-/*
- * file.c
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * lustre/smfs/inode.c
+ * Lustre filesystem abstraction routines
+ *
+ * Copyright (C) 2004 Cluster File Systems, Inc.
+ *
+ * This file is part of Lustre, http://www.lustre.org.
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * 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.
*/
#define DEBUG_SUBSYSTEM S_SM
#include <linux/stat.h>
#include <linux/unistd.h>
#include <linux/pagemap.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/obd_class.h>
+#include <linux/obd_support.h>
+#include <linux/lustre_lib.h>
#include <linux/lustre_idl.h>
-#include "smfs_internal.h"
-
-/* instantiate a file handle to the cache file */
-void smfs_prepare_cachefile(struct inode *inode,
- struct file *file,
- struct inode *cache_inode,
- struct file *cache_file,
- struct dentry *cache_dentry)
+#include <linux/lustre_fsfilt.h>
+#include <linux/lustre_smfs.h>
+#include <linux/lustre_snap.h>
+
+#include "smfs_internal.h"
+
+static ssize_t smfs_write(struct file *filp, const char *buf, size_t count,
+ loff_t *ppos)
{
- ENTRY;
- cache_file->f_pos = file->f_pos;
- cache_file->f_mode = file->f_mode;
- cache_file->f_flags = file->f_flags;
- cache_file->f_count = file->f_count;
- cache_file->f_owner = file->f_owner;
- cache_file->f_error = file->f_error;
- cache_file->f_op = inode->i_fop;
- cache_file->f_dentry = cache_dentry;
- cache_file->f_dentry->d_inode = cache_inode;
- cache_file->f_vfsmnt = file->f_vfsmnt;
- cache_file->private_data = file->private_data;
- cache_file->f_it = file->f_it;
- cache_file->f_reada = file->f_reada;
- cache_file->f_ramax = file->f_ramax;
- cache_file->f_raend = file->f_raend;
- cache_file->f_ralen = file->f_ralen;
- cache_file->f_rawin = file->f_rawin;
- EXIT;
+ struct inode *cache_inode = I2CI(filp->f_dentry->d_inode);
+ struct smfs_file_info *sfi;
+ loff_t *cache_ppos = NULL;
+ int rc = 0;
+ struct hook_write_msg msg = {
+ .dentry = filp->f_dentry,
+ .count = count,
+ .pos = *ppos
+ };
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_fop->write);
+
+ sfi = F2SMFI(filp);
+ LASSERT(sfi->magic == SMFS_FILE_MAGIC);
+
+ if (filp->f_flags & O_APPEND)
+ msg.pos = filp->f_dentry->d_inode->i_size;
+
+ pre_smfs_file(filp, &msg.pos, &cache_ppos);
+ SMFS_PRE_HOOK(filp->f_dentry->d_inode, HOOK_WRITE, &msg);
+
+ rc = cache_inode->i_fop->write(sfi->c_file, buf, count,
+ cache_ppos);
+
+ SMFS_POST_HOOK(filp->f_dentry->d_inode, HOOK_WRITE, &msg, rc);
+ post_smfs_file(filp);
+ *ppos = *cache_ppos;
+
+ RETURN(rc);
}
-/* update file structs*/
-void smfs_update_file(struct file *file,
- struct file *cache_file)
+
+int smfs_ioctl(struct inode * inode, struct file * filp,
+ unsigned int cmd, unsigned long arg)
{
- ENTRY;
- file->f_pos = cache_file->f_pos;
- file->f_mode = cache_file->f_mode;
- file->f_flags = cache_file->f_flags;
- file->f_count = cache_file->f_count;
- file->f_owner = cache_file->f_owner;
- file->f_reada = cache_file->f_reada;
- file->f_ramax = cache_file->f_ramax;
- file->f_raend = cache_file->f_raend;
- file->f_ralen = cache_file->f_ralen;
- file->f_rawin = cache_file->f_rawin;
