projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 39c0564e VJJ |
1 | /* |
| 2 | * Virtio 9p backend | |
| 3 | * | |
| 4 | * Copyright IBM, Corp. 2010 | |
| 5 | * | |
| 6 | * Authors: | |
| 7 | * Harsh Prateek Bora <harsh@linux.vnet.ibm.com> | |
| 8 | * Venkateswararao Jujjuri(JV) <jvrao@linux.vnet.ibm.com> | |
| 9 | * | |
| 10 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
| 11 | * the COPYING file in the top-level directory. | |
| 12 | * | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef _QEMU_VIRTIO_9P_COTH_H | |
| 16 | #define _QEMU_VIRTIO_9P_COTH_H | |
| 17 | ||
| 18 | #include "qemu-thread.h" | |
| 737e150e | 19 | #include "block/coroutine.h" |
| ff06030f | 20 | #include "virtio-9p.h" |
| 39c0564e VJJ |
21 | #include <glib.h> |
| 22 | ||
| 23 | typedef struct V9fsThPool { | |
| 24 | int rfd; | |
| 25 | int wfd; | |
| 26 | GThreadPool *pool; | |
| 27 | GAsyncQueue *completed; | |
| 28 | } V9fsThPool; | |
| 29 | ||
| 30 | /* | |
| 31 | * we want to use bottom half because we want to make sure the below | |
| 32 | * sequence of events. | |
| 33 | * | |
| 34 | * 1. Yield the coroutine in the QEMU thread. | |
| 35 | * 2. Submit the coroutine to a worker thread. | |
| 36 | * 3. Enter the coroutine in the worker thread. | |
| 37 | * we cannot swap step 1 and 2, because that would imply worker thread | |
| 38 | * can enter coroutine while step1 is still running | |
| 39 | */ | |
| 40 | #define v9fs_co_run_in_worker(code_block) \ | |
| 41 | do { \ | |
| 42 | QEMUBH *co_bh; \ | |
| 43 | co_bh = qemu_bh_new(co_run_in_worker_bh, \ | |
| 44 | qemu_coroutine_self()); \ | |
| 45 | qemu_bh_schedule(co_bh); \ | |
| 46 | /* \ | |
| 66a0a2cb | 47 | * yield in qemu thread and re-enter back \ |
| 39c0564e VJJ |
48 | * in glib worker thread \ |
| 49 | */ \ | |
| 50 | qemu_coroutine_yield(); \ | |
| 51 | qemu_bh_delete(co_bh); \ | |
| 52 | code_block; \ | |
| 53 | /* re-enter back to qemu thread */ \ | |
| 54 | qemu_coroutine_yield(); \ | |
| 55 | } while (0) | |
| 56 | ||
| 57 | extern void co_run_in_worker_bh(void *); | |
| 58 | extern int v9fs_init_worker_threads(void); | |
| bccacf6c AK |
59 | extern int v9fs_co_readlink(V9fsPDU *, V9fsPath *, V9fsString *); |
| 60 | extern int v9fs_co_readdir_r(V9fsPDU *, V9fsFidState *, | |
| 5f524c1e | 61 | struct dirent *, struct dirent **result); |
| bccacf6c AK |
62 | extern off_t v9fs_co_telldir(V9fsPDU *, V9fsFidState *); |
| 63 | extern void v9fs_co_seekdir(V9fsPDU *, V9fsFidState *, off_t); | |
| 64 | extern void v9fs_co_rewinddir(V9fsPDU *, V9fsFidState *); | |
| 65 | extern int v9fs_co_statfs(V9fsPDU *, V9fsPath *, struct statfs *); | |
| 66 | extern int v9fs_co_lstat(V9fsPDU *, V9fsPath *, struct stat *); | |
