int
affs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
{
struct inode *oldinode = old_dentry->d_inode;
struct inode *inode;
struct buffer_head *bh;
unsigned long i;
int error;
pr_debug("AFFS: link(%lu,%lu,\"%.*s\")\n",oldinode->i_ino,dir->i_ino,
(int)dentry->d_name.len,dentry->d_name.name);
/* N.B. Do we need this test? The dentry must be negative ... */
bh = affs_find_entry(dir,dentry,&i);
if (bh) {
affs_brelse(bh);
return -EEXIST;
}
if (oldinode->u.affs_i.i_hlink) { /* Cannot happen */
affs_warning(dir->i_sb,"link","Impossible link to link");
return -EINVAL;
}
error = -ENOSPC;
if (!(inode = affs_new_inode(dir)))
goto out;
inode->i_op = oldinode->i_op;
inode->u.affs_i.i_protect = mode_to_prot(oldinode->i_mode);
inode->u.affs_i.i_original = oldinode->i_ino;
inode->u.affs_i.i_hlink = 1;
inode->i_mtime = oldinode->i_mtime;
if (S_ISDIR(oldinode->i_mode))
error = affs_add_entry(dir,oldinode,inode,dentry,ST_LINKDIR);
else
error = affs_add_entry(dir,oldinode,inode,dentry,ST_LINKFILE);
if (error)
inode->i_nlink = 0;
else {
dir->i_version = ++event;
mark_inode_dirty(dir);
mark_inode_dirty(oldinode);
oldinode->i_count++;
d_instantiate(dentry,oldinode);
}
mark_inode_dirty(inode);
iput(inode);
out:
return error;
}
int
affs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
struct inode *inode;
int error;
pr_debug("AFFS: mkdir(%lu,\"%.*s\",0%o)\n",dir->i_ino,
(int)dentry->d_name.len,dentry->d_name.name,mode);
inode = affs_new_inode(dir);
if (!inode)
return -ENOSPC;
inode->i_mode = S_IFDIR | mode;
mode_to_prot(inode);
inode->i_op = &affs_dir_inode_operations;
inode->i_fop = &affs_dir_operations;
error = affs_add_entry(dir, inode, dentry, ST_USERDIR);
if (error) {
inode->i_nlink = 0;
mark_inode_dirty(inode);
iput(inode);
return error;
}
return 0;
}
int
affs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
{
struct super_block *sb = dir->i_sb;
struct inode *inode;
int error;
pr_debug("AFFS: create(%lu,\"%.*s\",0%o)\n",dir->i_ino,(int)dentry->d_name.len,
dentry->d_name.name,mode);
inode = affs_new_inode(dir);
if (!inode)
return -ENOSPC;
inode->i_mode = mode;
mode_to_prot(inode);
mark_inode_dirty(inode);
inode->i_op = &affs_file_inode_operations;
inode->i_fop = &affs_file_operations;
inode->i_mapping->a_ops = (AFFS_SB(sb)->s_flags & SF_OFS) ? &affs_aops_ofs : &affs_aops;
error = affs_add_entry(dir, inode, dentry, ST_FILE);
if (error) {
inode->i_nlink = 0;
iput(inode);
return error;
}
return 0;
}
int
affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
struct inode *inode;
int error;
pr_debug("%s(%lu,\"%pd\",0%ho)\n",
__func__, dir->i_ino, dentry, mode);
inode = affs_new_inode(dir);
if (!inode)
return -ENOSPC;
inode->i_mode = S_IFDIR | mode;
mode_to_prot(inode);
inode->i_op = &affs_dir_inode_operations;
inode->i_fop = &affs_dir_operations;
error = affs_add_entry(dir, inode, dentry, ST_USERDIR);
if (error) {
clear_nlink(inode);
mark_inode_dirty(inode);
iput(inode);
return error;
}
return 0;
}
int
affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl)
{
struct super_block *sb = dir->i_sb;
struct inode *inode;
int error;
pr_debug("%s(%lu,\"%pd\",0%ho)\n",
__func__, dir->i_ino, dentry, mode);
inode = affs_new_inode(dir);
if (!inode)
return -ENOSPC;
inode->i_mode = mode;
mode_to_prot(inode);
mark_inode_dirty(inode);
inode->i_op = &affs_file_inode_operations;
inode->i_fop = &affs_file_operations;
inode->i_mapping->a_ops = (AFFS_SB(sb)->s_flags & SF_OFS) ? &affs_aops_ofs : &affs_aops;
error = affs_add_entry(dir, inode, dentry, ST_FILE);
if (error) {
clear_nlink(inode);
iput(inode);
return error;
}
return 0;
}
int
affs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
struct inode *inode;
int error;
pr_debug("AFFS: mkdir(%lu,\"%.*s\",0%o)\n",dir->i_ino,
(int)dentry->d_name.len,dentry->d_name.name,mode);
error = -ENOSPC;
inode = affs_new_inode(dir);
if (!inode)
goto out;
inode->i_op = &affs_dir_inode_operations;
error = affs_add_entry(dir,NULL,inode,dentry,ST_USERDIR);
if (error)
goto out_iput;
inode->i_mode = S_IFDIR | S_ISVTX | (mode & 0777 & ~current->fs->umask);
inode->u.affs_i.i_protect = mode_to_prot(inode->i_mode);
d_instantiate(dentry,inode);
mark_inode_dirty(inode);
dir->i_version = ++event;
mark_inode_dirty(dir);
out:
return error;
out_iput:
inode->i_nlink = 0;
mark_inode_dirty(inode);
iput(inode);
goto out;
}
int
affs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
{
struct inode *inode = old_dentry->d_inode;
pr_debug("AFFS: link(%u, %u, \"%.*s\")\n", (u32)inode->i_ino, (u32)dir->i_ino,
(int)dentry->d_name.len,dentry->d_name.name);
return affs_add_entry(dir, inode, dentry, ST_LINKFILE);
}
int
affs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
{
struct inode *inode = old_dentry->d_inode;
pr_debug("%s(%lu, %lu, \"%pd\")\n", __func__, inode->i_ino, dir->i_ino,
dentry);
return affs_add_entry(dir, inode, dentry, ST_LINKFILE);
}
int
affs_create(struct inode *dir, struct dentry *dentry, int mode)
{
struct inode *inode;
int error;
pr_debug("AFFS: create(%lu,\"%.*s\",0%o)\n",dir->i_ino,(int)dentry->d_name.len,
dentry->d_name.name,mode);
error = -ENOSPC;
inode = affs_new_inode(dir);
if (!inode)
goto out;
pr_debug("AFFS: ino=%lu\n",inode->i_ino);
if (dir->i_sb->u.affs_sb.s_flags & SF_OFS)
inode->i_op = &affs_file_inode_operations_ofs;
else
inode->i_op = &affs_file_inode_operations;
error = affs_add_entry(dir,NULL,inode,dentry,ST_FILE);
if (error)
goto out_iput;
inode->i_mode = mode;
inode->u.affs_i.i_protect = mode_to_prot(inode->i_mode);
d_instantiate(dentry,inode);
mark_inode_dirty(inode);
dir->i_version = ++event;
mark_inode_dirty(dir);
out:
return error;
out_iput:
inode->i_nlink = 0;
mark_inode_dirty(inode);
iput(inode);
goto out;
}
int
affs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
{
struct super_block *sb = dir->i_sb;
struct buffer_head *bh;
struct inode *inode;
char *p;
int i, maxlen, error;
char c, lc;
pr_debug("AFFS: symlink(%lu,\"%.*s\" -> \"%s\")\n",dir->i_ino,
(int)dentry->d_name.len,dentry->d_name.name,symname);
