mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-23 21:35:29 +03:00
These files are now a bit closer towards what I'm aiming at. Still a lot
more to do though.
This commit is contained in:
steve
parent
30abca7be2
commit
d8cffcaae7
@ -1,98 +0,0 @@
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/*
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* dmfs-dir.c
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*
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* Copyright (C) 2001 Sistina Software
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*
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* This software is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2, or (at
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* your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU CC; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* Heavily based upon ramfs */
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static int dmfs_unlink(struct inode *dir, struct dentry *dentry)
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{
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}
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static int dmfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
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{
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struct inode *inode = old_dentry->d_inode;
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if (!S_ISREG(inode->i_mode))
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return -EPERM;
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if (dentry->d_parent != old_dentry->d_parent)
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return -EPERM;
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inode->i_ctime = CURRENT_TIME;
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return 0;
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}
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static struct dentry *dmfs_lookup(struct inode *dir, struct dentry *dentry)
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{
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d_add(dentry, NULL);
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return NULL;
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}
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static int dmfs_rename(struct inode *old_dir, struct dentry *old_dentry,
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struct inode *new_dir, struct dentry *new_dentry)
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{
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if (old_dir != new_dir)
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return -EPERM;
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return 0;
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}
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static int dmfs_dir_sync(struct file *file, struct dentry *dentry, int datasync)
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{
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return 0;
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}
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static struct dm_dir_file_operations = {
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read: generic_read_dir,
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readdir: dcache_readdir,
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fsync: dmfs_dir_sync,
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};
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static struct dm_dir_inode_operations = {
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create: dmfs_create_file,
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lookup: dmfs_dir_lookup,
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link: dmfs_dir_link,
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unlink: dmfs_dir_unlink,
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rename: dmfs_dir_rename,
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};
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struct inode *dmfs_create_dir(struct inode *dir, struct dentry *dentry, int mode)
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{
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struct inode *inode = new_inode(sb);
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if (inode) {
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inode->i_mode = mode | S_IFDIR;
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inode->i_uid = current->fsuid;
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inode->i_gid = current->fsgid;
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inode->i_blksize = PAGE_CACHE_SIZE;
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inode->i_blocks = 0;
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inode->i_rdev = NODEV;
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inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
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inode->i_fop = &dmfs_dir_file_operations;
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inode->i_op = &dmfs_dir_dir_operations;
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}
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return inode;
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}
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@ -1,74 +0,0 @@
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/*
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* dmfs-file.c
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*
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* Copyright (C) 2001 Sistina Software
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*
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* This software is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2, or (at
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* your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU CC; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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static ssize_t dmfs_read(struct file *file, char *buf, size_t size, loff_t *pos)
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{
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}
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static ssize_t dmfs_write(struct file *file, const char *buf, size_t size, loff_t *pos)
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{
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}
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static int dmfs_open(struct inode *inode, struct file *file)
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{
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struct dentry *dentry = file->f_dentry;
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if (dentry->name.len == 6 && memcmp("ACTIVE", dentry->name.name, 6) == 0)
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return -EPERM;
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return 0;
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}
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static int dmfs_file_sync(struct file *file, struct dentry *dentry, int datasync)
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{
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return 0;
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}
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static struct dm_file_file_operations = {
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/* llseek: generic_file_llseek, */
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read: dmfs_read,
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write: dmfs_write,
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open: dmfs_open,
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fsync: dmfs_file_sync,
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};
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static struct dm_file_inode_operations = {
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};
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int dmfs_create_file(struct inode *dir, struct dentry *dentry, int mode)
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{
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struct inode *inode = new_inode(dir->i_sb);
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if (inode) {
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inode->i_mode = mode | S_IFREG;
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inode->i_uid = current->fsuid;
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inode->i_gid = current->fsgid;
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inode->i_blksize = PAGE_CACHE_SIZE;
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inode->i_blocks = 0;
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inode->i_rdev = NODEV;
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inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
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inode->i_fop = &dmfs_file_file_operations;
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inode->i_op = &dmfs_file_inode_operations;
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}
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return inode;
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}
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@ -38,22 +38,31 @@ static int is_identifier(const char *str, int len)
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static int dmfs_root_mkdir(struct inode *dir, struct dentry *dentry, int mode)
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{
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struct super_block *sb = dir->i_sb;
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int rv;
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struct inode *inode;
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struct mapped_device *md;
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if (!is_identifier(name, dentry->d_name.len))
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return -EPERM;
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rv = dmfs_create_lv(dir, dentry, mode);
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if (rv == 0) {
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rv = dm_create(name, -1);
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inode = dmfs_create_lv(dir, dentry, mode);
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if (!IS_ERR(inode)) {
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md = dm_create(name, -1);
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if (!IS_ERR(md)) {
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inode->u.generic_ip = md;
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md->inode = inode;
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d_instantiate(dentry, inode);
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dget(dentry);
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return 0;
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}
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return rv;
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iput(inode);
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return PTR_ERR(md);
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}
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return PTR_ERR(inode);
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}
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static inline positive(struct dentry *dentry)
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{
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return dentry->d_inode && ! d_unhashed(dentry);
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return dentry->d_inode && !d_unhashed(dentry);
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}
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static int empty(struct dentry *dentry)
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@ -33,18 +33,18 @@ static int dmfs_statfs(struct super_block *sb, struct statfs *buf)
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return 0;
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}
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static int dmfs_delete_inode(struct inode *inode)
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static void dmfs_delete_inode(struct inode *inode)
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{
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struct super_block *sb = inode->i_sb;
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switch(inode->i_mode & S_IFMT) {
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case S_IFDIR:
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if (DMFS_LVI(inode))
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dmfs_lv_put_inode(inode);
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if (inode->u.generic_ip) {
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dm_remove((struct mapped_device *)inode->u.generic_ip);
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inode->u.generic_ip = NULL;
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}
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break;
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case S_IFREG:
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if (DMFS_TI(inode))
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dmfs_table_put_inode(inode);
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break;
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}
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