| 1 | // SPDX-License-Identifier: GPL-2.0 | 
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| 2 | /* | 
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| 3 | * linux/fs/lockd/svc4proc.c | 
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| 4 | * | 
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| 5 | * Lockd server procedures. We don't implement the NLM_*_RES | 
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| 6 | * procedures because we don't use the async procedures. | 
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| 7 | * | 
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| 8 | * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de> | 
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| 9 | */ | 
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| 10 |  | 
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| 11 | #include <linux/types.h> | 
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| 12 | #include <linux/time.h> | 
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| 13 | #include <linux/lockd/lockd.h> | 
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| 14 | #include <linux/lockd/share.h> | 
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| 15 | #include <linux/sunrpc/svc_xprt.h> | 
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| 16 |  | 
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| 17 | #define NLMDBG_FACILITY		NLMDBG_CLIENT | 
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| 18 |  | 
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| 19 | /* | 
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| 20 | * Obtain client and file from arguments | 
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| 21 | */ | 
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| 22 | static __be32 | 
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| 23 | nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp, | 
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| 24 | struct nlm_host **hostp, struct nlm_file **filp) | 
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| 25 | { | 
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| 26 | struct nlm_host		*host = NULL; | 
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| 27 | struct nlm_file		*file = NULL; | 
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| 28 | struct nlm_lock		*lock = &argp->lock; | 
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| 29 | __be32			error = 0; | 
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| 30 |  | 
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| 31 | /* nfsd callbacks must have been installed for this procedure */ | 
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| 32 | if (!nlmsvc_ops) | 
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| 33 | return nlm_lck_denied_nolocks; | 
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| 34 |  | 
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| 35 | if (lock->lock_start > OFFSET_MAX || | 
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| 36 | (lock->lock_len && ((lock->lock_len - 1) > (OFFSET_MAX - lock->lock_start)))) | 
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| 37 | return nlm4_fbig; | 
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| 38 |  | 
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| 39 | /* Obtain host handle */ | 
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| 40 | if (!(host = nlmsvc_lookup_host(rqstp, hostname: lock->caller, hostname_len: lock->len)) | 
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| 41 | || (argp->monitor && nsm_monitor(host) < 0)) | 
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| 42 | goto no_locks; | 
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| 43 | *hostp = host; | 
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| 44 |  | 
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| 45 | /* Obtain file pointer. Not used by FREE_ALL call. */ | 
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| 46 | if (filp != NULL) { | 
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| 47 | int mode = lock_to_openmode(&lock->fl); | 
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| 48 |  | 
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| 49 | lock->fl.c.flc_flags = FL_POSIX; | 
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| 50 |  | 
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| 51 | error = nlm_lookup_file(rqstp, &file, lock); | 
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| 52 | if (error) | 
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| 53 | goto no_locks; | 
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| 54 | *filp = file; | 
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| 55 |  | 
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| 56 | /* Set up the missing parts of the file_lock structure */ | 
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| 57 | lock->fl.c.flc_file = file->f_file[mode]; | 
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| 58 | lock->fl.c.flc_pid = current->tgid; | 
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| 59 | lock->fl.fl_start = (loff_t)lock->lock_start; | 
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| 60 | lock->fl.fl_end = lock->lock_len ? | 
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| 61 | (loff_t)(lock->lock_start + lock->lock_len - 1) : | 
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| 62 | OFFSET_MAX; | 
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| 63 | lock->fl.fl_lmops = &nlmsvc_lock_operations; | 
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| 64 | nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid); | 
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| 65 | if (!lock->fl.c.flc_owner) { | 
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| 66 | /* lockowner allocation has failed */ | 
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| 67 | nlmsvc_release_host(host); | 
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| 68 | return nlm_lck_denied_nolocks; | 
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| 69 | } | 
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| 70 | } | 
