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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-22 15:55:50 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-22 15:55:50 -0400
commit7e0338c0de18c50f09aea1fbef45110cf7d64a3c (patch)
tree30a935c1f6eee7125a9fbb802a33292b1f7268fa /fs/nfsd
parentdf36b439c5fedefe013d4449cb6a50d15e2f4d70 (diff)
parent47fcb03fefee2501e79176932a4184fc24d6f8ec (diff)
Merge branch 'for-2.6.31' of git://fieldses.org/git/linux-nfsd
* 'for-2.6.31' of git://fieldses.org/git/linux-nfsd: (60 commits) SUNRPC: Fix the TCP server's send buffer accounting nfsd41: Backchannel: minorversion support for the back channel nfsd41: Backchannel: cleanup nfs4.0 callback encode routines nfsd41: Remove ip address collision detection case nfsd: optimise the starting of zero threads when none are running. nfsd: don't take nfsd_mutex twice when setting number of threads. nfsd41: sanity check client drc maxreqs nfsd41: move channel attributes from nfsd4_session to a nfsd4_channel_attr struct NFS: kill off complicated macro 'PROC' sunrpc: potential memory leak in function rdma_read_xdr nfsd: minor nfsd_vfs_write cleanup nfsd: Pull write-gathering code out of nfsd_vfs_write nfsd: track last inode only in use_wgather case sunrpc: align cache_clean work's timer nfsd: Use write gathering only with NFSv2 NFSv4: kill off complicated macro 'PROC' NFSv4: do exact check about attribute specified knfsd: remove unreported filehandle stats counters knfsd: fix reply cache memory corruption knfsd: reply cache cleanups ...
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/export.c13
-rw-r--r--fs/nfsd/nfs3proc.c237
-rw-r--r--fs/nfsd/nfs3xdr.c1
-rw-r--r--fs/nfsd/nfs4callback.c247
-rw-r--r--fs/nfsd/nfs4proc.c129
-rw-r--r--fs/nfsd/nfs4state.c171
-rw-r--r--fs/nfsd/nfs4xdr.c296
-rw-r--r--fs/nfsd/nfscache.c33
-rw-r--r--fs/nfsd/nfsctl.c294
-rw-r--r--fs/nfsd/nfsfh.c6
-rw-r--r--fs/nfsd/nfsproc.c198
-rw-r--r--fs/nfsd/nfssvc.c12
-rw-r--r--fs/nfsd/vfs.c93
13 files changed, 1135 insertions, 595 deletions
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 8b1f8efb4690..b92a27629fb7 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -464,16 +464,11 @@ static int secinfo_parse(char **mesg, char *buf, struct svc_export *exp)
464 if (err) 464 if (err)
465 return err; 465 return err;
466 /* 466 /*
467 * Just a quick sanity check; we could also try to check 467 * XXX: It would be nice to also check whether this
468 * whether this pseudoflavor is supported, but at worst 468 * pseudoflavor is supported, so we can discover the
469 * an unsupported pseudoflavor on the export would just 469 * problem at export time instead of when a client fails
470 * be a pseudoflavor that won't match the flavor of any 470 * to authenticate.
471 * authenticated request. The administrator will
472 * probably discover the problem when someone fails to
473 * authenticate.
474 */ 471 */
475 if (f->pseudoflavor < 0)
476 return -EINVAL;
477 err = get_int(mesg, &f->flags); 472 err = get_int(mesg, &f->flags);
478 if (err) 473 if (err)
479 return err; 474 return err;
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index 7c9fe838f038..a713c418a922 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -652,8 +652,6 @@ nfsd3_proc_commit(struct svc_rqst * rqstp, struct nfsd3_commitargs *argp,
652 * NFSv3 Server procedures. 652 * NFSv3 Server procedures.
653 * Only the results of non-idempotent operations are cached. 653 * Only the results of non-idempotent operations are cached.
654 */ 654 */
655#define nfs3svc_decode_voidargs NULL
656#define nfs3svc_release_void NULL
657#define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle 655#define nfs3svc_decode_fhandleargs nfs3svc_decode_fhandle
658#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat 656#define nfs3svc_encode_attrstatres nfs3svc_encode_attrstat
659#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat 657#define nfs3svc_encode_wccstatres nfs3svc_encode_wccstat
@@ -686,28 +684,219 @@ struct nfsd3_voidargs { int dummy; };
686#define WC (7+pAT) /* WCC attributes */ 684#define WC (7+pAT) /* WCC attributes */
687 685
688static struct svc_procedure nfsd_procedures3[22] = { 686static struct svc_procedure nfsd_procedures3[22] = {
689 PROC(null, void, void, void, RC_NOCACHE, ST), 687 [NFS3PROC_NULL] = {
690 PROC(getattr, fhandle, attrstat, fhandle, RC_NOCACHE, ST+AT), 688 .pc_func = (svc_procfunc) nfsd3_proc_null,
691 PROC(setattr, sattr, wccstat, fhandle, RC_REPLBUFF, ST+WC), 689 .pc_encode = (kxdrproc_t) nfs3svc_encode_voidres,
692 PROC(lookup, dirop, dirop, fhandle2, RC_NOCACHE, ST+FH+pAT+pAT), 690 .pc_argsize = sizeof(struct nfsd3_voidargs),
693 PROC(access, access, access, fhandle, RC_NOCACHE, ST+pAT+1), 691 .pc_ressize = sizeof(struct nfsd3_voidres),
694 PROC(readlink, readlink, readlink, fhandle, RC_NOCACHE, ST+pAT+1+NFS3_MAXPATHLEN/4), 692 .pc_cachetype = RC_NOCACHE,
695 PROC(read, read, read, fhandle, RC_NOCACHE, ST+pAT+4+NFSSVC_MAXBLKSIZE/4), 693 .pc_xdrressize = ST,
696 PROC(write, write, write, fhandle, RC_REPLBUFF, ST+WC+4), 694 },
697 PROC(create, create, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC), 695 [NFS3PROC_GETATTR] = {
698 PROC(mkdir, mkdir, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC), 696 .pc_func = (svc_procfunc) nfsd3_proc_getattr,
699 PROC(symlink, symlink, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC), 697 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
700 PROC(mknod, mknod, create, fhandle2, RC_REPLBUFF, ST+(1+FH+pAT)+WC), 698 .pc_encode = (kxdrproc_t) nfs3svc_encode_attrstatres,
701 PROC(remove, dirop, wccstat, fhandle, RC_REPLBUFF, ST+WC), 699 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
702 PROC(rmdir, dirop, wccstat, fhandle, RC_REPLBUFF, ST+WC), 700 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
703 PROC(rename, rename, rename, fhandle2, RC_REPLBUFF, ST+WC+WC), 701 .pc_ressize = sizeof(struct nfsd3_attrstatres),
704 PROC(link, link, link, fhandle2, RC_REPLBUFF, ST+pAT+WC), 702 .pc_cachetype = RC_NOCACHE,
705 PROC(readdir, readdir, readdir, fhandle, RC_NOCACHE, 0), 703 .pc_xdrressize = ST+AT,
706 PROC(readdirplus,readdirplus, readdir, fhandle, RC_NOCACHE, 0), 704 },
707 PROC(fsstat, fhandle, fsstat, void, RC_NOCACHE, ST+pAT+2*6+1), 705 [NFS3PROC_SETATTR] = {
708 PROC(fsinfo, fhandle, fsinfo, void, RC_NOCACHE, ST+pAT+12), 706 .pc_func = (svc_procfunc) nfsd3_proc_setattr,
709 PROC(pathconf, fhandle, pathconf, void, RC_NOCACHE, ST+pAT+6), 707 .pc_decode = (kxdrproc_t) nfs3svc_decode_sattrargs,
710 PROC(commit, commit, commit, fhandle, RC_NOCACHE, ST+WC+2), 708 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
709 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
710 .pc_argsize = sizeof(struct nfsd3_sattrargs),
711 .pc_ressize = sizeof(struct nfsd3_wccstatres),
712 .pc_cachetype = RC_REPLBUFF,
713 .pc_xdrressize = ST+WC,
714 },
715 [NFS3PROC_LOOKUP] = {
716 .pc_func = (svc_procfunc) nfsd3_proc_lookup,
717 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
718 .pc_encode = (kxdrproc_t) nfs3svc_encode_diropres,
719 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
720 .pc_argsize = sizeof(struct nfsd3_diropargs),
721 .pc_ressize = sizeof(struct nfsd3_diropres),
722 .pc_cachetype = RC_NOCACHE,
723 .pc_xdrressize = ST+FH+pAT+pAT,
724 },
725 [NFS3PROC_ACCESS] = {
726 .pc_func = (svc_procfunc) nfsd3_proc_access,
727 .pc_decode = (kxdrproc_t) nfs3svc_decode_accessargs,
728 .pc_encode = (kxdrproc_t) nfs3svc_encode_accessres,
729 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
730 .pc_argsize = sizeof(struct nfsd3_accessargs),
731 .pc_ressize = sizeof(struct nfsd3_accessres),
732 .pc_cachetype = RC_NOCACHE,
733 .pc_xdrressize = ST+pAT+1,
734 },
735 [NFS3PROC_READLINK] = {
736 .pc_func = (svc_procfunc) nfsd3_proc_readlink,
737 .pc_decode = (kxdrproc_t) nfs3svc_decode_readlinkargs,
738 .pc_encode = (kxdrproc_t) nfs3svc_encode_readlinkres,
739 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
740 .pc_argsize = sizeof(struct nfsd3_readlinkargs),
741 .pc_ressize = sizeof(struct nfsd3_readlinkres),
742 .pc_cachetype = RC_NOCACHE,
743 .pc_xdrressize = ST+pAT+1+NFS3_MAXPATHLEN/4,
744 },
745 [NFS3PROC_READ] = {
746 .pc_func = (svc_procfunc) nfsd3_proc_read,
747 .pc_decode = (kxdrproc_t) nfs3svc_decode_readargs,
748 .pc_encode = (kxdrproc_t) nfs3svc_encode_readres,
749 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
750 .pc_argsize = sizeof(struct nfsd3_readargs),
751 .pc_ressize = sizeof(struct nfsd3_readres),
752 .pc_cachetype = RC_NOCACHE,
753 .pc_xdrressize = ST+pAT+4+NFSSVC_MAXBLKSIZE/4,
754 },
755 [NFS3PROC_WRITE] = {
756 .pc_func = (svc_procfunc) nfsd3_proc_write,
757 .pc_decode = (kxdrproc_t) nfs3svc_decode_writeargs,
758 .pc_encode = (kxdrproc_t) nfs3svc_encode_writeres,
759 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
760 .pc_argsize = sizeof(struct nfsd3_writeargs),
761 .pc_ressize = sizeof(struct nfsd3_writeres),
762 .pc_cachetype = RC_REPLBUFF,
763 .pc_xdrressize = ST+WC+4,
764 },
765 [NFS3PROC_CREATE] = {
766 .pc_func = (svc_procfunc) nfsd3_proc_create,
767 .pc_decode = (kxdrproc_t) nfs3svc_decode_createargs,
768 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
769 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
770 .pc_argsize = sizeof(struct nfsd3_createargs),
771 .pc_ressize = sizeof(struct nfsd3_createres),
772 .pc_cachetype = RC_REPLBUFF,
773 .pc_xdrressize = ST+(1+FH+pAT)+WC,
774 },
775 [NFS3PROC_MKDIR] = {
776 .pc_func = (svc_procfunc) nfsd3_proc_mkdir,
777 .pc_decode = (kxdrproc_t) nfs3svc_decode_mkdirargs,
778 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
779 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
780 .pc_argsize = sizeof(struct nfsd3_mkdirargs),
781 .pc_ressize = sizeof(struct nfsd3_createres),
782 .pc_cachetype = RC_REPLBUFF,
783 .pc_xdrressize = ST+(1+FH+pAT)+WC,
784 },
785 [NFS3PROC_SYMLINK] = {
786 .pc_func = (svc_procfunc) nfsd3_proc_symlink,
787 .pc_decode = (kxdrproc_t) nfs3svc_decode_symlinkargs,
788 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
789 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
790 .pc_argsize = sizeof(struct nfsd3_symlinkargs),
791 .pc_ressize = sizeof(struct nfsd3_createres),
792 .pc_cachetype = RC_REPLBUFF,
793 .pc_xdrressize = ST+(1+FH+pAT)+WC,
794 },
795 [NFS3PROC_MKNOD] = {
796 .pc_func = (svc_procfunc) nfsd3_proc_mknod,
797 .pc_decode = (kxdrproc_t) nfs3svc_decode_mknodargs,
798 .pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
799 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
800 .pc_argsize = sizeof(struct nfsd3_mknodargs),
801 .pc_ressize = sizeof(struct nfsd3_createres),
802 .pc_cachetype = RC_REPLBUFF,
803 .pc_xdrressize = ST+(1+FH+pAT)+WC,
804 },
805 [NFS3PROC_REMOVE] = {
806 .pc_func = (svc_procfunc) nfsd3_proc_remove,
807 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
808 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
809 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
810 .pc_argsize = sizeof(struct nfsd3_diropargs),
811 .pc_ressize = sizeof(struct nfsd3_wccstatres),
812 .pc_cachetype = RC_REPLBUFF,
813 .pc_xdrressize = ST+WC,
814 },
815 [NFS3PROC_RMDIR] = {
816 .pc_func = (svc_procfunc) nfsd3_proc_rmdir,
817 .pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
818 .pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
819 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
820 .pc_argsize = sizeof(struct nfsd3_diropargs),
821 .pc_ressize = sizeof(struct nfsd3_wccstatres),
822 .pc_cachetype = RC_REPLBUFF,
823 .pc_xdrressize = ST+WC,
824 },
825 [NFS3PROC_RENAME] = {
826 .pc_func = (svc_procfunc) nfsd3_proc_rename,
827 .pc_decode = (kxdrproc_t) nfs3svc_decode_renameargs,
828 .pc_encode = (kxdrproc_t) nfs3svc_encode_renameres,
829 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
830 .pc_argsize = sizeof(struct nfsd3_renameargs),
831 .pc_ressize = sizeof(struct nfsd3_renameres),
832 .pc_cachetype = RC_REPLBUFF,
833 .pc_xdrressize = ST+WC+WC,
834 },
835 [NFS3PROC_LINK] = {
836 .pc_func = (svc_procfunc) nfsd3_proc_link,
837 .pc_decode = (kxdrproc_t) nfs3svc_decode_linkargs,
838 .pc_encode = (kxdrproc_t) nfs3svc_encode_linkres,
839 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle2,
840 .pc_argsize = sizeof(struct nfsd3_linkargs),
841 .pc_ressize = sizeof(struct nfsd3_linkres),
842 .pc_cachetype = RC_REPLBUFF,
843 .pc_xdrressize = ST+pAT+WC,
844 },
845 [NFS3PROC_READDIR] = {
846 .pc_func = (svc_procfunc) nfsd3_proc_readdir,
847 .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirargs,
848 .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
849 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
850 .pc_argsize = sizeof(struct nfsd3_readdirargs),
851 .pc_ressize = sizeof(struct nfsd3_readdirres),
852 .pc_cachetype = RC_NOCACHE,
853 },
854 [NFS3PROC_READDIRPLUS] = {
855 .pc_func = (svc_procfunc) nfsd3_proc_readdirplus,
856 .pc_decode = (kxdrproc_t) nfs3svc_decode_readdirplusargs,
857 .pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
858 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
859 .pc_argsize = sizeof(struct nfsd3_readdirplusargs),
860 .pc_ressize = sizeof(struct nfsd3_readdirres),
861 .pc_cachetype = RC_NOCACHE,
862 },
863 [NFS3PROC_FSSTAT] = {
864 .pc_func = (svc_procfunc) nfsd3_proc_fsstat,
865 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
866 .pc_encode = (kxdrproc_t) nfs3svc_encode_fsstatres,
867 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
868 .pc_ressize = sizeof(struct nfsd3_fsstatres),
869 .pc_cachetype = RC_NOCACHE,
870 .pc_xdrressize = ST+pAT+2*6+1,
871 },
872 [NFS3PROC_FSINFO] = {
873 .pc_func = (svc_procfunc) nfsd3_proc_fsinfo,
874 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
875 .pc_encode = (kxdrproc_t) nfs3svc_encode_fsinfores,
876 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
877 .pc_ressize = sizeof(struct nfsd3_fsinfores),
878 .pc_cachetype = RC_NOCACHE,
879 .pc_xdrressize = ST+pAT+12,
880 },
881 [NFS3PROC_PATHCONF] = {
882 .pc_func = (svc_procfunc) nfsd3_proc_pathconf,
883 .pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
884 .pc_encode = (kxdrproc_t) nfs3svc_encode_pathconfres,
885 .pc_argsize = sizeof(struct nfsd3_fhandleargs),
886 .pc_ressize = sizeof(struct nfsd3_pathconfres),
887 .pc_cachetype = RC_NOCACHE,
888 .pc_xdrressize = ST+pAT+6,
889 },
890 [NFS3PROC_COMMIT] = {
891 .pc_func = (svc_procfunc) nfsd3_proc_commit,
892 .pc_decode = (kxdrproc_t) nfs3svc_decode_commitargs,
893 .pc_encode = (kxdrproc_t) nfs3svc_encode_commitres,
894 .pc_release = (kxdrproc_t) nfs3svc_release_fhandle,
895 .pc_argsize = sizeof(struct nfsd3_commitargs),
896 .pc_ressize = sizeof(struct nfsd3_commitres),
897 .pc_cachetype = RC_NOCACHE,
898 .pc_xdrressize = ST+WC+2,
899 },
711}; 900};
712 901
713struct svc_version nfsd_version3 = { 902struct svc_version nfsd_version3 = {
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 17d0dd997204..01d4ec1c88e0 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -272,6 +272,7 @@ void fill_post_wcc(struct svc_fh *fhp)
272 272
273 err = vfs_getattr(fhp->fh_export->ex_path.mnt, fhp->fh_dentry, 273 err = vfs_getattr(fhp->fh_export->ex_path.mnt, fhp->fh_dentry,
274 &fhp->fh_post_attr); 274 &fhp->fh_post_attr);
275 fhp->fh_post_change = fhp->fh_dentry->d_inode->i_version;
275 if (err) 276 if (err)
276 fhp->fh_post_saved = 0; 277 fhp->fh_post_saved = 0;
277 else 278 else
diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c
index 290289bd44f7..3fd23f7aceca 100644
--- a/fs/nfsd/nfs4callback.c
+++ b/fs/nfsd/nfs4callback.c
@@ -140,8 +140,10 @@ struct nfs4_cb_compound_hdr {
140 int status; 140 int status;
141 u32 ident; 141 u32 ident;
142 u32 nops; 142 u32 nops;
143 __be32 *nops_p;
144 u32 minorversion;
143 u32 taglen; 145 u32 taglen;
144 char * tag; 146 char *tag;
145}; 147};
146 148
147static struct { 149static struct {
@@ -201,33 +203,39 @@ nfs_cb_stat_to_errno(int stat)
201 * XDR encode 203 * XDR encode
202 */ 204 */
203 205
204static int 206static void
205encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr) 207encode_cb_compound_hdr(struct xdr_stream *xdr, struct nfs4_cb_compound_hdr *hdr)
206{ 208{
207 __be32 * p; 209 __be32 * p;
208 210
209 RESERVE_SPACE(16); 211 RESERVE_SPACE(16);
210 WRITE32(0); /* tag length is always 0 */ 212 WRITE32(0); /* tag length is always 0 */
211 WRITE32(NFS4_MINOR_VERSION); 213 WRITE32(hdr->minorversion);
212 WRITE32(hdr->ident); 214 WRITE32(hdr->ident);
215 hdr->nops_p = p;
213 WRITE32(hdr->nops); 216 WRITE32(hdr->nops);
214 return 0;
215} 217}
216 218
217static int 219static void encode_cb_nops(struct nfs4_cb_compound_hdr *hdr)
218encode_cb_recall(struct xdr_stream *xdr, struct nfs4_cb_recall *cb_rec) 220{
221 *hdr->nops_p = htonl(hdr->nops);
222}
223
224static void
225encode_cb_recall(struct xdr_stream *xdr, struct nfs4_delegation *dp,
226 struct nfs4_cb_compound_hdr *hdr)
219{ 227{
220 __be32 *p; 228 __be32 *p;
221 int len = cb_rec->cbr_fh.fh_size; 229 int len = dp->dl_fh.fh_size;
222 230
223 RESERVE_SPACE(12+sizeof(cb_rec->cbr_stateid) + len); 231 RESERVE_SPACE(12+sizeof(dp->dl_stateid) + len);
224 WRITE32(OP_CB_RECALL); 232 WRITE32(OP_CB_RECALL);
225 WRITE32(cb_rec->cbr_stateid.si_generation); 233 WRITE32(dp->dl_stateid.si_generation);
226 WRITEMEM(&cb_rec->cbr_stateid.si_opaque, sizeof(stateid_opaque_t)); 234 WRITEMEM(&dp->dl_stateid.si_opaque, sizeof(stateid_opaque_t));
227 WRITE32(cb_rec->cbr_trunc); 235 WRITE32(0); /* truncate optimization not implemented */
228 WRITE32(len); 236 WRITE32(len);
229 WRITEMEM(&cb_rec->cbr_fh.fh_base, len); 237 WRITEMEM(&dp->dl_fh.fh_base, len);
230 return 0; 238 hdr->nops++;
231} 239}
232 240
233static int 241static int
@@ -241,17 +249,18 @@ nfs4_xdr_enc_cb_null(struct rpc_rqst *req, __be32 *p)
241} 249}
242 250
243static int 251static int
244nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, struct nfs4_cb_recall *args) 252nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, __be32 *p, struct nfs4_delegation *args)
245{ 253{
246 struct xdr_stream xdr; 254 struct xdr_stream xdr;
247 struct nfs4_cb_compound_hdr hdr = { 255 struct nfs4_cb_compound_hdr hdr = {
248 .ident = args->cbr_ident, 256 .ident = args->dl_ident,
249 .nops = 1,
250 }; 257 };
251 258
252 xdr_init_encode(&xdr, &req->rq_snd_buf, p); 259 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
253 encode_cb_compound_hdr(&xdr, &hdr); 260 encode_cb_compound_hdr(&xdr, &hdr);
254 return (encode_cb_recall(&xdr, args)); 261 encode_cb_recall(&xdr, args, &hdr);
262 encode_cb_nops(&hdr);
263 return 0;
255} 264}
256 265
257 266
@@ -358,18 +367,21 @@ static struct rpc_program cb_program = {
358 .pipe_dir_name = "/nfsd4_cb", 367 .pipe_dir_name = "/nfsd4_cb",
359}; 368};
360 369
370static int max_cb_time(void)
371{
372 return max(NFSD_LEASE_TIME/10, (time_t)1) * HZ;
373}
374
361/* Reference counting, callback cleanup, etc., all look racy as heck. 375/* Reference counting, callback cleanup, etc., all look racy as heck.
362 * And why is cb_set an atomic? */ 376 * And why is cb_set an atomic? */
363 377
364static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp) 378int setup_callback_client(struct nfs4_client *clp)
365{ 379{
366 struct sockaddr_in addr; 380 struct sockaddr_in addr;
367 struct nfs4_callback *cb = &clp->cl_callback; 381 struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
368 struct rpc_timeout timeparms = { 382 struct rpc_timeout timeparms = {
369 .to_initval = (NFSD_LEASE_TIME/4) * HZ, 383 .to_initval = max_cb_time(),
370 .to_retries = 5, 384 .to_retries = 0,
371 .to_maxval = (NFSD_LEASE_TIME/2) * HZ,
372 .to_exponential = 1,
373 }; 385 };
374 struct rpc_create_args args = { 386 struct rpc_create_args args = {
375 .protocol = IPPROTO_TCP, 387 .protocol = IPPROTO_TCP,
@@ -386,7 +398,7 @@ static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp)
386 struct rpc_clnt *client; 398 struct rpc_clnt *client;
387 399
388 if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5)) 400 if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
389 return ERR_PTR(-EINVAL); 401 return -EINVAL;
390 402
391 /* Initialize address */ 403 /* Initialize address */
392 memset(&addr, 0, sizeof(addr)); 404 memset(&addr, 0, sizeof(addr));
@@ -396,48 +408,77 @@ static struct rpc_clnt *setup_callback_client(struct nfs4_client *clp)
396 408
397 /* Create RPC client */ 409 /* Create RPC client */
398 client = rpc_create(&args); 410 client = rpc_create(&args);
399 if (IS_ERR(client)) 411 if (IS_ERR(client)) {
400 dprintk("NFSD: couldn't create callback client: %ld\n", 412 dprintk("NFSD: couldn't create callback client: %ld\n",
401 PTR_ERR(client)); 413 PTR_ERR(client));
402 return client; 414 return PTR_ERR(client);
415 }
416 cb->cb_client = client;
417 return 0;
418
419}
420
421static void warn_no_callback_path(struct nfs4_client *clp, int reason)
422{
423 dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
424 (int)clp->cl_name.len, clp->cl_name.data, reason);
425}
426
427static void nfsd4_cb_probe_done(struct rpc_task *task, void *calldata)
428{
429 struct nfs4_client *clp = calldata;
430
431 if (task->tk_status)
432 warn_no_callback_path(clp, task->tk_status);
433 else
434 atomic_set(&clp->cl_cb_conn.cb_set, 1);
435 put_nfs4_client(clp);
436}
437
438static const struct rpc_call_ops nfsd4_cb_probe_ops = {
439 .rpc_call_done = nfsd4_cb_probe_done,
440};
403 441
442static struct rpc_cred *lookup_cb_cred(struct nfs4_cb_conn *cb)
443{
444 struct auth_cred acred = {
445 .machine_cred = 1
446 };
447
448 /*
449 * Note in the gss case this doesn't actually have to wait for a
450 * gss upcall (or any calls to the client); this just creates a
451 * non-uptodate cred which the rpc state machine will fill in with
452 * a refresh_upcall later.
453 */
454 return rpcauth_lookup_credcache(cb->cb_client->cl_auth, &acred,
455 RPCAUTH_LOOKUP_NEW);
404} 456}
405 457
406static int do_probe_callback(void *data) 458void do_probe_callback(struct nfs4_client *clp)
407{ 459{
408 struct nfs4_client *clp = data; 460 struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
409 struct nfs4_callback *cb = &clp->cl_callback;
410 struct rpc_message msg = { 461 struct rpc_message msg = {
411 .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL], 462 .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL],
412 .rpc_argp = clp, 463 .rpc_argp = clp,
413 }; 464 };
414 struct rpc_clnt *client; 465 struct rpc_cred *cred;
415 int status; 466 int status;
416 467
417 client = setup_callback_client(clp); 468 cred = lookup_cb_cred(cb);
418 if (IS_ERR(client)) { 469 if (IS_ERR(cred)) {
419 status = PTR_ERR(client); 470 status = PTR_ERR(cred);
420 dprintk("NFSD: couldn't create callback client: %d\n", 471 goto out;
421 status); 472 }
422 goto out_err; 473 cb->cb_cred = cred;
474 msg.rpc_cred = cb->cb_cred;
475 status = rpc_call_async(cb->cb_client, &msg, RPC_TASK_SOFT,
476 &nfsd4_cb_probe_ops, (void *)clp);
477out:
478 if (status) {
479 warn_no_callback_path(clp, status);
480 put_nfs4_client(clp);
423 } 481 }
424
425 status = rpc_call_sync(client, &msg, RPC_TASK_SOFT);
426
427 if (status)
428 goto out_release_client;
429
430 cb->cb_client = client;
431 atomic_set(&cb->cb_set, 1);
432 put_nfs4_client(clp);
433 return 0;
434out_release_client:
435 rpc_shutdown_client(client);
436out_err:
437 dprintk("NFSD: warning: no callback path to client %.*s: error %d\n",
438 (int)clp->cl_name.len, clp->cl_name.data, status);
439 put_nfs4_client(clp);
440 return 0;
441} 482}
442 483
443/* 484/*
@@ -446,21 +487,65 @@ out_err:
446void 487void
447nfsd4_probe_callback(struct nfs4_client *clp) 488nfsd4_probe_callback(struct nfs4_client *clp)
448{ 489{
449 struct task_struct *t; 490 int status;
450 491
451 BUG_ON(atomic_read(&clp->cl_callback.cb_set)); 492 BUG_ON(atomic_read(&clp->cl_cb_conn.cb_set));
493
494 status = setup_callback_client(clp);
495 if (status) {
496 warn_no_callback_path(clp, status);
497 return;
498 }
452 499
453 /* the task holds a reference to the nfs4_client struct */ 500 /* the task holds a reference to the nfs4_client struct */
454 atomic_inc(&clp->cl_count); 501 atomic_inc(&clp->cl_count);
455 502
456 t = kthread_run(do_probe_callback, clp, "nfs4_cb_probe"); 503 do_probe_callback(clp);
504}
457 505
458 if (IS_ERR(t)) 506static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata)
459 atomic_dec(&clp->cl_count); 507{
508 struct nfs4_delegation *dp = calldata;
509 struct nfs4_client *clp = dp->dl_client;
460 510
461 return; 511 switch (task->tk_status) {
512 case -EIO:
513 /* Network partition? */
514 atomic_set(&clp->cl_cb_conn.cb_set, 0);
515 warn_no_callback_path(clp, task->tk_status);
516 case -EBADHANDLE:
517 case -NFS4ERR_BAD_STATEID:
518 /* Race: client probably got cb_recall
519 * before open reply granting delegation */
520 break;
521 default:
522 /* success, or error we can't handle */
523 return;
524 }
525 if (dp->dl_retries--) {
526 rpc_delay(task, 2*HZ);
527 task->tk_status = 0;
528 rpc_restart_call(task);
529 } else {
530 atomic_set(&clp->cl_cb_conn.cb_set, 0);
531 warn_no_callback_path(clp, task->tk_status);
532 }
533}
534
535static void nfsd4_cb_recall_release(void *calldata)
536{
537 struct nfs4_delegation *dp = calldata;
538 struct nfs4_client *clp = dp->dl_client;
539
540 nfs4_put_delegation(dp);
541 put_nfs4_client(clp);
462} 542}
463 543
544static const struct rpc_call_ops nfsd4_cb_recall_ops = {
545 .rpc_call_done = nfsd4_cb_recall_done,
546 .rpc_release = nfsd4_cb_recall_release,
547};
548
464/* 549/*
465 * called with dp->dl_count inc'ed. 550 * called with dp->dl_count inc'ed.
466 */ 551 */
@@ -468,41 +553,19 @@ void
468nfsd4_cb_recall(struct nfs4_delegation *dp) 553nfsd4_cb_recall(struct nfs4_delegation *dp)
469{ 554{
470 struct nfs4_client *clp = dp->dl_client; 555 struct nfs4_client *clp = dp->dl_client;
471 struct rpc_clnt *clnt = clp->cl_callback.cb_client; 556 struct rpc_clnt *clnt = clp->cl_cb_conn.cb_client;
472 struct nfs4_cb_recall *cbr = &dp->dl_recall;
473 struct rpc_message msg = { 557 struct rpc_message msg = {
474 .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL], 558 .rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL],
475 .rpc_argp = cbr, 559 .rpc_argp = dp,
560 .rpc_cred = clp->cl_cb_conn.cb_cred
476 }; 561 };
477 int retries = 1; 562 int status;
478 int status = 0; 563
479 564 dp->dl_retries = 1;
480 cbr->cbr_trunc = 0; /* XXX need to implement truncate optimization */ 565 status = rpc_call_async(clnt, &msg, RPC_TASK_SOFT,
481 cbr->cbr_dp = dp; 566 &nfsd4_cb_recall_ops, dp);
482 567 if (status) {
483 status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT); 568 put_nfs4_client(clp);
484 while (retries--) { 569 nfs4_put_delegation(dp);
485 switch (status) {
486 case -EIO:
487 /* Network partition? */
488 atomic_set(&clp->cl_callback.cb_set, 0);
489 case -EBADHANDLE:
490 case -NFS4ERR_BAD_STATEID:
491 /* Race: client probably got cb_recall
492 * before open reply granting delegation */
493 break;
494 default:
495 goto out_put_cred;
496 }
497 ssleep(2);
498 status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFT);
499 } 570 }
500out_put_cred:
501 /*
502 * Success or failure, now we're either waiting for lease expiration
503 * or deleg_return.
504 */
505 put_nfs4_client(clp);
506 nfs4_put_delegation(dp);
507 return;
508} 571}
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index b2883e9c6381..7c8801769a3c 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -51,6 +51,78 @@
51 51
52#define NFSDDBG_FACILITY NFSDDBG_PROC 52#define NFSDDBG_FACILITY NFSDDBG_PROC
53 53
54static u32 nfsd_attrmask[] = {
55 NFSD_WRITEABLE_ATTRS_WORD0,
56 NFSD_WRITEABLE_ATTRS_WORD1,
57 NFSD_WRITEABLE_ATTRS_WORD2
58};
59
60static u32 nfsd41_ex_attrmask[] = {
61 NFSD_SUPPATTR_EXCLCREAT_WORD0,
62 NFSD_SUPPATTR_EXCLCREAT_WORD1,
63 NFSD_SUPPATTR_EXCLCREAT_WORD2
64};
65
66static __be32
67check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
68 u32 *bmval, u32 *writable)
69{
70 struct dentry *dentry = cstate->current_fh.fh_dentry;
71 struct svc_export *exp = cstate->current_fh.fh_export;
72
73 /*
74 * Check about attributes are supported by the NFSv4 server or not.
