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Use function pointers to remove the depenancy cross dependancy on nfs4

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and the nfs3 client.  Also fix some bugs that happen to be causing crashes
in both v3 and v4 introduced by the v4 import.

Submitted by: Jim Rees <rees@umich.edu>
Approved by: re
This commit is contained in:
Alfred Perlstein 2003-11-22 02:21:49 +00:00
parent 1647bdb853
commit 90abe7f294
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=122953
7 changed files with 46 additions and 107 deletions
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89
sys/nfs4client/nfs4_vfsops.c
View File

@ -144,89 +144,20 @@ static struct vfsops nfs_vfsops = {
};
VFS_SET(nfs_vfsops, nfs4, VFCF_NETWORK);
static struct nfs_rpcops nfs4_rpcops = {
nfs4_readrpc,
nfs4_writerpc,
nfs4_writebp,
nfs4_readlinkrpc,
nfs4_invaldir,
nfs4_commit,
};
/* So that loader and kldload(2) can find us, wherever we are.. */
MODULE_VERSION(nfs4, 1);
void nfsargs_ntoh(struct nfs_args *);
#ifdef NFS4DISKLESS
/*
* This structure must be filled in by a primary bootstrap or bootstrap
* server for a diskless/dataless machine. It is initialized below just
* to ensure that it is allocated to initialized data (.data not .bss).
*/
struct nfs_diskless nfs_diskless = { { { 0 } } };
struct nfsv3_diskless nfsv3_diskless = { { { 0 } } };
int nfs_diskless_valid = 0;
SYSCTL_INT(_vfs_nfs4, OID_AUTO, diskless_valid, CTLFLAG_RD,
&nfs_diskless_valid, 0, "");
SYSCTL_STRING(_vfs_nfs4, OID_AUTO, diskless_rootpath, CTLFLAG_RD,
nfsv3_diskless.root_hostnam, 0, "");
SYSCTL_OPAQUE(_vfs_nfs4, OID_AUTO, diskless_rootaddr, CTLFLAG_RD,
&nfsv3_diskless.root_saddr, sizeof nfsv3_diskless.root_saddr,
"%Ssockaddr_in", "");
SYSCTL_STRING(_vfs_nfs4, OID_AUTO, diskless_swappath, CTLFLAG_RD,
nfsv3_diskless.swap_hostnam, 0, "");
SYSCTL_OPAQUE(_vfs_nfs4, OID_AUTO, diskless_swapaddr, CTLFLAG_RD,
&nfsv3_diskless.swap_saddr, sizeof nfsv3_diskless.swap_saddr,
"%Ssockaddr_in","");
static int nfs_mountdiskless(char *, char *, int,
struct sockaddr_in *, struct nfs_args *,
struct thread *, struct vnode **, struct mount **);
static void nfs_convert_diskless(void);
static void nfs_convert_oargs(struct nfs_args *args,
struct onfs_args *oargs);
static void
nfs_convert_oargs(struct nfs_args *args, struct onfs_args *oargs)
{
args->version = NFS_ARGSVERSION;
args->addr = oargs->addr;
args->addrlen = oargs->addrlen;
args->sotype = oargs->sotype;
args->proto = oargs->proto;
args->fh = oargs->fh;
args->fhsize = oargs->fhsize;
args->flags = oargs->flags;
args->wsize = oargs->wsize;
args->rsize = oargs->rsize;
args->readdirsize = oargs->readdirsize;
args->timeo = oargs->timeo;
args->retrans = oargs->retrans;
args->maxgrouplist = oargs->maxgrouplist;
args->readahead = oargs->readahead;
args->deadthresh = oargs->deadthresh;
args->hostname = oargs->hostname;
}
static void
nfs_convert_diskless(void)
{
bcopy(&nfs_diskless.myif, &nfsv3_diskless.myif,
sizeof(struct ifaliasreq));
bcopy(&nfs_diskless.mygateway, &nfsv3_diskless.mygateway,
sizeof(struct sockaddr_in));
nfs_convert_oargs(&nfsv3_diskless.root_args,&nfs_diskless.root_args);
nfsv3_diskless.root_fhsize = NFSX_V2FH;
bcopy(nfs_diskless.root_fh, nfsv3_diskless.root_fh, NFSX_V2FH);
bcopy(&nfs_diskless.root_saddr,&nfsv3_diskless.root_saddr,
sizeof(struct sockaddr_in));
bcopy(nfs_diskless.root_hostnam, nfsv3_diskless.root_hostnam, MNAMELEN);
nfsv3_diskless.root_time = nfs_diskless.root_time;
bcopy(nfs_diskless.my_hostnam, nfsv3_diskless.my_hostnam,
MAXHOSTNAMELEN);
nfs_diskless_valid = 3;
}
#endif
int
nfs4_init(struct vfsconf *vfsp)
{
@ -632,10 +563,10 @@ mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
/* Set up the sockets and per-host congestion */
nmp->nm_sotype = argp->sotype;
nmp->nm_soproto = argp->proto;
nmp->nm_rpcops = &nfs4_rpcops;
/* XXX */
mp->mnt_stat.f_iosize = PAGE_SIZE;
/* XXX - this is to make some other code work. Sort of ugly. */
argp->flags |= (NFSMNT_NFSV3 | NFSMNT_NFSV4);
nfs_decode_args(nmp, argp);

