// SPDX-License-Identifier: GPL-2.0 /* * linux/fs/nfs/callback_xdr.c * * Copyright (C) 2004 Trond Myklebust * * NFSv4 callback encode/decode procedures */ #include <linux/kernel.h> #include <linux/sunrpc/svc.h> #include <linux/nfs4.h> #include <linux/nfs_fs.h> #include <linux/ratelimit.h> #include <linux/printk.h> #include <linux/slab.h> #include <linux/sunrpc/bc_xprt.h> #include "nfs4_fs.h" #include "callback.h" #include "internal.h" #include "nfs4session.h" #include "nfs4trace.h" #define CB_OP_TAGLEN_MAXSZ … #define CB_OP_HDR_RES_MAXSZ … #define CB_OP_GETATTR_BITMAP_MAXSZ … #define CB_OP_GETATTR_RES_MAXSZ … #define CB_OP_RECALL_RES_MAXSZ … #if defined(CONFIG_NFS_V4_1) #define CB_OP_LAYOUTRECALL_RES_MAXSZ … #define CB_OP_DEVICENOTIFY_RES_MAXSZ … #define CB_OP_SEQUENCE_RES_MAXSZ … #define CB_OP_RECALLANY_RES_MAXSZ … #define CB_OP_RECALLSLOT_RES_MAXSZ … #define CB_OP_NOTIFY_LOCK_RES_MAXSZ … #endif /* CONFIG_NFS_V4_1 */ #ifdef CONFIG_NFS_V4_2 #define CB_OP_OFFLOAD_RES_MAXSZ … #endif /* CONFIG_NFS_V4_2 */ #define NFSDBG_FACILITY … /* Internal error code */ #define NFS4ERR_RESOURCE_HDR … struct callback_op { … }; static struct callback_op callback_ops[]; static __be32 nfs4_callback_null(struct svc_rqst *rqstp) { … } /* * svc_process_common() looks for an XDR encoder to know when * not to drop a Reply. */ static bool nfs4_encode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr) { … } static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str, size_t maxlen) { … } static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) { … } static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) { … } static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) { … } static __be32 decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) { … } static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr) { … } static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) { … } static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *argp) { … } static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *argp) { … } #if defined(CONFIG_NFS_V4_1) static __be32 decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) { … } static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *argp) { … } static __be32 decode_devicenotify_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *argp) { … } static __be32 decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid) { … } static __be32 decode_rc_list(struct xdr_stream *xdr, struct referring_call_list *rc_list) { … } static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *argp) { … } static __be32 decode_recallany_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *argp) { … } static __be32 decode_recallslot_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *argp) { … } static __be32 decode_lockowner(struct xdr_stream *xdr, struct cb_notify_lock_args *args) { … } static __be32 decode_notify_lock_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *argp) { … } #endif /* CONFIG_NFS_V4_1 */ #ifdef CONFIG_NFS_V4_2 static __be32 decode_write_response(struct xdr_stream *xdr, struct cb_offloadargs *args) { … } static __be32 decode_offload_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, void *data) { … } #endif /* CONFIG_NFS_V4_2 */ static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) { … } static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, size_t sz) { … } static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) { … } static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) { … } static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec64 *time) { … } static __be32 encode_attr_atime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec64 *time) { … } static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec64 *time) { … } static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec64 *time) { … } static __be32 encode_attr_delegatime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec64 *time) { … } static __be32 encode_attr_delegmtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec64 *time) { … } static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) { … } static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) { … } static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const void *resp) { … } #if defined(CONFIG_NFS_V4_1) static __be32 encode_sessionid(struct xdr_stream *xdr, const struct nfs4_sessionid *sid) { … } static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const void *resp) { … } static __be32 preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) { … } static void nfs4_callback_free_slot(struct nfs4_session *session, struct nfs4_slot *slot) { … } static void nfs4_cb_free_slot(struct cb_process_state *cps) { … } #else /* CONFIG_NFS_V4_1 */ static __be32 preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) { return htonl(NFS4ERR_MINOR_VERS_MISMATCH); } static void nfs4_cb_free_slot(struct cb_process_state *cps) { } #endif /* CONFIG_NFS_V4_1 */ #ifdef CONFIG_NFS_V4_2 static __be32 preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op) { … } #else /* CONFIG_NFS_V4_2 */ static __be32 preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op) { return htonl(NFS4ERR_MINOR_VERS_MISMATCH); } #endif /* CONFIG_NFS_V4_2 */ static __be32 preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) { … } static __be32 process_op(int nop, struct svc_rqst *rqstp, struct cb_process_state *cps) { … } /* * Decode, process and encode a COMPOUND */ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp) { … } static int nfs_callback_dispatch(struct svc_rqst *rqstp) { … } /* * Define NFS4 callback COMPOUND ops. */ static struct callback_op callback_ops[] = …; /* * Define NFS4 callback procedures */ static const struct svc_procedure nfs4_callback_procedures1[] = …; static DEFINE_PER_CPU_ALIGNED(unsigned long, nfs4_callback_count1[ARRAY_SIZE(nfs4_callback_procedures1)]); const struct svc_version nfs4_callback_version1 = …; static DEFINE_PER_CPU_ALIGNED(unsigned long, nfs4_callback_count4[ARRAY_SIZE(nfs4_callback_procedures1)]); const struct svc_version nfs4_callback_version4 = …;
Codebase Browser
linux