- EXIT;
+ struct inode *cache_inode = I2CI(filp->f_dentry->d_inode);
+ struct smfs_file_info *sfi;
+ ssize_t rc = 0;
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_fop->ioctl);
+
+ sfi = F2SMFI(filp);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+
+ pre_smfs_inode(inode, cache_inode);
+
+ rc = cache_inode->i_fop->ioctl(cache_inode, sfi->c_file, cmd, arg);
+
+ post_smfs_inode(inode, cache_inode);
+ duplicate_file(filp, sfi->c_file);
+
+ RETURN(rc);
}
-static ssize_t smfs_write (struct file *filp, const char *buf,
- size_t count, loff_t *ppos)
+static ssize_t smfs_read(struct file *filp, char *buf,
+ size_t count, loff_t *ppos)
{
- struct inode *cache_inode;
- struct dentry *dentry = filp->f_dentry;
- struct inode *inode = dentry->d_inode;
- struct file open_file;
- struct dentry open_dentry;
- loff_t tmp_ppos;
- loff_t *cache_ppos;
- int rc = 0;
-
- ENTRY;
-
- cache_inode = I2CI(inode);
-
- if (!cache_inode)
- RETURN(-ENOENT);
-
- if (ppos != &(filp->f_pos)) {
- cache_ppos = &tmp_ppos;
- } else {
- cache_ppos = &open_file.f_pos;
- }
- *cache_ppos = *ppos;
-
- smfs_prepare_cachefile(inode, filp, cache_inode,
- &open_file, &open_dentry);
- if (cache_inode->i_fop->write)
- rc = cache_inode->i_fop->write(&open_file, buf, count, cache_ppos);
-
- *ppos = *cache_ppos;
- post_smfs_inode(inode, cache_inode);
- smfs_update_file(filp, &open_file);
-
- RETURN(rc);
+ struct inode *cache_inode = I2CI(filp->f_dentry->d_inode);
+ struct smfs_file_info *sfi;
+ loff_t *cache_ppos = NULL;
+ ssize_t rc = 0;
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_fop->read);
+
+ sfi = F2SMFI(filp);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+
+ pre_smfs_file(filp, ppos, &cache_ppos);
+ rc = cache_inode->i_fop->read(sfi->c_file, buf, count, cache_ppos);
+ post_smfs_file(filp);
+
+ RETURN(rc);
}
-int smfs_ioctl(struct inode * inode, struct file * filp,
- unsigned int cmd, unsigned long arg)
+static loff_t smfs_llseek(struct file *file, loff_t offset, int origin)
{
- struct inode *cache_inode;
- struct dentry *dentry = filp->f_dentry;
- struct file open_file;
- struct dentry open_dentry;
- ssize_t rc = 0;
-
- ENTRY;
-
- cache_inode = I2CI(dentry->d_inode);
- if (!cache_inode)
- RETURN(-ENOENT);
-
- smfs_prepare_cachefile(inode, filp, cache_inode,
- &open_file, &open_dentry);
-
- if (cache_inode->i_fop->ioctl)
- rc = cache_inode->i_fop->ioctl(cache_inode, &open_file, cmd, arg);
-
- post_smfs_inode(inode, cache_inode);
- smfs_update_file(filp, &open_file);
+ struct inode *cache_inode = I2CI(file->f_dentry->d_inode);
+ struct smfs_file_info *sfi;
+ ssize_t rc = 0;
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_fop->llseek);
+
+ sfi = F2SMFI(file);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+
+ pre_smfs_inode(file->f_dentry->d_inode, cache_inode);
+
+ rc = cache_inode->i_fop->llseek(sfi->c_file, offset, origin);
+
+ post_smfs_inode(file->f_dentry->d_inode, cache_inode);
+ duplicate_file(file, sfi->c_file);
+
RETURN(rc);
}
-static ssize_t smfs_read (struct file *filp, char *buf,
- size_t count, loff_t *ppos)
+static int smfs_mmap(struct file *file, struct vm_area_struct *vma)
