-/*
- * 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 "smfs_internal.h"
-
-static int smfs_readpage(struct file *file,
- struct page *page)
+#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 <linux/lustre_fsfilt.h>
+#include <linux/lustre_smfs.h>
+
+#include "smfs_internal.h"
+
+static ssize_t smfs_write(struct file *filp, const char *buf, size_t count,
+ loff_t *ppos)
{
- struct inode *inode = page->mapping->host;
- struct inode *cache_inode;
- struct page *cache_page = NULL;
- int rc = 0;
-
- ENTRY;
-
- cache_inode = I2CI(inode);
-
- if (!cache_inode)
- RETURN(-ENOENT);
-
- cache_page = grab_cache_page(cache_inode->i_mapping, page->index);
-
- if (!cache_page)
- GOTO(exit_release, rc = -ENOMEM);
+ struct inode *cache_inode;
+ struct smfs_file_info *sfi;
+ loff_t tmp_ppos;
+ loff_t *cache_ppos;
+ int rc = 0;
+ ENTRY;
- if ((rc = cache_inode->i_mapping->a_ops->readpage(file, cache_page)))
- GOTO(exit_release, 0);
-
- wait_on_page(cache_page);
+ cache_inode = I2CI(filp->f_dentry->d_inode);
- if (!Page_Uptodate(cache_page))
- GOTO(exit_release, rc = -EIO);
+ if (!cache_inode)
+ RETURN(-ENOENT);
- memcpy(kmap(page), kmap(cache_page), PAGE_CACHE_SIZE);
+ sfi = F2SMFI(filp);
- flush_dcache_page(page);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
- kunmap(cache_page);
- page_cache_release(cache_page);
+ if (ppos != &(filp->f_pos)) {
+ cache_ppos = &tmp_ppos;
+ } else {
+ cache_ppos = &sfi->c_file->f_pos;
+ }
+ *cache_ppos = *ppos;
-exit:
- kunmap(page);
- SetPageUptodate(page);
- UnlockPage(page);
+ pre_smfs_inode(filp->f_dentry->d_inode, cache_inode);
- RETURN(rc);
+ if (cache_inode->i_fop->write) {
+ rc = cache_inode->i_fop->write(sfi->c_file, buf,
+ count, cache_ppos);
+ }
-exit_release:
- if (cache_page)
- page_cache_release(cache_page);
- UnlockPage(page);
- RETURN(rc);
+ SMFS_KML_POST(filp->f_dentry->d_inode, filp->f_dentry,
+ ppos, &count, REINT_WRITE, "write", rc, exit);
+exit:
+ post_smfs_inode(filp->f_dentry->d_inode, cache_inode);
+ *ppos = *cache_ppos;
+ duplicate_file(filp, sfi->c_file);
+ RETURN(rc);
}
-static int smfs_writepage(struct page *page)
+int smfs_ioctl(struct inode * inode, struct file * filp,
+ unsigned int cmd, unsigned long arg)
{
+ struct inode *cache_inode;
+ struct smfs_file_info *sfi;
+ ssize_t rc = 0;
- struct inode *inode = page->mapping->host;
- struct inode *cache_inode;
- int rc;
-
- ENTRY;
-
- cache_inode = I2CI(inode);
-
+ ENTRY;
+
+ cache_inode = I2CI(filp->f_dentry->d_inode);
if (!cache_inode)
RETURN(-ENOENT);
- if (cache_inode->i_mapping->a_ops->writepage)
- rc = cache_inode->i_mapping->a_ops->writepage(page);
-
- RETURN(rc);
-}
+ sfi = F2SMFI(filp);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
-static int smfs_sync_page(struct page *page)
-{
- struct inode *inode = page->mapping->host;
- struct inode *cache_inode;
- int rc = 0;
-
- cache_inode = I2CI(inode);
-
- if (!cache_inode)
- RETURN(-ENOENT);
+ pre_smfs_inode(inode, cache_inode);
+
+ if (cache_inode->i_fop->ioctl) {
+ rc = cache_inode->i_fop->ioctl(cache_inode,
+ sfi->c_file, cmd, arg);
+ }
- if (cache_inode->i_mapping->a_ops->sync_page)
- rc = cache_inode->i_mapping->a_ops->sync_page(page);
+ post_smfs_inode(inode, cache_inode);
+ duplicate_file(filp, sfi->c_file);
RETURN(rc);
}
-static int smfs_prepare_write(struct file *file, struct page *page,
- unsigned from, unsigned to)
+static ssize_t smfs_read(struct file *filp, char *buf,
+ size_t count, loff_t *ppos)
{
- struct inode *inode = page->mapping->host;
- struct inode *cache_inode;
- int rc = 0;
-
