projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 3c529d93 AL |
1 | /* |
| 2 | * QEMU posix-aio emulation | |
| 3 | * | |
| 4 | * Copyright IBM, Corp. 2008 | |
| 5 | * | |
| 6 | * Authors: | |
| 7 | * Anthony Liguori <aliguori@us.ibm.com> | |
| 8 | * | |
| 9 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
| 10 | * the COPYING file in the top-level directory. | |
| 11 | * | |
| 12 | */ | |
| 13 | ||
| 14 | #ifndef QEMU_POSIX_AIO_COMPAT_H | |
| 15 | #define QEMU_POSIX_AIO_COMPAT_H | |
| 16 | ||
| 17 | #include <sys/types.h> | |
| 18 | #include <unistd.h> | |
| 19 | #include <signal.h> | |
| 20 | ||
| 21 | #include "sys-queue.h" | |
| 22 | ||
| 23 | #define QEMU_PAIO_CANCELED 0x01 | |
| 24 | #define QEMU_PAIO_NOTCANCELED 0x02 | |
| 25 | #define QEMU_PAIO_ALLDONE 0x03 | |
| 26 | ||
| 27 | struct qemu_paiocb | |
| 28 | { | |
| 29 | int aio_fildes; | |
| f141eafe AL |
30 | union { |
| 31 | struct iovec *aio_iov; | |
| 32 | void *aio_ioctl_buf; | |
| 33 | }; | |
| 34 | int aio_niov; | |
| 3c529d93 | 35 | size_t aio_nbytes; |
| 221f715d | 36 | #define aio_ioctl_cmd aio_nbytes /* for QEMU_PAIO_IOCTL */ |
| 55f11ca3 | 37 | int ev_signo; |
| 3c529d93 | 38 | off_t aio_offset; |
| f141eafe AL |
39 | unsigned aio_flags; |
| 40 | /* 512 byte alignment required for buffer, offset and length */ | |
| 41 | #define QEMU_AIO_SECTOR_ALIGNED 0x01 | |
| 3c529d93 AL |
42 | |
| 43 | /* private */ | |
| 44 | TAILQ_ENTRY(qemu_paiocb) node; | |
| 221f715d AL |
45 | int aio_type; |
| 46 | #define QEMU_PAIO_READ 0x01 | |
| 47 | #define QEMU_PAIO_WRITE 0x02 | |
| 48 | #define QEMU_PAIO_IOCTL 0x03 | |
| 3c529d93 AL |
49 | ssize_t ret; |
| 50 | int active; | |
| 51 | }; | |
| 52 | ||
| 53 | struct qemu_paioinit | |
| 54 | { | |
| 55 | unsigned int aio_threads; | |
| 56 | unsigned int aio_num; | |
| 57 | unsigned int aio_idle_time; | |
| 58 | }; | |
| 59 | ||
| 60 | int qemu_paio_init(struct qemu_paioinit *aioinit); | |
| 61 | int qemu_paio_read(struct qemu_paiocb *aiocb); | |
| 62 | int qemu_paio_write(struct qemu_paiocb *aiocb); | |
| 221f715d | 63 | int qemu_paio_ioctl(struct qemu_paiocb *aiocb); |
| 3c529d93 AL |
64 | int qemu_paio_error(struct qemu_paiocb *aiocb); |
| 65 | ssize_t qemu_paio_return(struct qemu_paiocb *aiocb); | |
| 66 | int qemu_paio_cancel(int fd, struct qemu_paiocb *aiocb); | |
| 67 | ||
| 68 | #endif |