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o Again, please ignore this for the time being.

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This commit is contained in:
Steven Whitehouse 2001-09-17 19:05:49 +00:00
parent 749e7c1bb4
commit 8424428faf
3 changed files with 95 additions and 9 deletions
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28
driver/device-mapper/dmfs-dir.c
View File

@ -21,16 +21,26 @@
/* Heavily based upon ramfs */
static int dmfs_create(struct inode *dir, struct dentry *dentry, int mode)
{
return dmfs_create_file(dir, dentry, mode);
}
static int dmfs_unlink(struct inode *dir, struct dentry *dentry)
{
}
static int dmfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
{
struct inode *inode = old_dentry->d_inode;
if (!S_ISREG(inode->i_mode))
return -EPERM;
if (dentry->d_parent != old_dentry->d_parent)
return -EPERM;
inode->i_ctime = CURRENT_TIME;
return 0;
}
static struct dentry *dmfs_lookup(struct inode *dir, struct dentry *dentry)
{
d_add(dentry, NULL);
@ -46,6 +56,7 @@ static int dmfs_rename(struct inode *old_dir, struct dentry *old_dentry,
return 0;
}
static int dmfs_dir_sync(struct file *file, struct dentry *dentry, int datasync)
{
return 0;
@ -57,9 +68,10 @@ static struct dm_dir_file_operations = {
fsync: dmfs_dir_sync,
};
static struct dm_root_inode_operations = {
create: dmfs_dir_create,
static struct dm_dir_inode_operations = {
create: dmfs_create_file,
lookup: dmfs_dir_lookup,
link: dmfs_dir_link,
unlink: dmfs_dir_unlink,
rename: dmfs_dir_rename,
};
@ -75,7 +87,7 @@ struct inode *dmfs_create_dir(struct inode *dir, struct dentry *dentry, int mode
inode->i_blksize = PAGE_CACHE_SIZE;
inode->i_blocks = 0;
inode->i_rdev = NODEV;
inode->i_atime = inode->i_ctime = inode->i_ctime = CURRENT_TIME;
inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
inode->i_fop = &dmfs_dir_file_operations;
inode->i_op = &dmfs_dir_dir_operations;
}

74
driver/device-mapper/dmfs-file.c Normal file
View File

@ -0,0 +1,74 @@
/*
* dmfs-file.c
*
* Copyright (C) 2001 Sistina Software
*
* This software is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*
* This software 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 GNU CC; see the file COPYING. If not, write to
* the Free Software Foundation, 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
static ssize_t dmfs_read(struct file *file, char *buf, size_t size, loff_t *pos)
{
}
static ssize_t dmfs_write(struct file *file, const char *buf, size_t size, loff_t *pos)
{
}
static int dmfs_open(struct inode *inode, struct file *file)
{
struct dentry *dentry = file->f_dentry;
if (dentry->name.len == 6 && memcmp("ACTIVE", dentry->name.name, 6) == 0)
return -EPERM;
return 0;
}
static int dmfs_file_sync(struct file *file, struct dentry *dentry, int datasync)
{
return 0;
}
static struct dm_file_file_operations = {
/* llseek: generic_file_llseek, */
read: dmfs_read,
write: dmfs_write,
open: dmfs_open,
fsync: dmfs_file_sync,
};
static struct dm_file_inode_operations = {
};
int dmfs_create_file(struct inode *dir, struct dentry *dentry, int mode)
{
struct inode *inode = new_inode(dir->i_sb);
if (inode) {
inode->i_mode = mode | S_IFREG;
inode->i_uid = current->fsuid;
inode->i_gid = current->fsgid;
inode->i_blksize = PAGE_CACHE_SIZE;
inode->i_blocks = 0;
inode->i_rdev = NODEV;
inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
inode->i_fop = &dmfs_file_file_operations;
inode->i_op = &dmfs_file_inode_operations;
}
return inode;
}

2
driver/device-mapper/dmfs-root.c
View File

@ -132,7 +132,7 @@ struct inode *dmfs_create_root(struct super_block *sb, int mode)
inode->i_blksize = PAGE_CACHE_SIZE;
inode->i_blocks = 0;
inode->i_rdev = NODEV;
inode->i_atime = inode->i_ctime = inode->i_ctime = CURRENT_TIME;
inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME;
inode->i_fop = &dmfs_root_file_operations;
inode->i_op = &dmfs_root_dir_operations;
}