diff options
Diffstat (limited to 'libs/nixio/src/splice.c')
| -rw-r--r-- | libs/nixio/src/splice.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/libs/nixio/src/splice.c b/libs/nixio/src/splice.c deleted file mode 100644 index db63ea9a89..0000000000 --- a/libs/nixio/src/splice.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - * nixio - Linux I/O library for lua - * - * Copyright (C) 2009 Steven Barth <steven@midlink.org> - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifdef __linux__ -#define _GNU_SOURCE -#endif - -#include "nixio.h" -#include <fcntl.h> -#include <string.h> -#include <errno.h> -#include <unistd.h> -#include <sys/param.h> - - -#ifndef __WINNT__ - -#ifndef BSD -#include <sys/sendfile.h> -#else -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/uio.h> -#endif - -#ifdef _GNU_SOURCE -#ifdef SPLICE_F_MOVE - -/* guess what sucks... */ -#ifdef __UCLIBC__ -#include <unistd.h> -#include <sys/syscall.h> - -ssize_t splice(int __fdin, __off64_t *__offin, int __fdout, - __off64_t *__offout, size_t __len, unsigned int __flags) { -#ifdef __NR_splice - return syscall(__NR_splice, __fdin, __offin, __fdout, __offout, __len, __flags); -#else - (void)__fdin; - (void)__offin; - (void)__fdout; - (void)__offout; - (void)__len; - (void)__flags; - errno = ENOSYS; - return -1; -#endif -} - -#undef SPLICE_F_MOVE -#undef SPLICE_F_NONBLOCK -#undef SPLICE_F_MORE - -#define SPLICE_F_MOVE 1 -#define SPLICE_F_NONBLOCK 2 -#define SPLICE_F_MORE 4 - -#endif /* __UCLIBC__ */ - -/** - * splice(fd_in, fd_out, length, flags) - */ -static int nixio_splice(lua_State *L) { - int fd_in = nixio__checkfd(L, 1); - int fd_out = nixio__checkfd(L, 2); - size_t len = luaL_checkinteger(L, 3); - int flags = luaL_optinteger(L, 4, 0); - long spliced; - - do { - spliced = splice(fd_in, NULL, fd_out, NULL, len, flags); - } while (spliced == -1 && errno == EINTR); - - if (spliced < 0) { - return nixio__perror(L); - } - - lua_pushinteger(L, spliced); - return 1; -} - -/** - * Translate splice flags to integer - */ -static int nixio_splice_flags(lua_State *L) { - const int j = lua_gettop(L); - int flags = 0; - for (int i=1; i<=j; i++) { - const char *flag = luaL_checkstring(L, i); - if (!strcmp(flag, "move")) { - flags |= SPLICE_F_MOVE; - } else if (!strcmp(flag, "nonblock")) { - flags |= SPLICE_F_NONBLOCK; - } else if (!strcmp(flag, "more")) { - flags |= SPLICE_F_MORE; - } else { - return luaL_argerror(L, i, "supported values: " - "move, nonblock, more"); - } - } - lua_pushinteger(L, flags); - - return 1; -} - -#endif /* SPLICE_F_MOVE */ -#endif /* _GNU_SOURCE */ - -/** - * sendfile(outfd, infd, length) - */ -static int nixio_sendfile(lua_State *L) { - int sock = nixio__checksockfd(L); - int infd = nixio__checkfd(L, 2); - size_t len = luaL_checkinteger(L, 3); - off_t spliced; - -#ifndef BSD - do { - spliced = sendfile(sock, infd, NULL, len); - } while (spliced == -1 && errno == EINTR); - - if (spliced == -1) { - return nixio__perror(L); - } -#else - int r; - const off_t offset = lseek(infd, 0, SEEK_CUR); - - do { -#ifdef __DARWIN__ - r = sendfile(infd, sock, offset, (off_t *)&len, NULL, 0); - spliced = r; -#else - r = sendfile(infd, sock, offset, len, NULL, &spliced, 0); -#endif - } while (r == -1 && errno == EINTR); - - if (r == -1) { - return nixio__perror(L); - } -#endif - - lua_pushinteger(L, spliced); - return 1; -} - -/* module table */ -static const luaL_reg R[] = { -#ifdef _GNU_SOURCE -#ifdef SPLICE_F_MOVE - {"splice", nixio_splice}, - {"splice_flags", nixio_splice_flags}, -#endif -#endif - {"sendfile", nixio_sendfile}, - {NULL, NULL} -}; - - -void nixio_open_splice(lua_State *L) { - luaL_register(L, NULL, R); -} - -#else /* __WINNT__ */ - -void nixio_open_splice(lua_State *L) { -} - -#endif /* !__WINNT__ */ |