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| 71 |  | 
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| 72 | return 0; | 
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| 73 |  | 
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| 74 | no_locks: | 
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| 75 | nlmsvc_release_host(host); | 
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| 76 | if (error) | 
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| 77 | return error; | 
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| 78 | return nlm_lck_denied_nolocks; | 
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| 79 | } | 
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| 80 |  | 
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| 81 | /* | 
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| 82 | * NULL: Test for presence of service | 
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| 83 | */ | 
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| 84 | static __be32 | 
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| 85 | nlm4svc_proc_null(struct svc_rqst *rqstp) | 
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| 86 | { | 
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| 87 | dprintk( "lockd: NULL          called\n"); | 
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| 88 | return rpc_success; | 
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| 89 | } | 
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| 90 |  | 
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| 91 | /* | 
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| 92 | * TEST: Check for conflicting lock | 
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| 93 | */ | 
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| 94 | static __be32 | 
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| 95 | __nlm4svc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 96 | { | 
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| 97 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 98 | struct nlm_host	*host; | 
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| 99 | struct nlm_file	*file; | 
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| 100 | struct nlm_lockowner *test_owner; | 
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| 101 | __be32 rc = rpc_success; | 
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| 102 |  | 
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| 103 | dprintk( "lockd: TEST4        called\n"); | 
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| 104 | resp->cookie = argp->cookie; | 
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| 105 |  | 
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| 106 | /* Obtain client and file */ | 
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| 107 | if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 108 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 109 |  | 
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| 110 | test_owner = argp->lock.fl.c.flc_owner; | 
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| 111 | /* Now check for conflicting locks */ | 
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| 112 | resp->status = nlmsvc_testlock(rqstp, file, host, lock: &argp->lock, | 
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| 113 | conflock: &resp->lock); | 
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| 114 | if (resp->status == nlm_drop_reply) | 
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| 115 | rc = rpc_drop_reply; | 
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| 116 | else | 
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| 117 | dprintk( "lockd: TEST4        status %d\n", ntohl(resp->status)); | 
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| 118 |  | 
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| 119 | nlmsvc_put_lockowner(test_owner); | 
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| 120 | nlmsvc_release_host(host); | 
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| 121 | nlm_release_file(file); | 
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| 122 | return rc; | 
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| 123 | } | 
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| 124 |  | 
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| 125 | static __be32 | 
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| 126 | nlm4svc_proc_test(struct svc_rqst *rqstp) | 
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| 127 | { | 
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| 128 | return __nlm4svc_proc_test(rqstp, resp: rqstp->rq_resp); | 
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| 129 | } | 
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| 130 |  | 
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| 131 | static __be32 | 
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| 132 | __nlm4svc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 133 | { | 
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| 134 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 135 | struct nlm_host	*host; | 
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| 136 | struct nlm_file	*file; | 
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| 137 | __be32 rc = rpc_success; | 
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| 138 |  | 
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| 139 | dprintk( "lockd: LOCK          called\n"); | 
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| 140 |  | 
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| 141 | resp->cookie = argp->cookie; | 
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| 142 |  | 
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| 143 | /* Obtain client and file */ | 
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| 144 | if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 145 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 146 |  | 
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| 147 | /* Now try to lock the file */ | 
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| 148 | resp->status = nlmsvc_lock(rqstp, file, host, &argp->lock, | 
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| 149 | argp->block, &argp->cookie, | 
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| 150 | argp->reclaim); | 
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| 151 | if (resp->status == nlm_drop_reply) | 
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| 152 | rc = rpc_drop_reply; | 
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| 153 | else | 
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| 154 | dprintk( "lockd: LOCK         status %d\n", ntohl(resp->status)); | 
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| 155 |  | 
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| 156 | nlmsvc_release_lockowner(&argp->lock); | 
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| 157 | nlmsvc_release_host(host); | 
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| 158 | nlm_release_file(file); | 
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| 159 | return rc; | 
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| 160 | } | 
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| 161 |  | 
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| 162 | static __be32 | 
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| 163 | nlm4svc_proc_lock(struct svc_rqst *rqstp) | 
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| 164 | { | 
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| 165 | return __nlm4svc_proc_lock(rqstp, resp: rqstp->rq_resp); | 
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| 166 | } | 
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| 167 |  | 
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| 168 | static __be32 | 
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| 169 | __nlm4svc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 170 | { | 
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| 171 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 172 | struct nlm_host	*host; | 
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| 173 | struct nlm_file	*file; | 
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| 174 |  | 
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| 175 | dprintk( "lockd: CANCEL        called\n"); | 
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| 176 |  | 
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| 177 | resp->cookie = argp->cookie; | 
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| 178 |  | 
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| 179 | /* Don't accept requests during grace period */ | 
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| 180 | if (locks_in_grace(SVC_NET(rqstp))) { | 
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| 181 | resp->status = nlm_lck_denied_grace_period; | 
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| 182 | return rpc_success; | 
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| 183 | } | 
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| 184 |  | 
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| 185 | /* Obtain client and file */ | 
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| 186 | if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 187 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 188 |  | 
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| 189 | /* Try to cancel request. */ | 
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| 190 | resp->status = nlmsvc_cancel_blocked(SVC_NET(rqstp), file, &argp->lock); | 
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| 191 |  | 
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| 192 | dprintk( "lockd: CANCEL        status %d\n", ntohl(resp->status)); | 
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| 193 | nlmsvc_release_lockowner(&argp->lock); | 
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| 194 | nlmsvc_release_host(host); | 
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| 195 | nlm_release_file(file); | 
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| 196 | return rpc_success; | 
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| 197 | } | 
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| 198 |  | 
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| 199 | static __be32 | 
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| 200 | nlm4svc_proc_cancel(struct svc_rqst *rqstp) | 
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| 201 | { | 
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| 202 | return __nlm4svc_proc_cancel(rqstp, resp: rqstp->rq_resp); | 
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| 203 | } | 
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| 204 |  | 
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| 205 | /* | 
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| 206 | * UNLOCK: release a lock | 
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| 207 | */ | 
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| 208 | static __be32 | 
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| 209 | __nlm4svc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 210 | { | 
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| 211 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 212 | struct nlm_host	*host; | 
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| 213 | struct nlm_file	*file; | 
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| 214 |  | 
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| 215 | dprintk( "lockd: UNLOCK        called\n"); | 
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| 216 |  | 
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| 217 | resp->cookie = argp->cookie; | 
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| 218 |  | 
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| 219 | /* Don't accept new lock requests during grace period */ | 
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| 220 | if (locks_in_grace(SVC_NET(rqstp))) { | 
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| 221 | resp->status = nlm_lck_denied_grace_period; | 
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| 222 | return rpc_success; | 
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| 223 | } | 
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| 224 |  | 
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| 225 | /* Obtain client and file */ | 
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| 226 | if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 227 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 228 |  | 
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| 229 | /* Now try to remove the lock */ | 
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| 230 | resp->status = nlmsvc_unlock(SVC_NET(rqstp), file, &argp->lock); | 
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| 231 |  | 
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| 232 | dprintk( "lockd: UNLOCK        status %d\n", ntohl(resp->status)); | 
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| 233 | nlmsvc_release_lockowner(&argp->lock); | 
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| 234 | nlmsvc_release_host(host); | 
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| 235 | nlm_release_file(file); | 
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| 236 | return rpc_success; | 
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| 237 | } | 
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| 238 |  | 
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| 239 | static __be32 | 
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| 240 | nlm4svc_proc_unlock(struct svc_rqst *rqstp) | 
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| 241 | { | 
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| 242 | return __nlm4svc_proc_unlock(rqstp, resp: rqstp->rq_resp); | 
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| 243 | } | 
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| 244 |  | 
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| 245 | /* | 
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| 246 | * GRANTED: A server calls us to tell that a process' lock request | 
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| 247 | * was granted | 
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| 248 | */ | 
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| 249 | static __be32 | 
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| 250 | __nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 251 | { | 
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| 252 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 253 |  | 
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| 254 | resp->cookie = argp->cookie; | 
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| 255 |  | 
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| 256 | dprintk( "lockd: GRANTED       called\n"); | 
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| 257 | resp->status = nlmclnt_grant(addr: svc_addr(rqst: rqstp), lock: &argp->lock); | 
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| 258 | dprintk( "lockd: GRANTED       status %d\n", ntohl(resp->status)); | 
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| 259 | return rpc_success; | 
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| 260 | } | 
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| 261 |  | 
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| 262 | static __be32 | 
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| 263 | nlm4svc_proc_granted(struct svc_rqst *rqstp) | 
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| 264 | { | 
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| 265 | return __nlm4svc_proc_granted(rqstp, resp: rqstp->rq_resp); | 
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| 266 | } | 
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| 267 |  | 
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| 268 | /* | 
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| 269 | * This is the generic lockd callback for async RPC calls | 
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| 270 | */ | 
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| 271 | static void nlm4svc_callback_exit(struct rpc_task *task, void *data) | 
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| 272 | { | 
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| 273 | } | 
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| 274 |  | 
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| 275 | static void nlm4svc_callback_release(void *data) | 
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| 276 | { | 
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| 277 | nlmsvc_release_call(data); | 
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| 278 | } | 
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| 279 |  | 
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| 280 | static const struct rpc_call_ops nlm4svc_callback_ops = { | 
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| 281 | .rpc_call_done = nlm4svc_callback_exit, | 
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| 282 | .rpc_release = nlm4svc_callback_release, | 
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| 283 | }; | 
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| 284 |  | 
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| 285 | /* | 
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| 286 | * `Async' versions of the above service routines. They aren't really, | 
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| 287 | * because we send the callback before the reply proper. I hope this | 
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| 288 | * doesn't break any clients. | 
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| 289 | */ | 
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| 290 | static __be32 nlm4svc_callback(struct svc_rqst *rqstp, u32 proc, | 
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| 291 | __be32 (*func)(struct svc_rqst *,  struct nlm_res *)) | 
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| 292 | { | 
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| 293 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 294 | struct nlm_host	*host; | 
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| 295 | struct nlm_rqst	*call; | 
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| 296 | __be32 stat; | 
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| 297 |  | 
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| 298 | host = nlmsvc_lookup_host(rqstp, | 
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| 299 | hostname: argp->lock.caller, | 
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| 300 | hostname_len: argp->lock.len); | 
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| 301 | if (host == NULL) | 
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| 302 | return rpc_system_err; | 
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| 303 |  | 
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| 304 | call = nlm_alloc_call(host); | 
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| 305 | nlmsvc_release_host(host); | 
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| 306 | if (call == NULL) | 
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| 307 | return rpc_system_err; | 
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| 308 |  | 
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| 309 | stat = func(rqstp, &call->a_res); | 
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| 310 | if (stat != 0) { | 
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| 311 | nlmsvc_release_call(call); | 
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| 312 | return stat; | 
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| 313 | } | 
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| 314 |  | 
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| 315 | call->a_flags = RPC_TASK_ASYNC; | 
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| 316 | if (nlm_async_reply(call, proc, &nlm4svc_callback_ops) < 0) | 
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| 317 | return rpc_system_err; | 
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| 318 | return rpc_success; | 
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| 319 | } | 
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| 320 |  | 
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| 321 | static __be32 nlm4svc_proc_test_msg(struct svc_rqst *rqstp) | 
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| 322 | { | 
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| 323 | dprintk( "lockd: TEST_MSG      called\n"); | 
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| 324 | return nlm4svc_callback(rqstp, NLMPROC_TEST_RES, func: __nlm4svc_proc_test); | 
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| 325 | } | 
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| 326 |  | 
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| 327 | static __be32 nlm4svc_proc_lock_msg(struct svc_rqst *rqstp) | 
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| 328 | { | 
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| 329 | dprintk( "lockd: LOCK_MSG      called\n"); | 
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| 330 | return nlm4svc_callback(rqstp, NLMPROC_LOCK_RES, func: __nlm4svc_proc_lock); | 
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| 331 | } | 
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| 332 |  | 
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| 333 | static __be32 nlm4svc_proc_cancel_msg(struct svc_rqst *rqstp) | 
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| 334 | { | 
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| 335 | dprintk( "lockd: CANCEL_MSG    called\n"); | 
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| 336 | return nlm4svc_callback(rqstp, NLMPROC_CANCEL_RES, func: __nlm4svc_proc_cancel); | 
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| 337 | } | 
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| 338 |  | 
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| 339 | static __be32 nlm4svc_proc_unlock_msg(struct svc_rqst *rqstp) | 
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| 340 | { | 
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| 341 | dprintk( "lockd: UNLOCK_MSG    called\n"); | 
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| 342 | return nlm4svc_callback(rqstp, NLMPROC_UNLOCK_RES, func: __nlm4svc_proc_unlock); | 
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| 343 | } | 
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| 344 |  | 
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| 345 | static __be32 nlm4svc_proc_granted_msg(struct svc_rqst *rqstp) | 
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| 346 | { | 
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| 347 | dprintk( "lockd: GRANTED_MSG   called\n"); | 
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| 348 | return nlm4svc_callback(rqstp, NLMPROC_GRANTED_RES, func: __nlm4svc_proc_granted); | 
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| 349 | } | 
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| 350 |  | 
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| 351 | /* | 
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| 352 | * SHARE: create a DOS share or alter existing share. | 
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| 353 | */ | 
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| 354 | static __be32 | 
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| 355 | nlm4svc_proc_share(struct svc_rqst *rqstp) | 
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| 356 | { | 
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| 357 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 358 | struct nlm_res *resp = rqstp->rq_resp; | 
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| 359 | struct nlm_host	*host; | 
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| 360 | struct nlm_file	*file; | 
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| 361 |  | 
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| 362 | dprintk( "lockd: SHARE         called\n"); | 
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| 363 |  | 
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| 364 | resp->cookie = argp->cookie; | 
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| 365 |  | 
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| 366 | /* Don't accept new lock requests during grace period */ | 
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| 367 | if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) { | 
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| 368 | resp->status = nlm_lck_denied_grace_period; | 
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| 369 | return rpc_success; | 
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| 370 | } | 
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| 371 |  | 
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| 372 | /* Obtain client and file */ | 
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| 373 | if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 374 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 375 |  | 
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| 376 | /* Now try to create the share */ | 
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| 377 | resp->status = nlmsvc_share_file(host, file, argp); | 
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| 378 |  | 
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| 379 | dprintk( "lockd: SHARE         status %d\n", ntohl(resp->status)); | 
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| 380 | nlmsvc_release_lockowner(&argp->lock); | 
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| 381 | nlmsvc_release_host(host); | 
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| 382 | nlm_release_file(file); | 
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| 383 | return rpc_success; | 
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| 384 | } | 
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| 385 |  | 
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| 386 | /* | 
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| 387 | * UNSHARE: Release a DOS share. | 
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| 388 | */ | 
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| 389 | static __be32 | 
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| 390 | nlm4svc_proc_unshare(struct svc_rqst *rqstp) | 
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| 391 | { | 
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| 392 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 393 | struct nlm_res *resp = rqstp->rq_resp; | 
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| 394 | struct nlm_host	*host; | 
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| 395 | struct nlm_file	*file; | 
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| 396 |  | 
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| 397 | dprintk( "lockd: UNSHARE       called\n"); | 
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| 398 |  | 
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| 399 | resp->cookie = argp->cookie; | 
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| 400 |  | 
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| 401 | /* Don't accept requests during grace period */ | 
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| 402 | if (locks_in_grace(SVC_NET(rqstp))) { | 
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| 403 | resp->status = nlm_lck_denied_grace_period; | 
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| 404 | return rpc_success; | 
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| 405 | } | 
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| 406 |  | 
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| 407 | /* Obtain client and file */ | 
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| 408 | if ((resp->status = nlm4svc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 409 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 410 |  | 
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| 411 | /* Now try to lock the file */ | 
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| 412 | resp->status = nlmsvc_unshare_file(host, file, argp); | 
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| 413 |  | 
|---|
| 414 | dprintk( "lockd: UNSHARE       status %d\n", ntohl(resp->status)); | 
|---|
| 415 | nlmsvc_release_lockowner(&argp->lock); | 
|---|
| 416 | nlmsvc_release_host(host); | 
|---|
| 417 | nlm_release_file(file); | 
|---|
| 418 | return rpc_success; | 
|---|
| 419 | } | 
|---|
| 420 |  | 
|---|
| 421 | /* | 
|---|
| 422 | * NM_LOCK: Create an unmonitored lock | 
|---|
| 423 | */ | 
|---|
| 424 | static __be32 | 
|---|
| 425 | nlm4svc_proc_nm_lock(struct svc_rqst *rqstp) | 
|---|
| 426 | { | 
|---|
| 427 | struct nlm_args *argp = rqstp->rq_argp; | 
|---|
| 428 |  | 
|---|
| 429 | dprintk( "lockd: NM_LOCK       called\n"); | 
|---|
| 430 |  | 
|---|
| 431 | argp->monitor = 0;		/* just clean the monitor flag */ | 
|---|
| 432 | return nlm4svc_proc_lock(rqstp); | 
|---|
| 433 | } | 
|---|
| 434 |  | 
|---|
| 435 | /* | 
|---|
| 436 | * FREE_ALL: Release all locks and shares held by client | 
|---|
| 437 | */ | 
|---|
| 438 | static __be32 | 
|---|
| 439 | nlm4svc_proc_free_all(struct svc_rqst *rqstp) | 
|---|
| 440 | { | 
|---|
| 441 | struct nlm_args *argp = rqstp->rq_argp; | 
|---|
| 442 | struct nlm_host	*host; | 
|---|
| 443 |  | 
|---|
| 444 | /* Obtain client */ | 
|---|
| 445 | if (nlm4svc_retrieve_args(rqstp, argp, hostp: &host, NULL)) | 
|---|
| 446 | return rpc_success; | 
|---|
| 447 |  | 
|---|
| 448 | nlmsvc_free_host_resources(host); | 
|---|
| 449 | nlmsvc_release_host(host); | 
|---|
| 450 | return rpc_success; | 
|---|
| 451 | } | 
|---|
| 452 |  | 
|---|
| 453 | /* | 
|---|
| 454 | * SM_NOTIFY: private callback from statd (not part of official NLM proto) | 
|---|
| 455 | */ | 
|---|
| 456 | static __be32 | 
|---|
| 457 | nlm4svc_proc_sm_notify(struct svc_rqst *rqstp) | 
|---|
| 458 | { | 
|---|
| 459 | struct nlm_reboot *argp = rqstp->rq_argp; | 
|---|
| 460 |  | 
|---|
| 461 | dprintk( "lockd: SM_NOTIFY     called\n"); | 
|---|
| 462 |  | 
|---|
| 463 | if (!nlm_privileged_requester(rqstp)) { | 
|---|
| 464 | char buf[RPC_MAX_ADDRBUFLEN]; | 
|---|
| 465 | printk(KERN_WARNING "lockd: rejected NSM callback from %s\n", | 
|---|
| 466 | svc_print_addr(rqstp, buf, sizeof(buf))); | 
|---|
| 467 | return rpc_system_err; | 
|---|
| 468 | } | 
|---|
| 469 |  | 
|---|
| 470 | nlm_host_rebooted(SVC_NET(rqstp), argp); | 
|---|
| 471 | return rpc_success; | 
|---|
| 472 | } | 
|---|
| 473 |  | 
|---|
| 474 | /* | 
|---|
| 475 | * client sent a GRANTED_RES, let's remove the associated block | 
|---|
| 476 | */ | 
|---|
| 477 | static __be32 | 
|---|
| 478 | nlm4svc_proc_granted_res(struct svc_rqst *rqstp) | 
|---|
| 479 | { | 
|---|
| 480 | struct nlm_res *argp = rqstp->rq_argp; | 
|---|
| 481 |  | 
|---|
| 482 | if (!nlmsvc_ops) | 
|---|
| 483 | return rpc_success; | 
|---|
| 484 |  | 
|---|
| 485 | dprintk( "lockd: GRANTED_RES   called\n"); | 
|---|
| 486 |  | 
|---|
| 487 | nlmsvc_grant_reply(&argp->cookie, argp->status); | 
|---|
| 488 | return rpc_success; | 
|---|
| 489 | } | 
|---|
| 490 |  | 
|---|
| 491 | static __be32 | 
|---|
| 492 | nlm4svc_proc_unused(struct svc_rqst *rqstp) | 
|---|
| 493 | { | 
|---|
| 494 | return rpc_proc_unavail; | 
|---|
| 495 | } | 
|---|
| 496 |  | 
|---|
| 497 |  | 
|---|
| 498 | /* | 
|---|
| 499 | * NLM Server procedures. | 
|---|
| 500 | */ | 
|---|
| 501 |  | 
|---|
| 502 | struct nlm_void			{ int dummy; }; | 
|---|
| 503 |  | 
|---|
| 504 | #define	Ck	(1+XDR_QUADLEN(NLM_MAXCOOKIELEN))	/* cookie */ | 
|---|
| 505 | #define	No	(1+1024/4)				/* netobj */ | 
|---|
| 506 | #define	St	1					/* status */ | 
|---|
| 507 | #define	Rg	4					/* range (offset + length) */ | 
|---|
| 508 |  | 
|---|
| 509 | const struct svc_procedure nlmsvc_procedures4[24] = { | 
|---|
| 510 | [NLMPROC_NULL] = { | 
|---|
| 511 | .pc_func = nlm4svc_proc_null, | 
|---|
| 512 | .pc_decode = nlm4svc_decode_void, | 
|---|
| 513 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 514 | .pc_argsize = sizeof(struct nlm_void), | 
|---|
| 515 | .pc_argzero = sizeof(struct nlm_void), | 
|---|
| 516 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 517 | .pc_xdrressize = St, | 
|---|
| 518 | .pc_name = "NULL", | 
|---|
| 519 | }, | 
|---|
| 520 | [NLMPROC_TEST] = { | 
|---|
| 521 | .pc_func = nlm4svc_proc_test, | 
|---|
| 522 | .pc_decode = nlm4svc_decode_testargs, | 
|---|
| 523 | .pc_encode = nlm4svc_encode_testres, | 
|---|
| 524 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 525 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 526 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 527 | .pc_xdrressize = Ck+St+2+No+Rg, | 
|---|
| 528 | .pc_name = "TEST", | 
|---|
| 529 | }, | 
|---|
| 530 | [NLMPROC_LOCK] = { | 
|---|
| 531 | .pc_func = nlm4svc_proc_lock, | 
|---|
| 532 | .pc_decode = nlm4svc_decode_lockargs, | 
|---|
| 533 | .pc_encode = nlm4svc_encode_res, | 
|---|
| 534 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 535 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 536 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 537 | .pc_xdrressize = Ck+St, | 
|---|
| 538 | .pc_name = "LOCK", | 
|---|
| 539 | }, | 
|---|
| 540 | [NLMPROC_CANCEL] = { | 
|---|
| 541 | .pc_func = nlm4svc_proc_cancel, | 
|---|
| 542 | .pc_decode = nlm4svc_decode_cancargs, | 
|---|
| 543 | .pc_encode = nlm4svc_encode_res, | 
|---|
| 544 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 545 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 546 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 547 | .pc_xdrressize = Ck+St, | 
|---|
| 548 | .pc_name = "CANCEL", | 
|---|
| 549 | }, | 
|---|
| 550 | [NLMPROC_UNLOCK] = { | 
|---|
| 551 | .pc_func = nlm4svc_proc_unlock, | 
|---|
| 552 | .pc_decode = nlm4svc_decode_unlockargs, | 
|---|
| 553 | .pc_encode = nlm4svc_encode_res, | 
|---|
| 554 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 555 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 556 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 557 | .pc_xdrressize = Ck+St, | 
|---|
| 558 | .pc_name = "UNLOCK", | 
|---|
| 559 | }, | 
|---|
| 560 | [NLMPROC_GRANTED] = { | 
|---|
| 561 | .pc_func = nlm4svc_proc_granted, | 
|---|
| 562 | .pc_decode = nlm4svc_decode_testargs, | 
|---|
| 563 | .pc_encode = nlm4svc_encode_res, | 
|---|
| 564 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 565 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 566 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 567 | .pc_xdrressize = Ck+St, | 
|---|
| 568 | .pc_name = "GRANTED", | 
|---|
| 569 | }, | 
|---|
| 570 | [NLMPROC_TEST_MSG] = { | 
|---|
| 571 | .pc_func = nlm4svc_proc_test_msg, | 
|---|
| 572 | .pc_decode = nlm4svc_decode_testargs, | 
|---|
| 573 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 574 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 575 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 576 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 577 | .pc_xdrressize = St, | 
|---|
| 578 | .pc_name = "TEST_MSG", | 
|---|
| 579 | }, | 
|---|
| 580 | [NLMPROC_LOCK_MSG] = { | 
|---|
| 581 | .pc_func = nlm4svc_proc_lock_msg, | 
|---|
| 582 | .pc_decode = nlm4svc_decode_lockargs, | 
|---|
| 583 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 584 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 585 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 586 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 587 | .pc_xdrressize = St, | 
|---|
| 588 | .pc_name = "LOCK_MSG", | 
|---|
| 589 | }, | 
|---|
| 590 | [NLMPROC_CANCEL_MSG] = { | 
|---|
| 591 | .pc_func = nlm4svc_proc_cancel_msg, | 
|---|
| 592 | .pc_decode = nlm4svc_decode_cancargs, | 
|---|
| 593 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 594 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 595 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 596 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 597 | .pc_xdrressize = St, | 
|---|
| 598 | .pc_name = "CANCEL_MSG", | 
|---|
| 599 | }, | 
|---|
| 600 | [NLMPROC_UNLOCK_MSG] = { | 
|---|
| 601 | .pc_func = nlm4svc_proc_unlock_msg, | 
|---|
| 602 | .pc_decode = nlm4svc_decode_unlockargs, | 
|---|
| 603 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 604 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 605 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 606 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 607 | .pc_xdrressize = St, | 
|---|
| 608 | .pc_name = "UNLOCK_MSG", | 
|---|
| 609 | }, | 
|---|
| 610 | [NLMPROC_GRANTED_MSG] = { | 
|---|
| 611 | .pc_func = nlm4svc_proc_granted_msg, | 
|---|
| 612 | .pc_decode = nlm4svc_decode_testargs, | 
|---|
| 613 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 614 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 615 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 616 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 617 | .pc_xdrressize = St, | 
