/*
* Fill in inode information from the fattr.
*/
static void
nfs_fill_inode(struct inode *inode, struct nfs_fattr *fattr)
{
/*
* Check whether the mode has been set, as we only want to
* do this once. (We don't allow inodes to change types.)
*/
if (inode->i_mode == 0) {
inode->i_mode = fattr->mode;
if (S_ISREG(inode->i_mode))
inode->i_op = &nfs_file_inode_operations;
else if (S_ISDIR(inode->i_mode))
inode->i_op = &nfs_dir_inode_operations;
else if (S_ISLNK(inode->i_mode))
inode->i_op = &nfs_symlink_inode_operations;
else if (S_ISCHR(inode->i_mode)) {
inode->i_op = &chrdev_inode_operations;
inode->i_rdev = to_kdev_t(fattr->rdev);
} else if (S_ISBLK(inode->i_mode)) {
inode->i_op = &blkdev_inode_operations;
inode->i_rdev = to_kdev_t(fattr->rdev);
} else if (S_ISFIFO(inode->i_mode))
init_fifo(inode);
else
inode->i_op = NULL;
/*
* Preset the size and mtime, as there's no need
* to invalidate the caches.
*/
inode->i_size = fattr->size;
inode->i_mtime = fattr->mtime.seconds;
NFS_OLDMTIME(inode) = fattr->mtime.seconds;
}
nfs_refresh_inode(inode, fattr);
}
void nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
{
int was_empty;
if (!inode || !fattr) {
printk("nfs_refresh_inode: inode or fattr is NULL\n");
return;
}
if (inode->i_ino != fattr->fileid) {
printk("nfs_refresh_inode: inode number mismatch\n");
return;
}
was_empty = (inode->i_mode == 0);
/*
* Some (broken?) NFS servers return 0 as the file type.
* We'll assume that 0 means the file type has not changed.
*/
if(!(fattr->mode & S_IFMT)){
inode->i_mode = (inode->i_mode & S_IFMT) |
(fattr->mode & ~S_IFMT);
}else{
inode->i_mode = fattr->mode;
}
inode->i_nlink = fattr->nlink;
inode->i_uid = fattr->uid;
inode->i_gid = fattr->gid;
/* Size changed from outside: invalidate caches on next read */
if (inode->i_size != fattr->size)
NFS_CACHEINV(inode);
if (NFS_OLDMTIME(inode) != fattr->mtime.seconds)
NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
inode->i_size = fattr->size;
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
inode->i_rdev = to_kdev_t(fattr->rdev);
else
inode->i_rdev = 0;
inode->i_blocks = fattr->blocks;
inode->i_atime = fattr->atime.seconds;
inode->i_mtime = fattr->mtime.seconds;
inode->i_ctime = fattr->ctime.seconds;
if (S_ISREG(inode->i_mode))
inode->i_op = &nfs_file_inode_operations;
else if (S_ISDIR(inode->i_mode))
inode->i_op = &nfs_dir_inode_operations;
else if (S_ISLNK(inode->i_mode))
inode->i_op = &nfs_symlink_inode_operations;
else if (S_ISCHR(inode->i_mode))
inode->i_op = &chrdev_inode_operations;
else if (S_ISBLK(inode->i_mode))
inode->i_op = &blkdev_inode_operations;
else if (S_ISFIFO(inode->i_mode)) {
if (was_empty)
init_fifo(inode);
} else
inode->i_op = NULL;
nfs_lookup_cache_refresh(inode, fattr);
}
static inline void revalidate_dir(struct nfs_server * server, struct inode * dir)
{
struct nfs_fattr fattr;
if (jiffies - NFS_READTIME(dir) < NFS_ATTRTIMEO(dir))
return;
NFS_READTIME(dir) = jiffies;
if (nfs_proc_getattr(server, NFS_FH(dir), &fattr) == 0) {
nfs_refresh_inode(dir, &fattr);
if (fattr.mtime.seconds == NFS_OLDMTIME(dir)) {
if ((NFS_ATTRTIMEO(dir) <<= 1) > server->acdirmax)
NFS_ATTRTIMEO(dir) = server->acdirmax;
return;
}
NFS_OLDMTIME(dir) = fattr.mtime.seconds;
}
/* invalidate directory cache here when we _really_ start caching */
}
