X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..4ba76501152d51ccb5647018f3192c6096367d48:/bsd/nfs/nfsm_subs.h?ds=inline diff --git a/bsd/nfs/nfsm_subs.h b/bsd/nfs/nfsm_subs.h index 75f019ce0..b16669fc5 100644 --- a/bsd/nfs/nfsm_subs.h +++ b/bsd/nfs/nfsm_subs.h @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2011 Apple Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ - * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. - * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ + * + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. + * + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. - * - * @APPLE_LICENSE_HEADER_END@ + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. + * + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ /* @@ -63,422 +69,725 @@ #ifndef _NFS_NFSM_SUBS_H_ #define _NFS_NFSM_SUBS_H_ +#include + +#ifdef __APPLE_API_PRIVATE + +int nfsm_rpchead(struct nfsreq *, mbuf_t, u_int64_t *, mbuf_t *); +int nfsm_rpchead2(struct nfsmount *, int, int, int, int, int, kauth_cred_t, struct nfsreq *, mbuf_t, u_int64_t *, mbuf_t *); + +int nfsm_chain_new_mbuf(struct nfsm_chain *, size_t); +int nfsm_chain_add_opaque_f(struct nfsm_chain *, const u_char *, uint32_t); +int nfsm_chain_add_opaque_nopad_f(struct nfsm_chain *, const u_char *, uint32_t); +int nfsm_chain_add_uio(struct nfsm_chain *, uio_t, uint32_t); +int nfsm_chain_add_fattr4_f(struct nfsm_chain *, struct vnode_attr *, struct nfsmount *); +int nfsm_chain_add_v2sattr_f(struct nfsm_chain *, struct vnode_attr *, uint32_t); +int nfsm_chain_add_v3sattr_f(struct nfsmount *, struct nfsm_chain *, struct vnode_attr *); +int nfsm_chain_add_string_nfc(struct nfsm_chain *, const uint8_t *, uint32_t); + +int nfsm_chain_advance(struct nfsm_chain *, uint32_t); +int nfsm_chain_offset(struct nfsm_chain *); +int nfsm_chain_reverse(struct nfsm_chain *, uint32_t); +int nfsm_chain_get_opaque_pointer_f(struct nfsm_chain *, uint32_t, u_char **); +int nfsm_chain_get_opaque_f(struct nfsm_chain *, uint32_t, u_char *); +int nfsm_chain_get_uio(struct nfsm_chain *, uint32_t, uio_t); +int nfsm_chain_get_fh_attr(struct nfsmount *, struct nfsm_chain *, nfsnode_t, + vfs_context_t, int, uint64_t *, fhandle_t *, struct nfs_vattr *); +int nfsm_chain_get_wcc_data_f(struct nfsm_chain *, nfsnode_t, struct timespec *, int *, u_int64_t *); +int nfsm_chain_get_secinfo(struct nfsm_chain *, uint32_t *, int *); + +#if NFSSERVER +void nfsm_adj(mbuf_t, int, int); +int nfsm_mbuf_get_list(size_t, mbuf_t *, int *); + +int nfsm_chain_add_fattr(struct nfsrv_descript *, struct nfsm_chain *, struct vnode_attr *); +int nfsm_chain_add_wcc_data_f(struct nfsrv_descript *, struct nfsm_chain *, int, + struct vnode_attr *, int, struct vnode_attr *); +int nfsm_chain_get_path_namei(struct nfsm_chain *, uint32_t, struct nameidata *); +int nfsm_chain_get_sattr(struct nfsrv_descript *, struct nfsm_chain *, struct vnode_attr *); +int nfsm_chain_trim_data(struct nfsm_chain *, int, int *); +#endif /* NFSSERVER */ + +/* check name length */ +#define nfsm_name_len_check(E, ND, LEN) \ + do { \ + if (E) break; \ + if (((ND)->nd_vers == NFS_VER2) && ((LEN) > NFS_MAXNAMLEN)) \ + (E) = NFSERR_NAMETOL; \ + if ((LEN) <= 0) \ + error = EBADRPC; \ + } while (0) + +#define nfsm_assert(E, COND, ERR) \ + do { \ + if (E) break; \ + if (!(COND)) \ + (E) = (ERR); \ + } while (0) + +/* Initialize a vnode_attr to retrieve attributes for the NFS server. */ +#define nfsm_srv_vattr_init(VAP, VERS) \ + do { \ + VATTR_INIT(VAP); \ + VATTR_WANTED((VAP), va_type); \ + VATTR_WANTED((VAP), va_mode); \ + VATTR_WANTED((VAP), va_nlink); \ + VATTR_WANTED((VAP), va_uid); \ + VATTR_WANTED((VAP), va_gid); \ + VATTR_WANTED((VAP), va_data_size); \ + VATTR_WANTED((VAP), va_data_alloc); \ + VATTR_WANTED((VAP), va_rdev); \ + VATTR_WANTED((VAP), va_fsid); \ + VATTR_WANTED((VAP), va_fileid); \ + VATTR_WANTED((VAP), va_access_time); \ + VATTR_WANTED((VAP), va_modify_time); \ + VATTR_WANTED((VAP), va_change_time); \ + if ((VERS) == NFS_VER2) \ + VATTR_WANTED((VAP), va_iosize); \ + if ((VERS) == NFS_VER3) \ + VATTR_WANTED((VAP), va_filerev); \ + } while (0) + +/* Initialize a vnode_attr to retrieve pre-operation attributes for the NFS server. */ +#define nfsm_srv_pre_vattr_init(VAP) \ + do { \ + VATTR_INIT(VAP); \ + VATTR_WANTED((VAP), va_data_size); \ + VATTR_WANTED((VAP), va_modify_time); \ + VATTR_WANTED((VAP), va_change_time); \ + } while (0) + +/* round up to a multiple of 4 */ +#define nfsm_rndup(a) (((a)+3)&(~0x3)) + +#define nfsm_pad(a) (nfsm_rndup(a) - (a)) + +/* + * control flow macros: + * go to the appropriate label on condition + */ +#define nfsmout_if(E) do { if (E) goto nfsmout; } while (0) +#define nfsmerr_if(E) do { if (E) goto nfsmerr; } while (0) /* - * These macros do strange and peculiar things to mbuf chains for - * the assistance of the nfs code. To attempt to use them for any - * other purpose will be dangerous. (they make weird assumptions) + * For NFS v2 errors and EBADRPC, the reply contains only the error. + * This macro is used to skip any reply building code and go straight + * to nfsmout instead. */ +#define nfsmout_on_status(ND, E) \ + do { \ + if (((ND)->nd_repstat == EBADRPC) || \ + ((ND)->nd_repstat && ((ND)->nd_vers == NFS_VER2))) { \ + (E) = 0; \ + goto nfsmout; \ + } \ + } while (0) + +/* initialize an mbuf chain */ +#define nfsm_chain_null(NMC) \ + do { \ + (NMC)->nmc_mhead = (NMC)->nmc_mcur = NULL; \ + (NMC)->nmc_ptr = NULL; \ + } while (0) + +/* cleanup an mbuf chain */ +#define nfsm_chain_cleanup(NMC) \ + do { \ + if (!(NMC)->nmc_mhead) break; \ + mbuf_freem((NMC)->nmc_mhead); \ + nfsm_chain_null(NMC); \ + } while (0) + +/* get an mbuf given a size hint */ +#define nfsm_mbuf_get(E, MBP, SIZEHINT) \ + do { \ + *(MBP) = NULL; \ + if ((size_t)(SIZEHINT) >= nfs_mbuf_minclsize) \ + (E) = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, (MBP)); \ + else \ + (E) = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, (MBP)); \ + } while (0) + /* - * First define what the actual subs. return + * macros for building NFS mbuf chains */ -struct mbuf *nfsm_reqh __P((struct vnode *vp, u_long procid, int hsiz, - caddr_t *bposp)); -struct mbuf *nfsm_rpchead __P((struct ucred *cr, int nmflag, int procid, - int auth_type, int auth_len, char *auth_str, - int verf_len, char *verf_str, - struct mbuf *mrest, int mrest_len, - struct mbuf **mbp, u_long *xidp)); - -#define M_HASCL(m) ((m)->m_flags & M_EXT) -#define NFSMINOFF(m) \ - if (M_HASCL(m)) \ - (m)->m_data = (m)->m_ext.ext_buf; \ - else if ((m)->m_flags & M_PKTHDR) \ - (m)->m_data = (m)->m_pktdat; \ - else \ - (m)->m_data = (m)->m_dat -#define NFSMADV(m, s) (m)->m_data += (s) -#define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \ - (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN)) + +/* prepare an mbuf chain for building starting with the given mbuf */ +#define nfsm_chain_init(NMC, MB) \ + do { \ + (NMC)->nmc_mhead = (MB); \ + (NMC)->nmc_mcur = (NMC)->nmc_mhead; \ + (NMC)->nmc_ptr = mbuf_data((NMC)->nmc_mcur); \ + (NMC)->nmc_left = mbuf_trailingspace((NMC)->nmc_mcur); \ + (NMC)->nmc_flags = 0; \ + } while (0) + +/* prepare an mbuf chain for building starting with a newly allocated mbuf */ +#define nfsm_chain_build_alloc_init(E, NMC, SIZEHINT) \ + do { \ + mbuf_t ncbimb; \ + nfsm_mbuf_get((E), &ncbimb, (SIZEHINT)); \ + if (E) break; \ + nfsm_chain_init((NMC), ncbimb); \ + } while (0) + +/* done building an mbuf chain */ +#define nfsm_chain_build_done(E, NMC) \ + do { \ + if ((E) || !(NMC)->nmc_mcur) break; \ + /* cap off current mbuf */ \ + mbuf_setlen((NMC)->nmc_mcur, \ + (NMC)->nmc_ptr - (caddr_t)mbuf_data((NMC)->nmc_mcur)); \ + } while (0) /* - * Now for the macros that do the simple stuff and call the functions - * for the hard stuff. - * These macros use several vars. declared in nfsm_reqhead and these - * vars. must not be used elsewhere unless you are careful not to corrupt - * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries - * that may be used so long as the value is not expected to retained - * after a macro. - * I know, this is kind of dorkey, but it makes the actual op functions - * fairly clean and deals with the mess caused by the xdr discriminating - * unions. + * set the TCP record mark at the head of an mbuf chain - + * assumes 4 bytes are already allocated in the head mbuf */ +#define nfsm_chain_set_recmark(E, NMC, VAL) \ + do { \ + if (E) break; \ + *((uint32_t*)mbuf_data((NMC)->nmc_mhead)) \ + = txdr_unsigned(VAL); \ + } while (0) + +/* make sure there's room for size bytes in current mbuf */ +#define nfsm_chain_check_size(E, NMC, SIZE) \ + do { \ + if (E) break; \ + if ((NMC)->nmc_left < (SIZE)) { \ + (E) = nfsm_chain_new_mbuf((NMC), (SIZE)); \ + if (!(E) && ((NMC)->nmc_left < (SIZE))) \ + (E) = ENOMEM; \ + } \ + } while (0) + +/* add a 32bit value to an mbuf chain extending if necessary */ +#define nfsm_chain_add_32(E, NMC, VAL) \ + do { \ + nfsm_chain_check_size((E), (NMC), NFSX_UNSIGNED); \ + if (E) break; \ + *((uint32_t*)(NMC)->nmc_ptr) = txdr_unsigned(VAL); \ + (NMC)->nmc_ptr += NFSX_UNSIGNED; \ + (NMC)->nmc_left -= NFSX_UNSIGNED; \ + } while (0) + +/* add a 64bit value to an mbuf chain */ +#define nfsm_chain_add_64(E, NMC, VAL) \ + do { \ + uint64_t __tmp64; \ + nfsm_chain_check_size((E), (NMC), 2 * NFSX_UNSIGNED); \ + if (E) break; \ + __tmp64 = (VAL); \ + txdr_hyper(&__tmp64, (NMC)->nmc_ptr); \ + (NMC)->nmc_ptr += 2 * NFSX_UNSIGNED; \ + (NMC)->nmc_left -= 2 * NFSX_UNSIGNED; \ + } while (0) + +/* zero the last 4 bytes for a range of opaque */ +/* data to make sure any pad bytes will be zero. */ +#define nfsm_chain_zero_opaque_pad(BUF, LEN) \ + do { \ + if ((LEN) > 0) \ + *(((uint32_t*)(BUF))+((nfsm_rndup(LEN)>>2)-1)) = 0; \ + } while (0) + +/* add buffer of opaque data to an mbuf chain */ +#define nfsm_chain_add_opaque(E, NMC, BUF, LEN) \ + do { \ + uint32_t rndlen = nfsm_rndup(LEN); \ + if (E) break; \ + if ((NMC)->nmc_left < rndlen) { \ + (E) = nfsm_chain_add_opaque_f((NMC), (const u_char*)(BUF), (LEN)); \ + break; \ + } \ + nfsm_chain_zero_opaque_pad((NMC)->nmc_ptr, (LEN)); \ + bcopy((BUF), (NMC)->nmc_ptr, (LEN)); \ + (NMC)->nmc_ptr += rndlen; \ + (NMC)->nmc_left -= rndlen; \ + } while (0) + +/* add buffer of opaque data to an mbuf chain without padding */ +#define nfsm_chain_add_opaque_nopad(E, NMC, BUF, LEN) \ + do { \ + if (E) break; \ + if ((NMC)->nmc_left < (uint32_t) (LEN)) { \ + (E) = nfsm_chain_add_opaque_nopad_f((NMC), (const u_char*)(BUF), (LEN)); \ + break; \ + } \ + bcopy((BUF), (NMC)->nmc_ptr, (LEN)); \ + (NMC)->nmc_ptr += (LEN); \ + (NMC)->nmc_left -= (LEN); \ + } while (0) + +/* finish an mbuf in a chain to allow subsequent insertion */ +#define nfsm_chain_finish_mbuf(E, NMC) \ + do { \ + if (E) break; \ + mbuf_setlen((NMC)->nmc_mcur, \ + (NMC)->nmc_ptr - (caddr_t)mbuf_data((NMC)->nmc_mcur)); \ + (NMC)->nmc_left = 0; \ + } while (0) + +/* add a file handle to an mbuf chain */ +#define nfsm_chain_add_fh(E, NMC, VERS, FHP, FHLEN) \ + do { \ + if (E) break; \ + if ((VERS) != NFS_VER2) \ + nfsm_chain_add_32((E), (NMC), (FHLEN)); \ + nfsm_chain_add_opaque((E), (NMC), (FHP), (FHLEN)); \ + } while (0) + +/* add a string to an mbuf chain */ +#define nfsm_chain_add_string(E, NMC, STR, LEN) \ + do { \ + nfsm_chain_add_32((E), (NMC), (LEN)); \ + nfsm_chain_add_opaque((E), (NMC), (STR), (LEN)); \ + } while (0) + +/* add a name to an mbuf chain */ +#define nfsm_chain_add_name(E, NMC, STR, LEN, NMP) \ + do { \ + if (E) break; \ + if (NMFLAG((NMP), NFC)) \ + (E) = nfsm_chain_add_string_nfc((NMC), (const uint8_t*)(STR), (LEN)); \ + else \ + nfsm_chain_add_string((E), (NMC), (STR), (LEN)); \ + } while (0) + +/* add an NFSv2 time to an mbuf chain */ +#define nfsm_chain_add_v2time(E, NMC, TVP) \ + do { \ + if (TVP) { \ + nfsm_chain_add_32((E), (NMC), (TVP)->tv_sec); \ + nfsm_chain_add_32((E), (NMC), ((TVP)->tv_nsec != -1) ? \ + ((uint32_t)(TVP)->tv_nsec / 1000) : 0xffffffff); \ + } else { \ + /* no time... use -1 */ \ + nfsm_chain_add_32((E), (NMC), -1); \ + nfsm_chain_add_32((E), (NMC), -1); \ + } \ + } while (0) + +/* add an NFSv3 time to an mbuf chain */ +#define nfsm_chain_add_v3time(E, NMC, TVP) \ + do { \ + nfsm_chain_add_32((E), (NMC), (TVP)->tv_sec); \ + nfsm_chain_add_32((E), (NMC), (TVP)->tv_nsec); \ + } while (0) + +/* add an NFS v2 or v3 time to an mbuf chain */ +#define nfsm_chain_add_time(E, NMC, VERS, TVP) \ + do { \ + if ((VERS) == NFS_VER2) { \ + nfsm_chain_add_v2time((E), (NMC), (TVP)); \ + } else { \ + nfsm_chain_add_v3time((E), (NMC), (TVP)); \ + } \ + } while (0) + +/* add an NFSv3 postop file handle to an mbuf chain */ +#define nfsm_chain_add_postop_fh(E, NMC, FHP, FHLEN) \ + do { \ + nfsm_chain_add_32((E), (NMC), TRUE); \ + nfsm_chain_add_fh((E), (NMC), NFS_VER3, (FHP), (FHLEN)); \ + } while (0) + +/* add NFSv3 postop attributes to an mbuf chain */ +#define nfsm_chain_add_postop_attr(E, ND, NMC, ATTRERR, VAP) \ + do { \ + if (E) break; \ + if (ATTRERR) { \ + nfsm_chain_add_32((E), (NMC), FALSE); \ + break; \ + } \ + nfsm_chain_add_32((E), (NMC), TRUE); \ + if (E) break; \ + (E) = nfsm_chain_add_fattr((ND), (NMC), (VAP)); \ + } while (0) + +/* Add an NFSv2 "sattr" structure to an mbuf chain */ +#define nfsm_chain_add_v2sattr(E, NMC, VAP, SZRDEV) \ + do { \ + if (E) break; \ + (E) = nfsm_chain_add_v2sattr_f((NMC), (VAP), (SZRDEV)); \ + } while (0) + +/* Add an NFSv3 "sattr" structure to an mbuf chain */ +#define nfsm_chain_add_v3sattr(NMP, E, NMC, VAP) \ + do { \ + if (E) break; \ + (E) = nfsm_chain_add_v3sattr_f((NMP), (NMC), (VAP)); \ + } while (0) + +/* Add an NFSv4 "fattr" structure to an mbuf chain */ +#define nfsm_chain_add_fattr4(E, NMC, VAP, NMP) \ + do { \ + if (E) break; \ + (E) = nfsm_chain_add_fattr4_f((NMC), (VAP), (NMP)); \ + } while (0) + +/* add NFSv3 WCC data to an mbuf chain */ +#define nfsm_chain_add_wcc_data(E, ND, NMC, PREERR, PREVAP, POSTERR, POSTVAP) \ + do { \ + if (E) break; \ + (E) = nfsm_chain_add_wcc_data_f((ND), (NMC), \ + (PREERR), (PREVAP), (POSTERR), (POSTVAP)); \ + } while (0) + +/* add NFSv4 COMPOUND header */ +#define NFS4_TAG_LENGTH 12 +#define nfsm_chain_add_compound_header(E, NMC, TAG, MINOR, NUMOPS) \ + do { \ + if ((TAG) && strlen(TAG)) { \ + /* put tags into a fixed-length space-padded field */ \ + char __nfstag[NFS4_TAG_LENGTH+1]; \ + snprintf(__nfstag, sizeof(__nfstag), "%-*s", NFS4_TAG_LENGTH, (TAG)); \ + nfsm_chain_add_32((E), (NMC), NFS4_TAG_LENGTH); \ + nfsm_chain_add_opaque((E), (NMC), __nfstag, NFS4_TAG_LENGTH); \ + } else { \ + nfsm_chain_add_32((E), (NMC), 0); \ + } \ + nfsm_chain_add_32((E), (NMC), (MINOR)); /*minorversion*/ \ + nfsm_chain_add_32((E), (NMC), (NUMOPS)); \ + } while (0) + +/* add NFSv4 attr bitmap */ +#define nfsm_chain_add_bitmap(E, NMC, B, LEN) \ + do { \ + int __i; \ + nfsm_chain_add_32((E), (NMC), (LEN)); \ + for (__i=0; __i < (LEN); __i++) \ + nfsm_chain_add_32((E), (NMC), (B)[__i]); \ + } while (0) + +/* add NFSv4 attr bitmap masked with the given mask */ +#define nfsm_chain_add_bitmap_masked(E, NMC, B, LEN, MASK) \ + do { \ + int __i; \ + nfsm_chain_add_32((E), (NMC), (LEN)); \ + for (__i=0; __i < (LEN); __i++) \ + nfsm_chain_add_32((E), (NMC), ((B)[__i] & (MASK)[__i])); \ + } while (0) + +/* add NFSv4 attr bitmap masked with the supported attributes for this mount/node */ +#define nfsm_chain_add_bitmap_supported(E, NMC, B, NMP, NP) \ + do { \ + uint32_t __bitmap[NFS_ATTR_BITMAP_LEN], *__bmp = (B); \ + int __nonamedattr = 0, __noacl = 0, __nomode = 0; \ + if (!((NMP)->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR) || \ + ((NP) && (((nfsnode_t)(NP))->n_flag & (NISDOTZFS|NISDOTZFSCHILD)))) \ + __nonamedattr = 1; \ + if (!((NMP)->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL)) \ + __noacl = 1; \ + if (NMFLAG((NMP), ACLONLY)) \ + __nomode = 1; \ + if (__nonamedattr || __noacl || __nomode) { \ + /* don't ask for attrs we're not supporting */ \ + /* some ".zfs" directories can't handle being asked for some attributes */ \ + int __ii; \ + NFS_CLEAR_ATTRIBUTES(__bitmap); \ + for (__ii=0; __ii < NFS_ATTR_BITMAP_LEN; __ii++) \ + __bitmap[__ii] = (B)[__ii]; \ + if (__nonamedattr) \ + NFS_BITMAP_CLR(__bitmap, NFS_FATTR_NAMED_ATTR); \ + if (__noacl) \ + NFS_BITMAP_CLR(__bitmap, NFS_FATTR_ACL); \ + if (__nomode) \ + NFS_BITMAP_CLR(__bitmap, NFS_FATTR_MODE); \ + __bmp = __bitmap; \ + } \ + nfsm_chain_add_bitmap_masked((E), (NMC), __bmp, NFS_ATTR_BITMAP_LEN, (NMP)->nm_fsattr.nfsa_supp_attr); \ + } while (0) + +/* Add an NFSv4 "stateid" structure to an mbuf chain */ +#define nfsm_chain_add_stateid(E, NMC, SID) \ + do { \ + nfsm_chain_add_32((E), (NMC), (SID)->seqid); \ + nfsm_chain_add_32((E), (NMC), (SID)->other[0]); \ + nfsm_chain_add_32((E), (NMC), (SID)->other[1]); \ + nfsm_chain_add_32((E), (NMC), (SID)->other[2]); \ + } while (0) + +/* add an NFSv4 lock owner structure to an mbuf chain */ +#define nfsm_chain_add_lock_owner4(E, NMC, NMP, NLOP) \ + do { \ + nfsm_chain_add_64((E), (NMC), (NMP)->nm_clientid); \ + nfsm_chain_add_32((E), (NMC), 5*NFSX_UNSIGNED); \ + nfsm_chain_add_32((E), (NMC), (NLOP)->nlo_name); \ + nfsm_chain_add_32((E), (NMC), (NLOP)->nlo_pid); \ + nfsm_chain_add_64((E), (NMC), (NLOP)->nlo_pid_start.tv_sec); \ + nfsm_chain_add_32((E), (NMC), (NLOP)->nlo_pid_start.tv_usec); \ + } while (0) -#define nfsm_build(a,c,s) \ - { if ((s) > M_TRAILINGSPACE(mb)) { \ - MGET(mb2, M_WAIT, MT_DATA); \ - if ((s) > MLEN) \ - panic("build > MLEN"); \ - mb->m_next = mb2; \ - mb = mb2; \ - mb->m_len = 0; \ - bpos = mtod(mb, caddr_t); \ - } \ - (a) = (c)(bpos); \ - mb->m_len += (s); \ - bpos += (s); } - -#define nfsm_dissect(a, c, s) \ - { t1 = mtod(md, caddr_t)+md->m_len-dpos; \ - if (t1 >= (s)) { \ - (a) = (c)(dpos); \ - dpos += (s); \ - } else if ((t1 = nfsm_disct(&md, &dpos, (s), t1, &cp2))) { \ - error = t1; \ - m_freem(mrep); \ - goto nfsmout; \ - } else { \ - (a) = (c)cp2; \ - } } - -#define nfsm_fhtom(v, v3) \ - { if (v3) { \ - t2 = nfsm_rndup(VTONFS(v)->n_fhsize) + NFSX_UNSIGNED; \ - if (t2 <= M_TRAILINGSPACE(mb)) { \ - nfsm_build(tl, u_long *, t2); \ - *tl++ = txdr_unsigned(VTONFS(v)->n_fhsize); \ - *(tl + ((t2>>2) - 2)) = 0; \ - bcopy((caddr_t)VTONFS(v)->n_fhp,(caddr_t)tl, \ - VTONFS(v)->n_fhsize); \ - } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, \ - (caddr_t)VTONFS(v)->n_fhp, VTONFS(v)->n_fhsize))) { \ - error = t2; \ - m_freem(mreq); \ - goto nfsmout; \ - } \ - } else { \ - nfsm_build(cp, caddr_t, NFSX_V2FH); \ - bcopy((caddr_t)VTONFS(v)->n_fhp, cp, NFSX_V2FH); \ - } } - -#define nfsm_srvfhtom(f, v3) \ - { if (v3) { \ - nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FH); \ - *tl++ = txdr_unsigned(NFSX_V3FH); \ - bcopy((caddr_t)(f), (caddr_t)tl, NFSX_V3FH); \ - } else { \ - nfsm_build(cp, caddr_t, NFSX_V2FH); \ - bcopy((caddr_t)(f), cp, NFSX_V2FH); \ - } } - -#define nfsm_srvpostop_fh(f) \ - { nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED + NFSX_V3FH); \ - *tl++ = nfs_true; \ - *tl++ = txdr_unsigned(NFSX_V3FH); \ - bcopy((caddr_t)(f), (caddr_t)tl, NFSX_V3FH); \ - } - -#define nfsm_mtofh(d, v, v3, f) \ - { struct nfsnode *ttnp; nfsfh_t *ttfhp; int ttfhsize; \ - if (v3) { \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - (f) = fxdr_unsigned(int, *tl); \ - } else \ - (f) = 1; \ - if (f) { \ - nfsm_getfh(ttfhp, ttfhsize, (v3)); \ - if ((t1 = nfs_nget((d)->v_mount, ttfhp, ttfhsize, \ - &ttnp))) { \ - error = t1; \ - m_freem(mrep); \ - goto nfsmout; \ - } \ - (v) = NFSTOV(ttnp); \ - } \ - if (v3) { \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (f) \ - (f) = fxdr_unsigned(int, *tl); \ - else if (fxdr_unsigned(int, *tl)) \ - nfsm_adv(NFSX_V3FATTR); \ - } \ - if (f) \ - nfsm_loadattr((v), (struct vattr *)0); \ - } - -#define nfsm_getfh(f, s, v3) \ - { if (v3) { \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (((s) = fxdr_unsigned(int, *tl)) <= 0 || \ - (s) > NFSX_V3FHMAX) { \ - m_freem(mrep); \ - error = EBADRPC; \ - goto nfsmout; \ - } \ - } else \ - (s) = NFSX_V2FH; \ - nfsm_dissect((f), nfsfh_t *, nfsm_rndup(s)); } - -#define nfsm_loadattr(v, a) \ - { struct vnode *ttvp = (v); \ - if ((t1 = nfs_loadattrcache(&ttvp, &md, &dpos, (a)))) { \ - error = t1; \ - m_freem(mrep); \ - goto nfsmout; \ - } \ - (v) = ttvp; } - -#define nfsm_postop_attr(v, f) \ - { struct vnode *ttvp = (v); \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (((f) = fxdr_unsigned(int, *tl))) { \ - if ((t1 = nfs_loadattrcache(&ttvp, &md, &dpos, \ - (struct vattr *)0))) { \ - error = t1; \ - (f) = 0; \ - m_freem(mrep); \ - goto nfsmout; \ - } \ - (v) = ttvp; \ - } } - -/* Used as (f) for nfsm_wcc_data() */ -#define NFSV3_WCCRATTR 0 -#define NFSV3_WCCCHK 1 - -#define nfsm_wcc_data(v, f) \ - { int ttattrf, ttretf = 0; \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (*tl == nfs_true) { \ - nfsm_dissect(tl, u_long *, 6 * NFSX_UNSIGNED); \ - if (f) \ - ttretf = (VTONFS(v)->n_mtime == \ - fxdr_unsigned(u_long, *(tl + 2))); \ - } \ - nfsm_postop_attr((v), ttattrf); \ - if (f) { \ - (f) = ttretf; \ - } else { \ - (f) = ttattrf; \ - } } - -#define nfsm_v3sattr(s, a, u, g) \ - { (s)->sa_modetrue = nfs_true; \ - (s)->sa_mode = vtonfsv3_mode((a)->va_mode); \ - (s)->sa_uidtrue = nfs_true; \ - (s)->sa_uid = txdr_unsigned(u); \ - (s)->sa_gidtrue = nfs_true; \ - (s)->sa_gid = txdr_unsigned(g); \ - (s)->sa_sizefalse = nfs_false; \ - (s)->sa_atimetype = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); \ - (s)->sa_mtimetype = txdr_unsigned(NFSV3SATTRTIME_TOSERVER); \ - } - -#define nfsm_strsiz(s,m) \ - { nfsm_dissect(tl,u_long *,NFSX_UNSIGNED); \ - if (((s) = fxdr_unsigned(long,*tl)) > (m)) { \ - m_freem(mrep); \ - error = EBADRPC; \ - goto nfsmout; \ - } } - -#define nfsm_srvstrsiz(s,m) \ - { nfsm_dissect(tl,u_long *,NFSX_UNSIGNED); \ - if (((s) = fxdr_unsigned(long,*tl)) > (m) || (s) <= 0) { \ - error = EBADRPC; \ - nfsm_reply(0); \ - } } - -#define nfsm_srvnamesiz(s) \ - { nfsm_dissect(tl,u_long *,NFSX_UNSIGNED); \ - if (((s) = fxdr_unsigned(long,*tl)) > NFS_MAXNAMLEN) \ - error = NFSERR_NAMETOL; \ - if ((s) <= 0) \ - error = EBADRPC; \ - if (error) \ - nfsm_reply(0); \ - } - -#define nfsm_mtouio(p,s) \ - if ((s) > 0 && \ - (t1 = nfsm_mbuftouio(&md,(p),(s),&dpos))) { \ - error = t1; \ - m_freem(mrep); \ - goto nfsmout; \ - } - -#define nfsm_uiotom(p,s) \ - if ((t1 = nfsm_uiotombuf((p),&mb,(s),&bpos))) { \ - error = t1; \ - m_freem(mreq); \ - goto nfsmout; \ - } - -#define nfsm_reqhead(v,a,s) \ - mb = mreq = nfsm_reqh((v),(a),(s),&bpos) - -#define nfsm_reqdone m_freem(mrep); \ - nfsmout: - -#define nfsm_rndup(a) (((a)+3)&(~0x3)) - -/* -* We seem to see cases mainly on shutdown where the vnode got recycled -* on use while waiting on server. Maybe nfs vnode locking will help if -* we implement that, but for now, check for bad vnodes and return an -* error. This call spot should catch most of them. Note that NFSv2 -* just goes to nfsmout here, while nfsV3 goes back to caller's next -* line for post-processing. It will do a nfsm_reqdone also making -* m_freem(mrep). Wondering if some of our freeing problems could be -* due to nfsv3 calling nfsm_reqdone unlike nfsv2. Separate problem. -*/ -#define nfsm_request(v, t, p, c) \ - { \ - int nfsv3 = (VFSTONFS((v)->v_mount))->nm_flag & NFSMNT_NFSV3; \ - if ((error = nfs_request((v), mreq, (t), (p), \ - (c), &mrep, &md, &dpos))) { \ - if (error & NFSERR_RETERR) \ - error &= ~NFSERR_RETERR; \ - else \ - goto nfsmout; \ - } \ - else if ((v)->v_type==VBAD) { \ - error = EINVAL; \ - if (!nfsv3) \ - goto nfsmout; \ - } \ - } - -#define nfsm_strtom(a,s,m) \ - if ((s) > (m)) { \ - m_freem(mreq); \ - error = ENAMETOOLONG; \ - goto nfsmout; \ - } \ - t2 = nfsm_rndup(s)+NFSX_UNSIGNED; \ - if (t2 <= M_TRAILINGSPACE(mb)) { \ - nfsm_build(tl,u_long *,t2); \ - *tl++ = txdr_unsigned(s); \ - *(tl+((t2>>2)-2)) = 0; \ - bcopy((caddr_t)(a), (caddr_t)tl, (s)); \ - } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, (a), (s)))) { \ - error = t2; \ - m_freem(mreq); \ - goto nfsmout; \ - } - -#define nfsm_srvdone \ - nfsmout: \ - return(error) - -#define nfsm_reply(s) \ - { \ - nfsd->nd_repstat = error; \ - if (error && !(nfsd->nd_flag & ND_NFSV3)) \ - (void) nfs_rephead(0, nfsd, slp, error, cache, &frev, \ - mrq, &mb, &bpos); \ - else \ - (void) nfs_rephead((s), nfsd, slp, error, cache, &frev, \ - mrq, &mb, &bpos); \ - m_freem(mrep); \ - mreq = *mrq; \ - if (error && (!(nfsd->nd_flag & ND_NFSV3) || \ - error == EBADRPC)) \ - return(0); \ - } - -#define nfsm_writereply(s, v3) \ - { \ - nfsd->nd_repstat = error; \ - if (error && !(v3)) \ - (void) nfs_rephead(0, nfsd, slp, error, cache, &frev, \ - &mreq, &mb, &bpos); \ - else \ - (void) nfs_rephead((s), nfsd, slp, error, cache, &frev, \ - &mreq, &mb, &bpos); \ - } - -#define nfsm_adv(s) \ - { t1 = mtod(md, caddr_t)+md->m_len-dpos; \ - if (t1 >= (s)) { \ - dpos += (s); \ - } else if ((t1 = nfs_adv(&md, &dpos, (s), t1))) { \ - error = t1; \ - m_freem(mrep); \ - goto nfsmout; \ - } } - -#define nfsm_srvmtofh(f) \ - { if (nfsd->nd_flag & ND_NFSV3) { \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (fxdr_unsigned(int, *tl) != NFSX_V3FH) { \ - error = EBADRPC; \ - nfsm_reply(0); \ - } \ - } \ - nfsm_dissect(tl, u_long *, NFSX_V3FH); \ - bcopy((caddr_t)tl, (caddr_t)(f), NFSX_V3FH); \ - if ((nfsd->nd_flag & ND_NFSV3) == 0) \ - nfsm_adv(NFSX_V2FH - NFSX_V3FH); \ - } - -#define nfsm_clget \ - if (bp >= be) { \ - if (mp == mb) \ - mp->m_len += bp-bpos; \ - MGET(mp, M_WAIT, MT_DATA); \ - MCLGET(mp, M_WAIT); \ - mp->m_len = NFSMSIZ(mp); \ - mp2->m_next = mp; \ - mp2 = mp; \ - bp = mtod(mp, caddr_t); \ - be = bp+mp->m_len; \ - } \ - tl = (u_long *)bp - -#define nfsm_srvfillattr(a, f) \ - nfsm_srvfattr(nfsd, (a), (f)) - -#define nfsm_srvwcc_data(br, b, ar, a) \ - nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos) - -#define nfsm_srvpostop_attr(r, a) \ - nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos) - -#define nfsm_srvsattr(a) \ - { nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (*tl == nfs_true) { \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - (a)->va_mode = nfstov_mode(*tl); \ - } \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (*tl == nfs_true) { \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - (a)->va_uid = fxdr_unsigned(uid_t, *tl); \ - } \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (*tl == nfs_true) { \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - (a)->va_gid = fxdr_unsigned(gid_t, *tl); \ - } \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - if (*tl == nfs_true) { \ - nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); \ - fxdr_hyper(tl, &(a)->va_size); \ - } \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - switch (fxdr_unsigned(int, *tl)) { \ - case NFSV3SATTRTIME_TOCLIENT: \ - nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); \ - fxdr_nfsv3time(tl, &(a)->va_atime); \ - break; \ - case NFSV3SATTRTIME_TOSERVER: \ - (a)->va_atime.tv_sec = time.tv_sec; \ - (a)->va_atime.tv_nsec = time.tv_usec * 1000; \ - break; \ - }; \ - nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \ - switch (fxdr_unsigned(int, *tl)) { \ - case NFSV3SATTRTIME_TOCLIENT: \ - nfsm_dissect(tl, u_long *, 2 * NFSX_UNSIGNED); \ - fxdr_nfsv3time(tl, &(a)->va_mtime); \ - break; \ - case NFSV3SATTRTIME_TOSERVER: \ - (a)->va_mtime.tv_sec = time.tv_sec; \ - (a)->va_mtime.tv_nsec = time.tv_usec * 1000; \ - break; \ - }; } +/* + * macros for dissecting NFS mbuf chains + */ +/* prepare an mbuf chain for dissection starting with the given mbuf */ +#define nfsm_chain_dissect_init(E, NMC, H) \ + do { \ + if (!(H)) { \ + (E) = EINVAL; \ + break; \ + } \ + (NMC)->nmc_mcur = (NMC)->nmc_mhead = (H); \ + (NMC)->nmc_ptr = mbuf_data(H); \ + (NMC)->nmc_left = mbuf_len(H); \ + } while (0) + +/* skip a number of bytes in an mbuf chain */ +#define nfsm_chain_adv(E, NMC, LEN) \ + do { \ + if (E) break; \ + if ((NMC)->nmc_left >= (uint32_t)(LEN)) { \ + (NMC)->nmc_left -= (LEN); \ + (NMC)->nmc_ptr += (LEN); \ + } else { \ + (E) = nfsm_chain_advance((NMC), (LEN)); \ + } \ + } while (0) + +/* get a 32bit value from an mbuf chain */ +#define nfsm_chain_get_32(E, NMC, LVAL) \ + do { \ + uint32_t __tmp32, *__tmpptr; \ + if (E) break; \ + if ((NMC)->nmc_left >= NFSX_UNSIGNED) { \ + __tmpptr = (uint32_t*)(NMC)->nmc_ptr; \ + (NMC)->nmc_left -= NFSX_UNSIGNED; \ + (NMC)->nmc_ptr += NFSX_UNSIGNED; \ + } else { \ + __tmpptr = &__tmp32; \ + (E) = nfsm_chain_get_opaque_f((NMC), NFSX_UNSIGNED, (u_char*)__tmpptr); \ + if (E) break; \ + } \ + (LVAL) = fxdr_unsigned(uint32_t, *__tmpptr); \ + } while (0) + +/* get a 64bit value from an mbuf chain */ +#define nfsm_chain_get_64(E, NMC, LVAL) \ + do { \ + uint64_t __tmp64, *__tmpptr; \ + if (E) break; \ + if ((NMC)->nmc_left >= 2 * NFSX_UNSIGNED) { \ + __tmpptr = (uint64_t*)(NMC)->nmc_ptr; \ + (NMC)->nmc_left -= 2 * NFSX_UNSIGNED; \ + (NMC)->nmc_ptr += 2 * NFSX_UNSIGNED; \ + } else { \ + __tmpptr = &__tmp64; \ + (E) = nfsm_chain_get_opaque_f((NMC), 2 * NFSX_UNSIGNED, (u_char*)__tmpptr); \ + if (E) break; \ + } \ + fxdr_hyper(__tmpptr, &(LVAL)); \ + } while (0) + +/* get a pointer to the next consecutive bytes in an mbuf chain */ +#define nfsm_chain_get_opaque_pointer(E, NMC, LEN, PTR) \ + do { \ + uint32_t rndlen; \ + if (E) break; \ + rndlen = nfsm_rndup(LEN); \ + if (rndlen < (LEN)) { \ + (E) = EBADRPC; \ + break; \ + } \ + if ((NMC)->nmc_left >= rndlen) { \ + (PTR) = (void*)(NMC)->nmc_ptr; \ + (NMC)->nmc_left -= rndlen; \ + (NMC)->nmc_ptr += rndlen; \ + } else { \ + (E) = nfsm_chain_get_opaque_pointer_f((NMC), (LEN), (u_char**)&(PTR)); \ + } \ + } while (0) + +/* copy the next consecutive bytes of opaque data from an mbuf chain */ +#define nfsm_chain_get_opaque(E, NMC, LEN, PTR) \ + do { \ + uint32_t rndlen; \ + if (E) break; \ + rndlen = nfsm_rndup(LEN); \ + if (rndlen < (LEN)) { \ + (E) = EBADRPC; \ + break; \ + } \ + if ((NMC)->nmc_left >= rndlen) { \ + u_char *__tmpptr = (u_char*)(NMC)->nmc_ptr; \ + (NMC)->nmc_left -= rndlen; \ + (NMC)->nmc_ptr += rndlen; \ + bcopy(__tmpptr, (PTR), (LEN)); \ + } else { \ + (E) = nfsm_chain_get_opaque_f((NMC), (LEN), (u_char*)(PTR)); \ + } \ + } while (0) + +/* get the size of and a pointer to a file handle in an mbuf chain */ +#define nfsm_chain_get_fh_ptr(E, NMC, VERS, FHP, FHSIZE) \ + do { \ + if ((VERS) != NFS_VER2) { \ + nfsm_chain_get_32((E), (NMC), (FHSIZE)); \ + if (E) break; \ + if ((FHSIZE) > NFS_MAX_FH_SIZE) \ + (E) = EBADRPC; \ + } else \ + (FHSIZE) = NFSX_V2FH;\ + if ((E) == 0) \ + nfsm_chain_get_opaque_pointer((E), (NMC), (FHSIZE), (FHP));\ + } while (0) + +/* get the size of and data for a file handle in an mbuf chain */ +#define nfsm_chain_get_fh(E, NMC, VERS, FHP) \ + do { \ + if ((VERS) != NFS_VER2) { \ + nfsm_chain_get_32((E), (NMC), (FHP)->fh_len); \ + if ((FHP)->fh_len > sizeof((FHP)->fh_data)) \ + (E) = EBADRPC; \ + } else \ + (FHP)->fh_len = NFSX_V2FH;\ + if ((E) == 0) \ + nfsm_chain_get_opaque((E), (NMC), (uint32_t)(FHP)->fh_len, (FHP)->fh_data);\ + else \ + (FHP)->fh_len = 0;\ + } while (0) + +/* get an NFS v2 or v3 time from an mbuf chain */ +#define nfsm_chain_get_time(E, NMC, VERS, TSEC, TNSEC) \ + do { \ + nfsm_chain_get_32((E), (NMC), (TSEC)); \ + nfsm_chain_get_32((E), (NMC), (TNSEC)); \ + if ((E) || ((VERS) != NFS_VER2)) break; \ + if ((uint32_t)(TNSEC) == 0xffffffff) \ + (TNSEC) = 0; \ + else \ + (TNSEC) *= 1000; \ + } while (0) + +/* get postop attributes from an mbuf chain */ +#define nfsm_chain_postop_attr_get(NMP, E, NMC, F, VAP) \ + do { \ + (F) = 0; \ + if ((E) || !