~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/fs/nfsd/lockd.c

Version: ~ [ linux-5.15-rc5 ] ~ [ linux-5.14.11 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.72 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.152 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.210 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.250 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.286 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.288 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 // SPDX-License-Identifier: GPL-2.0
  2 /*
  3  * This file contains all the stubs needed when communicating with lockd.
  4  * This level of indirection is necessary so we can run nfsd+lockd without
  5  * requiring the nfs client to be compiled in/loaded, and vice versa.
  6  *
  7  * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
  8  */
  9 
 10 #include <linux/file.h>
 11 #include <linux/lockd/bind.h>
 12 #include "nfsd.h"
 13 #include "vfs.h"
 14 
 15 #define NFSDDBG_FACILITY                NFSDDBG_LOCKD
 16 
 17 #ifdef CONFIG_LOCKD_V4
 18 #define nlm_stale_fh    nlm4_stale_fh
 19 #define nlm_failed      nlm4_failed
 20 #else
 21 #define nlm_stale_fh    nlm_lck_denied_nolocks
 22 #define nlm_failed      nlm_lck_denied_nolocks
 23 #endif
 24 /*
 25  * Note: we hold the dentry use count while the file is open.
 26  */
 27 static __be32
 28 nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp)
 29 {
 30         __be32          nfserr;
 31         struct svc_fh   fh;
 32 
 33         /* must initialize before using! but maxsize doesn't matter */
 34         fh_init(&fh,0);
 35         fh.fh_handle.fh_size = f->size;
 36         memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
 37         fh.fh_export = NULL;
 38 
 39         nfserr = nfsd_open(rqstp, &fh, S_IFREG, NFSD_MAY_LOCK, filp);
 40         fh_put(&fh);
 41         /* We return nlm error codes as nlm doesn't know
 42          * about nfsd, but nfsd does know about nlm..
 43          */
 44         switch (nfserr) {
 45         case nfs_ok:
 46                 return 0;
 47         case nfserr_dropit:
 48                 return nlm_drop_reply;
 49         case nfserr_stale:
 50                 return nlm_stale_fh;
 51         default:
 52                 return nlm_failed;
 53         }
 54 }
 55 
 56 static void
 57 nlm_fclose(struct file *filp)
 58 {
 59         fput(filp);
 60 }
 61 
 62 static const struct nlmsvc_binding nfsd_nlm_ops = {
 63         .fopen          = nlm_fopen,            /* open file for locking */
 64         .fclose         = nlm_fclose,           /* close file */
 65 };
 66 
 67 void
 68 nfsd_lockd_init(void)
 69 {
 70         dprintk("nfsd: initializing lockd\n");
 71         nlmsvc_ops = &nfsd_nlm_ops;
 72 }
 73 
 74 void
 75 nfsd_lockd_shutdown(void)
 76 {
 77         nlmsvc_ops = NULL;
 78 }
 79 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp