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[unix-history] / usr / src / sys / nfs / nfs_vnops.c
/*
* Copyright (c) 1989 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.
*
* %sccs.include.redist.c%
*
* @(#)nfs_vnops.c 7.75 (Berkeley) %G%
*/
/*
* vnode op calls for sun nfs version 2
*/
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/conf.h>
#include <sys/namei.h>
#include <sys/vnode.h>
#include <sys/specdev.h>
#include <sys/fifo.h>
#include <sys/map.h>
#include <vm/vm.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsv2.h>
#include <nfs/nfs.h>
#include <nfs/nfsnode.h>
#include <nfs/nfsmount.h>
#include <nfs/xdr_subs.h>
#include <nfs/nfsm_subs.h>
#include <nfs/nqnfs.h>
/* Defs */
#define TRUE 1
#define FALSE 0
/*
* Global vfs data structures for nfs
*/
int (**nfsv2_vnodeop_p)();
struct vnodeopv_entry_desc nfsv2_vnodeop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_lookup_desc, nfs_lookup }, /* lookup */
{ &vop_create_desc, nfs_create }, /* create */
{ &vop_mknod_desc, nfs_mknod }, /* mknod */
{ &vop_open_desc, nfs_open }, /* open */
{ &vop_close_desc, nfs_close }, /* close */
{ &vop_access_desc, nfs_access }, /* access */
{ &vop_getattr_desc, nfs_getattr }, /* getattr */
{ &vop_setattr_desc, nfs_setattr }, /* setattr */
{ &vop_read_desc, nfs_read }, /* read */
{ &vop_write_desc, nfs_write }, /* write */
{ &vop_ioctl_desc, nfs_ioctl }, /* ioctl */
{ &vop_select_desc, nfs_select }, /* select */
{ &vop_mmap_desc, nfs_mmap }, /* mmap */
{ &vop_fsync_desc, nfs_fsync }, /* fsync */
{ &vop_seek_desc, nfs_seek }, /* seek */
{ &vop_remove_desc, nfs_remove }, /* remove */
{ &vop_link_desc, nfs_link }, /* link */
{ &vop_rename_desc, nfs_rename }, /* rename */
{ &vop_mkdir_desc, nfs_mkdir }, /* mkdir */
{ &vop_rmdir_desc, nfs_rmdir }, /* rmdir */
{ &vop_symlink_desc, nfs_symlink }, /* symlink */
{ &vop_readdir_desc, nfs_readdir }, /* readdir */
{ &vop_readlink_desc, nfs_readlink }, /* readlink */
{ &vop_abortop_desc, nfs_abortop }, /* abortop */
{ &vop_inactive_desc, nfs_inactive }, /* inactive */
{ &vop_reclaim_desc, nfs_reclaim }, /* reclaim */
{ &vop_lock_desc, nfs_lock }, /* lock */
{ &vop_unlock_desc, nfs_unlock }, /* unlock */
{ &vop_bmap_desc, nfs_bmap }, /* bmap */
{ &vop_strategy_desc, nfs_strategy }, /* strategy */
{ &vop_print_desc, nfs_print }, /* print */
{ &vop_islocked_desc, nfs_islocked }, /* islocked */
{ &vop_advlock_desc, nfs_advlock }, /* advlock */
{ &vop_blkatoff_desc, nfs_blkatoff }, /* blkatoff */
{ &vop_vget_desc, nfs_vget }, /* vget */
{ &vop_valloc_desc, nfs_valloc }, /* valloc */
{ &vop_vfree_desc, nfs_vfree }, /* vfree */
{ &vop_truncate_desc, nfs_truncate }, /* truncate */
{ &vop_update_desc, nfs_update }, /* update */
{ &vop_bwrite_desc, vn_bwrite },
{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
};
struct vnodeopv_desc nfsv2_vnodeop_opv_desc =
{ &nfsv2_vnodeop_p, nfsv2_vnodeop_entries };
/*
* Special device vnode ops
*/
int (**spec_nfsv2nodeop_p)();
struct vnodeopv_entry_desc spec_nfsv2nodeop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_lookup_desc, spec_lookup }, /* lookup */
{ &vop_create_desc, spec_create }, /* create */
{ &vop_mknod_desc, spec_mknod }, /* mknod */
{ &vop_open_desc, spec_open }, /* open */
{ &vop_close_desc, spec_close }, /* close */
{ &vop_access_desc, nfs_access }, /* access */
{ &vop_getattr_desc, nfs_getattr }, /* getattr */
{ &vop_setattr_desc, nfs_setattr }, /* setattr */
{ &vop_read_desc, spec_read }, /* read */
{ &vop_write_desc, spec_write }, /* write */
{ &vop_ioctl_desc, spec_ioctl }, /* ioctl */
{ &vop_select_desc, spec_select }, /* select */
{ &vop_mmap_desc, spec_mmap }, /* mmap */
{ &vop_fsync_desc, spec_fsync }, /* fsync */
{ &vop_seek_desc, spec_seek }, /* seek */
{ &vop_remove_desc, spec_remove }, /* remove */
{ &vop_link_desc, spec_link }, /* link */
{ &vop_rename_desc, spec_rename }, /* rename */
{ &vop_mkdir_desc, spec_mkdir }, /* mkdir */
{ &vop_rmdir_desc, spec_rmdir }, /* rmdir */
{ &vop_symlink_desc, spec_symlink }, /* symlink */
{ &vop_readdir_desc, spec_readdir }, /* readdir */
{ &vop_readlink_desc, spec_readlink }, /* readlink */
{ &vop_abortop_desc, spec_abortop }, /* abortop */
{ &vop_inactive_desc, nfs_inactive }, /* inactive */
{ &vop_reclaim_desc, nfs_reclaim }, /* reclaim */
{ &vop_lock_desc, nfs_lock }, /* lock */
{ &vop_unlock_desc, nfs_unlock }, /* unlock */
{ &vop_bmap_desc, spec_bmap }, /* bmap */
{ &vop_strategy_desc, spec_strategy }, /* strategy */
{ &vop_print_desc, nfs_print }, /* print */
{ &vop_islocked_desc, nfs_islocked }, /* islocked */
{ &vop_advlock_desc, spec_advlock }, /* advlock */
{ &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */
{ &vop_vget_desc, spec_vget }, /* vget */
{ &vop_valloc_desc, spec_valloc }, /* valloc */
{ &vop_vfree_desc, spec_vfree }, /* vfree */
{ &vop_truncate_desc, spec_truncate }, /* truncate */
{ &vop_update_desc, nfs_update }, /* update */
{ &vop_bwrite_desc, vn_bwrite },
{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
};
struct vnodeopv_desc spec_nfsv2nodeop_opv_desc =
{ &spec_nfsv2nodeop_p, spec_nfsv2nodeop_entries };
#ifdef FIFO
int (**fifo_nfsv2nodeop_p)();
struct vnodeopv_entry_desc fifo_nfsv2nodeop_entries[] = {
{ &vop_default_desc, vn_default_error },
{ &vop_lookup_desc, fifo_lookup }, /* lookup */
{ &vop_create_desc, fifo_create }, /* create */
{ &vop_mknod_desc, fifo_mknod }, /* mknod */
{ &vop_open_desc, fifo_open }, /* open */
{ &vop_close_desc, fifo_close }, /* close */
{ &vop_access_desc, nfs_access }, /* access */
{ &vop_getattr_desc, nfs_getattr }, /* getattr */
{ &vop_setattr_desc, nfs_setattr }, /* setattr */
{ &vop_read_desc, fifo_read }, /* read */
{ &vop_write_desc, fifo_write }, /* write */
{ &vop_ioctl_desc, fifo_ioctl }, /* ioctl */
{ &vop_select_desc, fifo_select }, /* select */
{ &vop_mmap_desc, fifo_mmap }, /* mmap */
{ &vop_fsync_desc, fifo_fsync }, /* fsync */
{ &vop_seek_desc, fifo_seek }, /* seek */
{ &vop_remove_desc, fifo_remove }, /* remove */
{ &vop_link_desc, fifo_link }, /* link */
{ &vop_rename_desc, fifo_rename }, /* rename */
{ &vop_mkdir_desc, fifo_mkdir }, /* mkdir */
{ &vop_rmdir_desc, fifo_rmdir }, /* rmdir */
{ &vop_symlink_desc, fifo_symlink }, /* symlink */
{ &vop_readdir_desc, fifo_readdir }, /* readdir */
{ &vop_readlink_desc, fifo_readlink }, /* readlink */
{ &vop_abortop_desc, fifo_abortop }, /* abortop */
{ &vop_inactive_desc, nfs_inactive }, /* inactive */
{ &vop_reclaim_desc, nfs_reclaim }, /* reclaim */
{ &vop_lock_desc, nfs_lock }, /* lock */
{ &vop_unlock_desc, nfs_unlock }, /* unlock */
{ &vop_bmap_desc, fifo_bmap }, /* bmap */
{ &vop_strategy_desc, fifo_badop }, /* strategy */
{ &vop_print_desc, nfs_print }, /* print */
{ &vop_islocked_desc, nfs_islocked }, /* islocked */
{ &vop_advlock_desc, fifo_advlock }, /* advlock */
{ &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */
{ &vop_vget_desc, fifo_vget }, /* vget */
{ &vop_valloc_desc, fifo_valloc }, /* valloc */
{ &vop_vfree_desc, fifo_vfree }, /* vfree */
{ &vop_truncate_desc, fifo_truncate }, /* truncate */
{ &vop_update_desc, nfs_update }, /* update */
{ &vop_bwrite_desc, vn_bwrite },
{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
};
struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc =
{ &fifo_nfsv2nodeop_p, fifo_nfsv2nodeop_entries };
#endif /* FIFO */
/*
* Global variables
*/
extern u_long nfs_procids[NFS_NPROCS];
extern u_long nfs_prog, nfs_vers;
extern char nfsiobuf[MAXPHYS+NBPG];
struct buf nfs_bqueue; /* Queue head for nfsiod's */
struct proc *nfs_iodwant[NFS_MAXASYNCDAEMON];
int nfs_numasync = 0;
#define DIRHDSIZ (sizeof (struct readdir) - (MAXNAMLEN + 1))
/*
* nfs null call from vfs.
*/
int
nfs_null(vp, cred, procp)
struct vnode *vp;
struct ucred *cred;
struct proc *procp;
{
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb;
nfsm_reqhead(vp, NFSPROC_NULL, 0);
nfsm_request(vp, NFSPROC_NULL, procp, cred);
nfsm_reqdone;
return (error);
}
/*
* nfs access vnode op.
* Essentially just get vattr and then imitate iaccess()
*/
int
nfs_access (ap)
struct vop_access_args *ap;
#define vp (ap->a_vp)
#define mode (ap->a_mode)
#define cred (ap->a_cred)
#define procp (ap->a_p)
{
USES_VOP_GETATTR;
register struct vattr *vap;
register gid_t *gp;
struct vattr vattr;
register int i;
int error;
/*
* If you're the super-user,
* you always get access.
*/
if (cred->cr_uid == 0)
return (0);
vap = &vattr;
if (error = VOP_GETATTR(vp, vap, cred, procp))
return (error);
/*
* Access check is based on only one of owner, group, public.
* If not owner, then check group. If not a member of the
* group, then check public access.
*/
if (cred->cr_uid != vap->va_uid) {
mode >>= 3;
gp = cred->cr_groups;
for (i = 0; i < cred->cr_ngroups; i++, gp++)
if (vap->va_gid == *gp)
goto found;
mode >>= 3;
found:
;
}
if ((vap->va_mode & mode) != 0)
return (0);
return (EACCES);
}
#undef vp
#undef mode
#undef cred
#undef procp
/*
* nfs open vnode op
* Just check to see if the type is ok
* and that deletion is not in progress.
*/
/* ARGSUSED */
int
nfs_open (ap)
struct vop_open_args *ap;
#define vp (ap->a_vp)
#define mode (ap->a_mode)
#define cred (ap->a_cred)
#define procp (ap->a_p)
{
if (vp->v_type != VREG && vp->v_type != VDIR && vp->v_type != VLNK)
return (EACCES);
if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0)
VTONFS(vp)->n_attrstamp = 0; /* For Open/Close consistency */
return (0);
}
#undef vp
#undef mode
#undef cred
#undef procp
/*
* nfs close vnode op
* For reg files, invalidate any buffer cache entries.
*/
/* ARGSUSED */
int
nfs_close (ap)
struct vop_close_args *ap;
#define vp (ap->a_vp)
#define fflags (ap->a_fflag)
#define cred (ap->a_cred)
#define procp (ap->a_p)
{
register struct nfsnode *np = VTONFS(vp);
int error = 0;
if ((np->n_flag & NMODIFIED) &&
(VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) == 0 &&
vp->v_type == VREG) {
np->n_flag &= ~NMODIFIED;
vinvalbuf(vp, TRUE);
np->n_attrstamp = 0;
if (np->n_flag & NWRITEERR) {
np->n_flag &= ~NWRITEERR;
error = np->n_error;
}
}
return (error);
}
#undef vp
#undef fflags
#undef cred
#undef procp
/*
* nfs getattr call from vfs.
*/
int
nfs_getattr (ap)
struct vop_getattr_args *ap;
#define vp (ap->a_vp)
#define vap (ap->a_vap)
#define cred (ap->a_cred)
#define procp (ap->a_p)
{
register caddr_t cp;
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
/* First look in the cache.. */
if (nfs_getattrcache(vp, vap) == 0)
return (0);
nfsstats.rpccnt[NFSPROC_GETATTR]++;
nfsm_reqhead(vp, NFSPROC_GETATTR, NFSX_FH);
nfsm_fhtom(vp);
nfsm_request(vp, NFSPROC_GETATTR, procp, cred);
nfsm_loadattr(vp, vap);
nfsm_reqdone;
return (error);
}
#undef vp
#undef vap
#undef cred
#undef procp
/*
* nfs setattr call.
*/
int
nfs_setattr (ap)
struct vop_setattr_args *ap;
#define vp (ap->a_vp)
#define vap (ap->a_vap)
#define cred (ap->a_cred)
#define procp (ap->a_p)
{
register struct nfsv2_sattr *sp;
register caddr_t cp;
register long t1;
caddr_t bpos, dpos, cp2;
u_long *tl;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
struct nfsnode *np = VTONFS(vp);
u_quad_t frev;
nfsstats.rpccnt[NFSPROC_SETATTR]++;
nfsm_reqhead(vp, NFSPROC_SETATTR, NFSX_FH+NFSX_SATTR);
nfsm_fhtom(vp);
nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR);
if (vap->va_mode == 0xffff)
sp->sa_mode = VNOVAL;
else
sp->sa_mode = vtonfs_mode(vp->v_type, vap->va_mode);
if (vap->va_uid == 0xffff)
sp->sa_uid = VNOVAL;
else
sp->sa_uid = txdr_unsigned(vap->va_uid);
if (vap->va_gid == 0xffff)
sp->sa_gid = VNOVAL;
else
sp->sa_gid = txdr_unsigned(vap->va_gid);
sp->sa_size = txdr_unsigned(vap->va_size);
sp->sa_atime.tv_sec = txdr_unsigned(vap->va_atime.tv_sec);
sp->sa_atime.tv_usec = txdr_unsigned(vap->va_flags);
txdr_time(&vap->va_mtime, &sp->sa_mtime);
if (vap->va_size != VNOVAL || vap->va_mtime.tv_sec != VNOVAL ||
vap->va_atime.tv_sec != VNOVAL) {
if (np->n_flag & NMODIFIED) {
np->n_flag &= ~NMODIFIED;
if (vap->va_size == 0)
vinvalbuf(vp, FALSE);
else
vinvalbuf(vp, TRUE);
}
}
nfsm_request(vp, NFSPROC_SETATTR, procp, cred);
nfsm_loadattr(vp, (struct vattr *)0);
if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) &&
NQNFS_CKCACHABLE(vp, NQL_WRITE)) {
nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED);
fxdr_hyper(tl, &frev);
if (QUADGT(frev, np->n_brev))
np->n_brev = frev;
}
nfsm_reqdone;
return (error);
}
#undef vp
#undef vap
#undef cred
#undef procp
/*
* nfs lookup call, one step at a time...
* First look in cache
* If not found, unlock the directory nfsnode and do the rpc
*/
int
nfs_lookup (ap)
struct vop_lookup_args *ap;
#define dvp (ap->a_dvp)
#define vpp (ap->a_vpp)
#define cnp (ap->a_cnp)
{
USES_VOP_GETATTR;
register struct vnode *vdp;
register u_long *tl;
register caddr_t cp;
register long t1, t2;
struct nfsmount *nmp;
struct nfsnode *tp;
caddr_t bpos, dpos, cp2;
time_t reqtime;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
struct vnode *newvp;
long len;
nfsv2fh_t *fhp;
struct nfsnode *np;
int lockparent, wantparent, error = 0;
int nqlflag, cachable;
u_quad_t frev;
*vpp = NULL;
if (dvp->v_type != VDIR)
return (ENOTDIR);
lockparent = cnp->cn_flags & LOCKPARENT;
wantparent = cnp->cn_flags & (LOCKPARENT|WANTPARENT);
nmp = VFSTONFS(dvp->v_mount);
np = VTONFS(dvp);
if ((error = cache_lookup(dvp, vpp, cnp)) && error != ENOENT) {
struct vattr vattr;
int vpid;
vdp = *vpp;
vpid = vdp->v_id;
/*
* See the comment starting `Step through' in ufs/ufs_lookup.c
* for an explanation of the locking protocol
*/
if (dvp == vdp) {
VREF(vdp);
error = 0;
} else
error = vget(vdp);
if (!error) {
if (vpid == vdp->v_id) {
if (nmp->nm_flag & NFSMNT_NQNFS) {
if (NQNFS_CKCACHABLE(dvp, NQL_READ)) {
if (QUADNE(np->n_lrev, np->n_brev) ||
(np->n_flag & NMODIFIED)) {
np->n_direofoffset = 0;
cache_purge(dvp);
np->n_flag &= ~NMODIFIED;
vinvalbuf(dvp, FALSE);
np->n_brev = np->n_lrev;
} else {
nfsstats.lookupcache_hits++;
if (cnp->cn_nameiop != LOOKUP &&
(cnp->cn_flags&ISLASTCN))
cnp->cn_flags |= SAVENAME;
return (0);
}
}
} else if (!VOP_GETATTR(vdp, &vattr, cnp->cn_cred, cnp->cn_proc) &&
vattr.va_ctime.tv_sec == VTONFS(vdp)->n_ctime) {
nfsstats.lookupcache_hits++;
if (cnp->cn_nameiop != LOOKUP && (cnp->cn_flags&ISLASTCN))
cnp->cn_flags |= SAVENAME;
return (0);
}
cache_purge(vdp);
}
vrele(vdp);
}
*vpp = NULLVP;
}
error = 0;
nfsstats.lookupcache_misses++;
nfsstats.rpccnt[NFSPROC_LOOKUP]++;
len = cnp->cn_namelen;
nfsm_reqhead(dvp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len));
/*
* For nqnfs optionally piggyback a getlease request for the name
* being looked up.
*/
if (nmp->nm_flag & NFSMNT_NQNFS) {
if ((nmp->nm_flag & NFSMNT_NQLOOKLEASE) &&
((cnp->cn_flags&MAKEENTRY) && (cnp->cn_nameiop != DELETE || !(cnp->cn_flags&ISLASTCN)))) {
nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED);
*tl++ = txdr_unsigned(NQL_READ);
*tl = txdr_unsigned(nmp->nm_leaseterm);
} else {
nfsm_build(tl, u_long *, NFSX_UNSIGNED);
*tl = 0;
}
}
nfsm_fhtom(dvp);
nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN);
reqtime = time.tv_sec;
nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred);
nfsmout:
if (error) {
if ((cnp->cn_nameiop == CREATE || cnp->cn_nameiop == RENAME) &&
(cnp->cn_flags & ISLASTCN) && error == ENOENT)
error = EJUSTRETURN;
if (cnp->cn_nameiop != LOOKUP && (cnp->cn_flags&ISLASTCN))
cnp->cn_flags |= SAVENAME;
return (error);
}
if (nmp->nm_flag & NFSMNT_NQNFS) {
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
if (*tl) {
nqlflag = fxdr_unsigned(int, *tl);
nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED);
cachable = fxdr_unsigned(int, *tl++);
reqtime += fxdr_unsigned(int, *tl++);
fxdr_hyper(tl, &frev);
} else
nqlflag = 0;
}
nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH);
/*
* Handle RENAME case...
*/
if (cnp->cn_nameiop == RENAME && wantparent && (cnp->cn_flags&ISLASTCN)) {
if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) {
m_freem(mrep);
return (EISDIR);
}
if (error = nfs_nget(dvp->v_mount, fhp, &np)) {
m_freem(mrep);
return (error);
}
newvp = NFSTOV(np);
if (error =
nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) {
vrele(newvp);
m_freem(mrep);
return (error);
}
*vpp = newvp;
m_freem(mrep);
cnp->cn_flags |= SAVENAME;
return (0);
}
if (!bcmp(np->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) {
VREF(dvp);
newvp = dvp;
} else {
if (error = nfs_nget(dvp->v_mount, fhp, &np)) {
m_freem(mrep);
return (error);
}
newvp = NFSTOV(np);
}
if (error = nfs_loadattrcache(&newvp, &md, &dpos, (struct vattr *)0)) {
vrele(newvp);
m_freem(mrep);
return (error);
}
m_freem(mrep);
*vpp = newvp;
if (cnp->cn_nameiop != LOOKUP && (cnp->cn_flags&ISLASTCN))
cnp->cn_flags |= SAVENAME;
if ((cnp->cn_flags&MAKEENTRY) && (cnp->cn_nameiop != DELETE || !(cnp->cn_flags&ISLASTCN))) {
if ((nmp->nm_flag & NFSMNT_NQNFS) == 0)
np->n_ctime = np->n_vattr.va_ctime.tv_sec;
else if (nqlflag && reqtime > time.tv_sec) {
if (np->n_tnext) {
if (np->n_tnext == (struct nfsnode *)nmp)
nmp->nm_tprev = np->n_tprev;
else
np->n_tnext->n_tprev = np->n_tprev;
if (np->n_tprev == (struct nfsnode *)nmp)
nmp->nm_tnext = np->n_tnext;
else
np->n_tprev->n_tnext = np->n_tnext;
if (nqlflag == NQL_WRITE)
np->n_flag |= NQNFSWRITE;
} else if (nqlflag == NQL_READ)
np->n_flag &= ~NQNFSWRITE;
else
np->n_flag |= NQNFSWRITE;
if (cachable)
np->n_flag &= ~NQNFSNONCACHE;
else
np->n_flag |= NQNFSNONCACHE;
np->n_expiry = reqtime;
np->n_lrev = frev;
tp = nmp->nm_tprev;
while (tp != (struct nfsnode *)nmp && tp->n_expiry > np->n_expiry)
tp = tp->n_tprev;
if (tp == (struct nfsnode *)nmp) {
np->n_tnext = nmp->nm_tnext;
nmp->nm_tnext = np;
} else {
np->n_tnext = tp->n_tnext;
tp->n_tnext = np;
}
np->n_tprev = tp;
if (np->n_tnext == (struct nfsnode *)nmp)
nmp->nm_tprev = np;
else
np->n_tnext->n_tprev = np;
}
cache_enter(dvp, *vpp, cnp);
}
return (0);
}
#undef dvp
#undef vpp
#undef cnp
/*
* nfs read call.
* Just call nfs_bioread() to do the work.
*/
int
nfs_read (ap)
struct vop_read_args *ap;
#define vp (ap->a_vp)
#define uiop (ap->a_uio)
#define ioflag (ap->a_ioflag)
#define cred (ap->a_cred)
{
if (vp->v_type != VREG)
return (EPERM);
return (nfs_bioread(vp, uiop, ioflag, cred));
}
#undef vp
#undef uiop
#undef ioflag
#undef cred
/*
* nfs readlink call
*/
int
nfs_readlink (ap)
struct vop_readlink_args *ap;
#define vp (ap->a_vp)
#define uiop (ap->a_uio)
#define cred (ap->a_cred)
{
if (vp->v_type != VLNK)
return (EPERM);
return (nfs_bioread(vp, uiop, 0, cred));
}
#undef vp
#undef uiop
#undef cred
/*
* Do a readlink rpc.
* Called by nfs_doio() from below the buffer cache.
*/
int
nfs_readlinkrpc(vp, uiop, cred)
register struct vnode *vp;
struct uio *uiop;
struct ucred *cred;
{
register u_long *tl;
register caddr_t cp;
register long t1;
caddr_t bpos, dpos, cp2;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
long len;
nfsstats.rpccnt[NFSPROC_READLINK]++;
nfsm_reqhead(vp, NFSPROC_READLINK, NFSX_FH);
nfsm_fhtom(vp);
nfsm_request(vp, NFSPROC_READLINK, uiop->uio_procp, cred);
nfsm_strsiz(len, NFS_MAXPATHLEN);
nfsm_mtouio(uiop, len);
nfsm_reqdone;
return (error);
}
/*
* nfs read rpc call
* Ditto above
*/
int
nfs_readrpc(vp, uiop, cred)
register struct vnode *vp;
struct uio *uiop;
struct ucred *cred;
{
register u_long *tl;
register caddr_t cp;
register long t1;
caddr_t bpos, dpos, cp2;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
struct nfsmount *nmp;
long len, retlen, tsiz;
nmp = VFSTONFS(vp->v_mount);
tsiz = uiop->uio_resid;
while (tsiz > 0) {
nfsstats.rpccnt[NFSPROC_READ]++;
len = (tsiz > nmp->nm_rsize) ? nmp->nm_rsize : tsiz;
nfsm_reqhead(vp, NFSPROC_READ, NFSX_FH+NFSX_UNSIGNED*3);
nfsm_fhtom(vp);
nfsm_build(tl, u_long *, NFSX_UNSIGNED*3);
*tl++ = txdr_unsigned(uiop->uio_offset);
*tl++ = txdr_unsigned(len);
*tl = 0;
nfsm_request(vp, NFSPROC_READ, uiop->uio_procp, cred);
nfsm_loadattr(vp, (struct vattr *)0);
nfsm_strsiz(retlen, nmp->nm_rsize);
nfsm_mtouio(uiop, retlen);
m_freem(mrep);
if (retlen < len)
tsiz = 0;
else
tsiz -= len;
}
nfsmout:
return (error);
}
/*
* nfs write call
*/
int
nfs_writerpc(vp, uiop, cred)
register struct vnode *vp;
struct uio *uiop;
struct ucred *cred;
{
register u_long *tl;
register caddr_t cp;
register long t1;
caddr_t bpos, dpos, cp2;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
struct nfsmount *nmp;
struct nfsnode *np = VTONFS(vp);
u_quad_t frev;
long len, tsiz;
nmp = VFSTONFS(vp->v_mount);
tsiz = uiop->uio_resid;
while (tsiz > 0) {
nfsstats.rpccnt[NFSPROC_WRITE]++;
len = (tsiz > nmp->nm_wsize) ? nmp->nm_wsize : tsiz;
nfsm_reqhead(vp, NFSPROC_WRITE,
NFSX_FH+NFSX_UNSIGNED*4+nfsm_rndup(len));
nfsm_fhtom(vp);
nfsm_build(tl, u_long *, NFSX_UNSIGNED*4);
*(tl+1) = txdr_unsigned(uiop->uio_offset);
*(tl+3) = txdr_unsigned(len);
nfsm_uiotom(uiop, len);
nfsm_request(vp, NFSPROC_WRITE, uiop->uio_procp, cred);
nfsm_loadattr(vp, (struct vattr *)0);
if (nmp->nm_flag & NFSMNT_MYWRITE)
VTONFS(vp)->n_mtime = VTONFS(vp)->n_vattr.va_mtime.tv_sec;
else if ((nmp->nm_flag & NFSMNT_NQNFS) &&
NQNFS_CKCACHABLE(vp, NQL_WRITE)) {
nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED);
fxdr_hyper(tl, &frev);
if (QUADGT(frev, np->n_brev))
np->n_brev = frev;
}
m_freem(mrep);
tsiz -= len;
}
nfsmout:
if (error)
uiop->uio_resid = tsiz;
return (error);
}
/*
* nfs mknod call
* This is a kludge. Use a create rpc but with the IFMT bits of the mode
* set to specify the file type and the size field for rdev.
