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);
}
/*
* The "read_inode" function doesn't actually do anything:
* the real data is filled in later in nfs_fhget. Here we
* just mark the cache times invalid, and zero out i_mode
* (the latter makes "nfs_refresh_inode" do the right thing
* wrt pipe inodes)
*/
static void
nfs_read_inode(struct inode * inode)
{
inode->i_blksize = inode->i_sb->s_blocksize;
inode->i_mode = 0;
inode->i_rdev = 0;
inode->i_op = NULL;
NFS_CACHEINV(inode);
NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
}
/*
* Invalidate the local caches
*/
static void
nfs_zap_caches(struct inode *inode)
{
NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
NFS_CACHEINV(inode);
if (S_ISDIR(inode->i_mode))
nfs_invalidate_dircache(inode);
else
invalidate_inode_pages(inode);
}
/*
* The "read_inode" function doesn't actually do anything:
* the real data is filled in later in nfs_fhget. Here we
* just mark the cache times invalid, and zero out i_mode
* (the latter makes "nfs_refresh_inode" do the right thing
* wrt pipe inodes)
*/
static void
nfs_read_inode(struct inode * inode)
{
inode->i_blksize = inode->i_sb->s_blocksize;
inode->i_mode = 0;
inode->i_rdev = 0;
/* We can't support UPDATE_ATIME(), since the server will reset it */
inode->i_flags |= S_NOATIME;
INIT_LIST_HEAD(&inode->u.nfs_i.read);
INIT_LIST_HEAD(&inode->u.nfs_i.dirty);
INIT_LIST_HEAD(&inode->u.nfs_i.commit);
INIT_LIST_HEAD(&inode->u.nfs_i.writeback);
NFS_CACHEINV(inode);
NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
NFS_ATTRTIMEO_UPDATE(inode) = jiffies;
}
/*
* Invalidate the local caches
*/
static void nfs_zap_caches_locked(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
int mode = inode->i_mode;
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = jiffies;
memset(NFS_I(inode)->cookieverf, 0, sizeof(NFS_I(inode)->cookieverf));
if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
else
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL|NFS_INO_REVAL_PAGECACHE;
}
/*
* The "read_inode" function doesn't actually do anything:
* the real data is filled in later in nfs_fhget. Here we
* just mark the cache times invalid, and zero out i_mode
* (the latter makes "nfs_refresh_inode" do the right thing
* wrt pipe inodes)
*/
static void
nfs_read_inode(struct inode * inode)
{
inode->i_blksize = inode->i_sb->s_blocksize;
inode->i_mode = 0;
inode->i_rdev = 0;
NFS_FILEID(inode) = 0;
NFS_FSID(inode) = 0;
INIT_LIST_HEAD(&inode->u.nfs_i.read);
INIT_LIST_HEAD(&inode->u.nfs_i.dirty);
INIT_LIST_HEAD(&inode->u.nfs_i.commit);
INIT_LIST_HEAD(&inode->u.nfs_i.writeback);
inode->u.nfs_i.nread = 0;
inode->u.nfs_i.ndirty = 0;
inode->u.nfs_i.ncommit = 0;
inode->u.nfs_i.npages = 0;
NFS_CACHEINV(inode);
NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
NFS_ATTRTIMEO_UPDATE(inode) = jiffies;
}