- cache_inode = I2CI(inode);
-
+ struct inode *cache_inode;
+ struct smfs_file_info *sfi;
+ loff_t tmp_ppos;
+ loff_t *cache_ppos;
+ ssize_t rc = 0;
+
+ ENTRY;
+
+ cache_inode = I2CI(filp->f_dentry->d_inode);
if (!cache_inode)
RETURN(-ENOENT);
- if (cache_inode->i_mapping->a_ops->prepare_write)
- rc = cache_inode->i_mapping->a_ops->prepare_write(file, page, from, to);
+ sfi = F2SMFI(filp);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+
+ if (ppos != &(filp->f_pos)) {
+ cache_ppos = &tmp_ppos;
+ } else {
+ cache_ppos = &sfi->c_file->f_pos;
+ }
+ *cache_ppos = *ppos;
+
+ pre_smfs_inode(filp->f_dentry->d_inode, cache_inode);
+
+ if (cache_inode->i_fop->read) {
+ rc = cache_inode->i_fop->read(sfi->c_file, buf,
+ count, cache_ppos);
+ }
+
+ *ppos = *cache_ppos;
+ post_smfs_inode(filp->f_dentry->d_inode, cache_inode);
+ duplicate_file(filp, sfi->c_file);
RETURN(rc);
}
-static int smfs_commit_write(struct file *file, struct page *page,
- unsigned from, unsigned to)
+static loff_t smfs_llseek(struct file *file,
+ loff_t offset,
+ int origin)
{
- struct inode *inode = page->mapping->host;
- struct inode *cache_inode;
- int rc = 0;
-
- cache_inode = I2CI(inode);
-
+ struct inode *cache_inode;
+ struct smfs_file_info *sfi;
+ ssize_t rc = 0;
+
+ ENTRY;
+
+ cache_inode = I2CI(file->f_dentry->d_inode);
if (!cache_inode)
RETURN(-ENOENT);
- if (cache_inode->i_mapping->a_ops->commit_write)
- rc = cache_inode->i_mapping->a_ops->commit_write(file, page, from, to);
+ sfi = F2SMFI(file);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+
+ pre_smfs_inode(file->f_dentry->d_inode, cache_inode);
+
+ if (cache_inode->i_fop->llseek) {
+ 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 int smfs_bmap(struct address_space *mapping, long block)
+static int smfs_mmap(struct file *file, struct vm_area_struct *vma)
{
- struct inode *inode = mapping->host;
- struct inode *cache_inode;
- int rc = 0;
-
- cache_inode = I2CI(inode);
-
+ struct inode *inode = file->f_dentry->d_inode;
+ struct smfs_file_info *sfi;
+ struct inode *cache_inode = NULL;
+ int rc = 0;
+ ENTRY;
+
+ cache_inode = I2CI(inode);
if (!cache_inode)
RETURN(-ENOENT);
- if (cache_inode->i_mapping->a_ops->bmap)
- rc = cache_inode->i_mapping->a_ops->bmap(mapping, block);
+ 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);
+ if (cache_inode->i_fop->mmap)
+ 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 int smfs_flushpage(struct page *page, unsigned long offset)
+static int smfs_init_cache_file(struct inode *inode, struct file *filp)
{
- struct inode *inode = page->mapping->host;
- struct inode *cache_inode;
- int rc = 0;
-
- cache_inode = I2CI(inode);
-
- if (!cache_inode)
- RETURN(-ENOENT);
+ 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)
+ GOTO(err_exit, rc = -ENOMEM);
+
+ sfi->magic = SMFS_FILE_MAGIC;
- if (cache_inode->i_mapping->a_ops->flushpage)
- rc = cache_inode->i_mapping->a_ops->flushpage(page, offset);
+ cache_dentry = pre_smfs_dentry(NULL, I2CI(inode), filp->f_dentry);
+ if (!cache_dentry)
+ GOTO(err_exit, rc = -ENOMEM);
+ 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(rc);
+err_exit:
+ if (sfi)
+ OBD_FREE(sfi, sizeof(struct smfs_file_info));
+ if (cache_filp)
+ put_filp(cache_filp);
RETURN(rc);
}
-static int smfs_releasepage(struct page *page, int wait)
+static int smfs_cleanup_cache_file(struct file *filp)
{
- struct inode *inode = page->mapping->host;
- struct inode *cache_inode;
- int rc = 0;
-
- cache_inode = I2CI(inode);
-
- if (!cache_inode)
- RETURN(-ENOENT);
+ struct smfs_file_info *sfi = NULL;
+ int rc = 0;
+ ENTRY;
+
+ if (!filp)
+ RETURN(rc);
+ sfi = F2SMFI(filp);
+
+ post_smfs_dentry(sfi->c_file->f_dentry);
+
+ put_filp(sfi->c_file);
- if (cache_inode->i_mapping->a_ops->releasepage)
- rc = cache_inode->i_mapping->a_ops->releasepage(page, wait);
+ OBD_FREE(sfi, sizeof(struct smfs_file_info));
+
+ filp->private_data = NULL;
RETURN(rc);
}
-static int smfs_direct_IO(int rw, struct inode *inode, struct kiobuf *iobuf,
- unsigned long blocknr, int blocksize)
+int smfs_open(struct inode *inode, struct file *filp)
{
- struct inode *cache_inode;
- int rc = 0;
-
- cache_inode = I2CI(inode);
-
+ struct inode *cache_inode = NULL;
+ int rc = 0;
+ ENTRY;
+
+ cache_inode = I2CI(inode);
if (!cache_inode)
RETURN(-ENOENT);
- if (cache_inode->i_mapping->a_ops->direct_IO)
- rc = cache_inode->i_mapping->a_ops->direct_IO(rw, cache_inode, iobuf,
- blocknr, blocksize);
+ if ((rc = smfs_init_cache_file(inode, filp)))
+ RETURN(rc);
+
+ pre_smfs_inode(inode, cache_inode);
+ if (cache_inode->i_fop->open)
+ rc = cache_inode->i_fop->open(cache_inode, F2CF(filp));
+
+ post_smfs_inode(inode, cache_inode);
+ duplicate_file(filp, F2CF(filp));
RETURN(rc);
}
-struct address_space_operations smfs_file_aops = {
- readpage: smfs_readpage,
- writepage: smfs_writepage,
- sync_page: smfs_sync_page,
- prepare_write: smfs_prepare_write,
- commit_write: smfs_commit_write,
- bmap: smfs_bmap,
- flushpage: smfs_flushpage,
- releasepage: smfs_releasepage,
- direct_IO: smfs_direct_IO,
-};
-
-/* 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)
+int smfs_release(struct inode *inode, struct file *filp)
{
- 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;
-}
-/* update file structs*/
-void smfs_update_file(struct file *file,
- struct file *cache_file)
-{
- 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 = NULL;
+ struct file *cache_file = NULL;
+ struct smfs_file_info *sfi = NULL;
+ int rc = 0;
+ ENTRY;
-static ssize_t smfs_write (struct file *filp, const 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);
-
+ 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;
- duplicate_inode(cache_inode, inode);
- smfs_update_file(filp, &open_file);
-
- RETURN(rc);
+ if (filp) {
+ sfi = F2SMFI(filp);
+ if (sfi->magic != SMFS_FILE_MAGIC)
+ LBUG();
+ cache_file = sfi->c_file;
+ }
+ pre_smfs_inode(inode, cache_inode);
+ if (cache_inode->i_fop->release)
+ rc = cache_inode->i_fop->release(cache_inode, cache_file);
+
+ post_smfs_inode(inode, cache_inode);
+ duplicate_file(filp, cache_file);
+
+ smfs_cleanup_cache_file(filp);
+ RETURN(rc);
}
-int smfs_ioctl(struct inode * inode, struct file * filp,
- unsigned int cmd, unsigned long arg)
+int smfs_fsync(struct file *file, struct dentry *dentry, int datasync)
{
- 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);
+ struct smfs_file_info *sfi = NULL;
+ struct dentry *cache_dentry = NULL;
+ struct file *cache_file = NULL;
+ struct inode *cache_inode;
+ int rc = 0;
+
+ cache_inode = I2CI(dentry->d_inode);
if (!cache_inode)
RETURN(-ENOENT);
+
+ 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);
+
+ if (cache_inode->i_fop->fsync) {
+ 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);
- 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);
-
- duplicate_inode(cache_inode, inode);
- smfs_update_file(filp, &open_file);
RETURN(rc);
}
-static ssize_t smfs_read (struct file *filp, char *buf,
- size_t count, loff_t *ppos)
+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,
+};
+
+static void smfs_truncate(struct inode *inode)
{
- 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);