| 67 | extern int v9fs_co_chmod(V9fsPDU *, V9fsPath *, mode_t); | |
| 68 | extern int v9fs_co_utimensat(V9fsPDU *, V9fsPath *, struct timespec [2]); | |
| 69 | extern int v9fs_co_chown(V9fsPDU *, V9fsPath *, uid_t, gid_t); | |
| 70 | extern int v9fs_co_truncate(V9fsPDU *, V9fsPath *, off_t); | |
| 71 | extern int v9fs_co_llistxattr(V9fsPDU *, V9fsPath *, void *, size_t); | |
| 72 | extern int v9fs_co_lgetxattr(V9fsPDU *, V9fsPath *, | |
| 1ceffa54 | 73 | V9fsString *, void *, size_t); |
| bccacf6c | 74 | extern int v9fs_co_mknod(V9fsPDU *, V9fsFidState *, V9fsString *, uid_t, |
| 02cb7f3a | 75 | gid_t, dev_t, mode_t, struct stat *); |
| bccacf6c | 76 | extern int v9fs_co_mkdir(V9fsPDU *, V9fsFidState *, V9fsString *, |
| 02cb7f3a | 77 | mode_t, uid_t, gid_t, struct stat *); |
| bccacf6c AK |
78 | extern int v9fs_co_remove(V9fsPDU *, V9fsPath *); |
| 79 | extern int v9fs_co_rename(V9fsPDU *, V9fsPath *, V9fsPath *); | |
| 80 | extern int v9fs_co_unlinkat(V9fsPDU *, V9fsPath *, V9fsString *, int flags); | |
| 81 | extern int v9fs_co_renameat(V9fsPDU *, V9fsPath *, V9fsString *, | |
| 2289be19 | 82 | V9fsPath *, V9fsString *); |
| cc720ddb | 83 | extern int v9fs_co_fstat(V9fsPDU *, V9fsFidState *, struct stat *); |
| bccacf6c AK |
84 | extern int v9fs_co_opendir(V9fsPDU *, V9fsFidState *); |
| 85 | extern int v9fs_co_open(V9fsPDU *, V9fsFidState *, int); | |
| 86 | extern int v9fs_co_open2(V9fsPDU *, V9fsFidState *, V9fsString *, | |
| 02cb7f3a | 87 | gid_t, int, int, struct stat *); |
| bccacf6c | 88 | extern int v9fs_co_lsetxattr(V9fsPDU *, V9fsPath *, V9fsString *, |
| bed4352c | 89 | void *, size_t, int); |
| bccacf6c | 90 | extern int v9fs_co_lremovexattr(V9fsPDU *, V9fsPath *, V9fsString *); |
| cc720ddb AK |
91 | extern int v9fs_co_closedir(V9fsPDU *, V9fsFidOpenState *); |
| 92 | extern int v9fs_co_close(V9fsPDU *, V9fsFidOpenState *); | |
| bccacf6c AK |
93 | extern int v9fs_co_fsync(V9fsPDU *, V9fsFidState *, int); |
| 94 | extern int v9fs_co_symlink(V9fsPDU *, V9fsFidState *, V9fsString *, | |
| 02cb7f3a | 95 | const char *, gid_t, struct stat *); |
| bccacf6c | 96 | extern int v9fs_co_link(V9fsPDU *, V9fsFidState *, |
| 2289be19 | 97 | V9fsFidState *, V9fsString *); |
| bccacf6c | 98 | extern int v9fs_co_pwritev(V9fsPDU *, V9fsFidState *, |
| f6b3c976 | 99 | struct iovec *, int, int64_t); |
| bccacf6c | 100 | extern int v9fs_co_preadv(V9fsPDU *, V9fsFidState *, |
| 7eafdcc9 | 101 | struct iovec *, int, int64_t); |
| bccacf6c | 102 | extern int v9fs_co_name_to_path(V9fsPDU *, V9fsPath *, |
| 2289be19 | 103 | const char *, V9fsPath *); |
| e06a765e HPB |
104 | extern int v9fs_co_st_gen(V9fsPDU *pdu, V9fsPath *path, mode_t, |
| 105 | V9fsStatDotl *v9stat); | |
| 106 | ||
| 39c0564e | 107 | #endif |