75 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
76 */
77 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
78 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
79 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
80 return nfserr_attrnotsupp;
81
82 /*
83 * Check FATTR4_WORD0_ACL & FATTR4_WORD0_FS_LOCATIONS can be supported
84 * in current environment or not.
85 */
86 if (bmval[0] & FATTR4_WORD0_ACL) {
87 if (!IS_POSIXACL(dentry->d_inode))
88 return nfserr_attrnotsupp;
89 }
90 if (bmval[0] & FATTR4_WORD0_FS_LOCATIONS) {
91 if (exp->ex_fslocs.locations == NULL)
92 return nfserr_attrnotsupp;
93 }
94
95 /*
96 * According to spec, read-only attributes return ERR_INVAL.
97 */
98 if (writable) {
99 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
100 (bmval[2] & ~writable[2]))
101 return nfserr_inval;
102 }
103
104 return nfs_ok;
105}
106
107static __be32
108nfsd4_check_open_attributes(struct svc_rqst *rqstp,
109 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
110{
111 __be32 status = nfs_ok;
112
113 if (open->op_create == NFS4_OPEN_CREATE) {
114 if (open->op_createmode == NFS4_CREATE_UNCHECKED
115 || open->op_createmode == NFS4_CREATE_GUARDED)
116 status = check_attr_support(rqstp, cstate,
117 open->op_bmval, nfsd_attrmask);
118 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
119 status = check_attr_support(rqstp, cstate,
120 open->op_bmval, nfsd41_ex_attrmask);
121 }
122
123 return status;
124}
125
54static inline void 126static inline void
55fh_dup2(struct svc_fh *dst, struct svc_fh *src) 127fh_dup2(struct svc_fh *dst, struct svc_fh *src)
56{ 128{
@@ -225,6 +297,10 @@ nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
225 if (status) 297 if (status)
226 goto out; 298 goto out;
227 299
300 status = nfsd4_check_open_attributes(rqstp, cstate, open);
301 if (status)
302 goto out;
303
228 /* Openowner is now set, so sequence id will get bumped. Now we need 304 /* Openowner is now set, so sequence id will get bumped. Now we need
229 * these checks before we do any creates: */ 305 * these checks before we do any creates: */
230 status = nfserr_grace; 306 status = nfserr_grace;
@@ -395,6 +471,11 @@ nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
395 if (status) 471 if (status)
396 return status; 472 return status;
397 473
474 status = check_attr_support(rqstp, cstate, create->cr_bmval,
475 nfsd_attrmask);
476 if (status)
477 return status;
478
398 switch (create->cr_type) { 479 switch (create->cr_type) {
399 case NF4LNK: 480 case NF4LNK:
400 /* ugh! we have to null-terminate the linktext, or 481 /* ugh! we have to null-terminate the linktext, or
@@ -689,6 +770,12 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
689 if (status) 770 if (status)
690 return status; 771 return status;
691 status = nfs_ok; 772 status = nfs_ok;
773
774 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
775 nfsd_attrmask);
776 if (status)
777 goto out;
778
692 if (setattr->sa_acl != NULL) 779 if (setattr->sa_acl != NULL)
693 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, 780 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
694 setattr->sa_acl); 781 setattr->sa_acl);
@@ -763,10 +850,10 @@ _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
763 if (status) 850 if (status)
764 return status; 851 return status;
765 852
766 if ((verify->ve_bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) 853 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
767 || (verify->ve_bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) 854 if (status)
768 || (verify->ve_bmval[2] & ~nfsd_suppattrs2(cstate->minorversion))) 855 return status;
769 return nfserr_attrnotsupp; 856
770 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) 857 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
771 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) 858 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
772 return nfserr_inval; 859 return nfserr_inval;
@@ -1226,24 +1313,9 @@ static const char *nfsd4_op_name(unsigned opnum)
1226 return "unknown_operation"; 1313 return "unknown_operation";
1227} 1314}
1228 1315
1229#define nfs4svc_decode_voidargs NULL
1230#define nfs4svc_release_void NULL
1231#define nfsd4_voidres nfsd4_voidargs 1316#define nfsd4_voidres nfsd4_voidargs
1232#define nfs4svc_release_compound NULL
1233struct nfsd4_voidargs { int dummy; }; 1317struct nfsd4_voidargs { int dummy; };
1234 1318
1235#define PROC(name, argt, rest, relt, cache, respsize) \
1236 { (svc_procfunc) nfsd4_proc_##name, \
1237 (kxdrproc_t) nfs4svc_decode_##argt##args, \
1238 (kxdrproc_t) nfs4svc_encode_##rest##res, \
1239 (kxdrproc_t) nfs4svc_release_##relt, \
1240 sizeof(struct nfsd4_##argt##args), \
1241 sizeof(struct nfsd4_##rest##res), \
1242 0, \
1243 cache, \
1244 respsize, \
1245 }
1246
1247/* 1319/*
1248 * TODO: At the present time, the NFSv4 server does not do XID caching 1320 * TODO: At the present time, the NFSv4 server does not do XID caching
1249 * of requests. Implementing XID caching would not be a serious problem, 1321 * of requests. Implementing XID caching would not be a serious problem,
@@ -1255,8 +1327,23 @@ struct nfsd4_voidargs { int dummy; };
1255 * better XID's. 1327 * better XID's.
1256 */ 1328 */
1257static struct svc_procedure nfsd_procedures4[2] = { 1329static struct svc_procedure nfsd_procedures4[2] = {
1258 PROC(null, void, void, void, RC_NOCACHE, 1), 1330 [NFSPROC4_NULL] = {
1259 PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4) 1331 .pc_func = (svc_procfunc) nfsd4_proc_null,
1332 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1333 .pc_argsize = sizeof(struct nfsd4_voidargs),
1334 .pc_ressize = sizeof(struct nfsd4_voidres),
1335 .pc_cachetype = RC_NOCACHE,
1336 .pc_xdrressize = 1,
1337 },
1338 [NFSPROC4_COMPOUND] = {
1339 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1340 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1341 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1342 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1343 .pc_ressize = sizeof(struct nfsd4_compoundres),
1344 .pc_cachetype = RC_NOCACHE,
1345 .pc_xdrressize = NFSD_BUFSIZE/4,
1346 },
1260}; 1347};
1261 1348
1262struct svc_version nfsd_version4 = { 1349struct svc_version nfsd_version4 = {
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 3b711f5147a7..980a216a48c8 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -182,7 +182,7 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
182{ 182{
183 struct nfs4_delegation *dp; 183 struct nfs4_delegation *dp;
184 struct nfs4_file *fp = stp->st_file; 184 struct nfs4_file *fp = stp->st_file;
185 struct nfs4_callback *cb = &stp->st_stateowner->so_client->cl_callback; 185 struct nfs4_cb_conn *cb = &stp->st_stateowner->so_client->cl_cb_conn;
186 186
187 dprintk("NFSD alloc_init_deleg\n"); 187 dprintk("NFSD alloc_init_deleg\n");
188 if (fp->fi_had_conflict) 188 if (fp->fi_had_conflict)
@@ -203,10 +203,8 @@ alloc_init_deleg(struct nfs4_client *clp, struct nfs4_stateid *stp, struct svc_f
203 get_file(stp->st_vfs_file); 203 get_file(stp->st_vfs_file);
204 dp->dl_vfs_file = stp->st_vfs_file; 204 dp->dl_vfs_file = stp->st_vfs_file;
205 dp->dl_type = type; 205 dp->dl_type = type;
206 dp->dl_recall.cbr_dp = NULL; 206 dp->dl_ident = cb->cb_ident;
207 dp->dl_recall.cbr_ident = cb->cb_ident; 207 dp->dl_stateid.si_boot = get_seconds();
208 dp->dl_recall.cbr_trunc = 0;
209 dp->dl_stateid.si_boot = boot_time;
210 dp->dl_stateid.si_stateownerid = current_delegid++; 208 dp->dl_stateid.si_stateownerid = current_delegid++;
211 dp->dl_stateid.si_fileid = 0; 209 dp->dl_stateid.si_fileid = 0;
212 dp->dl_stateid.si_generation = 0; 210 dp->dl_stateid.si_generation = 0;
@@ -427,6 +425,11 @@ static int set_forechannel_maxreqs(struct nfsd4_channel_attrs *fchan)
427{ 425{
428 int status = 0, np = fchan->maxreqs * NFSD_PAGES_PER_SLOT; 426 int status = 0, np = fchan->maxreqs * NFSD_PAGES_PER_SLOT;
429 427
428 if (fchan->maxreqs < 1)
429 return nfserr_inval;
430 else if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
431 fchan->maxreqs = NFSD_MAX_SLOTS_PER_SESSION;
432
430 spin_lock(&nfsd_serv->sv_lock); 433 spin_lock(&nfsd_serv->sv_lock);
431 if (np + nfsd_serv->sv_drc_pages_used > nfsd_serv->sv_drc_max_pages) 434 if (np + nfsd_serv->sv_drc_pages_used > nfsd_serv->sv_drc_max_pages)
432 np = nfsd_serv->sv_drc_max_pages - nfsd_serv->sv_drc_pages_used; 435 np = nfsd_serv->sv_drc_max_pages - nfsd_serv->sv_drc_pages_used;
@@ -446,8 +449,8 @@ static int set_forechannel_maxreqs(struct nfsd4_channel_attrs *fchan)
446 * fchan holds the client values on input, and the server values on output 449 * fchan holds the client values on input, and the server values on output
447 */ 450 */
448static int init_forechannel_attrs(struct svc_rqst *rqstp, 451static int init_forechannel_attrs(struct svc_rqst *rqstp,
449 struct nfsd4_session *session, 452 struct nfsd4_channel_attrs *session_fchan,
450 struct nfsd4_channel_attrs *fchan) 453 struct nfsd4_channel_attrs *fchan)
451{ 454{
452 int status = 0; 455 int status = 0;
453 __u32 maxcount = svc_max_payload(rqstp); 456 __u32 maxcount = svc_max_payload(rqstp);
@@ -457,21 +460,21 @@ static int init_forechannel_attrs(struct svc_rqst *rqstp,
457 /* Use the client's max request and max response size if possible */ 460 /* Use the client's max request and max response size if possible */
458 if (fchan->maxreq_sz > maxcount) 461 if (fchan->maxreq_sz > maxcount)
459 fchan->maxreq_sz = maxcount; 462 fchan->maxreq_sz = maxcount;
460 session->se_fmaxreq_sz = fchan->maxreq_sz; 463 session_fchan->maxreq_sz = fchan->maxreq_sz;
461 464
462 if (fchan->maxresp_sz > maxcount) 465 if (fchan->maxresp_sz > maxcount)
463 fchan->maxresp_sz = maxcount; 466 fchan->maxresp_sz = maxcount;
464 session->se_fmaxresp_sz = fchan->maxresp_sz; 467 session_fchan->maxresp_sz = fchan->maxresp_sz;
465 468
466 /* Set the max response cached size our default which is 469 /* Set the max response cached size our default which is
467 * a multiple of PAGE_SIZE and small */ 470 * a multiple of PAGE_SIZE and small */
468 session->se_fmaxresp_cached = NFSD_PAGES_PER_SLOT * PAGE_SIZE; 471 session_fchan->maxresp_cached = NFSD_PAGES_PER_SLOT * PAGE_SIZE;
469 fchan->maxresp_cached = session->se_fmaxresp_cached; 472 fchan->maxresp_cached = session_fchan->maxresp_cached;
470 473
471 /* Use the client's maxops if possible */ 474 /* Use the client's maxops if possible */
472 if (fchan->maxops > NFSD_MAX_OPS_PER_COMPOUND) 475 if (fchan->maxops > NFSD_MAX_OPS_PER_COMPOUND)
473 fchan->maxops = NFSD_MAX_OPS_PER_COMPOUND; 476 fchan->maxops = NFSD_MAX_OPS_PER_COMPOUND;
474 session->se_fmaxops = fchan->maxops; 477 session_fchan->maxops = fchan->maxops;
475 478
476 /* try to use the client requested number of slots */ 479 /* try to use the client requested number of slots */
477 if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION) 480 if (fchan->maxreqs > NFSD_MAX_SLOTS_PER_SESSION)
@@ -483,7 +486,7 @@ static int init_forechannel_attrs(struct svc_rqst *rqstp,
483 */ 486 */
484 status = set_forechannel_maxreqs(fchan); 487 status = set_forechannel_maxreqs(fchan);
485 488
486 session->se_fnumslots = fchan->maxreqs; 489 session_fchan->maxreqs = fchan->maxreqs;
487 return status; 490 return status;
488} 491}
489 492
@@ -497,12 +500,14 @@ alloc_init_session(struct svc_rqst *rqstp, struct nfs4_client *clp,
497 memset(&tmp, 0, sizeof(tmp)); 500 memset(&tmp, 0, sizeof(tmp));
498 501
499 /* FIXME: For now, we just accept the client back channel attributes. */ 502 /* FIXME: For now, we just accept the client back channel attributes. */
500 status = init_forechannel_attrs(rqstp, &tmp, &cses->fore_channel); 503 tmp.se_bchannel = cses->back_channel;
504 status = init_forechannel_attrs(rqstp, &tmp.se_fchannel,
505 &cses->fore_channel);
501 if (status) 506 if (status)
502 goto out; 507 goto out;
503 508
504 /* allocate struct nfsd4_session and slot table in one piece */ 509 /* allocate struct nfsd4_session and slot table in one piece */
505 slotsize = tmp.se_fnumslots * sizeof(struct nfsd4_slot); 510 slotsize = tmp.se_fchannel.maxreqs * sizeof(struct nfsd4_slot);
506 new = kzalloc(sizeof(*new) + slotsize, GFP_KERNEL); 511 new = kzalloc(sizeof(*new) + slotsize, GFP_KERNEL);
507 if (!new) 512 if (!new)
508 goto out; 513 goto out;
@@ -576,7 +581,7 @@ free_session(struct kref *kref)
576 int i; 581 int i;
577 582
578 ses = container_of(kref, struct nfsd4_session, se_ref); 583 ses = container_of(kref, struct nfsd4_session, se_ref);
579 for (i = 0; i < ses->se_fnumslots; i++) { 584 for (i = 0; i < ses->se_fchannel.maxreqs; i++) {
580 struct nfsd4_cache_entry *e = &ses->se_slots[i].sl_cache_entry; 585 struct nfsd4_cache_entry *e = &ses->se_slots[i].sl_cache_entry;
581 nfsd4_release_respages(e->ce_respages, e->ce_resused); 586 nfsd4_release_respages(e->ce_respages, e->ce_resused);
582 } 587 }
@@ -632,16 +637,20 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name)
632static void 637static void
633shutdown_callback_client(struct nfs4_client *clp) 638shutdown_callback_client(struct nfs4_client *clp)
634{ 639{
635 struct rpc_clnt *clnt = clp->cl_callback.cb_client; 640 struct rpc_clnt *clnt = clp->cl_cb_conn.cb_client;
636 641
637 if (clnt) { 642 if (clnt) {
638 /* 643 /*
639 * Callback threads take a reference on the client, so there 644 * Callback threads take a reference on the client, so there
640 * should be no outstanding callbacks at this point. 645 * should be no outstanding callbacks at this point.
641 */ 646 */
642 clp->cl_callback.cb_client = NULL; 647 clp->cl_cb_conn.cb_client = NULL;
643 rpc_shutdown_client(clnt); 648 rpc_shutdown_client(clnt);
644 } 649 }
650 if (clp->cl_cb_conn.cb_cred) {
651 put_rpccred(clp->cl_cb_conn.cb_cred);
652 clp->cl_cb_conn.cb_cred = NULL;
653 }
645} 654}
646 655
647static inline void 656static inline void
@@ -714,7 +723,7 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir)
714 return NULL; 723 return NULL;
715 memcpy(clp->cl_recdir, recdir, HEXDIR_LEN); 724 memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
716 atomic_set(&clp->cl_count, 1); 725 atomic_set(&clp->cl_count, 1);
717 atomic_set(&clp->cl_callback.cb_set, 0); 726 atomic_set(&clp->cl_cb_conn.cb_set, 0);
718 INIT_LIST_HEAD(&clp->cl_idhash); 727 INIT_LIST_HEAD(&clp->cl_idhash);
719 INIT_LIST_HEAD(&clp->cl_strhash); 728 INIT_LIST_HEAD(&clp->cl_strhash);
720 INIT_LIST_HEAD(&clp->cl_openowners); 729 INIT_LIST_HEAD(&clp->cl_openowners);
@@ -966,7 +975,7 @@ parse_ipv4(unsigned int addr_len, char *addr_val, unsigned int *cbaddrp, unsigne
966static void 975static void
967gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se) 976gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se)
968{ 977{
969 struct nfs4_callback *cb = &clp->cl_callback; 978 struct nfs4_cb_conn *cb = &clp->cl_cb_conn;
970 979
971 /* Currently, we only support tcp for the callback channel */ 980 /* Currently, we only support tcp for the callback channel */
972 if ((se->se_callback_netid_len != 3) || memcmp((char *)se->se_callback_netid_val, "tcp", 3)) 981 if ((se->se_callback_netid_len != 3) || memcmp((char *)se->se_callback_netid_val, "tcp", 3))
@@ -975,6 +984,7 @@ gen_callback(struct nfs4_client *clp, struct nfsd4_setclientid *se)
975 if ( !(parse_ipv4(se->se_callback_addr_len, se->se_callback_addr_val, 984 if ( !(parse_ipv4(se->se_callback_addr_len, se->se_callback_addr_val,
976 &cb->cb_addr, &cb->cb_port))) 985 &cb->cb_addr, &cb->cb_port)))
977 goto out_err; 986 goto out_err;
987 cb->cb_minorversion = 0;
978 cb->cb_prog = se->se_callback_prog; 988 cb->cb_prog = se->se_callback_prog;
979 cb->cb_ident = se->se_callback_ident; 989 cb->cb_ident = se->se_callback_ident;
980 return; 990 return;
@@ -1128,7 +1138,7 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
1128 * is sent (lease renewal). 1138 * is sent (lease renewal).
1129 */ 1139 */
1130 if (seq && nfsd4_not_cached(resp)) { 1140 if (seq && nfsd4_not_cached(resp)) {
1131 seq->maxslots = resp->cstate.session->se_fnumslots; 1141 seq->maxslots = resp->cstate.session->se_fchannel.maxreqs;
1132 return nfs_ok; 1142 return nfs_ok;
1133 } 1143 }
1134 1144
@@ -1238,12 +1248,6 @@ nfsd4_exchange_id(struct svc_rqst *rqstp,
1238 expire_client(conf); 1248 expire_client(conf);
1239 goto out_new; 1249 goto out_new;
1240 } 1250 }
1241 if (ip_addr != conf->cl_addr &&
1242 !(exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A)) {
1243 /* Client collision. 18.35.4 case 3 */
1244 status = nfserr_clid_inuse;
1245 goto out;
1246 }
1247 /* 1251 /*
1248 * Set bit when the owner id and verifier map to an already 1252 * Set bit when the owner id and verifier map to an already
1249 * confirmed client id (18.35.3). 1253 * confirmed client id (18.35.3).
@@ -1257,12 +1261,12 @@ nfsd4_exchange_id(struct svc_rqst *rqstp,
1257 copy_verf(conf, &verf); 1261 copy_verf(conf, &verf);
1258 new = conf; 1262 new = conf;
1259 goto out_copy; 1263 goto out_copy;
1260 } else { 1264 }
1261 /* 18.35.4 case 7 */ 1265
1262 if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) { 1266 /* 18.35.4 case 7 */
1263 status = nfserr_noent; 1267 if (exid->flags & EXCHGID4_FLAG_UPD_CONFIRMED_REC_A) {
1264 goto out; 1268 status = nfserr_noent;
1265 } 1269 goto out;
1266 } 1270 }
1267 1271
1268 unconf = find_unconfirmed_client_by_str(dname, strhashval, true); 1272 unconf = find_unconfirmed_client_by_str(dname, strhashval, true);
@@ -1471,7 +1475,7 @@ nfsd4_sequence(struct svc_rqst *rqstp,
1471 goto out; 1475 goto out;
1472 1476
1473 status = nfserr_badslot; 1477 status = nfserr_badslot;
1474 if (seq->slotid >= session->se_fnumslots) 1478 if (seq->slotid >= session->se_fchannel.maxreqs)
1475 goto out; 1479 goto out;
1476 1480
1477 slot = &session->se_slots[seq->slotid]; 1481 slot = &session->se_slots[seq->slotid];
@@ -1686,9 +1690,7 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
1686 else { 1690 else {
1687 /* XXX: We just turn off callbacks until we can handle 1691 /* XXX: We just turn off callbacks until we can handle
1688 * change request correctly. */ 1692 * change request correctly. */
1689 atomic_set(&conf->cl_callback.cb_set, 0); 1693 atomic_set(&conf->cl_cb_conn.cb_set, 0);
1690 gen_confirm(conf);
1691 nfsd4_remove_clid_dir(unconf);
1692 expire_client(unconf); 1694 expire_client(unconf);
1693 status = nfs_ok; 1695 status = nfs_ok;
1694 1696
@@ -1882,7 +1884,7 @@ init_stateid(struct nfs4_stateid *stp, struct nfs4_file *fp, struct nfsd4_open *
1882 stp->st_stateowner = sop; 1884 stp->st_stateowner = sop;
1883 get_nfs4_file(fp); 1885 get_nfs4_file(fp);
1884 stp->st_file = fp; 1886 stp->st_file = fp;
1885 stp->st_stateid.si_boot = boot_time; 1887 stp->st_stateid.si_boot = get_seconds();
1886 stp->st_stateid.si_stateownerid = sop->so_id; 1888 stp->st_stateid.si_stateownerid = sop->so_id;
1887 stp->st_stateid.si_fileid = fp->fi_id; 1889 stp->st_stateid.si_fileid = fp->fi_id;
1888 stp->st_stateid.si_generation = 0; 1890 stp->st_stateid.si_generation = 0;
@@ -2059,19 +2061,6 @@ nfs4_file_downgrade(struct file *filp, unsigned int share_access)
2059} 2061}
2060 2062
2061/* 2063/*
2062 * Recall a delegation
2063 */
2064static int
2065do_recall(void *__dp)
2066{
2067 struct nfs4_delegation *dp = __dp;
2068
2069 dp->dl_file->fi_had_conflict = true;
2070 nfsd4_cb_recall(dp);
2071 return 0;
2072}
2073
2074/*
2075 * Spawn a thread to perform a recall on the delegation represented 2064 * Spawn a thread to perform a recall on the delegation represented
2076 * by the lease (file_lock) 2065 * by the lease (file_lock)
2077 * 2066 *
@@ -2082,8 +2071,7 @@ do_recall(void *__dp)
2082static 2071static
2083void nfsd_break_deleg_cb(struct file_lock *fl) 2072void nfsd_break_deleg_cb(struct file_lock *fl)
2084{ 2073{
2085 struct nfs4_delegation *dp= (struct nfs4_delegation *)fl->fl_owner; 2074 struct nfs4_delegation *dp = (struct nfs4_delegation *)fl->fl_owner;
2086 struct task_struct *t;
2087 2075
2088 dprintk("NFSD nfsd_break_deleg_cb: dp %p fl %p\n",dp,fl); 2076 dprintk("NFSD nfsd_break_deleg_cb: dp %p fl %p\n",dp,fl);
2089 if (!dp) 2077 if (!dp)
@@ -2111,16 +2099,8 @@ void nfsd_break_deleg_cb(struct file_lock *fl)
2111 */ 2099 */
2112 fl->fl_break_time = 0; 2100 fl->fl_break_time = 0;
2113 2101
2114 t = kthread_run(do_recall, dp, "%s", "nfs4_cb_recall"); 2102 dp->dl_file->fi_had_conflict = true;
2115 if (IS_ERR(t)) { 2103 nfsd4_cb_recall(dp);
2116 struct nfs4_client *clp = dp->dl_client;
2117
2118 printk(KERN_INFO "NFSD: Callback thread failed for "
2119 "for client (clientid %08x/%08x)\n",
2120 clp->cl_clientid.cl_boot, clp->cl_clientid.cl_id);
2121 put_nfs4_client(dp->dl_client);
2122 nfs4_put_delegation(dp);
2123 }
2124} 2104}
2125 2105
2126/* 2106/*
@@ -2422,7 +2402,7 @@ nfs4_open_delegation(struct svc_fh *fh, struct nfsd4_open *open, struct nfs4_sta
2422{ 2402{
2423 struct nfs4_delegation *dp; 2403 struct nfs4_delegation *dp;
2424 struct nfs4_stateowner *sop = stp->st_stateowner; 2404 struct nfs4_stateowner *sop = stp->st_stateowner;
2425 struct nfs4_callback *cb = &sop->so_client->cl_callback; 2405 struct nfs4_cb_conn *cb = &sop->so_client->cl_cb_conn;
2426 struct file_lock fl, *flp = &fl; 2406 struct file_lock fl, *flp = &fl;
2427 int status, flag = 0; 2407 int status, flag = 0;
2428 2408
@@ -2614,7 +2594,7 @@ nfsd4_renew(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
2614 renew_client(clp); 2594 renew_client(clp);
2615 status = nfserr_cb_path_down; 2595 status = nfserr_cb_path_down;
2616 if (!list_empty(&clp->cl_delegations) 2596 if (!list_empty(&clp->cl_delegations)
2617 && !atomic_read(&clp->cl_callback.cb_set)) 2597 && !atomic_read(&clp->cl_cb_conn.cb_set))
2618 goto out; 2598 goto out;
2619 status = nfs_ok; 2599 status = nfs_ok;
2620out: 2600out:
@@ -2738,12 +2718,42 @@ nfs4_check_fh(struct svc_fh *fhp, struct nfs4_stateid *stp)
2738static int 2718static int
2739STALE_STATEID(stateid_t *stateid) 2719STALE_STATEID(stateid_t *stateid)
2740{ 2720{
2741 if (stateid->si_boot == boot_time) 2721 if (time_after((unsigned long)boot_time,
2742 return 0; 2722 (unsigned long)stateid->si_boot)) {
2743 dprintk("NFSD: stale stateid (%08x/%08x/%08x/%08x)!\n", 2723 dprintk("NFSD: stale stateid (%08x/%08x/%08x/%08x)!\n",
2744 stateid->si_boot, stateid->si_stateownerid, stateid->si_fileid, 2724 stateid->si_boot, stateid->si_stateownerid,
2745 stateid->si_generation); 2725 stateid->si_fileid, stateid->si_generation);
2746 return 1; 2726 return 1;
2727 }
2728 return 0;
2729}
2730
2731static int
2732EXPIRED_STATEID(stateid_t *stateid)
2733{
2734 if (time_before((unsigned long)boot_time,
2735 ((unsigned long)stateid->si_boot)) &&
2736 time_before((unsigned long)(stateid->si_boot + lease_time), get_seconds())) {
2737 dprintk("NFSD: expired stateid (%08x/%08x/%08x/%08x)!\n",
2738 stateid->si_boot, stateid->si_stateownerid,
2739 stateid->si_fileid, stateid->si_generation);
2740 return 1;
2741 }
2742 return 0;
2743}
2744
2745static __be32
2746stateid_error_map(stateid_t *stateid)
2747{
2748 if (STALE_STATEID(stateid))
2749 return nfserr_stale_stateid;
2750 if (EXPIRED_STATEID(stateid))
2751 return nfserr_expired;
2752
2753 dprintk("NFSD: bad stateid (%08x/%08x/%08x/%08x)!\n",
2754 stateid->si_boot, stateid->si_stateownerid,
2755 stateid->si_fileid, stateid->si_generation);
2756 return nfserr_bad_stateid;
2747} 2757}
2748 2758
2749static inline int 2759static inline int
@@ -2867,8 +2877,10 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
2867 status = nfserr_bad_stateid; 2877 status = nfserr_bad_stateid;
2868 if (is_delegation_stateid(stateid)) { 2878 if (is_delegation_stateid(stateid)) {
2869 dp = find_delegation_stateid(ino, stateid); 2879 dp = find_delegation_stateid(ino, stateid);
2870 if (!dp) 2880 if (!dp) {
2881 status = stateid_error_map(stateid);
2871 goto out; 2882 goto out;
2883 }
2872 status = check_stateid_generation(stateid, &dp->dl_stateid, 2884 status = check_stateid_generation(stateid, &dp->dl_stateid,
2873 flags); 2885 flags);
2874 if (status) 2886 if (status)
@@ -2881,8 +2893,10 @@ nfs4_preprocess_stateid_op(struct nfsd4_compound_state *cstate,
2881 *filpp = dp->dl_vfs_file; 2893 *filpp = dp->dl_vfs_file;
2882 } else { /* open or lock stateid */ 2894 } else { /* open or lock stateid */
2883 stp = find_stateid(stateid, flags); 2895 stp = find_stateid(stateid, flags);
2884 if (!stp) 2896 if (!stp) {
2897 status = stateid_error_map(stateid);
2885 goto out; 2898 goto out;
2899 }
2886 if (nfs4_check_fh(current_fh, stp)) 2900 if (nfs4_check_fh(current_fh, stp))
2887 goto out; 2901 goto out;
2888 if (!stp->st_stateowner->so_confirmed) 2902 if (!stp->st_stateowner->so_confirmed)
@@ -2956,7 +2970,7 @@ nfs4_preprocess_seqid_op(struct nfsd4_compound_state *cstate, u32 seqid,
2956 */ 2970 */
2957 sop = search_close_lru(stateid->si_stateownerid, flags); 2971 sop = search_close_lru(stateid->si_stateownerid, flags);
2958 if (sop == NULL) 2972 if (sop == NULL)
2959 return nfserr_bad_stateid; 2973 return stateid_error_map(stateid);
2960 *sopp = sop; 2974 *sopp = sop;
2961 goto check_replay; 2975 goto check_replay;
2962 } 2976 }
@@ -3227,8 +3241,10 @@ nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
3227 if (!is_delegation_stateid(stateid)) 3241 if (!is_delegation_stateid(stateid))
3228 goto out; 3242 goto out;
3229 dp = find_delegation_stateid(inode, stateid); 3243 dp = find_delegation_stateid(inode, stateid);
3230 if (!dp) 3244 if (!dp) {
3245 status = stateid_error_map(stateid);
3231 goto out; 3246 goto out;
3247 }
3232 status = check_stateid_generation(stateid, &dp->dl_stateid, flags); 3248 status = check_stateid_generation(stateid, &dp->dl_stateid, flags);
3233 if (status) 3249 if (status)
3234 goto out; 3250 goto out;
@@ -3455,7 +3471,7 @@ alloc_init_lock_stateid(struct nfs4_stateowner *sop, struct nfs4_file *fp, struc
3455 stp->st_stateowner = sop; 3471 stp->st_stateowner = sop;
3456 get_nfs4_file(fp); 3472 get_nfs4_file(fp);
3457 stp->st_file = fp; 3473 stp->st_file = fp;
3458 stp->st_stateid.si_boot = boot_time; 3474 stp->st_stateid.si_boot = get_seconds();
3459 stp->st_stateid.si_stateownerid = sop->so_id; 3475 stp->st_stateid.si_stateownerid = sop->so_id;
3460 stp->st_stateid.si_fileid = fp->fi_id; 3476 stp->st_stateid.si_fileid = fp->fi_id;
3461 stp->st_stateid.si_generation = 0; 3477 stp->st_stateid.si_generation = 0;
@@ -3987,6 +4003,7 @@ nfs4_state_init(void)
3987 INIT_LIST_HEAD(&conf_str_hashtbl[i]); 4003 INIT_LIST_HEAD(&conf_str_hashtbl[i]);
3988 INIT_LIST_HEAD(&unconf_str_hashtbl[i]); 4004 INIT_LIST_HEAD(&unconf_str_hashtbl[i]);
3989 INIT_LIST_HEAD(&unconf_id_hashtbl[i]); 4005 INIT_LIST_HEAD(&unconf_id_hashtbl[i]);
4006 INIT_LIST_HEAD(&reclaim_str_hashtbl[i]);
3990 } 4007 }
3991 for (i = 0; i < SESSION_HASH_SIZE; i++) 4008 for (i = 0; i < SESSION_HASH_SIZE; i++)
3992 INIT_LIST_HEAD(&sessionid_hashtbl[i]); 4009 INIT_LIST_HEAD(&sessionid_hashtbl[i]);
@@ -4009,8 +4026,6 @@ nfs4_state_init(void)
4009 INIT_LIST_HEAD(&close_lru); 4026 INIT_LIST_HEAD(&close_lru);
4010 INIT_LIST_HEAD(&client_lru); 4027 INIT_LIST_HEAD(&client_lru);
4011 INIT_LIST_HEAD(&del_recall_lru); 4028 INIT_LIST_HEAD(&del_recall_lru);
4012 for (i = 0; i < CLIENT_HASH_SIZE; i++)
4013 INIT_LIST_HEAD(&reclaim_str_hashtbl[i]);
4014 reclaim_str_hashtbl_size = 0; 4029 reclaim_str_hashtbl_size = 0;
4015 return 0; 4030 return 0;
4016} 4031}
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index b73549d293be..2dcc7feaa6ff 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -83,16 +83,6 @@ check_filename(char *str, int len, __be32 err)
83 return 0; 83 return 0;
84} 84}
85 85
86/*
87 * START OF "GENERIC" DECODE ROUTINES.
88 * These may look a little ugly since they are imported from a "generic"
89 * set of XDR encode/decode routines which are intended to be shared by
90 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
91 *
92 * If the pain of reading these is too great, it should be a straightforward
93 * task to translate them into Linux-specific versions which are more
94 * consistent with the style used in NFSv2/v3...
95 */
96#define DECODE_HEAD \ 86#define DECODE_HEAD \
97 __be32 *p; \ 87 __be32 *p; \
98 __be32 status 88 __be32 status
@@ -254,20 +244,8 @@ nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
254 DECODE_TAIL; 244 DECODE_TAIL;
255} 245}
256 246
257static u32 nfsd_attrmask[] = {
258 NFSD_WRITEABLE_ATTRS_WORD0,
259 NFSD_WRITEABLE_ATTRS_WORD1,
260 NFSD_WRITEABLE_ATTRS_WORD2
261};
262
263static u32 nfsd41_ex_attrmask[] = {
264 NFSD_SUPPATTR_EXCLCREAT_WORD0,
265 NFSD_SUPPATTR_EXCLCREAT_WORD1,
266 NFSD_SUPPATTR_EXCLCREAT_WORD2
267};
268
269static __be32 247static __be32
270nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable, 248nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,
271 struct iattr *iattr, struct nfs4_acl **acl) 249 struct iattr *iattr, struct nfs4_acl **acl)
272{ 250{
273 int expected_len, len = 0; 251 int expected_len, len = 0;
@@ -280,18 +258,6 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable,
280 if ((status = nfsd4_decode_bitmap(argp, bmval))) 258 if ((status = nfsd4_decode_bitmap(argp, bmval)))
281 return status; 259 return status;
282 260
283 /*
284 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP;
285 * read-only attributes return ERR_INVAL.
286 */
287 if ((bmval[0] & ~nfsd_suppattrs0(argp->minorversion)) ||
288 (bmval[1] & ~nfsd_suppattrs1(argp->minorversion)) ||
289 (bmval[2] & ~nfsd_suppattrs2(argp->minorversion)))
290 return nfserr_attrnotsupp;
291 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
292 (bmval[2] & ~writable[2]))
293 return nfserr_inval;
294
295 READ_BUF(4); 261 READ_BUF(4);
296 READ32(expected_len); 262 READ32(expected_len);
297 263
@@ -424,8 +390,11 @@ nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable,
424 goto xdr_error; 390 goto xdr_error;
425 } 391 }
426 } 392 }
427 BUG_ON(bmval[2]); /* no such writeable attr supported yet */ 393 if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0
428 if (len != expected_len) 394 || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1
395 || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2)
396 READ_BUF(expected_len - len);
397 else if (len != expected_len)
429 goto xdr_error; 398 goto xdr_error;
430 399
431 DECODE_TAIL; 400 DECODE_TAIL;
@@ -518,8 +487,8 @@ nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create
518 if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) 487 if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval)))
519 return status; 488 return status;
520 489
521 status = nfsd4_decode_fattr(argp, create->cr_bmval, nfsd_attrmask, 490 status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr,
522 &create->cr_iattr, &create->cr_acl); 491 &create->cr_acl);
523 if (status) 492 if (status)
524 goto out; 493 goto out;
525 494
@@ -682,7 +651,7 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
682 case NFS4_CREATE_UNCHECKED: 651 case NFS4_CREATE_UNCHECKED:
683 case NFS4_CREATE_GUARDED: 652 case NFS4_CREATE_GUARDED:
684 status = nfsd4_decode_fattr(argp, open->op_bmval, 653 status = nfsd4_decode_fattr(argp, open->op_bmval,
685 nfsd_attrmask, &open->op_iattr, &open->op_acl); 654 &open->op_iattr, &open->op_acl);
686 if (status) 655 if (status)
687 goto out; 656 goto out;
688 break; 657 break;
@@ -696,8 +665,7 @@ nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
696 READ_BUF(8); 665 READ_BUF(8);
697 COPYMEM(open->op_verf.data, 8); 666 COPYMEM(open->op_verf.data, 8);
698 status = nfsd4_decode_fattr(argp, open->op_bmval, 667 status = nfsd4_decode_fattr(argp, open->op_bmval,
699 nfsd41_ex_attrmask, &open->op_iattr, 668 &open->op_iattr, &open->op_acl);
700 &open->op_acl);
701 if (status) 669 if (status)
702 goto out; 670 goto out;
703 break; 671 break;
@@ -893,8 +861,8 @@ nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *seta
893 status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); 861 status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);
894 if (status) 862 if (status)
895 return status; 863 return status;
896 return nfsd4_decode_fattr(argp, setattr->sa_bmval, nfsd_attrmask, 864 return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr,
897 &setattr->sa_iattr, &setattr->sa_acl); 865 &setattr->sa_acl);
898} 866}
899 867
900static __be32 868static __be32
@@ -1328,64 +1296,64 @@ static nfsd4_dec nfsd4_dec_ops[] = {
1328}; 1296};
1329 1297
1330static nfsd4_dec nfsd41_dec_ops[] = { 1298static nfsd4_dec nfsd41_dec_ops[] = {
1331 [OP_ACCESS] (nfsd4_dec)nfsd4_decode_access, 1299 [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
1332 [OP_CLOSE] (nfsd4_dec)nfsd4_decode_close, 1300 [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
1333 [OP_COMMIT] (nfsd4_dec)nfsd4_decode_commit, 1301 [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
1334 [OP_CREATE] (nfsd4_dec)nfsd4_decode_create, 1302 [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create,
1335 [OP_DELEGPURGE] (nfsd4_dec)nfsd4_decode_notsupp, 1303 [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp,
1336 [OP_DELEGRETURN] (nfsd4_dec)nfsd4_decode_delegreturn, 1304 [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn,
1337 [OP_GETATTR] (nfsd4_dec)nfsd4_decode_getattr, 1305 [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr,
1338 [OP_GETFH] (nfsd4_dec)nfsd4_decode_noop, 1306 [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop,
1339 [OP_LINK] (nfsd4_dec)nfsd4_decode_link, 1307 [OP_LINK] = (nfsd4_dec)nfsd4_decode_link,
1340 [OP_LOCK] (nfsd4_dec)nfsd4_decode_lock, 1308 [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock,
1341 [OP_LOCKT] (nfsd4_dec)nfsd4_decode_lockt, 1309 [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt,
1342 [OP_LOCKU] (nfsd4_dec)nfsd4_decode_locku, 1310 [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku,
1343 [OP_LOOKUP] (nfsd4_dec)nfsd4_decode_lookup, 1311 [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup,
1344 [OP_LOOKUPP] (nfsd4_dec)nfsd4_decode_noop, 1312 [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop,
1345 [OP_NVERIFY] (nfsd4_dec)nfsd4_decode_verify, 1313 [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify,
1346 [OP_OPEN] (nfsd4_dec)nfsd4_decode_open, 1314 [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open,
1347 [OP_OPENATTR] (nfsd4_dec)nfsd4_decode_notsupp, 1315 [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp,
1348 [OP_OPEN_CONFIRM] (nfsd4_dec)nfsd4_decode_notsupp, 1316 [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp,
1349 [OP_OPEN_DOWNGRADE] (nfsd4_dec)nfsd4_decode_open_downgrade, 1317 [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade,
1350 [OP_PUTFH] (nfsd4_dec)nfsd4_decode_putfh, 1318 [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh,
1351 [OP_PUTPUBFH] (nfsd4_dec)nfsd4_decode_notsupp, 1319 [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp,
1352 [OP_PUTROOTFH] (nfsd4_dec)nfsd4_decode_noop, 1320 [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop,
1353 [OP_READ] (nfsd4_dec)nfsd4_decode_read, 1321 [OP_READ] = (nfsd4_dec)nfsd4_decode_read,
1354 [OP_READDIR] (nfsd4_dec)nfsd4_decode_readdir, 1322 [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir,
1355 [OP_READLINK] (nfsd4_dec)nfsd4_decode_noop, 1323 [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop,
1356 [OP_REMOVE] (nfsd4_dec)nfsd4_decode_remove, 1324 [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove,
1357 [OP_RENAME] (nfsd4_dec)nfsd4_decode_rename, 1325 [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename,
1358 [OP_RENEW] (nfsd4_dec)nfsd4_decode_notsupp, 1326 [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp,
1359 [OP_RESTOREFH] (nfsd4_dec)nfsd4_decode_noop, 1327 [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop,
1360 [OP_SAVEFH] (nfsd4_dec)nfsd4_decode_noop, 1328 [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop,
1361 [OP_SECINFO] (nfsd4_dec)nfsd4_decode_secinfo, 1329 [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo,
1362 [OP_SETATTR] (nfsd4_dec)nfsd4_decode_setattr, 1330 [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr,
1363 [OP_SETCLIENTID] (nfsd4_dec)nfsd4_decode_notsupp, 1331 [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
1364 [OP_SETCLIENTID_CONFIRM](nfsd4_dec)nfsd4_decode_notsupp, 1332 [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp,
1365 [OP_VERIFY] (nfsd4_dec)nfsd4_decode_verify, 1333 [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify,
1366 [OP_WRITE] (nfsd4_dec)nfsd4_decode_write, 1334 [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write,
1367 [OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_notsupp, 1335 [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp,
1368 1336
1369 /* new operations for NFSv4.1 */ 1337 /* new operations for NFSv4.1 */
1370 [OP_BACKCHANNEL_CTL] (nfsd4_dec)nfsd4_decode_notsupp, 1338 [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp,
1371 [OP_BIND_CONN_TO_SESSION](nfsd4_dec)nfsd4_decode_notsupp, 1339 [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_notsupp,
1372 [OP_EXCHANGE_ID] (nfsd4_dec)nfsd4_decode_exchange_id, 1340 [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id,
1373 [OP_CREATE_SESSION] (nfsd4_dec)nfsd4_decode_create_session, 1341 [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session,
1374 [OP_DESTROY_SESSION] (nfsd4_dec)nfsd4_decode_destroy_session, 1342 [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session,
1375 [OP_FREE_STATEID] (nfsd4_dec)nfsd4_decode_notsupp, 1343 [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
1376 [OP_GET_DIR_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp, 1344 [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
1377 [OP_GETDEVICEINFO] (nfsd4_dec)nfsd4_decode_notsupp, 1345 [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp,
1378 [OP_GETDEVICELIST] (nfsd4_dec)nfsd4_decode_notsupp, 1346 [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp,
1379 [OP_LAYOUTCOMMIT] (nfsd4_dec)nfsd4_decode_notsupp, 1347 [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp,
1380 [OP_LAYOUTGET] (nfsd4_dec)nfsd4_decode_notsupp, 1348 [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp,
1381 [OP_LAYOUTRETURN] (nfsd4_dec)nfsd4_decode_notsupp, 1349 [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp,
1382 [OP_SECINFO_NO_NAME] (nfsd4_dec)nfsd4_decode_notsupp, 1350 [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_notsupp,
1383 [OP_SEQUENCE] (nfsd4_dec)nfsd4_decode_sequence, 1351 [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence,
1384 [OP_SET_SSV] (nfsd4_dec)nfsd4_decode_notsupp, 1352 [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp,
1385 [OP_TEST_STATEID] (nfsd4_dec)nfsd4_decode_notsupp, 1353 [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp,
1386 [OP_WANT_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp, 1354 [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp,
1387 [OP_DESTROY_CLIENTID] (nfsd4_dec)nfsd4_decode_notsupp, 1355 [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp,
1388 [OP_RECLAIM_COMPLETE] (nfsd4_dec)nfsd4_decode_notsupp, 1356 [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_notsupp,
1389}; 1357};
1390 1358
1391struct nfsd4_minorversion_ops { 1359struct nfsd4_minorversion_ops {
@@ -1489,21 +1457,6 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
1489 1457
1490 DECODE_TAIL; 1458 DECODE_TAIL;
1491} 1459}
1492/*
1493 * END OF "GENERIC" DECODE ROUTINES.
1494 */
1495
1496/*
1497 * START OF "GENERIC" ENCODE ROUTINES.
1498 * These may look a little ugly since they are imported from a "generic"
1499 * set of XDR encode/decode routines which are intended to be shared by
1500 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1501 *
1502 * If the pain of reading these is too great, it should be a straightforward
1503 * task to translate them into Linux-specific versions which are more
1504 * consistent with the style used in NFSv2/v3...
1505 */
1506#define ENCODE_HEAD __be32 *p
1507 1460
1508#define WRITE32(n) *p++ = htonl(n) 1461#define WRITE32(n) *p++ = htonl(n)
1509#define WRITE64(n) do { \ 1462#define WRITE64(n) do { \
@@ -1515,13 +1468,41 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp)
1515 memcpy(p, ptr, nbytes); \ 1468 memcpy(p, ptr, nbytes); \
1516 p += XDR_QUADLEN(nbytes); \ 1469 p += XDR_QUADLEN(nbytes); \
1517}} while (0) 1470}} while (0)
1518#define WRITECINFO(c) do { \ 1471
1519 *p++ = htonl(c.atomic); \ 1472static void write32(__be32 **p, u32 n)
1520 *p++ = htonl(c.before_ctime_sec); \ 1473{
1521 *p++ = htonl(c.before_ctime_nsec); \ 1474 *(*p)++ = n;
1522 *p++ = htonl(c.after_ctime_sec); \ 1475}
1523 *p++ = htonl(c.after_ctime_nsec); \ 1476
1524} while (0) 1477static void write64(__be32 **p, u64 n)
1478{
1479 write32(p, (u32)(n >> 32));
1480 write32(p, (u32)n);
1481}
1482
1483static void write_change(__be32 **p, struct kstat *stat, struct inode *inode)
1484{
1485 if (IS_I_VERSION(inode)) {
1486 write64(p, inode->i_version);
1487 } else {
1488 write32(p, stat->ctime.tv_sec);
1489 write32(p, stat->ctime.tv_nsec);
1490 }
1491}
1492
1493static void write_cinfo(__be32 **p, struct nfsd4_change_info *c)
1494{
1495 write32(p, c->atomic);
1496 if (c->change_supported) {
1497 write64(p, c->before_change);
1498 write64(p, c->after_change);
1499 } else {
1500 write32(p, c->before_ctime_sec);
1501 write32(p, c->before_ctime_nsec);
1502 write32(p, c->after_ctime_sec);
1503 write32(p, c->after_ctime_nsec);
1504 }
1505}
1525 1506
1526#define RESERVE_SPACE(nbytes) do { \ 1507#define RESERVE_SPACE(nbytes) do { \
1527 p = resp->p; \ 1508 p = resp->p; \
@@ -1874,16 +1855,9 @@ nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp,
1874 WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); 1855 WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME);
1875 } 1856 }
1876 if (bmval0 & FATTR4_WORD0_CHANGE) { 1857 if (bmval0 & FATTR4_WORD0_CHANGE) {
1877 /*
1878 * Note: This _must_ be consistent with the scheme for writing
1879 * change_info, so any changes made here must be reflected there
1880 * as well. (See xdr4.h:set_change_info() and the WRITECINFO()
1881 * macro above.)
1882 */
1883 if ((buflen -= 8) < 0) 1858 if ((buflen -= 8) < 0)
1884 goto out_resource; 1859 goto out_resource;
1885 WRITE32(stat.ctime.tv_sec); 1860 write_change(&p, &stat, dentry->d_inode);
1886 WRITE32(stat.ctime.tv_nsec);
1887 } 1861 }
1888 if (bmval0 & FATTR4_WORD0_SIZE) { 1862 if (bmval0 & FATTR4_WORD0_SIZE) {
1889 if ((buflen -= 8) < 0) 1863 if ((buflen -= 8) < 0)
@@ -2348,7 +2322,7 @@ fail:
2348static void 2322static void
2349nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) 2323nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
2350{ 2324{
2351 ENCODE_HEAD; 2325 __be32 *p;
2352 2326
2353 RESERVE_SPACE(sizeof(stateid_t)); 2327 RESERVE_SPACE(sizeof(stateid_t));
2354 WRITE32(sid->si_generation); 2328 WRITE32(sid->si_generation);
@@ -2359,7 +2333,7 @@ nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid)
2359static __be32 2333static __be32
2360nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) 2334nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access)
2361{ 2335{
2362 ENCODE_HEAD; 2336 __be32 *p;
2363 2337
2364 if (!nfserr) { 2338 if (!nfserr) {
2365 RESERVE_SPACE(8); 2339 RESERVE_SPACE(8);
@@ -2386,7 +2360,7 @@ nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_c
2386static __be32 2360static __be32
2387nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) 2361nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit)
2388{ 2362{
2389 ENCODE_HEAD; 2363 __be32 *p;
2390 2364
2391 if (!nfserr) { 2365 if (!nfserr) {
2392 RESERVE_SPACE(8); 2366 RESERVE_SPACE(8);
@@ -2399,11 +2373,11 @@ nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
2399static __be32 2373static __be32
2400nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) 2374nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create)
2401{ 2375{
2402 ENCODE_HEAD; 2376 __be32 *p;
2403 2377
2404 if (!nfserr) { 2378 if (!nfserr) {
2405 RESERVE_SPACE(32); 2379 RESERVE_SPACE(32);
2406 WRITECINFO(create->cr_cinfo); 2380 write_cinfo(&p, &create->cr_cinfo);
2407 WRITE32(2); 2381 WRITE32(2);
2408 WRITE32(create->cr_bmval[0]); 2382 WRITE32(create->cr_bmval[0]);
2409 WRITE32(create->cr_bmval[1]); 2383 WRITE32(create->cr_bmval[1]);
@@ -2435,7 +2409,7 @@ nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh
2435{ 2409{
2436 struct svc_fh *fhp = *fhpp; 2410 struct svc_fh *fhp = *fhpp;
2437 unsigned int len; 2411 unsigned int len;
2438 ENCODE_HEAD; 2412 __be32 *p;
2439 2413
2440 if (!nfserr) { 2414 if (!nfserr) {
2441 len = fhp->fh_handle.fh_size; 2415 len = fhp->fh_handle.fh_size;
@@ -2454,7 +2428,7 @@ nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh
2454static void 2428static void
2455nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) 2429nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld)
2456{ 2430{
2457 ENCODE_HEAD; 2431 __be32 *p;
2458 2432
2459 RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); 2433 RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0));
2460 WRITE64(ld->ld_start); 2434 WRITE64(ld->ld_start);
@@ -2510,11 +2484,11 @@ nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_l
2510static __be32 2484static __be32
2511nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) 2485nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link)
2512{ 2486{
2513 ENCODE_HEAD; 2487 __be32 *p;
2514 2488
2515 if (!nfserr) { 2489 if (!nfserr) {
2516 RESERVE_SPACE(20); 2490 RESERVE_SPACE(20);
2517 WRITECINFO(link->li_cinfo); 2491 write_cinfo(&p, &link->li_cinfo);
2518 ADJUST_ARGS(); 2492 ADJUST_ARGS();
2519 } 2493 }
2520 return nfserr; 2494 return nfserr;
@@ -2524,7 +2498,7 @@ nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_li
2524static __be32 2498static __be32
2525nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) 2499nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open)
2526{ 2500{
2527 ENCODE_HEAD; 2501 __be32 *p;
2528 ENCODE_SEQID_OP_HEAD; 2502 ENCODE_SEQID_OP_HEAD;
2529 2503
2530 if (nfserr) 2504 if (nfserr)
@@ -2532,7 +2506,7 @@ nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_op
2532 2506
2533 nfsd4_encode_stateid(resp, &open->op_stateid); 2507 nfsd4_encode_stateid(resp, &open->op_stateid);
2534 RESERVE_SPACE(40); 2508 RESERVE_SPACE(40);
2535 WRITECINFO(open->op_cinfo); 2509 write_cinfo(&p, &open->op_cinfo);
2536 WRITE32(open->op_rflags); 2510 WRITE32(open->op_rflags);
2537 WRITE32(2); 2511 WRITE32(2);
2538 WRITE32(open->op_bmval[0]); 2512 WRITE32(open->op_bmval[0]);
@@ -2619,7 +2593,7 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
2619 int v, pn; 2593 int v, pn;
2620 unsigned long maxcount; 2594 unsigned long maxcount;
2621 long len; 2595 long len;
2622 ENCODE_HEAD; 2596 __be32 *p;
2623 2597
2624 if (nfserr) 2598 if (nfserr)
2625 return nfserr; 2599 return nfserr;
@@ -2681,7 +2655,7 @@ nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd
2681{ 2655{
2682 int maxcount; 2656 int maxcount;
2683 char *page; 2657 char *page;
2684 ENCODE_HEAD; 2658 __be32 *p;
2685 2659
2686 if (nfserr) 2660 if (nfserr)
2687 return nfserr; 2661 return nfserr;
@@ -2730,7 +2704,7 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
2730 int maxcount; 2704 int maxcount;
2731 loff_t offset; 2705 loff_t offset;
2732 __be32 *page, *savep, *tailbase; 2706 __be32 *page, *savep, *tailbase;
2733 ENCODE_HEAD; 2707 __be32 *p;
2734 2708
2735 if (nfserr) 2709 if (nfserr)
2736 return nfserr; 2710 return nfserr;
@@ -2806,11 +2780,11 @@ err_no_verf:
2806static __be32 2780static __be32
2807nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) 2781nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove)
2808{ 2782{
2809 ENCODE_HEAD; 2783 __be32 *p;
2810 2784
2811 if (!nfserr) { 2785 if (!nfserr) {
2812 RESERVE_SPACE(20); 2786 RESERVE_SPACE(20);
2813 WRITECINFO(remove->rm_cinfo); 2787 write_cinfo(&p, &remove->rm_cinfo);
2814 ADJUST_ARGS(); 2788 ADJUST_ARGS();
2815 } 2789 }
2816 return nfserr; 2790 return nfserr;
@@ -2819,12 +2793,12 @@ nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_
2819static __be32 2793static __be32
2820nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) 2794nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename)
2821{ 2795{
2822 ENCODE_HEAD; 2796 __be32 *p;
2823 2797
2824 if (!nfserr) { 2798 if (!nfserr) {
2825 RESERVE_SPACE(40); 2799 RESERVE_SPACE(40);
2826 WRITECINFO(rename->rn_sinfo); 2800 write_cinfo(&p, &rename->rn_sinfo);
2827 WRITECINFO(rename->rn_tinfo); 2801 write_cinfo(&p, &rename->rn_tinfo);
2828 ADJUST_ARGS(); 2802 ADJUST_ARGS();
2829 } 2803 }
2830 return nfserr; 2804 return nfserr;
@@ -2839,7 +2813,7 @@ nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr,
2839 u32 nflavs; 2813 u32 nflavs;
2840 struct exp_flavor_info *flavs; 2814 struct exp_flavor_info *flavs;
2841 struct exp_flavor_info def_flavs[2]; 2815 struct exp_flavor_info def_flavs[2];
2842 ENCODE_HEAD; 2816 __be32 *p;
2843 2817
2844 if (nfserr) 2818 if (nfserr)
2845 goto out; 2819 goto out;
@@ -2904,7 +2878,7 @@ out:
2904static __be32 2878static __be32
2905nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) 2879nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr)
2906{ 2880{
2907 ENCODE_HEAD; 2881 __be32 *p;
2908 2882
2909 RESERVE_SPACE(12); 2883 RESERVE_SPACE(12);
2910 if (nfserr) { 2884 if (nfserr) {
@@ -2924,7 +2898,7 @@ nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4
2924static __be32 2898static __be32
2925nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) 2899nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd)
2926{ 2900{
2927 ENCODE_HEAD; 2901 __be32 *p;
2928 2902
2929 if (!nfserr) { 2903 if (!nfserr) {
2930 RESERVE_SPACE(8 + sizeof(nfs4_verifier)); 2904 RESERVE_SPACE(8 + sizeof(nfs4_verifier));
@@ -2944,7 +2918,7 @@ nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct n
2944static __be32 2918static __be32
2945nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) 2919nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write)
2946{ 2920{
2947 ENCODE_HEAD; 2921 __be32 *p;
2948 2922
2949 if (!nfserr) { 2923 if (!nfserr) {
2950 RESERVE_SPACE(16); 2924 RESERVE_SPACE(16);
@@ -2960,7 +2934,7 @@ static __be32
2960nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, 2934nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr,
2961 struct nfsd4_exchange_id *exid) 2935 struct nfsd4_exchange_id *exid)
2962{ 2936{
2963 ENCODE_HEAD; 2937 __be32 *p;
2964 char *major_id; 2938 char *major_id;
2965 char *server_scope; 2939 char *server_scope;
2966 int major_id_sz; 2940 int major_id_sz;
@@ -3015,7 +2989,7 @@ static __be32
3015nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, 2989nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr,
3016 struct nfsd4_create_session *sess) 2990 struct nfsd4_create_session *sess)
3017{ 2991{
3018 ENCODE_HEAD; 2992 __be32 *p;
3019 2993
3020 if (nfserr) 2994 if (nfserr)
3021 return nfserr; 2995 return nfserr;
@@ -3071,7 +3045,7 @@ __be32
3071nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, 3045nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
3072 struct nfsd4_sequence *seq) 3046 struct nfsd4_sequence *seq)
3073{ 3047{
3074 ENCODE_HEAD; 3048 __be32 *p;
3075 3049
3076 if (nfserr) 3050 if (nfserr)
3077 return nfserr; 3051 return nfserr;
@@ -3209,7 +3183,7 @@ static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp)
3209 dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, 3183 dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__,
3210 length, xb->page_len, tlen, pad); 3184 length, xb->page_len, tlen, pad);
3211 3185
3212 if (length <= session->se_fmaxresp_cached) 3186 if (length <= session->se_fchannel.maxresp_cached)
3213 return status; 3187 return status;
3214 else 3188 else
3215 return nfserr_rep_too_big_to_cache; 3189 return nfserr_rep_too_big_to_cache;
@@ -3219,7 +3193,7 @@ void
3219nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) 3193nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
3220{ 3194{
3221 __be32 *statp; 3195 __be32 *statp;
3222 ENCODE_HEAD; 3196 __be32 *p;
3223 3197
3224 RESERVE_SPACE(8); 3198 RESERVE_SPACE(8);
3225 WRITE32(op->opnum); 3199 WRITE32(op->opnum);
@@ -3253,7 +3227,7 @@ status:
3253void 3227void
3254nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) 3228nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
3255{ 3229{
3256 ENCODE_HEAD; 3230 __be32 *p;
3257 struct nfs4_replay *rp = op->replay; 3231 struct nfs4_replay *rp = op->replay;
3258 3232
3259 BUG_ON(!rp); 3233 BUG_ON(!rp);
@@ -3268,10 +3242,6 @@ nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op)
3268 ADJUST_ARGS(); 3242 ADJUST_ARGS();
3269} 3243}
3270 3244
3271/*
3272 * END OF "GENERIC" ENCODE ROUTINES.
3273 */
3274
3275int 3245int
3276nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) 3246nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy)
3277{ 3247{
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 5bfc2ac60d54..4638635c5d87 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -29,15 +29,24 @@
29 */ 29 */
30#define CACHESIZE 1024 30#define CACHESIZE 1024
31#define HASHSIZE 64 31#define HASHSIZE 64
32#define REQHASH(xid) (((((__force __u32)xid) >> 24) ^ ((__force __u32)xid)) & (HASHSIZE-1))
33 32
34static struct hlist_head * hash_list; 33static struct hlist_head * cache_hash;
35static struct list_head lru_head; 34static struct list_head lru_head;
36static int cache_disabled = 1; 35static int cache_disabled = 1;
37 36
37/*
38 * Calculate the hash index from an XID.
39 */
40static inline u32 request_hash(u32 xid)
41{
42 u32 h = xid;
43 h ^= (xid >> 24);
44 return h & (HASHSIZE-1);
45}
46
38static int nfsd_cache_append(struct svc_rqst *rqstp, struct kvec *vec); 47static int nfsd_cache_append(struct svc_rqst *rqstp, struct kvec *vec);
39 48
40/* 49/*
41 * locking for the reply cache: 50 * locking for the reply cache:
42 * A cache entry is "single use" if c_state == RC_INPROG 51 * A cache entry is "single use" if c_state == RC_INPROG
43 * Otherwise, it when accessing _prev or _next, the lock must be held. 52 * Otherwise, it when accessing _prev or _next, the lock must be held.
@@ -62,8 +71,8 @@ int nfsd_reply_cache_init(void)
62 i--; 71 i--;
63 } 72 }
64 73
65 hash_list = kcalloc (HASHSIZE, sizeof(struct hlist_head), GFP_KERNEL); 74 cache_hash = kcalloc (HASHSIZE, sizeof(struct hlist_head), GFP_KERNEL);
66 if (!hash_list) 75 if (!cache_hash)
67 goto out_nomem; 76 goto out_nomem;
68 77
69 cache_disabled = 0; 78 cache_disabled = 0;
@@ -88,8 +97,8 @@ void nfsd_reply_cache_shutdown(void)
88 97
89 cache_disabled = 1; 98 cache_disabled = 1;
90 99
91 kfree (hash_list); 100 kfree (cache_hash);
92 hash_list = NULL; 101 cache_hash = NULL;
93} 102}
94 103
95/* 104/*
@@ -108,7 +117,7 @@ static void
108hash_refile(struct svc_cacherep *rp) 117hash_refile(struct svc_cacherep *rp)
109{ 118{
110 hlist_del_init(&rp->c_hash); 119 hlist_del_init(&rp->c_hash);
111 hlist_add_head(&rp->c_hash, hash_list + REQHASH(rp->c_xid)); 120 hlist_add_head(&rp->c_hash, cache_hash + request_hash(rp->c_xid));
112} 121}
113 122
114/* 123/*
@@ -138,7 +147,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
138 spin_lock(&cache_lock); 147 spin_lock(&cache_lock);
139 rtn = RC_DOIT; 148 rtn = RC_DOIT;
140 149
141 rh = &hash_list[REQHASH(xid)]; 150 rh = &cache_hash[request_hash(xid)];
142 hlist_for_each_entry(rp, hn, rh, c_hash) { 151 hlist_for_each_entry(rp, hn, rh, c_hash) {
143 if (rp->c_state != RC_UNUSED && 152 if (rp->c_state != RC_UNUSED &&
144 xid == rp->c_xid && proc == rp->c_proc && 153 xid == rp->c_xid && proc == rp->c_proc &&
@@ -165,8 +174,8 @@ nfsd_cache_lookup(struct svc_rqst *rqstp, int type)
165 } 174 }
166 } 175 }
167 176
168 /* This should not happen */ 177 /* All entries on the LRU are in-progress. This should not happen */
169 if (rp == NULL) { 178 if (&rp->c_lru == &lru_head) {
170 static int complaints; 179 static int complaints;
171 180
172 printk(KERN_WARNING "nfsd: all repcache entries locked!\n"); 181 printk(KERN_WARNING "nfsd: all repcache entries locked!\n");
@@ -264,7 +273,7 @@ nfsd_cache_update(struct svc_rqst *rqstp, int cachetype, __be32 *statp)
264 273
265 len = resv->iov_len - ((char*)statp - (char*)resv->iov_base); 274 len = resv->iov_len - ((char*)statp - (char*)resv->iov_base);
266 len >>= 2; 275 len >>= 2;
267 276
268 /* Don't cache excessive amounts of data and XDR failures */ 277 /* Don't cache excessive amounts of data and XDR failures */
269 if (!statp || len > (256 >> 2)) { 278 if (!statp || len > (256 >> 2)) {
270 rp->c_state = RC_UNUSED; 279 rp->c_state = RC_UNUSED;
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index af16849d243a..1250fb978ac1 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -207,10 +207,14 @@ static struct file_operations pool_stats_operations = {
207static ssize_t write_svc(struct file *file, char *buf, size_t size) 207static ssize_t write_svc(struct file *file, char *buf, size_t size)
208{ 208{
209 struct nfsctl_svc *data; 209 struct nfsctl_svc *data;
210 int err;
210 if (size < sizeof(*data)) 211 if (size < sizeof(*data))
211 return -EINVAL; 212 return -EINVAL;
212 data = (struct nfsctl_svc*) buf; 213 data = (struct nfsctl_svc*) buf;
213 return nfsd_svc(data->svc_port, data->svc_nthreads); 214 err = nfsd_svc(data->svc_port, data->svc_nthreads);
215 if (err < 0)
216 return err;
217 return 0;
214} 218}
215 219
216/** 220/**
@@ -692,11 +696,12 @@ static ssize_t write_threads(struct file *file, char *buf, size_t size)
692 if (newthreads < 0) 696 if (newthreads < 0)
693 return -EINVAL; 697 return -EINVAL;
694 rv = nfsd_svc(NFS_PORT, newthreads); 698 rv = nfsd_svc(NFS_PORT, newthreads);
695 if (rv) 699 if (rv < 0)
696 return rv; 700 return rv;
697 } 701 } else
698 sprintf(buf, "%d\n", nfsd_nrthreads()); 702 rv = nfsd_nrthreads();
699 return strlen(buf); 703
704 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
700} 705}
701 706
702/** 707/**
@@ -793,7 +798,7 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
793{ 798{
794 char *mesg = buf; 799 char *mesg = buf;
795 char *vers, *minorp, sign; 800 char *vers, *minorp, sign;
796 int len, num; 801 int len, num, remaining;
797 unsigned minor; 802 unsigned minor;
798 ssize_t tlen = 0; 803 ssize_t tlen = 0;
799 char *sep; 804 char *sep;
@@ -840,32 +845,50 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size)
840 } 845 }
841 next: 846 next:
842 vers += len + 1; 847 vers += len + 1;
843 tlen += len;
844 } while ((len = qword_get(&mesg, vers, size)) > 0); 848 } while ((len = qword_get(&mesg, vers, size)) > 0);
845 /* If all get turned off, turn them back on, as 849 /* If all get turned off, turn them back on, as
846 * having no versions is BAD 850 * having no versions is BAD
847 */ 851 */
848 nfsd_reset_versions(); 852 nfsd_reset_versions();
849 } 853 }
854
850 /* Now write current state into reply buffer */ 855 /* Now write current state into reply buffer */
851 len = 0; 856 len = 0;
852 sep = ""; 857 sep = "";
858 remaining = SIMPLE_TRANSACTION_LIMIT;
853 for (num=2 ; num <= 4 ; num++) 859 for (num=2 ; num <= 4 ; num++)
854 if (nfsd_vers(num, NFSD_AVAIL)) { 860 if (nfsd_vers(num, NFSD_AVAIL)) {
855 len += sprintf(buf+len, "%s%c%d", sep, 861 len = snprintf(buf, remaining, "%s%c%d", sep,
856 nfsd_vers(num, NFSD_TEST)?'+':'-', 862 nfsd_vers(num, NFSD_TEST)?'+':'-',
857 num); 863 num);
858 sep = " "; 864 sep = " ";
865
866 if (len > remaining)
867 break;
868 remaining -= len;
869 buf += len;
870 tlen += len;
859 } 871 }
860 if (nfsd_vers(4, NFSD_AVAIL)) 872 if (nfsd_vers(4, NFSD_AVAIL))
861 for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; minor++) 873 for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
862 len += sprintf(buf+len, " %c4.%u", 874 minor++) {
875 len = snprintf(buf, remaining, " %c4.%u",
863 (nfsd_vers(4, NFSD_TEST) && 876 (nfsd_vers(4, NFSD_TEST) &&
864 nfsd_minorversion(minor, NFSD_TEST)) ? 877 nfsd_minorversion(minor, NFSD_TEST)) ?
865 '+' : '-', 878 '+' : '-',
866 minor); 879 minor);
867 len += sprintf(buf+len, "\n"); 880
868 return len; 881 if (len > remaining)
882 break;
883 remaining -= len;
884 buf += len;
885 tlen += len;
886 }
887
888 len = snprintf(buf, remaining, "\n");
889 if (len > remaining)
890 return -EINVAL;
891 return tlen + len;
869} 892}
870 893
871/** 894/**
@@ -910,104 +933,143 @@ static ssize_t write_versions(struct file *file, char *buf, size_t size)
910 return rv; 933 return rv;
911} 934}
912 935
913static ssize_t __write_ports(struct file *file, char *buf, size_t size) 936/*
937 * Zero-length write. Return a list of NFSD's current listener
938 * transports.
939 */
940static ssize_t __write_ports_names(char *buf)
914{ 941{
915 if (size == 0) { 942 if (nfsd_serv == NULL)
916 int len = 0; 943 return 0;
944 return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
945}
917 946
918 if (nfsd_serv) 947/*
919 len = svc_xprt_names(nfsd_serv, buf, 0); 948 * A single 'fd' number was written, in which case it must be for
920 return len; 949 * a socket of a supported family/protocol, and we use it as an
921 } 950 * nfsd listener.
922 /* Either a single 'fd' number is written, in which 951 */
923 * case it must be for a socket of a supported family/protocol, 952static ssize_t __write_ports_addfd(char *buf)
924 * and we use it as an nfsd socket, or 953{
925 * A '-' followed by the 'name' of a socket in which case 954 char *mesg = buf;
926 * we close the socket. 955 int fd, err;
927 */ 956
928 if (isdigit(buf[0])) { 957 err = get_int(&mesg, &fd);
929 char *mesg = buf; 958 if (err != 0 || fd < 0)
930 int fd; 959 return -EINVAL;
931 int err; 960
932 err = get_int(&mesg, &fd); 961 err = nfsd_create_serv();
933 if (err) 962 if (err != 0)
934 return -EINVAL; 963 return err;
935 if (fd < 0) 964
936 return -EINVAL; 965 err = lockd_up();
937 err = nfsd_create_serv(); 966 if (err != 0)
938 if (!err) { 967 goto out;
939 err = svc_addsock(nfsd_serv, fd, buf); 968
940 if (err >= 0) { 969 err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
941 err = lockd_up(); 970 if (err < 0)
942 if (err < 0) 971 lockd_down();
943 svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf); 972
944 } 973out:
945 /* Decrease the count, but don't shutdown the 974 /* Decrease the count, but don't shut down the service */
946 * the service 975 nfsd_serv->sv_nrthreads--;
947 */ 976 return err;
948 nfsd_serv->sv_nrthreads--; 977}
949 } 978
950 return err < 0 ? err : 0; 979/*
951 } 980 * A '-' followed by the 'name' of a socket means we close the socket.
952 if (buf[0] == '-' && isdigit(buf[1])) { 981 */
953 char *toclose = kstrdup(buf+1, GFP_KERNEL); 982static ssize_t __write_ports_delfd(char *buf)
954 int len = 0; 983{
955 if (!toclose) 984 char *toclose;
956 return -ENOMEM; 985 int len = 0;
957 if (nfsd_serv) 986
958 len = svc_sock_names(buf, nfsd_serv, toclose); 987 toclose = kstrdup(buf + 1, GFP_KERNEL);
959 if (len >= 0) 988 if (toclose == NULL)
960 lockd_down(); 989 return -ENOMEM;
961 kfree(toclose); 990
962 return len; 991 if (nfsd_serv != NULL)
963 } 992 len = svc_sock_names(nfsd_serv, buf,
964 /* 993 SIMPLE_TRANSACTION_LIMIT, toclose);
965 * Add a transport listener by writing it's transport name 994 if (len >= 0)
966 */ 995 lockd_down();
967 if (isalpha(buf[0])) { 996
968 int err; 997 kfree(toclose);
969 char transport[16]; 998 return len;
970 int port; 999}
971 if (sscanf(buf, "%15s %4d", transport, &port) == 2) { 1000
972 if (port < 1 || port > 65535) 1001/*
973 return -EINVAL; 1002 * A transport listener is added by writing it's transport name and
974 err = nfsd_create_serv(); 1003 * a port number.
975 if (!err) { 1004 */
976 err = svc_create_xprt(nfsd_serv, 1005static ssize_t __write_ports_addxprt(char *buf)
977 transport, PF_INET, port, 1006{
978 SVC_SOCK_ANONYMOUS); 1007 char transport[16];
979 if (err == -ENOENT) 1008 int port, err;
980 /* Give a reasonable perror msg for 1009
981 * bad transport string */ 1010 if (sscanf(buf, "%15s %4u", transport, &port) != 2)
982 err = -EPROTONOSUPPORT; 1011 return -EINVAL;
983 } 1012
984 return err < 0 ? err : 0; 1013 if (port < 1 || port > USHORT_MAX)
985 } 1014 return -EINVAL;
986 } 1015
987 /* 1016 err = nfsd_create_serv();
988 * Remove a transport by writing it's transport name and port number 1017 if (err != 0)
989 */ 1018 return err;
990 if (buf[0] == '-' && isalpha(buf[1])) { 1019
991 struct svc_xprt *xprt; 1020 err = svc_create_xprt(nfsd_serv, transport,
992 int err = -EINVAL; 1021 PF_INET, port, SVC_SOCK_ANONYMOUS);
993 char transport[16]; 1022 if (err < 0) {
994 int port; 1023 /* Give a reasonable perror msg for bad transport string */
995 if (sscanf(&buf[1], "%15s %4d", transport, &port) == 2) { 1024 if (err == -ENOENT)
996 if (port < 1 || port > 65535) 1025 err = -EPROTONOSUPPORT;
997 return -EINVAL; 1026 return err;
998 if (nfsd_serv) {
999 xprt = svc_find_xprt(nfsd_serv, transport,
1000 AF_UNSPEC, port);
1001 if (xprt) {
1002 svc_close_xprt(xprt);
1003 svc_xprt_put(xprt);
1004 err = 0;
1005 } else
1006 err = -ENOTCONN;
1007 }
1008 return err < 0 ? err : 0;
1009 }
1010 } 1027 }
1028 return 0;
1029}
1030
1031/*
1032 * A transport listener is removed by writing a "-", it's transport
1033 * name, and it's port number.
1034 */
1035static ssize_t __write_ports_delxprt(char *buf)
1036{
1037 struct svc_xprt *xprt;
1038 char transport[16];
1039 int port;
1040
1041 if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2)
1042 return -EINVAL;
1043
1044 if (port < 1 || port > USHORT_MAX || nfsd_serv == NULL)
1045 return -EINVAL;
1046
1047 xprt = svc_find_xprt(nfsd_serv, transport, AF_UNSPEC, port);
1048 if (xprt == NULL)
1049 return -ENOTCONN;
1050
1051 svc_close_xprt(xprt);
1052 svc_xprt_put(xprt);
1053 return 0;
1054}
1055
1056static ssize_t __write_ports(struct file *file, char *buf, size_t size)
1057{
1058 if (size == 0)
1059 return __write_ports_names(buf);
1060
1061 if (isdigit(buf[0]))
1062 return __write_ports_addfd(buf);
1063
1064 if (buf[0] == '-' && isdigit(buf[1]))
1065 return __write_ports_delfd(buf);
1066
1067 if (isalpha(buf[0]))
1068 return __write_ports_addxprt(buf);
1069
1070 if (buf[0] == '-' && isalpha(buf[1]))
1071 return __write_ports_delxprt(buf);
1072
1011 return -EINVAL; 1073 return -EINVAL;
1012} 1074}
1013 1075
@@ -1030,7 +1092,9 @@ static ssize_t __write_ports(struct file *file, char *buf, size_t size)
1030 * buf: C string containing an unsigned 1092 * buf: C string containing an unsigned
1031 * integer value representing a bound 1093 * integer value representing a bound
1032 * but unconnected socket that is to be 1094 * but unconnected socket that is to be
1033 * used as an NFSD listener 1095 * used as an NFSD listener; listen(3)
1096 * must be called for a SOCK_STREAM
1097 * socket, otherwise it is ignored
1034 * size: non-zero length of C string in @buf 1098 * size: non-zero length of C string in @buf
1035 * Output: 1099 * Output:
1036 * On success: NFS service is started; 1100 * On success: NFS service is started;
@@ -1138,7 +1202,9 @@ static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
1138 nfsd_max_blksize = bsize; 1202 nfsd_max_blksize = bsize;
1139 mutex_unlock(&nfsd_mutex); 1203 mutex_unlock(&nfsd_mutex);
1140 } 1204 }
1141 return sprintf(buf, "%d\n", nfsd_max_blksize); 1205
1206 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
1207 nfsd_max_blksize);
1142} 1208}
1143 1209
1144#ifdef CONFIG_NFSD_V4 1210#ifdef CONFIG_NFSD_V4
@@ -1162,8 +1228,9 @@ static ssize_t __write_leasetime(struct file *file, char *buf, size_t size)
1162 return -EINVAL; 1228 return -EINVAL;
1163 nfs4_reset_lease(lease); 1229 nfs4_reset_lease(lease);
1164 } 1230 }
1165 sprintf(buf, "%ld\n", nfs4_lease_time()); 1231
1166 return strlen(buf); 1232 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n",
1233 nfs4_lease_time());
1167} 1234}
1168 1235
1169/** 1236/**
@@ -1219,8 +1286,9 @@ static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
1219 1286
1220 status = nfs4_reset_recoverydir(recdir); 1287 status = nfs4_reset_recoverydir(recdir);
1221 } 1288 }
1222 sprintf(buf, "%s\n", nfs4_recoverydir()); 1289
1223 return strlen(buf); 1290 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
1291 nfs4_recoverydir());
1224} 1292}
1225 1293
1226/** 1294/**
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 9f1ca17293d3..8847f3fbfc1e 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -27,9 +27,6 @@
27#define NFSDDBG_FACILITY NFSDDBG_FH 27#define NFSDDBG_FACILITY NFSDDBG_FH
28 28
29 29
30static int nfsd_nr_verified;
31static int nfsd_nr_put;
32
33/* 30/*
34 * our acceptability function. 31 * our acceptability function.
35 * if NOSUBTREECHECK, accept anything 32 * if NOSUBTREECHECK, accept anything
@@ -251,7 +248,6 @@ static __be32 nfsd_set_fh_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp)
251 248
252 fhp->fh_dentry = dentry; 249 fhp->fh_dentry = dentry;
253 fhp->fh_export = exp; 250 fhp->fh_export = exp;
254 nfsd_nr_verified++;
255 return 0; 251 return 0;
256out: 252out:
257 exp_put(exp); 253 exp_put(exp);
@@ -552,7 +548,6 @@ fh_compose(struct svc_fh *fhp, struct svc_export *exp, struct dentry *dentry,
552 return nfserr_opnotsupp; 548 return nfserr_opnotsupp;
553 } 549 }
554 550
555 nfsd_nr_verified++;
556 return 0; 551 return 0;
557} 552}
558 553
@@ -609,7 +604,6 @@ fh_put(struct svc_fh *fhp)
609 fhp->fh_pre_saved = 0; 604 fhp->fh_pre_saved = 0;
610 fhp->fh_post_saved = 0; 605 fhp->fh_post_saved = 0;
611#endif 606#endif
612 nfsd_nr_put++;
613 } 607 }
614 if (exp) { 608 if (exp) {
615 cache_put(&exp->h, &svc_export_cache); 609 cache_put(&exp->h, &svc_export_cache);
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index e298e260b5f1..0eb9c820b7a6 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -533,45 +533,179 @@ nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
533 * NFSv2 Server procedures. 533 * NFSv2 Server procedures.
534 * Only the results of non-idempotent operations are cached. 534 * Only the results of non-idempotent operations are cached.
