mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-23 21:35:29 +03:00
Use dmfs_ function name prefix (in line with other file systems).
This commit is contained in:
Alasdair Kergon
parent
e69ea529cc
commit
8df5d06f9a
@ -29,7 +29,7 @@ static struct inode_operations dm_dir_inode_operations;
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struct vfsmount *_mnt;
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static int _unlink(struct inode *dir, struct dentry *dentry);
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static int dmfs_unlink(struct inode *dir, struct dentry *dentry);
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#define NOT_A_TABLE ((struct dm_table *) 1)
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@ -71,7 +71,7 @@ int extract_line(struct text_region *line, void *private)
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fs = get_fs();
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set_fs(get_ds());
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n = lc->in->f_op->read(lc->in, lc->data, sizeof(lc->data), &off);
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n = lc->in->f_op->read(lc->in, lc->data, sizeof (lc->data), &off);
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set_fs(fs);
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@ -105,7 +105,7 @@ static struct file *open_error_file(struct file *table)
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table->f_vfsmnt->mnt_mountpoint->d_name.name,
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table->f_dentry->d_parent->d_name.name,
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table->f_dentry->d_name.name);
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f = filp_open(name, O_WRONLY|O_TRUNC|O_CREAT, S_IRUGO);
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f = filp_open(name, O_WRONLY | O_TRUNC | O_CREAT, S_IRUGO);
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kfree(name);
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if (f)
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@ -135,11 +135,11 @@ static void parse_error(const char *message, void *private)
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#undef emit
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}
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static int _release_file(struct inode *inode, struct file *f)
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static int dmfs_release(struct inode *inode, struct file *f)
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{
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/* FIXME: we should lock the inode to
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prevent someone else opening it while
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we are parsing */
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prevent someone else opening it while
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we are parsing */
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struct line_c *lc;
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struct dm_table *table = (struct dm_table *) inode->u.generic_ip;
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@ -157,10 +157,10 @@ static int _release_file(struct inode *inode, struct file *f)
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inode->u.generic_ip = 0;
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}
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if (!(lc = kmalloc(sizeof(*lc), GFP_KERNEL)))
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if (!(lc = kmalloc(sizeof (*lc), GFP_KERNEL)))
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return -ENOMEM;
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memset(lc, 0, sizeof(*lc));
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memset(lc, 0, sizeof (*lc));
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lc->in = f;
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if (!(lc->out = open_error_file(lc->in)))
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@ -176,9 +176,9 @@ static int _release_file(struct inode *inode, struct file *f)
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return 0;
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}
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void _release_inode(struct inode *inode)
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void dmfs_put_inode(struct inode *inode)
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{
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struct mapped_device *md = (struct mapped_device *)inode->u.generic_ip;
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struct mapped_device *md = (struct mapped_device *) inode->u.generic_ip;
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struct dm_table *table = (struct dm_table *) inode->u.generic_ip;
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if (inode->i_mode & S_IFDIR) {
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@ -195,7 +195,7 @@ void _release_inode(struct inode *inode)
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force_delete(inode);
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}
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static int _statfs(struct super_block *sb, struct statfs *buf)
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static int dmfs_statfs(struct super_block *sb, struct statfs *buf)
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{
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buf->f_type = DM_MAGIC;
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buf->f_bsize = PAGE_CACHE_SIZE;
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@ -207,7 +207,7 @@ static int _statfs(struct super_block *sb, struct statfs *buf)
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* Lookup the data. This is trivial - if the dentry didn't already
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* exist, we know it is negative.
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*/
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static struct dentry * _lookup(struct inode *dir, struct dentry *dentry)
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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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@ -217,7 +217,7 @@ static struct dentry * _lookup(struct inode *dir, struct dentry *dentry)
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* Read a page. Again trivial. If it didn't already exist
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* in the page cache, it is zero-filled.
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*/
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static int _readpage(struct file *file, struct page * page)
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static int dmfs_readpage(struct file *file, struct page *page)
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{
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if (!Page_Uptodate(page)) {
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memset(kmap(page), 0, PAGE_CACHE_SIZE);
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@ -233,15 +233,15 @@ static int _readpage(struct file *file, struct page * page)
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* Writing: just make sure the page gets marked dirty, so that
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* the page stealer won't grab it.
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*/
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static int _writepage(struct page *page)
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static int dmfs_writepage(struct page *page)
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{
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SetPageDirty(page);
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UnlockPage(page);
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return 0;
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}
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static int _prepare_write(struct file *file, struct page *page,
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unsigned offset, unsigned to)
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static int dmfs_prepare_write(struct file *file, struct page *page,
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unsigned offset, unsigned to)
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{
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void *addr = kmap(page);
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if (!Page_Uptodate(page)) {
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@ -253,11 +253,11 @@ static int _prepare_write(struct file *file, struct page *page,
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return 0;
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}
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static int _commit_write(struct file *file, struct page *page,
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unsigned offset, unsigned to)
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static int dmfs_commit_write(struct file *file, struct page *page,
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unsigned offset, unsigned to)
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{
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struct inode *inode = page->mapping->host;
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loff_t pos = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
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loff_t pos = ((loff_t) page->index << PAGE_CACHE_SHIFT) + to;
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kunmap(page);
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if (pos > inode->i_size)
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@ -265,9 +265,9 @@ static int _commit_write(struct file *file, struct page *page,
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return 0;
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}
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struct inode *_get_inode(struct super_block *sb, int mode, int dev)
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struct inode *dmfs_get_inode(struct super_block *sb, int mode, int dev)
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{
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struct inode * inode = new_inode(sb);
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struct inode *inode = new_inode(sb);
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if (inode) {
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inode->i_mode = mode;
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@ -277,8 +277,7 @@ struct inode *_get_inode(struct super_block *sb, int mode, int dev)
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inode->i_blocks = 0;
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inode->i_rdev = NODEV;
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inode->i_mapping->a_ops = &dm_aops;
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inode->i_atime = inode->i_mtime =
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inode->i_ctime = CURRENT_TIME;
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inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
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switch (mode & S_IFMT) {
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case S_IFBLK:
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case S_IFCHR:
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@ -304,10 +303,10 @@ struct inode *_get_inode(struct super_block *sb, int mode, int dev)
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/*
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* File creation. Allocate an inode, and we're done..
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*/
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static int _mknod(struct inode *dir, struct dentry *dentry, int mode)
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static int dmfs_mknod(struct inode *dir, struct dentry *dentry, int mode)
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{
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int error = -ENOSPC;
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struct inode *inode = _get_inode(dir->i_sb, mode, 0);
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struct inode *inode = dmfs_get_inode(dir->i_sb, mode, 0);
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if (inode) {
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d_instantiate(dentry, inode);
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@ -318,19 +317,19 @@ static int _mknod(struct inode *dir, struct dentry *dentry, int mode)
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return error;
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}
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static int _mkdir(struct inode * dir, struct dentry * dentry, int mode)
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static int dmfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
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{
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int r;
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const char *name = (const char *) dentry->d_name.name;
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if (!is_identifier(name, dentry->d_name.len))
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return -EPERM; /* or EINVAL ? */
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return -EPERM; /* or EINVAL ? */
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r = dm_create(name, -1);
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if (r)
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return r;
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r = _mknod(dir, dentry, mode | S_IFDIR);
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r = dmfs_mknod(dir, dentry, mode | S_IFDIR);
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if (r) {
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dm_remove(name);
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return r;
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@ -341,9 +340,9 @@ static int _mkdir(struct inode * dir, struct dentry * dentry, int mode)
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return 0;
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}
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static int _rmdir(struct inode *dir, struct dentry *dentry)
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static int dmfs_rmdir(struct inode *dir, struct dentry *dentry)
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{
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int r = _unlink(dir, dentry);
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int r = dmfs_unlink(dir, dentry);
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if (r)
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return r;
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@ -352,11 +351,11 @@ static int _rmdir(struct inode *dir, struct dentry *dentry)
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return 0;
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}
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static int _create(struct inode *dir, struct dentry *dentry, int mode)
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static int dmfs_create(struct inode *dir, struct dentry *dentry, int mode)
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{
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int r;
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if ((r = _mknod(dir, dentry, mode | S_IFREG)))
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if ((r = dmfs_mknod(dir, dentry, mode | S_IFREG)))
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return r;
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dentry->d_inode->u.generic_ip = 0;
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@ -400,7 +399,7 @@ static int _empty(struct dentry *dentry)
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* This works for both directories and regular files.
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* (non-directories will always have empty subdirs)
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*/
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static int _unlink(struct inode *dir, struct dentry *dentry)
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static int dmfs_unlink(struct inode *dir, struct dentry *dentry)
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{
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int retval = -ENOTEMPTY;
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@ -420,8 +419,8 @@ static int _unlink(struct inode *dir, struct dentry *dentry)
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* it exists so that the VFS layer correctly free's it when it
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* gets overwritten.
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*/
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static int _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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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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struct inode *inode = new_dentry->d_inode;
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struct mapped_device *md = old_dir->u.generic_ip;
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@ -450,63 +449,63 @@ static int _rename(struct inode * old_dir, struct dentry *old_dentry,
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return 0;
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}
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static int _sync_file(struct file * file, struct dentry *dentry,
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int datasync)
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static int dmfs_sync_file(struct file *file, struct dentry *dentry,
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int datasync)
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{
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return 0;
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}
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static struct address_space_operations dm_aops = {
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readpage: _readpage,
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writepage: _writepage,
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prepare_write: _prepare_write,
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commit_write: _commit_write
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readpage: dmfs_readpage,
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writepage: dmfs_writepage,
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prepare_write: dmfs_prepare_write,
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commit_write: dmfs_commit_write
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};
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static struct file_operations dm_file_operations = {
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read: generic_file_read,
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write: generic_file_write,
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mmap: generic_file_mmap,
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fsync: _sync_file,
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release: _release_file,
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fsync: dmfs_sync_file,
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release: dmfs_release,
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};
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static struct file_operations dm_dir_operations = {
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read: generic_read_dir,
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readdir: dcache_readdir,
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fsync: _sync_file,
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fsync: dmfs_sync_file,
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};
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static struct inode_operations root_dir_inode_operations = {
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lookup: _lookup,
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mkdir: _mkdir,
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rmdir: _rmdir,
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rename: _rename,
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lookup: dmfs_lookup,
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mkdir: dmfs_mkdir,
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rmdir: dmfs_rmdir,
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rename: dmfs_rename,
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};
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static struct inode_operations dm_dir_inode_operations = {
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create: _create,
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lookup: _lookup,
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unlink: _unlink,
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rename: _rename,
