/*
- * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#define LOCKLEAF 0x0004 /* lock inode on return */
#define LOCKPARENT 0x0008 /* want parent vnode returned */
#define WANTPARENT 0x0010 /* want parent vnode returned */
+
+#ifdef KERNEL_PRIVATE
+#define CN_SECLUDE_RENAME 0x10000000 /*rename iff ￢(hard-linked ∨ opened ∨ mmaped)*/
+#define CN_RAW_ENCRYPTED 0x80000000 /* Look-up is for RO raw encrypted access. */
#endif
+#endif // KERNEL
#ifdef BSD_KERNEL_PRIVATE
/*
* Encapsulation of namei parameters.
*/
-struct nameidata {
+struct nameidata {
/*
* Arguments to namei/lookup.
*/
user_addr_t ni_dirp; /* pathname pointer */
enum uio_seg ni_segflg; /* location of pathname */
+#if CONFIG_TRIGGERS
+ enum path_operation ni_op; /* intended operation, see enum path_operation in vnode.h */
+#endif /* CONFIG_TRIGGERS */
/*
* Arguments to lookup.
*/
u_long ni_loopcnt; /* count of symlinks encountered */
struct componentname ni_cnd;
+ int32_t ni_flag;
+ int ni_ncgeneration; /* For a batched vnop, grab generation beforehand */
};
+#define NAMEI_CONTLOOKUP 0x002 /* Continue processing a lookup which was partially processed in a compound VNOP */
+#define NAMEI_TRAILINGSLASH 0x004 /* There was at least one trailing slash after last component */
+#define NAMEI_UNFINISHED 0x008 /* We broke off a lookup to do a compound op */
+/*
+ * XXX Hack: we need to encode the intended VNOP in order to
+ * be able to include information about which operations a filesystem
+ * supports in the decision to break off a lookup early.
+ */
+#define NAMEI_COMPOUNDOPEN 0x010
+#define NAMEI_COMPOUNDREMOVE 0x020
+#define NAMEI_COMPOUNDMKDIR 0x040
+#define NAMEI_COMPOUNDRMDIR 0x080
+#define NAMEI_COMPOUNDRENAME 0x100
+#define NAMEI_COMPOUND_OP_MASK (NAMEI_COMPOUNDOPEN | NAMEI_COMPOUNDREMOVE | NAMEI_COMPOUNDMKDIR | NAMEI_COMPOUNDRMDIR | NAMEI_COMPOUNDRENAME)
+
#ifdef KERNEL
/*
* namei operational modifier flags, stored in ni_cnd.flags
#define NOFOLLOW 0x00000000 /* do not follow symbolic links (pseudo) */
/* public FOLLOW 0x00000040 see vnode.h */
#define SHAREDLEAF 0x00000080 /* OK to have shared leaf lock */
-/* public NOTRIGGER 0x10000000 see vnode.h */
#define MODMASK 0x100000fc /* mask of operational modifiers */
/*
* Namei parameter descriptors.
#define AUDITVNPATH2 0x00200000 /* audit the path/vnode info */
#define USEDVP 0x00400000 /* start the lookup at ndp.ni_dvp */
#define CN_VOLFSPATH 0x00800000 /* user path was a volfs style path */
-#ifndef __LP64__
-#define FSNODELOCKHELD 0x01000000
-#endif /* __LP64__ */
#define UNIONCREATED 0x02000000 /* union fs creation of vnode */
#if NAMEDRSRCFORK
#define CN_WANTSRSRCFORK 0x04000000
#define CN_ALLOWRSRCFORK 0x08000000
-#endif
-/* public NOTRIGGER 0x10000000 see vnode.h */
+#endif // NAMEDRSRCFORK
+// CN_SECLUDE_RENAME is defined above as 0x10000000 (SPI)
#define CN_NBMOUNTLOOK 0x20000000 /* do not block for cross mount lookups */
+#ifdef BSD_KERNEL_PRIVATE
+#define CN_SKIPNAMECACHE 0x40000000 /* skip cache during lookup(), allow FS to handle all components */
+#endif
+// CN_RAW_ENCRYPTED is defined above as 0x80000000 (SPI)
/*
* Initialization of an nameidata structure.
