diff options
| -rw-r--r-- | include/io/channel-util.h | 52 | ||||
| -rw-r--r-- | io/Makefile.objs | 1 | ||||
| -rw-r--r-- | io/channel-util.c | 50 | ||||
| -rw-r--r-- | tests/test-io-channel-file.c | 22 | ||||
| -rw-r--r-- | tests/test-io-channel-socket.c | 21 |
5 files changed, 146 insertions, 0 deletions
diff --git a/include/io/channel-util.h b/include/io/channel-util.h new file mode 100644 index 0000000000..c93af82884 --- /dev/null +++ b/include/io/channel-util.h @@ -0,0 +1,52 @@ +/* + * QEMU I/O channels utility APIs + * + * Copyright (c) 2016 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#ifndef QIO_CHANNEL_UTIL_H__ +#define QIO_CHANNEL_UTIL_H__ + +#include "io/channel.h" + +/* + * This module provides helper functions that are useful when dealing + * with QIOChannel objects + */ + + +/** + * qio_channel_new_fd: + * @fd: the file descriptor + * @errp: pointer to a NULL-initialized error object + * + * Create a channel for performing I/O on the file + * descriptor @fd. The particular subclass of QIOChannel + * that is returned will depend on what underlying object + * the file descriptor is associated with. It may be either + * a QIOChannelSocket or a QIOChannelFile instance. Upon + * success, the returned QIOChannel instance will own + * the @fd file descriptor, and take responsibility for + * closing it when no longer required. On failure, the + * caller is responsible for closing @fd. + * + * Returns: the channel object, or NULL on error + */ +QIOChannel *qio_channel_new_fd(int fd, + Error **errp); + +#endif /* QIO_CHANNEL_UTIL_H__ */ diff --git a/io/Makefile.objs b/io/Makefile.objs index 0e3de31a5a..9d8337d89a 100644 --- a/io/Makefile.objs +++ b/io/Makefile.objs @@ -6,4 +6,5 @@ io-obj-y += channel-socket.o io-obj-y += channel-tls.o io-obj-y += channel-watch.o io-obj-y += channel-websock.o +io-obj-y += channel-util.o io-obj-y += task.o diff --git a/io/channel-util.c b/io/channel-util.c new file mode 100644 index 0000000000..f96907cb5c --- /dev/null +++ b/io/channel-util.c @@ -0,0 +1,50 @@ +/* + * QEMU I/O channels utility APIs + * + * Copyright (c) 2016 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#include "io/channel-util.h" +#include "io/channel-file.h" +#include "io/channel-socket.h" + + +static bool fd_is_socket(int fd) +{ + int optval; + socklen_t optlen; + optlen = sizeof(optval); + return qemu_getsockopt(fd, + SOL_SOCKET, + SO_TYPE, + (char *)&optval, + &optlen) == 0; +} + + +QIOChannel *qio_channel_new_fd(int fd, + Error **errp) +{ + QIOChannel *ioc; + + if (fd_is_socket(fd)) { + ioc = QIO_CHANNEL(qio_channel_socket_new_fd(fd, errp)); + } else { + ioc = QIO_CHANNEL(qio_channel_file_new_fd(fd)); + } + return ioc; +} diff --git a/tests/test-io-channel-file.c b/tests/test-io-channel-file.c index f276a32de0..45e699044c 100644 --- a/tests/test-io-channel-file.c +++ b/tests/test-io-channel-file.c @@ -19,6 +19,7 @@ */ #include "io/channel-file.h" +#include "io/channel-util.h" #include "io-channel-helpers.h" @@ -49,6 +50,26 @@ static void test_io_channel_file(void) } +static void test_io_channel_fd(void) +{ + QIOChannel *ioc; + int fd = -1; + +#define TEST_FILE "tests/test-io-channel-file.txt" + fd = open(TEST_FILE, O_CREAT | O_TRUNC | O_WRONLY, 0600); + g_assert_cmpint(fd, >, -1); + + ioc = qio_channel_new_fd(fd, &error_abort); + + g_assert_cmpstr(object_get_typename(OBJECT(ioc)), + ==, + TYPE_QIO_CHANNEL_FILE); + + unlink(TEST_FILE); + object_unref(OBJECT(ioc)); +} + + #ifndef _WIN32 static void test_io_channel_pipe(bool async) { @@ -92,6 +113,7 @@ int main(int argc, char **argv) g_test_init(&argc, &argv, NULL); g_test_add_func("/io/channel/file", test_io_channel_file); + g_test_add_func("/io/channel/file/fd", test_io_channel_fd); #ifndef _WIN32 g_test_add_func("/io/channel/pipe/sync", test_io_channel_pipe_sync); g_test_add_func("/io/channel/pipe/async", test_io_channel_pipe_async); diff --git a/tests/test-io-channel-socket.c b/tests/test-io-channel-socket.c index 1a36a3c696..e28e40fd94 100644 --- a/tests/test-io-channel-socket.c +++ b/tests/test-io-channel-socket.c @@ -19,6 +19,7 @@ */ #include "io/channel-socket.h" +#include "io/channel-util.h" #include "io-channel-helpers.h" #ifdef HAVE_IFADDRS_H #include <ifaddrs.h> @@ -473,6 +474,24 @@ static void test_io_channel_unix_fd_pass(void) #endif /* _WIN32 */ +static void test_io_channel_ipv4_fd(void) +{ + QIOChannel *ioc; + int fd = -1; + + fd = socket(AF_INET, SOCK_STREAM, 0); + g_assert_cmpint(fd, >, -1); + + ioc = qio_channel_new_fd(fd, &error_abort); + + g_assert_cmpstr(object_get_typename(OBJECT(ioc)), + ==, + TYPE_QIO_CHANNEL_SOCKET); + + object_unref(OBJECT(ioc)); +} + + int main(int argc, char **argv) { bool has_ipv4, has_ipv6; @@ -495,6 +514,8 @@ int main(int argc, char **argv) test_io_channel_ipv4_sync); g_test_add_func("/io/channel/socket/ipv4-async", test_io_channel_ipv4_async); + g_test_add_func("/io/channel/socket/ipv4-fd", + test_io_channel_ipv4_fd); } if (has_ipv6) { g_test_add_func("/io/channel/socket/ipv6-sync", |