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-rw-r--r--ANDROID_3.4.5/fs/lockd/svcproc.c544
1 files changed, 0 insertions, 544 deletions
diff --git a/ANDROID_3.4.5/fs/lockd/svcproc.c b/ANDROID_3.4.5/fs/lockd/svcproc.c
deleted file mode 100644
index d27aab11..00000000
--- a/ANDROID_3.4.5/fs/lockd/svcproc.c
+++ /dev/null
@@ -1,544 +0,0 @@
-/*
- * linux/fs/lockd/svcproc.c
- *
- * Lockd server procedures. We don't implement the NLM_*_RES
- * procedures because we don't use the async procedures.
- *
- * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
- */
-
-#include <linux/types.h>
-#include <linux/time.h>
-#include <linux/lockd/lockd.h>
-#include <linux/lockd/share.h>
-
-#define NLMDBG_FACILITY NLMDBG_CLIENT
-
-#ifdef CONFIG_LOCKD_V4
-static __be32
-cast_to_nlm(__be32 status, u32 vers)
-{
- /* Note: status is assumed to be in network byte order !!! */
- if (vers != 4){
- switch (status) {
- case nlm_granted:
- case nlm_lck_denied:
- case nlm_lck_denied_nolocks:
- case nlm_lck_blocked:
- case nlm_lck_denied_grace_period:
- case nlm_drop_reply:
- break;
- case nlm4_deadlock:
- status = nlm_lck_denied;
- break;
- default:
- status = nlm_lck_denied_nolocks;
- }
- }
-
- return (status);
-}
-#define cast_status(status) (cast_to_nlm(status, rqstp->rq_vers))
-#else
-#define cast_status(status) (status)
-#endif
-
-/*
- * Obtain client and file from arguments
- */
-static __be32
-nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_host **hostp, struct nlm_file **filp)
-{
- struct nlm_host *host = NULL;
- struct nlm_file *file = NULL;
- struct nlm_lock *lock = &argp->lock;
- __be32 error = 0;
-
- /* nfsd callbacks must have been installed for this procedure */
- if (!nlmsvc_ops)
- return nlm_lck_denied_nolocks;
-
- /* Obtain host handle */
- if (!(host = nlmsvc_lookup_host(rqstp, lock->caller, lock->len))
- || (argp->monitor && nsm_monitor(host) < 0))
- goto no_locks;
- *hostp = host;
-
- /* Obtain file pointer. Not used by FREE_ALL call. */
- if (filp != NULL) {
- if ((error = nlm_lookup_file(rqstp, &file, &lock->fh)) != 0)
- goto no_locks;
- *filp = file;
-
- /* Set up the missing parts of the file_lock structure */
- lock->fl.fl_file = file->f_file;
- lock->fl.fl_owner = (fl_owner_t) host;
- lock->fl.fl_lmops = &nlmsvc_lock_operations;
- }
-
- return 0;
-
-no_locks:
- nlmsvc_release_host(host);
- if (error)
- return error;
- return nlm_lck_denied_nolocks;
-}
-
-/*
- * NULL: Test for presence of service
- */
-static __be32
-nlmsvc_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
-{
- dprintk("lockd: NULL called\n");
- return rpc_success;
-}
-
-/*
- * TEST: Check for conflicting lock
- */
-static __be32
-nlmsvc_proc_test(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_res *resp)
-{
- struct nlm_host *host;
- struct nlm_file *file;
- __be32 rc = rpc_success;
-
- dprintk("lockd: TEST called\n");
- resp->cookie = argp->cookie;
-
- /* Obtain client and file */
- if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
- return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
-
- /* Now check for conflicting locks */
- resp->status = cast_status(nlmsvc_testlock(rqstp, file, host, &argp->lock, &resp->lock, &resp->cookie));
- if (resp->status == nlm_drop_reply)
- rc = rpc_drop_reply;
- else
- dprintk("lockd: TEST status %d vers %d\n",
- ntohl(resp->status), rqstp->rq_vers);
-
- nlmsvc_release_host(host);
- nlm_release_file(file);
- return rc;
-}
-
-static __be32
-nlmsvc_proc_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_res *resp)
-{
- struct nlm_host *host;
- struct nlm_file *file;
- __be32 rc = rpc_success;
-
- dprintk("lockd: LOCK called\n");
-
- resp->cookie = argp->cookie;
-
- /* Obtain client and file */
- if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
- return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
-
-#if 0
- /* If supplied state doesn't match current state, we assume it's
- * an old request that time-warped somehow. Any error return would
- * do in this case because it's irrelevant anyway.