*/
/* ARGSUSED */
int
nfs_mknod (ap)
struct vop_mknod_args *ap;
#define dvp (ap->a_dvp)
#define vpp (ap->a_vpp)
#define cnp (ap->a_cnp)
#define vap (ap->a_vap)
{
USES_VOP_ABORTOP;
register struct nfsv2_sattr *sp;
register u_long *tl;
register caddr_t cp;
register long t2;
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
u_long rdev;
if (vap->va_type == VCHR || vap->va_type == VBLK)
rdev = txdr_unsigned(vap->va_rdev);
#ifdef FIFO
else if (vap->va_type == VFIFO)
rdev = 0xffffffff;
#endif /* FIFO */
else {
VOP_ABORTOP(dvp, cnp);
vput(dvp);
return (EOPNOTSUPP);
}
nfsstats.rpccnt[NFSPROC_CREATE]++;
nfsm_reqhead(dvp, NFSPROC_CREATE,
NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR);
nfsm_fhtom(dvp);
nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR);
sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode);
sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid);
sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid);
sp->sa_size = rdev;
/* or should these be VNOVAL ?? */
txdr_time(&vap->va_atime, &sp->sa_atime);
txdr_time(&vap->va_mtime, &sp->sa_mtime);
nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred);
nfsm_reqdone;
FREE(cnp->cn_pnbuf, M_NAMEI);
VTONFS(dvp)->n_flag |= NMODIFIED;
vrele(dvp);
return (error);
}
#undef dvp
#undef vpp
#undef cnp
#undef vap
/*
* nfs file create call
*/
int
nfs_create (ap)
struct vop_create_args *ap;
#define dvp (ap->a_dvp)
#define vpp (ap->a_vpp)
#define cnp (ap->a_cnp)
#define vap (ap->a_vap)
{
register struct nfsv2_sattr *sp;
register u_long *tl;
register caddr_t cp;
register long t1, t2;
caddr_t bpos, dpos, cp2;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
nfsstats.rpccnt[NFSPROC_CREATE]++;
nfsm_reqhead(dvp, NFSPROC_CREATE,
NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+NFSX_SATTR);
nfsm_fhtom(dvp);
nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR);
sp->sa_mode = vtonfs_mode(vap->va_type, vap->va_mode);
sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid);
sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid);
sp->sa_size = txdr_unsigned(0);
/* or should these be VNOVAL ?? */
txdr_time(&vap->va_atime, &sp->sa_atime);
txdr_time(&vap->va_mtime, &sp->sa_mtime);
nfsm_request(dvp, NFSPROC_CREATE, cnp->cn_proc, cnp->cn_cred);
nfsm_mtofh(dvp, *vpp);
nfsm_reqdone;
FREE(cnp->cn_pnbuf, M_NAMEI);
VTONFS(dvp)->n_flag |= NMODIFIED;
vrele(dvp);
return (error);
}
#undef dvp
#undef vpp
#undef cnp
#undef vap
/*
* nfs file remove call
* To try and make nfs semantics closer to ufs semantics, a file that has
* other processes using the vnode is renamed instead of removed and then
* removed later on the last close.
* - If v_usecount > 1
* If a rename is not already in the works
* call nfs_sillyrename() to set it up
* else
* do the remove rpc
*/
int
nfs_remove (ap)
struct vop_remove_args *ap;
#define dvp (ap->a_dvp)
#define vp (ap->a_vp)
#define cnp (ap->a_cnp)
{
register struct nfsnode *np = VTONFS(vp);
register u_long *tl;
register caddr_t cp;
register long t2;
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
if (vp->v_usecount > 1) {
if (!np->n_sillyrename)
error = nfs_sillyrename(dvp, vp, cnp);
} else {
/*
* Purge the name cache so that the chance of a lookup for
* the name succeeding while the remove is in progress is
* minimized. Without node locking it can still happen, such
* that an I/O op returns ESTALE, but since you get this if
* another host removes the file..
*/
cache_purge(vp);
/*
* Throw away biocache buffers. Mainly to avoid
* unnecessary delayed writes.
*/
vinvalbuf(vp, FALSE);
/* Do the rpc */
nfsstats.rpccnt[NFSPROC_REMOVE]++;
nfsm_reqhead(dvp, NFSPROC_REMOVE,
NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen));
nfsm_fhtom(dvp);
nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_request(dvp, NFSPROC_REMOVE, cnp->cn_proc, cnp->cn_cred);
nfsm_reqdone;
FREE(cnp->cn_pnbuf, M_NAMEI);
VTONFS(dvp)->n_flag |= NMODIFIED;
/*
* Kludge City: If the first reply to the remove rpc is lost..
* the reply to the retransmitted request will be ENOENT
* since the file was in fact removed
* Therefore, we cheat and return success.
*/
if (error == ENOENT)
error = 0;
}
np->n_attrstamp = 0;
vrele(dvp);
vrele(vp);
return (error);
}
#undef dvp
#undef vp
#undef cnp
/*
* nfs file remove rpc called from nfs_inactive
*/
int
nfs_removeit(sp, procp)
register struct sillyrename *sp;
struct proc *procp;
{
register u_long *tl;
register caddr_t cp;
register long t2;
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
nfsstats.rpccnt[NFSPROC_REMOVE]++;
nfsm_reqhead(sp->s_dvp, NFSPROC_REMOVE,
NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(sp->s_namlen));
nfsm_fhtom(sp->s_dvp);
nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN);
nfsm_request(sp->s_dvp, NFSPROC_REMOVE, procp, sp->s_cred);
nfsm_reqdone;
VTONFS(sp->s_dvp)->n_flag |= NMODIFIED;
return (error);
}
/*
* nfs file rename call
*/
int
nfs_rename (ap)
struct vop_rename_args *ap;
#define fdvp (ap->a_fdvp)
#define fvp (ap->a_fvp)
#define fcnp (ap->a_fcnp)
#define tdvp (ap->a_tdvp)
#define tvp (ap->a_tvp)
#define tcnp (ap->a_tcnp)
{
register u_long *tl;
register caddr_t cp;
register long t2;
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
nfsstats.rpccnt[NFSPROC_RENAME]++;
nfsm_reqhead(fdvp, NFSPROC_RENAME,
(NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(fcnp->cn_namelen)+
nfsm_rndup(fcnp->cn_namelen)); /* or fcnp->cn_cred?*/
nfsm_fhtom(fdvp);
nfsm_strtom(fcnp->cn_nameptr, fcnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_fhtom(tdvp);
nfsm_strtom(tcnp->cn_nameptr, tcnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_request(fdvp, NFSPROC_RENAME, tcnp->cn_proc, tcnp->cn_cred);
nfsm_reqdone;
VTONFS(fdvp)->n_flag |= NMODIFIED;
VTONFS(tdvp)->n_flag |= NMODIFIED;
if (fvp->v_type == VDIR) {
if (tvp != NULL && tvp->v_type == VDIR)
cache_purge(tdvp);
cache_purge(fdvp);
}
if (tdvp == tvp)
vrele(tdvp);
else
vput(tdvp);
if (tvp)
vput(tvp);
vrele(fdvp);
vrele(fvp);
/*
* Kludge: Map ENOENT => 0 assuming that it is a reply to a retry.
*/
if (error == ENOENT)
error = 0;
return (error);
}
#undef fdvp
#undef fvp
#undef fcnp
#undef tdvp
#undef tvp
#undef tcnp
/*
* nfs file rename rpc called from nfs_remove() above
*/
int
nfs_renameit(sdvp, scnp, sp)
struct vnode *sdvp;
struct componentname *scnp;
register struct sillyrename *sp;
{
register u_long *tl;
register caddr_t cp;
register long t2;
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
nfsstats.rpccnt[NFSPROC_RENAME]++;
nfsm_reqhead(sdvp, NFSPROC_RENAME,
(NFSX_FH+NFSX_UNSIGNED)*2+nfsm_rndup(scnp->cn_namelen)+
nfsm_rndup(sp->s_namlen));
nfsm_fhtom(sdvp);
nfsm_strtom(scnp->cn_nameptr, scnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_fhtom(sdvp);
nfsm_strtom(sp->s_name, sp->s_namlen, NFS_MAXNAMLEN);
nfsm_request(sdvp, NFSPROC_RENAME, scnp->cn_proc, scnp->cn_cred);
nfsm_reqdone;
FREE(scnp->cn_pnbuf, M_NAMEI);
VTONFS(sdvp)->n_flag |= NMODIFIED;
return (error);
}
/*
* nfs hard link create call
*/
int
nfs_link (ap)
struct vop_link_args *ap;
#define tdvp (ap->a_vp)
#define vp (ap->a_tdvp)
#define cnp (ap->a_cnp)
{
register u_long *tl;
register caddr_t cp;
register long t2;
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
nfsstats.rpccnt[NFSPROC_LINK]++;
nfsm_reqhead(vp, NFSPROC_LINK,
NFSX_FH*2+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen));
nfsm_fhtom(vp);
nfsm_fhtom(tdvp);
nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_request(vp, NFSPROC_LINK, cnp->cn_proc, cnp->cn_cred);
nfsm_reqdone;
FREE(cnp->cn_pnbuf, M_NAMEI);
VTONFS(vp)->n_attrstamp = 0;
VTONFS(tdvp)->n_flag |= NMODIFIED;
vrele(tdvp);
/*
* Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
*/
if (error == EEXIST)
error = 0;
return (error);
}
#undef tdvp
#undef vp
#undef cnp
/*
* nfs symbolic link create call
*/
/* start here */
int
nfs_symlink (ap)
struct vop_symlink_args *ap;
#define dvp (ap->a_dvp)
#define vpp (ap->a_vpp)
#define cnp (ap->a_cnp)
#define vap (ap->a_vap)
#define nm (ap->a_target)
{
register struct nfsv2_sattr *sp;
register u_long *tl;
register caddr_t cp;
register long t2;
caddr_t bpos, dpos;
int slen, error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
nfsstats.rpccnt[NFSPROC_SYMLINK]++;
slen = strlen(nm);
nfsm_reqhead(dvp, NFSPROC_SYMLINK,
NFSX_FH+2*NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen)+nfsm_rndup(slen)+NFSX_SATTR);
nfsm_fhtom(dvp);
nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_strtom(nm, slen, NFS_MAXPATHLEN);
nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR);
sp->sa_mode = vtonfs_mode(VLNK, vap->va_mode);
sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid);
sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid);
sp->sa_size = txdr_unsigned(VNOVAL);
txdr_time(&vap->va_atime, &sp->sa_atime); /* or VNOVAL ?? */
txdr_time(&vap->va_mtime, &sp->sa_mtime); /* or VNOVAL ?? */
nfsm_request(dvp, NFSPROC_SYMLINK, cnp->cn_proc, cnp->cn_cred);
nfsm_reqdone;
FREE(cnp->cn_pnbuf, M_NAMEI);
VTONFS(dvp)->n_flag |= NMODIFIED;
vrele(dvp);
/*
* Kludge: Map EEXIST => 0 assuming that it is a reply to a retry.
*/
if (error == EEXIST)
error = 0;
return (error);
}
#undef dvp
#undef vpp
#undef cnp
#undef vap
#undef nm
/*
* nfs make dir call
*/
int
nfs_mkdir (ap)
struct vop_mkdir_args *ap;
#define dvp (ap->a_dvp)
#define vpp (ap->a_vpp)
#define cnp (ap->a_cnp)
#define vap (ap->a_vap)
{
register struct nfsv2_sattr *sp;
register u_long *tl;
register caddr_t cp;
register long t1, t2;
register int len;
caddr_t bpos, dpos, cp2;
int error = 0, firsttry = 1;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
len = cnp->cn_namelen;
nfsstats.rpccnt[NFSPROC_MKDIR]++;
nfsm_reqhead(dvp, NFSPROC_MKDIR,
NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len)+NFSX_SATTR);
nfsm_fhtom(dvp);
nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN);
nfsm_build(sp, struct nfsv2_sattr *, NFSX_SATTR);
sp->sa_mode = vtonfs_mode(VDIR, vap->va_mode);
sp->sa_uid = txdr_unsigned(cnp->cn_cred->cr_uid);
sp->sa_gid = txdr_unsigned(cnp->cn_cred->cr_gid);
sp->sa_size = txdr_unsigned(VNOVAL);
txdr_time(&vap->va_atime, &sp->sa_atime); /* or VNOVAL ?? */
txdr_time(&vap->va_mtime, &sp->sa_mtime); /* or VNOVAL ?? */
nfsm_request(dvp, NFSPROC_MKDIR, cnp->cn_proc, cnp->cn_cred);
nfsm_mtofh(dvp, *vpp);
nfsm_reqdone;
VTONFS(dvp)->n_flag |= NMODIFIED;
/*
* Kludge: Map EEXIST => 0 assuming that you have a reply to a retry
* if we can succeed in looking up the directory.
* "firsttry" is necessary since the macros may "goto nfsmout" which
* is above the if on errors. (Ugh)
*/
if (error == EEXIST && firsttry) {
firsttry = 0;
error = 0;
nfsstats.rpccnt[NFSPROC_LOOKUP]++;
*vpp = NULL;
nfsm_reqhead(dvp, NFSPROC_LOOKUP,
NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len));
nfsm_fhtom(dvp);
nfsm_strtom(cnp->cn_nameptr, len, NFS_MAXNAMLEN);
nfsm_request(dvp, NFSPROC_LOOKUP, cnp->cn_proc, cnp->cn_cred);
nfsm_mtofh(dvp, *vpp);
if ((*vpp)->v_type != VDIR) {
vput(*vpp);
error = EEXIST;
}
m_freem(mrep);
}
FREE(cnp->cn_pnbuf, M_NAMEI);
vrele(dvp);
return (error);
}
#undef dvp
#undef vpp
#undef cnp
#undef vap
/*
* nfs remove directory call
*/
int
nfs_rmdir (ap)
struct vop_rmdir_args *ap;
#define dvp (ap->a_dvp)
#define vp (ap->a_vp)
#define cnp (ap->a_cnp)
{
register u_long *tl;
register caddr_t cp;
register long t2;
caddr_t bpos, dpos;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
if (dvp == vp) {
vrele(dvp);
vrele(dvp);
FREE(cnp->cn_pnbuf, M_NAMEI);
return (EINVAL);
}
nfsstats.rpccnt[NFSPROC_RMDIR]++;
nfsm_reqhead(dvp, NFSPROC_RMDIR,
NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(cnp->cn_namelen));
nfsm_fhtom(dvp);
nfsm_strtom(cnp->cn_nameptr, cnp->cn_namelen, NFS_MAXNAMLEN);
nfsm_request(dvp, NFSPROC_RMDIR, cnp->cn_proc, cnp->cn_cred);
nfsm_reqdone;
FREE(cnp->cn_pnbuf, M_NAMEI);
VTONFS(dvp)->n_flag |= NMODIFIED;
cache_purge(dvp);
cache_purge(vp);
vrele(vp);
vrele(dvp);
/*
* Kludge: Map ENOENT => 0 assuming that you have a reply to a retry.
*/
if (error == ENOENT)
error = 0;
return (error);
}
#undef dvp
#undef vp
#undef cnp
/*
* nfs readdir call
* Although cookie is defined as opaque, I translate it to/from net byte
* order so that it looks more sensible. This appears consistent with the
* Ultrix implementation of NFS.
