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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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756 lines
20 KiB
C
756 lines
20 KiB
C
/*
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* Process version 2 NFS requests.
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*
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* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
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*/
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#include <linux/namei.h>
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#include "cache.h"
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#include "xdr.h"
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#include "vfs.h"
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typedef struct svc_rqst svc_rqst;
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typedef struct svc_buf svc_buf;
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#define NFSDDBG_FACILITY NFSDDBG_PROC
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static __be32
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nfsd_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
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{
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return nfs_ok;
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}
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static __be32
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nfsd_return_attrs(__be32 err, struct nfsd_attrstat *resp)
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{
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if (err) return err;
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return fh_getattr(&resp->fh, &resp->stat);
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}
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static __be32
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nfsd_return_dirop(__be32 err, struct nfsd_diropres *resp)
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{
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if (err) return err;
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return fh_getattr(&resp->fh, &resp->stat);
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}
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/*
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* Get a file's attributes
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* N.B. After this call resp->fh needs an fh_put
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*/
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static __be32
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nfsd_proc_getattr(struct svc_rqst *rqstp, struct nfsd_fhandle *argp,
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struct nfsd_attrstat *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: GETATTR %s\n", SVCFH_fmt(&argp->fh));
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fh_copy(&resp->fh, &argp->fh);
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nfserr = fh_verify(rqstp, &resp->fh, 0,
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NFSD_MAY_NOP | NFSD_MAY_BYPASS_GSS_ON_ROOT);
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return nfsd_return_attrs(nfserr, resp);
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}
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/*
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* Set a file's attributes
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* N.B. After this call resp->fh needs an fh_put
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*/
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static __be32
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nfsd_proc_setattr(struct svc_rqst *rqstp, struct nfsd_sattrargs *argp,
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struct nfsd_attrstat *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: SETATTR %s, valid=%x, size=%ld\n",
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SVCFH_fmt(&argp->fh),
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argp->attrs.ia_valid, (long) argp->attrs.ia_size);
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fh_copy(&resp->fh, &argp->fh);
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nfserr = nfsd_setattr(rqstp, &resp->fh, &argp->attrs,0, (time_t)0);
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return nfsd_return_attrs(nfserr, resp);
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}
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/*
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* Look up a path name component
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* Note: the dentry in the resp->fh may be negative if the file
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* doesn't exist yet.
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* N.B. After this call resp->fh needs an fh_put
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*/
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static __be32
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nfsd_proc_lookup(struct svc_rqst *rqstp, struct nfsd_diropargs *argp,
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struct nfsd_diropres *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: LOOKUP %s %.*s\n",
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SVCFH_fmt(&argp->fh), argp->len, argp->name);
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fh_init(&resp->fh, NFS_FHSIZE);
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nfserr = nfsd_lookup(rqstp, &argp->fh, argp->name, argp->len,
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&resp->fh);
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fh_put(&argp->fh);
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return nfsd_return_dirop(nfserr, resp);
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}
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/*
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* Read a symlink.
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*/
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static __be32
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nfsd_proc_readlink(struct svc_rqst *rqstp, struct nfsd_readlinkargs *argp,
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struct nfsd_readlinkres *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: READLINK %s\n", SVCFH_fmt(&argp->fh));
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/* Read the symlink. */
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resp->len = NFS_MAXPATHLEN;
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nfserr = nfsd_readlink(rqstp, &argp->fh, argp->buffer, &resp->len);
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fh_put(&argp->fh);
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return nfserr;
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}
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/*
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* Read a portion of a file.
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* N.B. After this call resp->fh needs an fh_put
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*/
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static __be32
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nfsd_proc_read(struct svc_rqst *rqstp, struct nfsd_readargs *argp,
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struct nfsd_readres *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: READ %s %d bytes at %d\n",
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SVCFH_fmt(&argp->fh),
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argp->count, argp->offset);
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/* Obtain buffer pointer for payload. 19 is 1 word for
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* status, 17 words for fattr, and 1 word for the byte count.