(NMC)->nmc_mhead) break; \ + nfsm_chain_get_32((E), (NMC), (F)); \ + if ((E) || !(F)) break; \ + if (((E) = nfs_parsefattr((NMP), (NMC), NFS_VER3, (VAP)))) \ + (F) = 0; \ + } while (0) + +/* update a node's attribute cache with postop attributes from an mbuf chain */ +/* (F returns whether the attributes were updated or not) */ +#define nfsm_chain_postop_attr_update_flag(E, NMC, NP, F, X) \ + do { \ + struct nfs_vattr ttvattr; \ + nfsm_chain_postop_attr_get(NFSTONMP(NP), (E), (NMC), (F), &ttvattr); \ + if ((E) || !(F)) break; \ + if (((E) = nfs_loadattrcache((NP), &ttvattr, (X), 1))) { \ + (F) = 0; \ + break; \ + } \ + if (*(X) == 0) \ + (F) = 0; \ + } while (0) + +/* update a node's attribute cache with postop attributes from an mbuf chain */ +#define nfsm_chain_postop_attr_update(E, NMC, NP, X) \ + do { \ + int __dummy_flag = 0; \ + nfsm_chain_postop_attr_update_flag((E), (NMC), (NP), __dummy_flag, (X)); \ + } while (0) + +/* get and process NFSv3 WCC data from an mbuf chain */ +#define nfsm_chain_get_wcc_data(E, NMC, NP, PREMTIME, NEWPOSTATTR, X) \ + do { \ + if (E) break; \ + (E) = nfsm_chain_get_wcc_data_f((NMC), (NP), (PREMTIME), (NEWPOSTATTR), (X)); \ + } while (0) + +#if CONFIG_NFS4 +/* separate v4 variant for loading attrs that only runs when NFSv4 is set */ +#define __nfsm_chain_loadattr_v4(E, NMC, VERS, X, VATTR) \ + do { \ + (E) = nfs4_parsefattr((NMC), NULL, (VATTR), NULL, NULL, NULL); \ + } while (0) +#else +#define __nfsm_chain_loadattr_v4(E, NMC, VERS, X, VATTR) \ + do { \ + break; \ + } while (0) #endif + +/* update a node's attribute cache with attributes from an mbuf chain */ +#define nfsm_chain_loadattr(E, NMC, NP, VERS, X) \ + do { \ + struct nfs_vattr ttvattr; \ + if (E) break; \ + if ((VERS) == NFS_VER4) { \ + __nfsm_chain_loadattr_v4((E), (NMC), (VERS), (X), &ttvattr); \ + } else { \ + (E) = nfs_parsefattr(NFSTONMP(NP), (NMC), (VERS), &ttvattr); \ + } \ + if (!(E) && (NP)) \ + (E) = nfs_loadattrcache((NP), &ttvattr, (X), 0); \ + NVATTR_CLEANUP(&ttvattr); \ + } while (0) + +/* get NFSv4 attr bitmap */ +#define nfsm_chain_get_bitmap(E, NMC, B, LEN) \ + do { \ + uint32_t __len = 0, __i; \ + nfsm_chain_get_32((E), (NMC), __len); \ + if (E) break; \ + for (__i=0; __i < MIN(__len, (LEN)); __i++) \ + nfsm_chain_get_32((E), (NMC), (B)[__i]); \ + if (E) break; \ + for (; __i < __len; __i++) \ + nfsm_chain_adv((E), (NMC), NFSX_UNSIGNED); \ + for (; __i < (LEN); __i++) \ + (B)[__i] = 0; \ + (LEN) = __len; \ + } while (0) + +/* get an NFSv4 "stateid" structure from an mbuf chain */ +#define nfsm_chain_get_stateid(E, NMC, SID) \ + do { \ + nfsm_chain_get_32((E), (NMC), (SID)->seqid); \ + nfsm_chain_get_32((E), (NMC), (SID)->other[0]); \ + nfsm_chain_get_32((E), (NMC), (SID)->other[1]); \ + nfsm_chain_get_32((E), (NMC), (SID)->other[2]); \ + } while (0) + +#define nfsm_chain_skip_tag(E, NMC) \ + do { \ + uint32_t __val = 0; \ + nfsm_chain_get_32((E), (NMC), __val); \ + nfsm_chain_adv((E), (NMC), nfsm_rndup(__val)); \ + } while (0) + +#define nfsm_chain_op_check(E, NMC, OP) \ + do { \ + uint32_t __val = 0; \ + nfsm_chain_get_32((E), (NMC), __val); \ + /* [sigh] some implementations return the "illegal" op for unsupported ops */ \ + nfsm_assert((E), ((__val == (OP)) || (__val == NFS_OP_ILLEGAL)), EBADRPC); \ + nfsm_chain_get_32((E), (NMC), __val); \ + nfsm_assert((E), (__val == NFS_OK), __val); \ + } while (0) + +#define nfsm_chain_check_change_info(E, NMC, DNP) \ + do { \ + uint64_t __ci_before, __ci_after; \ + uint32_t __ci_atomic = 0; \ + nfsm_chain_get_32((E), (NMC), __ci_atomic); \ + nfsm_chain_get_64((E), (NMC), __ci_before); \ + nfsm_chain_get_64((E), (NMC), __ci_after); \ + if ((E) || !(DNP)) break; \ + if (__ci_atomic && (__ci_before == (DNP)->n_ncchange)) { \ + (DNP)->n_ncchange = __ci_after; \ + } else { \ + cache_purge(NFSTOV(DNP)); \ + (DNP)->n_ncgen++; \ + } \ + } while (0) + +#endif /* __APPLE_API_PRIVATE */ +#endif /* _NFS_NFSM_SUBS_H_ */