^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/fs/lockd/clnt4xdr.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * XDR functions to encode/decode NLM version 4 RPC arguments and results.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * NLM client-side only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2010, Oracle. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/sunrpc/xdr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/sunrpc/clnt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/sunrpc/stats.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/lockd/lockd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <uapi/linux/nfs3.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define NLMDBG_FACILITY NLMDBG_XDR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) # error "NLM host name cannot be larger than XDR_MAX_NETOBJ!"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #if (NLMCLNT_OHSIZE > NLM_MAXSTRLEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) # error "NLM host name cannot be larger than NLM's maximum string length!"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * Declare the space requirements for NLM arguments and replies as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * number of 32bit-words
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define NLM4_void_sz (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define NLM4_cookie_sz (1+(NLM_MAXCOOKIELEN>>2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define NLM4_caller_sz (1+(NLMCLNT_OHSIZE>>2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define NLM4_owner_sz (1+(NLMCLNT_OHSIZE>>2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define NLM4_fhandle_sz (1+(NFS3_FHSIZE>>2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define NLM4_lock_sz (5+NLM4_caller_sz+NLM4_owner_sz+NLM4_fhandle_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define NLM4_holder_sz (6+NLM4_owner_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define NLM4_testargs_sz (NLM4_cookie_sz+1+NLM4_lock_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define NLM4_lockargs_sz (NLM4_cookie_sz+4+NLM4_lock_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define NLM4_cancargs_sz (NLM4_cookie_sz+2+NLM4_lock_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define NLM4_unlockargs_sz (NLM4_cookie_sz+NLM4_lock_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define NLM4_testres_sz (NLM4_cookie_sz+1+NLM4_holder_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define NLM4_res_sz (NLM4_cookie_sz+1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define NLM4_norep_sz (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static s64 loff_t_to_s64(loff_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) s64 res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (offset >= NLM4_OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) res = NLM4_OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) else if (offset <= -NLM4_OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) res = -NLM4_OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) res = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static void nlm4_compute_offsets(const struct nlm_lock *lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u64 *l_offset, u64 *l_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) const struct file_lock *fl = &lock->fl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) *l_offset = loff_t_to_s64(fl->fl_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (fl->fl_end == OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) *l_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) *l_len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * Encode/decode NLMv4 basic data types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * Basic NLMv4 data types are defined in Appendix II, section 6.1.4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * of RFC 1813: "NFS Version 3 Protocol Specification" and in Chapter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * 10 of X/Open's "Protocols for Interworking: XNFS, Version 3W".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * Not all basic data types have their own encoding and decoding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * functions. For run-time efficiency, some data types are encoded
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * or decoded inline.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static void encode_bool(struct xdr_stream *xdr, const int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) p = xdr_reserve_space(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) *p = value ? xdr_one : xdr_zero;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static void encode_int32(struct xdr_stream *xdr, const s32 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) p = xdr_reserve_space(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) *p = cpu_to_be32(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * typedef opaque netobj<MAXNETOBJ_SZ>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static void encode_netobj(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) const u8 *data, const unsigned int length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) p = xdr_reserve_space(xdr, 4 + length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) xdr_encode_opaque(p, data, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static int decode_netobj(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct xdr_netobj *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) ret = xdr_stream_decode_opaque_inline(xdr, (void *)&obj->data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) XDR_MAX_NETOBJ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (unlikely(ret < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) obj->len = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static void encode_cookie(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) const struct nlm_cookie *cookie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) encode_netobj(xdr, (u8 *)&cookie->data, cookie->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) static int decode_cookie(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct nlm_cookie *cookie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) u32 length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) p = xdr_inline_decode(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) length = be32_to_cpup(p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /* apparently HPUX can return empty cookies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) if (length == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) goto out_hpux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (length > NLM_MAXCOOKIELEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) goto out_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) p = xdr_inline_decode(xdr, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) cookie->len = length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) memcpy(cookie->data, p, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) out_hpux:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) cookie->len = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) memset(cookie->data, 0, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) out_size:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) dprintk("NFS: returned cookie was too long: %u\n", length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) out_overflow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * netobj fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) encode_netobj(xdr, (u8 *)&fh->data, fh->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * enum nlm4_stats {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * NLM4_GRANTED = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * NLM4_DENIED = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * NLM4_DENIED_NOLOCKS = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * NLM4_BLOCKED = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * NLM4_DENIED_GRACE_PERIOD = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * NLM4_DEADLCK = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * NLM4_ROFS = 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * NLM4_STALE_FH = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * NLM4_FBIG = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * NLM4_FAILED = 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * struct nlm4_stat {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * nlm4_stats stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * NB: we don't swap bytes for the NLM status values. The upper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * layers deal directly with the status value in network byte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * order.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static void encode_nlm4_stat(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) const __be32 stat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) BUG_ON(be32_to_cpu(stat) > NLM_FAILED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) p = xdr_reserve_space(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) *p = stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static int decode_nlm4_stat(struct xdr_stream *xdr, __be32 *stat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) p = xdr_inline_decode(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (unlikely(ntohl(*p) > ntohl(nlm4_failed)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) goto out_bad_xdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) *stat = *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) out_bad_xdr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) dprintk("%s: server returned invalid nlm4_stats value: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) __func__, be32_to_cpup(p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) out_overflow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * struct nlm4_holder {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * bool exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * int32 svid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * netobj oh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * uint64 l_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * uint64 l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static void encode_nlm4_holder(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) const struct nlm_res *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) const struct nlm_lock *lock = &result->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) u64 l_offset, l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) encode_bool(xdr, lock->fl.fl_type == F_RDLCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) encode_int32(xdr, lock->svid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) encode_netobj(xdr, lock->oh.data, lock->oh.len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) p = xdr_reserve_space(xdr, 4 + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) nlm4_compute_offsets(lock, &l_offset, &l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) p = xdr_encode_hyper(p, l_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) xdr_encode_hyper(p, l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static int decode_nlm4_holder(struct xdr_stream *xdr, struct nlm_res *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) struct nlm_lock *lock = &result->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) struct file_lock *fl = &lock->fl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) u64 l_offset, l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) u32 exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) s32 end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) memset(lock, 0, sizeof(*lock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) locks_init_lock(fl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) p = xdr_inline_decode(xdr, 4 + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) exclusive = be32_to_cpup(p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) lock->svid = be32_to_cpup(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) fl->fl_pid = (pid_t)lock->svid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) error = decode_netobj(xdr, &lock->oh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (unlikely(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) p = xdr_inline_decode(xdr, 8 + 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) fl->fl_flags = FL_POSIX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) fl->fl_type = exclusive != 0 ? F_WRLCK : F_RDLCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) p = xdr_decode_hyper(p, &l_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) xdr_decode_hyper(p, &l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) end = l_offset + l_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) fl->fl_start = (loff_t)l_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (l_len == 0 || end < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) fl->fl_end = OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) fl->fl_end = (loff_t)end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) out_overflow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * string caller_name<LM_MAXSTRLEN>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) static void encode_caller_name(struct xdr_stream *xdr, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) /* NB: client-side does not set lock->len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) u32 length = strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) p = xdr_reserve_space(xdr, 4 + length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) xdr_encode_opaque(p, name, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * struct nlm4_lock {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * string caller_name<LM_MAXSTRLEN>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * netobj fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * netobj oh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * int32 svid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * uint64 l_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * uint64 l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static void encode_nlm4_lock(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) const struct nlm_lock *lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) u64 l_offset, l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) encode_caller_name(xdr, lock->caller);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) encode_fh(xdr, &lock->fh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) encode_netobj(xdr, lock->oh.data, lock->oh.len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) p = xdr_reserve_space(xdr, 4 + 8 + 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) *p++ = cpu_to_be32(lock->svid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) nlm4_compute_offsets(lock, &l_offset, &l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) p = xdr_encode_hyper(p, l_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) xdr_encode_hyper(p, l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * NLMv4 XDR encode functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) * NLMv4 argument types are defined in Appendix II of RFC 1813:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) * "NFS Version 3 Protocol Specification" and Chapter 10 of X/Open's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) * "Protocols for Interworking: XNFS, Version 3W".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * struct nlm4_testargs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * bool exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * struct nlm4_lock alock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) static void nlm4_xdr_enc_testargs(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) const struct nlm_args *args = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) const struct nlm_lock *lock = &args->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) encode_cookie(xdr, &args->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) encode_nlm4_lock(xdr, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) * struct nlm4_lockargs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * bool block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) * bool exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) * struct nlm4_lock alock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) * bool reclaim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * int state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) static void nlm4_xdr_enc_lockargs(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) const struct nlm_args *args = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) const struct nlm_lock *lock = &args->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) encode_cookie(xdr, &args->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) encode_bool(xdr, args->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) encode_nlm4_lock(xdr, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) encode_bool(xdr, args->reclaim);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) encode_int32(xdr, args->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * struct nlm4_cancargs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * bool block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * bool exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * struct nlm4_lock alock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) static void nlm4_xdr_enc_cancargs(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) const struct nlm_args *args = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) const struct nlm_lock *lock = &args->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) encode_cookie(xdr, &args->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) encode_bool(xdr, args->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) encode_nlm4_lock(xdr, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * struct nlm4_unlockargs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) * struct nlm4_lock alock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) static void nlm4_xdr_enc_unlockargs(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) const struct nlm_args *args = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) const struct nlm_lock *lock = &args->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) encode_cookie(xdr, &args->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) encode_nlm4_lock(xdr, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) * struct nlm4_res {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) * nlm4_stat stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) static void nlm4_xdr_enc_res(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) const struct nlm_res *result = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) encode_cookie(xdr, &result->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) encode_nlm4_stat(xdr, result->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) * union nlm4_testrply switch (nlm4_stats stat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) * case NLM4_DENIED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) * struct nlm4_holder holder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) * default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) * void;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * struct nlm4_testres {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) * nlm4_testrply test_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) static void nlm4_xdr_enc_testres(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) const struct nlm_res *result = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) encode_cookie(xdr, &result->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) encode_nlm4_stat(xdr, result->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if (result->status == nlm_lck_denied)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) encode_nlm4_holder(xdr, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * NLMv4 XDR decode functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * NLMv4 argument types are defined in Appendix II of RFC 1813:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * "NFS Version 3 Protocol Specification" and Chapter 10 of X/Open's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) * "Protocols for Interworking: XNFS, Version 3W".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * union nlm4_testrply switch (nlm4_stats stat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) * case NLM4_DENIED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) * struct nlm4_holder holder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) * void;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * struct nlm4_testres {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * nlm4_testrply test_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) static int decode_nlm4_testrply(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) struct nlm_res *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) error = decode_nlm4_stat(xdr, &result->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (unlikely(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (result->status == nlm_lck_denied)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) error = decode_nlm4_holder(xdr, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) static int nlm4_xdr_dec_testres(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) struct nlm_res *result = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) error = decode_cookie(xdr, &result->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) if (unlikely(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) error = decode_nlm4_testrply(xdr, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * struct nlm4_res {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * nlm4_stat stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) static int nlm4_xdr_dec_res(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) struct nlm_res *result = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) error = decode_cookie(xdr, &result->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (unlikely(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) error = decode_nlm4_stat(xdr, &result->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * For NLM, a void procedure really returns nothing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) #define nlm4_xdr_dec_norep NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) #define PROC(proc, argtype, restype) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) [NLMPROC_##proc] = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) .p_proc = NLMPROC_##proc, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) .p_encode = nlm4_xdr_enc_##argtype, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) .p_decode = nlm4_xdr_dec_##restype, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) .p_arglen = NLM4_##argtype##_sz, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) .p_replen = NLM4_##restype##_sz, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) .p_statidx = NLMPROC_##proc, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) .p_name = #proc, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) static const struct rpc_procinfo nlm4_procedures[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) PROC(TEST, testargs, testres),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) PROC(LOCK, lockargs, res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) PROC(CANCEL, cancargs, res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) PROC(UNLOCK, unlockargs, res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) PROC(GRANTED, testargs, res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) PROC(TEST_MSG, testargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) PROC(LOCK_MSG, lockargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) PROC(CANCEL_MSG, cancargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) PROC(UNLOCK_MSG, unlockargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) PROC(GRANTED_MSG, testargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) PROC(TEST_RES, testres, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) PROC(LOCK_RES, res, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) PROC(CANCEL_RES, res, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) PROC(UNLOCK_RES, res, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) PROC(GRANTED_RES, res, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) static unsigned int nlm_version4_counts[ARRAY_SIZE(nlm4_procedures)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) const struct rpc_version nlm_version4 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) .number = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) .nrprocs = ARRAY_SIZE(nlm4_procedures),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) .procs = nlm4_procedures,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) .counts = nlm_version4_counts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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