*/
int
nfs_readdir (ap)
struct vop_readdir_args *ap;
#define vp (ap->a_vp)
#define uiop (ap->a_uio)
#define cred (ap->a_cred)
#define eofflagp (ap->a_eofflagp)
{
USES_VOP_GETATTR;
register struct nfsnode *np = VTONFS(vp);
int tresid, error;
struct vattr vattr;
if (vp->v_type != VDIR)
return (EPERM);
/*
* First, check for hit on the EOF offset cache
*/
if (uiop->uio_offset != 0 && uiop->uio_offset == np->n_direofoffset &&
(np->n_flag & NMODIFIED) == 0) {
if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NQNFS) {
if (NQNFS_CKCACHABLE(vp, NQL_READ)) {
*eofflagp = 1;
nfsstats.direofcache_hits++;
return (0);
}
} else if (VOP_GETATTR(vp, &vattr, cred, uiop->uio_procp) == 0 &&
np->n_mtime == vattr.va_mtime.tv_sec) {
*eofflagp = 1;
nfsstats.direofcache_hits++;
return (0);
}
}
/*
* Call nfs_bioread() to do the real work.
*/
tresid = uiop->uio_resid;
error = nfs_bioread(vp, uiop, 0, cred);
if (!error && uiop->uio_resid == tresid) {
*eofflagp = 1;
nfsstats.direofcache_misses++;
} else
*eofflagp = 0;
return (error);
}
#undef vp
#undef uiop
#undef cred
#undef eofflagp
/*
* Readdir rpc call.
* Called from below the buffer cache by nfs_doio().
*/
int
nfs_readdirrpc(vp, uiop, cred)
register struct vnode *vp;
struct uio *uiop;
struct ucred *cred;
{
register long len;
register struct readdir *dp;
register u_long *tl;
register caddr_t cp;
register long t1;
long tlen, lastlen;
caddr_t bpos, dpos, cp2;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
struct mbuf *md2;
caddr_t dpos2;
int siz;
int more_dirs = 1;
off_t off, savoff;
struct readdir *savdp;
struct nfsmount *nmp;
struct nfsnode *np = VTONFS(vp);
long tresid;
nmp = VFSTONFS(vp->v_mount);
tresid = uiop->uio_resid;
/*
* Loop around doing readdir rpc's of size uio_resid or nm_rsize,
* whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ.
* The stopping criteria is EOF or buffer full.
*/
while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) {
nfsstats.rpccnt[NFSPROC_READDIR]++;
nfsm_reqhead(vp, NFSPROC_READDIR,
NFSX_FH+2*NFSX_UNSIGNED);
nfsm_fhtom(vp);
nfsm_build(tl, u_long *, 2*NFSX_UNSIGNED);
*tl++ = txdr_unsigned(uiop->uio_offset);
*tl = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ?
nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1));
nfsm_request(vp, NFSPROC_READDIR, uiop->uio_procp, cred);
siz = 0;
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
more_dirs = fxdr_unsigned(int, *tl);
/* Save the position so that we can do nfsm_mtouio() later */
dpos2 = dpos;
md2 = md;
/* loop thru the dir entries, doctoring them to 4bsd form */
off = uiop->uio_offset;
#ifdef lint
dp = (struct readdir *)0;
#endif /* lint */
while (more_dirs && siz < uiop->uio_resid) {
savoff = off; /* Hold onto offset and dp */
savdp = dp;
nfsm_dissecton(tl, u_long *, 2*NFSX_UNSIGNED);
dp = (struct readdir *)tl;
dp->d_ino = fxdr_unsigned(u_long, *tl++);
len = fxdr_unsigned(int, *tl);
if (len <= 0 || len > NFS_MAXNAMLEN) {
error = EBADRPC;
m_freem(mrep);
goto nfsmout;
}
dp->d_namlen = (u_short)len;
nfsm_adv(len); /* Point past name */
tlen = nfsm_rndup(len);
/*
* This should not be necessary, but some servers have
* broken XDR such that these bytes are not null filled.
*/
if (tlen != len) {
*dpos = '\0'; /* Null-terminate */
nfsm_adv(tlen - len);
len = tlen;
}
nfsm_dissecton(tl, u_long *, 2*NFSX_UNSIGNED);
off = fxdr_unsigned(off_t, *tl);
*tl++ = 0; /* Ensures null termination of name */
more_dirs = fxdr_unsigned(int, *tl);
dp->d_reclen = len+4*NFSX_UNSIGNED;
siz += dp->d_reclen;
}
/*
* If at end of rpc data, get the eof boolean
*/
if (!more_dirs) {
nfsm_dissecton(tl, u_long *, NFSX_UNSIGNED);
more_dirs = (fxdr_unsigned(int, *tl) == 0);
/*
* If at EOF, cache directory offset
*/
if (!more_dirs)
np->n_direofoffset = off;
}
/*
* If there is too much to fit in the data buffer, use savoff and
* savdp to trim off the last record.
* --> we are not at eof
*/
if (siz > uiop->uio_resid) {
off = savoff;
siz -= dp->d_reclen;
dp = savdp;
more_dirs = 0; /* Paranoia */
}
if (siz > 0) {
lastlen = dp->d_reclen;
md = md2;
dpos = dpos2;
nfsm_mtouio(uiop, siz);
uiop->uio_offset = off;
} else
more_dirs = 0; /* Ugh, never happens, but in case.. */
m_freem(mrep);
}
/*
* Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ
* by increasing d_reclen for the last record.
*/
if (uiop->uio_resid < tresid) {
len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1);
if (len > 0) {
dp = (struct readdir *)
(uiop->uio_iov->iov_base - lastlen);
dp->d_reclen += len;
uiop->uio_iov->iov_base += len;
uiop->uio_iov->iov_len -= len;
uiop->uio_resid -= len;
}
}
nfsmout:
return (error);
}
/*
* Nqnfs readdir_and_lookup RPC. Used in place of nfs_readdirrpc() when
* the "rdirlook" mount option is specified.
*/
int
nfs_readdirlookrpc(vp, uiop, cred)
struct vnode *vp;
register struct uio *uiop;
struct ucred *cred;
{
register int len;
register struct readdir *dp;
register u_long *tl;
register caddr_t cp;
register long t1;
caddr_t bpos, dpos, cp2;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
struct nameidata nami, *ndp = &nami;
struct componentname *cnp = &ndp->ni_cnd;
off_t off, endoff;
time_t reqtime, ltime;
struct nfsmount *nmp;
struct nfsnode *np, *tp;
struct vnode *newvp;
nfsv2fh_t *fhp;
u_long fileno;
u_quad_t frev;
int error = 0, tlen, more_dirs = 1, tresid, doit, bigenough, i;
int cachable;
if (uiop->uio_iovcnt != 1)
panic("nfs rdirlook");
nmp = VFSTONFS(vp->v_mount);
tresid = uiop->uio_resid;
ndp->ni_dvp = vp;
newvp = NULLVP;
/*
* Loop around doing readdir rpc's of size uio_resid or nm_rsize,
* whichever is smaller, truncated to a multiple of NFS_DIRBLKSIZ.
* The stopping criteria is EOF or buffer full.
*/
while (more_dirs && uiop->uio_resid >= NFS_DIRBLKSIZ) {
nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]++;
nfsm_reqhead(vp, NQNFSPROC_READDIRLOOK,
NFSX_FH+3*NFSX_UNSIGNED);
nfsm_fhtom(vp);
nfsm_build(tl, u_long *, 3*NFSX_UNSIGNED);
*tl++ = txdr_unsigned(uiop->uio_offset);
*tl++ = txdr_unsigned(((uiop->uio_resid > nmp->nm_rsize) ?