{
- struct inode *cache_inode;
- struct dentry *dentry = filp->f_dentry;
- struct inode *inode = dentry->d_inode;
- struct file open_file;
- struct dentry open_dentry;
- loff_t tmp_ppos;
- loff_t *cache_ppos;
- ssize_t rc = 0;
-
- ENTRY;
-
- cache_inode = I2CI(dentry->d_inode);
- if (!cache_inode)
- RETURN(-ENOENT);
-
- if (ppos != &(filp->f_pos)) {
- cache_ppos = &tmp_ppos;
- } else {
- cache_ppos = &open_file.f_pos;
- }
- *cache_ppos = *ppos;
-
-
- smfs_prepare_cachefile(inode, filp, cache_inode,
- &open_file, &open_dentry);
-
-
- if (cache_inode->i_fop->read)
- rc = cache_inode->i_fop->read(&open_file, buf, count, cache_ppos);
-
- *ppos = *cache_ppos;
- post_smfs_inode(inode, cache_inode);
- smfs_update_file(filp, &open_file);
- RETURN(rc);
+ struct inode *inode = file->f_dentry->d_inode;
+ struct smfs_file_info *sfi;
+ struct inode *cache_inode = I2CI(inode);
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(cache_inode);
+
+ sfi = F2SMFI(file);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+
+ if (cache_inode->i_mapping == &cache_inode->i_data)
+ inode->i_mapping = cache_inode->i_mapping;
+
+ pre_smfs_inode(inode, cache_inode);
+
+ rc = cache_inode->i_fop->mmap(sfi->c_file, vma);
+
+ post_smfs_inode(inode, cache_inode);
+ duplicate_file(file, sfi->c_file);
+
+ RETURN(rc);
}
-static loff_t smfs_llseek(struct file *file,
- loff_t offset,
- int origin)
+static int smfs_init_cache_file(struct inode *inode, struct file *filp)
{
- struct inode *cache_inode;
- struct dentry *dentry = file->f_dentry;
- struct file open_file;
- struct dentry open_dentry;
- ssize_t rc = 0;
-
- ENTRY;
-
- cache_inode = I2CI(dentry->d_inode);
- if (!cache_inode)
- RETURN(-ENOENT);
-
- smfs_prepare_cachefile(dentry->d_inode, file, cache_inode,
- &open_file, &open_dentry);
-
- if (cache_inode->i_fop->llseek)
- rc = cache_inode->i_fop->llseek(&open_file, offset, origin);
-
- post_smfs_inode(dentry->d_inode, cache_inode);
- smfs_update_file(file, &open_file);
-
+ struct smfs_file_info *sfi = NULL;
+ struct file *cache_filp = NULL;
+ struct dentry *cache_dentry = NULL;
+ int rc = 0;
+ ENTRY;
+
+ OBD_ALLOC(sfi, sizeof(struct smfs_file_info));
+ if (!sfi)
+ RETURN(-ENOMEM);
+
+ cache_filp = get_empty_filp();
+ if (!cache_filp) {
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+
+ sfi->magic = SMFS_FILE_MAGIC;
+
+ cache_dentry = pre_smfs_dentry(NULL, I2CI(inode), filp->f_dentry);
+ if (!cache_dentry) {
+ rc = -ENOMEM;
+ goto err_exit;
+ }
+
+ cache_filp->f_vfsmnt = filp->f_vfsmnt;
+ cache_filp->f_dentry = cache_dentry;
+ duplicate_file(cache_filp, filp);
+ sfi->c_file = cache_filp;
+
+ if (filp->private_data != NULL)
+ LBUG();
+
+ filp->private_data = sfi;
+
+ RETURN(0);
+err_exit:
+ if (sfi)
+ OBD_FREE(sfi, sizeof(struct smfs_file_info));
+ if (cache_filp)
+ put_filp(cache_filp);
RETURN(rc);
}
-static int smfs_mmap(struct file * file, struct vm_area_struct * vma)
+static int smfs_cleanup_cache_file(struct file *filp)
{
- struct inode *inode = file->f_dentry->d_inode;
- struct inode *cache_inode = NULL;
- struct file open_file;
- struct dentry open_dentry;