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create: dmfs_create,
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lookup: dmfs_lookup,
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unlink: dmfs_unlink,
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rename: dmfs_rename,
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};
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static struct super_operations dm_ops = {
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statfs: _statfs,
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put_inode: _release_inode,
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statfs: dmfs_statfs,
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put_inode: dmfs_put_inode,
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};
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static struct super_block *_read_super(struct super_block * sb, void * data,
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int silent)
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static struct super_block *dmfs_read_super(struct super_block *sb, void *data,
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int silent)
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{
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struct inode * inode;
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struct dentry * root;
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struct inode *inode;
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struct dentry *root;
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sb->s_blocksize = PAGE_CACHE_SIZE;
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sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
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sb->s_magic = DM_MAGIC;
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sb->s_op = &dm_ops;
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inode = _get_inode(sb, S_IFDIR | 0755, 0);
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inode = dmfs_get_inode(sb, S_IFDIR | 0755, 0);
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inode->i_op = &root_dir_inode_operations;
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if (!inode)
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return NULL;
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@ -520,9 +519,9 @@ static struct super_block *_read_super(struct super_block * sb, void * data,
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return sb;
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}
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static DECLARE_FSTYPE(_fs_type, "dm-fs", _read_super, FS_SINGLE);
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static DECLARE_FSTYPE(_fs_type, "dmfs", dmfs_read_super, FS_SINGLE);
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int __init dm_fs_init(void)
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int __init dmfs_init(void)
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{
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int r;
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if ((r = register_filesystem(&_fs_type)))
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@ -531,14 +530,14 @@ int __init dm_fs_init(void)
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_mnt = kern_mount(&_fs_type);
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if (IS_ERR(_mnt)) {
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dm_fs_exit();
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dmfs_exit();
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return PTR_ERR(_mnt);
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}
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return 0;
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}
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void __exit dm_fs_exit(void)
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void __exit dmfs_exit(void)
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{
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unregister_filesystem(&_fs_type);
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}
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@ -148,5 +148,7 @@ module_exit(linear_exit);
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MODULE_AUTHOR("Joe Thornber <thornber@uk.sistina.com>");
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MODULE_DESCRIPTION("Device Mapper: Linear mapping");
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#ifdef MODULE_LICENSE
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MODULE_LICENSE("GPL");
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#endif
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@ -29,10 +29,10 @@
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/* defines for blk.h */
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#define MAJOR_NR DM_BLK_MAJOR
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#define DEVICE_NR(device) MINOR(device) /* has no partition bits */
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#define DEVICE_NAME "device-mapper" /* name for messaging */
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#define DEVICE_NO_RANDOM /* no entropy to contribute */
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#define DEVICE_OFF(d) /* do-nothing */
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#define DEVICE_NR(device) MINOR(device) /* has no partition bits */
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#define DEVICE_NAME "device-mapper" /* name for messaging */
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#define DEVICE_NO_RANDOM /* no entropy to contribute */
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#define DEVICE_OFF(d) /* do-nothing */
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#include <linux/blk.h>
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#include <linux/blkpg.h>
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@ -42,11 +42,11 @@
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#define DEFAULT_READ_AHEAD 64
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const char *_name = "device-mapper";
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int _version[3] = {0, 1, 0};
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int _version[3] = { 0, 1, 0 };
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struct io_hook {
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struct mapped_device *md;
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void (*end_io)(struct buffer_head *bh, int uptodate);
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void (*end_io) (struct buffer_head * bh, int uptodate);
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void *context;
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};
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@ -63,7 +63,7 @@ static int _hardsect_size[MAX_DEVICES];
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const char *_fs_dir = "device-mapper";
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static devfs_handle_t _dev_dir;
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static int request(request_queue_t *q, int rw, struct buffer_head *bh);
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static int request(request_queue_t * q, int rw, struct buffer_head *bh);
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/*
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* setup and teardown the driver
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@ -75,11 +75,12 @@ static int dm_init(void)
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init_rwsem(&_dev_lock);
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if (!(_io_hook_cache =
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kmem_cache_create("dm io hooks", sizeof(struct io_hook),
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kmem_cache_create("dm io hooks", sizeof (struct io_hook),
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0, 0, NULL, NULL)))
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return -ENOMEM;
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if ((ret = dm_fs_init()) || (ret = dm_target_init()) || (ret = dm_init_blkdev()))
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if ((ret = dmfs_init()) || (ret = dm_target_init())
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|| (ret = dm_init_blkdev()))
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return ret;
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/* set up the arrays */
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@ -97,7 +98,6 @@ static int dm_init(void)
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_dev_dir = devfs_mk_dir(0, _fs_dir, NULL);
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printk(KERN_INFO "%s %d.%d.%d initialised\n", _name,
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_version[0], _version[1], _version[2]);
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return 0;
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@ -105,10 +105,10 @@ static int dm_init(void)
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static void dm_exit(void)
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{
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if(kmem_cache_destroy(_io_hook_cache))
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if (kmem_cache_destroy(_io_hook_cache))
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WARN("it looks like there are still some io_hooks allocated");
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dm_fs_exit();
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dmfs_exit();
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dm_cleanup_blkdev();
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if (devfs_unregister_blkdev(MAJOR_NR, _name) < 0)
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@ -176,7 +176,7 @@ static int dm_blk_close(struct inode *inode, struct file *file)
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_hardsect_size[(minor)])
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static int dm_blk_ioctl(struct inode *inode, struct file *file,
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uint command, ulong a)
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uint command, ulong a)
