forked from luck/tmp_suning_uos_patched
[PATCH] nfsd: vfs.c endianness annotations
don't use the same variable to store NFS and host error values Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Acked-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Al Viro
Linus Torvalds
parent
2ebbc012a9
commit
6264d69d7d
299
fs/nfsd/vfs.c
299
fs/nfsd/vfs.c
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@ -110,7 +110,7 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
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struct dentry *dentry = *dpp;
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struct vfsmount *mnt = mntget(exp->ex_mnt);
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struct dentry *mounts = dget(dentry);
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int err = nfs_ok;
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int err = 0;
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while (follow_down(&mnt,&mounts)&&d_mountpoint(mounts));
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@ -148,14 +148,15 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
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* clients and is explicitly disallowed for NFSv3
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* NeilBrown <neilb@cse.unsw.edu.au>
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*/
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int
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__be32
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nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
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int len, struct svc_fh *resfh)
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{
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struct svc_export *exp;
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struct dentry *dparent;
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struct dentry *dentry;
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int err;
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__be32 err;
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int host_err;
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dprintk("nfsd: nfsd_lookup(fh %s, %.*s)\n", SVCFH_fmt(fhp), len,name);
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@ -193,7 +194,7 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
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exp2 = exp_parent(exp->ex_client, mnt, dentry,
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&rqstp->rq_chandle);
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if (IS_ERR(exp2)) {
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err = PTR_ERR(exp2);
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host_err = PTR_ERR(exp2);
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dput(dentry);
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mntput(mnt);
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goto out_nfserr;
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@ -210,14 +211,14 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
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} else {
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fh_lock(fhp);
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dentry = lookup_one_len(name, dparent, len);
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err = PTR_ERR(dentry);
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host_err = PTR_ERR(dentry);
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if (IS_ERR(dentry))
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goto out_nfserr;
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/*
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* check if we have crossed a mount point ...
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*/
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if (d_mountpoint(dentry)) {
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if ((err = nfsd_cross_mnt(rqstp, &dentry, &exp))) {
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if ((host_err = nfsd_cross_mnt(rqstp, &dentry, &exp))) {
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dput(dentry);
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goto out_nfserr;
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}
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@ -236,7 +237,7 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
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return err;
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out_nfserr:
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err = nfserrno(err);
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err = nfserrno(host_err);
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goto out;
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}
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@ -244,7 +245,7 @@ nfsd_lookup(struct svc_rqst *rqstp, struct svc_fh *fhp, const char *name,
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* Set various file attributes.
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* N.B. After this call fhp needs an fh_put
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*/
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int
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__be32
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nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
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int check_guard, time_t guardtime)
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{
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@ -253,7 +254,8 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
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int accmode = MAY_SATTR;
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int ftype = 0;
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int imode;
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int err;
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__be32 err;
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int host_err;
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int size_change = 0;
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if (iap->ia_valid & (ATTR_ATIME | ATTR_MTIME | ATTR_SIZE))
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@ -319,19 +321,19 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
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* If we are changing the size of the file, then
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* we need to break all leases.
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*/
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err = break_lease(inode, FMODE_WRITE | O_NONBLOCK);
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if (err == -EWOULDBLOCK)
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err = -ETIMEDOUT;
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if (err) /* ENOMEM or EWOULDBLOCK */
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host_err = break_lease(inode, FMODE_WRITE | O_NONBLOCK);
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if (host_err == -EWOULDBLOCK)
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host_err = -ETIMEDOUT;
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if (host_err) /* ENOMEM or EWOULDBLOCK */
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goto out_nfserr;
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err = get_write_access(inode);
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if (err)
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host_err = get_write_access(inode);
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if (host_err)
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goto out_nfserr;
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size_change = 1;
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err = locks_verify_truncate(inode, NULL, iap->ia_size);
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if (err) {
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host_err = locks_verify_truncate(inode, NULL, iap->ia_size);
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if (host_err) {
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put_write_access(inode);
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goto out_nfserr;
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}
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@ -357,8 +359,8 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
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err = nfserr_notsync;
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if (!check_guard || guardtime == inode->i_ctime.tv_sec) {
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fh_lock(fhp);
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err = notify_change(dentry, iap);
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err = nfserrno(err);
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host_err = notify_change(dentry, iap);
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err = nfserrno(host_err);
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fh_unlock(fhp);
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}
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if (size_change)
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@ -370,7 +372,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
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return err;
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out_nfserr:
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err = nfserrno(err);
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err = nfserrno(host_err);
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goto out;
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}
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@ -420,11 +422,12 @@ set_nfsv4_acl_one(struct dentry *dentry, struct posix_acl *pacl, char *key)
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return error;
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}
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int
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__be32
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nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
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struct nfs4_acl *acl)
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{
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int error;
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__be32 error;
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int host_error;
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struct dentry *dentry;
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struct inode *inode;
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struct posix_acl *pacl = NULL, *dpacl = NULL;
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@ -440,20 +443,20 @@ nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
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if (S_ISDIR(inode->i_mode))
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flags = NFS4_ACL_DIR;
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error = nfs4_acl_nfsv4_to_posix(acl, &pacl, &dpacl, flags);
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if (error == -EINVAL) {
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host_error = nfs4_acl_nfsv4_to_posix(acl, &pacl, &dpacl, flags);
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if (host_error == -EINVAL) {
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error = nfserr_attrnotsupp;
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goto out;
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} else if (error < 0)
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} else if (host_error < 0)
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goto out_nfserr;
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error = set_nfsv4_acl_one(dentry, pacl, POSIX_ACL_XATTR_ACCESS);
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if (error < 0)
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host_error = set_nfsv4_acl_one(dentry, pacl, POSIX_ACL_XATTR_ACCESS);
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if (host_error < 0)
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goto out_nfserr;
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if (S_ISDIR(inode->i_mode)) {
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error = set_nfsv4_acl_one(dentry, dpacl, POSIX_ACL_XATTR_DEFAULT);
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if (error < 0)
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host_error = set_nfsv4_acl_one(dentry, dpacl, POSIX_ACL_XATTR_DEFAULT);
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if (host_error < 0)
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goto out_nfserr;
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}
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@ -464,7 +467,7 @@ nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
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posix_acl_release(dpacl);
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return (error);
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out_nfserr:
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error = nfserrno(error);
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error = nfserrno(host_error);
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goto out;
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}
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@ -571,14 +574,14 @@ static struct accessmap nfs3_anyaccess[] = {
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{ 0, 0 }
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};
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int
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__be32
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nfsd_access(struct svc_rqst *rqstp, struct svc_fh *fhp, u32 *access, u32 *supported)
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{
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struct accessmap *map;
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struct svc_export *export;
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struct dentry *dentry;
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u32 query, result = 0, sresult = 0;
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unsigned int error;
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__be32 error;
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error = fh_verify(rqstp, fhp, 0, MAY_NOP);
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if (error)
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@ -598,7 +601,7 @@ nfsd_access(struct svc_rqst *rqstp, struct svc_fh *fhp, u32 *access, u32 *suppor
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query = *access;
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for (; map->access; map++) {
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if (map->access & query) {
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unsigned int err2;
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__be32 err2;
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sresult |= map->access;
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@ -637,13 +640,15 @@ nfsd_access(struct svc_rqst *rqstp, struct svc_fh *fhp, u32 *access, u32 *suppor
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* The access argument indicates the type of open (read/write/lock)
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* N.B. After this call fhp needs an fh_put
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*/
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int
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__be32
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nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
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int access, struct file **filp)
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{
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struct dentry *dentry;
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struct inode *inode;
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int flags = O_RDONLY|O_LARGEFILE, err;
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int flags = O_RDONLY|O_LARGEFILE;
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__be32 err;
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int host_err;
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/*
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* If we get here, then the client has already done an "open",
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@ -673,10 +678,10 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
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* Check to see if there are any leases on this file.
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* This may block while leases are broken.
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*/
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err = break_lease(inode, O_NONBLOCK | ((access & MAY_WRITE) ? FMODE_WRITE : 0));
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if (err == -EWOULDBLOCK)
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err = -ETIMEDOUT;
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if (err) /* NOMEM or WOULDBLOCK */
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host_err = break_lease(inode, O_NONBLOCK | ((access & MAY_WRITE) ? FMODE_WRITE : 0));
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if (host_err == -EWOULDBLOCK)
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host_err = -ETIMEDOUT;
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if (host_err) /* NOMEM or WOULDBLOCK */
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goto out_nfserr;
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if (access & MAY_WRITE) {
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@ -689,10 +694,9 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
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}
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*filp = dentry_open(dget(dentry), mntget(fhp->fh_export->ex_mnt), flags);
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if (IS_ERR(*filp))
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err = PTR_ERR(*filp);
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host_err = PTR_ERR(*filp);
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out_nfserr:
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if (err)
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err = nfserrno(err);
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err = nfserrno(host_err);
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out:
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return err;
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}
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@ -830,14 +834,15 @@ nfsd_read_actor(read_descriptor_t *desc, struct page *page, unsigned long offset
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return size;
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}
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static int
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static __be32
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nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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loff_t offset, struct kvec *vec, int vlen, unsigned long *count)
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{
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struct inode *inode;
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struct raparms *ra;
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mm_segment_t oldfs;
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int err;
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__be32 err;
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int host_err;
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err = nfserr_perm;
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inode = file->f_dentry->d_inode;
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@ -855,12 +860,12 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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if (file->f_op->sendfile && rqstp->rq_sendfile_ok) {
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rqstp->rq_resused = 1;
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err = file->f_op->sendfile(file, &offset, *count,
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host_err = file->f_op->sendfile(file, &offset, *count,
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nfsd_read_actor, rqstp);
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} else {
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oldfs = get_fs();
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set_fs(KERNEL_DS);
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err = vfs_readv(file, (struct iovec __user *)vec, vlen, &offset);
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host_err = vfs_readv(file, (struct iovec __user *)vec, vlen, &offset);
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set_fs(oldfs);
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}
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@ -874,13 +879,13 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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spin_unlock(&rab->pb_lock);
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}
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if (err >= 0) {
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nfsdstats.io_read += err;
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*count = err;
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if (host_err >= 0) {
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nfsdstats.io_read += host_err;
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*count = host_err;
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err = 0;
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fsnotify_access(file->f_dentry);
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} else
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err = nfserrno(err);
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err = nfserrno(host_err);
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out:
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return err;
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}
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@ -895,7 +900,7 @@ static void kill_suid(struct dentry *dentry)
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mutex_unlock(&dentry->d_inode->i_mutex);
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}
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static int
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static __be32
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nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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loff_t offset, struct kvec *vec, int vlen,
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unsigned long cnt, int *stablep)
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@ -904,7 +909,8 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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struct dentry *dentry;
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struct inode *inode;
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mm_segment_t oldfs;
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int err = 0;
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__be32 err = 0;
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int host_err;
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int stable = *stablep;
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#ifdef MSNFS
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@ -940,18 +946,18 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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/* Write the data. */
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oldfs = get_fs(); set_fs(KERNEL_DS);
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err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset);
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host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset);
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set_fs(oldfs);
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if (err >= 0) {
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if (host_err >= 0) {
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nfsdstats.io_write += cnt;
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fsnotify_modify(file->f_dentry);
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}
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/* clear setuid/setgid flag after write */
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if (err >= 0 && (inode->i_mode & (S_ISUID | S_ISGID)))
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if (host_err >= 0 && (inode->i_mode & (S_ISUID | S_ISGID)))
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kill_suid(dentry);
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if (err >= 0 && stable) {
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if (host_err >= 0 && stable) {
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static ino_t last_ino;
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static dev_t last_dev;
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@ -977,7 +983,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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if (inode->i_state & I_DIRTY) {
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dprintk("nfsd: write sync %d\n", current->pid);
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err=nfsd_sync(file);
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host_err=nfsd_sync(file);
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}
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#if 0
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wake_up(&inode->i_wait);
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@ -987,11 +993,11 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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last_dev = inode->i_sb->s_dev;
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}
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dprintk("nfsd: write complete err=%d\n", err);
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if (err >= 0)
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dprintk("nfsd: write complete host_err=%d\n", host_err);
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if (host_err >= 0)
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err = 0;
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else
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err = nfserrno(err);
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err = nfserrno(host_err);
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out:
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return err;
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}
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@ -1001,12 +1007,12 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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* on entry. On return, *count contains the number of bytes actually read.
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* N.B. After this call fhp needs an fh_put
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*/
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int
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__be32
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nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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loff_t offset, struct kvec *vec, int vlen,
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unsigned long *count)
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{
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int err;
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__be32 err;
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if (file) {
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err = nfsd_permission(fhp->fh_export, fhp->fh_dentry,
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@ -1030,12 +1036,12 @@ nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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* The stable flag requests synchronous writes.
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* N.B. After this call fhp needs an fh_put
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*/
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int
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__be32
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nfsd_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
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loff_t offset, struct kvec *vec, int vlen, unsigned long cnt,
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int *stablep)
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{
|
||||
int err = 0;
|
||||
__be32 err = 0;
|
||||
|
||||
if (file) {
|
||||
err = nfsd_permission(fhp->fh_export, fhp->fh_dentry,
|
||||
|
|
@ -1067,12 +1073,12 @@ nfsd_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
|
|||
* Unfortunately we cannot lock the file to make sure we return full WCC
|
||||
* data to the client, as locking happens lower down in the filesystem.
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_commit(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
||||
loff_t offset, unsigned long count)
|
||||
{
|
||||
struct file *file;
|
||||
int err;
|
||||
__be32 err;
|
||||
|
||||
if ((u64)count > ~(u64)offset)
|
||||
return nfserr_inval;
|
||||
|
|
@ -1100,14 +1106,15 @@ nfsd_commit(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
*
|
||||
* N.B. Every call to nfsd_create needs an fh_put for _both_ fhp and resfhp
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
||||
char *fname, int flen, struct iattr *iap,
|
||||
int type, dev_t rdev, struct svc_fh *resfhp)
|
||||
{
|
||||
struct dentry *dentry, *dchild = NULL;
|
||||
struct inode *dirp;
|
||||
int err;
|
||||
__be32 err;
|
||||
int host_err;
|
||||
|
||||
err = nfserr_perm;
|
||||
if (!flen)
|
||||
|
|
@ -1134,7 +1141,7 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
/* called from nfsd_proc_mkdir, or possibly nfsd3_proc_create */
|
||||
fh_lock_nested(fhp, I_MUTEX_PARENT);
|
||||
dchild = lookup_one_len(fname, dentry, flen);
|
||||
err = PTR_ERR(dchild);
|
||||
host_err = PTR_ERR(dchild);
|
||||
if (IS_ERR(dchild))
|
||||
goto out_nfserr;
|
||||
err = fh_compose(resfhp, fhp->fh_export, dchild, fhp);
|
||||
|
|
@ -1173,22 +1180,22 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
err = nfserr_perm;
|
||||
switch (type) {
|
||||
case S_IFREG:
|
||||
err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
|
||||
host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
|
||||
break;
|
||||
case S_IFDIR:
|
||||
err = vfs_mkdir(dirp, dchild, iap->ia_mode);
|
||||
host_err = vfs_mkdir(dirp, dchild, iap->ia_mode);
|
||||
break;
|
||||
case S_IFCHR:
|
||||
case S_IFBLK:
|
||||
case S_IFIFO:
|
||||
case S_IFSOCK:
|
||||
err = vfs_mknod(dirp, dchild, iap->ia_mode, rdev);
|
||||
host_err = vfs_mknod(dirp, dchild, iap->ia_mode, rdev);
|
||||
break;
|
||||
default:
|
||||
printk("nfsd: bad file type %o in nfsd_create\n", type);
|
||||
err = -EINVAL;
|
||||
host_err = -EINVAL;
|
||||
}
|
||||
if (err < 0)
|
||||
if (host_err < 0)
|
||||
goto out_nfserr;
|
||||
|
||||
if (EX_ISSYNC(fhp->fh_export)) {
|
||||
|
|
@ -1203,7 +1210,7 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
* directories via NFS.
|
||||
*/
|
||||
if ((iap->ia_valid &= ~(ATTR_UID|ATTR_GID|ATTR_MODE)) != 0) {
|
||||
int err2 = nfsd_setattr(rqstp, resfhp, iap, 0, (time_t)0);
|
||||
__be32 err2 = nfsd_setattr(rqstp, resfhp, iap, 0, (time_t)0);
|
||||
if (err2)
|
||||
err = err2;
|
||||
}
|
||||
|
|
@ -1218,7 +1225,7 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
return err;
|
||||
|
||||
out_nfserr:
|
||||
err = nfserrno(err);
|
||||
err = nfserrno(host_err);
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
|
@ -1226,7 +1233,7 @@ nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
/*
|
||||
* NFSv3 version of nfsd_create
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
||||
char *fname, int flen, struct iattr *iap,
|
||||
struct svc_fh *resfhp, int createmode, u32 *verifier,
|
||||
|
|
@ -1234,7 +1241,8 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
{
|
||||
struct dentry *dentry, *dchild = NULL;
|
||||
struct inode *dirp;
|
||||
int err;
|
||||
__be32 err;
|
||||
int host_err;
|
||||
__u32 v_mtime=0, v_atime=0;
|
||||
int v_mode=0;
|
||||
|
||||
|
|
@ -1264,7 +1272,7 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
* Compose the response file handle.
|
||||
*/
|
||||
dchild = lookup_one_len(fname, dentry, flen);
|
||||
err = PTR_ERR(dchild);
|
||||
host_err = PTR_ERR(dchild);
|
||||
if (IS_ERR(dchild))
|
||||
goto out_nfserr;
|
||||
|
||||
|
|
@ -1320,8 +1328,8 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
goto out;
|
||||
}
|
||||
|
||||
err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
|
||||
if (err < 0)
|
||||
host_err = vfs_create(dirp, dchild, iap->ia_mode, NULL);
|
||||
if (host_err < 0)
|
||||
goto out_nfserr;
|
||||
|
||||
if (EX_ISSYNC(fhp->fh_export)) {
|
||||
|
|
@ -1350,7 +1358,7 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
*/
|
||||
set_attr:
|
||||
if ((iap->ia_valid &= ~(ATTR_UID|ATTR_GID)) != 0) {
|
||||
int err2 = nfsd_setattr(rqstp, resfhp, iap, 0, (time_t)0);
|
||||
__be32 err2 = nfsd_setattr(rqstp, resfhp, iap, 0, (time_t)0);
|
||||
if (err2)
|
||||
err = err2;
|
||||
}
|
||||
|
|
@ -1368,7 +1376,7 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
return err;
|
||||
|
||||
out_nfserr:
|
||||
err = nfserrno(err);
|
||||
err = nfserrno(host_err);
|
||||
goto out;
|
||||
}
|
||||
#endif /* CONFIG_NFSD_V3 */
|
||||
|
|
@ -1378,13 +1386,14 @@ nfsd_create_v3(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
* fits into the buffer. On return, it contains the true length.
|
||||
* N.B. After this call fhp needs an fh_put
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)
|
||||
{
|
||||
struct dentry *dentry;
|
||||
struct inode *inode;
|
||||
mm_segment_t oldfs;
|
||||
int err;
|
||||
__be32 err;
|
||||
int host_err;
|
||||
|
||||
err = fh_verify(rqstp, fhp, S_IFLNK, MAY_NOP);
|
||||
if (err)
|
||||
|
|
@ -1403,18 +1412,18 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)
|
|||
*/
|
||||
|
||||
oldfs = get_fs(); set_fs(KERNEL_DS);
|
||||
err = inode->i_op->readlink(dentry, buf, *lenp);
|
||||
host_err = inode->i_op->readlink(dentry, buf, *lenp);
|
||||
set_fs(oldfs);
|
||||
|
||||
if (err < 0)
|
||||
if (host_err < 0)
|
||||
goto out_nfserr;
|
||||
*lenp = err;
|
||||
*lenp = host_err;
|
||||
err = 0;
|
||||
out:
|
||||
return err;
|
||||
|
||||
out_nfserr:
|
||||
err = nfserrno(err);
|
||||
err = nfserrno(host_err);
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
|
@ -1422,7 +1431,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)
|
|||
* Create a symlink and look up its inode
|
||||
* N.B. After this call _both_ fhp and resfhp need an fh_put
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
||||
char *fname, int flen,
|
||||
char *path, int plen,
|
||||
|
|
@ -1430,7 +1439,8 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
struct iattr *iap)
|
||||
{
|
||||
struct dentry *dentry, *dnew;
|
||||
int err, cerr;
|
||||
__be32 err, cerr;
|
||||
int host_err;
|
||||
umode_t mode;
|
||||
|
||||
err = nfserr_noent;
|
||||
|
|
@ -1446,7 +1456,7 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
fh_lock(fhp);
|
||||
dentry = fhp->fh_dentry;
|
||||
dnew = lookup_one_len(fname, dentry, flen);
|
||||
err = PTR_ERR(dnew);
|
||||
host_err = PTR_ERR(dnew);
|
||||
if (IS_ERR(dnew))
|
||||
goto out_nfserr;
|
||||
|
||||
|
|
@ -1458,21 +1468,21 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
if (unlikely(path[plen] != 0)) {
|
||||
char *path_alloced = kmalloc(plen+1, GFP_KERNEL);
|
||||
if (path_alloced == NULL)
|
||||
err = -ENOMEM;
|
||||
host_err = -ENOMEM;
|
||||
else {
|
||||
strncpy(path_alloced, path, plen);
|
||||
path_alloced[plen] = 0;
|
||||
err = vfs_symlink(dentry->d_inode, dnew, path_alloced, mode);
|
||||
host_err = vfs_symlink(dentry->d_inode, dnew, path_alloced, mode);
|
||||
kfree(path_alloced);
|
||||
}
|
||||
} else
|
||||
err = vfs_symlink(dentry->d_inode, dnew, path, mode);
|
||||
host_err = vfs_symlink(dentry->d_inode, dnew, path, mode);
|
||||
|
||||
if (!err)
|
||||
if (!host_err) {
|
||||
if (EX_ISSYNC(fhp->fh_export))
|
||||
err = nfsd_sync_dir(dentry);
|
||||
if (err)
|
||||
err = nfserrno(err);
|
||||
host_err = nfsd_sync_dir(dentry);
|
||||
}
|
||||
err = nfserrno(host_err);
|
||||
fh_unlock(fhp);
|
||||
|
||||
cerr = fh_compose(resfhp, fhp->fh_export, dnew, fhp);
|
||||
|
|
@ -1482,7 +1492,7 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
return err;
|
||||
|
||||
out_nfserr:
|
||||
err = nfserrno(err);
|
||||
err = nfserrno(host_err);
|
||||
goto out;
|
||||
}
|
||||
|
||||
|
|
@ -1490,13 +1500,14 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
|
|||
* Create a hardlink
|
||||
* N.B. After this call _both_ ffhp and tfhp need an fh_put
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
|
||||
char *name, int len, struct svc_fh *tfhp)
|
||||
{
|
||||
struct dentry *ddir, *dnew, *dold;
|
||||
struct inode *dirp, *dest;
|
||||
int err;
|
||||
__be32 err;
|
||||
int host_err;
|
||||
|
||||