- int rc = 0;
-
- cache_inode = I2CI(inode);
- if (!cache_inode)
- RETURN(-ENOENT);
-
- smfs_prepare_cachefile(inode, file, cache_inode,
- &open_file, &open_dentry);
-
- if (cache_inode->i_mapping == &cache_inode->i_data)
- inode->i_mapping = cache_inode->i_mapping;
+ struct smfs_file_info *sfi = NULL;
+
+ ENTRY;
- if (cache_inode->i_fop->mmap)
- rc = cache_inode->i_fop->mmap(&open_file, vma);
-
- post_smfs_inode(inode, cache_inode);
- smfs_update_file(file, &open_file);
-
- RETURN(rc);
+ if (!filp)
+ RETURN(0);
+
+ sfi = F2SMFI(filp);
+
+ post_smfs_dentry(sfi->c_file->f_dentry);
+
+ put_filp(sfi->c_file);
+
+ OBD_FREE(sfi, sizeof(struct smfs_file_info));
+
+ filp->private_data = NULL;
+
+ RETURN(0);
}
-static int smfs_open(struct inode * inode, struct file * filp)
+int smfs_open(struct inode *inode, struct file *filp)
{
- struct inode *cache_inode = NULL;
- struct file open_file;
- struct dentry open_dentry;
- int rc = 0;
-
- cache_inode = I2CI(inode);
- if (!cache_inode)
- RETURN(-ENOENT);
-
- smfs_prepare_cachefile(inode, filp, cache_inode,
- &open_file, &open_dentry);
-
- if (cache_inode->i_fop->open)
- rc = cache_inode->i_fop->open(cache_inode, &open_file);
-
- post_smfs_inode(inode, cache_inode);
- smfs_update_file(filp, &open_file);
-
- RETURN(rc);
+ struct inode *cache_inode = I2CI(inode);
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+
+ if ((rc = smfs_init_cache_file(inode, filp)))
+ RETURN(rc);
+ //it possible that backstore fs has no open(),
+ //but we need it to init cache filp
+ if (cache_inode->i_fop->open) {
+ rc = cache_inode->i_fop->open(cache_inode, F2CF(filp));
+ duplicate_file(filp, F2CF(filp));
+ }
+ RETURN(rc);
}
-static int smfs_release(struct inode * inode, struct file * filp)
+
+int smfs_release(struct inode *inode, struct file *filp)
{
- struct inode *cache_inode = NULL;
- struct file open_file;
- struct dentry open_dentry;
- int rc = 0;
+ struct inode *cache_inode = I2CI(inode);
+ struct file *cache_file = NULL;
+ struct smfs_file_info *sfi = NULL;
+ int rc = 0;
+
+ ENTRY;
- cache_inode = I2CI(inode);
- if (!cache_inode)
- RETURN(-ENOENT);
-
- smfs_prepare_cachefile(inode, filp, cache_inode,
- &open_file, &open_dentry);
+ LASSERT(cache_inode);
+
+ if (filp) {
+ sfi = F2SMFI(filp);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+ cache_file = sfi->c_file;
+ }
+
+ if (cache_inode->i_fop->release)
+ rc = cache_inode->i_fop->release(cache_inode, cache_file);
- if (cache_inode->i_fop->release)
- rc = cache_inode->i_fop->release(cache_inode, &open_file);
+ post_smfs_inode(inode, cache_inode);
- post_smfs_inode(inode, cache_inode);
- smfs_update_file(filp, &open_file);
+ smfs_cleanup_cache_file(filp);
- RETURN(rc);
+ RETURN(rc);
}
-int smfs_fsync(struct file * file,
- struct dentry *dentry,
- int datasync)
+
+int smfs_fsync(struct file *file, struct dentry *dentry, int datasync)
{
- struct inode *inode = dentry->d_inode;
- struct inode *cache_inode;
- struct file open_file;
- struct dentry open_dentry;
- int rc = 0;
-
- cache_inode = I2CI(inode);
- if (!cache_inode)
- RETURN(-ENOENT);
-
- smfs_prepare_cachefile(inode, file, cache_inode,
