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| 1 | /* | |||
| 2 | * linux/fs/nfsd/lockd.c | |||
| 3 | * | |||
| 4 | * This file contains all the stubs needed when communicating with lockd. | |||
| 5 | * This level of indirection is necessary so we can run nfsd+lockd without | |||
| 6 | * requiring the nfs client to be compiled in/loaded, and vice versa. | |||
| 7 | * | |||
| 8 | * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de> | |||
| 9 | */ | |||
| 10 | ||||
| 11 | #include <linux/types.h> | |||
| 12 | #include <linux/fs.h> | |||
| 13 | #include <linux/file.h> | |||
| 14 | #include <linux/mount.h> | |||
| 15 | #include <linux/sunrpc/clnt.h> | |||
| 16 | #include <linux/sunrpc/svc.h> | |||
| 17 | #include <linux/nfsd/nfsd.h> | |||
| 18 | #include <linux/lockd/bind.h> | |||
| 19 | ||||
| 20 | #define NFSDDBG_FACILITY NFSDDBG_LOCKD | |||
| 21 | ||||
| 22 | /* | |||
| 23 | * Note: we hold the dentry use count while the file is open. | |||
| 24 | */ | |||
| 25 | static u32 | |||
| 0 | 0 | - | 26 | nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp) |
| 27 | { | |||
| 28 | u32 nfserr; | |||
| 29 | struct svc_fh fh; | |||
| 30 | ||||
| 31 | /* must initialize before using! but maxsize doesn't matter */ | |||
| 32 | fh_init(&fh,0); | |||
| 33 | fh.fh_handle.fh_size = f->size; | |||
| 34 | memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size); | |||
| 35 | fh.fh_export = NULL; | |||
| 36 | ||||
| 37 | exp_readlock(); | |||
| 38 | nfserr = nfsd_open(rqstp, &fh, S_IFREG, MAY_LOCK, filp); | |||
| 39 | fh_put(&fh); | |||
| 40 | rqstp->rq_client = NULL; | |||
| 41 | exp_readunlock(); | |||
| 42 | /* nlm and nfsd don't share error codes. | |||
| 43 | * we invent: 0 = no error | |||
| 44 | * 1 = stale file handle | |||
| 45 | * 2 = other error | |||
| 46 | */ | |||
| 47 | switch (nfserr) { | |||
| 0 | - | 48 | case nfs_ok: | |
| 0 | - | 49 | return 0; | |
| 0 | - | 50 | case nfserr_stale: | |
| 0 | - | 51 | return 1; | |
| 0 | - | 52 | default: | |
| 0 | - | 53 | return 2; | |
| 54 | } | |||
| 55 | } | |||
| 56 | ||||
| 57 | static void | |||
| 0 | 0 | - | 58 | nlm_fclose(struct file *filp) |
| 59 | { | |||
| 60 | fput(filp); | |||
| 61 | } | |||
| 62 | ||||
| 63 | static struct nlmsvc_binding nfsd_nlm_ops = { | |||
| 64 | .fopen = nlm_fopen, /* open file for locking */ | |||
| 65 | .fclose = nlm_fclose, /* close file */ | |||
| 66 | }; | |||
| 67 | ||||
| 68 | void | |||
| 6 | 6 | 69 | nfsd_lockd_init(void) | |
| 70 | { | |||
| 71 | dprintk("nfsd: initializing lockd\n"); | |||
| 0 | 6 | - | 71 | if (nfsd_debug & 0x0200) |
| 0 | 6 | - | 71 | do-while (0) |
| 72 | nlmsvc_ops = &nfsd_nlm_ops; | |||
| 73 | } | |||
| 74 | ||||
| 75 | void | |||
| 0 | 0 | - | 76 | nfsd_lockd_shutdown(void) |
| 77 | { | |||
| 78 | nlmsvc_ops = NULL; | |||
| 79 | } | |||
| ***TER 21% (3/14) of SOURCE FILE lockd.c | ||||