^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/clntxdr.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 3 RPC arguments and results.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * NLM version 3 is backwards compatible with NLM versions 1 and 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * NLM client-side only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (C) 2010, Oracle. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/sunrpc/xdr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/sunrpc/clnt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/sunrpc/stats.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/lockd/lockd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <uapi/linux/nfs2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define NLMDBG_FACILITY NLMDBG_XDR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) # error "NLM host name cannot be larger than XDR_MAX_NETOBJ!"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * Declare the space requirements for NLM arguments and replies as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * number of 32bit-words
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define NLM_cookie_sz (1+(NLM_MAXCOOKIELEN>>2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define NLM_caller_sz (1+(NLMCLNT_OHSIZE>>2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define NLM_owner_sz (1+(NLMCLNT_OHSIZE>>2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define NLM_fhandle_sz (1+(NFS2_FHSIZE>>2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define NLM_lock_sz (3+NLM_caller_sz+NLM_owner_sz+NLM_fhandle_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define NLM_holder_sz (4+NLM_owner_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define NLM_testargs_sz (NLM_cookie_sz+1+NLM_lock_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define NLM_lockargs_sz (NLM_cookie_sz+4+NLM_lock_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define NLM_cancargs_sz (NLM_cookie_sz+2+NLM_lock_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define NLM_unlockargs_sz (NLM_cookie_sz+NLM_lock_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define NLM_testres_sz (NLM_cookie_sz+1+NLM_holder_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define NLM_res_sz (NLM_cookie_sz+1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define NLM_norep_sz (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static s32 loff_t_to_s32(loff_t offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) s32 res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (offset >= NLM_OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) res = NLM_OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) else if (offset <= -NLM_OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) res = -NLM_OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) res = offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static void nlm_compute_offsets(const struct nlm_lock *lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u32 *l_offset, u32 *l_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) const struct file_lock *fl = &lock->fl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) *l_offset = loff_t_to_s32(fl->fl_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (fl->fl_end == OFFSET_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) *l_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) *l_len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * Encode/decode NLMv3 basic data types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * Basic NLMv3 data types are not defined in an IETF standards
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * document. X/Open has a description of these data types that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * is useful. See Chapter 10 of "Protocols for Interworking:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * XNFS, Version 3W".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Not all basic data types have their own encoding and decoding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * functions. For run-time efficiency, some data types are encoded
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * or decoded inline.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static void encode_bool(struct xdr_stream *xdr, const int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) p = xdr_reserve_space(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) *p = value ? xdr_one : xdr_zero;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static void encode_int32(struct xdr_stream *xdr, const s32 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) p = xdr_reserve_space(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) *p = cpu_to_be32(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * typedef opaque netobj<MAXNETOBJ_SZ>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static void encode_netobj(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) const u8 *data, const unsigned int length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) p = xdr_reserve_space(xdr, 4 + length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) xdr_encode_opaque(p, data, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static int decode_netobj(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct xdr_netobj *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) ret = xdr_stream_decode_opaque_inline(xdr, (void *)&obj->data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) XDR_MAX_NETOBJ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (unlikely(ret < 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) obj->len = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static void encode_cookie(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) const struct nlm_cookie *cookie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) encode_netobj(xdr, (u8 *)&cookie->data, cookie->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static int decode_cookie(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct nlm_cookie *cookie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) u32 length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) p = xdr_inline_decode(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) length = be32_to_cpup(p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) /* apparently HPUX can return empty cookies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) if (length == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) goto out_hpux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (length > NLM_MAXCOOKIELEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) goto out_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) p = xdr_inline_decode(xdr, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) cookie->len = length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) memcpy(cookie->data, p, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) out_hpux:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) cookie->len = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) memset(cookie->data, 0, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) out_size:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) dprintk("NFS: returned cookie was too long: %u\n", length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) out_overflow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * netobj fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) encode_netobj(xdr, (u8 *)&fh->data, NFS2_FHSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * enum nlm_stats {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * LCK_GRANTED = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * LCK_DENIED = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * LCK_DENIED_NOLOCKS = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * LCK_BLOCKED = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) * LCK_DENIED_GRACE_PERIOD = 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * struct nlm_stat {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * nlm_stats stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * NB: we don't swap bytes for the NLM status values. The upper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * layers deal directly with the status value in network byte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * order.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) static void encode_nlm_stat(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) const __be32 stat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) WARN_ON_ONCE(be32_to_cpu(stat) > NLM_LCK_DENIED_GRACE_PERIOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) p = xdr_reserve_space(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) *p = stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static int decode_nlm_stat(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) __be32 *stat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) p = xdr_inline_decode(xdr, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (unlikely(ntohl(*p) > ntohl(nlm_lck_denied_grace_period)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) goto out_enum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) *stat = *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) out_enum:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) dprintk("%s: server returned invalid nlm_stats value: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) __func__, be32_to_cpup(p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) out_overflow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) * struct nlm_holder {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) * bool exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * int uppid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * netobj oh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * unsigned l_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * unsigned l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) static void encode_nlm_holder(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) const struct nlm_res *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) const struct nlm_lock *lock = &result->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) u32 l_offset, l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) encode_bool(xdr, lock->fl.fl_type == F_RDLCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) encode_int32(xdr, lock->svid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) encode_netobj(xdr, lock->oh.data, lock->oh.len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) p = xdr_reserve_space(xdr, 4 + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) nlm_compute_offsets(lock, &l_offset, &l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) *p++ = cpu_to_be32(l_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) *p = cpu_to_be32(l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static int decode_nlm_holder(struct xdr_stream *xdr, struct nlm_res *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct nlm_lock *lock = &result->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) struct file_lock *fl = &lock->fl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) u32 exclusive, l_offset, l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) s32 end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) memset(lock, 0, sizeof(*lock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) locks_init_lock(fl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) p = xdr_inline_decode(xdr, 4 + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) exclusive = be32_to_cpup(p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) lock->svid = be32_to_cpup(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) fl->fl_pid = (pid_t)lock->svid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) error = decode_netobj(xdr, &lock->oh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (unlikely(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) p = xdr_inline_decode(xdr, 4 + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (unlikely(p == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) goto out_overflow;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) fl->fl_flags = FL_POSIX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) fl->fl_type = exclusive != 0 ? F_WRLCK : F_RDLCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) l_offset = be32_to_cpup(p++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) l_len = be32_to_cpup(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) end = l_offset + l_len - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) fl->fl_start = (loff_t)l_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (l_len == 0 || end < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) fl->fl_end = OFFSET_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) fl->fl_end = (loff_t)end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) out_overflow:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * string caller_name<LM_MAXSTRLEN>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static void encode_caller_name(struct xdr_stream *xdr, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /* NB: client-side does not set lock->len */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) u32 length = strlen(name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) p = xdr_reserve_space(xdr, 4 + length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) xdr_encode_opaque(p, name, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * struct nlm_lock {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * string caller_name<LM_MAXSTRLEN>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * netobj fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) * netobj oh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * int uppid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * unsigned l_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * unsigned l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static void encode_nlm_lock(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) const struct nlm_lock *lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) u32 l_offset, l_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) __be32 *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) encode_caller_name(xdr, lock->caller);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) encode_fh(xdr, &lock->fh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) encode_netobj(xdr, lock->oh.data, lock->oh.len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) p = xdr_reserve_space(xdr, 4 + 4 + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) *p++ = cpu_to_be32(lock->svid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) nlm_compute_offsets(lock, &l_offset, &l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) *p++ = cpu_to_be32(l_offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) *p = cpu_to_be32(l_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * NLMv3 XDR encode functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * NLMv3 argument types are defined in Chapter 10 of The Open Group's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) * "Protocols for Interworking: XNFS, Version 3W".
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) * struct nlm_testargs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) * bool exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) * struct nlm_lock alock;
^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) static void nlm_xdr_enc_testargs(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) const struct nlm_args *args = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) const struct nlm_lock *lock = &args->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) encode_cookie(xdr, &args->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) encode_nlm_lock(xdr, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) * struct nlm_lockargs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) * bool block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) * bool exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) * struct nlm_lock alock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) * bool reclaim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) * int state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) static void nlm_xdr_enc_lockargs(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) const struct nlm_args *args = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) const struct nlm_lock *lock = &args->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) encode_cookie(xdr, &args->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) encode_bool(xdr, args->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) encode_nlm_lock(xdr, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) encode_bool(xdr, args->reclaim);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) encode_int32(xdr, args->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) * struct nlm_cancargs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * bool block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) * bool exclusive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * struct nlm_lock alock;
^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) static void nlm_xdr_enc_cancargs(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) const struct nlm_args *args = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) const struct nlm_lock *lock = &args->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) encode_cookie(xdr, &args->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) encode_bool(xdr, args->block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) encode_nlm_lock(xdr, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) * struct nlm_unlockargs {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) * struct nlm_lock alock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) static void nlm_xdr_enc_unlockargs(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) const struct nlm_args *args = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) const struct nlm_lock *lock = &args->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) encode_cookie(xdr, &args->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) encode_nlm_lock(xdr, lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) * struct nlm_res {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) * nlm_stat stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static void nlm_xdr_enc_res(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) const struct nlm_res *result = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) encode_cookie(xdr, &result->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) encode_nlm_stat(xdr, result->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) * union nlm_testrply switch (nlm_stats stat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * case LCK_DENIED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * struct nlm_holder holder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) * default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) * void;
^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) * struct nlm_testres {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) * nlm_testrply test_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) static void encode_nlm_testrply(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) const struct nlm_res *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (result->status == nlm_lck_denied)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) encode_nlm_holder(xdr, result);
^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 nlm_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_nlm_stat(xdr, result->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) encode_nlm_testrply(xdr, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^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) * NLMv3 XDR decode functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * NLMv3 result types are defined in Chapter 10 of The Open Group's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * "Protocols for Interworking: XNFS, Version 3W".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * union nlm_testrply switch (nlm_stats stat) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) * case LCK_DENIED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * struct nlm_holder holder;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) * default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) * void;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) * struct nlm_testres {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) * nlm_testrply test_stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) static int decode_nlm_testrply(struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) struct nlm_res *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) error = decode_nlm_stat(xdr, &result->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (unlikely(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (result->status == nlm_lck_denied)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) error = decode_nlm_holder(xdr, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) static int nlm_xdr_dec_testres(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) struct nlm_res *result = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) error = decode_cookie(xdr, &result->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (unlikely(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) error = decode_nlm_testrply(xdr, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * struct nlm_res {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) * netobj cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * nlm_stat stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) static int nlm_xdr_dec_res(struct rpc_rqst *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) struct xdr_stream *xdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) struct nlm_res *result = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) error = decode_cookie(xdr, &result->cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) if (unlikely(error))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) error = decode_nlm_stat(xdr, &result->status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^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) * For NLM, a void procedure really returns nothing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) #define nlm_xdr_dec_norep NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) #define PROC(proc, argtype, restype) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) [NLMPROC_##proc] = { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) .p_proc = NLMPROC_##proc, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) .p_encode = nlm_xdr_enc_##argtype, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) .p_decode = nlm_xdr_dec_##restype, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) .p_arglen = NLM_##argtype##_sz, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) .p_replen = NLM_##restype##_sz, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) .p_statidx = NLMPROC_##proc, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) .p_name = #proc, \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) static const struct rpc_procinfo nlm_procedures[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) PROC(TEST, testargs, testres),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) PROC(LOCK, lockargs, res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) PROC(CANCEL, cancargs, res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) PROC(UNLOCK, unlockargs, res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) PROC(GRANTED, testargs, res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) PROC(TEST_MSG, testargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) PROC(LOCK_MSG, lockargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) PROC(CANCEL_MSG, cancargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) PROC(UNLOCK_MSG, unlockargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) PROC(GRANTED_MSG, testargs, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) PROC(TEST_RES, testres, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) PROC(LOCK_RES, res, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) PROC(CANCEL_RES, res, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) PROC(UNLOCK_RES, res, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) PROC(GRANTED_RES, res, norep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) static unsigned int nlm_version1_counts[ARRAY_SIZE(nlm_procedures)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) static const struct rpc_version nlm_version1 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) .number = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) .nrprocs = ARRAY_SIZE(nlm_procedures),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) .procs = nlm_procedures,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) .counts = nlm_version1_counts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) static unsigned int nlm_version3_counts[ARRAY_SIZE(nlm_procedures)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) static const struct rpc_version nlm_version3 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) .number = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) .nrprocs = ARRAY_SIZE(nlm_procedures),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) .procs = nlm_procedures,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) .counts = nlm_version3_counts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) static const struct rpc_version *nlm_versions[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) [1] = &nlm_version1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) [3] = &nlm_version3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) #ifdef CONFIG_LOCKD_V4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) [4] = &nlm_version4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) static struct rpc_stat nlm_rpc_stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) const struct rpc_program nlm_program = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) .name = "lockd",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) .number = NLM_PROGRAM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) .nrvers = ARRAY_SIZE(nlm_versions),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) .version = nlm_versions,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) .stats = &nlm_rpc_stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) };
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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