- &open_file, &open_dentry);
-
- if (cache_inode->i_fop->fsync)
- rc = cache_inode->i_fop->fsync(&open_file, &open_dentry, datasync);
-
- post_smfs_inode(inode, cache_inode);
- smfs_update_file(file, &open_file);
-
- RETURN(rc);
+ struct smfs_file_info *sfi = NULL;
+ struct dentry *cache_dentry = NULL;
+ struct file *cache_file = NULL;
+ struct inode *cache_inode = I2CI(dentry->d_inode);
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_fop->fsync);
+
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
+
+ if (file) {
+ sfi = F2SMFI(file);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+ cache_file = sfi->c_file;
+ }
+
+ pre_smfs_inode(dentry->d_inode, cache_inode);
+
+ rc = cache_inode->i_fop->fsync(cache_file,
+ cache_dentry, datasync);
+
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ duplicate_file(file, cache_file);
+ post_smfs_dentry(cache_dentry);
+
+ RETURN(rc);
}
struct file_operations smfs_file_fops = {
- llseek: smfs_llseek,
- read: smfs_read,
- write: smfs_write,
- ioctl: smfs_ioctl,
- mmap: smfs_mmap,
- open: smfs_open,
- release: smfs_release,
- fsync: smfs_fsync,
+ llseek: smfs_llseek,
+ read: smfs_read,
+ write: smfs_write,
+ ioctl: smfs_ioctl,
+ mmap: smfs_mmap,
+ open: smfs_open,
+ release: smfs_release,
+ fsync: smfs_fsync,
};
-static void smfs_prepare_cache_dentry(struct dentry *dentry, struct inode *inode)
+static void smfs_truncate(struct inode *inode)
{
- atomic_set(&dentry->d_count, 1);
- dentry->d_vfs_flags = 0;
- dentry->d_flags = 0;
- dentry->d_inode = inode;
- dentry->d_op = NULL;
- dentry->d_fsdata = NULL;
- dentry->d_mounted = 0;
- INIT_LIST_HEAD(&dentry->d_hash);
- INIT_LIST_HEAD(&dentry->d_lru);
- INIT_LIST_HEAD(&dentry->d_subdirs);
- INIT_LIST_HEAD(&dentry->d_alias);
+ struct inode *cache_inode = I2CI(inode);
+
+ if (!cache_inode || !cache_inode->i_op->truncate)
+ return;
+
+ pre_smfs_inode(inode, cache_inode);
+
+ cache_inode->i_op->truncate(cache_inode);
+
+ post_smfs_inode(inode, cache_inode);
+
+ return;
}
-static void smfs_truncate(struct inode * inode)
+int smfs_setattr(struct dentry *dentry, struct iattr *attr)
{
- struct inode *cache_inode;
+ struct inode *cache_inode = I2CI(dentry->d_inode);
+ struct dentry *cache_dentry;
+ void *handle = NULL;
+ int rc = 0;
+ struct hook_attr_msg msg = {
+ .dentry = dentry,
+ .attr = attr,
+ };
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_op->setattr);
- cache_inode = I2CI(inode);
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
- if (!cache_inode)
- return;
-
- if (cache_inode->i_op->truncate)
- cache_inode->i_op->truncate(cache_inode);
+ handle = smfs_trans_start(dentry->d_inode, FSFILT_OP_SETATTR, NULL);
+ if (IS_ERR(handle) ) {
+ rc = -ENOSPC;
+ goto exit;
+ }
- post_smfs_inode(inode, cache_inode);
+ pre_smfs_inode(dentry->d_inode, cache_inode);
- return;
-}
-
-int smfs_setattr(struct dentry *dentry, struct iattr *attr)
-{
- struct inode *cache_inode;
- struct dentry open_dentry;
-
- int rc = 0;
-
- cache_inode = I2CI(dentry->d_inode);
-
- if (!cache_inode)
- RETURN(-ENOENT);
- smfs_prepare_cache_dentry(&open_dentry, cache_inode);
-