- *
- * NB: We don't retrieve the remote host's state yet.
- */
- if (host->h_nsmstate && host->h_nsmstate != argp->state) {
- resp->status = nlm_lck_denied_nolocks;
- } else
-#endif
-
- /* Now try to lock the file */
- resp->status = cast_status(nlmsvc_lock(rqstp, file, host, &argp->lock,
- argp->block, &argp->cookie,
- argp->reclaim));
- if (resp->status == nlm_drop_reply)
- rc = rpc_drop_reply;
- else
- dprintk("lockd: LOCK status %d\n", ntohl(resp->status));
-
- nlmsvc_release_host(host);
- nlm_release_file(file);
- return rc;
-}
-
-static __be32
-nlmsvc_proc_cancel(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_res *resp)
-{
- struct nlm_host *host;
- struct nlm_file *file;
-
- dprintk("lockd: CANCEL called\n");
-
- resp->cookie = argp->cookie;
-
- /* Don't accept requests during grace period */
- if (locks_in_grace()) {
- resp->status = nlm_lck_denied_grace_period;
- return rpc_success;
- }
-
- /* Obtain client and file */
- if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
- return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
-
- /* Try to cancel request. */
- resp->status = cast_status(nlmsvc_cancel_blocked(file, &argp->lock));
-
- dprintk("lockd: CANCEL status %d\n", ntohl(resp->status));
- nlmsvc_release_host(host);
- nlm_release_file(file);
- return rpc_success;
-}
-
-/*
- * UNLOCK: release a lock
- */
-static __be32
-nlmsvc_proc_unlock(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_res *resp)
-{
- struct nlm_host *host;
- struct nlm_file *file;
-
- dprintk("lockd: UNLOCK called\n");
-
- resp->cookie = argp->cookie;
-
- /* Don't accept new lock requests during grace period */
- if (locks_in_grace()) {
- resp->status = nlm_lck_denied_grace_period;
- return rpc_success;
- }
-
- /* Obtain client and file */
- if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
- return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
-
- /* Now try to remove the lock */
- resp->status = cast_status(nlmsvc_unlock(file, &argp->lock));
-
- dprintk("lockd: UNLOCK status %d\n", ntohl(resp->status));
- nlmsvc_release_host(host);
- nlm_release_file(file);
- return rpc_success;
-}
-
-/*
- * GRANTED: A server calls us to tell that a process' lock request
- * was granted
- */
-static __be32
-nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_res *resp)
-{
- resp->cookie = argp->cookie;
-
- dprintk("lockd: GRANTED called\n");
- resp->status = nlmclnt_grant(svc_addr(rqstp), &argp->lock);
- dprintk("lockd: GRANTED status %d\n", ntohl(resp->status));
- return rpc_success;
-}
-
-/*
- * This is the generic lockd callback for async RPC calls
- */
-static void nlmsvc_callback_exit(struct rpc_task *task, void *data)
-{
- dprintk("lockd: %5u callback returned %d\n", task->tk_pid,
- -task->tk_status);
-}
-
-void nlmsvc_release_call(struct nlm_rqst *call)
-{
- if (!atomic_dec_and_test(&call->a_count))
- return;
- nlmsvc_release_host(call->a_host);
- kfree(call);
-}
-
-static void nlmsvc_callback_release(void *data)
-{
- nlmsvc_release_call(data);
-}
-
-static const struct rpc_call_ops nlmsvc_callback_ops = {
- .rpc_call_done = nlmsvc_callback_exit,
- .rpc_release = nlmsvc_callback_release,
-};
-
-/*
- * `Async' versions of the above service routines. They aren't really,
- * because we send the callback before the reply proper. I hope this
- * doesn't break any clients.
- */
-static __be32 nlmsvc_callback(struct svc_rqst *rqstp, u32 proc, struct nlm_args *argp,
- __be32 (*func)(struct svc_rqst *, struct nlm_args *, struct nlm_res *))
-{
- struct nlm_host *host;
- struct nlm_rqst *call;
- __be32 stat;
-
- host = nlmsvc_lookup_host(rqstp,
- argp->lock.caller,
- argp->lock.len);
- if (host == NULL)
- return rpc_system_err;
-
- call = nlm_alloc_call(host);
- if (call == NULL)
- return rpc_system_err;
-
- stat = func(rqstp, argp, &call->a_res);
- if (stat != 0) {
- nlmsvc_release_call(call);
- return stat;
- }
-
- call->a_flags = RPC_TASK_ASYNC;
- if (nlm_async_reply(call, proc, &nlmsvc_callback_ops) < 0)
- return rpc_system_err;
- return rpc_success;
-}
-
-static __be32 nlmsvc_proc_test_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
- void *resp)
-{
- dprintk("lockd: TEST_MSG called\n");
- return nlmsvc_callback(rqstp, NLMPROC_TEST_RES, argp, nlmsvc_proc_test);
-}
-
-static __be32 nlmsvc_proc_lock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
- void *resp)
-{
- dprintk("lockd: LOCK_MSG called\n");
- return nlmsvc_callback(rqstp, NLMPROC_LOCK_RES, argp, nlmsvc_proc_lock);
-}
-
-static __be32 nlmsvc_proc_cancel_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
- void *resp)
-{
- dprintk("lockd: CANCEL_MSG called\n");
- return nlmsvc_callback(rqstp, NLMPROC_CANCEL_RES, argp, nlmsvc_proc_cancel);
-}
-
-static __be32
-nlmsvc_proc_unlock_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
- void *resp)
-{
- dprintk("lockd: UNLOCK_MSG called\n");
- return nlmsvc_callback(rqstp, NLMPROC_UNLOCK_RES, argp, nlmsvc_proc_unlock);
-}
-
-static __be32
-nlmsvc_proc_granted_msg(struct svc_rqst *rqstp, struct nlm_args *argp,
- void *resp)
-{
- dprintk("lockd: GRANTED_MSG called\n");
- return nlmsvc_callback(rqstp, NLMPROC_GRANTED_RES, argp, nlmsvc_proc_granted);
-}
-
-/*
- * SHARE: create a DOS share or alter existing share.
- */
-static __be32
-nlmsvc_proc_share(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_res *resp)
-{
- struct nlm_host *host;
- struct nlm_file *file;
-
- dprintk("lockd: SHARE called\n");
-
- resp->cookie = argp->cookie;
-
- /* Don't accept new lock requests during grace period */
- if (locks_in_grace() && !argp->reclaim) {
- resp->status = nlm_lck_denied_grace_period;
- return rpc_success;
- }
-
- /* Obtain client and file */
- if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
- return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
-
- /* Now try to create the share */
- resp->status = cast_status(nlmsvc_share_file(host, file, argp));
-
- dprintk("lockd: SHARE status %d\n", ntohl(resp->status));
- nlmsvc_release_host(host);
- nlm_release_file(file);
- return rpc_success;
-}
-
-/*
- * UNSHARE: Release a DOS share.
- */
-static __be32
-nlmsvc_proc_unshare(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_res *resp)
-{
- struct nlm_host *host;
- struct nlm_file *file;
-
- dprintk("lockd: UNSHARE called\n");
-
- resp->cookie = argp->cookie;
-
- /* Don't accept requests during grace period */
- if (locks_in_grace()) {
- resp->status = nlm_lck_denied_grace_period;
- return rpc_success;
- }
-
- /* Obtain client and file */
- if ((resp->status = nlmsvc_retrieve_args(rqstp, argp, &host, &file)))
- return resp->status == nlm_drop_reply ? rpc_drop_reply :rpc_success;
-
- /* Now try to unshare the file */
- resp->status = cast_status(nlmsvc_unshare_file(host, file, argp));
-
- dprintk("lockd: UNSHARE status %d\n", ntohl(resp->status));
- nlmsvc_release_host(host);
- nlm_release_file(file);
- return rpc_success;
-}
-
-/*
- * NM_LOCK: Create an unmonitored lock
- */
-static __be32
-nlmsvc_proc_nm_lock(struct svc_rqst *rqstp, struct nlm_args *argp,
- struct nlm_res *resp)
-{
- dprintk("lockd: NM_LOCK called\n");
-
- argp->monitor = 0; /* just clean the monitor flag */
- return nlmsvc_proc_lock(rqstp, argp, resp);
-}
-
-/*
- * FREE_ALL: Release all locks and shares held by client
- */
-static __be32
-nlmsvc_proc_free_all(struct svc_rqst *rqstp, struct nlm_args *argp,
- void *resp)
-{
- struct nlm_host *host;
-
- /* Obtain client */
- if (nlmsvc_retrieve_args(rqstp, argp, &host, NULL))
- return rpc_success;
-
- nlmsvc_free_host_resources(host);
- nlmsvc_release_host(host);
- return rpc_success;
-}
-
-/*
- * SM_NOTIFY: private callback from statd (not part of official NLM proto)
- */
-static __be32
-nlmsvc_proc_sm_notify(struct svc_rqst *rqstp, struct nlm_reboot *argp,
- void *resp)
-{
- dprintk("lockd: SM_NOTIFY called\n");
-
- if (!nlm_privileged_requester(rqstp)) {
- char buf[RPC_MAX_ADDRBUFLEN];
- printk(KERN_WARNING "lockd: rejected NSM callback from %s\n",
- svc_print_addr(rqstp, buf, sizeof(buf)));
- return rpc_system_err;
- }
-
- nlm_host_rebooted(argp);
- return rpc_success;
-}
-
-/*
- * client sent a GRANTED_RES, let's remove the associated block
- */
-static __be32
-nlmsvc_proc_granted_res(struct svc_rqst *rqstp, struct nlm_res *argp,
- void *resp)
-{
- if (!nlmsvc_ops)
- return rpc_success;
-
- dprintk("lockd: GRANTED_RES called\n");
-
- nlmsvc_grant_reply(&argp->cookie, argp->status);
- return rpc_success;
-}
-
-/*
- * NLM Server procedures.