14
sys/nfsclient/nfs.h
View File

@ -214,6 +214,20 @@ extern TAILQ_HEAD(nfs_reqq, nfsreq) nfs_reqq;
#define R_MUSTRESEND 0x40 /* Must resend request */
#define R_GETONEREP 0x80 /* Probe for one reply only */
/*
* Pointers to ops that differ from v3 to v4
*/
struct nfs_rpcops {
int (*nr_readrpc)(struct vnode *vp, struct uio *uiop, struct ucred *cred);
int (*nr_writerpc)(struct vnode *vp, struct uio *uiop, struct ucred *cred,
int *iomode, int *must_commit);
int (*nr_writebp)(struct buf *bp, int force, struct thread *td);
int (*nr_readlinkrpc)(struct vnode *vp, struct uio *uiop, struct ucred *cred);
void (*nr_invaldir)(struct vnode *vp);
int (*nr_commit)(struct vnode *vp, u_quad_t offset, int cnt,
struct ucred *cred, struct thread *td);
};
/*
* Defines for WebNFS
*/

29
sys/nfsclient/nfs_bio.c
View File

@ -187,10 +187,7 @@ nfs_getpages(struct vop_getpages_args *ap)
uio.uio_rw = UIO_READ;
uio.uio_td = td;
if ((nmp->nm_flag & NFSMNT_NFSV4) != 0)
error = nfs4_readrpc(vp, &uio, cred);
else
error = nfs_readrpc(vp, &uio, cred);
error = (nmp->nm_rpcops->nr_readrpc)(vp, &uio, cred);
pmap_qremove(kva, npages);
relpbuf(bp, &nfs_pbuf_freecnt);
@ -352,10 +349,7 @@ nfs_putpages(struct vop_putpages_args *ap)
else
iomode = NFSV3WRITE_FILESYNC;
if ((nmp->nm_flag & NFSMNT_NFSV4) != 0)
error = nfs4_writerpc(vp, &uio, cred, &iomode, &must_commit);
else
error = nfs_writerpc(vp, &uio, cred, &iomode, &must_commit);
error = (nmp->nm_rpcops->nr_writerpc)(vp, &uio, cred, &iomode, &must_commit);
pmap_qremove(kva, npages);
relpbuf(bp, &nfs_pbuf_freecnt);
@ -428,7 +422,7 @@ nfs_bioread(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)
if (vp->v_type != VREG) {
if (vp->v_type != VDIR)
panic("nfs: bioread, not dir");
nfs_invaldir(vp);
(nmp->nm_rpcops->nr_invaldir)(vp);
error = nfs_vinvalbuf(vp, V_SAVE, cred, td, 1);
if (error)
return (error);
@ -444,7 +438,7 @@ nfs_bioread(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)
return (error);
if (np->n_mtime != vattr.va_mtime.tv_sec) {
if (vp->v_type == VDIR)
nfs_invaldir(vp);
(nmp->nm_rpcops->nr_invaldir)(vp);
error = nfs_vinvalbuf(vp, V_SAVE, cred, td, 1);
if (error)
return (error);
@ -592,7 +586,7 @@ nfs_bioread(struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)
}
while (error == NFSERR_BAD_COOKIE) {
printf("got bad cookie vp %p bp %p\n", vp, bp);
nfs_invaldir(vp);
(nmp->nm_rpcops->nr_invaldir)(vp);
error = nfs_vinvalbuf(vp, 0, cred, td, 1);
/*
* Yuck! The directory has been modified on the
@ -1022,10 +1016,7 @@ nfs_write(struct vop_write_args *ap)
break;
} else if ((n + on) == biosize) {
bp->b_flags |= B_ASYNC;
if ((nmp->nm_flag & NFSMNT_NFSV4) != 0)
(void)nfs4_writebp(bp, 0, 0);
else
(void)nfs_writebp(bp, 0, 0);
(void) (nmp->nm_rpcops->nr_writebp)(bp, 0, 0);
} else {
bdwrite(bp);
}
@ -1330,7 +1321,7 @@ nfs_doio(struct buf *bp, struct ucred *cr, struct thread *td)
case VREG:
uiop->uio_offset = ((off_t)bp->b_blkno) * DEV_BSIZE;
nfsstats.read_bios++;
error = nfs_readrpc(vp, uiop, cr);
error = (nmp->nm_rpcops->nr_readrpc)(vp, uiop, cr);
if (!error) {
if (uiop->uio_resid) {
@ -1363,7 +1354,7 @@ nfs_doio(struct buf *bp, struct ucred *cr, struct thread *td)
case VLNK:
uiop->uio_offset = (off_t)0;
nfsstats.readlink_bios++;
error = nfs_readlinkrpc(vp, uiop, cr);
error = (nmp->nm_rpcops->nr_readlinkrpc)(vp, uiop, cr);
break;
case VDIR:
nfsstats.readdir_bios++;
@ -1404,7 +1395,7 @@ nfs_doio(struct buf *bp, struct ucred *cr, struct thread *td)
off = ((u_quad_t)bp->b_blkno) * DEV_BSIZE + bp->b_dirtyoff;
bp->b_flags |= B_WRITEINPROG;
retv = nfs_commit(
retv = (nmp->nm_rpcops->nr_commit)(
bp->b_vp, off, bp->b_dirtyend-bp->b_dirtyoff,
bp->b_wcred, td);
bp->b_flags &= ~B_WRITEINPROG;
@ -1442,7 +1433,7 @@ nfs_doio(struct buf *bp, struct ucred *cr, struct thread *td)
iomode = NFSV3WRITE_FILESYNC;
bp->b_flags |= B_WRITEINPROG;
error = nfs_writerpc(vp, uiop, cr, &iomode, &must_commit);
error = (nmp->nm_rpcops->nr_writerpc)(vp, uiop, cr, &iomode, &must_commit);
/*
* When setting B_NEEDCOMMIT also set B_CLUSTEROK to try

