275 lines
8.4 KiB
C
275 lines
8.4 KiB
C
/*
|
|
* Copyright (c) 1989, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Rick Macklem at The University of Guelph.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)nfsm_subs.h 8.1 (Berkeley) 6/16/93
|
|
* $Id: nfsm_subs.h,v 1.2 1994/08/02 07:52:20 davidg Exp $
|
|
*/
|
|
|
|
#ifndef _NFS_NFSM_SUBS_H_
|
|
#define _NFS_NFSM_SUBS_H_
|
|
|
|
/*
|
|
* 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)
|
|
*/
|
|
|
|
/*
|
|
* First define what the actual subs. return
|
|
*/
|
|
extern struct mbuf *nfsm_reqh();
|
|
|
|
#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))
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
#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 (error = nfsm_disct(&md, &dpos, (s), t1, &cp2)) { \
|
|
m_freem(mrep); \
|
|
goto nfsmout; \
|
|
} else { \
|
|
(a) = (c)cp2; \
|
|
} }
|
|
|
|
#define nfsm_fhtom(v) \
|
|
nfsm_build(cp,caddr_t,NFSX_FH); \
|
|
bcopy((caddr_t)&(VTONFS(v)->n_fh), cp, NFSX_FH)
|
|
|
|
#define nfsm_srvfhtom(f) \
|
|
nfsm_build(cp,caddr_t,NFSX_FH); \
|
|
bcopy((caddr_t)(f), cp, NFSX_FH)
|
|
|
|
#define nfsm_mtofh(d,v) \
|
|
{ struct nfsnode *np; nfsv2fh_t *fhp; \
|
|
nfsm_dissect(fhp,nfsv2fh_t *,NFSX_FH); \
|
|
if (error = nfs_nget((d)->v_mount, fhp, &np)) { \
|
|
m_freem(mrep); \
|
|
goto nfsmout; \
|
|
} \
|
|
(v) = NFSTOV(np); \
|
|
nfsm_loadattr(v, (struct vattr *)0); \
|
|
}
|
|
|
|
#define nfsm_loadattr(v,a) \
|
|
{ struct vnode *tvp = (v); \
|
|
if (error = nfs_loadattrcache(&tvp, &md, &dpos, (a))) { \
|
|
m_freem(mrep); \
|
|
goto nfsmout; \
|
|
} \
|
|
(v) = tvp; }
|
|
|
|
#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_mtouio(p,s) \
|
|
if ((s) > 0 && \
|
|
(error = nfsm_mbuftouio(&md,(p),(s),&dpos))) { \
|
|
m_freem(mrep); \
|
|
goto nfsmout; \
|
|
}
|
|
|
|
#define nfsm_uiotom(p,s) \
|
|
if (error = nfsm_uiotombuf((p),&mb,(s),&bpos)) { \
|
|
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))
|
|
|
|
#define nfsm_request(v, t, p, c) \
|
|
if (error = nfs_request((v), mreq, (t), (p), \
|
|
(c), &mrep, &md, &dpos)) \
|
|
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 (error = nfsm_strtmbuf(&mb, &bpos, (a), (s))) { \
|
|
m_freem(mreq); \
|
|
goto nfsmout; \
|
|
}
|
|
|
|
#define nfsm_srvdone \
|
|
nfsmout: \
|
|
return(error)
|
|
|
|
#define nfsm_reply(s) \
|
|
{ \
|
|
nfsd->nd_repstat = error; \
|
|
if (error) \
|
|
(void) nfs_rephead(0, nfsd, error, cache, &frev, \
|
|
mrq, &mb, &bpos); \
|
|
else \
|
|
(void) nfs_rephead((s), nfsd, error, cache, &frev, \
|
|
mrq, &mb, &bpos); \
|
|
m_freem(mrep); \
|
|
mreq = *mrq; \
|
|
if (error) \
|
|
return(0); \
|
|
}
|
|
|
|
#define nfsm_adv(s) \
|
|
t1 = mtod(md, caddr_t)+md->m_len-dpos; \
|
|
if (t1 >= (s)) { \
|
|
dpos += (s); \
|
|
} else if (error = nfs_adv(&md, &dpos, (s), t1)) { \
|
|
m_freem(mrep); \
|
|
goto nfsmout; \
|
|
}
|
|
|
|
#define nfsm_srvmtofh(f) \
|
|
nfsm_dissect(tl, u_long *, NFSX_FH); \
|
|
bcopy((caddr_t)tl, (caddr_t)f, NFSX_FH)
|
|
|
|
#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 \
|
|
fp->fa_type = vtonfs_type(vap->va_type); \
|
|
fp->fa_mode = vtonfs_mode(vap->va_type, vap->va_mode); \
|
|
fp->fa_nlink = txdr_unsigned(vap->va_nlink); \
|
|
fp->fa_uid = txdr_unsigned(vap->va_uid); \
|
|
fp->fa_gid = txdr_unsigned(vap->va_gid); \
|
|
if (nfsd->nd_nqlflag == NQL_NOVAL) { \
|
|
fp->fa_nfsblocksize = txdr_unsigned(vap->va_blocksize); \
|
|
if (vap->va_type == VFIFO) \
|
|
fp->fa_nfsrdev = 0xffffffff; \
|
|
else \
|
|
fp->fa_nfsrdev = txdr_unsigned(vap->va_rdev); \
|
|
fp->fa_nfsfsid = txdr_unsigned(vap->va_fsid); \
|
|
fp->fa_nfsfileid = txdr_unsigned(vap->va_fileid); \
|
|
fp->fa_nfssize = txdr_unsigned(vap->va_size); \
|
|
fp->fa_nfsblocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); \
|
|
txdr_nfstime(&vap->va_atime, &fp->fa_nfsatime); \
|
|
txdr_nfstime(&vap->va_mtime, &fp->fa_nfsmtime); \
|
|
fp->fa_nfsctime.nfs_sec = txdr_unsigned(vap->va_ctime.ts_sec); \
|
|
fp->fa_nfsctime.nfs_usec = txdr_unsigned(vap->va_gen); \
|
|
} else { \
|
|
fp->fa_nqblocksize = txdr_unsigned(vap->va_blocksize); \
|
|
if (vap->va_type == VFIFO) \
|
|
fp->fa_nqrdev = 0xffffffff; \
|
|
else \
|
|
fp->fa_nqrdev = txdr_unsigned(vap->va_rdev); \
|
|
fp->fa_nqfsid = txdr_unsigned(vap->va_fsid); \
|
|
fp->fa_nqfileid = txdr_unsigned(vap->va_fileid); \
|
|
txdr_hyper(&vap->va_size, &fp->fa_nqsize); \
|
|
txdr_hyper(&vap->va_bytes, &fp->fa_nqbytes); \
|
|
txdr_nqtime(&vap->va_atime, &fp->fa_nqatime); \
|
|
txdr_nqtime(&vap->va_mtime, &fp->fa_nqmtime); \
|
|
txdr_nqtime(&vap->va_ctime, &fp->fa_nqctime); \
|
|
fp->fa_nqflags = txdr_unsigned(vap->va_flags); \
|
|
fp->fa_nqgen = txdr_unsigned(vap->va_gen); \
|
|
txdr_hyper(&vap->va_filerev, &fp->fa_nqfilerev); \
|
|
}
|
|
|
|
#endif
|