nmp->nm_rsize : uiop->uio_resid) & ~(NFS_DIRBLKSIZ-1));
*tl = txdr_unsigned(nmp->nm_leaseterm);
reqtime = time.tv_sec;
nfsm_request(vp, NQNFSPROC_READDIRLOOK, uiop->uio_procp, cred);
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
more_dirs = fxdr_unsigned(int, *tl);
/* loop thru the dir entries, doctoring them to 4bsd form */
off = uiop->uio_offset;
bigenough = 1;
while (more_dirs && bigenough) {
doit = 1;
nfsm_dissect(tl, u_long *, 4*NFSX_UNSIGNED);
cachable = fxdr_unsigned(int, *tl++);
ltime = reqtime + fxdr_unsigned(int, *tl++);
fxdr_hyper(tl, &frev);
nfsm_dissect(fhp, nfsv2fh_t *, NFSX_FH);
if (!bcmp(VTONFS(vp)->n_fh.fh_bytes, (caddr_t)fhp, NFSX_FH)) {
VREF(vp);
newvp = vp;
np = VTONFS(vp);
} else {
if (error = nfs_nget(vp->v_mount, fhp, &np))
doit = 0;
newvp = NFSTOV(np);
}
if (error = nfs_loadattrcache(&newvp, &md, &dpos,
(struct vattr *)0))
doit = 0;
nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED);
fileno = fxdr_unsigned(u_long, *tl++);
len = fxdr_unsigned(int, *tl);
if (len <= 0 || len > NFS_MAXNAMLEN) {
error = EBADRPC;
m_freem(mrep);
goto nfsmout;
}
tlen = (len + 4) & ~0x3;
if ((tlen + DIRHDSIZ) > uiop->uio_resid)
bigenough = 0;
if (bigenough && doit) {
dp = (struct readdir *)uiop->uio_iov->iov_base;
dp->d_ino = fileno;
dp->d_namlen = len;
dp->d_reclen = tlen + DIRHDSIZ;
uiop->uio_resid -= DIRHDSIZ;
uiop->uio_iov->iov_base += DIRHDSIZ;
uiop->uio_iov->iov_len -= DIRHDSIZ;
cnp->cn_nameptr = uiop->uio_iov->iov_base;
cnp->cn_namelen = len;
ndp->ni_vp = newvp;
nfsm_mtouio(uiop, len);
cp = uiop->uio_iov->iov_base;
tlen -= len;
for (i = 0; i < tlen; i++)
*cp++ = '\0';
uiop->uio_iov->iov_base += tlen;
uiop->uio_iov->iov_len -= tlen;
uiop->uio_resid -= tlen;
cnp->cn_hash = 0;
for (cp = cnp->cn_nameptr, i = 1; i <= len; i++, cp++)
cnp->cn_hash += (unsigned char)*cp * i;
if (ltime > time.tv_sec) {
if (np->n_tnext) {
if (np->n_tnext == (struct nfsnode *)nmp)
nmp->nm_tprev = np->n_tprev;
else
np->n_tnext->n_tprev = np->n_tprev;
if (np->n_tprev == (struct nfsnode *)nmp)
nmp->nm_tnext = np->n_tnext;
else
np->n_tprev->n_tnext = np->n_tnext;
} else
np->n_flag &= ~NQNFSWRITE;
if (cachable)
np->n_flag &= ~NQNFSNONCACHE;
else
np->n_flag |= NQNFSNONCACHE;
np->n_expiry = ltime;
np->n_lrev = frev;
tp = nmp->nm_tprev;
while (tp != (struct nfsnode *)nmp && tp->n_expiry > np->n_expiry)
tp = tp->n_tprev;
if (tp == (struct nfsnode *)nmp) {
np->n_tnext = nmp->nm_tnext;
nmp->nm_tnext = np;
} else {
np->n_tnext = tp->n_tnext;
tp->n_tnext = np;
}
np->n_tprev = tp;
if (np->n_tnext == (struct nfsnode *)nmp)
nmp->nm_tprev = np;
else
np->n_tnext->n_tprev = np;
cache_enter(ndp->ni_dvp, ndp->ni_vp, cnp);
}
} else {
nfsm_adv(nfsm_rndup(len));
}
if (newvp != NULLVP) {
vrele(newvp);
newvp = NULLVP;
}
nfsm_dissect(tl, u_long *, 2*NFSX_UNSIGNED);
if (bigenough)
endoff = off = fxdr_unsigned(off_t, *tl++);
else
endoff = fxdr_unsigned(off_t, *tl++);
more_dirs = fxdr_unsigned(int, *tl);
}
/*
* If at end of rpc data, get the eof boolean
*/
if (!more_dirs) {
nfsm_dissect(tl, u_long *, NFSX_UNSIGNED);
more_dirs = (fxdr_unsigned(int, *tl) == 0);
/*
* If at EOF, cache directory offset
*/
if (!more_dirs)
VTONFS(vp)->n_direofoffset = endoff;
}
if (uiop->uio_resid < tresid)
uiop->uio_offset = off;
else
more_dirs = 0;
m_freem(mrep);
}
/*
* Fill last record, iff any, out to a multiple of NFS_DIRBLKSIZ
* by increasing d_reclen for the last record.
*/
if (uiop->uio_resid < tresid) {
len = uiop->uio_resid & (NFS_DIRBLKSIZ - 1);
if (len > 0) {
dp->d_reclen += len;
uiop->uio_iov->iov_base += len;
uiop->uio_iov->iov_len -= len;
uiop->uio_resid -= len;
}
}
nfsmout:
if (newvp != NULLVP)
vrele(newvp);
return (error);
}
static char hextoasc[] = "0123456789abcdef";
/*
* Silly rename. To make the NFS filesystem that is stateless look a little
* more like the "ufs" a remove of an active vnode is translated to a rename
* to a funny looking filename that is removed by nfs_inactive on the
* nfsnode. There is the potential for another process on a different client
* to create the same funny name between the nfs_lookitup() fails and the
* nfs_rename() completes, but...
*/
int
nfs_sillyrename(dvp, vp, cnp)
struct vnode *dvp, *vp;
struct componentname *cnp;
{
register struct nfsnode *np;
register struct sillyrename *sp;
int error;
short pid;
cache_purge(dvp);
np = VTONFS(vp);
#ifdef SILLYSEPARATE
MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename),
M_NFSREQ, M_WAITOK);
#else
sp = &np->n_silly;
#endif
sp->s_cred = crdup(cnp->cn_cred);
sp->s_dvp = dvp;
VREF(dvp);
/* Fudge together a funny name */
pid = cnp->cn_proc->p_pid;
bcopy(".nfsAxxxx4.4", sp->s_name, 13);
sp->s_namlen = 12;
sp->s_name[8] = hextoasc[pid & 0xf];
sp->s_name[7] = hextoasc[(pid >> 4) & 0xf];
sp->s_name[6] = hextoasc[(pid >> 8) & 0xf];
sp->s_name[5] = hextoasc[(pid >> 12) & 0xf];
/* Try lookitups until we get one that isn't there */
while (nfs_lookitup(sp, (nfsv2fh_t *)0, cnp->cn_proc) == 0) {
sp->s_name[4]++;
if (sp->s_name[4] > 'z') {
error = EINVAL;
goto bad;
}
}
if (error = nfs_renameit(dvp, cnp, sp))
goto bad;
nfs_lookitup(sp, &np->n_fh, cnp->cn_proc);
np->n_sillyrename = sp;
return (0);
bad:
vrele(sp->s_dvp);
crfree(sp->s_cred);
#ifdef SILLYSEPARATE
free((caddr_t)sp, M_NFSREQ);
#endif
return (error);
}
/*
* Look up a file name for silly rename stuff.
* Just like nfs_lookup() except that it doesn't load returned values
* into the nfsnode table.
* If fhp != NULL it copies the returned file handle out
*/
int
nfs_lookitup(sp, fhp, procp)
register struct sillyrename *sp;
nfsv2fh_t *fhp;
struct proc *procp;
{
register struct vnode *vp = sp->s_dvp;
register u_long *tl;
register caddr_t cp;
register long t1, t2;
caddr_t bpos, dpos, cp2;
u_long xid;
int error = 0;
struct mbuf *mreq, *mrep, *md, *mb, *mb2;
long len;
nfsstats.rpccnt[NFSPROC_LOOKUP]++;
len = sp->s_namlen;
nfsm_reqhead(vp, NFSPROC_LOOKUP, NFSX_FH+NFSX_UNSIGNED+nfsm_rndup(len));
nfsm_fhtom(vp);
nfsm_strtom(sp->s_name, len, NFS_MAXNAMLEN);
nfsm_request(vp, NFSPROC_LOOKUP, procp, sp->s_cred);
if (fhp != NULL) {
nfsm_dissect(cp, caddr_t, NFSX_FH);
bcopy(cp, (caddr_t)fhp, NFSX_FH);
}
nfsm_reqdone;
return (error);
}
/*
* Kludge City..
* - make nfs_bmap() essentially a no-op that does no translation
* - do nfs_strategy() by faking physical I/O with nfs_readrpc/nfs_writerpc
* after mapping the physical addresses into Kernel Virtual space in the
* nfsiobuf area.
* (Maybe I could use the process's page mapping, but I was concerned that
* Kernel Write might not be enabled and also figured copyout() would do
* a lot more work than bcopy() and also it currently happens in the
* context of the swapper process (2).
*/
int
nfs_bmap (ap)
struct vop_bmap_args *ap;
#define vp (ap->a_vp)
#define bn (ap->a_bn)
#define vpp (ap->a_vpp)
#define bnp (ap->a_bnp)
{
if (vpp != NULL)
*vpp = vp;
if (bnp != NULL)
*bnp = bn * btodb(vp->v_mount->mnt_stat.f_iosize);
return (0);
}
#undef vp
#undef bn
#undef vpp
#undef bnp
/*
* Strategy routine for phys. i/o
* If the biod's are running, queue a request
* otherwise just call nfs_doio() to get it done
*/
int
nfs_strategy (ap)
struct vop_strategy_args *ap;
#define bp (ap->a_bp)
{
register struct buf *dp;
register int i;
int error = 0;
int fnd = 0;
/*
* Set b_proc. It seems a bit silly to do it here, but since bread()
* doesn't set it, I will.
* Set b_proc == NULL for asynchronous ops, since these may still
* be hanging about after the process terminates.
*/
if ((bp->b_flags & B_PHYS) == 0) {
if (bp->b_flags & B_ASYNC)
bp->b_proc = (struct proc *)0;
else
bp->b_proc = curproc;
}
/*
* If the op is asynchronous and an i/o daemon is waiting
* queue the request, wake it up and wait for completion
* otherwise just do it ourselves.
*/
if ((bp->b_flags & B_ASYNC) == 0 || nfs_numasync == 0)
return (nfs_doio(bp));
for (i = 0; i < NFS_MAXASYNCDAEMON; i++) {
if (nfs_iodwant[i]) {
dp = &nfs_bqueue;
if (dp->b_actf == NULL) {
dp->b_actl = bp;
bp->b_actf = dp;
} else {
dp->b_actf->b_actl = bp;
bp->b_actf = dp->b_actf;
}
dp->b_actf = bp;
bp->b_actl = dp;
fnd++;
wakeup((caddr_t)&nfs_iodwant[i]);
break;
}
}
if (!fnd)
error = nfs_doio(bp);
return (error);
}
#undef bp
/*
* Fun and games with i/o
* Essentially play ubasetup() and disk interrupt service routine by
* mapping the data buffer into kernel virtual space and doing the
* nfs read or write rpc's from it.
* If the nfsiod's are not running, this is just called from nfs_strategy(),
* otherwise it is called by the nfsiods to do what would normally be
* partially disk interrupt driven.
*/
int
nfs_doio(bp)
register struct buf *bp;
{
register struct uio *uiop;
register struct vnode *vp;
struct nfsnode *np;
struct ucred *cr;
int error;
struct uio uio;
struct iovec io;
vp = bp->b_vp;
np = VTONFS(vp);
uiop = &uio;
uiop->uio_iov = &io;
uiop->uio_iovcnt = 1;
uiop->uio_segflg = UIO_SYSSPACE;
uiop->uio_procp = bp->b_proc;
/*
* For phys i/o, map the b_addr into kernel virtual space using
* the Nfsiomap pte's
* Also, add a temporary b_rcred for reading using the process's uid
* and a guess at a group
*/
if (bp->b_flags & B_PHYS) {
if (bp->b_flags & B_DIRTY)
uiop->uio_procp = pageproc;
cr = crcopy(uiop->uio_procp->p_ucred);
/* mapping was already done by vmapbuf */
io.iov_base = bp->b_un.b_addr;
/*
* And do the i/o rpc
*/
io.iov_len = uiop->uio_resid = bp->b_bcount;
uiop->uio_offset = bp->b_blkno * DEV_BSIZE;
if (bp->b_flags & B_READ) {
uiop->uio_rw = UIO_READ;
nfsstats.read_physios++;
bp->b_error = error = nfs_readrpc(vp, uiop, cr);
(void) vnode_pager_uncache(vp);
} else {
uiop->uio_rw = UIO_WRITE;
nfsstats.write_physios++;
bp->b_error = error = nfs_writerpc(vp, uiop, cr);
}
/*
* Finally, release pte's used by physical i/o
*/
crfree(cr);
} else {
if (bp->b_flags & B_READ) {
io.iov_len = uiop->uio_resid = bp->b_bcount;
io.iov_base = bp->b_un.b_addr;
uiop->uio_rw = UIO_READ;
switch (vp->v_type) {
case VREG:
uiop->uio_offset = bp->b_blkno * DEV_BSIZE;
nfsstats.read_bios++;
error = nfs_readrpc(vp, uiop, bp->b_rcred);
break;
case VLNK:
uiop->uio_offset = 0;
nfsstats.readlink_bios++;
error = nfs_readlinkrpc(vp, uiop, bp->b_rcred);
break;
case VDIR:
uiop->uio_offset = bp->b_lblkno;
nfsstats.readdir_bios++;
if (VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_RDIRALOOK)
error = nfs_readdirlookrpc(vp, uiop, bp->b_rcred);
else
error = nfs_readdirrpc(vp, uiop, bp->b_rcred);
/*
* Save offset cookie in b_blkno.
*/
bp->b_blkno = uiop->uio_offset;
break;
};
bp->b_error = error;
} else {
io.iov_len = uiop->uio_resid = bp->b_dirtyend
- bp->b_dirtyoff;
uiop->uio_offset = (bp->b_blkno * DEV_BSIZE)
+ bp->b_dirtyoff;
io.iov_base = bp->b_un.b_addr + bp->b_dirtyoff;
uiop->uio_rw = UIO_WRITE;
nfsstats.write_bios++;
bp->b_error = error = nfs_writerpc(vp, uiop,
bp->b_wcred);
if (error) {
np->n_error = error;
np->n_flag |= NWRITEERR;
}
bp->b_dirtyoff = bp->b_dirtyend = 0;
}
}
if (error)
bp->b_flags |= B_ERROR;
bp->b_resid = uiop->uio_resid;
biodone(bp);
return (error);
}
/*
* Mmap a file
*
* NB Currently unsupported.
*/
/* ARGSUSED */
int
nfs_mmap (ap)
struct vop_mmap_args *ap;
#define vp (ap->a_vp)
#define fflags (ap->a_fflags)
#define cred (ap->a_cred)
#define p (ap->a_p)
{
return (EINVAL);
}
#undef vp
#undef fflags
#undef cred
#undef p
/*
* Flush all the blocks associated with a vnode.
* Walk through the buffer pool and push any dirty pages
* associated with the vnode.
*/
/* ARGSUSED */
int
nfs_fsync (ap)
struct vop_fsync_args *ap;
#define vp (ap->a_vp)
#define fflags (ap->a_fflags)
#define cred (ap->a_cred)
#define waitfor (ap->a_waitfor)
#define p (ap->a_p)
{
register struct nfsnode *np = VTONFS(vp);
int error = 0;
if (np->n_flag & NMODIFIED) {
np->n_flag &= ~NMODIFIED;
vflushbuf(vp, waitfor == MNT_WAIT ? B_SYNC : 0);
}
if (!error && (np->n_flag & NWRITEERR))
error = np->n_error;
return (error);
}
#undef vp
#undef fflags
#undef cred
#undef waitfor
#undef p
/*
* NFS advisory byte-level locks.
* Currently unsupported.
*/
int
nfs_advlock (ap)
struct vop_advlock_args *ap;
#define vp (ap->a_vp)
#define id (ap->a_id)
#define op (ap->a_op)
#define fl (ap->a_fl)
#define flags (ap->a_flags)
{
return (EOPNOTSUPP);
}
#undef vp
#undef id
#undef op
#undef fl
#undef flags
/*
* Print out the contents of an nfsnode.
*/
int
nfs_print (ap)
struct vop_print_args *ap;
#define vp (ap->a_vp)
{
register struct nfsnode *np = VTONFS(vp);
printf("tag VT_NFS, fileid %d fsid 0x%x",
np->n_vattr.va_fileid, np->n_vattr.va_fsid);
#ifdef FIFO
if (vp->v_type == VFIFO)
fifo_printinfo(vp);
#endif /* FIFO */
printf("\n");
}
#undef vp
/*
* NFS directory offset lookup.
* Currently unsupported.
*/
int
nfs_blkatoff (ap)
struct vop_blkatoff_args *ap;
#define vp (ap->a_vp)
#define offset (ap->a_offset)
#define res (ap->a_res)
#define bpp (ap->a_bpp)
{
return (EOPNOTSUPP);
}
#undef vp
#undef offset
#undef res
#undef bpp
/*
* NFS flat namespace lookup.
* Currently unsupported.
*/
int
nfs_vget (ap)
struct vop_vget_args *ap;
#define mp (ap->a_mp)
#define ino (ap->a_ino)
#define vpp (ap->a_vpp)
{
return (EOPNOTSUPP);
}
#undef mp
#undef ino
#undef vpp
/*
* NFS flat namespace allocation.
* Currently unsupported.
*/
int
nfs_valloc (ap)
struct vop_valloc_args *ap;
#define pvp (ap->a_pvp)
#define mode (ap->a_mode)
#define cred (ap->a_cred)
#define vpp (ap->a_vpp)
{
return (EOPNOTSUPP);
}
#undef pvp
#undef mode
#undef cred
#undef vpp
/*
* NFS flat namespace free.
* Currently unsupported.
*/
int
nfs_vfree (ap)
struct vop_vfree_args *ap;
#define pvp (ap->a_pvp)
#define ino (ap->a_ino)
#define mode (ap->a_mode)
{
return (EOPNOTSUPP);
}
#undef pvp
#undef ino
#undef mode
/*
* NFS file truncation.
*/
int
nfs_truncate (ap)
struct vop_truncate_args *ap;
#define vp (ap->a_vp)
#define length (ap->a_length)
#define flags (ap->a_flags)
#define cred (ap->a_cred)
{
/* Use nfs_setattr */
printf("nfs_truncate: need to implement!!");
return (EOPNOTSUPP);
}
#undef vp
#undef length
#undef flags
#undef cred
/*
* NFS update.
*/
int
nfs_update (ap)
struct vop_update_args *ap;
#define vp (ap->a_vp)
#define ta (ap->a_ta)
#define tm (ap->a_tm)
#define waitfor (ap->a_waitfor)
{
/* Use nfs_setattr */
printf("nfs_update: need to implement!!");
return (EOPNOTSUPP);
}
#undef vp
#undef ta
#undef tm
#undef waitfor
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.