#define dprintf(x...)
#endif
-static int bfs_add_entry(struct inode * dir, const unsigned char * name, int namelen, int ino);
-static struct buffer_head * bfs_find_entry(struct inode * dir,
- const unsigned char * name, int namelen, struct bfs_dirent ** res_dir);
+static int bfs_add_entry(struct inode *dir, const unsigned char *name,
+ int namelen, int ino);
+static struct buffer_head *bfs_find_entry(struct inode *dir,
+ const unsigned char *name, int namelen,
+ struct bfs_dirent **res_dir);
-static int bfs_readdir(struct file * f, void * dirent, filldir_t filldir)
+static int bfs_readdir(struct file *f, void *dirent, filldir_t filldir)
{
- struct inode * dir = f->f_path.dentry->d_inode;
- struct buffer_head * bh;
- struct bfs_dirent * de;
+ struct inode *dir = f->f_path.dentry->d_inode;
+ struct buffer_head *bh;
+ struct bfs_dirent *de;
+ struct bfs_sb_info *info = BFS_SB(dir->i_sb);
unsigned int offset;
int block;
- lock_kernel();
+ mutex_lock(&info->bfs_lock);
- if (f->f_pos & (BFS_DIRENT_SIZE-1)) {
- printf("Bad f_pos=%08lx for %s:%08lx\n", (unsigned long)f->f_pos,
- dir->i_sb->s_id, dir->i_ino);
- unlock_kernel();
+ if (f->f_pos & (BFS_DIRENT_SIZE - 1)) {
+ printf("Bad f_pos=%08lx for %s:%08lx\n",
+ (unsigned long)f->f_pos,
+ dir->i_sb->s_id, dir->i_ino);
+ mutex_unlock(&info->bfs_lock);
return -EBADF;
}
while (f->f_pos < dir->i_size) {
- offset = f->f_pos & (BFS_BSIZE-1);
+ offset = f->f_pos & (BFS_BSIZE - 1);
block = BFS_I(dir)->i_sblock + (f->f_pos >> BFS_BSIZE_BITS);
bh = sb_bread(dir->i_sb, block);
if (!bh) {
de = (struct bfs_dirent *)(bh->b_data + offset);
if (de->ino) {
int size = strnlen(de->name, BFS_NAMELEN);
- if (filldir(dirent, de->name, size, f->f_pos, le16_to_cpu(de->ino), DT_UNKNOWN) < 0) {
+ if (filldir(dirent, de->name, size, f->f_pos,
+ le16_to_cpu(de->ino),
+ DT_UNKNOWN) < 0) {
brelse(bh);
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
return 0;
}
}
offset += BFS_DIRENT_SIZE;
f->f_pos += BFS_DIRENT_SIZE;
- } while (offset < BFS_BSIZE && f->f_pos < dir->i_size);
+ } while ((offset < BFS_BSIZE) && (f->f_pos < dir->i_size));
brelse(bh);
}
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
return 0;
}
extern void dump_imap(const char *, struct super_block *);
-static int bfs_create(struct inode * dir, struct dentry * dentry, int mode,
- struct nameidata *nd)
+static int bfs_create(struct inode *dir, struct dentry *dentry, int mode,
+ struct nameidata *nd)
{
int err;
- struct inode * inode;
- struct super_block * s = dir->i_sb;
- struct bfs_sb_info * info = BFS_SB(s);
+ struct inode *inode;
+ struct super_block *s = dir->i_sb;
+ struct bfs_sb_info *info = BFS_SB(s);
unsigned long ino;
inode = new_inode(s);
if (!inode)
return -ENOSPC;
- lock_kernel();
+ mutex_lock(&info->bfs_lock);
ino = find_first_zero_bit(info->si_imap, info->si_lasti);
if (ino > info->si_lasti) {
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
iput(inode);
return -ENOSPC;
}
- set_bit(ino, info->si_imap);
+ set_bit(ino, info->si_imap);
info->si_freei--;
inode->i_uid = current->fsuid;
inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
BFS_I(inode)->i_eblock = 0;
insert_inode_hash(inode);
mark_inode_dirty(inode);
- dump_imap("create",s);
+ dump_imap("create", s);
- err = bfs_add_entry(dir, dentry->d_name.name, dentry->d_name.len, inode->i_ino);
+ err = bfs_add_entry(dir, dentry->d_name.name, dentry->d_name.len,
+ inode->i_ino);
if (err) {
inode_dec_link_count(inode);
+ mutex_unlock(&info->bfs_lock);
iput(inode);
- unlock_kernel();
return err;
}
