| 1 | // SPDX-License-Identifier: GPL-2.0 | 
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| 2 | /* | 
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| 3 | * linux/fs/lockd/svcproc.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 | #ifdef CONFIG_LOCKD_V4 | 
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| 20 | static __be32 | 
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| 21 | cast_to_nlm(__be32 status, u32 vers) | 
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| 22 | { | 
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| 23 | /* Note: status is assumed to be in network byte order !!! */ | 
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| 24 | if (vers != 4){ | 
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| 25 | switch (status) { | 
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| 26 | case nlm_granted: | 
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| 27 | case nlm_lck_denied: | 
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| 28 | case nlm_lck_denied_nolocks: | 
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| 29 | case nlm_lck_blocked: | 
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| 30 | case nlm_lck_denied_grace_period: | 
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| 31 | case nlm_drop_reply: | 
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| 32 | break; | 
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| 33 | case nlm4_deadlock: | 
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| 34 | status = nlm_lck_denied; | 
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| 35 | break; | 
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| 36 | default: | 
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| 37 | status = nlm_lck_denied_nolocks; | 
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| 38 | } | 
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| 39 | } | 
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| 40 |  | 
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| 41 | return (status); | 
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| 42 | } | 
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| 43 | #define	cast_status(status) (cast_to_nlm(status, rqstp->rq_vers)) | 
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| 44 | #else | 
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| 45 | #define cast_status(status) (status) | 
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| 46 | #endif | 
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| 47 |  | 
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| 48 | /* | 
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| 49 | * Obtain client and file from arguments | 
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| 50 | */ | 
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| 51 | static __be32 | 
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| 52 | nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp, | 
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| 53 | struct nlm_host **hostp, struct nlm_file **filp) | 
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| 54 | { | 
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| 55 | struct nlm_host		*host = NULL; | 
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| 56 | struct nlm_file		*file = NULL; | 
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| 57 | struct nlm_lock		*lock = &argp->lock; | 
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| 58 | int			mode; | 
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| 59 | __be32			error = 0; | 
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| 60 |  | 
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| 61 | /* nfsd callbacks must have been installed for this procedure */ | 
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| 62 | if (!nlmsvc_ops) | 
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| 63 | return nlm_lck_denied_nolocks; | 
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| 64 |  | 
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| 65 | /* Obtain host handle */ | 
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| 66 | if (!(host = nlmsvc_lookup_host(rqstp, hostname: lock->caller, hostname_len: lock->len)) | 
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| 67 | || (argp->monitor && nsm_monitor(host) < 0)) | 
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| 68 | goto no_locks; | 
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| 69 | *hostp = host; | 
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| 70 |  | 
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| 71 | /* Obtain file pointer. Not used by FREE_ALL call. */ | 
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| 72 | if (filp != NULL) { | 
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| 73 | error = cast_status(nlm_lookup_file(rqstp, &file, lock)); | 
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| 74 | if (error != 0) | 
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| 75 | goto no_locks; | 
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| 76 | *filp = file; | 
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| 77 |  | 
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| 78 | /* Set up the missing parts of the file_lock structure */ | 
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| 79 | mode = lock_to_openmode(&lock->fl); | 
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| 80 | lock->fl.c.flc_flags = FL_POSIX; | 
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| 81 | lock->fl.c.flc_file  = file->f_file[mode]; | 
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| 82 | lock->fl.c.flc_pid = current->tgid; | 
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| 83 | lock->fl.fl_lmops = &nlmsvc_lock_operations; | 
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| 84 | nlmsvc_locks_init_private(&lock->fl, host, (pid_t)lock->svid); | 
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| 85 | if (!lock->fl.c.flc_owner) { | 
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| 86 | /* lockowner allocation has failed */ | 
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| 87 | nlmsvc_release_host(host); | 
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| 88 | return nlm_lck_denied_nolocks; | 
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| 89 | } | 
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| 90 | } | 
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| 91 |  | 
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| 92 | return 0; | 
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| 93 |  | 
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| 94 | no_locks: | 
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| 95 | nlmsvc_release_host(host); | 
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| 96 | if (error) | 
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| 97 | return error; | 
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| 98 | return nlm_lck_denied_nolocks; | 
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| 99 | } | 
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| 100 |  | 
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| 101 | /* | 
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| 102 | * NULL: Test for presence of service | 
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| 103 | */ | 
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| 104 | static __be32 | 
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| 105 | nlmsvc_proc_null(struct svc_rqst *rqstp) | 
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| 106 | { | 
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| 107 | dprintk( "lockd: NULL          called\n"); | 
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| 108 | return rpc_success; | 
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| 109 | } | 
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| 110 |  | 
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| 111 | /* | 
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| 112 | * TEST: Check for conflicting lock | 
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| 113 | */ | 
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| 114 | static __be32 | 
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| 115 | __nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 116 | { | 
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| 117 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 118 | struct nlm_host	*host; | 
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| 119 | struct nlm_file	*file; | 
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| 120 | struct nlm_lockowner *test_owner; | 
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| 121 | __be32 rc = rpc_success; | 
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| 122 |  | 
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| 123 | dprintk( "lockd: TEST          called\n"); | 
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| 124 | resp->cookie = argp->cookie; | 
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| 125 |  | 
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| 126 | /* Obtain client and file */ | 
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| 127 | if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 128 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 129 |  | 
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| 130 | test_owner = argp->lock.fl.c.flc_owner; | 
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| 131 |  | 
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| 132 | /* Now check for conflicting locks */ | 
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| 133 | resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, | 
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| 134 | &argp->lock, &resp->lock)); | 
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| 135 | if (resp->status == nlm_drop_reply) | 
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| 136 | rc = rpc_drop_reply; | 
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| 137 | else | 
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| 138 | dprintk( "lockd: TEST          status %d vers %d\n", | 
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| 139 | ntohl(resp->status), rqstp->rq_vers); | 
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| 140 |  | 
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| 141 | nlmsvc_put_lockowner(test_owner); | 
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| 142 | nlmsvc_release_host(host); | 
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| 143 | nlm_release_file(file); | 
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| 144 | return rc; | 
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| 145 | } | 
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| 146 |  | 
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| 147 | static __be32 | 
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| 148 | nlmsvc_proc_test(struct svc_rqst *rqstp) | 
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| 149 | { | 
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| 150 | return __nlmsvc_proc_test(rqstp, resp: rqstp->rq_resp); | 
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| 151 | } | 
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| 152 |  | 
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| 153 | static __be32 | 
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| 154 | __nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 155 | { | 
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| 156 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 157 | struct nlm_host	*host; | 
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| 158 | struct nlm_file	*file; | 
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| 159 | __be32 rc = rpc_success; | 
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| 160 |  | 
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| 161 | dprintk( "lockd: LOCK          called\n"); | 
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| 162 |  | 
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| 163 | resp->cookie = argp->cookie; | 
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| 164 |  | 
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| 165 | /* Obtain client and file */ | 
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| 166 | if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 167 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 168 |  | 
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| 169 | /* Now try to lock the file */ | 
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| 170 | resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock, | 
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| 171 | argp->block, &argp->cookie, | 
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| 172 | argp->reclaim)); | 
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| 173 | if (resp->status == nlm_drop_reply) | 
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| 174 | rc = rpc_drop_reply; | 
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| 175 | else | 
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| 176 | dprintk( "lockd: LOCK         status %d\n", ntohl(resp->status)); | 
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| 177 |  | 
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| 178 | nlmsvc_release_lockowner(&argp->lock); | 
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| 179 | nlmsvc_release_host(host); | 
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| 180 | nlm_release_file(file); | 
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| 181 | return rc; | 
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| 182 | } | 
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| 183 |  | 
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| 184 | static __be32 | 
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| 185 | nlmsvc_proc_lock(struct svc_rqst *rqstp) | 
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| 186 | { | 
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| 187 | return __nlmsvc_proc_lock(rqstp, resp: rqstp->rq_resp); | 
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| 188 | } | 
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| 189 |  | 
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| 190 | static __be32 | 
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| 191 | __nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 192 | { | 
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| 193 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 194 | struct nlm_host	*host; | 
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| 195 | struct nlm_file	*file; | 
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| 196 | struct net *net = SVC_NET(rqstp); | 
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| 197 |  | 
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| 198 | dprintk( "lockd: CANCEL        called\n"); | 
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| 199 |  | 
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| 200 | resp->cookie = argp->cookie; | 
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| 201 |  | 
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| 202 | /* Don't accept requests during grace period */ | 
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| 203 | if (locks_in_grace(net)) { | 
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| 204 | resp->status = nlm_lck_denied_grace_period; | 
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| 205 | return rpc_success; | 
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| 206 | } | 
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| 207 |  | 
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| 208 | /* Obtain client and file */ | 
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| 209 | if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 210 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 211 |  | 
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| 212 | /* Try to cancel request. */ | 
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| 213 | resp->status = cast_status(nlmsvc_cancel_blocked(net, file, &argp->lock)); | 
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| 214 |  | 
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| 215 | dprintk( "lockd: CANCEL        status %d\n", ntohl(resp->status)); | 
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| 216 | nlmsvc_release_lockowner(&argp->lock); | 
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| 217 | nlmsvc_release_host(host); | 
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| 218 | nlm_release_file(file); | 
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| 219 | return rpc_success; | 
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| 220 | } | 
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| 221 |  | 
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| 222 | static __be32 | 
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| 223 | nlmsvc_proc_cancel(struct svc_rqst *rqstp) | 
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| 224 | { | 
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| 225 | return __nlmsvc_proc_cancel(rqstp, resp: rqstp->rq_resp); | 
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| 226 | } | 
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| 227 |  | 
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| 228 | /* | 
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| 229 | * UNLOCK: release a lock | 
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| 230 | */ | 
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| 231 | static __be32 | 
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| 232 | __nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 233 | { | 
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| 234 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 235 | struct nlm_host	*host; | 
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| 236 | struct nlm_file	*file; | 
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| 237 | struct net *net = SVC_NET(rqstp); | 
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| 238 |  | 
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| 239 | dprintk( "lockd: UNLOCK        called\n"); | 
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| 240 |  | 
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| 241 | resp->cookie = argp->cookie; | 
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| 242 |  | 
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| 243 | /* Don't accept new lock requests during grace period */ | 
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| 244 | if (locks_in_grace(net)) { | 
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| 245 | resp->status = nlm_lck_denied_grace_period; | 
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| 246 | return rpc_success; | 
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| 247 | } | 
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| 248 |  | 
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| 249 | /* Obtain client and file */ | 
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| 250 | if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 251 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 252 |  | 
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| 253 | /* Now try to remove the lock */ | 
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| 254 | resp->status = cast_status(nlmsvc_unlock(net, file, &argp->lock)); | 
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| 255 |  | 
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| 256 | dprintk( "lockd: UNLOCK        status %d\n", ntohl(resp->status)); | 
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| 257 | nlmsvc_release_lockowner(&argp->lock); | 
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| 258 | nlmsvc_release_host(host); | 
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| 259 | nlm_release_file(file); | 
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| 260 | return rpc_success; | 
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| 261 | } | 
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| 262 |  | 
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| 263 | static __be32 | 
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| 264 | nlmsvc_proc_unlock(struct svc_rqst *rqstp) | 
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| 265 | { | 
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| 266 | return __nlmsvc_proc_unlock(rqstp, resp: rqstp->rq_resp); | 
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| 267 | } | 
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| 268 |  | 
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| 269 | /* | 
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| 270 | * GRANTED: A server calls us to tell that a process' lock request | 
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| 271 | * was granted | 
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| 272 | */ | 
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| 273 | static __be32 | 
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| 274 | __nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_res *resp) | 
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| 275 | { | 
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| 276 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 277 |  | 
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| 278 | resp->cookie = argp->cookie; | 
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| 279 |  | 
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| 280 | dprintk( "lockd: GRANTED       called\n"); | 
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| 281 | resp->status = nlmclnt_grant(addr: svc_addr(rqst: rqstp), lock: &argp->lock); | 
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| 282 | dprintk( "lockd: GRANTED       status %d\n", ntohl(resp->status)); | 
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| 283 | return rpc_success; | 
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| 284 | } | 
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| 285 |  | 
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| 286 | static __be32 | 
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| 287 | nlmsvc_proc_granted(struct svc_rqst *rqstp) | 
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| 288 | { | 
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| 289 | return __nlmsvc_proc_granted(rqstp, resp: rqstp->rq_resp); | 
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| 290 | } | 
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| 291 |  | 
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| 292 | /* | 
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| 293 | * This is the generic lockd callback for async RPC calls | 
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| 294 | */ | 
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| 295 | static void nlmsvc_callback_exit(struct rpc_task *task, void *data) | 
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| 296 | { | 
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| 297 | } | 
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| 298 |  | 
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| 299 | void nlmsvc_release_call(struct nlm_rqst *call) | 
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| 300 | { | 
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| 301 | if (!refcount_dec_and_test(r: &call->a_count)) | 
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| 302 | return; | 
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| 303 | nlmsvc_release_host(call->a_host); | 
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| 304 | kfree(objp: call); | 
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| 305 | } | 
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| 306 |  | 
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| 307 | static void nlmsvc_callback_release(void *data) | 
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| 308 | { | 
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| 309 | nlmsvc_release_call(call: data); | 
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| 310 | } | 
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| 311 |  | 
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| 312 | static const struct rpc_call_ops nlmsvc_callback_ops = { | 
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| 313 | .rpc_call_done = nlmsvc_callback_exit, | 
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| 314 | .rpc_release = nlmsvc_callback_release, | 
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| 315 | }; | 
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| 316 |  | 
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| 317 | /* | 
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| 318 | * `Async' versions of the above service routines. They aren't really, | 
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| 319 | * because we send the callback before the reply proper. I hope this | 
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| 320 | * doesn't break any clients. | 
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| 321 | */ | 
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| 322 | static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc, | 
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| 323 | __be32 (*func)(struct svc_rqst *, struct nlm_res *)) | 
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| 324 | { | 
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| 325 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 326 | struct nlm_host	*host; | 
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| 327 | struct nlm_rqst	*call; | 
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| 328 | __be32 stat; | 
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| 329 |  | 
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| 330 | host = nlmsvc_lookup_host(rqstp, | 
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| 331 | hostname: argp->lock.caller, | 
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| 332 | hostname_len: argp->lock.len); | 
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| 333 | if (host == NULL) | 
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| 334 | return rpc_system_err; | 
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| 335 |  | 
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| 336 | call = nlm_alloc_call(host); | 
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| 337 | nlmsvc_release_host(host); | 
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| 338 | if (call == NULL) | 
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| 339 | return rpc_system_err; | 
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| 340 |  | 
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| 341 | stat = func(rqstp, &call->a_res); | 
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| 342 | if (stat != 0) { | 
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| 343 | nlmsvc_release_call(call); | 
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| 344 | return stat; | 
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| 345 | } | 
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| 346 |  | 
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| 347 | call->a_flags = RPC_TASK_ASYNC; | 
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| 348 | if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0) | 
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| 349 | return rpc_system_err; | 
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| 350 | return rpc_success; | 
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| 351 | } | 
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| 352 |  | 
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| 353 | static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp) | 
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| 354 | { | 
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| 355 | dprintk( "lockd: TEST_MSG      called\n"); | 
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| 356 | return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, func: __nlmsvc_proc_test); | 
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| 357 | } | 
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| 358 |  | 
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| 359 | static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp) | 
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| 360 | { | 
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| 361 | dprintk( "lockd: LOCK_MSG      called\n"); | 
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| 362 | return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, func: __nlmsvc_proc_lock); | 
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| 363 | } | 
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| 364 |  | 
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| 365 | static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp) | 
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| 366 | { | 
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| 367 | dprintk( "lockd: CANCEL_MSG    called\n"); | 
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| 368 | return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, func: __nlmsvc_proc_cancel); | 
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| 369 | } | 
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| 370 |  | 
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| 371 | static __be32 | 
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| 372 | nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp) | 
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| 373 | { | 
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| 374 | dprintk( "lockd: UNLOCK_MSG    called\n"); | 
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| 375 | return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, func: __nlmsvc_proc_unlock); | 
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| 376 | } | 
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| 377 |  | 
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| 378 | static __be32 | 
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| 379 | nlmsvc_proc_granted_msg(struct svc_rqst *rqstp) | 
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| 380 | { | 
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| 381 | dprintk( "lockd: GRANTED_MSG   called\n"); | 
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| 382 | return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, func: __nlmsvc_proc_granted); | 
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| 383 | } | 
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| 384 |  | 
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| 385 | /* | 
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| 386 | * SHARE: create a DOS share or alter existing share. | 
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| 387 | */ | 
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| 388 | static __be32 | 
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| 389 | nlmsvc_proc_share(struct svc_rqst *rqstp) | 
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| 390 | { | 
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| 391 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 392 | struct nlm_res *resp = rqstp->rq_resp; | 
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| 393 | struct nlm_host	*host; | 
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| 394 | struct nlm_file	*file; | 
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| 395 |  | 
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| 396 | dprintk( "lockd: SHARE         called\n"); | 
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| 397 |  | 
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| 398 | resp->cookie = argp->cookie; | 
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| 399 |  | 
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| 400 | /* Don't accept new lock requests during grace period */ | 
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| 401 | if (locks_in_grace(SVC_NET(rqstp)) && !argp->reclaim) { | 
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| 402 | resp->status = nlm_lck_denied_grace_period; | 
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| 403 | return rpc_success; | 
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| 404 | } | 
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| 405 |  | 
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| 406 | /* Obtain client and file */ | 
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| 407 | if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 408 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 409 |  | 
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| 410 | /* Now try to create the share */ | 
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| 411 | resp->status = cast_status(nlmsvc_share_file(host, file, argp)); | 
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| 412 |  | 
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| 413 | dprintk( "lockd: SHARE         status %d\n", ntohl(resp->status)); | 
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| 414 | nlmsvc_release_lockowner(&argp->lock); | 
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| 415 | nlmsvc_release_host(host); | 
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| 416 | nlm_release_file(file); | 
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| 417 | return rpc_success; | 
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| 418 | } | 
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| 419 |  | 
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| 420 | /* | 
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| 421 | * UNSHARE: Release a DOS share. | 
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| 422 | */ | 
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| 423 | static __be32 | 
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| 424 | nlmsvc_proc_unshare(struct svc_rqst *rqstp) | 
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| 425 | { | 
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| 426 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 427 | struct nlm_res *resp = rqstp->rq_resp; | 
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| 428 | struct nlm_host	*host; | 
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| 429 | struct nlm_file	*file; | 
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| 430 |  | 
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| 431 | dprintk( "lockd: UNSHARE       called\n"); | 
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| 432 |  | 
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| 433 | resp->cookie = argp->cookie; | 
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| 434 |  | 
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| 435 | /* Don't accept requests during grace period */ | 
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| 436 | if (locks_in_grace(SVC_NET(rqstp))) { | 
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| 437 | resp->status = nlm_lck_denied_grace_period; | 
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| 438 | return rpc_success; | 
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| 439 | } | 
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| 440 |  | 
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| 441 | /* Obtain client and file */ | 
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| 442 | if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, hostp: &host, filp: &file))) | 
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| 443 | return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success; | 
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| 444 |  | 
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| 445 | /* Now try to unshare the file */ | 
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| 446 | resp->status = cast_status(nlmsvc_unshare_file(host, file, argp)); | 
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| 447 |  | 
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| 448 | dprintk( "lockd: UNSHARE       status %d\n", ntohl(resp->status)); | 
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| 449 | nlmsvc_release_lockowner(&argp->lock); | 
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| 450 | nlmsvc_release_host(host); | 
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| 451 | nlm_release_file(file); | 
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| 452 | return rpc_success; | 
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| 453 | } | 
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| 454 |  | 
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| 455 | /* | 
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| 456 | * NM_LOCK: Create an unmonitored lock | 
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| 457 | */ | 
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| 458 | static __be32 | 
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| 459 | nlmsvc_proc_nm_lock(struct svc_rqst *rqstp) | 
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| 460 | { | 
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| 461 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 462 |  | 
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| 463 | dprintk( "lockd: NM_LOCK       called\n"); | 
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| 464 |  | 
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| 465 | argp->monitor = 0;		/* just clean the monitor flag */ | 
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| 466 | return nlmsvc_proc_lock(rqstp); | 
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| 467 | } | 
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| 468 |  | 
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| 469 | /* | 
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| 470 | * FREE_ALL: Release all locks and shares held by client | 
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| 471 | */ | 
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| 472 | static __be32 | 
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| 473 | nlmsvc_proc_free_all(struct svc_rqst *rqstp) | 
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| 474 | { | 
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| 475 | struct nlm_args *argp = rqstp->rq_argp; | 
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| 476 | struct nlm_host	*host; | 
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| 477 |  | 
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| 478 | /* Obtain client */ | 
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| 479 | if (nlmsvc_retrieve_args(rqstp, argp, hostp: &host, NULL)) | 
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| 480 | return rpc_success; | 
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| 481 |  | 
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| 482 | nlmsvc_free_host_resources(host); | 
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| 483 | nlmsvc_release_host(host); | 
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| 484 | return rpc_success; | 
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| 485 | } | 
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| 486 |  | 
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| 487 | /* | 
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| 488 | * SM_NOTIFY: private callback from statd (not part of official NLM proto) | 
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| 489 | */ | 
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| 490 | static __be32 | 
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| 491 | nlmsvc_proc_sm_notify(struct svc_rqst *rqstp) | 
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| 492 | { | 
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| 493 | struct nlm_reboot *argp = rqstp->rq_argp; | 
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| 494 |  | 
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| 495 | dprintk( "lockd: SM_NOTIFY     called\n"); | 
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| 496 |  | 
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| 497 | if (!nlm_privileged_requester(rqstp)) { | 
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| 498 | char buf[RPC_MAX_ADDRBUFLEN]; | 
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| 499 | printk(KERN_WARNING "lockd: rejected NSM callback from %s\n", | 
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| 500 | svc_print_addr(rqstp, buf, sizeof(buf))); | 
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| 501 | return rpc_system_err; | 
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| 502 | } | 
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| 503 |  | 
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| 504 | nlm_host_rebooted(SVC_NET(rqstp), argp); | 
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| 505 | return rpc_success; | 
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| 506 | } | 
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| 507 |  | 
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| 508 | /* | 
