diff options
author | Stephen Rothwell <sfr@canb.auug.org.au> | 2017-02-17 09:39:23 +1100 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2017-02-17 09:39:23 +1100 |
commit | 3b21b60f7123624541347b9754cbe834a701241f (patch) | |
tree | edf6eff16ccef15e225720f486a16997f8171f36 /fs | |
parent | 21ec33c66777f045c5475a4cb6dde5608f3f7db8 (diff) | |
parent | 59479ae85e43a364d3380f82b1ddd8d04d13bd31 (diff) |
Merge remote-tracking branch 'vfs/for-next'
Diffstat (limited to 'fs')
-rw-r--r-- | fs/afs/rxrpc.c | 15 | ||||
-rw-r--r-- | fs/ncpfs/sock.c | 111 | ||||
-rw-r--r-- | fs/splice.c | 22 |
3 files changed, 61 insertions, 87 deletions
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index 25f05a8d21b1..bfba8f0c3d43 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -249,8 +249,7 @@ void afs_flat_call_destructor(struct afs_call *call) /* * attach the data from a bunch of pages on an inode to a call */ -static int afs_send_pages(struct afs_call *call, struct msghdr *msg, - struct kvec *iov) +static int afs_send_pages(struct afs_call *call, struct msghdr *msg) { struct page *pages[8]; unsigned count, n, loop, offset, to; @@ -273,20 +272,21 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg, loop = 0; do { + struct bio_vec bvec = {.bv_page = pages[loop], + .bv_offset = offset}; msg->msg_flags = 0; to = PAGE_SIZE; if (first + loop >= last) to = call->last_to; else msg->msg_flags = MSG_MORE; - iov->iov_base = kmap(pages[loop]) + offset; - iov->iov_len = to - offset; + bvec.bv_len = to - offset; offset = 0; _debug("- range %u-%u%s", offset, to, msg->msg_flags ? " [more]" : ""); - iov_iter_kvec(&msg->msg_iter, WRITE | ITER_KVEC, - iov, 1, to - offset); + iov_iter_bvec(&msg->msg_iter, WRITE | ITER_BVEC, + &bvec, 1, to - offset); /* have to change the state *before* sending the last * packet as RxRPC might give us the reply before it @@ -295,7 +295,6 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg, call->state = AFS_CALL_AWAIT_REPLY; ret = rxrpc_kernel_send_data(afs_socket, call->rxcall, msg, to - offset); - kunmap(pages[loop]); if (ret < 0) break; } while (++loop < count); @@ -379,7 +378,7 @@ int afs_make_call(struct in_addr *addr, struct afs_call *call, gfp_t gfp, goto error_do_abort; if (call->send_pages) { - ret = afs_send_pages(call, &msg, iov); + ret = afs_send_pages(call, &msg); if (ret < 0) goto error_do_abort; } diff --git a/fs/ncpfs/sock.c b/fs/ncpfs/sock.c index f32f272ee501..f013c92bb5d8 100644 --- a/fs/ncpfs/sock.c +++ b/fs/ncpfs/sock.c @@ -40,19 +40,12 @@ static int _recv(struct socket *sock, void *buf, int size, unsigned flags) return kernel_recvmsg(sock, &msg, &iov, 1, size, flags); } -static inline int do_send(struct socket *sock, struct kvec *vec, int count, - int len, unsigned flags) -{ - struct msghdr msg = { .msg_flags = flags }; - return kernel_sendmsg(sock, &msg, vec, count, len); -} - static int _send(struct socket *sock, const void *buff, int len) { - struct kvec vec; - vec.iov_base = (void *) buff; - vec.iov_len = len; - return do_send(sock, &vec, 1, len, 0); + struct msghdr msg = { .msg_flags = 0 }; + struct kvec vec = {.iov_base = (void *)buff, .iov_len = len}; + iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, &vec, 1, len); + return sock_sendmsg(sock, &msg); } struct ncp_request_reply { @@ -63,9 +56,7 @@ struct ncp_request_reply { size_t datalen; int result; enum { RQ_DONE, RQ_INPROGRESS, RQ_QUEUED, RQ_IDLE, RQ_ABANDONED } status; - struct kvec* tx_ciov; - size_t tx_totallen; - size_t tx_iovlen; + struct iov_iter from; struct kvec tx_iov[3]; u_int16_t tx_type; u_int32_t sign[6]; @@ -205,28 +196,22 @@ static inline void __ncptcp_abort(struct ncp_server *server) static int ncpdgram_send(struct socket *sock, struct ncp_request_reply *req) { - struct kvec vec[3]; - /* sock_sendmsg updates iov pointers for us :-( */ - memcpy(vec, req->tx_ciov, req->tx_iovlen * sizeof(vec[0])); - return do_send(sock, vec, req->tx_iovlen, - req->tx_totallen, MSG_DONTWAIT); + struct msghdr msg = { .msg_iter = req->from, .msg_flags = MSG_DONTWAIT }; + return sock_sendmsg(sock, &msg); } static void __ncptcp_try_send(struct ncp_server *server) { struct ncp_request_reply *rq; - struct kvec *iov; - struct kvec iovc[3]; + struct msghdr msg = { .msg_flags = MSG_NOSIGNAL | MSG_DONTWAIT }; int result; rq = server->tx.creq; if (!rq) return; - /* sock_sendmsg updates iov pointers for us :-( */ - memcpy(iovc, rq->tx_ciov, rq->tx_iovlen * sizeof(iov[0])); - result = do_send(server->ncp_sock, iovc, rq->tx_iovlen, - rq->tx_totallen, MSG_NOSIGNAL | MSG_DONTWAIT); + msg.msg_iter = rq->from; + result = sock_sendmsg(server->ncp_sock, &msg); if (result == -EAGAIN) return; @@ -236,21 +221,12 @@ static void __ncptcp_try_send(struct ncp_server *server) __ncp_abort_request(server, rq, result); return; } - if (result >= rq->tx_totallen) { + if (!msg_data_left(&msg)) { server->rcv.creq = rq; server->tx.creq = NULL; return; } - rq->tx_totallen -= result; - iov = rq->tx_ciov; - while (iov->iov_len <= result) { - result -= iov->iov_len; - iov++; - rq->tx_iovlen--; - } - iov->iov_base += result; - iov->iov_len -= result; - rq->tx_ciov = iov; + rq->from = msg.msg_iter; } static inline void ncp_init_header(struct ncp_server *server, struct ncp_request_reply *req, struct ncp_request_header *h) @@ -263,22 +239,21 @@ static inline void ncp_init_header(struct ncp_server *server, struct ncp_request static void ncpdgram_start_request(struct ncp_server *server, struct ncp_request_reply *req) { - size_t signlen; - struct ncp_request_header* h; + size_t signlen, len = req->tx_iov[1].iov_len; + struct ncp_request_header *h = req->tx_iov[1].iov_base; - req->tx_ciov = req->tx_iov + 1; - - h = req->tx_iov[1].iov_base; ncp_init_header(server, req, h); - signlen = sign_packet(server, req->tx_iov[1].iov_base + sizeof(struct ncp_request_header) - 1, - req->tx_iov[1].iov_len - sizeof(struct ncp_request_header) + 1, - cpu_to_le32(req->tx_totallen), req->sign); + signlen = sign_packet(server, + req->tx_iov[1].iov_base + sizeof(struct ncp_request_header) - 1, + len - sizeof(struct ncp_request_header) + 1, + cpu_to_le32(len), req->sign); if (signlen) { - req->tx_ciov[1].iov_base = req->sign; - req->tx_ciov[1].iov_len = signlen; - req->tx_iovlen += 1; - req->tx_totallen += signlen; + /* NCP over UDP appends signature */ + req->tx_iov[2].iov_base = req->sign; + req->tx_iov[2].iov_len = signlen; } + iov_iter_kvec(&req->from, WRITE | ITER_KVEC, + req->tx_iov + 1, signlen ? 2 : 1, len + signlen); server->rcv.creq = req; server->timeout_last = server->m.time_out; server->timeout_retries = server->m.retry_count; @@ -292,24 +267,23 @@ static void ncpdgram_start_request(struct ncp_server *server, struct ncp_request static void ncptcp_start_request(struct ncp_server *server, struct ncp_request_reply *req) { - size_t signlen; - struct ncp_request_header* h; + size_t signlen, len = req->tx_iov[1].iov_len; + struct ncp_request_header *h = req->tx_iov[1].iov_base; - req->tx_ciov = req->tx_iov; - h = req->tx_iov[1].iov_base; ncp_init_header(server, req, h); signlen = sign_packet(server, req->tx_iov[1].iov_base + sizeof(struct ncp_request_header) - 1, - req->tx_iov[1].iov_len - sizeof(struct ncp_request_header) + 1, - cpu_to_be32(req->tx_totallen + 24), req->sign + 4) + 16; + len - sizeof(struct ncp_request_header) + 1, + cpu_to_be32(len + 24), req->sign + 4) + 16; req->sign[0] = htonl(NCP_TCP_XMIT_MAGIC); - req->sign[1] = htonl(req->tx_totallen + signlen); + req->sign[1] = htonl(len + signlen); req->sign[2] = htonl(NCP_TCP_XMIT_VERSION); req->sign[3] = htonl(req->datalen + 8); + /* NCP over TCP prepends signature */ req->tx_iov[0].iov_base = req->sign; req->tx_iov[0].iov_len = signlen; - req->tx_iovlen += 1; - req->tx_totallen += signlen; + iov_iter_kvec(&req->from, WRITE | ITER_KVEC, + req->tx_iov, 2, len + signlen); server->tx.creq = req; __ncptcp_try_send(server); @@ -364,18 +338,17 @@ static void __ncp_next_request(struct ncp_server *server) static void info_server(struct ncp_server *server, unsigned int id, const void * data, size_t len) { if (server->info_sock) { - struct kvec iov[2]; - __be32 hdr[2]; - - hdr[0] = cpu_to_be32(len + 8); - hdr[1] = cpu_to_be32(id); - - iov[0].iov_base = hdr; - iov[0].iov_len = 8; - iov[1].iov_base = (void *) data; - iov[1].iov_len = len; + struct msghdr msg = { .msg_flags = MSG_NOSIGNAL }; + __be32 hdr[2] = {cpu_to_be32(len + 8), cpu_to_be32(id)}; + struct kvec iov[2] = { + {.iov_base = hdr, .iov_len = 8}, + {.iov_base = (void *)data, .iov_len = len}, + }; + + iov_iter_kvec(&msg.msg_iter, ITER_KVEC | WRITE, + iov, 2, len + 8); - do_send(server->info_sock, iov, 2, len + 8, MSG_NOSIGNAL); + sock_sendmsg(server->info_sock, &msg); } } @@ -711,8 +684,6 @@ static int do_ncp_rpc_call(struct ncp_server *server, int size, req->datalen = max_reply_size; req->tx_iov[1].iov_base = server->packet; req->tx_iov[1].iov_len = size; - req->tx_iovlen = 1; - req->tx_totallen = size; req->tx_type = *(u_int16_t*)server->packet; result = ncp_add_request(server, req); diff --git a/fs/splice.c b/fs/splice.c index 4ef78aa8ef61..7d0c0f1a9657 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -245,11 +245,6 @@ ssize_t add_to_pipe(struct pipe_inode_info *pipe, struct pipe_buffer *buf) } EXPORT_SYMBOL(add_to_pipe); -void spd_release_page(struct splice_pipe_desc *spd, unsigned int i) -{ - put_page(spd->pages[i]); -} - /* * Check if we need to grow the arrays holding pages and partial page * descriptions. @@ -306,6 +301,8 @@ ssize_t generic_file_splice_read(struct file *in, loff_t *ppos, iov_iter_pipe(&to, ITER_PIPE | READ, pipe, len); idx = to.idx; init_sync_kiocb(&kiocb, in); + if (flags & SPLICE_F_NONBLOCK) + kiocb.ki_flags |= IOCB_NDELAY; kiocb.ki_pos = *ppos; ret = in->f_op->read_iter(&kiocb, &to); if (ret > 0) { @@ -391,7 +388,7 @@ static ssize_t default_file_splice_read(struct file *in, loff_t *ppos, struct iov_iter to; struct page **pages; unsigned int nr_pages; - size_t offset, dummy, copied = 0; + size_t offset, base, copied = 0; ssize_t res; int i; @@ -406,12 +403,11 @@ static ssize_t default_file_splice_read(struct file *in, loff_t *ppos, iov_iter_pipe(&to, ITER_PIPE | READ, pipe, len + offset); - res = iov_iter_get_pages_alloc(&to, &pages, len + offset, &dummy); + res = iov_iter_get_pages_alloc(&to, &pages, len + offset, &base); if (res <= 0) return -ENOMEM; - BUG_ON(dummy); - nr_pages = DIV_ROUND_UP(res, PAGE_SIZE); + nr_pages = DIV_ROUND_UP(res + base, PAGE_SIZE); vec = __vec; if (nr_pages > PIPE_DEF_BUFFERS) { @@ -1357,6 +1353,8 @@ SYSCALL_DEFINE4(vmsplice, int, fd, const struct iovec __user *, iov, struct fd f; long error; + if (unlikely(flags & ~SPLICE_F_ALL)) + return -EINVAL; if (unlikely(nr_segs > UIO_MAXIOV)) return -EINVAL; else if (unlikely(!nr_segs)) @@ -1407,6 +1405,9 @@ SYSCALL_DEFINE6(splice, int, fd_in, loff_t __user *, off_in, if (unlikely(!len)) return 0; + if (unlikely(flags & ~SPLICE_F_ALL)) + return -EINVAL; + error = -EBADF; in = fdget(fd_in); if (in.file) { @@ -1735,6 +1736,9 @@ SYSCALL_DEFINE4(tee, int, fdin, int, fdout, size_t, len, unsigned int, flags) struct fd in; int error; + if (unlikely(flags & ~SPLICE_F_ALL)) + return -EINVAL; + if (unlikely(!len)) return 0; |