it just makes more work. We pass a copy of the uid/gid with the credentials. (although, this may need to be revisited if a non AUTHUNIX authentication method (such as NFSKERB) ever gets implemented). Obtained from: NetBSD
455 lines
13 KiB
C
455 lines
13 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 8.2 (Berkeley) 3/30/95
|
|
* $Id: nfsm_subs.h,v 1.19 1998/05/31 18:19:43 peter Exp $
|
|
*/
|
|
|
|
|
|
#ifndef _NFS_NFSM_SUBS_H_
|
|
#define _NFS_NFSM_SUBS_H_
|
|
|
|
struct ucred;
|
|
struct vnode;
|
|
|
|
/*
|
|
* 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
|
|
*/
|
|
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))
|
|
|
|
/*
|
|
* 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 ((t1 = nfsm_disct(&md, &dpos, (s), t1, &cp2)) != 0){ \
|
|
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)) != 0) { \
|
|
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)) != 0) { \
|
|
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))) != 0) { \
|
|
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)) != 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) \
|
|
{ (s)->sa_modetrue = nfs_true; \
|
|
(s)->sa_mode = vtonfsv3_mode((a)->va_mode); \
|
|
(s)->sa_uidfalse = nfs_false; \
|
|
(s)->sa_gidfalse = nfs_false; \
|
|
(s)->sa_sizefalse = nfs_false; \
|
|
(s)->sa_atimetype = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); \
|
|
txdr_nfsv3time(&(a)->va_atime, &(s)->sa_atime); \
|
|
(s)->sa_mtimetype = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); \
|
|
txdr_nfsv3time(&(a)->va_mtime, &(s)->sa_mtime); \
|
|
}
|
|
|
|
#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)) != 0) { \
|
|
error = t1; \
|
|
m_freem(mrep); \
|
|
goto nfsmout; \
|
|
}
|
|
|
|
#define nfsm_uiotom(p,s) \
|
|
if ((t1 = nfsm_uiotombuf((p),&mb,(s),&bpos)) != 0) { \
|
|
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))
|
|
|
|
#define nfsm_request(v, t, p, c) \
|
|
if ((error = nfs_request((v), mreq, (t), (p), \
|
|
(c), &mrep, &md, &dpos)) != 0) { \
|
|
if (error & NFSERR_RETERR) \
|
|
error &= ~NFSERR_RETERR; \
|
|
else \
|
|
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((const char *)(a), (caddr_t)tl, (s)); \
|
|
} else if ((t2 = nfsm_strtmbuf(&mb, &bpos, (a), (s))) != 0) { \
|
|
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); \
|
|
if (mrep != NULL) { \
|
|
m_freem(mrep); \
|
|
mrep = NULL; \
|
|
} \
|
|
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)) != 0) { \
|
|
error = t1; \
|
|
m_freem(mrep); \
|
|
goto nfsmout; \
|
|
} }
|
|
|
|
#define nfsm_srvmtofh(f) \
|
|
{ int fhlen = NFSX_V3FH; \
|
|
if (nfsd->nd_flag & ND_NFSV3) { \
|
|
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED); \
|
|
fhlen = fxdr_unsigned(int, *tl); \
|
|
if (fhlen == 0) { \
|
|
bzero((caddr_t)(f), NFSX_V3FH); \
|
|
} else if (fhlen != NFSX_V3FH) { \
|
|
error = EBADRPC; \
|
|
nfsm_reply(0); \
|
|
} \
|
|
} \
|
|
if (fhlen != 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: \
|
|
getnanotime(&(a)->va_atime); \
|
|
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: \
|
|
getnanotime(&(a)->va_mtime); \
|
|
break; \
|
|
}; }
|
|
|
|
#endif
|