xnu-517.3.7.tar.gz

[apple/xnu.git] / bsd / sys / namei.h

diff --git a/bsd/sys/namei.h b/bsd/sys/namei.h
index 40faa46e9f9182cc79e3c7921067a348b78220da..5bfd07044191cf3dae0c443277f945c1efc40111 100644 (file)
--- a/bsd/sys/namei.h
+++ b/bsd/sys/namei.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
@@ -142,6 +142,7 @@ struct nameidata {
 #define        NOCACHE         0x0020  /* name must not be left in cache */
 #define        FOLLOW          0x0040  /* follow symbolic links */
 #define        NOFOLLOW        0x0000  /* do not follow symbolic links (pseudo) */
+#define        SHAREDLEAF      0x0080  /* OK to have shared leaf lock */
 #define        MODMASK         0x00fc  /* mask of operational modifiers */
 /*
  * Namei parameter descriptors.
@@ -169,8 +170,11 @@ struct nameidata {
 #define        ISWHITEOUT      0x020000 /* found whiteout */
 #define        DOWHITEOUT      0x040000 /* do whiteouts */
 #define        WILLBEDIR       0x080000 /* new files will be dirs; allow trailing / */
+#define        AUDITVNPATH1    0x100000 /* audit the path/vnode info */
+#define        AUDITVNPATH2    0x200000 /* audit the path/vnode info */
+#define        USEDVP          0x400000 /* start the lookup at ndp.ni_dvp */
 #define        NODELETEBUSY    0x800000 /* donot delete busy files (Carbon semantic) */
-#define        PARAMASK        0x0fff00 /* mask of parameter descriptors */
+#define        PARAMASK        0x3fff00 /* mask of parameter descriptors */
 /*
  * Initialization of an nameidata structure.
  */
@@ -199,8 +203,7 @@ struct      namecache {
        u_long  nc_dvpid;               /* capability number of nc_dvp */
        struct  vnode *nc_vp;           /* vnode the name refers to */
        u_long  nc_vpid;                /* capability number of nc_vp */
-       char    nc_nlen;                /* length of name */
-       char    nc_name[NCHNAMLEN];     /* segment name */
+       char    *nc_name;               /* segment name */
 };
 
 #ifdef KERNEL
@@ -218,6 +221,16 @@ void       cache_enter __P((struct vnode *dvp, struct vnode *vpp,
                struct componentname *cnp));
 void   cache_purge __P((struct vnode *vp));
 void    cache_purgevfs __P((struct mount *mp));
+
+//
+// Global string-cache routines.  You can pass zero for nc_hash
+// if you don't know it (add_name() will then compute the hash).
+// There are no flags for now but maybe someday.
+// 
+char *add_name(const char *name, size_t len, u_int nc_hash, u_int flags);
+int   remove_name(const char *name);
+
+
 #endif /* KERNEL */
 
 /*