From d669177c43982f0ca08c8930b96dc676542590f6 Mon Sep 17 00:00:00 2001
From: wangdi <wangdi>
Date: Thu, 5 Feb 2004 18:25:41 +0000
Subject: [PATCH] add some methods in file.c
---
lustre/smfs/file.c | 123 +++++++++++++++++++++++++++++++++++-
lustre/smfs/inode.c | 2 +-
lustre/smfs/smfs_internal.h | 7 +-
3 files changed, 129 insertions(+), 3 deletions(-)
diff --git a/lustre/smfs/file.c b/lustre/smfs/file.c
index 751f13aeb4..fec85afb47 100644
--- a/lustre/smfs/file.c
+++ b/lustre/smfs/file.c
@@ -13,12 +13,133 @@
#include <linux/pagemap.h>
#include "smfs_internal.h"
+
+static int smfs_readpage(struct file *file,
+ struct page *page)
+{
+ struct inode *inode = page->mapping->host;
+ struct inode *cache_inode;
+ int rc;
+
+ ENTRY;
+
+ cache_inode = I2CI(inode);
+
+ if (!cache_inode)
+ RETURN(-ENOENT);
+
+ if (cache_inode->i_mapping->a_ops->readpage)
+ rc = cache_inode->i_mapping->a_ops->readpage(file, page);
+
+ RETURN(rc);
+
+}
+static int smfs_writepage(struct page *page)
+{
+
+ struct inode *inode = page->mapping->host;
+ struct inode *cache_inode;
+ int rc;
+
+ ENTRY;
+
+ cache_inode = I2CI(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);
+
+}
struct address_space_operations smfs_file_aops = {
+ readpage: smfs_readpage,
+ writepage: smfs_writepage,
};
+
+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;
+ int rc;
+
+ ENTRY;
+
+ cache_inode = I2CI(dentry->d_inode);
+
+ if (!cache_inode)
+ RETURN(-ENOENT);
+
+ if (cache_inode->i_fop->write)
+ cache_inode->i_fop->write(filp, buf, count, ppos);
+
+ RETURN(rc);
+}
+
+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;
+ ssize_t rc;
+
+ ENTRY;
+
+ cache_inode = I2CI(dentry->d_inode);
+
+ if (!cache_inode)
+ RETURN(-ENOENT);
+
+ if (cache_inode->i_fop->read)
+ rc = cache_inode->i_fop->read(filp, buf, count, ppos);
+
+ RETURN(rc);
+}
+
struct file_operations smfs_file_fops = {
+ read: smfs_read,
+ write: smfs_write,
};
-
+
+static void smfs_truncate(struct inode * inode)
+{
+ struct inode *cache_inode;
+
+ cache_inode = I2CI(inode);
+
+ if (!cache_inode)
+ return;
+
+ if (cache_inode->i_op->truncate)
+ cache_inode->i_op->truncate(cache_inode);
+
+ duplicate(inode, cache_inode);
+
+ return;
+}
+
+static int smfs_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ struct inode *cache_inode;
+ int rc = 0;
+
+ cache_inode = I2CI(dentry->d_inode);
+
+ if (!cache_inode)
+ RETURN(-ENOENT);
+
+ if (cache_inode->i_op->setattr)
+ rc = cache_inode->i_op->setattr(dentry, attr);
+
+ RETURN(rc);
+}
+
struct inode_operations smfs_file_iops = {
+ truncate: smfs_truncate, /* BKL held */
+ setattr: smfs_setattr, /* BKL held */
};
diff --git a/lustre/smfs/inode.c b/lustre/smfs/inode.c
index 4057f94189..f9f3b738ec 100644
--- a/lustre/smfs/inode.c
+++ b/lustre/smfs/inode.c
@@ -14,7 +14,7 @@
#include <linux/string.h>
#include "smfs_internal.h"
-static void duplicate_inode(struct inode *cache_inode, struct inode *inode)
+void duplicate_inode(struct inode *cache_inode, struct inode *inode)
{
inode->i_mode = cache_inode->i_mode;
diff --git a/lustre/smfs/smfs_internal.h b/lustre/smfs/smfs_internal.h
index ad58e8eeec..1e09a61446 100644
--- a/lustre/smfs/smfs_internal.h
+++ b/lustre/smfs/smfs_internal.h
@@ -66,4 +66,9 @@ extern int sm_debug_level;
extern int sm_inodes;
extern long sm_kmemory;
extern int sm_stack;
-#endif /* __LINUX_SNAPFS_H */
+/*dir.c*/
+extern struct inode_operations smfs_dir_iops;
+extern struct file_operations smfs_dir_fops;
+/*inode.c*/
+extern void duplicate_inode(struct inode *cache_inode, struct inode *inode);
+#endif /* __LINUX_SMFS_H */
--
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