- */
-
-#define nlmsvc_encode_norep nlmsvc_encode_void
-#define nlmsvc_decode_norep nlmsvc_decode_void
-#define nlmsvc_decode_testres nlmsvc_decode_void
-#define nlmsvc_decode_lockres nlmsvc_decode_void
-#define nlmsvc_decode_unlockres nlmsvc_decode_void
-#define nlmsvc_decode_cancelres nlmsvc_decode_void
-#define nlmsvc_decode_grantedres nlmsvc_decode_void
-
-#define nlmsvc_proc_none nlmsvc_proc_null
-#define nlmsvc_proc_test_res nlmsvc_proc_null
-#define nlmsvc_proc_lock_res nlmsvc_proc_null
-#define nlmsvc_proc_cancel_res nlmsvc_proc_null
-#define nlmsvc_proc_unlock_res nlmsvc_proc_null
-
-struct nlm_void { int dummy; };
-
-#define PROC(name, xargt, xrest, argt, rest, respsize) \
- { .pc_func = (svc_procfunc) nlmsvc_proc_##name, \
- .pc_decode = (kxdrproc_t) nlmsvc_decode_##xargt, \
- .pc_encode = (kxdrproc_t) nlmsvc_encode_##xrest, \
- .pc_release = NULL, \
- .pc_argsize = sizeof(struct nlm_##argt), \
- .pc_ressize = sizeof(struct nlm_##rest), \
- .pc_xdrressize = respsize, \
- }
-
-#define Ck (1+XDR_QUADLEN(NLM_MAXCOOKIELEN)) /* cookie */
-#define St 1 /* status */
-#define No (1+1024/4) /* Net Obj */
-#define Rg 2 /* range - offset + size */
-
-struct svc_procedure nlmsvc_procedures[] = {
- PROC(null, void, void, void, void, 1),
- PROC(test, testargs, testres, args, res, Ck+St+2+No+Rg),
- PROC(lock, lockargs, res, args, res, Ck+St),
- PROC(cancel, cancargs, res, args, res, Ck+St),
- PROC(unlock, unlockargs, res, args, res, Ck+St),
- PROC(granted, testargs, res, args, res, Ck+St),
- PROC(test_msg, testargs, norep, args, void, 1),
- PROC(lock_msg, lockargs, norep, args, void, 1),
- PROC(cancel_msg, cancargs, norep, args, void, 1),
- PROC(unlock_msg, unlockargs, norep, args, void, 1),
- PROC(granted_msg, testargs, norep, args, void, 1),
- PROC(test_res, testres, norep, res, void, 1),
- PROC(lock_res, lockres, norep, res, void, 1),
- PROC(cancel_res, cancelres, norep, res, void, 1),
- PROC(unlock_res, unlockres, norep, res, void, 1),
- PROC(granted_res, res, norep, res, void, 1),
- /* statd callback */
- PROC(sm_notify, reboot, void, reboot, void, 1),
- PROC(none, void, void, void, void, 1),
- PROC(none, void, void, void, void, 1),
- PROC(none, void, void, void, void, 1),
- PROC(share, shareargs, shareres, args, res, Ck+St+1),
- PROC(unshare, shareargs, shareres, args, res, Ck+St+1),
- PROC(nm_lock, lockargs, res, args, res, Ck+St),
- PROC(free_all, notify, void, args, void, 0),
-
-};
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