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{
|
||||
int minor = MINOR(inode->i_rdev);
|
||||
long size;
|
||||
@ -197,31 +197,31 @@ static int dm_blk_ioctl(struct inode *inode, struct file *file,
|
||||
|
||||
case HDIO_GETGEO:
|
||||
{
|
||||
struct hd_geometry tmp = { heads: 64, sectors: 32 };
|
||||
struct hd_geometry tmp = { heads:64, sectors:32 };
|
||||
|
||||
tmp.cylinders = VOLUME_SIZE(minor) / tmp.heads /
|
||||
tmp.sectors;
|
||||
tmp.cylinders = VOLUME_SIZE(minor) / tmp.heads /
|
||||
tmp.sectors;
|
||||
|
||||
if (copy_to_user((char *)a, &tmp, sizeof(tmp)))
|
||||
if (copy_to_user((char *) a, &tmp, sizeof (tmp)))
|
||||
return -EFAULT;
|
||||
break;
|
||||
}
|
||||
|
||||
case HDIO_GETGEO_BIG:
|
||||
{
|
||||
struct hd_big_geometry tmp = { heads: 64, sectors: 32 };
|
||||
struct hd_big_geometry tmp = { heads:64, sectors:32 };
|
||||
|
||||
tmp.cylinders = VOLUME_SIZE(minor) / tmp.heads /
|
||||
tmp.sectors;
|
||||
tmp.sectors;
|
||||
|
||||
if (copy_to_user((char *)a, &tmp, sizeof(tmp)))
|
||||
if (copy_to_user((char *) a, &tmp, sizeof (tmp)))
|
||||
return -EFAULT;
|
||||
break;
|
||||
}
|
||||
|
||||
case BLKGETSIZE:
|
||||
size = VOLUME_SIZE(minor);
|
||||
if (copy_to_user((void *) a, &size, sizeof(long)))
|
||||
if (copy_to_user((void *) a, &size, sizeof (long)))
|
||||
return -EFAULT;
|
||||
break;
|
||||
|
||||
@ -233,8 +233,9 @@ static int dm_blk_ioctl(struct inode *inode, struct file *file,
|
||||
return 0;
|
||||
|
||||
case BLKRAGET:
|
||||
if (copy_to_user((void *) a, &read_ahead[MAJOR(inode->i_rdev)],
|
||||
sizeof(long)))
|
||||
if (copy_to_user
|
||||
((void *) a, &read_ahead[MAJOR(inode->i_rdev)],
|
||||
sizeof (long)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
|
||||
@ -247,7 +248,7 @@ static int dm_blk_ioctl(struct inode *inode, struct file *file,
|
||||
case BLKRRPART:
|
||||
return -EINVAL;
|
||||
#if 0
|
||||
case LVM_BMAP: /* we need some method for LILO to use */
|
||||
case LVM_BMAP: /* we need some method for LILO to use */
|
||||
#endif
|
||||
|
||||
default:
|
||||
@ -276,7 +277,7 @@ static inline void free_io_hook(struct io_hook *ih)
|
||||
*/
|
||||
static inline struct deferred_io *alloc_deferred(void)
|
||||
{
|
||||
return kmalloc(sizeof(struct deferred_io), GFP_NOIO);
|
||||
return kmalloc(sizeof (struct deferred_io), GFP_NOIO);
|
||||
}
|
||||
|
||||
static inline void free_deferred(struct deferred_io *di)
|
||||
@ -396,7 +397,7 @@ static inline int __find_node(struct dm_table *t, struct buffer_head *bh)
|
||||
return (KEYS_PER_NODE * n) + k;
|
||||
}
|
||||
|
||||
static int request(request_queue_t *q, int rw, struct buffer_head *bh)
|
||||
static int request(request_queue_t * q, int rw, struct buffer_head *bh)
|
||||
{
|
||||
struct mapped_device *md;
|
||||
int r, minor = MINOR(bh->b_rdev);
|
||||
@ -419,7 +420,7 @@ static int request(request_queue_t *q, int rw, struct buffer_head *bh)
|
||||
goto bad_no_lock;
|
||||
|
||||
else if (r > 0)
|
||||
return 0; /* deferred successfully */
|
||||
return 0; /* deferred successfully */
|
||||
|
||||
down_read(&_dev_lock); /* FIXME: there's still a race here */
|
||||
}
|
||||
@ -430,10 +431,10 @@ static int request(request_queue_t *q, int rw, struct buffer_head *bh)
|
||||
up_read(&_dev_lock);
|
||||
return 1;
|
||||
|
||||
bad:
|
||||
bad:
|
||||
up_read(&_dev_lock);
|
||||
|
||||
bad_no_lock:
|
||||
bad_no_lock:
|
||||
buffer_IO_error(bh);
|
||||
return 0;
|
||||
}
|
||||
@ -474,12 +475,12 @@ static inline int __any_old_dev(void)
|
||||
*/
|
||||
static struct mapped_device *alloc_dev(int minor)
|
||||
{
|
||||
struct mapped_device *md = kmalloc(sizeof(*md), GFP_KERNEL);
|
||||
struct mapped_device *md = kmalloc(sizeof (*md), GFP_KERNEL);
|
||||
|
||||
if (!md)
|
||||
return 0;
|
||||
|
||||
memset(md, 0, sizeof(*md));
|
||||
memset(md, 0, sizeof (*md));
|
||||
|
||||
down_write(&_dev_lock);
|
||||
minor = (minor < 0) ? __any_old_dev() : __specific_dev(minor);
|
||||
@ -538,10 +539,10 @@ struct mapped_device *dm_find_by_minor(int minor)
|
||||
static int register_device(struct mapped_device *md)
|
||||
{
|
||||
md->devfs_entry =
|
||||
devfs_register(_dev_dir, md->name, DEVFS_FL_CURRENT_OWNER,
|
||||
MAJOR(md->dev), MINOR(md->dev),
|
||||
S_IFBLK | S_IRUSR | S_IWUSR | S_IRGRP,
|
||||
&dm_blk_dops, NULL);
|
||||
devfs_register(_dev_dir, md->name, DEVFS_FL_CURRENT_OWNER,
|
||||
MAJOR(md->dev), MINOR(md->dev),
|
||||
S_IFBLK | S_IRUSR | S_IWUSR | S_IRGRP,
|
||||
&dm_blk_dops, NULL);
|
||||
|
||||
if (!md->devfs_entry)
|
||||
return -ENOMEM;
|
||||
@ -754,11 +755,10 @@ void dm_suspend(struct mapped_device *md)
|
||||
up_write(&_dev_lock);
|
||||
}
|
||||
|
||||
|
||||
struct block_device_operations dm_blk_dops = {
|
||||
open: dm_blk_open,
|
||||
open: dm_blk_open,
|
||||
release: dm_blk_close,
|
||||
ioctl: dm_blk_ioctl
|
||||
ioctl: dm_blk_ioctl
|
||||
};
|
||||
|
||||
/*
|
||||
|
||||
@ -249,8 +249,8 @@ int dm_init_blkdev(void);
|
||||
void dm_cleanup_blkdev(void);
|
||||
|
||||
/* dm-fs.c */
|
||||
int dm_fs_init(void);
|
||||
void dm_fs_exit(void);
|
||||
int dmfs_init(void);
|
||||
void dmfs_exit(void);
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user