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
d_instantiate(dentry, inode);
return 0;
}
-static struct dentry * bfs_lookup(struct inode * dir, struct dentry * dentry, struct nameidata *nd)
+static struct dentry *bfs_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *nd)
{
- struct inode * inode = NULL;
- struct buffer_head * bh;
- struct bfs_dirent * de;
+ struct inode *inode = NULL;
+ struct buffer_head *bh;
+ struct bfs_dirent *de;
+ struct bfs_sb_info *info = BFS_SB(dir->i_sb);
if (dentry->d_name.len > BFS_NAMELEN)
return ERR_PTR(-ENAMETOOLONG);
- lock_kernel();
+ mutex_lock(&info->bfs_lock);
bh = bfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len, &de);
if (bh) {
unsigned long ino = (unsigned long)le16_to_cpu(de->ino);
brelse(bh);
- inode = iget(dir->i_sb, ino);
- if (!inode) {
- unlock_kernel();
- return ERR_PTR(-EACCES);
+ inode = bfs_iget(dir->i_sb, ino);
+ if (IS_ERR(inode)) {
+ mutex_unlock(&info->bfs_lock);
+ return ERR_CAST(inode);
}
}
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
d_add(dentry, inode);
return NULL;
}
-static int bfs_link(struct dentry * old, struct inode * dir, struct dentry * new)
+static int bfs_link(struct dentry *old, struct inode *dir,
+ struct dentry *new)
{
- struct inode * inode = old->d_inode;
+ struct inode *inode = old->d_inode;
+ struct bfs_sb_info *info = BFS_SB(inode->i_sb);
int err;
- lock_kernel();
- err = bfs_add_entry(dir, new->d_name.name, new->d_name.len, inode->i_ino);
+ mutex_lock(&info->bfs_lock);
+ err = bfs_add_entry(dir, new->d_name.name, new->d_name.len,
+ inode->i_ino);
if (err) {
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
return err;
}
inc_nlink(inode);
mark_inode_dirty(inode);
atomic_inc(&inode->i_count);
d_instantiate(new, inode);
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
return 0;
}
-
-static int bfs_unlink(struct inode * dir, struct dentry * dentry)
+static int bfs_unlink(struct inode *dir, struct dentry *dentry)
{
int error = -ENOENT;
- struct inode * inode;
- struct buffer_head * bh;
- struct bfs_dirent * de;
+ struct inode *inode = dentry->d_inode;
+ struct buffer_head *bh;
+ struct bfs_dirent *de;
+ struct bfs_sb_info *info = BFS_SB(inode->i_sb);
- inode = dentry->d_inode;
- lock_kernel();
+ mutex_lock(&info->bfs_lock);
bh = bfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len, &de);
- if (!bh || le16_to_cpu(de->ino) != inode->i_ino)
+ if (!bh || (le16_to_cpu(de->ino) != inode->i_ino))
goto out_brelse;
if (!inode->i_nlink) {
- printf("unlinking non-existent file %s:%lu (nlink=%d)\n", inode->i_sb->s_id,
- inode->i_ino, inode->i_nlink);
+ printf("unlinking non-existent file %s:%lu (nlink=%d)\n",
+ inode->i_sb->s_id, inode->i_ino,
+ inode->i_nlink);
inode->i_nlink = 1;
}
de->ino = 0;
out_brelse:
brelse(bh);
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
return error;
}
-static int bfs_rename(struct inode * old_dir, struct dentry * old_dentry,
- struct inode * new_dir, struct dentry * new_dentry)
+static int bfs_rename(struct inode *old_dir, struct dentry *old_dentry,
+ struct inode *new_dir, struct dentry *new_dentry)
{
- struct inode * old_inode, * new_inode;
- struct buffer_head * old_bh, * new_bh;
- struct bfs_dirent * old_de, * new_de;
+ struct inode *old_inode, *new_inode;
+ struct buffer_head *old_bh, *new_bh;
+ struct bfs_dirent *old_de, *new_de;
+ struct bfs_sb_info *info;
int error = -ENOENT;
old_bh = new_bh = NULL;
if (S_ISDIR(old_inode->i_mode))
return -EINVAL;
- lock_kernel();
+ info = BFS_SB(old_inode->i_sb);
+
+ mutex_lock(&info->bfs_lock);