- pre_smfs_inode(dentry->d_inode, cache_inode);
- if (cache_inode->i_op->setattr)
- rc = cache_inode->i_op->setattr(&open_dentry, attr);
-
- post_smfs_inode(dentry->d_inode, cache_inode);
-
- RETURN(rc);
-}
-
+ SMFS_PRE_HOOK(dentry->d_inode, HOOK_SETATTR, &msg);
+
+ rc = cache_inode->i_op->setattr(cache_dentry, attr);
+
+ SMFS_POST_HOOK(dentry->d_inode, HOOK_SETATTR, &msg, rc);
+
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ smfs_trans_commit(dentry->d_inode, handle, 0);
+exit:
+ post_smfs_dentry(cache_dentry);
+ RETURN(rc);
+}
+
int smfs_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
+ const void *value, size_t size, int flags)
{
- struct inode *cache_inode;
- struct dentry open_dentry;
- int rc = 0;
+ struct inode *cache_inode = I2CI(dentry->d_inode);
+ struct dentry *cache_dentry = NULL;
+ struct hook_xattr_msg msg = {
+ .name = (char*)name,
+ };
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_op->setxattr);
+
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
+
+ pre_smfs_inode(dentry->d_inode, cache_inode);
+ SMFS_PRE_HOOK(dentry->d_inode, HOOK_SETXATTR, &msg);
- cache_inode = I2CI(dentry->d_inode);
+ rc = cache_inode->i_op->setxattr(cache_dentry, name, value,
+ size, flags);
+
+ SMFS_POST_HOOK(dentry->d_inode, HOOK_SETXATTR, &msg, rc);
- if (!cache_inode)
- RETURN(-ENOENT);
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
- pre_smfs_inode(dentry->d_inode, cache_inode);
- smfs_prepare_cache_dentry(&open_dentry, cache_inode);
-
- if (cache_inode->i_op->setattr)
- rc = cache_inode->i_op->setxattr(&open_dentry, name, value, size, flags);
+ RETURN(rc);
+}
- post_smfs_inode(dentry->d_inode, cache_inode);
- RETURN(rc);
-}
-
int smfs_getxattr(struct dentry *dentry, const char *name,
- void *buffer, size_t size)
+ void *buffer, size_t size)
+{
+ struct inode *cache_inode = I2CI(dentry->d_inode);
+ struct dentry *cache_dentry;
+ struct hook_xattr_msg msg = {
+ .name = (char*)name,
+ };
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_op->getxattr);
+
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
+
+ pre_smfs_inode(dentry->d_inode, cache_inode);
+ SMFS_PRE_HOOK(dentry->d_inode, HOOK_GETXATTR, &msg);
+ rc = cache_inode->i_op->getxattr(cache_dentry, name, buffer,
+ size);
+ SMFS_POST_HOOK(dentry->d_inode, HOOK_GETXATTR, &msg, rc);
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
+
+ RETURN(rc);
+}
+
+ssize_t smfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
{
- struct inode *cache_inode;
- struct dentry open_dentry;
- int rc = 0;
+ struct inode *cache_inode = I2CI(dentry->d_inode);
+ struct dentry *cache_dentry;
+ int rc = 0;
+ struct hook_xattr_msg msg = {
+ .name = NULL,
+ };
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_op->listxattr);
+
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
- cache_inode = I2CI(dentry->d_inode);
+ pre_smfs_inode(dentry->d_inode, cache_inode);
+ SMFS_PRE_HOOK(dentry->d_inode, HOOK_LISTXATTR, &msg);
- if (!cache_inode)
- RETURN(-ENOENT);
+ rc = cache_inode->i_op->listxattr(cache_dentry, buffer, size);
- smfs_prepare_cache_dentry(&open_dentry, cache_inode);
- pre_smfs_inode(dentry->d_inode, cache_inode);