maxlen = AFFS_SB(sb)->s_hashsize * sizeof(u32) - 1;
inode = affs_new_inode(dir);
if (!inode)
return -ENOSPC;
inode->i_op = &affs_symlink_inode_operations;
inode->i_data.a_ops = &affs_symlink_aops;
inode->i_mode = S_IFLNK | 0777;
mode_to_prot(inode);
error = -EIO;
bh = affs_bread(sb, inode->i_ino);
if (!bh)
goto err;
i = 0;
p = (char *)AFFS_HEAD(bh)->table;
lc = '/';
if (*symname == '/') {
struct affs_sb_info *sbi = AFFS_SB(sb);
while (*symname == '/')
symname++;
spin_lock(&sbi->symlink_lock);
while (sbi->s_volume[i]) /* Cannot overflow */
*p++ = sbi->s_volume[i++];
spin_unlock(&sbi->symlink_lock);
}
while (i < maxlen && (c = *symname++)) {
if (c == '.' && lc == '/' && *symname == '.' && symname[1] == '/') {
*p++ = '/';
i++;
symname += 2;
lc = '/';
} else if (c == '.' && lc == '/' && *symname == '/') {
symname++;
lc = '/';
} else {
*p++ = c;
lc = c;
i++;
}
if (lc == '/')
while (*symname == '/')
symname++;
}
*p = 0;
mark_buffer_dirty_inode(bh, inode);
affs_brelse(bh);
mark_inode_dirty(inode);
error = affs_add_entry(dir, inode, dentry, ST_SOFTLINK);
if (error)
goto err;
return 0;
err:
inode->i_nlink = 0;
mark_inode_dirty(inode);
iput(inode);
return error;
}
int
affs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
{
struct buffer_head *bh;
struct inode *inode;
char *p;
unsigned long tmp;
int i, maxlen, error;
char c, lc;
pr_debug("AFFS: symlink(%lu,\"%.*s\" -> \"%s\")\n",dir->i_ino,
(int)dentry->d_name.len,dentry->d_name.name,symname);
maxlen = 4 * AFFS_I2HSIZE(dir) - 1;
error = -ENOSPC;
inode = affs_new_inode(dir);
if (!inode)
goto out;
inode->i_op = &affs_symlink_inode_operations;
inode->i_mode = S_IFLNK | 0777;
inode->u.affs_i.i_protect = mode_to_prot(inode->i_mode);
error = -EIO;
bh = affs_bread(inode->i_dev,inode->i_ino,AFFS_I2BSIZE(inode));
if (!bh)
goto out_iput;
i = 0;
p = ((struct slink_front *)bh->b_data)->symname;
lc = '/';
if (*symname == '/') {
while (*symname == '/')
symname++;
while (inode->i_sb->u.affs_sb.s_volume[i]) /* Cannot overflow */
*p++ = inode->i_sb->u.affs_sb.s_volume[i++];
}
while (i < maxlen && (c = *symname++)) {
if (c == '.' && lc == '/' && *symname == '.' && symname[1] == '/') {
*p++ = '/';
i++;
symname += 2;
lc = '/';
} else if (c == '.' && lc == '/' && *symname == '/') {
symname++;
lc = '/';
} else {
*p++ = c;
lc = c;
i++;
}
if (lc == '/')
while (*symname == '/')
symname++;
}
*p = 0;
mark_buffer_dirty(bh,1);
affs_brelse(bh);
mark_inode_dirty(inode);
/* N.B. This test shouldn't be necessary ... dentry must be negative */
error = -EEXIST;
bh = affs_find_entry(dir,dentry,&tmp);
if (bh)
goto out_release;
/* N.B. Shouldn't we add the entry before dirtying the buffer? */
error = affs_add_entry(dir,NULL,inode,dentry,ST_SOFTLINK);
if (error)
goto out_release;
d_instantiate(dentry,inode);
dir->i_version = ++event;
mark_inode_dirty(dir);
out:
return error;
out_release:
affs_brelse(bh);
out_iput:
inode->i_nlink = 0;
mark_inode_dirty(inode);
iput(inode);
goto out;
}