old_bh = bfs_find_entry(old_dir,
old_dentry->d_name.name,
old_dentry->d_name.len, &old_de);
- if (!old_bh || le16_to_cpu(old_de->ino) != old_inode->i_ino)
+ if (!old_bh || (le16_to_cpu(old_de->ino) != old_inode->i_ino))
goto end_rename;
error = -EPERM;
if (!new_bh) {
error = bfs_add_entry(new_dir,
new_dentry->d_name.name,
- new_dentry->d_name.len, old_inode->i_ino);
+ new_dentry->d_name.len,
+ old_inode->i_ino);
if (error)
goto end_rename;
}
error = 0;
end_rename:
- unlock_kernel();
+ mutex_unlock(&info->bfs_lock);
brelse(old_bh);
brelse(new_bh);
return error;
}
-struct inode_operations bfs_dir_inops = {
+const struct inode_operations bfs_dir_inops = {
.create = bfs_create,
.lookup = bfs_lookup,
.link = bfs_link,
.rename = bfs_rename,
};
-static int bfs_add_entry(struct inode * dir, const unsigned char * name, int namelen, int ino)
+static int bfs_add_entry(struct inode *dir, const unsigned char *name,
+ int namelen, int ino)
{
- struct buffer_head * bh;
- struct bfs_dirent * de;
- int block, sblock, eblock, off, eoff;
+ struct buffer_head *bh;
+ struct bfs_dirent *de;
+ int block, sblock, eblock, off, pos;
int i;
dprintf("name=%s, namelen=%d\n", name, namelen);
sblock = BFS_I(dir)->i_sblock;
eblock = BFS_I(dir)->i_eblock;
- eoff = dir->i_size % BFS_BSIZE;
- for (block=sblock; block<=eblock; block++) {
+ for (block = sblock; block <= eblock; block++) {
bh = sb_bread(dir->i_sb, block);
- if(!bh)
+ if (!bh)
return -ENOSPC;
- for (off=0; off<BFS_BSIZE; off+=BFS_DIRENT_SIZE) {
+ for (off = 0; off < BFS_BSIZE; off += BFS_DIRENT_SIZE) {
de = (struct bfs_dirent *)(bh->b_data + off);
- if (block==eblock && off>=eoff) {
- /* Do not read/interpret the garbage in the end of eblock. */
- de->ino = 0;
- }
if (!de->ino) {
- if ((block-sblock)*BFS_BSIZE + off >= dir->i_size) {
+ pos = (block - sblock) * BFS_BSIZE + off;
+ if (pos >= dir->i_size) {
dir->i_size += BFS_DIRENT_SIZE;
dir->i_ctime = CURRENT_TIME_SEC;
}
dir->i_mtime = CURRENT_TIME_SEC;
mark_inode_dirty(dir);
de->ino = cpu_to_le16((u16)ino);
- for (i=0; i<BFS_NAMELEN; i++)
- de->name[i] = (i < namelen) ? name[i] : 0;
+ for (i = 0; i < BFS_NAMELEN; i++)
+ de->name[i] =
+ (i < namelen) ? name[i] : 0;
mark_buffer_dirty(bh);
brelse(bh);
return 0;
return -ENOSPC;
}
-static inline int bfs_namecmp(int len, const unsigned char * name, const char * buffer)
+static inline int bfs_namecmp(int len, const unsigned char *name,
+ const char *buffer)
{
- if (len < BFS_NAMELEN && buffer[len])
+ if ((len < BFS_NAMELEN) && buffer[len])
return 0;
return !memcmp(name, buffer, len);
}
-static struct buffer_head * bfs_find_entry(struct inode * dir,
- const unsigned char * name, int namelen, struct bfs_dirent ** res_dir)
+static struct buffer_head *bfs_find_entry(struct inode *dir,
+ const unsigned char *name, int namelen,
+ struct bfs_dirent **res_dir)
{
- unsigned long block, offset;
- struct buffer_head * bh;
- struct bfs_dirent * de;
+ unsigned long block = 0, offset = 0;
+ struct buffer_head *bh = NULL;
+ struct bfs_dirent *de;
*res_dir = NULL;
if (namelen > BFS_NAMELEN)
return NULL;
- bh = NULL;
- block = offset = 0;
+
while (block * BFS_BSIZE + offset < dir->i_size) {
if (!bh) {
bh = sb_bread(dir->i_sb, BFS_I(dir)->i_sblock + block);
}
de = (struct bfs_dirent *)(bh->b_data + offset);
offset += BFS_DIRENT_SIZE;
- if (le16_to_cpu(de->ino) && bfs_namecmp(namelen, name, de->name)) {
+ if (le16_to_cpu(de->ino) &&
+ bfs_namecmp(namelen, name, de->name)) {
*res_dir = de;
return bh;
}
git.openpandora.org / pandora-kernel.git / blobdiff