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*/
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if (NFSSVC_MAXBLKSIZE_V2 < argp->count) {
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char buf[RPC_MAX_ADDRBUFLEN];
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printk(KERN_NOTICE
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"oversized read request from %s (%d bytes)\n",
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svc_print_addr(rqstp, buf, sizeof(buf)),
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argp->count);
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argp->count = NFSSVC_MAXBLKSIZE_V2;
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}
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svc_reserve_auth(rqstp, (19<<2) + argp->count + 4);
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resp->count = argp->count;
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nfserr = nfsd_read(rqstp, fh_copy(&resp->fh, &argp->fh),
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argp->offset,
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rqstp->rq_vec, argp->vlen,
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&resp->count);
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if (nfserr) return nfserr;
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return fh_getattr(&resp->fh, &resp->stat);
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}
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/*
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* Write data to a file
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* N.B. After this call resp->fh needs an fh_put
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*/
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static __be32
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nfsd_proc_write(struct svc_rqst *rqstp, struct nfsd_writeargs *argp,
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struct nfsd_attrstat *resp)
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{
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__be32 nfserr;
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int stable = 1;
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unsigned long cnt = argp->len;
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dprintk("nfsd: WRITE %s %d bytes at %d\n",
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SVCFH_fmt(&argp->fh),
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argp->len, argp->offset);
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nfserr = nfsd_write(rqstp, fh_copy(&resp->fh, &argp->fh), NULL,
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argp->offset,
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rqstp->rq_vec, argp->vlen,
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&cnt,
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&stable);
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return nfsd_return_attrs(nfserr, resp);
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}
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/*
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* CREATE processing is complicated. The keyword here is `overloaded.'
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* The parent directory is kept locked between the check for existence
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* and the actual create() call in compliance with VFS protocols.
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* N.B. After this call _both_ argp->fh and resp->fh need an fh_put
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*/
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static __be32
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nfsd_proc_create(struct svc_rqst *rqstp, struct nfsd_createargs *argp,
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struct nfsd_diropres *resp)
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{
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svc_fh *dirfhp = &argp->fh;
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svc_fh *newfhp = &resp->fh;
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struct iattr *attr = &argp->attrs;
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struct inode *inode;
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struct dentry *dchild;
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int type, mode;
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__be32 nfserr;
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int hosterr;
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dev_t rdev = 0, wanted = new_decode_dev(attr->ia_size);
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dprintk("nfsd: CREATE %s %.*s\n",
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SVCFH_fmt(dirfhp), argp->len, argp->name);
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/* First verify the parent file handle */
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nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_EXEC);
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if (nfserr)
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goto done; /* must fh_put dirfhp even on error */
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/* Check for NFSD_MAY_WRITE in nfsd_create if necessary */
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nfserr = nfserr_acces;
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if (!argp->len)
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goto done;
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nfserr = nfserr_exist;
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if (isdotent(argp->name, argp->len))
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goto done;
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hosterr = fh_want_write(dirfhp);
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if (hosterr) {
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nfserr = nfserrno(hosterr);
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goto done;
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}
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fh_lock_nested(dirfhp, I_MUTEX_PARENT);
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dchild = lookup_one_len(argp->name, dirfhp->fh_dentry, argp->len);
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if (IS_ERR(dchild)) {
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nfserr = nfserrno(PTR_ERR(dchild));
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goto out_unlock;
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}
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fh_init(newfhp, NFS_FHSIZE);
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nfserr = fh_compose(newfhp, dirfhp->fh_export, dchild, dirfhp);
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if (!nfserr && !dchild->d_inode)
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nfserr = nfserr_noent;
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dput(dchild);
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if (nfserr) {
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if (nfserr != nfserr_noent)
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goto out_unlock;
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/*
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* If the new file handle wasn't verified, we can't tell
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* whether the file exists or not. Time to bail ...
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*/
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nfserr = nfserr_acces;
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if (!newfhp->fh_dentry) {
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printk(KERN_WARNING
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"nfsd_proc_create: file handle not verified\n");
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goto out_unlock;
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}
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}
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inode = newfhp->fh_dentry->d_inode;
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/* Unfudge the mode bits */
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if (attr->ia_valid & ATTR_MODE) {
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type = attr->ia_mode & S_IFMT;
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mode = attr->ia_mode & ~S_IFMT;
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if (!type) {
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/* no type, so if target exists, assume same as that,
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* else assume a file */
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if (inode) {
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type = inode->i_mode & S_IFMT;
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switch(type) {
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case S_IFCHR:
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case S_IFBLK:
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/* reserve rdev for later checking */
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rdev = inode->i_rdev;
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attr->ia_valid |= ATTR_SIZE;
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/* FALLTHROUGH */
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case S_IFIFO:
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/* this is probably a permission check..
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* at least IRIX implements perm checking on
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* echo thing > device-special-file-or-pipe
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* by doing a CREATE with type==0
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*/
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nfserr = nfsd_permission(rqstp,
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newfhp->fh_export,
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newfhp->fh_dentry,
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NFSD_MAY_WRITE|NFSD_MAY_LOCAL_ACCESS);
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if (nfserr && nfserr != nfserr_rofs)
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goto out_unlock;
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}
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} else
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type = S_IFREG;
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}
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} else if (inode) {
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type = inode->i_mode & S_IFMT;
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mode = inode->i_mode & ~S_IFMT;
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} else {
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type = S_IFREG;
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mode = 0; /* ??? */
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}
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attr->ia_valid |= ATTR_MODE;
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attr->ia_mode = mode;
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/* Special treatment for non-regular files according to the
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* gospel of sun micro
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*/
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if (type != S_IFREG) {
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if (type != S_IFBLK && type != S_IFCHR) {
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rdev = 0;
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} else if (type == S_IFCHR && !(attr->ia_valid & ATTR_SIZE)) {
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/* If you think you've seen the worst, grok this. */
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type = S_IFIFO;
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} else {
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/* Okay, char or block special */
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if (!rdev)
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rdev = wanted;
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}
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/* we've used the SIZE information, so discard it */
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attr->ia_valid &= ~ATTR_SIZE;
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/* Make sure the type and device matches */
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nfserr = nfserr_exist;
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if (inode && type != (inode->i_mode & S_IFMT))
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goto out_unlock;
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}
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nfserr = 0;
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if (!inode) {
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/* File doesn't exist. Create it and set attrs */
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nfserr = nfsd_create(rqstp, dirfhp, argp->name, argp->len,
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attr, type, rdev, newfhp);
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} else if (type == S_IFREG) {
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dprintk("nfsd: existing %s, valid=%x, size=%ld\n",
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argp->name, attr->ia_valid, (long) attr->ia_size);
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/* File already exists. We ignore all attributes except
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* size, so that creat() behaves exactly like
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* open(..., O_CREAT|O_TRUNC|O_WRONLY).
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*/
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attr->ia_valid &= ATTR_SIZE;
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if (attr->ia_valid)
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nfserr = nfsd_setattr(rqstp, newfhp, attr, 0, (time_t)0);
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}
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out_unlock:
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/* We don't really need to unlock, as fh_put does it. */
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fh_unlock(dirfhp);
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fh_drop_write(dirfhp);
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done:
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fh_put(dirfhp);
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return nfsd_return_dirop(nfserr, resp);
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}
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static __be32
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nfsd_proc_remove(struct svc_rqst *rqstp, struct nfsd_diropargs *argp,
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void *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: REMOVE %s %.*s\n", SVCFH_fmt(&argp->fh),
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argp->len, argp->name);
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/* Unlink. -SIFDIR means file must not be a directory */
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nfserr = nfsd_unlink(rqstp, &argp->fh, -S_IFDIR, argp->name, argp->len);
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fh_put(&argp->fh);
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return nfserr;
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}
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static __be32
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nfsd_proc_rename(struct svc_rqst *rqstp, struct nfsd_renameargs *argp,
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void *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: RENAME %s %.*s -> \n",
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SVCFH_fmt(&argp->ffh), argp->flen, argp->fname);
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dprintk("nfsd: -> %s %.*s\n",
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SVCFH_fmt(&argp->tfh), argp->tlen, argp->tname);
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nfserr = nfsd_rename(rqstp, &argp->ffh, argp->fname, argp->flen,
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&argp->tfh, argp->tname, argp->tlen);
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fh_put(&argp->ffh);
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fh_put(&argp->tfh);
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return nfserr;
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}
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static __be32
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nfsd_proc_link(struct svc_rqst *rqstp, struct nfsd_linkargs *argp,
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void *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: LINK %s ->\n",
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SVCFH_fmt(&argp->ffh));
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dprintk("nfsd: %s %.*s\n",
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SVCFH_fmt(&argp->tfh),
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argp->tlen,
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argp->tname);
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nfserr = nfsd_link(rqstp, &argp->tfh, argp->tname, argp->tlen,
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&argp->ffh);
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fh_put(&argp->ffh);
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fh_put(&argp->tfh);
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return nfserr;
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}
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static __be32
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nfsd_proc_symlink(struct svc_rqst *rqstp, struct nfsd_symlinkargs *argp,
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void *resp)
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{
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struct svc_fh newfh;
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__be32 nfserr;
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dprintk("nfsd: SYMLINK %s %.*s -> %.*s\n",
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SVCFH_fmt(&argp->ffh), argp->flen, argp->fname,
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argp->tlen, argp->tname);
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fh_init(&newfh, NFS_FHSIZE);
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/*
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* Create the link, look up new file and set attrs.