+ struct inode *cache_inode;
- 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;
- duplicate_inode(cache_inode, inode);
- smfs_update_file(filp, &open_file);
- RETURN(rc);
-}
+ cache_inode = I2CI(inode);
-static loff_t smfs_llseek(struct file *file,
- loff_t offset,
- int origin)
-{
- 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);
+ return;
- 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);
+ if (!cache_inode)
+ return;
- duplicate_inode(cache_inode, dentry->d_inode);
- smfs_update_file(file, &open_file);
-
- RETURN(rc);
+ pre_smfs_inode(inode, cache_inode);
+ if (cache_inode->i_op->truncate)
+ cache_inode->i_op->truncate(cache_inode);
+
+ post_smfs_inode(inode, cache_inode);
+
+ return;
}
-static int smfs_mmap(struct file * file, struct vm_area_struct * vma)
+int smfs_setattr(struct dentry *dentry, struct iattr *attr)
{
- struct address_space *mapping = file->f_dentry->d_inode->i_mapping;
- struct inode *inode = mapping->host;
- struct inode *cache_inode = NULL;
- struct file open_file;
- struct dentry open_dentry;
- int rc = 0;
+ struct inode *cache_inode;
+ struct dentry *cache_dentry;
+ void *handle = NULL;
+ int rc = 0;
- cache_inode = I2CI(inode);
+ cache_inode = I2CI(dentry->d_inode);
if (!cache_inode)
RETURN(-ENOENT);
- smfs_prepare_cachefile(inode, file, cache_inode,
- &open_file, &open_dentry);
-
- if (cache_inode->i_fop->mmap)
- rc = cache_inode->i_fop->mmap(&open_file, vma);
-
- duplicate_inode(cache_inode, inode);
- smfs_update_file(file, &open_file);
-
- RETURN(rc);
-}
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
-static 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;
+ handle = smfs_trans_start(dentry->d_inode, FSFILT_OP_SETATTR, NULL);
+ if (IS_ERR(handle) ) {
+ CERROR("smfs_do_mkdir: no space for transaction\n");
+ RETURN(-ENOSPC);
+ }
- cache_inode = I2CI(inode);
- if (!cache_inode)
- RETURN(-ENOENT);
+ pre_smfs_inode(dentry->d_inode, cache_inode);
- 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);
-
- duplicate_inode(cache_inode, inode);
- smfs_update_file(filp, &open_file);
-
- RETURN(rc);
+ if (cache_inode->i_op->setattr)
+ rc = cache_inode->i_op->setattr(cache_dentry, attr);
+ SMFS_KML_POST(dentry->d_inode, dentry, attr, NULL,
+ REINT_SETATTR, "setattr", rc, exit);
+exit:
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
+ smfs_trans_commit(dentry->d_inode, handle, 0);
+ RETURN(rc);
}
-static int smfs_release(struct inode * inode, struct file * filp)
+
+int smfs_setxattr(struct dentry *dentry, const char *name, const void *value,
+ size_t size, int flags)
{
- struct inode *cache_inode = NULL;
- struct file open_file;
- struct dentry open_dentry;
- int rc = 0;
+ struct inode *cache_inode;
+ struct dentry *cache_dentry;
+ int rc = 0;
- cache_inode = I2CI(inode);
+ 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->release)
- rc = cache_inode->i_fop->release(cache_inode, &open_file);
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
- duplicate_inode(cache_inode, inode);
- smfs_update_file(filp, &open_file);
-
- RETURN(rc);
-}
-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;
+ pre_smfs_inode(dentry->d_inode, cache_inode);
- 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);
-
- duplicate_inode(cache_inode, inode);
- smfs_update_file(file, &open_file);
-
- RETURN(rc);
-}
+ if (cache_inode->i_op->setxattr)
+ rc = cache_inode->i_op->setxattr(cache_dentry, name, value,
+ size, flags);
-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,
-};
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
