = 0, i;
- *eof = 1;
-
- if (libcfs_catastrophe)
- rc += snprintf(page + rc, count - rc, "LBUG\n");
-
- spin_lock(&obd_dev_lock);
- for (i = 0; i < class_devno_max(); i++) {
- struct obd_device *obd;
-
- obd = class_num2obd(i);
- if (obd == NULL)
- continue;
-
- LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
- if (obd->obd_stopping)
- continue;
-
- class_incref(obd);
- spin_unlock(&obd_dev_lock);
-
- if (obd_health_check(obd)) {
- rc += snprintf(page + rc, count - rc,
- "device %s reported unhealthy\n",
- obd->obd_name);
- }
- class_decref(obd);
- spin_lock(&obd_dev_lock);
- }
- spin_unlock(&obd_dev_lock);
+ return seq_printf(m, "%s\n", obd_jobid_var);
+}
+
+static ssize_t
+obd_proc_jobid_var_seq_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ if (!count || count > JOBSTATS_JOBID_VAR_MAX_LEN)
+ return -EINVAL;
+
+ memset(obd_jobid_var, 0, JOBSTATS_JOBID_VAR_MAX_LEN + 1);
- if (rc == 0)
- return snprintf(page, count, "healthy\n");
+ /* This might leave the var invalid on error, which is probably fine.*/
+ if (copy_from_user(obd_jobid_var, buffer, count))
+ return -EFAULT;
- rc += snprintf(page + rc, count - rc, "NOT HEALTHY\n");
- return rc;
+ /* Trim the trailing '\n' if any */
+ if (obd_jobid_var[count - 1] == '\n')
+ obd_jobid_var[count - 1] = 0;
+
+ return count;
}
+LPROC_SEQ_FOPS(obd_proc_jobid_var);
/* Root for /proc/fs/lustre */
struct proc_dir_entry *proc_lustre_root = NULL;
-
-struct lprocfs_vars lprocfs_base[] = {
- { "version", obd_proc_read_version, NULL, NULL },
- { "pinger", obd_proc_read_pinger, NULL, NULL },
- { "health_check", obd_proc_read_health, NULL, NULL },
- { 0 }
+EXPORT_SYMBOL(proc_lustre_root);
+
+struct lprocfs_seq_vars lprocfs_base[] = {
+ { .name = "version",
+ .fops = &obd_proc_version_fops },
+ { .name = "pinger",
+ .fops = &obd_proc_pinger_fops },
+ { .name = "health_check",
+ .fops = &obd_proc_health_fops },
+ { .name = "jobid_var",
+ .fops = &obd_proc_jobid_var_fops},
+ { 0 }
};
#else
#define lprocfs_base NULL
#endif /* LPROCFS */
-#ifdef __KERNEL__
static void *obd_device_list_seq_start(struct seq_file *p, loff_t *pos)
{
if (*pos >= class_devno_max())
}
static void *obd_device_list_seq_next(struct seq_file *p, void *v, loff_t *pos)
-{
+{
++*pos;
if (*pos >= class_devno_max())
return NULL;
return seq_printf(p, "%3d %s %s %s %s %d\n",
(int)index, status, obd->obd_type->typ_name,
obd->obd_name, obd->obd_uuid.uuid,
- atomic_read(&obd->obd_refcount));
+ atomic_read(&obd->obd_refcount));
}
struct seq_operations obd_device_list_sops = {
static int obd_device_list_open(struct inode *inode, struct file *file)
{
- struct proc_dir_entry *dp = PDE(inode);
- struct seq_file *seq;
- int rc = seq_open(file, &obd_device_list_sops);
-
- if (rc)
- return rc;
+ struct seq_file *seq;
+ int rc = seq_open(file, &obd_device_list_sops);
- seq = file->private_data;
- seq->private = dp->data;
+ if (rc)
+ return rc;
- return 0;
+ seq = file->private_data;
+ seq->private = PDE_DATA(inode);
+ return 0;
}
struct file_operations obd_device_list_fops = {
.llseek = seq_lseek,
.release = seq_release,
};
-#endif
int class_procfs_init(void)
{
-#ifdef __KERNEL__
- int rc;
- ENTRY;
+ struct proc_dir_entry *entry;
+ int rc;
+ ENTRY;
- obd_sysctl_init();
- proc_lustre_root = lprocfs_register("lustre", proc_root_fs,
- lprocfs_base, NULL);
- rc = lprocfs_seq_create(proc_lustre_root, "devices", 0444,
- &obd_device_list_fops, NULL);
- if (rc)
- CERROR("error adding /proc/fs/lustre/devices file\n");
-#else
- ENTRY;
-#endif
- RETURN(0);
+ obd_sysctl_init();
+
+ entry = lprocfs_seq_register("fs/lustre", NULL, lprocfs_base, NULL);
+ if (IS_ERR(entry)) {
+ rc = PTR_ERR(entry);
+ CERROR("cannot create '/proc/fs/lustre': rc = %d\n", rc);
+ RETURN(rc);
+ }
+
+ proc_lustre_root = entry;
+
+ rc = lprocfs_seq_create(proc_lustre_root, "devices", 0444,
+ &obd_device_list_fops, NULL);
+ if (rc < 0) {
+ CERROR("cannot create '/proc/fs/lustre/devices': rc = %d\n",
+ rc);
+ GOTO(out_proc, rc);
+ }
+
+ RETURN(rc);
+
+out_proc:
+ lprocfs_remove(&proc_lustre_root);
+
+ RETURN(rc);
}
-#ifdef __KERNEL__
int class_procfs_clean(void)
{
ENTRY;
}
RETURN(0);
}
-
-
-/* Check that we're building against the appropriate version of the Lustre
- * kernel patch */
-#include <linux/lustre_version.h>
-#ifdef LUSTRE_KERNEL_VERSION
-#define LUSTRE_MIN_VERSION 45
-#define LUSTRE_MAX_VERSION 47
-#if (LUSTRE_KERNEL_VERSION < LUSTRE_MIN_VERSION)
-# error Cannot continue: Your Lustre kernel patch is older than the sources
-#elif (LUSTRE_KERNEL_VERSION > LUSTRE_MAX_VERSION)
-# error Cannot continue: Your Lustre sources are older than the kernel patch
-#endif
-#endif
-#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff