int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, mode_t mode) { struct posix_acl *dfacl, *acl; int error = 0; dfacl = nfs3_proc_getacl(dir, ACL_TYPE_DEFAULT); if (IS_ERR(dfacl)) { error = PTR_ERR(dfacl); return (error == -EOPNOTSUPP) ? 0 : error; } if (!dfacl) return 0; acl = posix_acl_clone(dfacl, GFP_KERNEL); error = -ENOMEM; if (!acl) goto out_release_dfacl; error = posix_acl_create_masq(acl, &mode); if (error < 0) goto out_release_acl; error = nfs3_proc_setacls(inode, acl, S_ISDIR(inode->i_mode) ? dfacl : NULL); out_release_acl: posix_acl_release(acl); out_release_dfacl: posix_acl_release(dfacl); return error; }
int nfs3_proc_setacl(struct inode *inode, int type, struct posix_acl *acl) { struct posix_acl *alloc = NULL, *dfacl = NULL; int status; if (S_ISDIR(inode->i_mode)) { switch(type) { case ACL_TYPE_ACCESS: alloc = dfacl = nfs3_proc_getacl(inode, ACL_TYPE_DEFAULT); if (IS_ERR(alloc)) goto fail; break; case ACL_TYPE_DEFAULT: dfacl = acl; alloc = acl = nfs3_proc_getacl(inode, ACL_TYPE_ACCESS); if (IS_ERR(alloc)) goto fail; break; default: return -EINVAL; } } else if (type != ACL_TYPE_ACCESS) return -EINVAL; if (acl == NULL) { alloc = acl = posix_acl_from_mode(inode->i_mode, GFP_KERNEL); if (IS_ERR(alloc)) goto fail; } status = nfs3_proc_setacls(inode, acl, dfacl); posix_acl_release(alloc); return status; fail: return PTR_ERR(alloc); }
static int nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) { struct nfs3_linkargs arg = { .fromfh = NFS_FH(inode), .tofh = NFS_FH(dir), .toname = name->name, .tolen = name->len }; struct nfs3_linkres res; struct rpc_message msg = { .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], .rpc_argp = &arg, .rpc_resp = &res, }; int status = -ENOMEM; dprintk("NFS call link %s\n", name->name); res.fattr = nfs_alloc_fattr(); res.dir_attr = nfs_alloc_fattr(); if (res.fattr == NULL || res.dir_attr == NULL) goto out; zql_control_test(NFS_SERVER(inode)); status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); nfs_post_op_update_inode(dir, res.dir_attr); nfs_post_op_update_inode(inode, res.fattr); out: nfs_free_fattr(res.dir_attr); nfs_free_fattr(res.fattr); dprintk("NFS reply link: %d\n", status); return status; } static int nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, unsigned int len, struct iattr *sattr) { struct nfs3_createdata *data; int status = -ENOMEM; if (len > NFS3_MAXPATHLEN) return -ENAMETOOLONG; dprintk("NFS call symlink %pd\n", dentry); data = nfs3_alloc_createdata(); if (data == NULL) goto out; data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK]; data->arg.symlink.fromfh = NFS_FH(dir); data->arg.symlink.fromname = dentry->d_name.name; data->arg.symlink.fromlen = dentry->d_name.len; data->arg.symlink.pages = &page; data->arg.symlink.pathlen = len; data->arg.symlink.sattr = sattr; zql_control_test(NFS_SERVER(dir)); status = nfs3_do_create(dir, dentry, data); nfs3_free_createdata(data); out: dprintk("NFS reply symlink: %d\n", status); return status; } static int nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) { struct posix_acl *default_acl, *acl; struct nfs3_createdata *data; int status = -ENOMEM; dprintk("NFS call mkdir %pd\n", dentry); data = nfs3_alloc_createdata(); if (data == NULL) goto out; status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl); if (status) goto out; data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; data->arg.mkdir.fh = NFS_FH(dir); data->arg.mkdir.name = dentry->d_name.name; data->arg.mkdir.len = dentry->d_name.len; data->arg.mkdir.sattr = sattr; zql_control_test(NFS_SERVER(dir)); status = nfs3_do_create(dir, dentry, data); if (status != 0) goto out_release_acls; status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl); out_release_acls: posix_acl_release(acl); posix_acl_release(default_acl); out: nfs3_free_createdata(data); dprintk("NFS reply mkdir: %d\n", status); return status; } static int nfs3_proc_rmdir(struct inode *dir, struct qstr *name) { struct nfs_fattr *dir_attr; struct nfs3_diropargs arg = { .fh = NFS_FH(dir), .name = name->name, .len = name->len }; struct rpc_message msg = { .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], .rpc_argp = &arg, }; int status = -ENOMEM; dprintk("NFS call rmdir %s\n", name->name); dir_attr = nfs_alloc_fattr(); if (dir_attr == NULL) goto out; msg.rpc_resp = dir_attr; zql_control_test(NFS_SERVER(dir)); status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); nfs_post_op_update_inode(dir, dir_attr); nfs_free_fattr(dir_attr); out: dprintk("NFS reply rmdir: %d\n", status); return status; } /* * The READDIR implementation is somewhat hackish - we pass the user buffer * to the encode function, which installs it in the receive iovec. * The decode function itself doesn't perform any decoding, it just makes * sure the reply is syntactically correct. * * Also note that this implementation handles both plain readdir and * readdirplus. */ static int nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, u64 cookie, struct page **pages, unsigned int count, int plus) { struct inode *dir = dentry->d_inode; __be32 *verf = NFS_I(dir)->cookieverf; struct nfs3_readdirargs arg = { .fh = NFS_FH(dir), .cookie = cookie, .verf = {verf[0], verf[1]}, .plus = plus, .count = count, .pages = pages }; struct nfs3_readdirres res = { .verf = verf, .plus = plus }; struct rpc_message msg = { .