コード例 #1
0
struct inode * coda_iget(struct super_block * sb, struct CodaFid * fid,
			 struct coda_vattr * attr)
{
	struct inode *inode;
	struct coda_inode_info *cii;
	unsigned long hash = coda_f2i(fid);

	inode = iget5_locked(sb, hash, coda_test_inode, coda_set_inode, fid);

	if (!inode)
		return ERR_PTR(-ENOMEM);

	if (inode->i_state & I_NEW) {
		cii = ITOC(inode);
		
		inode->i_ino = hash;
		
		cii->c_mapcount = 0;
		unlock_new_inode(inode);
	}

	
	coda_fill_inode(inode, attr);
	return inode;
}
コード例 #2
0
struct inode * coda_iget(struct super_block * sb, struct CodaFid * fid,
			 struct coda_vattr * attr)
{
	struct inode *inode;
	struct coda_inode_info *cii;
	unsigned long hash = coda_f2i(fid);

	inode = iget5_locked(sb, hash, coda_test_inode, coda_set_inode, fid);

	if (!inode)
		return ERR_PTR(-ENOMEM);

	if (inode->i_state & I_NEW) {
		cii = ITOC(inode);
		/* we still need to set i_ino for things like stat(2) */
		inode->i_ino = hash;
		/* inode is locked and unique, no need to grab cii->c_lock */
		cii->c_mapcount = 0;
		unlock_new_inode(inode);
	}

	/* always replace the attributes, type might have changed */
	coda_fill_inode(inode, attr);
	return inode;
}
コード例 #3
0
ファイル: cnode.c プロジェクト: iwangv/edimax-br-6528n
struct inode * coda_iget(struct super_block * sb, ViceFid * fid,
			 struct coda_vattr * attr)
{
	struct inode *inode;
	struct coda_inode_info *cii;
	ino_t ino = coda_f2i(fid);

	inode = iget4(sb, ino, coda_inocmp, fid);

	if ( !inode ) { 
		CDEBUG(D_CNODE, "coda_iget: no inode\n");
		return ERR_PTR(-ENOMEM);
	}

	/* check if the inode is already initialized */
	cii = ITOC(inode);
	if (coda_isnullfid(&cii->c_fid))
		/* new, empty inode found... initializing */
		cii->c_fid = *fid;

	/* we shouldnt see inode collisions anymore */
	if (!coda_fideq(fid, &cii->c_fid)) BUG();

	/* always replace the attributes, type might have changed */
	coda_fill_inode(inode, attr);
	return inode;
}
コード例 #4
0
ファイル: cnode.c プロジェクト: 119-org/hi3518-osdrv
/* Although we treat Coda file identifiers as immutable, there is one
 * special case for files created during a disconnection where they may
 * not be globally unique. When an identifier collision is detected we
 * first try to flush the cached inode from the kernel and finally
 * resort to renaming/rehashing in-place. Userspace remembers both old
 * and new values of the identifier to handle any in-flight upcalls.
 * The real solution is to use globally unique UUIDs as identifiers, but
 * retrofitting the existing userspace code for this is non-trivial. */
void coda_replace_fid(struct inode *inode, struct CodaFid *oldfid, 
		      struct CodaFid *newfid)
{
	struct coda_inode_info *cii = ITOC(inode);
	unsigned long hash = coda_f2i(newfid);
	
	BUG_ON(!coda_fideq(&cii->c_fid, oldfid));

	/* replace fid and rehash inode */
	/* XXX we probably need to hold some lock here! */
	remove_inode_hash(inode);
	cii->c_fid = *newfid;
	inode->i_ino = hash;
	__insert_inode_hash(inode, hash);
}
コード例 #5
0
void coda_replace_fid(struct inode *inode, struct CodaFid *oldfid, 
		      struct CodaFid *newfid)
{
	struct coda_inode_info *cii = ITOC(inode);
	unsigned long hash = coda_f2i(newfid);
	
	BUG_ON(!coda_fideq(&cii->c_fid, oldfid));

	
	
	remove_inode_hash(inode);
	cii->c_fid = *newfid;
	inode->i_ino = hash;
	__insert_inode_hash(inode, hash);
}
コード例 #6
0
ファイル: cnode.c プロジェクト: iwangv/edimax-br-6528n
void coda_replace_fid(struct inode *inode, struct ViceFid *oldfid, 
		      struct ViceFid *newfid)
{
	struct coda_inode_info *cii;
	
	cii = ITOC(inode);

	if (!coda_fideq(&cii->c_fid, oldfid))
		BUG();

	/* replace fid and rehash inode */
	/* XXX we probably need to hold some lock here! */
	remove_inode_hash(inode);
	cii->c_fid = *newfid;
	inode->i_ino = coda_f2i(newfid);
	insert_inode_hash(inode);
}
コード例 #7
0
struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb) 
{
	struct inode *inode;
	unsigned long hash = coda_f2i(fid);

	if ( !sb ) {
		printk("coda_fid_to_inode: no sb!\n");
		return NULL;
	}

	inode = ilookup5(sb, hash, coda_test_inode, fid);
	if ( !inode )
		return NULL;

	BUG_ON(inode->i_state & I_NEW);

	return inode;
}
コード例 #8
0
/* convert a fid to an inode. */
struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb)
{
	struct inode *inode;
	unsigned long hash = coda_f2i(fid);

	if ( !sb ) {
		printk("coda_fid_to_inode: no sb!\n");
		return NULL;
	}

	inode = ilookup5(sb, hash, coda_test_inode, fid);
	if ( !inode )
		return NULL;

	/* we should never see newly created inodes because we intentionally
	 * fail in the initialization callback */
	BUG_ON(inode->i_state & I_NEW);

	return inode;
}
コード例 #9
0
ファイル: cnode.c プロジェクト: iwangv/edimax-br-6528n
/* convert a fid to an inode. */
struct inode *coda_fid_to_inode(ViceFid *fid, struct super_block *sb) 
{
	ino_t nr;
	struct inode *inode;
	struct coda_inode_info *cii;

	if ( !sb ) {
		printk("coda_fid_to_inode: no sb!\n");
		return NULL;
	}

	CDEBUG(D_INODE, "%s\n", coda_f2s(fid));

	nr = coda_f2i(fid);
	inode = iget4(sb, nr, coda_inocmp, fid);
	if ( !inode ) {
		printk("coda_fid_to_inode: null from iget, sb %p, nr %ld.\n",
		       sb, (long)nr);
		return NULL;
	}

	cii = ITOC(inode);

	/* The inode could already be purged due to memory pressure */
	if (coda_isnullfid(&cii->c_fid)) {
		inode->i_nlink = 0;
		iput(inode);
		return NULL;
	}

	/* we shouldn't see inode collisions anymore */
	if ( !coda_fideq(fid, &cii->c_fid) ) BUG();

        CDEBUG(D_INODE, "found %ld\n", inode->i_ino);
        return inode;
}