return container_of(inode, struct mqueue_inode_info, vfs_inode);
}
-static struct inode *mqueue_get_inode(struct super_block *sb, int mode)
+static struct inode *mqueue_get_inode(struct super_block *sb, int mode,
+ struct mq_attr *attr)
{
struct inode *inode;
memset(&info->attr, 0, sizeof(info->attr));
info->attr.mq_maxmsg = DFLT_MSGMAX;
info->attr.mq_msgsize = DFLT_MSGSIZEMAX;
- info->messages = kmalloc(DFLT_MSGMAX * sizeof(struct msg_msg *), GFP_KERNEL);
+ if (attr) {
+ info->attr.mq_maxmsg = attr->mq_maxmsg;
+ info->attr.mq_msgsize = attr->mq_msgsize;
+ }
+ info->messages = kmalloc(info->attr.mq_maxmsg * sizeof(struct msg_msg *), GFP_KERNEL);
if (!info->messages) {
make_bad_inode(inode);
iput(inode);
sb->s_magic = MQUEUE_MAGIC;
sb->s_op = &mqueue_super_ops;
- inode = mqueue_get_inode(sb, S_IFDIR | S_ISVTX | S_IRWXUGO);
+ inode = mqueue_get_inode(sb, S_IFDIR | S_ISVTX | S_IRWXUGO, NULL);
if (!inode)
return -ENOMEM;
int mode, struct nameidata *nd)
{
struct inode *inode;
+ struct mq_attr *attr = dentry->d_fsdata;
int error;
spin_lock(&mq_lock);
queues_count++;
spin_unlock(&mq_lock);
- inode = mqueue_get_inode(dir->i_sb, mode);
+ inode = mqueue_get_inode(dir->i_sb, mode, attr);
if (!inode) {
error = -ENOMEM;
spin_lock(&mq_lock);
int oflag, mode_t mode, struct mq_attr __user *u_attr)
{
struct file *filp;
- struct inode *inode;
- struct mqueue_inode_info *info;
- struct msg_msg **msgs = NULL;
struct mq_attr attr;
int ret;
attr.mq_msgsize > msgsize_max)
return ERR_PTR(-EINVAL);
}
- msgs = kmalloc(attr.mq_maxmsg * sizeof(*msgs), GFP_KERNEL);
- if (!msgs)
- return ERR_PTR(-ENOMEM);
- } else {
- msgs = NULL;
+ /* store for use during create */
+ dentry->d_fsdata = &attr;
}
ret = vfs_create(dir->d_inode, dentry, mode, NULL);
- if (ret) {
- kfree(msgs);
+ dentry->d_fsdata = NULL;
+ if (ret)
return ERR_PTR(ret);
- }
-
- inode = dentry->d_inode;
- info = MQUEUE_I(inode);
-
- if (msgs) {
- info->attr.mq_maxmsg = attr.mq_maxmsg;
- info->attr.mq_msgsize = attr.mq_msgsize;
- kfree(info->messages);
- info->messages = msgs;
- }
filp = dentry_open(dentry, mqueue_mnt, oflag);
if (!IS_ERR(filp))
/* First try to allocate memory, before doing anything with
* existing queues. */
- msg_ptr = load_msg((void *)u_msg_ptr, msg_len);
+ msg_ptr = load_msg(u_msg_ptr, msg_len);
if (unlikely(IS_ERR(msg_ptr))) {
ret = PTR_ERR(msg_ptr);
goto out_fput;