|---|
| 618 | .pc_name = "GRANTED_MSG", | 
|---|
| 619 | }, | 
|---|
| 620 | [NLMPROC_TEST_RES] = { | 
|---|
| 621 | .pc_func = nlm4svc_proc_null, | 
|---|
| 622 | .pc_decode = nlm4svc_decode_void, | 
|---|
| 623 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 624 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 625 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 626 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 627 | .pc_xdrressize = St, | 
|---|
| 628 | .pc_name = "TEST_RES", | 
|---|
| 629 | }, | 
|---|
| 630 | [NLMPROC_LOCK_RES] = { | 
|---|
| 631 | .pc_func = nlm4svc_proc_null, | 
|---|
| 632 | .pc_decode = nlm4svc_decode_void, | 
|---|
| 633 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 634 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 635 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 636 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 637 | .pc_xdrressize = St, | 
|---|
| 638 | .pc_name = "LOCK_RES", | 
|---|
| 639 | }, | 
|---|
| 640 | [NLMPROC_CANCEL_RES] = { | 
|---|
| 641 | .pc_func = nlm4svc_proc_null, | 
|---|
| 642 | .pc_decode = nlm4svc_decode_void, | 
|---|
| 643 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 644 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 645 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 646 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 647 | .pc_xdrressize = St, | 
|---|
| 648 | .pc_name = "CANCEL_RES", | 
|---|
| 649 | }, | 
|---|
| 650 | [NLMPROC_UNLOCK_RES] = { | 
|---|
| 651 | .pc_func = nlm4svc_proc_null, | 
|---|
| 652 | .pc_decode = nlm4svc_decode_void, | 
|---|
| 653 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 654 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 655 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 656 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 657 | .pc_xdrressize = St, | 
|---|
| 658 | .pc_name = "UNLOCK_RES", | 
|---|
| 659 | }, | 
|---|
| 660 | [NLMPROC_GRANTED_RES] = { | 
|---|
| 661 | .pc_func = nlm4svc_proc_granted_res, | 
|---|
| 662 | .pc_decode = nlm4svc_decode_res, | 
|---|
| 663 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 664 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 665 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 666 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 667 | .pc_xdrressize = St, | 
|---|
| 668 | .pc_name = "GRANTED_RES", | 
|---|
| 669 | }, | 
|---|
| 670 | [NLMPROC_NSM_NOTIFY] = { | 
|---|
| 671 | .pc_func = nlm4svc_proc_sm_notify, | 
|---|
| 672 | .pc_decode = nlm4svc_decode_reboot, | 
|---|
| 673 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 674 | .pc_argsize = sizeof(struct nlm_reboot), | 
|---|
| 675 | .pc_argzero = sizeof(struct nlm_reboot), | 
|---|
| 676 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 677 | .pc_xdrressize = St, | 
|---|
| 678 | .pc_name = "SM_NOTIFY", | 
|---|
| 679 | }, | 
|---|
| 680 | [17] = { | 
|---|
| 681 | .pc_func = nlm4svc_proc_unused, | 
|---|
| 682 | .pc_decode = nlm4svc_decode_void, | 
|---|
| 683 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 684 | .pc_argsize = sizeof(struct nlm_void), | 
|---|
| 685 | .pc_argzero = sizeof(struct nlm_void), | 
|---|
| 686 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 687 | .pc_xdrressize = 0, | 
|---|
| 688 | .pc_name = "UNUSED", | 
|---|
| 689 | }, | 
|---|
| 690 | [18] = { | 
|---|
| 691 | .pc_func = nlm4svc_proc_unused, | 
|---|
| 692 | .pc_decode = nlm4svc_decode_void, | 
|---|
| 693 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 694 | .pc_argsize = sizeof(struct nlm_void), | 
|---|
| 695 | .pc_argzero = sizeof(struct nlm_void), | 
|---|
| 696 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 697 | .pc_xdrressize = 0, | 
|---|
| 698 | .pc_name = "UNUSED", | 
|---|
| 699 | }, | 
|---|
| 700 | [19] = { | 
|---|
| 701 | .pc_func = nlm4svc_proc_unused, | 
|---|
| 702 | .pc_decode = nlm4svc_decode_void, | 
|---|
| 703 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 704 | .pc_argsize = sizeof(struct nlm_void), | 
|---|
| 705 | .pc_argzero = sizeof(struct nlm_void), | 
|---|
| 706 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 707 | .pc_xdrressize = 0, | 
|---|
| 708 | .pc_name = "UNUSED", | 
|---|
| 709 | }, | 
|---|
| 710 | [NLMPROC_SHARE] = { | 
|---|
| 711 | .pc_func = nlm4svc_proc_share, | 
|---|
| 712 | .pc_decode = nlm4svc_decode_shareargs, | 
|---|
| 713 | .pc_encode = nlm4svc_encode_shareres, | 
|---|
| 714 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 715 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 716 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 717 | .pc_xdrressize = Ck+St+1, | 
|---|
| 718 | .pc_name = "SHARE", | 
|---|
| 719 | }, | 
|---|
| 720 | [NLMPROC_UNSHARE] = { | 
|---|
| 721 | .pc_func = nlm4svc_proc_unshare, | 
|---|
| 722 | .pc_decode = nlm4svc_decode_shareargs, | 
|---|
| 723 | .pc_encode = nlm4svc_encode_shareres, | 
|---|
| 724 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 725 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 726 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 727 | .pc_xdrressize = Ck+St+1, | 
|---|
| 728 | .pc_name = "UNSHARE", | 
|---|
| 729 | }, | 
|---|
| 730 | [NLMPROC_NM_LOCK] = { | 
|---|
| 731 | .pc_func = nlm4svc_proc_nm_lock, | 
|---|
| 732 | .pc_decode = nlm4svc_decode_lockargs, | 
|---|
| 733 | .pc_encode = nlm4svc_encode_res, | 
|---|
| 734 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 735 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 736 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 737 | .pc_xdrressize = Ck+St, | 
|---|
| 738 | .pc_name = "NM_LOCK", | 
|---|
| 739 | }, | 
|---|
| 740 | [NLMPROC_FREE_ALL] = { | 
|---|
| 741 | .pc_func = nlm4svc_proc_free_all, | 
|---|
| 742 | .pc_decode = nlm4svc_decode_notify, | 
|---|
| 743 | .pc_encode = nlm4svc_encode_void, | 
|---|
| 744 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 745 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 746 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 747 | .pc_xdrressize = St, | 
|---|
| 748 | .pc_name = "FREE_ALL", | 
|---|
| 749 | }, | 
|---|
| 750 | }; | 
|---|
| 751 |  | 
|---|