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*/
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nfserr = nfsd_symlink(rqstp, &argp->ffh, argp->fname, argp->flen,
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argp->tname, argp->tlen,
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&newfh, &argp->attrs);
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fh_put(&argp->ffh);
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fh_put(&newfh);
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return nfserr;
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}
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/*
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* Make directory. This operation is not idempotent.
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* N.B. After this call resp->fh needs an fh_put
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*/
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static __be32
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nfsd_proc_mkdir(struct svc_rqst *rqstp, struct nfsd_createargs *argp,
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struct nfsd_diropres *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: MKDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
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if (resp->fh.fh_dentry) {
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printk(KERN_WARNING
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"nfsd_proc_mkdir: response already verified??\n");
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}
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argp->attrs.ia_valid &= ~ATTR_SIZE;
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fh_init(&resp->fh, NFS_FHSIZE);
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nfserr = nfsd_create(rqstp, &argp->fh, argp->name, argp->len,
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&argp->attrs, S_IFDIR, 0, &resp->fh);
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fh_put(&argp->fh);
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return nfsd_return_dirop(nfserr, resp);
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}
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/*
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* Remove a directory
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*/
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static __be32
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nfsd_proc_rmdir(struct svc_rqst *rqstp, struct nfsd_diropargs *argp,
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void *resp)
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{
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__be32 nfserr;
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dprintk("nfsd: RMDIR %s %.*s\n", SVCFH_fmt(&argp->fh), argp->len, argp->name);
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nfserr = nfsd_unlink(rqstp, &argp->fh, S_IFDIR, argp->name, argp->len);
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fh_put(&argp->fh);
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return nfserr;
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}
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/*
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* Read a portion of a directory.
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*/
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static __be32
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nfsd_proc_readdir(struct svc_rqst *rqstp, struct nfsd_readdirargs *argp,
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struct nfsd_readdirres *resp)
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{
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int count;
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__be32 nfserr;
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loff_t offset;
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dprintk("nfsd: READDIR %s %d bytes at %d\n",
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SVCFH_fmt(&argp->fh),
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argp->count, argp->cookie);
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/* Shrink to the client read size */
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count = (argp->count >> 2) - 2;
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/* Make sure we've room for the NULL ptr & eof flag */
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count -= 2;
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if (count < 0)
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count = 0;
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resp->buffer = argp->buffer;
|
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resp->offset = NULL;
|
|
resp->buflen = count;
|
|
resp->common.err = nfs_ok;
|
|
/* Read directory and encode entries on the fly */
|
|
offset = argp->cookie;
|
|
nfserr = nfsd_readdir(rqstp, &argp->fh, &offset,
|
|
&resp->common, nfssvc_encode_entry);
|
|
|
|
resp->count = resp->buffer - argp->buffer;
|
|
if (resp->offset)
|
|
*resp->offset = htonl(offset);
|
|
|
|
fh_put(&argp->fh);
|
|
return nfserr;
|
|
}
|
|
|
|
/*
|
|
* Get file system info
|
|
*/
|
|
static __be32
|
|
nfsd_proc_statfs(struct svc_rqst * rqstp, struct nfsd_fhandle *argp,
|
|
struct nfsd_statfsres *resp)
|
|
{
|
|
__be32 nfserr;
|
|
|
|
dprintk("nfsd: STATFS %s\n", SVCFH_fmt(&argp->fh));
|
|
|
|
nfserr = nfsd_statfs(rqstp, &argp->fh, &resp->stats,
|
|
NFSD_MAY_BYPASS_GSS_ON_ROOT);
|
|
fh_put(&argp->fh);
|
|
return nfserr;
|
|
}
|
|
|
|
/*
|
|
* NFSv2 Server procedures.
|
|
* Only the results of non-idempotent operations are cached.
|
|
*/
|
|
struct nfsd_void { int dummy; };
|
|
|
|
#define ST 1 /* status */
|
|
#define FH 8 /* filehandle */
|
|
#define AT 18 /* attributes */
|
|
|
|
static struct svc_procedure nfsd_procedures2[18] = {
|
|
[NFSPROC_NULL] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_null,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_void,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
|
|
.pc_argsize = sizeof(struct nfsd_void),
|
|
.pc_ressize = sizeof(struct nfsd_void),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST,
|
|
},
|
|
[NFSPROC_GETATTR] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_getattr,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
|
|
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_fhandle),
|
|
.pc_ressize = sizeof(struct nfsd_attrstat),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+AT,
|
|
},
|
|
[NFSPROC_SETATTR] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_setattr,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_sattrargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
|
|
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_sattrargs),
|
|
.pc_ressize = sizeof(struct nfsd_attrstat),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+AT,
|
|
},
|
|
[NFSPROC_ROOT] = {
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_void,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
|
|
.pc_argsize = sizeof(struct nfsd_void),
|
|
.pc_ressize = sizeof(struct nfsd_void),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST,
|
|
},
|
|
[NFSPROC_LOOKUP] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_lookup,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
|
|
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_diropargs),
|
|
.pc_ressize = sizeof(struct nfsd_diropres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+FH+AT,
|
|
},
|
|
[NFSPROC_READLINK] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_readlink,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_readlinkargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_readlinkres,
|
|
.pc_argsize = sizeof(struct nfsd_readlinkargs),
|
|
.pc_ressize = sizeof(struct nfsd_readlinkres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+1+NFS_MAXPATHLEN/4,
|
|
},
|
|
[NFSPROC_READ] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_read,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_readargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_readres,
|
|
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_readargs),
|
|
.pc_ressize = sizeof(struct nfsd_readres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
|
|
},
|
|
[NFSPROC_WRITECACHE] = {
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_void,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
|
|
.pc_argsize = sizeof(struct nfsd_void),
|
|
.pc_ressize = sizeof(struct nfsd_void),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST,
|
|
},
|
|
[NFSPROC_WRITE] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_write,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_writeargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
|
|
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_writeargs),
|
|
.pc_ressize = sizeof(struct nfsd_attrstat),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+AT,
|
|
},
|
|
[NFSPROC_CREATE] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_create,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
|
|
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_createargs),
|
|
.pc_ressize = sizeof(struct nfsd_diropres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+FH+AT,
|
|
},
|
|
[NFSPROC_REMOVE] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_remove,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
|
|
.pc_argsize = sizeof(struct nfsd_diropargs),
|
|
.pc_ressize = sizeof(struct nfsd_void),
|
|
.pc_cachetype = RC_REPLSTAT,
|
|
.pc_xdrressize = ST,
|
|
},
|
|
