channel-command.h (1896B)
1 /* 2 * QEMU I/O channels external command driver 3 * 4 * Copyright (c) 2015 Red Hat, Inc. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 * 19 */ 20 21 #ifndef QIO_CHANNEL_COMMAND_H 22 #define QIO_CHANNEL_COMMAND_H 23 24 #include "io/channel.h" 25 #include "qom/object.h" 26 27 #define TYPE_QIO_CHANNEL_COMMAND "qio-channel-command" 28 OBJECT_DECLARE_SIMPLE_TYPE(QIOChannelCommand, QIO_CHANNEL_COMMAND) 29 30 31 32 /** 33 * QIOChannelCommand: 34 * 35 * The QIOChannelCommand class provides a channel implementation 36 * that can transport data with an externally running command 37 * via its stdio streams. 38 */ 39 40 struct QIOChannelCommand { 41 QIOChannel parent; 42 int writefd; 43 int readfd; 44 GPid pid; 45 #ifdef WIN32 46 bool blocking; 47 #endif 48 }; 49 50 51 /** 52 * qio_channel_command_new_spawn: 53 * @argv: the NULL terminated list of command arguments 54 * @flags: the I/O mode, one of O_RDONLY, O_WRONLY, O_RDWR 55 * @errp: pointer to a NULL-initialized error object 56 * 57 * Create a channel for performing I/O with the 58 * command to be spawned with arguments @argv. 59 * 60 * Returns: the command channel object, or NULL on error 61 */ 62 QIOChannelCommand * 63 qio_channel_command_new_spawn(const char *const argv[], 64 int flags, 65 Error **errp); 66 67 68 #endif /* QIO_CHANNEL_COMMAND_H */