/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _FHTAB_H #define _FHTAB_H /* * Support for the fh mapping file for nfslog. */ #ifdef __cplusplus extern "C" { #endif /* * RPC dispatch table for file handles * Indexed by program, version, proc * Based on NFS dispatch table. * Differences: no xdr of args/res. */ struct nfsl_fh_proc_disp { void (*nfsl_dis_args)(); /* dispatch routine for proc */ bool_t (*xdr_args)(); /* XDR function for arguments */ bool_t (*xdr_res)(); /* XDR function for results */ int args_size; /* size of arguments struct */ int res_size; /* size of results struct */ }; struct nfsl_fh_vers_disp { int nfsl_dis_nprocs; /* number of procs */ struct nfsl_fh_proc_disp *nfsl_dis_proc_table; /* proc array */ }; struct nfsl_fh_prog_disp { int nfsl_dis_prog; /* program number */ int nfsl_dis_versmin; /* minimum version number */ int nfsl_dis_nvers; /* number of version values */ struct nfsl_fh_vers_disp *nfsl_dis_vers_table; /* versions array */ }; /* key comprised of inode/gen, currenly 8 or 10 bytes */ #define PRIMARY_KEY_LEN_MAX 16 typedef char fh_primary_key[PRIMARY_KEY_LEN_MAX]; /* link key - directory primary key plus name (upto 2 components) */ #define SECONDARY_KEY_LEN_MAX (PRIMARY_KEY_LEN_MAX + MAXPATHLEN) typedef char fh_secondary_key[SECONDARY_KEY_LEN_MAX]; /* * This is the runtime filehandle table entry. Because an fhandle_t is * used for both Version 2 and Version 3, we don't need two different types * of entries in the table. */ typedef struct fhlist_ent { fhandle_t fh; /* filehandle for this component */ time32_t mtime; /* modification time of entry */ time32_t atime; /* access time of entry */ fhandle_t dfh; /* parent filehandle for this component */ ushort_t flags; short reclen; /* length of record */ char name[MAXPATHLEN]; /* variable record */ } fhlist_ent; /* flags values */ #define EXPORT_POINT 0x01 /* if this is export point */ #define NAME_DELETED 0x02 /* is the dir info still valid for this fh? */ #define PUBLIC_PATH 0x04 /* is the dir info still valid for this fh? */ /* * Information maintained for the secondary key * Note that this is a variable length record with 4 variable size fields: * fhkey - primary key (must be there) * name - component name (must be there) * next - next link in list (could be null) * prev - previous link in list (could be null) */ #define MAX_LINK_VARBUF (3 * SECONDARY_KEY_LEN_MAX) typedef struct linkinfo_ent { fhandle_t dfh; /* directory filehandle */ time32_t mtime; /* modification time of entry */ time32_t atime; /* access time of entry */ ushort_t flags; short reclen; /* Actual record length */ short fhkey_offset; /* offset of fhkey, from head of record */ short name_offset; /* offset of name */ short next_offset; /* offset of next link key */ short prev_offset; /* offset of prev link key */ char varbuf[MAX_LINK_VARBUF]; /* max size for above */ } linkinfo_ent; /* Macros for lengths of the various fields */ #define LN_FHKEY_LEN(link) ((link)->name_offset - (link)->fhkey_offset) #define LN_NAME_LEN(link) ((link)->next_offset - (link)->name_offset) #define LN_NEXT_LEN(link) ((link)->prev_offset - (link)->next_offset) #define LN_PREV_LEN(link) ((link)->reclen - (link)->prev_offset) /* Macros for address of the various fields */ #define LN_FHKEY(link) (char *)((uintptr_t)(link) + (link)->fhkey_offset) #define LN_NAME(link) (char *)((uintptr_t)(link) + (link)->name_offset) #define LN_NEXT(link) (char *)((uintptr_t)(link) + (link)->next_offset) #define LN_PREV(link) (char *)((uintptr_t)(link) + (link)->prev_offset) /* Which record can reside in database */ typedef union { fhlist_ent fhlist_rec; linkinfo_ent link_rec; } db_record; void debug_opaque_print(FILE *, void *buf, int size); int db_add(char *fhpath, fhandle_t *dfh, char *name, fhandle_t *fh, uint_t flags); fhlist_ent *db_lookup(char *fhpath, fhandle_t *fh, fhlist_ent *fhrecp, int *errorp); fhlist_ent *db_lookup_link(char *fhpath, fhandle_t *dfh, char *name, fhlist_ent *fhrecp, int *errorp); int db_delete(char *fhpath, fhandle_t *fh); int db_delete_link(char *fhpath, fhandle_t *dfh, char *name); int db_rename_link(char *fhpath, fhandle_t *from_dfh, char *from_name, fhandle_t *to_dfh, char *to_name); void db_print_all_keys(char *fhpath, fsid_t *fsidp, FILE *fp); char *nfslog_get_path(fhandle_t *fh, char *name, char *fhpath, char *prtstr); extern fhandle_t public_fh; /* * Macro to determine which fhandle to use - input or public fh */ #define NFSLOG_GET_FHANDLE2(fh) \ (((fh)->fh_len > 0) ? fh : &public_fh) /* * Macro to determine which fhandle to use - input or public fh */ #define NFSLOG_GET_FHANDLE3(fh3) \ (((fh3)->fh3_length == sizeof (fhandle_t)) ? \ (fhandle_t *)&(fh3)->fh3_u.data : &public_fh) #ifdef __cplusplus } #endif #endif /* _FHTAB_H */