-
- if (cache_inode->i_op->setattr)
- rc = cache_inode->i_op->getxattr(&open_dentry, name, buffer, size);
+ SMFS_POST_HOOK(dentry->d_inode, HOOK_LISTXATTR, &msg, rc);
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
- post_smfs_inode(dentry->d_inode, cache_inode);
- RETURN(rc);
+ RETURN(rc);
}
-ssize_t smfs_listxattr(struct dentry *dentry, char *buffer, size_t size)
+int smfs_removexattr(struct dentry *dentry, const char *name)
{
- struct inode *cache_inode;
- struct dentry open_dentry;
- int rc = 0;
+ struct inode *cache_inode = I2CI(dentry->d_inode);
+ struct dentry *cache_dentry;
+ int rc = 0;
+ struct hook_xattr_msg msg = {
+ .name = (char*)name,
+ };
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_op->removexattr);
- cache_inode = I2CI(dentry->d_inode);
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
- if (!cache_inode)
- RETURN(-ENOENT);
+ pre_smfs_inode(dentry->d_inode, cache_inode);
+ SMFS_PRE_HOOK(dentry->d_inode, HOOK_REMOVEXATTR, &msg);
- smfs_prepare_cache_dentry(&open_dentry, cache_inode);
- pre_smfs_inode(dentry->d_inode, cache_inode);
-
- if (cache_inode->i_op->listxattr)
- rc = cache_inode->i_op->listxattr(&open_dentry, buffer, size);
+ rc = cache_inode->i_op->removexattr(cache_dentry, name);
- post_smfs_inode(dentry->d_inode, cache_inode);
- RETURN(rc);
-}
+ SMFS_POST_HOOK(dentry->d_inode, HOOK_REMOVEXATTR, &msg, rc);
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
-int smfs_removexattr(struct dentry *dentry, const char *name)
+ RETURN(rc);
+}
+
+int smfs_permission(struct inode *inode, int mask, struct nameidata *nd)
{
- struct inode *cache_inode;
- struct dentry open_dentry;
- int rc = 0;
+ struct inode *cache_inode = I2CI(inode);
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(cache_inode);
+ LASSERT(cache_inode->i_op->permission);
- cache_inode = I2CI(dentry->d_inode);
+ pre_smfs_inode(inode, cache_inode);
- if (!cache_inode)
- RETURN(-ENOENT);
+ rc = cache_inode->i_op->permission(cache_inode, mask, nd);
- smfs_prepare_cache_dentry(&open_dentry, cache_inode);
- pre_smfs_inode(dentry->d_inode, cache_inode);
-
- if (cache_inode->i_op->removexattr)
- rc = cache_inode->i_op->removexattr(&open_dentry, name);
+ post_smfs_inode(inode, cache_inode);
- post_smfs_inode(dentry->d_inode, cache_inode);
- RETURN(rc);
+ RETURN(rc);
}
struct inode_operations smfs_file_iops = {
- truncate: smfs_truncate, /* BKL held */
- setattr: smfs_setattr, /* BKL held */
- setxattr: smfs_setxattr, /* BKL held */
- getxattr: smfs_getxattr, /* BKL held */
- listxattr: smfs_listxattr, /* BKL held */
- removexattr: smfs_removexattr, /* BKL held */
+ .truncate = smfs_truncate, /* BKL held */
+ .setattr = smfs_setattr, /* BKL held */
+ .setxattr = smfs_setxattr,
+ .getxattr = smfs_getxattr,
+ .listxattr = smfs_listxattr,
+ .removexattr = smfs_removexattr,
+ .permission = smfs_permission,
+};
+
+struct inode_operations smfs_special_iops = {
+ .setattr = smfs_setattr, /* BKL held */
+ .setxattr = smfs_setxattr,
+ .getxattr = smfs_getxattr,
+ .listxattr = smfs_listxattr,
+ .removexattr = smfs_removexattr,
+ .permission = smfs_permission,
};