| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * XDR support for nfsd/protocol version 3. |
| * |
| * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> |
| * |
| * 2003-08-09 Jamie Lokier: Use htonl() for nanoseconds, not htons()! |
| */ |
| |
| #include <linux/namei.h> |
| #include <linux/sunrpc/svc_xprt.h> |
| #include "xdr3.h" |
| #include "auth.h" |
| #include "netns.h" |
| #include "vfs.h" |
| |
| /* |
| * Force construction of an empty post-op attr |
| */ |
| static const struct svc_fh nfs3svc_null_fh = { |
| .fh_no_wcc = true, |
| }; |
| |
| /* |
| * time_delta. {1, 0} means the server is accurate only |
| * to the nearest second. |
| */ |
| static const struct timespec64 nfs3svc_time_delta = { |
| .tv_sec = 1, |
| .tv_nsec = 0, |
| }; |
| |
| /* |
| * Mapping of S_IF* types to NFS file types |
| */ |
| static const u32 nfs3_ftypes[] = { |
| NF3NON, NF3FIFO, NF3CHR, NF3BAD, |
| NF3DIR, NF3BAD, NF3BLK, NF3BAD, |
| NF3REG, NF3BAD, NF3LNK, NF3BAD, |
| NF3SOCK, NF3BAD, NF3LNK, NF3BAD, |
| }; |
| |
| |
| /* |
| * Basic NFSv3 data types (RFC 1813 Sections 2.5 and 2.6) |
| */ |
| |
| static __be32 * |
| encode_nfstime3(__be32 *p, const struct timespec64 *time) |
| { |
| *p++ = cpu_to_be32((u32)time->tv_sec); |
| *p++ = cpu_to_be32(time->tv_nsec); |
| |
| return p; |
| } |
| |
| static bool |
| svcxdr_decode_nfstime3(struct xdr_stream *xdr, struct timespec64 *timep) |
| { |
| __be32 *p; |
| |
| p = xdr_inline_decode(xdr, XDR_UNIT * 2); |
| if (!p) |
| return false; |
| timep->tv_sec = be32_to_cpup(p++); |
| timep->tv_nsec = be32_to_cpup(p); |
| |
| return true; |
| } |
| |
| /** |
| * svcxdr_decode_nfs_fh3 - Decode an NFSv3 file handle |
| * @xdr: XDR stream positioned at an undecoded NFSv3 FH |
| * @fhp: OUT: filled-in server file handle |
| * |
| * Return values: |
| * %false: The encoded file handle was not valid |
| * %true: @fhp has been initialized |
| */ |
| bool |
| svcxdr_decode_nfs_fh3(struct xdr_stream *xdr, struct svc_fh *fhp) |
| { |
| __be32 *p; |
| u32 size; |
| |
| if (xdr_stream_decode_u32(xdr, &size) < 0) |
| return false; |
| if (size == 0 || size > NFS3_FHSIZE) |
| return false; |
| p = xdr_inline_decode(xdr, size); |
| if (!p) |
| return false; |
| fh_init(fhp, NFS3_FHSIZE); |
| fhp->fh_handle.fh_size = size; |
| memcpy(&fhp->fh_handle.fh_raw, p, size); |
| |
| return true; |
| } |
| |
| /** |
| * svcxdr_encode_nfsstat3 - Encode an NFSv3 status code |
| * @xdr: XDR stream |
| * @status: status value to encode |
| * |
| * Return values: |
| * %false: Send buffer space was exhausted |
| * %true: Success |
| */ |
| bool |
| svcxdr_encode_nfsstat3(struct xdr_stream *xdr, __be32 status) |
| { |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, sizeof(status)); |
| if (!p) |
| return false; |
| *p = status; |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_encode_nfs_fh3(struct xdr_stream *xdr, const struct svc_fh *fhp) |
| { |
| u32 size = fhp->fh_handle.fh_size; |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, XDR_UNIT + size); |
| if (!p) |
| return false; |
| *p++ = cpu_to_be32(size); |
| if (size) |
| p[XDR_QUADLEN(size) - 1] = 0; |
| memcpy(p, &fhp->fh_handle.fh_raw, size); |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_encode_post_op_fh3(struct xdr_stream *xdr, const struct svc_fh *fhp) |
| { |
| if (xdr_stream_encode_item_present(xdr) < 0) |
| return false; |
| if (!svcxdr_encode_nfs_fh3(xdr, fhp)) |
| return false; |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_encode_cookieverf3(struct xdr_stream *xdr, const __be32 *verf) |
| { |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, NFS3_COOKIEVERFSIZE); |
| if (!p) |
| return false; |
| memcpy(p, verf, NFS3_COOKIEVERFSIZE); |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_encode_writeverf3(struct xdr_stream *xdr, const __be32 *verf) |
| { |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, NFS3_WRITEVERFSIZE); |
| if (!p) |
| return false; |
| memcpy(p, verf, NFS3_WRITEVERFSIZE); |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_decode_filename3(struct xdr_stream *xdr, char **name, unsigned int *len) |
| { |
| u32 size, i; |
| __be32 *p; |
| char *c; |
| |
| if (xdr_stream_decode_u32(xdr, &size) < 0) |
| return false; |
| if (size == 0 || size > NFS3_MAXNAMLEN) |
| return false; |
| p = xdr_inline_decode(xdr, size); |
| if (!p) |
| return false; |
| |
| *len = size; |
| *name = (char *)p; |
| for (i = 0, c = *name; i < size; i++, c++) { |
| if (*c == '\0' || *c == '/') |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_decode_diropargs3(struct xdr_stream *xdr, struct svc_fh *fhp, |
| char **name, unsigned int *len) |
| { |
| return svcxdr_decode_nfs_fh3(xdr, fhp) && |
| svcxdr_decode_filename3(xdr, name, len); |
| } |
| |
| static bool |
| svcxdr_decode_sattr3(struct svc_rqst *rqstp, struct xdr_stream *xdr, |
| struct iattr *iap) |
| { |
| u32 set_it; |
| |
| iap->ia_valid = 0; |
| |
| if (xdr_stream_decode_bool(xdr, &set_it) < 0) |
| return false; |
| if (set_it) { |
| u32 mode; |
| |
| if (xdr_stream_decode_u32(xdr, &mode) < 0) |
| return false; |
| iap->ia_valid |= ATTR_MODE; |
| iap->ia_mode = mode; |
| } |
| if (xdr_stream_decode_bool(xdr, &set_it) < 0) |
| return false; |
| if (set_it) { |
| u32 uid; |
| |
| if (xdr_stream_decode_u32(xdr, &uid) < 0) |
| return false; |
| iap->ia_uid = make_kuid(nfsd_user_namespace(rqstp), uid); |
| if (uid_valid(iap->ia_uid)) |
| iap->ia_valid |= ATTR_UID; |
| } |
| if (xdr_stream_decode_bool(xdr, &set_it) < 0) |
| return false; |
| if (set_it) { |
| u32 gid; |
| |
| if (xdr_stream_decode_u32(xdr, &gid) < 0) |
| return false; |
| iap->ia_gid = make_kgid(nfsd_user_namespace(rqstp), gid); |
| if (gid_valid(iap->ia_gid)) |
| iap->ia_valid |= ATTR_GID; |
| } |
| if (xdr_stream_decode_bool(xdr, &set_it) < 0) |
| return false; |
| if (set_it) { |
| u64 newsize; |
| |
| if (xdr_stream_decode_u64(xdr, &newsize) < 0) |
| return false; |
| iap->ia_valid |= ATTR_SIZE; |
| iap->ia_size = min_t(u64, newsize, NFS_OFFSET_MAX); |
| } |
| if (xdr_stream_decode_u32(xdr, &set_it) < 0) |
| return false; |
| switch (set_it) { |
| case DONT_CHANGE: |
| break; |
| case SET_TO_SERVER_TIME: |
| iap->ia_valid |= ATTR_ATIME; |
| break; |
| case SET_TO_CLIENT_TIME: |
| if (!svcxdr_decode_nfstime3(xdr, &iap->ia_atime)) |
| return false; |
| iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; |
| break; |
| default: |
| return false; |
| } |
| if (xdr_stream_decode_u32(xdr, &set_it) < 0) |
| return false; |
| switch (set_it) { |
| case DONT_CHANGE: |
| break; |
| case SET_TO_SERVER_TIME: |
| iap->ia_valid |= ATTR_MTIME; |
| break; |
| case SET_TO_CLIENT_TIME: |
| if (!svcxdr_decode_nfstime3(xdr, &iap->ia_mtime)) |
| return false; |
| iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; |
| break; |
| default: |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_decode_sattrguard3(struct xdr_stream *xdr, struct nfsd3_sattrargs *args) |
| { |
| __be32 *p; |
| u32 check; |
| |
| if (xdr_stream_decode_bool(xdr, &check) < 0) |
| return false; |
| if (check) { |
| p = xdr_inline_decode(xdr, XDR_UNIT * 2); |
| if (!p) |
| return false; |
| args->check_guard = 1; |
| args->guardtime = be32_to_cpup(p); |
| } else |
| args->check_guard = 0; |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_decode_specdata3(struct xdr_stream *xdr, struct nfsd3_mknodargs *args) |
| { |
| __be32 *p; |
| |
| p = xdr_inline_decode(xdr, XDR_UNIT * 2); |
| if (!p) |
| return false; |
| args->major = be32_to_cpup(p++); |
| args->minor = be32_to_cpup(p); |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_decode_devicedata3(struct svc_rqst *rqstp, struct xdr_stream *xdr, |
| struct nfsd3_mknodargs *args) |
| { |
| return svcxdr_decode_sattr3(rqstp, xdr, &args->attrs) && |
| svcxdr_decode_specdata3(xdr, args); |
| } |
| |
| static bool |
| svcxdr_encode_fattr3(struct svc_rqst *rqstp, struct xdr_stream *xdr, |
| const struct svc_fh *fhp, const struct kstat *stat) |
| { |
| struct user_namespace *userns = nfsd_user_namespace(rqstp); |
| __be32 *p; |
| u64 fsid; |
| |
| p = xdr_reserve_space(xdr, XDR_UNIT * 21); |
| if (!p) |
| return false; |
| |
| *p++ = cpu_to_be32(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]); |
| *p++ = cpu_to_be32((u32)(stat->mode & S_IALLUGO)); |
| *p++ = cpu_to_be32((u32)stat->nlink); |
| *p++ = cpu_to_be32((u32)from_kuid_munged(userns, stat->uid)); |
| *p++ = cpu_to_be32((u32)from_kgid_munged(userns, stat->gid)); |
| if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) |
| p = xdr_encode_hyper(p, (u64)NFS3_MAXPATHLEN); |
| else |
| p = xdr_encode_hyper(p, (u64)stat->size); |
| |
| /* used */ |
| p = xdr_encode_hyper(p, ((u64)stat->blocks) << 9); |
| |
| /* rdev */ |
| *p++ = cpu_to_be32((u32)MAJOR(stat->rdev)); |
| *p++ = cpu_to_be32((u32)MINOR(stat->rdev)); |
| |
| switch(fsid_source(fhp)) { |
| case FSIDSOURCE_FSID: |
| fsid = (u64)fhp->fh_export->ex_fsid; |
| break; |
| case FSIDSOURCE_UUID: |
| fsid = ((u64 *)fhp->fh_export->ex_uuid)[0]; |
| fsid ^= ((u64 *)fhp->fh_export->ex_uuid)[1]; |
| break; |
| default: |
| fsid = (u64)huge_encode_dev(fhp->fh_dentry->d_sb->s_dev); |
| } |
| p = xdr_encode_hyper(p, fsid); |
| |
| /* fileid */ |
| p = xdr_encode_hyper(p, stat->ino); |
| |
| p = encode_nfstime3(p, &stat->atime); |
| p = encode_nfstime3(p, &stat->mtime); |
| encode_nfstime3(p, &stat->ctime); |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_encode_wcc_attr(struct xdr_stream *xdr, const struct svc_fh *fhp) |
| { |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, XDR_UNIT * 6); |
| if (!p) |
| return false; |
| p = xdr_encode_hyper(p, (u64)fhp->fh_pre_size); |
| p = encode_nfstime3(p, &fhp->fh_pre_mtime); |
| encode_nfstime3(p, &fhp->fh_pre_ctime); |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_encode_pre_op_attr(struct xdr_stream *xdr, const struct svc_fh *fhp) |
| { |
| if (!fhp->fh_pre_saved) { |
| if (xdr_stream_encode_item_absent(xdr) < 0) |
| return false; |
| return true; |
| } |
| |
| if (xdr_stream_encode_item_present(xdr) < 0) |
| return false; |
| return svcxdr_encode_wcc_attr(xdr, fhp); |
| } |
| |
| /** |
| * svcxdr_encode_post_op_attr - Encode NFSv3 post-op attributes |
| * @rqstp: Context of a completed RPC transaction |
| * @xdr: XDR stream |
| * @fhp: File handle to encode |
| * |
| * Return values: |
| * %false: Send buffer space was exhausted |
| * %true: Success |
| */ |
| bool |
| svcxdr_encode_post_op_attr(struct svc_rqst *rqstp, struct xdr_stream *xdr, |
| const struct svc_fh *fhp) |
| { |
| struct dentry *dentry = fhp->fh_dentry; |
| struct kstat stat; |
| |
| /* |
| * The inode may be NULL if the call failed because of a |
| * stale file handle. In this case, no attributes are |
| * returned. |
| */ |
| if (fhp->fh_no_wcc || !dentry || !d_really_is_positive(dentry)) |
| goto no_post_op_attrs; |
| if (fh_getattr(fhp, &stat) != nfs_ok) |
| goto no_post_op_attrs; |
| |
| if (xdr_stream_encode_item_present(xdr) < 0) |
| return false; |
| lease_get_mtime(d_inode(dentry), &stat.mtime); |
| if (!svcxdr_encode_fattr3(rqstp, xdr, fhp, &stat)) |
| return false; |
| |
| return true; |
| |
| no_post_op_attrs: |
| return xdr_stream_encode_item_absent(xdr) > 0; |
| } |
| |
| /* |
| * Encode weak cache consistency data |
| */ |
| static bool |
| svcxdr_encode_wcc_data(struct svc_rqst *rqstp, struct xdr_stream *xdr, |
| const struct svc_fh *fhp) |
| { |
| struct dentry *dentry = fhp->fh_dentry; |
| |
| if (!dentry || !d_really_is_positive(dentry) || !fhp->fh_post_saved) |
| goto neither; |
| |
| /* before */ |
| if (!svcxdr_encode_pre_op_attr(xdr, fhp)) |
| return false; |
| |
| /* after */ |
| if (xdr_stream_encode_item_present(xdr) < 0) |
| return false; |
| if (!svcxdr_encode_fattr3(rqstp, xdr, fhp, &fhp->fh_post_attr)) |
| return false; |
| |
| return true; |
| |
| neither: |
| if (xdr_stream_encode_item_absent(xdr) < 0) |
| return false; |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, fhp)) |
| return false; |
| |
| return true; |
| } |
| |
| static bool fs_supports_change_attribute(struct super_block *sb) |
| { |
| return sb->s_flags & SB_I_VERSION || sb->s_export_op->fetch_iversion; |
| } |
| |
| /* |
| * Fill in the pre_op attr for the wcc data |
| */ |
| void fill_pre_wcc(struct svc_fh *fhp) |
| { |
| struct inode *inode; |
| struct kstat stat; |
| bool v4 = (fhp->fh_maxsize == NFS4_FHSIZE); |
| |
| if (fhp->fh_no_wcc || fhp->fh_pre_saved) |
| return; |
| inode = d_inode(fhp->fh_dentry); |
| if (fs_supports_change_attribute(inode->i_sb) || !v4) { |
| __be32 err = fh_getattr(fhp, &stat); |
| |
| if (err) { |
| /* Grab the times from inode anyway */ |
| stat.mtime = inode->i_mtime; |
| stat.ctime = inode->i_ctime; |
| stat.size = inode->i_size; |
| } |
| fhp->fh_pre_mtime = stat.mtime; |
| fhp->fh_pre_ctime = stat.ctime; |
| fhp->fh_pre_size = stat.size; |
| } |
| if (v4) |
| fhp->fh_pre_change = nfsd4_change_attribute(&stat, inode); |
| |
| fhp->fh_pre_saved = true; |
| } |
| |
| /* |
| * Fill in the post_op attr for the wcc data |
| */ |
| void fill_post_wcc(struct svc_fh *fhp) |
| { |
| bool v4 = (fhp->fh_maxsize == NFS4_FHSIZE); |
| struct inode *inode = d_inode(fhp->fh_dentry); |
| |
| if (fhp->fh_no_wcc) |
| return; |
| |
| if (fhp->fh_post_saved) |
| printk("nfsd: inode locked twice during operation.\n"); |
| |
| fhp->fh_post_saved = true; |
| |
| if (fs_supports_change_attribute(inode->i_sb) || !v4) { |
| __be32 err = fh_getattr(fhp, &fhp->fh_post_attr); |
| |
| if (err) { |
| fhp->fh_post_saved = false; |
| fhp->fh_post_attr.ctime = inode->i_ctime; |
| } |
| } |
| if (v4) |
| fhp->fh_post_change = |
| nfsd4_change_attribute(&fhp->fh_post_attr, inode); |
| } |
| |
| /* |
| * XDR decode functions |
| */ |
| |
| bool |
| nfs3svc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd_fhandle *args = rqstp->rq_argp; |
| |
| return svcxdr_decode_nfs_fh3(xdr, &args->fh); |
| } |
| |
| bool |
| nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_sattrargs *args = rqstp->rq_argp; |
| |
| return svcxdr_decode_nfs_fh3(xdr, &args->fh) && |
| svcxdr_decode_sattr3(rqstp, xdr, &args->attrs) && |
| svcxdr_decode_sattrguard3(xdr, args); |
| } |
| |
| bool |
| nfs3svc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_diropargs *args = rqstp->rq_argp; |
| |
| return svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len); |
| } |
| |
| bool |
| nfs3svc_decode_accessargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_accessargs *args = rqstp->rq_argp; |
| |
| if (!svcxdr_decode_nfs_fh3(xdr, &args->fh)) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->access) < 0) |
| return false; |
| |
| return true; |
| } |
| |
| bool |
| nfs3svc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_readargs *args = rqstp->rq_argp; |
| |
| if (!svcxdr_decode_nfs_fh3(xdr, &args->fh)) |
| return false; |
| if (xdr_stream_decode_u64(xdr, &args->offset) < 0) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->count) < 0) |
| return false; |
| |
| return true; |
| } |
| |
| bool |
| nfs3svc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_writeargs *args = rqstp->rq_argp; |
| u32 max_blocksize = svc_max_payload(rqstp); |
| |
| if (!svcxdr_decode_nfs_fh3(xdr, &args->fh)) |
| return false; |
| if (xdr_stream_decode_u64(xdr, &args->offset) < 0) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->count) < 0) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->stable) < 0) |
| return false; |
| |
| /* opaque data */ |
| if (xdr_stream_decode_u32(xdr, &args->len) < 0) |
| return false; |
| |
| /* request sanity */ |
| if (args->count != args->len) |
| return false; |
| if (args->count > max_blocksize) { |
| args->count = max_blocksize; |
| args->len = max_blocksize; |
| } |
| if (!xdr_stream_subsegment(xdr, &args->payload, args->count)) |
| return false; |
| |
| return true; |
| } |
| |
| bool |
| nfs3svc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_createargs *args = rqstp->rq_argp; |
| |
| if (!svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len)) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->createmode) < 0) |
| return false; |
| switch (args->createmode) { |
| case NFS3_CREATE_UNCHECKED: |
| case NFS3_CREATE_GUARDED: |
| return svcxdr_decode_sattr3(rqstp, xdr, &args->attrs); |
| case NFS3_CREATE_EXCLUSIVE: |
| args->verf = xdr_inline_decode(xdr, NFS3_CREATEVERFSIZE); |
| if (!args->verf) |
| return false; |
| break; |
| default: |
| return false; |
| } |
| return true; |
| } |
| |
| bool |
| nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_createargs *args = rqstp->rq_argp; |
| |
| return svcxdr_decode_diropargs3(xdr, &args->fh, |
| &args->name, &args->len) && |
| svcxdr_decode_sattr3(rqstp, xdr, &args->attrs); |
| } |
| |
| bool |
| nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_symlinkargs *args = rqstp->rq_argp; |
| struct kvec *head = rqstp->rq_arg.head; |
| struct kvec *tail = rqstp->rq_arg.tail; |
| size_t remaining; |
| |
| if (!svcxdr_decode_diropargs3(xdr, &args->ffh, &args->fname, &args->flen)) |
| return false; |
| if (!svcxdr_decode_sattr3(rqstp, xdr, &args->attrs)) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->tlen) < 0) |
| return false; |
| |
| /* request sanity */ |
| remaining = head->iov_len + rqstp->rq_arg.page_len + tail->iov_len; |
| remaining -= xdr_stream_pos(xdr); |
| if (remaining < xdr_align_size(args->tlen)) |
| return false; |
| |
| args->first.iov_base = xdr->p; |
| args->first.iov_len = head->iov_len - xdr_stream_pos(xdr); |
| |
| return true; |
| } |
| |
| bool |
| nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_mknodargs *args = rqstp->rq_argp; |
| |
| if (!svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len)) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->ftype) < 0) |
| return false; |
| switch (args->ftype) { |
| case NF3CHR: |
| case NF3BLK: |
| return svcxdr_decode_devicedata3(rqstp, xdr, args); |
| case NF3SOCK: |
| case NF3FIFO: |
| return svcxdr_decode_sattr3(rqstp, xdr, &args->attrs); |
| case NF3REG: |
| case NF3DIR: |
| case NF3LNK: |
| /* Valid XDR but illegal file types */ |
| break; |
| default: |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool |
| nfs3svc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_renameargs *args = rqstp->rq_argp; |
| |
| return svcxdr_decode_diropargs3(xdr, &args->ffh, |
| &args->fname, &args->flen) && |
| svcxdr_decode_diropargs3(xdr, &args->tfh, |
| &args->tname, &args->tlen); |
| } |
| |
| bool |
| nfs3svc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_linkargs *args = rqstp->rq_argp; |
| |
| return svcxdr_decode_nfs_fh3(xdr, &args->ffh) && |
| svcxdr_decode_diropargs3(xdr, &args->tfh, |
| &args->tname, &args->tlen); |
| } |
| |
| bool |
| nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_readdirargs *args = rqstp->rq_argp; |
| |
| if (!svcxdr_decode_nfs_fh3(xdr, &args->fh)) |
| return false; |
| if (xdr_stream_decode_u64(xdr, &args->cookie) < 0) |
| return false; |
| args->verf = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE); |
| if (!args->verf) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->count) < 0) |
| return false; |
| |
| return true; |
| } |
| |
| bool |
| nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_readdirargs *args = rqstp->rq_argp; |
| u32 dircount; |
| |
| if (!svcxdr_decode_nfs_fh3(xdr, &args->fh)) |
| return false; |
| if (xdr_stream_decode_u64(xdr, &args->cookie) < 0) |
| return false; |
| args->verf = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE); |
| if (!args->verf) |
| return false; |
| /* dircount is ignored */ |
| if (xdr_stream_decode_u32(xdr, &dircount) < 0) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->count) < 0) |
| return false; |
| |
| return true; |
| } |
| |
| bool |
| nfs3svc_decode_commitargs(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_commitargs *args = rqstp->rq_argp; |
| |
| if (!svcxdr_decode_nfs_fh3(xdr, &args->fh)) |
| return false; |
| if (xdr_stream_decode_u64(xdr, &args->offset) < 0) |
| return false; |
| if (xdr_stream_decode_u32(xdr, &args->count) < 0) |
| return false; |
| |
| return true; |
| } |
| |
| /* |
| * XDR encode functions |
| */ |
| |
| /* GETATTR */ |
| bool |
| nfs3svc_encode_getattrres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_attrstat *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| lease_get_mtime(d_inode(resp->fh.fh_dentry), &resp->stat.mtime); |
| if (!svcxdr_encode_fattr3(rqstp, xdr, &resp->fh, &resp->stat)) |
| return false; |
| break; |
| } |
| |
| return true; |
| } |
| |
| /* SETATTR, REMOVE, RMDIR */ |
| bool |
| nfs3svc_encode_wccstat(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_attrstat *resp = rqstp->rq_resp; |
| |
| return svcxdr_encode_nfsstat3(xdr, resp->status) && |
| svcxdr_encode_wcc_data(rqstp, xdr, &resp->fh); |
| } |
| |
| /* LOOKUP */ |
| bool |
| nfs3svc_encode_lookupres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_diropres *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_nfs_fh3(xdr, &resp->fh)) |
| return false; |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->dirfh)) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->dirfh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* ACCESS */ |
| bool |
| nfs3svc_encode_accessres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_accessres *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| if (xdr_stream_encode_u32(xdr, resp->access) < 0) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* READLINK */ |
| bool |
| nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_readlinkres *resp = rqstp->rq_resp; |
| struct kvec *head = rqstp->rq_res.head; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| if (xdr_stream_encode_u32(xdr, resp->len) < 0) |
| return false; |
| xdr_write_pages(xdr, resp->pages, 0, resp->len); |
| if (svc_encode_result_payload(rqstp, head->iov_len, resp->len) < 0) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* READ */ |
| bool |
| nfs3svc_encode_readres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_readres *resp = rqstp->rq_resp; |
| struct kvec *head = rqstp->rq_res.head; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| if (xdr_stream_encode_u32(xdr, resp->count) < 0) |
| return false; |
| if (xdr_stream_encode_bool(xdr, resp->eof) < 0) |
| return false; |
| if (xdr_stream_encode_u32(xdr, resp->count) < 0) |
| return false; |
| xdr_write_pages(xdr, resp->pages, rqstp->rq_res.page_base, |
| resp->count); |
| if (svc_encode_result_payload(rqstp, head->iov_len, resp->count) < 0) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* WRITE */ |
| bool |
| nfs3svc_encode_writeres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_writeres *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_wcc_data(rqstp, xdr, &resp->fh)) |
| return false; |
| if (xdr_stream_encode_u32(xdr, resp->count) < 0) |
| return false; |
| if (xdr_stream_encode_u32(xdr, resp->committed) < 0) |
| return false; |
| if (!svcxdr_encode_writeverf3(xdr, resp->verf)) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_wcc_data(rqstp, xdr, &resp->fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* CREATE, MKDIR, SYMLINK, MKNOD */ |
| bool |
| nfs3svc_encode_createres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_diropres *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_post_op_fh3(xdr, &resp->fh)) |
| return false; |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| if (!svcxdr_encode_wcc_data(rqstp, xdr, &resp->dirfh)) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_wcc_data(rqstp, xdr, &resp->dirfh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* RENAME */ |
| bool |
| nfs3svc_encode_renameres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_renameres *resp = rqstp->rq_resp; |
| |
| return svcxdr_encode_nfsstat3(xdr, resp->status) && |
| svcxdr_encode_wcc_data(rqstp, xdr, &resp->ffh) && |
| svcxdr_encode_wcc_data(rqstp, xdr, &resp->tfh); |
| } |
| |
| /* LINK */ |
| bool |
| nfs3svc_encode_linkres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_linkres *resp = rqstp->rq_resp; |
| |
| return svcxdr_encode_nfsstat3(xdr, resp->status) && |
| svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh) && |
| svcxdr_encode_wcc_data(rqstp, xdr, &resp->tfh); |
| } |
| |
| /* READDIR */ |
| bool |
| nfs3svc_encode_readdirres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_readdirres *resp = rqstp->rq_resp; |
| struct xdr_buf *dirlist = &resp->dirlist; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| if (!svcxdr_encode_cookieverf3(xdr, resp->verf)) |
| return false; |
| xdr_write_pages(xdr, dirlist->pages, 0, dirlist->len); |
| /* no more entries */ |
| if (xdr_stream_encode_item_absent(xdr) < 0) |
| return false; |
| if (xdr_stream_encode_bool(xdr, resp->common.err == nfserr_eof) < 0) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &resp->fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static __be32 |
| compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp, |
| const char *name, int namlen, u64 ino) |
| { |
| struct svc_export *exp; |
| struct dentry *dparent, *dchild; |
| __be32 rv = nfserr_noent; |
| |
| dparent = cd->fh.fh_dentry; |
| exp = cd->fh.fh_export; |
| |
| if (isdotent(name, namlen)) { |
| if (namlen == 2) { |
| dchild = dget_parent(dparent); |
| /* |
| * Don't return filehandle for ".." if we're at |
| * the filesystem or export root: |
| */ |
| if (dchild == dparent) |
| goto out; |
| if (dparent == exp->ex_path.dentry) |
| goto out; |
| } else |
| dchild = dget(dparent); |
| } else |
| dchild = lookup_positive_unlocked(name, dparent, namlen); |
| if (IS_ERR(dchild)) |
| return rv; |
| if (d_mountpoint(dchild)) |
| goto out; |
| if (dchild->d_inode->i_ino != ino) |
| goto out; |
| rv = fh_compose(fhp, exp, dchild, &cd->fh); |
| out: |
| dput(dchild); |
| return rv; |
| } |
| |
| /** |
| * nfs3svc_encode_cookie3 - Encode a directory offset cookie |
| * @resp: readdir result context |
| * @offset: offset cookie to encode |
| * |
| * The buffer space for the offset cookie has already been reserved |
| * by svcxdr_encode_entry3_common(). |
| */ |
| void nfs3svc_encode_cookie3(struct nfsd3_readdirres *resp, u64 offset) |
| { |
| __be64 cookie = cpu_to_be64(offset); |
| |
| if (!resp->cookie_offset) |
| return; |
| write_bytes_to_xdr_buf(&resp->dirlist, resp->cookie_offset, &cookie, |
| sizeof(cookie)); |
| resp->cookie_offset = 0; |
| } |
| |
| static bool |
| svcxdr_encode_entry3_common(struct nfsd3_readdirres *resp, const char *name, |
| int namlen, loff_t offset, u64 ino) |
| { |
| struct xdr_buf *dirlist = &resp->dirlist; |
| struct xdr_stream *xdr = &resp->xdr; |
| |
| if (xdr_stream_encode_item_present(xdr) < 0) |
| return false; |
| /* fileid */ |
| if (xdr_stream_encode_u64(xdr, ino) < 0) |
| return false; |
| /* name */ |
| if (xdr_stream_encode_opaque(xdr, name, min(namlen, NFS3_MAXNAMLEN)) < 0) |
| return false; |
| /* cookie */ |
| resp->cookie_offset = dirlist->len; |
| if (xdr_stream_encode_u64(xdr, NFS_OFFSET_MAX) < 0) |
| return false; |
| |
| return true; |
| } |
| |
| /** |
| * nfs3svc_encode_entry3 - encode one NFSv3 READDIR entry |
| * @data: directory context |
| * @name: name of the object to be encoded |
| * @namlen: length of that name, in bytes |
| * @offset: the offset of the previous entry |
| * @ino: the fileid of this entry |
| * @d_type: unused |
| * |
| * Return values: |
| * %0: Entry was successfully encoded. |
| * %-EINVAL: An encoding problem occured, secondary status code in resp->common.err |
| * |
| * On exit, the following fields are updated: |
| * - resp->xdr |
| * - resp->common.err |
| * - resp->cookie_offset |
| */ |
| int nfs3svc_encode_entry3(void *data, const char *name, int namlen, |
| loff_t offset, u64 ino, unsigned int d_type) |
| { |
| struct readdir_cd *ccd = data; |
| struct nfsd3_readdirres *resp = container_of(ccd, |
| struct nfsd3_readdirres, |
| common); |
| unsigned int starting_length = resp->dirlist.len; |
| |
| /* The offset cookie for the previous entry */ |
| nfs3svc_encode_cookie3(resp, offset); |
| |
| if (!svcxdr_encode_entry3_common(resp, name, namlen, offset, ino)) |
| goto out_toosmall; |
| |
| xdr_commit_encode(&resp->xdr); |
| resp->common.err = nfs_ok; |
| return 0; |
| |
| out_toosmall: |
| resp->cookie_offset = 0; |
| resp->common.err = nfserr_toosmall; |
| resp->dirlist.len = starting_length; |
| return -EINVAL; |
| } |
| |
| static bool |
| svcxdr_encode_entry3_plus(struct nfsd3_readdirres *resp, const char *name, |
| int namlen, u64 ino) |
| { |
| struct xdr_stream *xdr = &resp->xdr; |
| struct svc_fh *fhp = &resp->scratch; |
| bool result; |
| |
| result = false; |
| fh_init(fhp, NFS3_FHSIZE); |
| if (compose_entry_fh(resp, fhp, name, namlen, ino) != nfs_ok) |
| goto out_noattrs; |
| |
| if (!svcxdr_encode_post_op_attr(resp->rqstp, xdr, fhp)) |
| goto out; |
| if (!svcxdr_encode_post_op_fh3(xdr, fhp)) |
| goto out; |
| result = true; |
| |
| out: |
| fh_put(fhp); |
| return result; |
| |
| out_noattrs: |
| if (xdr_stream_encode_item_absent(xdr) < 0) |
| return false; |
| if (xdr_stream_encode_item_absent(xdr) < 0) |
| return false; |
| return true; |
| } |
| |
| /** |
| * nfs3svc_encode_entryplus3 - encode one NFSv3 READDIRPLUS entry |
| * @data: directory context |
| * @name: name of the object to be encoded |
| * @namlen: length of that name, in bytes |
| * @offset: the offset of the previous entry |
| * @ino: the fileid of this entry |
| * @d_type: unused |
| * |
| * Return values: |
| * %0: Entry was successfully encoded. |
| * %-EINVAL: An encoding problem occured, secondary status code in resp->common.err |
| * |
| * On exit, the following fields are updated: |
| * - resp->xdr |
| * - resp->common.err |
| * - resp->cookie_offset |
| */ |
| int nfs3svc_encode_entryplus3(void *data, const char *name, int namlen, |
| loff_t offset, u64 ino, unsigned int d_type) |
| { |
| struct readdir_cd *ccd = data; |
| struct nfsd3_readdirres *resp = container_of(ccd, |
| struct nfsd3_readdirres, |
| common); |
| unsigned int starting_length = resp->dirlist.len; |
| |
| /* The offset cookie for the previous entry */ |
| nfs3svc_encode_cookie3(resp, offset); |
| |
| if (!svcxdr_encode_entry3_common(resp, name, namlen, offset, ino)) |