*/
-#define NDINIT(ndp, op, flags, segflg, namep, ctx) { \
+
+#if CONFIG_TRIGGERS
+/* Note: vnode triggers require more precise path operation (ni_op) */
+
+#define NDINIT(ndp, op, pop, flags, segflg, namep, ctx) { \
+ (ndp)->ni_cnd.cn_nameiop = op; \
+ (ndp)->ni_op = pop; \
+ (ndp)->ni_cnd.cn_flags = flags; \
+ if ((segflg) == UIO_USERSPACE) { \
+ (ndp)->ni_segflg = ((IS_64BIT_PROCESS(vfs_context_proc(ctx))) ? UIO_USERSPACE64 : UIO_USERSPACE32); \
+ } \
+ else { \
+ (ndp)->ni_segflg = segflg; \
+ } \
+ (ndp)->ni_dirp = namep; \
+ (ndp)->ni_cnd.cn_context = ctx; \
+ (ndp)->ni_flag = 0; \
+ (ndp)->ni_cnd.cn_ndp = (ndp); \
+}
+#else
+#define NDINIT(ndp, op, _unused_, flags, segflg, namep, ctx) { \
(ndp)->ni_cnd.cn_nameiop = op; \
(ndp)->ni_cnd.cn_flags = flags; \
if ((segflg) == UIO_USERSPACE) { \
} \
(ndp)->ni_dirp = namep; \
(ndp)->ni_cnd.cn_context = ctx; \
+ (ndp)->ni_flag = 0; \
+ (ndp)->ni_cnd.cn_ndp = (ndp); \
}
+#endif /* CONFIG_TRIGGERS */
+
#endif /* KERNEL */
/*
* This structure describes the elements in the cache of recent
* names looked up by namei.
*/
-
-#define NCHASHMASK 0x7fffffff
-
struct namecache {
TAILQ_ENTRY(namecache) nc_entry; /* chain of all entries */
- LIST_ENTRY(namecache) nc_hash; /* hash chain */
- LIST_ENTRY(namecache) nc_child; /* chain of ncp's that are children of a vp */
+ TAILQ_ENTRY(namecache) nc_child; /* chain of ncp's that are children of a vp */
union {
LIST_ENTRY(namecache) nc_link; /* chain of ncp's that 'name' a vp */
TAILQ_ENTRY(namecache) nc_negentry; /* chain of ncp's that 'name' a vp */
} nc_un;
+ LIST_ENTRY(namecache) nc_hash; /* hash chain */
vnode_t nc_dvp; /* vnode of parent of name */
vnode_t nc_vp; /* vnode the name refers to */
- unsigned int nc_whiteout:1, /* name has whiteout applied */
- nc_hashval:31; /* hashval of stringname */
+ unsigned int nc_hashval; /* hashval of stringname */
const char *nc_name; /* pointer to segment name in string cache */
};
int lookup(struct nameidata *ndp);
int relookup(struct vnode *dvp, struct vnode **vpp,
struct componentname *cnp);
+int lookup_traverse_union(vnode_t dvp, vnode_t *new_dvp, vfs_context_t ctx);
+void lookup_compound_vnop_post_hook(int error, vnode_t dvp, vnode_t vp, struct nameidata *ndp, int did_create);
/*
* namecache function prototypes
*/
void cache_purgevfs(mount_t mp);
int cache_lookup_path(struct nameidata *ndp, struct componentname *cnp, vnode_t dp,
- vfs_context_t context, int *trailing_slash, int *dp_authorized, vnode_t last_dp);
+ vfs_context_t context, int *dp_authorized, vnode_t last_dp);
void vnode_cache_authorized_action(vnode_t vp, vfs_context_t context, kauth_action_t action);
void vnode_uncache_authorized_action(vnode_t vp, kauth_action_t action);
boolean_t vnode_cache_is_stale(vnode_t vp);
boolean_t vnode_cache_is_authorized(vnode_t vp, vfs_context_t context, kauth_action_t action);
+int lookup_validate_creation_path(struct nameidata *ndp);
+int namei_compound_available(vnode_t dp, struct nameidata *ndp);
#endif /* KERNEL */
projects / apple / xnu.git / blobdiff