-static void smfs_prepare_cache_dentry(struct dentry *dentry, 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);
+ RETURN(rc);
}
-static void smfs_truncate(struct inode * inode)
+int smfs_getxattr(struct dentry *dentry, const char *name, void *buffer,
+ size_t size)
{
- struct inode *cache_inode;
-
- cache_inode = I2CI(inode);
+ struct inode *cache_inode;
+ struct dentry *cache_dentry;
+ int rc = 0;
- if (!cache_inode)
- return;
-
- if (cache_inode->i_op->truncate)
- cache_inode->i_op->truncate(cache_inode);
+ cache_inode = I2CI(dentry->d_inode);
+ if (!cache_inode)
+ RETURN(-ENOENT);
- duplicate_inode(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);
-
- if (cache_inode->i_op->setattr)
- rc = cache_inode->i_op->setattr(&open_dentry, attr);
-
- duplicate_inode(cache_inode, dentry->d_inode);
-
- RETURN(rc);
-}
-
-int smfs_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
-{
- 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);
-
- if (cache_inode->i_op->setattr)
- rc = cache_inode->i_op->setxattr(&open_dentry, name, value, size, flags);
-
- duplicate_inode(cache_inode, dentry->d_inode);
- RETURN(rc);
-}
-
-int smfs_getxattr(struct dentry *dentry, const char *name,
- void *buffer, size_t size)
-{
- struct inode *cache_inode;
- struct dentry open_dentry;
- int rc = 0;
+ 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);
- if (!cache_inode)
- RETURN(-ENOENT);
+ if (cache_inode->i_op->getattr)
+ rc = cache_inode->i_op->getxattr(cache_dentry, name, buffer,
+ size);
- smfs_prepare_cache_dentry(&open_dentry, cache_inode);
-
- if (cache_inode->i_op->setattr)
- rc = cache_inode->i_op->getxattr(&open_dentry, name, buffer, size);
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
- duplicate_inode(cache_inode, dentry->d_inode);
- RETURN(rc);
+ 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;
+ struct dentry *cache_dentry;
+ int rc = 0;
- cache_inode = I2CI(dentry->d_inode);
+ cache_inode = I2CI(dentry->d_inode);
+ if (!cache_inode)
+ RETURN(-ENOENT);
- if (!cache_inode)
- RETURN(-ENOENT);
+ cache_dentry = pre_smfs_dentry(NULL, cache_inode, dentry);
+ if (!cache_dentry)
+ RETURN(-ENOMEM);
- smfs_prepare_cache_dentry(&open_dentry, cache_inode);
-
- if (cache_inode->i_op->listxattr)
- rc = cache_inode->i_op->listxattr(&open_dentry, buffer, size);
+ pre_smfs_inode(dentry->d_inode, cache_inode);
- duplicate_inode(cache_inode, dentry->d_inode);
- RETURN(rc);
-}
+ if (cache_inode->i_op->listxattr)
+ rc = cache_inode->i_op->listxattr(cache_dentry, buffer, size);
+
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
+
+ RETURN(rc);
+}
int smfs_removexattr(struct dentry *dentry, const char *name)
{
- struct inode *cache_inode;
- struct dentry open_dentry;
- int rc = 0;
+ struct inode *cache_inode;
+ struct dentry *cache_dentry;
+ int rc = 0;
+
+ cache_inode = I2CI(dentry->d_inode);
+ if (!cache_inode)
+ RETURN(-ENOENT);
- 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_prepare_cache_dentry(&open_dentry, cache_inode);
-
- if (cache_inode->i_op->removexattr)
- rc = cache_inode->i_op->removexattr(&open_dentry, name);
+ if (cache_inode->i_op->removexattr)
+ rc = cache_inode->i_op->removexattr(cache_dentry, name);
- duplicate_inode(cache_inode, dentry->d_inode);
- RETURN(rc);
+ post_smfs_inode(dentry->d_inode, cache_inode);
+ post_smfs_dentry(cache_dentry);
+
+ RETURN(rc);
}
struct inode_operations smfs_file_iops = {
- truncate: smfs_truncate, /* BKL held */
+ 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 */
};
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff