#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/unistd.h>
+#include <linux/lustre_idl.h>
+#include <linux/smp_lock.h>
#include "smfs_internal.h"
+#include "kml_idl.h"
-static void d_unalloc(struct dentry *dentry)
-{
- if (dentry) {
- list_del(&dentry->d_hash);
- INIT_LIST_HEAD(&dentry->d_hash);
- dput(dentry);
- }
-}
-static struct inode *sm_create_inode(struct super_block *sb,
- struct inode *cache_inode)
-{
- struct inode *inode;
-
- inode = new_inode(sb);
- if (inode) {
- /*FIXME there are still some
- * other attributes need to
- * duplicated*/
- inode->i_ino = cache_inode->i_ino;
- inode->i_mode = cache_inode->i_mode;
- }
-
- return inode;
-}
-
-static void prepare_parent_dentry(struct dentry *dentry, struct inode *inode)
+#define NAME_ALLOC_LEN(len) ((len+16) & ~15)
+
+void prepare_parent_dentry(struct dentry *dentry, struct inode *inode)
{
atomic_set(&dentry->d_count, 1);
dentry->d_vfs_flags = 0;
INIT_LIST_HEAD(&dentry->d_alias);
}
+void d_unalloc(struct dentry *dentry)
+{
+
+ list_del(&dentry->d_hash);
+ INIT_LIST_HEAD(&dentry->d_hash);
+ dput(dentry); /* this will free the dentry memory */
+}
+
static int smfs_create(struct inode *dir,
struct dentry *dentry,
int mode)
{
struct inode *cache_dir;
- struct inode *cache_inode, *inode;
- struct dentry tmp;
- struct dentry *cache_dentry;
+ struct inode *cache_inode = NULL, *inode;
+ struct dentry parent;
+ struct dentry *cache_dentry = NULL;
int rc;
ENTRY;
if (!cache_dir)
RETURN(-ENOENT);
- prepare_parent_dentry(&tmp, cache_dir);
- cache_dentry = d_alloc(&tmp, &dentry->d_name);
-
- if (!cache_dentry)
- RETURN(-ENOENT);
+ prepare_parent_dentry(&parent, cache_dir);
+ cache_dentry = d_alloc(&parent, &dentry->d_name);
- if(cache_dir && cache_dir->i_op->create)
+ if (!cache_dentry) {
+ RETURN(-ENOMEM);
+ }
+
+ if (cache_dir && cache_dir->i_op->create)
rc = cache_dir->i_op->create(cache_dir, cache_dentry, mode);
+
if (rc)
GOTO(exit, rc);
-
- cache_inode = cache_dentry->d_inode;
- inode = sm_create_inode(dir->i_sb, cache_inode);
+
+ cache_inode = igrab(cache_dentry->d_inode);
+ inode = iget(dir->i_sb, cache_inode->i_ino);
+
if (!inode)
- GOTO(exit, rc);
+ GOTO(exit, rc = -ENOMEM);
+
+ d_instantiate(dentry, inode);
sm_set_inode_ops(cache_inode, inode);
exit:
- d_unalloc(cache_dentry);
+ d_unalloc(cache_dentry);
RETURN(rc);
}
+
static struct dentry *smfs_lookup(struct inode *dir,
struct dentry *dentry)
{
struct inode *cache_dir;
- struct inode *cache_inode, *inode;
- struct dentry tmp;
- struct dentry *cache_dentry;
+ struct inode *cache_inode = NULL, *inode;
+ struct dentry parent;
+ struct dentry *cache_dentry = NULL;
struct dentry *rc = NULL;
ENTRY;
cache_dir = I2CI(dir);
if (!cache_dir)
RETURN(ERR_PTR(-ENOENT));
- prepare_parent_dentry(&tmp, cache_dir);
- cache_dentry = d_alloc(&tmp, &dentry->d_name);
+ prepare_parent_dentry(&parent, cache_dir);
+ cache_dentry = d_alloc(&parent, &dentry->d_name);
- if (!cache_dentry)
- RETURN(ERR_PTR(-ENOENT));
-
if(cache_dir && cache_dir->i_op->lookup)
rc = cache_dir->i_op->lookup(cache_dir, cache_dentry);
GOTO(exit, rc);
}
- cache_inode = cache_dentry->d_inode;
+ cache_inode = igrab(cache_dentry->d_inode);
inode = iget(dir->i_sb, cache_inode->i_ino);
d_add(dentry, inode);
exit:
- d_unalloc(cache_dentry);
+ d_unalloc(cache_dentry);
RETURN(rc);
}
+
+static int smfs_lookup_raw(struct inode *dir, const char *name,
+ int len, ino_t *data)
+{
+ struct inode *cache_dir;
+ int rc = 0;
+
+ cache_dir = I2CI(dir);
+
+ if (!cache_dir)
+ RETURN(-ENOENT);
+
+ if (cache_dir->i_op->lookup_raw)
+ rc = cache_dir->i_op->lookup_raw(cache_dir, name, len, data);
+
+ RETURN(rc);
+}
+
+static int smfs_link(struct dentry * old_dentry,
+ struct inode * dir, struct dentry *dentry)
+{
+ struct inode *cache_old_inode = NULL;
+ struct inode *cache_dir = I2CI(dir);
+ struct inode *inode = NULL;
+ struct dentry *cache_dentry;
+ struct dentry *cache_old_dentry;
+ struct dentry parent;
+ struct dentry parent_old;
+ int rc = 0;
+
+ inode = old_dentry->d_inode;
+
+ cache_old_inode = I2CI(inode);
+
+ if (!cache_old_inode || !cache_dir)
+ RETURN(-ENOENT);
+
+ prepare_parent_dentry(&parent, cache_dir);
+ cache_dentry = d_alloc(&parent, &dentry->d_name);
+
+ prepare_parent_dentry(&parent_old, cache_dir);
+ cache_old_dentry = d_alloc(&parent_old, &dentry->d_name);
+ d_add(cache_old_dentry, cache_old_inode);
+
+ if (cache_dir->i_op->link)
+ rc = cache_dir->i_op->link(cache_old_dentry, cache_dir, cache_dentry);
+
+ if (rc)
+ GOTO(exit, rc);
+
+ atomic_inc(&inode->i_count);
+ post_smfs_inode(inode, cache_old_dentry->d_inode);
+ d_instantiate(dentry, inode);
+
+exit:
+ if (cache_dentry->d_inode)
+ igrab(cache_dentry->d_inode);
+ if (cache_old_dentry->d_inode)
+ igrab(cache_old_dentry->d_inode);
+
+ d_unalloc(cache_dentry);
+ d_unalloc(cache_old_dentry);
+
+ RETURN(rc);
+}
+
+static int smfs_unlink(struct inode * dir,
+ struct dentry *dentry)
+{
+ struct inode *cache_dir = I2CI(dir);
+ struct inode *cache_inode = I2CI(dentry->d_inode);
+ struct dentry *cache_dentry;
+ struct dentry parent;
+ int rc = 0;
+
+ if (!cache_dir || !cache_inode)
+ RETURN(-ENOENT);
+
+ prepare_parent_dentry(&parent, cache_dir);
+ cache_dentry = d_alloc(&parent, &dentry->d_name);
+ d_add(cache_dentry, cache_inode);
+
+ if (cache_dir->i_op->unlink)
+ rc = cache_dir->i_op->unlink(cache_dir, cache_dentry);
+
+
+ post_smfs_inode(dentry->d_inode, cache_dentry->d_inode);
+ post_smfs_inode(dir, cache_dir);
+
+ igrab(cache_dentry->d_inode);
+
+ d_unalloc(cache_dentry);
+ RETURN(rc);
+}
+
+static int smfs_symlink (struct inode * dir,
+ struct dentry *dentry,
+ const char * symname)
+{
+ struct inode *cache_dir = I2CI(dir);
+ struct inode *cache_inode = NULL;
+ struct inode *inode = NULL;
+ struct dentry *cache_dentry;
+ struct dentry parent;
+ int rc = 0;
+
+ if (!cache_dir)
+ RETURN(-ENOENT);
+
+ prepare_parent_dentry(&parent, cache_dir);
+ cache_dentry = d_alloc(&parent, &dentry->d_name);
+
+ if (cache_dir->i_op->symlink)
+ rc = cache_dir->i_op->symlink(cache_dir, cache_dentry, symname);
+
+ cache_inode = igrab(cache_dentry->d_inode);
+
+ inode = iget(dir->i_sb, cache_inode->i_ino);
+
+ if (inode)
+ d_instantiate(dentry, inode);
+ else
+ rc = -ENOENT;
+
+ d_unalloc(cache_dentry);
+
+ RETURN(rc);
+}
+
+static int smfs_mkdir(struct inode * dir,
+ struct dentry * dentry,
+ int mode)
+{
+ struct inode *cache_dir = I2CI(dir);
+ struct inode *cache_inode = NULL;
+ struct inode *inode = NULL;
+ struct dentry *cache_dentry;
+ struct dentry parent;
+ void *handle;
+ int rc = 0;
+
+ if (!cache_dir)
+ RETURN(-ENOENT);
+
+ handle = smfs_trans_start(cache_dir, KML_OPCODE_MKDIR);
+ if (IS_ERR(handle) ) {
+ CERROR("smfs_do_mkdir: no space for transaction\n");
+ RETURN(-ENOSPC);
+ }
+
+ prepare_parent_dentry(&parent, cache_dir);
+ cache_dentry = d_alloc(&parent, &dentry->d_name);
+
+ lock_kernel();
+ if (cache_dir->i_op->mkdir)
+ rc = cache_dir->i_op->mkdir(cache_dir, cache_dentry, mode);
+
+ cache_inode = igrab(cache_dentry->d_inode);
+
+ inode = iget(dir->i_sb, cache_inode->i_ino);
+
+ if (!inode)
+ GOTO(exit, rc = -ENOENT);
+
+ d_instantiate(dentry, inode);
+ /*Do KML post hook*/
+ if (smfs_do_kml(dir)) {
+ rc = post_kml_mkdir(dir, dentry);
+ GOTO(exit, rc);
+ }
+ post_smfs_inode(dir, cache_dir);
+exit:
+ unlock_kernel();
+ smfs_trans_commit(handle);
+ d_unalloc(cache_dentry);
+ RETURN(rc);
+}
+
+static int smfs_rmdir(struct inode * dir,
+ struct dentry *dentry)
+{
+ struct inode *cache_dir = I2CI(dir);
+ struct inode *cache_inode = I2CI(dentry->d_inode);
+ struct dentry *cache_dentry;
+ struct dentry parent;
+ int rc = 0;
+
+ if (!cache_dir)
+ RETURN(-ENOENT);
+
+ prepare_parent_dentry(&parent, cache_dir);
+ cache_dentry = d_alloc(&parent, &dentry->d_name);
+ d_add(cache_dentry, cache_inode);
+
+ igrab(cache_inode);
+
+ if (cache_dir->i_op->rmdir)
+ rc = cache_dir->i_op->rmdir(cache_dir, cache_dentry);
+
+ post_smfs_inode(dir, cache_dir);
+ post_smfs_inode(dentry->d_inode, cache_dentry->d_inode);
+ d_unalloc(cache_dentry);
+ RETURN(rc);
+}
+
+static int smfs_mknod(struct inode * dir, struct dentry *dentry,
+ int mode, int rdev)
+{
+ struct inode *cache_dir = I2CI(dir);
+ struct inode *inode = NULL;
+ struct inode *cache_inode = NULL;
+ struct dentry *cache_dentry;
+ struct dentry parent;
+ int rc = 0;
+
+ if (!cache_dir)
+ RETURN(-ENOENT);
+
+ prepare_parent_dentry(&parent, cache_dir);
+ cache_dentry = d_alloc(&parent, &dentry->d_name);
+
+ if (cache_dir->i_op->mknod)
+ rc = cache_dir->i_op->mknod(cache_dir, cache_dentry, mode, rdev);
+
+ if (cache_dentry->d_inode)
+ cache_inode = igrab(cache_dentry->d_inode);
+ if (rc)
+ GOTO(exit, rc);
+
+ inode = iget(dir->i_sb, cache_inode->i_ino);
+ d_instantiate(dentry, inode);
+ post_smfs_inode(dir, cache_dir);
+ post_smfs_inode(dentry->d_inode, cache_dentry->d_inode);
+exit:
+ d_unalloc(cache_dentry);
+ RETURN(rc);
+}
+static int smfs_rename(struct inode * old_dir, struct dentry *old_dentry,
+ struct inode * new_dir,struct dentry *new_dentry)
+{
+ struct inode *cache_old_dir = I2CI(old_dir);
+ struct inode *cache_new_dir = I2CI(new_dir);
+ struct inode *cache_old_inode = I2CI(old_dentry->d_inode);
+ struct dentry *cache_old_dentry;
+ struct dentry *cache_new_dentry;
+ struct dentry parent_new;
+ struct dentry parent_old;
+ int rc = 0;
+
+ if (!cache_old_dir || !cache_new_dir || !cache_old_inode)
+ RETURN(-ENOENT);
+
+ prepare_parent_dentry(&parent_old, cache_old_dir);
+ cache_old_dentry = d_alloc(&parent_old, &old_dentry->d_name);
+ d_add(cache_old_dentry, cache_old_inode);
+ igrab(cache_old_inode);
+
+ prepare_parent_dentry(&parent_new, cache_new_dir);
+ cache_new_dentry = d_alloc(&parent_new, &new_dentry->d_name);
+
+ if (cache_old_dir->i_op->rename)
+ rc = cache_old_dir->i_op->rename(cache_old_dir, cache_old_dentry,
+ cache_new_dir, cache_new_dentry);
+
+ post_smfs_inode(old_dir, cache_old_dir) ;
+ post_smfs_inode(new_dir, cache_new_dir);
+ if (cache_new_dentry->d_inode) {
+ igrab(cache_new_dentry->d_inode);
+ }
+ d_unalloc(cache_old_dentry);
+ d_unalloc(cache_new_dentry);
+ RETURN(rc);
+}
+
struct inode_operations smfs_dir_iops = {
- create: smfs_create,
- lookup: smfs_lookup,
+ create: smfs_create,
+ lookup: smfs_lookup,
+ lookup_raw: smfs_lookup_raw, /* BKL held */
+ link: smfs_link, /* BKL held */
+ unlink: smfs_unlink, /* BKL held */
+ symlink: smfs_symlink, /* BKL held */
+ mkdir: smfs_mkdir, /* BKL held */
+ rmdir: smfs_rmdir, /* BKL held */
+ mknod: smfs_mknod, /* BKL held */
+ rename: smfs_rename, /* BKL held */
+ setxattr: smfs_setxattr, /* BKL held */
+ getxattr: smfs_getxattr, /* BKL held */
+ listxattr: smfs_listxattr, /* BKL held */
+ removexattr: smfs_removexattr, /* BKL held */
};
-struct file_operations smfs_dir_fops = {
+
+static ssize_t smfs_read_dir(struct file *filp, char *buf,
+ size_t size, loff_t *ppos)
+{
+ struct dentry *dentry = filp->f_dentry;
+ struct inode *cache_inode = NULL;
+ struct file open_file;
+ struct dentry open_dentry;
+ int rc = 0;
+
+ cache_inode = I2CI(dentry->d_inode);
+
+ if (!cache_inode)
+ RETURN(-EINVAL);
+
+ smfs_prepare_cachefile(dentry->d_inode, filp, cache_inode,
+ &open_file, &open_dentry);
+ if (cache_inode->i_fop->read)
+ rc = cache_inode->i_fop->read(&open_file, buf, size, ppos);
+
+ smfs_update_file(filp, &open_file);
+ RETURN(rc);
+}
+
+static int smfs_readdir(struct file * filp,
+ void * dirent,
+ filldir_t filldir)
+{
+ struct dentry *dentry = filp->f_dentry;
+ struct inode *cache_inode = NULL;
+ struct file open_file;
+ struct dentry open_dentry;
+ int rc = 0;
+
+ cache_inode = I2CI(dentry->d_inode);
+
+ if (!cache_inode)
+ RETURN(-EINVAL);
+
+ smfs_prepare_cachefile(dentry->d_inode, filp, cache_inode,
+ &open_file, &open_dentry);
+
+ if (cache_inode->i_fop->readdir)
+ rc = cache_inode->i_fop->readdir(&open_file, dirent, filldir);
+
+ smfs_update_file(filp, &open_file);
+ RETURN(rc);
+}
+
+struct file_operations smfs_dir_fops = {
+ read: smfs_read_dir,
+ readdir: smfs_readdir, /* BKL held */
+ ioctl: smfs_ioctl, /* BKL held */
+ fsync: smfs_fsync, /* BKL held */
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff