diff options
Diffstat (limited to 'fs/nfsd/vfs.c')
| -rw-r--r-- | fs/nfsd/vfs.c | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index a41302a0065..017d3cb5e99 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -459,158 +459,7 @@ out: return err; } -#if defined(CONFIG_NFSD_V2_ACL) || \ - defined(CONFIG_NFSD_V3_ACL) || \ - defined(CONFIG_NFSD_V4) -static ssize_t nfsd_getxattr(struct dentry *dentry, char *key, void **buf) -{ - ssize_t buflen; - ssize_t ret; - - buflen = vfs_getxattr(dentry, key, NULL, 0); - if (buflen <= 0) - return buflen; - - *buf = kmalloc(buflen, GFP_KERNEL); - if (!*buf) - return -ENOMEM; - - ret = vfs_getxattr(dentry, key, *buf, buflen); - if (ret < 0) - kfree(*buf); - return ret; -} -#endif - #if defined(CONFIG_NFSD_V4) -static int -set_nfsv4_acl_one(struct dentry *dentry, struct posix_acl *pacl, char *key) -{ - int len; - size_t buflen; - char *buf = NULL; - int error = 0; - - buflen = posix_acl_xattr_size(pacl->a_count); - buf = kmalloc(buflen, GFP_KERNEL); - error = -ENOMEM; - if (buf == NULL) - goto out; - - len = posix_acl_to_xattr(&init_user_ns, pacl, buf, buflen); - if (len < 0) { - error = len; - goto out; - } - - error = vfs_setxattr(dentry, key, buf, len, 0); -out: - kfree(buf); - return error; -} - -__be32 -nfsd4_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, - struct nfs4_acl *acl) -{ - __be32 error; - int host_error; - struct dentry *dentry; - struct inode *inode; - struct posix_acl *pacl = NULL, *dpacl = NULL; - unsigned int flags = 0; - - /* Get inode */ - error = fh_verify(rqstp, fhp, 0, NFSD_MAY_SATTR); - if (error) - return error; - - dentry = fhp->fh_dentry; - inode = dentry->d_inode; - if (S_ISDIR(inode->i_mode)) - flags = NFS4_ACL_DIR; - - host_error = nfs4_acl_nfsv4_to_posix(acl, &pacl, &dpacl, flags); - if (host_error == -EINVAL) { - return nfserr_attrnotsupp; - } else if (host_error < 0) - goto out_nfserr; - - host_error = set_nfsv4_acl_one(dentry, pacl, POSIX_ACL_XATTR_ACCESS); - if (host_error < 0) - goto out_release; - - if (S_ISDIR(inode->i_mode)) - host_error = set_nfsv4_acl_one(dentry, dpacl, POSIX_ACL_XATTR_DEFAULT); - -out_release: - posix_acl_release(pacl); - posix_acl_release(dpacl); -out_nfserr: - if (host_error == -EOPNOTSUPP) - return nfserr_attrnotsupp; - else - return nfserrno(host_error); -} - -static struct posix_acl * -_get_posix_acl(struct dentry *dentry, char *key) -{ - void *buf = NULL; - struct posix_acl *pacl = NULL; - int buflen; - - buflen = nfsd_getxattr(dentry, key, &buf); - if (!buflen) - buflen = -ENODATA; - if (buflen <= 0) - return ERR_PTR(buflen); - - pacl = posix_acl_from_xattr(&init_user_ns, buf, buflen); - kfree(buf); - return pacl; -} - -int -nfsd4_get_nfs4_acl(struct svc_rqst *rqstp, struct dentry *dentry, struct nfs4_acl **acl) -{ - struct inode *inode = dentry->d_inode; - int error = 0; - struct posix_acl *pacl = NULL, *dpacl = NULL; - unsigned int flags = 0; - - pacl = _get_posix_acl(dentry, POSIX_ACL_XATTR_ACCESS); - if (IS_ERR(pacl) && PTR_ERR(pacl) == -ENODATA) - pacl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL); - if (IS_ERR(pacl)) { - error = PTR_ERR(pacl); - pacl = NULL; - goto out; - } - - if (S_ISDIR(inode->i_mode)) { - dpacl = _get_posix_acl(dentry, POSIX_ACL_XATTR_DEFAULT); - if (IS_ERR(dpacl) && PTR_ERR(dpacl) == -ENODATA) - dpacl = NULL; - else if (IS_ERR(dpacl)) { - error = PTR_ERR(dpacl); - dpacl = NULL; - goto out; - } - flags = NFS4_ACL_DIR; - } - - *acl = nfs4_acl_posix_to_nfsv4(pacl, dpacl, flags); - if (IS_ERR(*acl)) { - error = PTR_ERR(*acl); - *acl = NULL; - } - out: - posix_acl_release(pacl); - posix_acl_release(dpacl); - return error; -} - /* * NFS junction information is stored in an extended attribute. */ @@ -2258,93 +2107,3 @@ out_nomem: nfsd_racache_shutdown(); return -ENOMEM; } - -#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) -struct posix_acl * -nfsd_get_posix_acl(struct svc_fh *fhp, int type) -{ - struct inode *inode = fhp->fh_dentry->d_inode; - char *name; - void *value = NULL; - ssize_t size; - struct posix_acl *acl; - - if (!IS_POSIXACL(inode)) - return ERR_PTR(-EOPNOTSUPP); - - switch (type) { - case ACL_TYPE_ACCESS: - name = POSIX_ACL_XATTR_ACCESS; - break; - case ACL_TYPE_DEFAULT: - name = POSIX_ACL_XATTR_DEFAULT; - break; - default: - return ERR_PTR(-EOPNOTSUPP); - } - - size = nfsd_getxattr(fhp->fh_dentry, name, &value); - if (size < 0) - return ERR_PTR(size); - - acl = posix_acl_from_xattr(&init_user_ns, value, size); - kfree(value); - return acl; -} - -int -nfsd_set_posix_acl(struct svc_fh *fhp, int type, struct posix_acl *acl) -{ - struct inode *inode = fhp->fh_dentry->d_inode; - char *name; - void *value = NULL; - size_t size; - int error; - - if (!IS_POSIXACL(inode) || - !inode->i_op->setxattr || !inode->i_op->removexattr) - return -EOPNOTSUPP; - switch(type) { - case ACL_TYPE_ACCESS: - name = POSIX_ACL_XATTR_ACCESS; - break; - case ACL_TYPE_DEFAULT: - name = POSIX_ACL_XATTR_DEFAULT; - break; - default: - return -EOPNOTSUPP; - } - - if (acl && acl->a_count) { - size = posix_acl_xattr_size(acl->a_count); - value = kmalloc(size, GFP_KERNEL); - if (!value) - return -ENOMEM; - error = posix_acl_to_xattr(&init_user_ns, acl, value, size); - if (error < 0) - goto getout; - size = error; - } else - size = 0; - - error = fh_want_write(fhp); - if (error) - goto getout; - if (size) - error = vfs_setxattr(fhp->fh_dentry, name, value, size, 0); - else { - if (!S_ISDIR(inode->i_mode) && type == ACL_TYPE_DEFAULT) - error = 0; - else { - error = vfs_removexattr(fhp->fh_dentry, name); - if (error == -ENODATA) - error = 0; - } - } - fh_drop_write(fhp); - -getout: - kfree(value); - return error; -} -#endif /* defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) */ |