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], .rpc_argp = &arg, .rpc_resp = &res, .rpc_cred = cred }; int status = -ENOMEM; if (plus) msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; dprintk("NFS call readdir%s %d\n", plus? "plus" : "", (unsigned int) cookie); res.dir_attr = nfs_alloc_fattr(); if (res.dir_attr == NULL) goto out; zql_control_test(NFS_SERVER(dir)); status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); nfs_invalidate_atime(dir); nfs_refresh_inode(dir, res.dir_attr); nfs_free_fattr(res.dir_attr); out: dprintk("NFS reply readdir%s: %d\n", plus? "plus" : "", status); return status; } static int nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, dev_t rdev) { struct posix_acl *default_acl, *acl; struct nfs3_createdata *data; int status = -ENOMEM; dprintk("NFS call mknod %pd %u:%u\n", dentry, MAJOR(rdev), MINOR(rdev)); data = nfs3_alloc_createdata(); if (data == NULL) goto out; status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl); if (status) goto out; data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; data->arg.mknod.fh = NFS_FH(dir); data->arg.mknod.name = dentry->d_name.name; data->arg.mknod.len = dentry->d_name.len; data->arg.mknod.sattr = sattr; data->arg.mknod.rdev = rdev; switch (sattr->ia_mode & S_IFMT) { case S_IFBLK: data->arg.mknod.type = NF3BLK; break; case S_IFCHR: data->arg.mknod.type = NF3CHR; break; case S_IFIFO: data->arg.mknod.type = NF3FIFO; break; case S_IFSOCK: data->arg.mknod.type = NF3SOCK; break; default: status = -EINVAL; goto out; } zql_control_test(NFS_SERVER(dir)); status = nfs3_do_create(dir, dentry, data); if (status != 0) goto out_release_acls; status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl); out_release_acls: posix_acl_release(acl); posix_acl_release(default_acl); out: nfs3_free_createdata(data); dprintk("NFS reply mknod: %d\n", status); return status; } static int nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *stat) { struct rpc_message msg = { .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], .rpc_argp = fhandle, .rpc_resp = stat, }; int status; dprintk("NFS call fsstat\n"); nfs_fattr_init(stat->fattr); zql_control_test(server); status = rpc_call_sync(server->client, &msg, 0); dprintk("NFS reply fsstat: %d\n", status); return status; } static int do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle, struct nfs_fsinfo *info) { struct rpc_message msg = { .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], .rpc_argp = fhandle, .rpc_resp = info, }; int status; dprintk("NFS call fsinfo\n"); nfs_fattr_init(info->fattr); status = rpc_call_sync(client, &msg, 0); dprintk("NFS reply fsinfo: %d\n", status); return status; } /* * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via * nfs_create_server */ static int nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *info) { int status; zql_control_test(server); status = do_proc_fsinfo(server->client, fhandle, info); if (status && server->nfs_client->cl_rpcclient != server->client) status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info); return status; }
/* * Create a regular file. */ static int nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, int flags) { struct posix_acl *default_acl, *acl; struct nfs3_createdata *data; int status = -ENOMEM; dprintk("NFS call create %pd\n", dentry); data = nfs3_alloc_createdata(); if (data == NULL) goto out; data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE]; data->arg.create.fh = NFS_FH(dir); data->arg.create.name = dentry->d_name.name; data->arg.create.len = dentry->d_name.len; data->arg.create.sattr = sattr; data->arg.create.createmode = NFS3_CREATE_UNCHECKED; if (flags & O_EXCL) { data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE; data->arg.create.verifier[0] = cpu_to_be32(jiffies); data->arg.create.verifier[1] = cpu_to_be32(current->pid); } status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl); if (status) goto out; zql_control_test(NFS_SERVER(dir)); for (;;) { status = nfs3_do_create(dir, dentry, data); if (status != -ENOTSUPP) break; /* If the server doesn't support the exclusive creation * semantics, try again with simple 'guarded' mode. */ switch (data->arg.create.createmode) { case NFS3_CREATE_EXCLUSIVE: data->arg.create.createmode = NFS3_CREATE_GUARDED; break; case NFS3_CREATE_GUARDED: data->arg.create.createmode = NFS3_CREATE_UNCHECKED; break; case NFS3_CREATE_UNCHECKED: goto out; } nfs_fattr_init(data->res.dir_attr); nfs_fattr_init(data->res.fattr); } if (status != 0) goto out_release_acls; /* When we created the file with exclusive semantics, make * sure we set the attributes afterwards. */ if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) { dprintk("NFS call setattr (post-create)\n"); if (!(sattr->ia_valid & ATTR_ATIME_SET)) sattr->ia_valid |= ATTR_ATIME; if (!(sattr->ia_valid & ATTR_MTIME_SET)) sattr->ia_valid |= ATTR_MTIME; /* Note: we could use a guarded setattr here, but I'm * not sure this buys us anything (and I'd have * to revamp the NFSv3 XDR code) */ status = nfs3_proc_setattr(dentry, data->res.fattr, sattr); nfs_post_op_update_inode(dentry->d_inode, data->res.fattr); dprintk("NFS reply setattr (post-create): %d\n", status); if (status != 0) goto out_release_acls; } status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl); out_release_acls: posix_acl_release(acl); posix_acl_release(default_acl); out: nfs3_free_createdata(data); dprintk("NFS reply create: %d\n", status); return status; }