535 */ 535 */
536#define nfsd_proc_none NULL
537#define nfssvc_release_none NULL
538struct nfsd_void { int dummy; }; 536struct nfsd_void { int dummy; };
539 537
540#define PROC(name, argt, rest, relt, cache, respsize) \
541 { (svc_procfunc) nfsd_proc_##name, \
542 (kxdrproc_t) nfssvc_decode_##argt, \
543 (kxdrproc_t) nfssvc_encode_##rest, \
544 (kxdrproc_t) nfssvc_release_##relt, \
545 sizeof(struct nfsd_##argt), \
546 sizeof(struct nfsd_##rest), \
547 0, \
548 cache, \
549 respsize, \
550 }
551
552#define ST 1 /* status */ 538#define ST 1 /* status */
553#define FH 8 /* filehandle */ 539#define FH 8 /* filehandle */
554#define AT 18 /* attributes */ 540#define AT 18 /* attributes */
555 541
556static struct svc_procedure nfsd_procedures2[18] = { 542static struct svc_procedure nfsd_procedures2[18] = {
557 PROC(null, void, void, none, RC_NOCACHE, ST), 543 [NFSPROC_NULL] = {
558 PROC(getattr, fhandle, attrstat, fhandle, RC_NOCACHE, ST+AT), 544 .pc_func = (svc_procfunc) nfsd_proc_null,
559 PROC(setattr, sattrargs, attrstat, fhandle, RC_REPLBUFF, ST+AT), 545 .pc_decode = (kxdrproc_t) nfssvc_decode_void,
560 PROC(none, void, void, none, RC_NOCACHE, ST), 546 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
561 PROC(lookup, diropargs, diropres, fhandle, RC_NOCACHE, ST+FH+AT), 547 .pc_argsize = sizeof(struct nfsd_void),
562 PROC(readlink, readlinkargs, readlinkres, none, RC_NOCACHE, ST+1+NFS_MAXPATHLEN/4), 548 .pc_ressize = sizeof(struct nfsd_void),
563 PROC(read, readargs, readres, fhandle, RC_NOCACHE, ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4), 549 .pc_cachetype = RC_NOCACHE,
564 PROC(none, void, void, none, RC_NOCACHE, ST), 550 .pc_xdrressize = ST,
565 PROC(write, writeargs, attrstat, fhandle, RC_REPLBUFF, ST+AT), 551 },
566 PROC(create, createargs, diropres, fhandle, RC_REPLBUFF, ST+FH+AT), 552 [NFSPROC_GETATTR] = {
567 PROC(remove, diropargs, void, none, RC_REPLSTAT, ST), 553 .pc_func = (svc_procfunc) nfsd_proc_getattr,
568 PROC(rename, renameargs, void, none, RC_REPLSTAT, ST), 554 .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
569 PROC(link, linkargs, void, none, RC_REPLSTAT, ST), 555 .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
570 PROC(symlink, symlinkargs, void, none, RC_REPLSTAT, ST), 556 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
571 PROC(mkdir, createargs, diropres, fhandle, RC_REPLBUFF, ST+FH+AT), 557 .pc_argsize = sizeof(struct nfsd_fhandle),
572 PROC(rmdir, diropargs, void, none, RC_REPLSTAT, ST), 558 .pc_ressize = sizeof(struct nfsd_attrstat),
573 PROC(readdir, readdirargs, readdirres, none, RC_NOCACHE, 0), 559 .pc_cachetype = RC_NOCACHE,
574 PROC(statfs, fhandle, statfsres, none, RC_NOCACHE, ST+5), 560 .pc_xdrressize = ST+AT,
561 },
562 [NFSPROC_SETATTR] = {
563 .pc_func = (svc_procfunc) nfsd_proc_setattr,
564 .pc_decode = (kxdrproc_t) nfssvc_decode_sattrargs,
565 .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
566 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
567 .pc_argsize = sizeof(struct nfsd_sattrargs),
568 .pc_ressize = sizeof(struct nfsd_attrstat),
569 .pc_cachetype = RC_REPLBUFF,
570 .pc_xdrressize = ST+AT,
571 },
572 [NFSPROC_ROOT] = {
573 .pc_decode = (kxdrproc_t) nfssvc_decode_void,
574 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
575 .pc_argsize = sizeof(struct nfsd_void),
576 .pc_ressize = sizeof(struct nfsd_void),
577 .pc_cachetype = RC_NOCACHE,
578 .pc_xdrressize = ST,
579 },
580 [NFSPROC_LOOKUP] = {
581 .pc_func = (svc_procfunc) nfsd_proc_lookup,
582 .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
583 .pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
584 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
585 .pc_argsize = sizeof(struct nfsd_diropargs),
586 .pc_ressize = sizeof(struct nfsd_diropres),
587 .pc_cachetype = RC_NOCACHE,
588 .pc_xdrressize = ST+FH+AT,
589 },
590 [NFSPROC_READLINK] = {
591 .pc_func = (svc_procfunc) nfsd_proc_readlink,
592 .pc_decode = (kxdrproc_t) nfssvc_decode_readlinkargs,
593 .pc_encode = (kxdrproc_t) nfssvc_encode_readlinkres,
594 .pc_argsize = sizeof(struct nfsd_readlinkargs),
595 .pc_ressize = sizeof(struct nfsd_readlinkres),
596 .pc_cachetype = RC_NOCACHE,
597 .pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
598 },
599 [NFSPROC_READ] = {
600 .pc_func = (svc_procfunc) nfsd_proc_read,
601 .pc_decode = (kxdrproc_t) nfssvc_decode_readargs,
602 .pc_encode = (kxdrproc_t) nfssvc_encode_readres,
603 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
604 .pc_argsize = sizeof(struct nfsd_readargs),
605 .pc_ressize = sizeof(struct nfsd_readres),
606 .pc_cachetype = RC_NOCACHE,
607 .pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
608 },
609 [NFSPROC_WRITECACHE] = {
610 .pc_decode = (kxdrproc_t) nfssvc_decode_void,
611 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
612 .pc_argsize = sizeof(struct nfsd_void),
613 .pc_ressize = sizeof(struct nfsd_void),
614 .pc_cachetype = RC_NOCACHE,
615 .pc_xdrressize = ST,
616 },
617 [NFSPROC_WRITE] = {
618 .pc_func = (svc_procfunc) nfsd_proc_write,
619 .pc_decode = (kxdrproc_t) nfssvc_decode_writeargs,
620 .pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
621 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
622 .pc_argsize = sizeof(struct nfsd_writeargs),
623 .pc_ressize = sizeof(struct nfsd_attrstat),
624 .pc_cachetype = RC_REPLBUFF,
625 .pc_xdrressize = ST+AT,
626 },
627 [NFSPROC_CREATE] = {
628 .pc_func = (svc_procfunc) nfsd_proc_create,
629 .pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
630 .pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
631 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
632 .pc_argsize = sizeof(struct nfsd_createargs),
633 .pc_ressize = sizeof(struct nfsd_diropres),
634 .pc_cachetype = RC_REPLBUFF,
635 .pc_xdrressize = ST+FH+AT,
636 },
637 [NFSPROC_REMOVE] = {
638 .pc_func = (svc_procfunc) nfsd_proc_remove,
639 .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
640 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
641 .pc_argsize = sizeof(struct nfsd_diropargs),
642 .pc_ressize = sizeof(struct nfsd_void),
643 .pc_cachetype = RC_REPLSTAT,
644 .pc_xdrressize = ST,
645 },
646 [NFSPROC_RENAME] = {
647 .pc_func = (svc_procfunc) nfsd_proc_rename,
648 .pc_decode = (kxdrproc_t) nfssvc_decode_renameargs,
649 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
650 .pc_argsize = sizeof(struct nfsd_renameargs),
651 .pc_ressize = sizeof(struct nfsd_void),
652 .pc_cachetype = RC_REPLSTAT,
653 .pc_xdrressize = ST,
654 },
655 [NFSPROC_LINK] = {
656 .pc_func = (svc_procfunc) nfsd_proc_link,
657 .pc_decode = (kxdrproc_t) nfssvc_decode_linkargs,
658 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
659 .pc_argsize = sizeof(struct nfsd_linkargs),
660 .pc_ressize = sizeof(struct nfsd_void),
661 .pc_cachetype = RC_REPLSTAT,
662 .pc_xdrressize = ST,
663 },
664 [NFSPROC_SYMLINK] = {
665 .pc_func = (svc_procfunc) nfsd_proc_symlink,
666 .pc_decode = (kxdrproc_t) nfssvc_decode_symlinkargs,
667 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
668 .pc_argsize = sizeof(struct nfsd_symlinkargs),
669 .pc_ressize = sizeof(struct nfsd_void),
670 .pc_cachetype = RC_REPLSTAT,
671 .pc_xdrressize = ST,
672 },
673 [NFSPROC_MKDIR] = {
674 .pc_func = (svc_procfunc) nfsd_proc_mkdir,
675 .pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
676 .pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
677 .pc_release = (kxdrproc_t) nfssvc_release_fhandle,
678 .pc_argsize = sizeof(struct nfsd_createargs),
679 .pc_ressize = sizeof(struct nfsd_diropres),
680 .pc_cachetype = RC_REPLBUFF,
681 .pc_xdrressize = ST+FH+AT,
682 },
683 [NFSPROC_RMDIR] = {
684 .pc_func = (svc_procfunc) nfsd_proc_rmdir,
685 .pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
686 .pc_encode = (kxdrproc_t) nfssvc_encode_void,
687 .pc_argsize = sizeof(struct nfsd_diropargs),
688 .pc_ressize = sizeof(struct nfsd_void),
689 .pc_cachetype = RC_REPLSTAT,
690 .pc_xdrressize = ST,
691 },
692 [NFSPROC_READDIR] = {
693 .pc_func = (svc_procfunc) nfsd_proc_readdir,
694 .pc_decode = (kxdrproc_t) nfssvc_decode_readdirargs,
695 .pc_encode = (kxdrproc_t) nfssvc_encode_readdirres,
696 .pc_argsize = sizeof(struct nfsd_readdirargs),
697 .pc_ressize = sizeof(struct nfsd_readdirres),
698 .pc_cachetype = RC_NOCACHE,
699 },
700 [NFSPROC_STATFS] = {
701 .pc_func = (svc_procfunc) nfsd_proc_statfs,
702 .pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
703 .pc_encode = (kxdrproc_t) nfssvc_encode_statfsres,
704 .pc_argsize = sizeof(struct nfsd_fhandle),
705 .pc_ressize = sizeof(struct nfsd_statfsres),
706 .pc_cachetype = RC_NOCACHE,
707 .pc_xdrressize = ST+5,
708 },
575}; 709};
576 710
577 711
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index cbba4a935786..d4c9884cd54b 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -390,12 +390,14 @@ nfsd_svc(unsigned short port, int nrservs)
390 390
391 mutex_lock(&nfsd_mutex); 391 mutex_lock(&nfsd_mutex);
392 dprintk("nfsd: creating service\n"); 392 dprintk("nfsd: creating service\n");
393 error = -EINVAL;
394 if (nrservs <= 0) 393 if (nrservs <= 0)
395 nrservs = 0; 394 nrservs = 0;
396 if (nrservs > NFSD_MAXSERVS) 395 if (nrservs > NFSD_MAXSERVS)
397 nrservs = NFSD_MAXSERVS; 396 nrservs = NFSD_MAXSERVS;
398 397 error = 0;
398 if (nrservs == 0 && nfsd_serv == NULL)
399 goto out;
400
399 /* Readahead param cache - will no-op if it already exists */ 401 /* Readahead param cache - will no-op if it already exists */
400 error = nfsd_racache_init(2*nrservs); 402 error = nfsd_racache_init(2*nrservs);
401 if (error<0) 403 if (error<0)
@@ -413,6 +415,12 @@ nfsd_svc(unsigned short port, int nrservs)
413 goto failure; 415 goto failure;
414 416
415 error = svc_set_num_threads(nfsd_serv, NULL, nrservs); 417 error = svc_set_num_threads(nfsd_serv, NULL, nrservs);
418 if (error == 0)
419 /* We are holding a reference to nfsd_serv which
420 * we don't want to count in the return value,
421 * so subtract 1
422 */
423 error = nfsd_serv->sv_nrthreads - 1;
416 failure: 424 failure:
417 svc_destroy(nfsd_serv); /* Release server */ 425 svc_destroy(nfsd_serv); /* Release server */
418 out: 426 out:
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 99f835753596..4145083dcf88 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -966,6 +966,43 @@ static void kill_suid(struct dentry *dentry)
966 mutex_unlock(&dentry->d_inode->i_mutex); 966 mutex_unlock(&dentry->d_inode->i_mutex);
967} 967}
968 968
969/*
970 * Gathered writes: If another process is currently writing to the file,
971 * there's a high chance this is another nfsd (triggered by a bulk write
972 * from a client's biod). Rather than syncing the file with each write
973 * request, we sleep for 10 msec.
974 *
975 * I don't know if this roughly approximates C. Juszak's idea of
976 * gathered writes, but it's a nice and simple solution (IMHO), and it
977 * seems to work:-)
978 *
979 * Note: we do this only in the NFSv2 case, since v3 and higher have a
980 * better tool (separate unstable writes and commits) for solving this
981 * problem.
982 */
983static int wait_for_concurrent_writes(struct file *file)
984{
985 struct inode *inode = file->f_path.dentry->d_inode;
986 static ino_t last_ino;
987 static dev_t last_dev;
988 int err = 0;
989
990 if (atomic_read(&inode->i_writecount) > 1
991 || (last_ino == inode->i_ino && last_dev == inode->i_sb->s_dev)) {
992 dprintk("nfsd: write defer %d\n", task_pid_nr(current));
993 msleep(10);
994 dprintk("nfsd: write resume %d\n", task_pid_nr(current));
995 }
996
997 if (inode->i_state & I_DIRTY) {
998 dprintk("nfsd: write sync %d\n", task_pid_nr(current));
999 err = nfsd_sync(file);
1000 }
1001 last_ino = inode->i_ino;
1002 last_dev = inode->i_sb->s_dev;
1003 return err;
1004}
1005
969static __be32 1006static __be32
970nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, 1007nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
971 loff_t offset, struct kvec *vec, int vlen, 1008 loff_t offset, struct kvec *vec, int vlen,
@@ -978,6 +1015,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
978 __be32 err = 0; 1015 __be32 err = 0;
979 int host_err; 1016 int host_err;
980 int stable = *stablep; 1017 int stable = *stablep;
1018 int use_wgather;
981 1019
982#ifdef MSNFS 1020#ifdef MSNFS
983 err = nfserr_perm; 1021 err = nfserr_perm;
@@ -996,9 +1034,10 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
996 * - the sync export option has been set, or 1034 * - the sync export option has been set, or
997 * - the client requested O_SYNC behavior (NFSv3 feature). 1035 * - the client requested O_SYNC behavior (NFSv3 feature).
998 * - The file system doesn't support fsync(). 1036 * - The file system doesn't support fsync().
999 * When gathered writes have been configured for this volume, 1037 * When NFSv2 gathered writes have been configured for this volume,
1000 * flushing the data to disk is handled separately below. 1038 * flushing the data to disk is handled separately below.
1001 */ 1039 */
1040 use_wgather = (rqstp->rq_vers == 2) && EX_WGATHER(exp);
1002 1041
1003 if (!file->f_op->fsync) {/* COMMIT3 cannot work */ 1042 if (!file->f_op->fsync) {/* COMMIT3 cannot work */
1004 stable = 2; 1043 stable = 2;
@@ -1007,7 +1046,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
1007 1046
1008 if (!EX_ISSYNC(exp)) 1047 if (!EX_ISSYNC(exp))
1009 stable = 0; 1048 stable = 0;
1010 if (stable && !EX_WGATHER(exp)) { 1049 if (stable && !use_wgather) {
1011 spin_lock(&file->f_lock); 1050 spin_lock(&file->f_lock);
1012 file->f_flags |= O_SYNC; 1051 file->f_flags |= O_SYNC;
1013 spin_unlock(&file->f_lock); 1052 spin_unlock(&file->f_lock);
@@ -1017,52 +1056,20 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
1017 oldfs = get_fs(); set_fs(KERNEL_DS); 1056 oldfs = get_fs(); set_fs(KERNEL_DS);
1018 host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset); 1057 host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset);
1019 set_fs(oldfs); 1058 set_fs(oldfs);
1020 if (host_err >= 0) { 1059 if (host_err < 0)
1021 *cnt = host_err; 1060 goto out_nfserr;
1022 nfsdstats.io_write += host_err; 1061 *cnt = host_err;
1023 fsnotify_modify(file->f_path.dentry); 1062 nfsdstats.io_write += host_err;
1024 } 1063 fsnotify_modify(file->f_path.dentry);
1025 1064
1026 /* clear setuid/setgid flag after write */ 1065 /* clear setuid/setgid flag after write */
1027 if (host_err >= 0 && (inode->i_mode & (S_ISUID | S_ISGID))) 1066 if (inode->i_mode & (S_ISUID | S_ISGID))
1028 kill_suid(dentry); 1067 kill_suid(dentry);
1029 1068
1030 if (host_err >= 0 && stable) { 1069 if (stable && use_wgather)
1031 static ino_t last_ino; 1070 host_err = wait_for_concurrent_writes(file);
1032 static dev_t last_dev;
1033
1034 /*
1035 * Gathered writes: If another process is currently
1036 * writing to the file, there's a high chance
1037 * this is another nfsd (triggered by a bulk write
1038 * from a client's biod). Rather than syncing the
1039 * file with each write request, we sleep for 10 msec.
1040 *
1041 * I don't know if this roughly approximates
1042 * C. Juszak's idea of gathered writes, but it's a
1043 * nice and simple solution (IMHO), and it seems to
1044 * work:-)
1045 */
1046 if (EX_WGATHER(exp)) {
1047 if (atomic_read(&inode->i_writecount) > 1
1048 || (last_ino == inode->i_ino && last_dev == inode->i_sb->s_dev)) {
1049 dprintk("nfsd: write defer %d\n", task_pid_nr(current));
1050 msleep(10);
1051 dprintk("nfsd: write resume %d\n", task_pid_nr(current));
1052 }
1053
1054 if (inode->i_state & I_DIRTY) {
1055 dprintk("nfsd: write sync %d\n", task_pid_nr(current));
1056 host_err=nfsd_sync(file);
1057 }
1058#if 0
1059 wake_up(&inode->i_wait);
1060#endif
1061 }
1062 last_ino = inode->i_ino;
1063 last_dev = inode->i_sb->s_dev;
1064 }
1065 1071
1072out_nfserr:
1066 dprintk("nfsd: write complete host_err=%d\n", host_err); 1073 dprintk("nfsd: write complete host_err=%d\n", host_err);
1067 if (host_err >= 0) 1074 if (host_err >= 0)
1068 err = 0; 1075 err = 0;
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-07 11:17:27 -0500