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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/lockd/clnt4xdr.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/lockd/clnt4xdr.c')
-rw-r--r--ANDROID_3.4.5/fs/lockd/clnt4xdr.c605
1 files changed, 0 insertions, 605 deletions
diff --git a/ANDROID_3.4.5/fs/lockd/clnt4xdr.c b/ANDROID_3.4.5/fs/lockd/clnt4xdr.c
deleted file mode 100644
index 13ad1539..00000000
--- a/ANDROID_3.4.5/fs/lockd/clnt4xdr.c
+++ /dev/null
@@ -1,605 +0,0 @@
-/*
- * linux/fs/lockd/clnt4xdr.c
- *
- * XDR functions to encode/decode NLM version 4 RPC arguments and results.
- *
- * NLM client-side only.
- *
- * Copyright (C) 2010, Oracle. All rights reserved.
- */
-
-#include <linux/types.h>
-#include <linux/sunrpc/xdr.h>
-#include <linux/sunrpc/clnt.h>
-#include <linux/sunrpc/stats.h>
-#include <linux/lockd/lockd.h>
-
-#define NLMDBG_FACILITY NLMDBG_XDR
-
-#if (NLMCLNT_OHSIZE > XDR_MAX_NETOBJ)
-# error "NLM host name cannot be larger than XDR_MAX_NETOBJ!"
-#endif
-
-#if (NLMCLNT_OHSIZE > NLM_MAXSTRLEN)
-# error "NLM host name cannot be larger than NLM's maximum string length!"
-#endif
-
-/*
- * Declare the space requirements for NLM arguments and replies as
- * number of 32bit-words
- */
-#define NLM4_void_sz (0)
-#define NLM4_cookie_sz (1+(NLM_MAXCOOKIELEN>>2))
-#define NLM4_caller_sz (1+(NLMCLNT_OHSIZE>>2))
-#define NLM4_owner_sz (1+(NLMCLNT_OHSIZE>>2))
-#define NLM4_fhandle_sz (1+(NFS3_FHSIZE>>2))
-#define NLM4_lock_sz (5+NLM4_caller_sz+NLM4_owner_sz+NLM4_fhandle_sz)
-#define NLM4_holder_sz (6+NLM4_owner_sz)
-
-#define NLM4_testargs_sz (NLM4_cookie_sz+1+NLM4_lock_sz)
-#define NLM4_lockargs_sz (NLM4_cookie_sz+4+NLM4_lock_sz)
-#define NLM4_cancargs_sz (NLM4_cookie_sz+2+NLM4_lock_sz)
-#define NLM4_unlockargs_sz (NLM4_cookie_sz+NLM4_lock_sz)
-
-#define NLM4_testres_sz (NLM4_cookie_sz+1+NLM4_holder_sz)
-#define NLM4_res_sz (NLM4_cookie_sz+1)
-#define NLM4_norep_sz (0)
-
-
-static s64 loff_t_to_s64(loff_t offset)
-{
- s64 res;
-
- if (offset >= NLM4_OFFSET_MAX)
- res = NLM4_OFFSET_MAX;
- else if (offset <= -NLM4_OFFSET_MAX)
- res = -NLM4_OFFSET_MAX;
- else
- res = offset;
- return res;
-}
-
-static void nlm4_compute_offsets(const struct nlm_lock *lock,
- u64 *l_offset, u64 *l_len)
-{
- const struct file_lock *fl = &lock->fl;
-
- BUG_ON(fl->fl_start > NLM4_OFFSET_MAX);
- BUG_ON(fl->fl_end > NLM4_OFFSET_MAX &&
- fl->fl_end != OFFSET_MAX);
-
- *l_offset = loff_t_to_s64(fl->fl_start);
- if (fl->fl_end == OFFSET_MAX)
- *l_len = 0;
- else
- *l_len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1);
-}
-
-/*
- * Handle decode buffer overflows out-of-line.
- */
-static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
-{
- dprintk("lockd: %s prematurely hit the end of our receive buffer. "
- "Remaining buffer length is %tu words.\n",
- func, xdr->end - xdr->p);
-}
-
-
-/*
- * Encode/decode NLMv4 basic data types
- *
- * Basic NLMv4 data types are defined in Appendix II, section 6.1.4
- * of RFC 1813: "NFS Version 3 Protocol Specification" and in Chapter
- * 10 of X/Open's "Protocols for Interworking: XNFS, Version 3W".
- *
- * Not all basic data types have their own encoding and decoding
- * functions. For run-time efficiency, some data types are encoded
- * or decoded inline.
- */
-
-static void encode_bool(struct xdr_stream *xdr, const int value)
-{
- __be32 *p;
-
- p = xdr_reserve_space(xdr, 4);
- *p = value ? xdr_one : xdr_zero;
-}
-
-static void encode_int32(struct xdr_stream *xdr, const s32 value)
-{
- __be32 *p;
-
- p = xdr_reserve_space(xdr, 4);
- *p = cpu_to_be32(value);
-}
-
-/*
- * typedef opaque netobj<MAXNETOBJ_SZ>
- */
-static void encode_netobj(struct xdr_stream *xdr,
- const u8 *data, const unsigned int length)
-{
- __be32 *p;
-
- BUG_ON(length > XDR_MAX_NETOBJ);
- p = xdr_reserve_space(xdr, 4 + length);
- xdr_encode_opaque(p, data, length);
-}
-
-static int decode_netobj(struct xdr_stream *xdr,
- struct xdr_netobj *obj)
-{
- u32 length;
- __be32 *p;
-
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(p == NULL))
- goto out_overflow;
- length = be32_to_cpup(p++);
- if (unlikely(length > XDR_MAX_NETOBJ))
- goto out_size;
- obj->len = length;
- obj->data = (u8 *)p;
- return 0;
-out_size:
- dprintk("NFS: returned netobj was too long: %u\n", length);
- return -EIO;
-out_overflow:
- print_overflow_msg(__func__, xdr);
- return -EIO;
-}
-
-/*
- * netobj cookie;
- */
-static void encode_cookie(struct xdr_stream *xdr,
- const struct nlm_cookie *cookie)
-{
- BUG_ON(cookie->len > NLM_MAXCOOKIELEN);
- encode_netobj(xdr, (u8 *)&cookie->data, cookie->len);
-}
-
-static int decode_cookie(struct xdr_stream *xdr,
- struct nlm_cookie *cookie)
-{
- u32 length;
- __be32 *p;
-
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(p == NULL))
- goto out_overflow;
- length = be32_to_cpup(p++);
- /* apparently HPUX can return empty cookies */
- if (length == 0)
- goto out_hpux;
- if (length > NLM_MAXCOOKIELEN)
- goto out_size;
- p = xdr_inline_decode(xdr, length);
- if (unlikely(p == NULL))
- goto out_overflow;
- cookie->len = length;
- memcpy(cookie->data, p, length);
- return 0;
-out_hpux:
- cookie->len = 4;
- memset(cookie->data, 0, 4);
- return 0;
-out_size:
- dprintk("NFS: returned cookie was too long: %u\n", length);
- return -EIO;
-out_overflow:
- print_overflow_msg(__func__, xdr);
- return -EIO;
-}
-
-/*
- * netobj fh;
- */
-static void encode_fh(struct xdr_stream *xdr, const struct nfs_fh *fh)
-{
- BUG_ON(fh->size > NFS3_FHSIZE);
- encode_netobj(xdr, (u8 *)&fh->data, fh->size);
-}
-
-/*
- * enum nlm4_stats {
- * NLM4_GRANTED = 0,
- * NLM4_DENIED = 1,
- * NLM4_DENIED_NOLOCKS = 2,
- * NLM4_BLOCKED = 3,
- * NLM4_DENIED_GRACE_PERIOD = 4,
- * NLM4_DEADLCK = 5,
- * NLM4_ROFS = 6,
- * NLM4_STALE_FH = 7,
- * NLM4_FBIG = 8,
- * NLM4_FAILED = 9
- * };
- *
- * struct nlm4_stat {
- * nlm4_stats stat;
- * };
- *
- * NB: we don't swap bytes for the NLM status values. The upper
- * layers deal directly with the status value in network byte
- * order.
- */
-static void encode_nlm4_stat(struct xdr_stream *xdr,
- const __be32 stat)
-{
- __be32 *p;
-
- BUG_ON(be32_to_cpu(stat) > NLM_FAILED);
- p = xdr_reserve_space(xdr, 4);
- *p = stat;
-}
-
-static int decode_nlm4_stat(struct xdr_stream *xdr, __be32 *stat)
-{
- __be32 *p;
-
- p = xdr_inline_decode(xdr, 4);
- if (unlikely(p == NULL))
- goto out_overflow;
- if (unlikely(ntohl(*p) > ntohl(nlm4_failed)))
- goto out_bad_xdr;
- *stat = *p;
- return 0;
-out_bad_xdr:
- dprintk("%s: server returned invalid nlm4_stats value: %u\n",
- __func__, be32_to_cpup(p));
- return -EIO;
-out_overflow:
- print_overflow_msg(__func__, xdr);
- return -EIO;
-}
-
-/*
- * struct nlm4_holder {
- * bool exclusive;
- * int32 svid;
- * netobj oh;
- * uint64 l_offset;
- * uint64 l_len;
- * };
- */
-static void encode_nlm4_holder(struct xdr_stream *xdr,
- const struct nlm_res *result)
-{
- const struct nlm_lock *lock = &result->lock;
- u64 l_offset, l_len;
- __be32 *p;
-
- encode_bool(xdr, lock->fl.fl_type == F_RDLCK);
- encode_int32(xdr, lock->svid);
- encode_netobj(xdr, lock->oh.data, lock->oh.len);
-
- p = xdr_reserve_space(xdr, 4 + 4);
- nlm4_compute_offsets(lock, &l_offset, &l_len);
- p = xdr_encode_hyper(p, l_offset);
- xdr_encode_hyper(p, l_len);
-}
-
-static int decode_nlm4_holder(struct xdr_stream *xdr, struct nlm_res *result)
-{
- struct nlm_lock *lock = &result->lock;
- struct file_lock *fl = &lock->fl;
- u64 l_offset, l_len;
- u32 exclusive;
- int error;
- __be32 *p;
- s32 end;
-
- memset(lock, 0, sizeof(*lock));
- locks_init_lock(fl);
-
- p = xdr_inline_decode(xdr, 4 + 4);
- if (unlikely(p == NULL))
- goto out_overflow;
- exclusive = be32_to_cpup(p++);
- lock->svid = be32_to_cpup(p);
- fl->fl_pid = (pid_t)lock->svid;
-
- error = decode_netobj(xdr, &lock->oh);
- if (unlikely(error))
- goto out;
-
- p = xdr_inline_decode(xdr, 8 + 8);
- if (unlikely(p == NULL))
- goto out_overflow;
-
- fl->fl_flags = FL_POSIX;
- fl->fl_type = exclusive != 0 ? F_WRLCK : F_RDLCK;
- p = xdr_decode_hyper(p, &l_offset);
- xdr_decode_hyper(p, &l_len);
- end = l_offset + l_len - 1;
-
- fl->fl_start = (loff_t)l_offset;
- if (l_len == 0 || end < 0)
- fl->fl_end = OFFSET_MAX;
- else
- fl->fl_end = (loff_t)end;
- error = 0;
-out:
- return error;
-out_overflow:
- print_overflow_msg(__func__, xdr);
- return -EIO;
-}
-
-/*
- * string caller_name<LM_MAXSTRLEN>;
- */
-static void encode_caller_name(struct xdr_stream *xdr, const char *name)
-{
- /* NB: client-side does not set lock->len */
- u32 length = strlen(name);
- __be32 *p;
-
- BUG_ON(length > NLM_MAXSTRLEN);
- p = xdr_reserve_space(xdr, 4 + length);
- xdr_encode_opaque(p, name, length);
-}
-
-/*
- * struct nlm4_lock {
- * string caller_name<LM_MAXSTRLEN>;
- * netobj fh;
- * netobj oh;
- * int32 svid;
- * uint64 l_offset;
- * uint64 l_len;
- * };
- */
-static void encode_nlm4_lock(struct xdr_stream *xdr,
- const struct nlm_lock *lock)
-{
- u64 l_offset, l_len;
- __be32 *p;
-
- encode_caller_name(xdr, lock->caller);
- encode_fh(xdr, &lock->fh);
- encode_netobj(xdr, lock->oh.data, lock->oh.len);
-
- p = xdr_reserve_space(xdr, 4 + 8 + 8);
- *p++ = cpu_to_be32(lock->svid);
-
- nlm4_compute_offsets(lock, &l_offset, &l_len);
- p = xdr_encode_hyper(p, l_offset);
- xdr_encode_hyper(p, l_len);
-}
-
-
-/*
- * NLMv4 XDR encode functions
- *
- * NLMv4 argument types are defined in Appendix II of RFC 1813:
- * "NFS Version 3 Protocol Specification" and Chapter 10 of X/Open's
- * "Protocols for Interworking: XNFS, Version 3W".
- */
-
-/*
- * struct nlm4_testargs {
- * netobj cookie;
- * bool exclusive;
- * struct nlm4_lock alock;
- * };
- */
-static void nlm4_xdr_enc_testargs(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- const struct nlm_args *args)
-{
- const struct nlm_lock *lock = &args->lock;
-
- encode_cookie(xdr, &args->cookie);
- encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm4_lock(xdr, lock);
-}
-
-/*
- * struct nlm4_lockargs {
- * netobj cookie;
- * bool block;
- * bool exclusive;
- * struct nlm4_lock alock;
- * bool reclaim;
- * int state;
- * };
- */
-static void nlm4_xdr_enc_lockargs(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- const struct nlm_args *args)
-{
- const struct nlm_lock *lock = &args->lock;
-
- encode_cookie(xdr, &args->cookie);
- encode_bool(xdr, args->block);
- encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm4_lock(xdr, lock);
- encode_bool(xdr, args->reclaim);
- encode_int32(xdr, args->state);
-}
-
-/*
- * struct nlm4_cancargs {
- * netobj cookie;
- * bool block;
- * bool exclusive;
- * struct nlm4_lock alock;
- * };
- */
-static void nlm4_xdr_enc_cancargs(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- const struct nlm_args *args)
-{
- const struct nlm_lock *lock = &args->lock;
-
- encode_cookie(xdr, &args->cookie);
- encode_bool(xdr, args->block);
- encode_bool(xdr, lock->fl.fl_type == F_WRLCK);
- encode_nlm4_lock(xdr, lock);
-}
-
-/*
- * struct nlm4_unlockargs {
- * netobj cookie;
- * struct nlm4_lock alock;
- * };
- */
-static void nlm4_xdr_enc_unlockargs(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- const struct nlm_args *args)
-{
- const struct nlm_lock *lock = &args->lock;
-
- encode_cookie(xdr, &args->cookie);
- encode_nlm4_lock(xdr, lock);
-}
-
-/*
- * struct nlm4_res {
- * netobj cookie;
- * nlm4_stat stat;
- * };
- */
-static void nlm4_xdr_enc_res(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- const struct nlm_res *result)
-{
- encode_cookie(xdr, &result->cookie);
- encode_nlm4_stat(xdr, result->status);
-}
-
-/*
- * union nlm4_testrply switch (nlm4_stats stat) {
- * case NLM4_DENIED:
- * struct nlm4_holder holder;
- * default:
- * void;
- * };
- *
- * struct nlm4_testres {
- * netobj cookie;
- * nlm4_testrply test_stat;
- * };
- */
-static void nlm4_xdr_enc_testres(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- const struct nlm_res *result)
-{
- encode_cookie(xdr, &result->cookie);
- encode_nlm4_stat(xdr, result->status);
- if (result->status == nlm_lck_denied)
- encode_nlm4_holder(xdr, result);
-}
-
-
-/*
- * NLMv4 XDR decode functions
- *
- * NLMv4 argument types are defined in Appendix II of RFC 1813:
- * "NFS Version 3 Protocol Specification" and Chapter 10 of X/Open's
- * "Protocols for Interworking: XNFS, Version 3W".
- */
-
-/*
- * union nlm4_testrply switch (nlm4_stats stat) {
- * case NLM4_DENIED:
- * struct nlm4_holder holder;
- * default:
- * void;
- * };
- *
- * struct nlm4_testres {
- * netobj cookie;
- * nlm4_testrply test_stat;
- * };
- */
-static int decode_nlm4_testrply(struct xdr_stream *xdr,
- struct nlm_res *result)
-{
- int error;
-
- error = decode_nlm4_stat(xdr, &result->status);
- if (unlikely(error))
- goto out;
- if (result->status == nlm_lck_denied)
- error = decode_nlm4_holder(xdr, result);
-out:
- return error;
-}
-
-static int nlm4_xdr_dec_testres(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- struct nlm_res *result)
-{
- int error;
-
- error = decode_cookie(xdr, &result->cookie);
- if (unlikely(error))
- goto out;
- error = decode_nlm4_testrply(xdr, result);
-out:
- return error;
-}
-
-/*
- * struct nlm4_res {
- * netobj cookie;
- * nlm4_stat stat;
- * };
- */
-static int nlm4_xdr_dec_res(struct rpc_rqst *req,
- struct xdr_stream *xdr,
- struct nlm_res *result)
-{
- int error;
-
- error = decode_cookie(xdr, &result->cookie);
- if (unlikely(error))
- goto out;
- error = decode_nlm4_stat(xdr, &result->status);
-out:
- return error;
-}
-
-
-/*
- * For NLM, a void procedure really returns nothing
- */
-#define nlm4_xdr_dec_norep NULL
-
-#define PROC(proc, argtype, restype) \
-[NLMPROC_##proc] = { \
- .p_proc = NLMPROC_##proc, \
- .p_encode = (kxdreproc_t)nlm4_xdr_enc_##argtype, \
- .p_decode = (kxdrdproc_t)nlm4_xdr_dec_##restype, \
- .p_arglen = NLM4_##argtype##_sz, \
- .p_replen = NLM4_##restype##_sz, \
- .p_statidx = NLMPROC_##proc, \
- .p_name = #proc, \
- }
-
-static struct rpc_procinfo nlm4_procedures[] = {
- PROC(TEST, testargs, testres),
- PROC(LOCK, lockargs, res),
- PROC(CANCEL, cancargs, res),
- PROC(UNLOCK, unlockargs, res),
- PROC(GRANTED, testargs, res),
- PROC(TEST_MSG, testargs, norep),
- PROC(LOCK_MSG, lockargs, norep),
- PROC(CANCEL_MSG, cancargs, norep),
- PROC(UNLOCK_MSG, unlockargs, norep),
- PROC(GRANTED_MSG, testargs, norep),
- PROC(TEST_RES, testres, norep),
- PROC(LOCK_RES, res, norep),
- PROC(CANCEL_RES, res, norep),
- PROC(UNLOCK_RES, res, norep),
- PROC(GRANTED_RES, res, norep),
-};
-
-const struct rpc_version nlm_version4 = {
- .number = 4,
- .nrprocs = ARRAY_SIZE(nlm4_procedures),
- .procs = nlm4_procedures,
-};