| goto out_toosmall; |
| if (!svcxdr_encode_entry3_plus(resp, name, namlen, ino)) |
| goto out_toosmall; |
| |
| xdr_commit_encode(&resp->xdr); |
| resp->common.err = nfs_ok; |
| return 0; |
| |
| out_toosmall: |
| resp->cookie_offset = 0; |
| resp->common.err = nfserr_toosmall; |
| resp->dirlist.len = starting_length; |
| return -EINVAL; |
| } |
| |
| static bool |
| svcxdr_encode_fsstat3resok(struct xdr_stream *xdr, |
| const struct nfsd3_fsstatres *resp) |
| { |
| const struct kstatfs *s = &resp->stats; |
| u64 bs = s->f_bsize; |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, XDR_UNIT * 13); |
| if (!p) |
| return false; |
| p = xdr_encode_hyper(p, bs * s->f_blocks); /* total bytes */ |
| p = xdr_encode_hyper(p, bs * s->f_bfree); /* free bytes */ |
| p = xdr_encode_hyper(p, bs * s->f_bavail); /* user available bytes */ |
| p = xdr_encode_hyper(p, s->f_files); /* total inodes */ |
| p = xdr_encode_hyper(p, s->f_ffree); /* free inodes */ |
| p = xdr_encode_hyper(p, s->f_ffree); /* user available inodes */ |
| *p = cpu_to_be32(resp->invarsec); /* mean unchanged time */ |
| |
| return true; |
| } |
| |
| /* FSSTAT */ |
| bool |
| nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_fsstatres *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &nfs3svc_null_fh)) |
| return false; |
| if (!svcxdr_encode_fsstat3resok(xdr, resp)) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &nfs3svc_null_fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_encode_fsinfo3resok(struct xdr_stream *xdr, |
| const struct nfsd3_fsinfores *resp) |
| { |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, XDR_UNIT * 12); |
| if (!p) |
| return false; |
| *p++ = cpu_to_be32(resp->f_rtmax); |
| *p++ = cpu_to_be32(resp->f_rtpref); |
| *p++ = cpu_to_be32(resp->f_rtmult); |
| *p++ = cpu_to_be32(resp->f_wtmax); |
| *p++ = cpu_to_be32(resp->f_wtpref); |
| *p++ = cpu_to_be32(resp->f_wtmult); |
| *p++ = cpu_to_be32(resp->f_dtpref); |
| p = xdr_encode_hyper(p, resp->f_maxfilesize); |
| p = encode_nfstime3(p, &nfs3svc_time_delta); |
| *p = cpu_to_be32(resp->f_properties); |
| |
| return true; |
| } |
| |
| /* FSINFO */ |
| bool |
| nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_fsinfores *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &nfs3svc_null_fh)) |
| return false; |
| if (!svcxdr_encode_fsinfo3resok(xdr, resp)) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &nfs3svc_null_fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool |
| svcxdr_encode_pathconf3resok(struct xdr_stream *xdr, |
| const struct nfsd3_pathconfres *resp) |
| { |
| __be32 *p; |
| |
| p = xdr_reserve_space(xdr, XDR_UNIT * 6); |
| if (!p) |
| return false; |
| *p++ = cpu_to_be32(resp->p_link_max); |
| *p++ = cpu_to_be32(resp->p_name_max); |
| p = xdr_encode_bool(p, resp->p_no_trunc); |
| p = xdr_encode_bool(p, resp->p_chown_restricted); |
| p = xdr_encode_bool(p, resp->p_case_insensitive); |
| xdr_encode_bool(p, resp->p_case_preserving); |
| |
| return true; |
| } |
| |
| /* PATHCONF */ |
| bool |
| nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_pathconfres *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &nfs3svc_null_fh)) |
| return false; |
| if (!svcxdr_encode_pathconf3resok(xdr, resp)) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_post_op_attr(rqstp, xdr, &nfs3svc_null_fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* COMMIT */ |
| bool |
| nfs3svc_encode_commitres(struct svc_rqst *rqstp, struct xdr_stream *xdr) |
| { |
| struct nfsd3_commitres *resp = rqstp->rq_resp; |
| |
| if (!svcxdr_encode_nfsstat3(xdr, resp->status)) |
| return false; |
| switch (resp->status) { |
| case nfs_ok: |
| if (!svcxdr_encode_wcc_data(rqstp, xdr, &resp->fh)) |
| return false; |
| if (!svcxdr_encode_writeverf3(xdr, resp->verf)) |
| return false; |
| break; |
| default: |
| if (!svcxdr_encode_wcc_data(rqstp, xdr, &resp->fh)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* |
| * XDR release functions |
| */ |
| void |
| nfs3svc_release_fhandle(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_attrstat *resp = rqstp->rq_resp; |
| |
| fh_put(&resp->fh); |
| } |
| |
| void |
| nfs3svc_release_fhandle2(struct svc_rqst *rqstp) |
| { |
| struct nfsd3_fhandle_pair *resp = rqstp->rq_resp; |
| |
| fh_put(&resp->fh1); |
| fh_put(&resp->fh2); |
| } |
