| 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 */ |