bsd/hfs/hfs_cprotect.c

122  * Allocate and initialize a cprotect blob for a new cnode.
123  * Called from hfs_getnewvnode: cnode is locked exclusive.
124  * Read xattr data off the cnode. Then, if conditions permit,
128 cp_entry_init(struct cnode *cp, struct mount *mp)
197  * Set up initial key/class pair on cnode. The cnode does not yet exist,
210  * At this point, we hold the directory cnode lock exclusive if it is available.
213 cp_entry_create_keys(struct cprotect **entry_ptr, struct cnode *dcp, struct hfsmount *hfsmp,
306  * a cnode directly, we take a pointer to the cprotect struct.
353  * Called at hfs_reclaim_cnode: cnode is locked exclusive.
374  * Return a pointer to underlying cnode if there is one for this vnode.
375  * Done without taking cnode lock, inspecting only vnode state.
377 struct cnode *
389 	return (struct cnode*) vp->v_data;
402 	struct cnode *cp;
427 	 * We take only the shared cnode lock up-front.  If it turns out that
429 	 * shared cnode lock and acquire an exclusive lock.
441 		panic("Content Protection: uninitialized cnode %p", cp);
475 	struct cnode *cp;
512 	 * Take the cnode truncate lock exclusive because we want to manipulate the
577 	struct cnode *cp;
597 	 * Take the cnode truncate lock exclusive because we want to manipulate the
671  * Takes cnode lock, and upgrades to exclusive if modifying cprotect.
673  * Note that this function does *NOT* take the cnode truncate lock.  This is because
677  * Either way, the cnode lock still ultimately guards the keys.  We only rely on the
686 	struct cnode *cp = NULL;
722 		 * If this cnode is not content protected, simply return success.
808 	struct cnode *cp = NULL ;
822 	/* We know the vnode is in a valid state. acquire cnode and validate */
861  * normal VNOPS that read/write data to files.  Specifically, we already have the cnode
868 cp_handle_relocate (struct cnode *cp, struct hfsmount *hfsmp) {
989  * Stores new xattr data on the cnode.
990  * cnode lock held exclusive (if available).
994 int cp_setxattr(struct cnode *cp, struct cprotect *entry, struct hfsmount *hfsmp, uint32_t fileid, int options)
1000 	struct cnode *arg_cp = NULL;
1012 		 * we do not have a vnode/cnode yet. Use the specified fileid.
1094  * there may not be a cnode in existence yet (for example, after creating
1215  * Initializes a new cprotect entry with xattr data from the cnode.
1216  * cnode lock held shared
1219 cp_getxattr(struct cnode *cp, struct hfsmount *hfsmp, struct cprotect **outentry)
1450  * cnode lock held exclusive
1497 cp_check_access(struct cnode *cp, int vnop __unused)
1552 	 * take the truncate lock AND the cnode lock.  By taking
1582 				 * hfs_vnop_strategy does not take the cnode lock