4
sys/nfsclient/nfs_subs.c
View File

@ -763,10 +763,6 @@ nfs_invaldir(struct vnode *vp)
if (vp->v_type != VDIR)
panic("nfs: invaldir not dir");
#endif
if ((VFSTONFS(vp->v_mount)->nm_flag & NFSMNT_NFSV4) != 0) {
nfs4_invaldir(vp);
return;
}
np->n_direofoffset = 0;
np->n_cookieverf.nfsuquad[0] = 0;
np->n_cookieverf.nfsuquad[1] = 0;

10
sys/nfsclient/nfs_vfsops.c
View File

@ -124,6 +124,15 @@ VFS_SET(nfs_vfsops, nfs, VFCF_NETWORK);
/* So that loader and kldload(2) can find us, wherever we are.. */
MODULE_VERSION(nfs, 1);
static struct nfs_rpcops nfs_rpcops = {
nfs_readrpc,
nfs_writerpc,
nfs_writebp,
nfs_readlinkrpc,
nfs_invaldir,
nfs_commit,
};
/*
* This structure must be filled in by a primary bootstrap or bootstrap
* server for a diskless/dataless machine. It is initialized below just
@ -790,6 +799,7 @@ mountnfs(struct nfs_args *argp, struct mount *mp, struct sockaddr *nam,
/* Set up the sockets and per-host congestion */
nmp->nm_sotype = argp->sotype;
nmp->nm_soproto = argp->proto;
nmp->nm_rpcops = &nfs_rpcops;
nfs_decode_args(nmp, argp);

1
sys/nfsclient/nfsmount.h
View File

@ -80,6 +80,7 @@ struct nfsmount {
short nm_bufqwant; /* process wants to add to the queue */
int nm_bufqiods; /* number of iods processing queue */
u_int64_t nm_maxfilesize; /* maximum file size */
struct nfs_rpcops *nm_rpcops;
/* NFSv4 */
uint64_t nm_clientid;

6
sys/nfsclient/nfsnode.h
View File

@ -128,11 +128,7 @@ struct nfsnode {
struct lock n_rslock;
struct nfs4_fctx n_rfc;
struct nfs4_fctx n_wfc;
/*
* The last component name is needed for the NFSv4 OPEN
* operation.
*/
u_char *n_name;
u_char *n_name; /* leaf name, for v4 OPEN op */
uint32_t n_namelen;
};