[NFSPROC_RENAME] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_rename,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_renameargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
|
|
.pc_argsize = sizeof(struct nfsd_renameargs),
|
|
.pc_ressize = sizeof(struct nfsd_void),
|
|
.pc_cachetype = RC_REPLSTAT,
|
|
.pc_xdrressize = ST,
|
|
},
|
|
[NFSPROC_LINK] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_link,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_linkargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
|
|
.pc_argsize = sizeof(struct nfsd_linkargs),
|
|
.pc_ressize = sizeof(struct nfsd_void),
|
|
.pc_cachetype = RC_REPLSTAT,
|
|
.pc_xdrressize = ST,
|
|
},
|
|
[NFSPROC_SYMLINK] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_symlink,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_symlinkargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
|
|
.pc_argsize = sizeof(struct nfsd_symlinkargs),
|
|
.pc_ressize = sizeof(struct nfsd_void),
|
|
.pc_cachetype = RC_REPLSTAT,
|
|
.pc_xdrressize = ST,
|
|
},
|
|
[NFSPROC_MKDIR] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_mkdir,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
|
|
.pc_release = (kxdrproc_t) nfssvc_release_fhandle,
|
|
.pc_argsize = sizeof(struct nfsd_createargs),
|
|
.pc_ressize = sizeof(struct nfsd_diropres),
|
|
.pc_cachetype = RC_REPLBUFF,
|
|
.pc_xdrressize = ST+FH+AT,
|
|
},
|
|
[NFSPROC_RMDIR] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_rmdir,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_void,
|
|
.pc_argsize = sizeof(struct nfsd_diropargs),
|
|
.pc_ressize = sizeof(struct nfsd_void),
|
|
.pc_cachetype = RC_REPLSTAT,
|
|
.pc_xdrressize = ST,
|
|
},
|
|
[NFSPROC_READDIR] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_readdir,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_readdirargs,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_readdirres,
|
|
.pc_argsize = sizeof(struct nfsd_readdirargs),
|
|
.pc_ressize = sizeof(struct nfsd_readdirres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
},
|
|
[NFSPROC_STATFS] = {
|
|
.pc_func = (svc_procfunc) nfsd_proc_statfs,
|
|
.pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
|
|
.pc_encode = (kxdrproc_t) nfssvc_encode_statfsres,
|
|
.pc_argsize = sizeof(struct nfsd_fhandle),
|
|
.pc_ressize = sizeof(struct nfsd_statfsres),
|
|
.pc_cachetype = RC_NOCACHE,
|
|
.pc_xdrressize = ST+5,
|
|
},
|
|
};
|
|
|
|
|
|
struct svc_version nfsd_version2 = {
|
|
.vs_vers = 2,
|
|
.vs_nproc = 18,
|
|
.vs_proc = nfsd_procedures2,
|
|
.vs_dispatch = nfsd_dispatch,
|
|
.vs_xdrsize = NFS2_SVC_XDRSIZE,
|
|
};
|
|
|
|
/*
|
|
* Map errnos to NFS errnos.
|
|
*/
|
|
__be32
|
|
nfserrno (int errno)
|
|
{
|
|
static struct {
|
|
__be32 nfserr;
|
|
int syserr;
|
|
} nfs_errtbl[] = {
|
|
{ nfs_ok, 0 },
|
|
{ nfserr_perm, -EPERM },
|
|
{ nfserr_noent, -ENOENT },
|
|
{ nfserr_io, -EIO },
|
|
{ nfserr_nxio, -ENXIO },
|
|
{ nfserr_acces, -EACCES },
|
|
{ nfserr_exist, -EEXIST },
|
|
{ nfserr_xdev, -EXDEV },
|
|
{ nfserr_mlink, -EMLINK },
|
|
{ nfserr_nodev, -ENODEV },
|
|
{ nfserr_notdir, -ENOTDIR },
|
|
{ nfserr_isdir, -EISDIR },
|
|
{ nfserr_inval, -EINVAL },
|
|
{ nfserr_fbig, -EFBIG },
|
|
{ nfserr_nospc, -ENOSPC },
|
|
{ nfserr_rofs, -EROFS },
|
|
{ nfserr_mlink, -EMLINK },
|
|
{ nfserr_nametoolong, -ENAMETOOLONG },
|
|
{ nfserr_notempty, -ENOTEMPTY },
|
|
#ifdef EDQUOT
|
|
{ nfserr_dquot, -EDQUOT },
|
|
#endif
|
|
{ nfserr_stale, -ESTALE },
|
|
{ nfserr_jukebox, -ETIMEDOUT },
|
|
{ nfserr_jukebox, -ERESTARTSYS },
|
|
{ nfserr_jukebox, -EAGAIN },
|
|
{ nfserr_jukebox, -EWOULDBLOCK },
|
|
{ nfserr_jukebox, -ENOMEM },
|
|
{ nfserr_io, -ETXTBSY },
|
|
{ nfserr_notsupp, -EOPNOTSUPP },
|
|
{ nfserr_toosmall, -ETOOSMALL },
|
|
{ nfserr_serverfault, -ESERVERFAULT },
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(nfs_errtbl); i++) {
|
|
if (nfs_errtbl[i].syserr == errno)
|
|
return nfs_errtbl[i].nfserr;
|
|
}
|
|
printk (KERN_INFO "nfsd: non-standard errno: %d\n", errno);
|
|
return nfserr_io;
|
|
}
|
|
|