err = fh_verify(rqstp, ffhp, S_IFDIR, MAY_CREATE);
|
||||
if (err)
|
||||
|
|
@ -1517,24 +1528,25 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
|
|||
dirp = ddir->d_inode;
|
||||
|
||||
dnew = lookup_one_len(name, ddir, len);
|
||||
err = PTR_ERR(dnew);
|
||||
host_err = PTR_ERR(dnew);
|
||||
if (IS_ERR(dnew))
|
||||
goto out_nfserr;
|
||||
|
||||
dold = tfhp->fh_dentry;
|
||||
dest = dold->d_inode;
|
||||
|
||||
err = vfs_link(dold, dirp, dnew);
|
||||
if (!err) {
|
||||
host_err = vfs_link(dold, dirp, dnew);
|
||||
if (!host_err) {
|
||||
if (EX_ISSYNC(ffhp->fh_export)) {
|
||||
err = nfserrno(nfsd_sync_dir(ddir));
|
||||
write_inode_now(dest, 1);
|
||||
}
|
||||
err = 0;
|
||||
} else {
|
||||
if (err == -EXDEV && rqstp->rq_vers == 2)
|
||||
if (host_err == -EXDEV && rqstp->rq_vers == 2)
|
||||
err = nfserr_acces;
|
||||
else
|
||||
err = nfserrno(err);
|
||||
err = nfserrno(host_err);
|
||||
}
|
||||
|
||||
dput(dnew);
|
||||
|
|
@ -1544,7 +1556,7 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
|
|||
return err;
|
||||
|
||||
out_nfserr:
|
||||
err = nfserrno(err);
|
||||
err = nfserrno(host_err);
|
||||
goto out_unlock;
|
||||
}
|
||||
|
||||
|
|
@ -1552,13 +1564,14 @@ nfsd_link(struct svc_rqst *rqstp, struct svc_fh *ffhp,
|
|||
* Rename a file
|
||||
* N.B. After this call _both_ ffhp and tfhp need an fh_put
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
|
||||
struct svc_fh *tfhp, char *tname, int tlen)
|
||||
{
|
||||
struct dentry *fdentry, *tdentry, *odentry, *ndentry, *trap;
|
||||
struct inode *fdir, *tdir;
|
||||
int err;
|
||||
__be32 err;
|
||||
int host_err;
|
||||
|
||||
err = fh_verify(rqstp, ffhp, S_IFDIR, MAY_REMOVE);
|
||||
if (err)
|
||||
|
|
@ -1589,22 +1602,22 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
|
|||
fill_pre_wcc(tfhp);
|
||||
|
||||
odentry = lookup_one_len(fname, fdentry, flen);
|
||||
err = PTR_ERR(odentry);
|
||||
host_err = PTR_ERR(odentry);
|
||||
if (IS_ERR(odentry))
|
||||
goto out_nfserr;
|
||||
|
||||
err = -ENOENT;
|
||||
host_err = -ENOENT;
|
||||
if (!odentry->d_inode)
|
||||
goto out_dput_old;
|
||||
err = -EINVAL;
|
||||
host_err = -EINVAL;
|
||||
if (odentry == trap)
|
||||
goto out_dput_old;
|
||||
|
||||
ndentry = lookup_one_len(tname, tdentry, tlen);
|
||||
err = PTR_ERR(ndentry);
|
||||
host_err = PTR_ERR(ndentry);
|
||||
if (IS_ERR(ndentry))
|
||||
goto out_dput_old;
|
||||
err = -ENOTEMPTY;
|
||||
host_err = -ENOTEMPTY;
|
||||
if (ndentry == trap)
|
||||
goto out_dput_new;
|
||||
|
||||
|
|
@ -1612,14 +1625,14 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
|
|||
if ((ffhp->fh_export->ex_flags & NFSEXP_MSNFS) &&
|
||||
((atomic_read(&odentry->d_count) > 1)
|
||||
|| (atomic_read(&ndentry->d_count) > 1))) {
|
||||
err = -EPERM;
|
||||
host_err = -EPERM;
|
||||
} else
|
||||
#endif
|
||||
err = vfs_rename(fdir, odentry, tdir, ndentry);
|
||||
if (!err && EX_ISSYNC(tfhp->fh_export)) {
|
||||
err = nfsd_sync_dir(tdentry);
|
||||
if (!err)
|
||||
err = nfsd_sync_dir(fdentry);
|
||||
host_err = vfs_rename(fdir, odentry, tdir, ndentry);
|
||||
if (!host_err && EX_ISSYNC(tfhp->fh_export)) {
|
||||
host_err = nfsd_sync_dir(tdentry);
|
||||
if (!host_err)
|
||||
host_err = nfsd_sync_dir(fdentry);
|
||||
}
|
||||
|
||||
out_dput_new:
|
||||
|
|
@ -1627,8 +1640,7 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
|
|||
out_dput_old:
|
||||
dput(odentry);
|
||||
out_nfserr:
|
||||
if (err)
|
||||
err = nfserrno(err);
|
||||
err = nfserrno(host_err);
|
||||
|
||||
/* we cannot reply on fh_unlock on the two filehandles,
|
||||
* as that would do the wrong thing if the two directories
|
||||
|
|
@ -1647,13 +1659,14 @@ nfsd_rename(struct svc_rqst *rqstp, struct svc_fh *ffhp, char *fname, int flen,
|
|||
* Unlink a file or directory
|
||||
* N.B. After this call fhp needs an fh_put
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
|
||||
char *fname, int flen)
|
||||
{
|
||||
struct dentry *dentry, *rdentry;
|
||||
struct inode *dirp;
|
||||
int err;
|
||||
__be32 err;
|
||||
int host_err;
|
||||
|
||||
err = nfserr_acces;
|
||||
if (!flen || isdotent(fname, flen))
|
||||
|
|
@ -1667,7 +1680,7 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
|
|||
dirp = dentry->d_inode;
|
||||
|
||||
rdentry = lookup_one_len(fname, dentry, flen);
|
||||
err = PTR_ERR(rdentry);
|
||||
host_err = PTR_ERR(rdentry);
|
||||
if (IS_ERR(rdentry))
|
||||
goto out_nfserr;
|
||||
|
||||
|
|
@ -1684,22 +1697,23 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
|
|||
#ifdef MSNFS
|
||||
if ((fhp->fh_export->ex_flags & NFSEXP_MSNFS) &&
|
||||
(atomic_read(&rdentry->d_count) > 1)) {
|
||||
err = -EPERM;
|
||||
host_err = -EPERM;
|
||||
} else
|
||||
#endif
|
||||
err = vfs_unlink(dirp, rdentry);
|
||||
host_err = vfs_unlink(dirp, rdentry);
|
||||
} else { /* It's RMDIR */
|
||||
err = vfs_rmdir(dirp, rdentry);
|
||||
host_err = vfs_rmdir(dirp, rdentry);
|
||||
}
|
||||
|
||||
dput(rdentry);
|
||||
|
||||
if (err == 0 &&
|
||||
EX_ISSYNC(fhp->fh_export))
|
||||
err = nfsd_sync_dir(dentry);
|
||||
if (host_err)
|
||||
goto out_nfserr;
|
||||
if (EX_ISSYNC(fhp->fh_export))
|
||||
host_err = nfsd_sync_dir(dentry);
|
||||
|
||||
out_nfserr:
|
||||
err = nfserrno(err);
|
||||
err = nfserrno(host_err);
|
||||
out:
|
||||
return err;
|
||||
}
|
||||
|
|
@ -1708,11 +1722,12 @@ nfsd_unlink(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
|
|||
* Read entries from a directory.
|
||||
* The NFSv3/4 verifier we ignore for now.
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
|
||||
struct readdir_cd *cdp, encode_dent_fn func)
|
||||
{
|
||||
int err;
|
||||
__be32 err;
|
||||
int host_err;
|
||||
struct file *file;
|
||||
loff_t offset = *offsetp;
|
||||
|
||||
|
|
@ -1734,10 +1749,10 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
|
|||
|
||||
do {
|
||||
cdp->err = nfserr_eof; /* will be cleared on successful read */
|
||||
err = vfs_readdir(file, (filldir_t) func, cdp);
|
||||
} while (err >=0 && cdp->err == nfs_ok);
|
||||
if (err)
|
||||
err = nfserrno(err);
|
||||
host_err = vfs_readdir(file, (filldir_t) func, cdp);
|
||||
} while (host_err >=0 && cdp->err == nfs_ok);
|
||||
if (host_err)
|
||||
err = nfserrno(host_err);
|
||||
else
|
||||
err = cdp->err;
|
||||
*offsetp = vfs_llseek(file, 0, 1);
|
||||
|
|
@ -1754,10 +1769,10 @@ nfsd_readdir(struct svc_rqst *rqstp, struct svc_fh *fhp, loff_t *offsetp,
|
|||
* Get file system stats
|
||||
* N.B. After this call fhp needs an fh_put
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat)
|
||||
{
|
||||
int err = fh_verify(rqstp, fhp, 0, MAY_NOP);
|
||||
__be32 err = fh_verify(rqstp, fhp, 0, MAY_NOP);
|
||||
if (!err && vfs_statfs(fhp->fh_dentry,stat))
|
||||
err = nfserr_io;
|
||||
return err;
|
||||
|
|
@ -1766,7 +1781,7 @@ nfsd_statfs(struct svc_rqst *rqstp, struct svc_fh *fhp, struct kstatfs *stat)
|
|||
/*
|
||||
* Check for a user's access permissions to this inode.
|
||||
*/
|
||||
int
|
||||
__be32
|
||||
nfsd_permission(struct svc_export *exp, struct dentry *dentry, int acc)
|
||||
{
|
||||
struct inode *inode = dentry->d_inode;
|
||||
|
|
|
|||
|
|
@ -72,57 +72,57 @@ int nfsd_racache_init(int);
|
|||
void nfsd_racache_shutdown(void);
|
||||
int nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
|
||||
struct svc_export **expp);
|
||||
int nfsd_lookup(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_lookup(struct svc_rqst *, struct svc_fh *,
|
||||
const char *, int, struct svc_fh *);
|
||||
int nfsd_setattr(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_setattr(struct svc_rqst *, struct svc_fh *,
|
||||
struct iattr *, int, time_t);
|
||||
#ifdef CONFIG_NFSD_V4
|
||||
int nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *,
|
||||
struct nfs4_acl *);
|
||||
int nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **);
|
||||
#endif /* CONFIG_NFSD_V4 */
|
||||
int nfsd_create(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_create(struct svc_rqst *, struct svc_fh *,
|
||||
char *name, int len, struct iattr *attrs,
|
||||
int type, dev_t rdev, struct svc_fh *res);
|
||||
#ifdef CONFIG_NFSD_V3
|
||||
int nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
|
||||
int nfsd_create_v3(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);
|
||||
__be32 nfsd_create_v3(struct svc_rqst *, struct svc_fh *,
|
||||
char *name, int len, struct iattr *attrs,
|
||||
struct svc_fh *res, int createmode,
|
||||
u32 *verifier, int *truncp);
|
||||
int nfsd_commit(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_commit(struct svc_rqst *, struct svc_fh *,
|
||||
loff_t, unsigned long);
|
||||
#endif /* CONFIG_NFSD_V3 */
|
||||
int nfsd_open(struct svc_rqst *, struct svc_fh *, int,
|
||||
__be32 nfsd_open(struct svc_rqst *, struct svc_fh *, int,
|
||||
int, struct file **);
|
||||
void nfsd_close(struct file *);
|
||||
int nfsd_read(struct svc_rqst *, struct svc_fh *, struct file *,
|
||||
__be32 nfsd_read(struct svc_rqst *, struct svc_fh *, struct file *,
|
||||
loff_t, struct kvec *, int, unsigned long *);
|
||||
int nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
|
||||
__be32 nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,
|
||||
loff_t, struct kvec *,int, unsigned long, int *);
|
||||
int nfsd_readlink(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_readlink(struct svc_rqst *, struct svc_fh *,
|
||||
char *, int *);
|
||||
int nfsd_symlink(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_symlink(struct svc_rqst *, struct svc_fh *,
|
||||
char *name, int len, char *path, int plen,
|
||||
struct svc_fh *res, struct iattr *);
|
||||
int nfsd_link(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_link(struct svc_rqst *, struct svc_fh *,
|
||||
char *, int, struct svc_fh *);
|
||||
int nfsd_rename(struct svc_rqst *,
|
||||
__be32 nfsd_rename(struct svc_rqst *,
|
||||
struct svc_fh *, char *, int,
|
||||
struct svc_fh *, char *, int);
|
||||
int nfsd_remove(struct svc_rqst *,
|
||||
__be32 nfsd_remove(struct svc_rqst *,
|
||||
struct svc_fh *, char *, int);
|
||||
int nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
|
||||
__be32 nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,
|
||||
char *name, int len);
|
||||
int nfsd_truncate(struct svc_rqst *, struct svc_fh *,
|
||||
unsigned long size);
|
||||
int nfsd_readdir(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_readdir(struct svc_rqst *, struct svc_fh *,
|
||||
loff_t *, struct readdir_cd *, encode_dent_fn);
|
||||
int nfsd_statfs(struct svc_rqst *, struct svc_fh *,
|
||||
__be32 nfsd_statfs(struct svc_rqst *, struct svc_fh *,
|
||||
struct kstatfs *);
|
||||
|
||||
int nfsd_notify_change(struct inode *, struct iattr *);
|
||||
int nfsd_permission(struct svc_export *, struct dentry *, int);
|
||||
__be32 nfsd_permission(struct svc_export *, struct dentry *, int);
|
||||
int nfsd_sync_dir(struct dentry *dp);
|
||||
|
||||
#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user