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| 509 | * client sent a GRANTED_RES, let's remove the associated block | 
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| 510 | */ | 
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| 511 | static __be32 | 
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| 512 | nlmsvc_proc_granted_res(struct svc_rqst *rqstp) | 
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| 513 | { | 
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| 514 | struct nlm_res *argp = rqstp->rq_argp; | 
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| 515 |  | 
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| 516 | if (!nlmsvc_ops) | 
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| 517 | return rpc_success; | 
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| 518 |  | 
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| 519 | dprintk( "lockd: GRANTED_RES   called\n"); | 
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| 520 |  | 
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| 521 | nlmsvc_grant_reply(&argp->cookie, argp->status); | 
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| 522 | return rpc_success; | 
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| 523 | } | 
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| 524 |  | 
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| 525 | static __be32 | 
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| 526 | nlmsvc_proc_unused(struct svc_rqst *rqstp) | 
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| 527 | { | 
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| 528 | return rpc_proc_unavail; | 
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| 529 | } | 
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| 530 |  | 
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| 531 | /* | 
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| 532 | * NLM Server procedures. | 
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| 533 | */ | 
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| 534 |  | 
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| 535 | struct nlm_void			{ int dummy; }; | 
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| 536 |  | 
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| 537 | #define	Ck	(1+XDR_QUADLEN(NLM_MAXCOOKIELEN))	/* cookie */ | 
|---|
| 538 | #define	St	1				/* status */ | 
|---|
| 539 | #define	No	(1+1024/4)			/* Net Obj */ | 
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| 540 | #define	Rg	2				/* range - offset + size */ | 
|---|
| 541 |  | 
|---|
| 542 | const struct svc_procedure nlmsvc_procedures[24] = { | 
|---|
| 543 | [NLMPROC_NULL] = { | 
|---|
| 544 | .pc_func = nlmsvc_proc_null, | 
|---|
| 545 | .pc_decode = nlmsvc_decode_void, | 
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| 546 | .pc_encode = nlmsvc_encode_void, | 
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| 547 | .pc_argsize = sizeof(struct nlm_void), | 
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| 548 | .pc_argzero = sizeof(struct nlm_void), | 
|---|
| 549 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 550 | .pc_xdrressize = St, | 
|---|
| 551 | .pc_name = "NULL", | 
|---|
| 552 | }, | 
|---|
| 553 | [NLMPROC_TEST] = { | 
|---|
| 554 | .pc_func = nlmsvc_proc_test, | 
|---|
| 555 | .pc_decode = nlmsvc_decode_testargs, | 
|---|
| 556 | .pc_encode = nlmsvc_encode_testres, | 
|---|
| 557 | .pc_argsize = sizeof(struct nlm_args), | 
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| 558 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 559 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 560 | .pc_xdrressize = Ck+St+2+No+Rg, | 
|---|
| 561 | .pc_name = "TEST", | 
|---|
| 562 | }, | 
|---|
| 563 | [NLMPROC_LOCK] = { | 
|---|
| 564 | .pc_func = nlmsvc_proc_lock, | 
|---|
| 565 | .pc_decode = nlmsvc_decode_lockargs, | 
|---|
| 566 | .pc_encode = nlmsvc_encode_res, | 
|---|
| 567 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 568 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 569 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 570 | .pc_xdrressize = Ck+St, | 
|---|
| 571 | .pc_name = "LOCK", | 
|---|
| 572 | }, | 
|---|
| 573 | [NLMPROC_CANCEL] = { | 
|---|
| 574 | .pc_func = nlmsvc_proc_cancel, | 
|---|
| 575 | .pc_decode = nlmsvc_decode_cancargs, | 
|---|
| 576 | .pc_encode = nlmsvc_encode_res, | 
|---|
| 577 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 578 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 579 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 580 | .pc_xdrressize = Ck+St, | 
|---|
| 581 | .pc_name = "CANCEL", | 
|---|
| 582 | }, | 
|---|
| 583 | [NLMPROC_UNLOCK] = { | 
|---|
| 584 | .pc_func = nlmsvc_proc_unlock, | 
|---|
| 585 | .pc_decode = nlmsvc_decode_unlockargs, | 
|---|
| 586 | .pc_encode = nlmsvc_encode_res, | 
|---|
| 587 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 588 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 589 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 590 | .pc_xdrressize = Ck+St, | 
|---|
| 591 | .pc_name = "UNLOCK", | 
|---|
| 592 | }, | 
|---|
| 593 | [NLMPROC_GRANTED] = { | 
|---|
| 594 | .pc_func = nlmsvc_proc_granted, | 
|---|
| 595 | .pc_decode = nlmsvc_decode_testargs, | 
|---|
| 596 | .pc_encode = nlmsvc_encode_res, | 
|---|
| 597 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 598 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 599 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 600 | .pc_xdrressize = Ck+St, | 
|---|
| 601 | .pc_name = "GRANTED", | 
|---|
| 602 | }, | 
|---|
| 603 | [NLMPROC_TEST_MSG] = { | 
|---|
| 604 | .pc_func = nlmsvc_proc_test_msg, | 
|---|
| 605 | .pc_decode = nlmsvc_decode_testargs, | 
|---|
| 606 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 607 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 608 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 609 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 610 | .pc_xdrressize = St, | 
|---|
| 611 | .pc_name = "TEST_MSG", | 
|---|
| 612 | }, | 
|---|
| 613 | [NLMPROC_LOCK_MSG] = { | 
|---|
| 614 | .pc_func = nlmsvc_proc_lock_msg, | 
|---|
| 615 | .pc_decode = nlmsvc_decode_lockargs, | 
|---|
| 616 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 617 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 618 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 619 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 620 | .pc_xdrressize = St, | 
|---|
| 621 | .pc_name = "LOCK_MSG", | 
|---|
| 622 | }, | 
|---|
| 623 | [NLMPROC_CANCEL_MSG] = { | 
|---|
| 624 | .pc_func = nlmsvc_proc_cancel_msg, | 
|---|
| 625 | .pc_decode = nlmsvc_decode_cancargs, | 
|---|
| 626 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 627 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 628 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 629 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 630 | .pc_xdrressize = St, | 
|---|
| 631 | .pc_name = "CANCEL_MSG", | 
|---|
| 632 | }, | 
|---|
| 633 | [NLMPROC_UNLOCK_MSG] = { | 
|---|
| 634 | .pc_func = nlmsvc_proc_unlock_msg, | 
|---|
| 635 | .pc_decode = nlmsvc_decode_unlockargs, | 
|---|
| 636 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 637 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 638 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 639 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 640 | .pc_xdrressize = St, | 
|---|
| 641 | .pc_name = "UNLOCK_MSG", | 
|---|
| 642 | }, | 
|---|
| 643 | [NLMPROC_GRANTED_MSG] = { | 
|---|
| 644 | .pc_func = nlmsvc_proc_granted_msg, | 
|---|
| 645 | .pc_decode = nlmsvc_decode_testargs, | 
|---|
| 646 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 647 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 648 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 649 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 650 | .pc_xdrressize = St, | 
|---|
| 651 | .pc_name = "GRANTED_MSG", | 
|---|
| 652 | }, | 
|---|
| 653 | [NLMPROC_TEST_RES] = { | 
|---|
| 654 | .pc_func = nlmsvc_proc_null, | 
|---|
| 655 | .pc_decode = nlmsvc_decode_void, | 
|---|
| 656 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 657 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 658 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 659 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 660 | .pc_xdrressize = St, | 
|---|
| 661 | .pc_name = "TEST_RES", | 
|---|
| 662 | }, | 
|---|
| 663 | [NLMPROC_LOCK_RES] = { | 
|---|
| 664 | .pc_func = nlmsvc_proc_null, | 
|---|
| 665 | .pc_decode = nlmsvc_decode_void, | 
|---|
| 666 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 667 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 668 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 669 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 670 | .pc_xdrressize = St, | 
|---|
| 671 | .pc_name = "LOCK_RES", | 
|---|
| 672 | }, | 
|---|
| 673 | [NLMPROC_CANCEL_RES] = { | 
|---|
| 674 | .pc_func = nlmsvc_proc_null, | 
|---|
| 675 | .pc_decode = nlmsvc_decode_void, | 
|---|
| 676 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 677 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 678 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 679 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 680 | .pc_xdrressize = St, | 
|---|
| 681 | .pc_name = "CANCEL_RES", | 
|---|
| 682 | }, | 
|---|
| 683 | [NLMPROC_UNLOCK_RES] = { | 
|---|
| 684 | .pc_func = nlmsvc_proc_null, | 
|---|
| 685 | .pc_decode = nlmsvc_decode_void, | 
|---|
| 686 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 687 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 688 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 689 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 690 | .pc_xdrressize = St, | 
|---|
| 691 | .pc_name = "UNLOCK_RES", | 
|---|
| 692 | }, | 
|---|
| 693 | [NLMPROC_GRANTED_RES] = { | 
|---|
| 694 | .pc_func = nlmsvc_proc_granted_res, | 
|---|
| 695 | .pc_decode = nlmsvc_decode_res, | 
|---|
| 696 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 697 | .pc_argsize = sizeof(struct nlm_res), | 
|---|
| 698 | .pc_argzero = sizeof(struct nlm_res), | 
|---|
| 699 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 700 | .pc_xdrressize = St, | 
|---|
| 701 | .pc_name = "GRANTED_RES", | 
|---|
| 702 | }, | 
|---|
| 703 | [NLMPROC_NSM_NOTIFY] = { | 
|---|
| 704 | .pc_func = nlmsvc_proc_sm_notify, | 
|---|
| 705 | .pc_decode = nlmsvc_decode_reboot, | 
|---|
| 706 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 707 | .pc_argsize = sizeof(struct nlm_reboot), | 
|---|
| 708 | .pc_argzero = sizeof(struct nlm_reboot), | 
|---|
| 709 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 710 | .pc_xdrressize = St, | 
|---|
| 711 | .pc_name = "SM_NOTIFY", | 
|---|
| 712 | }, | 
|---|
| 713 | [17] = { | 
|---|
| 714 | .pc_func = nlmsvc_proc_unused, | 
|---|
| 715 | .pc_decode = nlmsvc_decode_void, | 
|---|
| 716 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 717 | .pc_argsize = sizeof(struct nlm_void), | 
|---|
| 718 | .pc_argzero = sizeof(struct nlm_void), | 
|---|
| 719 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 720 | .pc_xdrressize = St, | 
|---|
| 721 | .pc_name = "UNUSED", | 
|---|
| 722 | }, | 
|---|
| 723 | [18] = { | 
|---|
| 724 | .pc_func = nlmsvc_proc_unused, | 
|---|
| 725 | .pc_decode = nlmsvc_decode_void, | 
|---|
| 726 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 727 | .pc_argsize = sizeof(struct nlm_void), | 
|---|
| 728 | .pc_argzero = sizeof(struct nlm_void), | 
|---|
| 729 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 730 | .pc_xdrressize = St, | 
|---|
| 731 | .pc_name = "UNUSED", | 
|---|
| 732 | }, | 
|---|
| 733 | [19] = { | 
|---|
| 734 | .pc_func = nlmsvc_proc_unused, | 
|---|
| 735 | .pc_decode = nlmsvc_decode_void, | 
|---|
| 736 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 737 | .pc_argsize = sizeof(struct nlm_void), | 
|---|
| 738 | .pc_argzero = sizeof(struct nlm_void), | 
|---|
| 739 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 740 | .pc_xdrressize = St, | 
|---|
| 741 | .pc_name = "UNUSED", | 
|---|
| 742 | }, | 
|---|
| 743 | [NLMPROC_SHARE] = { | 
|---|
| 744 | .pc_func = nlmsvc_proc_share, | 
|---|
| 745 | .pc_decode = nlmsvc_decode_shareargs, | 
|---|
| 746 | .pc_encode = nlmsvc_encode_shareres, | 
|---|
| 747 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 748 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 749 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 750 | .pc_xdrressize = Ck+St+1, | 
|---|
| 751 | .pc_name = "SHARE", | 
|---|
| 752 | }, | 
|---|
| 753 | [NLMPROC_UNSHARE] = { | 
|---|
| 754 | .pc_func = nlmsvc_proc_unshare, | 
|---|
| 755 | .pc_decode = nlmsvc_decode_shareargs, | 
|---|
| 756 | .pc_encode = nlmsvc_encode_shareres, | 
|---|
| 757 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 758 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 759 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 760 | .pc_xdrressize = Ck+St+1, | 
|---|
| 761 | .pc_name = "UNSHARE", | 
|---|
| 762 | }, | 
|---|
| 763 | [NLMPROC_NM_LOCK] = { | 
|---|
| 764 | .pc_func = nlmsvc_proc_nm_lock, | 
|---|
| 765 | .pc_decode = nlmsvc_decode_lockargs, | 
|---|
| 766 | .pc_encode = nlmsvc_encode_res, | 
|---|
| 767 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 768 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 769 | .pc_ressize = sizeof(struct nlm_res), | 
|---|
| 770 | .pc_xdrressize = Ck+St, | 
|---|
| 771 | .pc_name = "NM_LOCK", | 
|---|
| 772 | }, | 
|---|
| 773 | [NLMPROC_FREE_ALL] = { | 
|---|
| 774 | .pc_func = nlmsvc_proc_free_all, | 
|---|
| 775 | .pc_decode = nlmsvc_decode_notify, | 
|---|
| 776 | .pc_encode = nlmsvc_encode_void, | 
|---|
| 777 | .pc_argsize = sizeof(struct nlm_args), | 
|---|
| 778 | .pc_argzero = sizeof(struct nlm_args), | 
|---|
| 779 | .pc_ressize = sizeof(struct nlm_void), | 
|---|
| 780 | .pc_xdrressize = 0, | 
|---|
| 781 | .pc_name = "FREE_ALL", | 
|---|
| 782 | }, | 
|---|
| 783 | }; | 
|---|
| 784 |  | 
|---|