From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- fs/nfsd/nfs3xdr.c | 1354 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1354 insertions(+) create mode 100644 fs/nfsd/nfs3xdr.c (limited to 'fs/nfsd/nfs3xdr.c') diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c new file mode 100644 index 000000000..3308dd671 --- /dev/null +++ b/fs/nfsd/nfs3xdr.c @@ -0,0 +1,1354 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * XDR support for nfsd/protocol version 3. + * + * Copyright (C) 1995, 1996, 1997 Olaf Kirch + * + * 2003-08-09 Jamie Lokier: Use htonl() for nanoseconds, not htons()! + */ + +#include +#include +#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 = newsize; + } + 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; +} + +/* + * 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; + } + + return xdr_stream_subsegment(xdr, &args->payload, args->count); +} + +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; + + 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; + + /* symlink_data */ + args->first.iov_len = head->iov_len - xdr_stream_pos(xdr); + args->first.iov_base = xdr_inline_decode(xdr, args->tlen); + return args->first.iov_base != NULL; +} + +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, 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); +} -- cgit v1.2.3