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4 * Copyright IBM, Corp. 2010
7 * Harsh Prateek Bora <harsh@linux.vnet.ibm.com>
8 * Venkateswararao Jujjuri(JV) <jvrao@linux.vnet.ibm.com>
10 * This work is licensed under the terms of the GNU GPL, version 2. See
11 * the COPYING file in the top-level directory.
15 #ifndef QEMU_9P_COTH_H
16 #define QEMU_9P_COTH_H
18 #include "qemu/thread.h"
19 #include "qemu/coroutine.h"
23 * we want to use bottom half because we want to make sure the below
26 * 1. Yield the coroutine in the QEMU thread.
27 * 2. Submit the coroutine to a worker thread.
28 * 3. Enter the coroutine in the worker thread.
29 * we cannot swap step 1 and 2, because that would imply worker thread
30 * can enter coroutine while step1 is still running
32 #define v9fs_co_run_in_worker(code_block) \
35 co_bh = qemu_bh_new(co_run_in_worker_bh, \
36 qemu_coroutine_self()); \
37 qemu_bh_schedule(co_bh); \
39 * yield in qemu thread and re-enter back \
42 qemu_coroutine_yield(); \
43 qemu_bh_delete(co_bh); \
45 /* re-enter back to qemu thread */ \
46 qemu_coroutine_yield(); \
49 void co_run_in_worker_bh(void *);
50 int coroutine_fn
v9fs_co_readlink(V9fsPDU
*, V9fsPath
*, V9fsString
*);
51 int coroutine_fn
v9fs_co_readdir(V9fsPDU
*, V9fsFidState
*, struct dirent
**);
52 int coroutine_fn
v9fs_co_readdir_many(V9fsPDU
*, V9fsFidState
*,
53 struct V9fsDirEnt
**, off_t
, int32_t,
55 off_t coroutine_fn
v9fs_co_telldir(V9fsPDU
*, V9fsFidState
*);
56 void coroutine_fn
v9fs_co_seekdir(V9fsPDU
*, V9fsFidState
*, off_t
);
57 void coroutine_fn
v9fs_co_rewinddir(V9fsPDU
*, V9fsFidState
*);
58 int coroutine_fn
v9fs_co_statfs(V9fsPDU
*, V9fsPath
*, struct statfs
*);
59 int coroutine_fn
v9fs_co_lstat(V9fsPDU
*, V9fsPath
*, struct stat
*);
60 int coroutine_fn
v9fs_co_chmod(V9fsPDU
*, V9fsPath
*, mode_t
);
61 int coroutine_fn
v9fs_co_utimensat(V9fsPDU
*, V9fsPath
*, struct timespec
[2]);
62 int coroutine_fn
v9fs_co_chown(V9fsPDU
*, V9fsPath
*, uid_t
, gid_t
);
63 int coroutine_fn
v9fs_co_truncate(V9fsPDU
*, V9fsPath
*, off_t
);
64 int coroutine_fn
v9fs_co_llistxattr(V9fsPDU
*, V9fsPath
*, void *, size_t);
65 int coroutine_fn
v9fs_co_lgetxattr(V9fsPDU
*, V9fsPath
*,
66 V9fsString
*, void *, size_t);
67 int coroutine_fn
v9fs_co_mknod(V9fsPDU
*, V9fsFidState
*, V9fsString
*, uid_t
,
68 gid_t
, dev_t
, mode_t
, struct stat
*);
69 int coroutine_fn
v9fs_co_mkdir(V9fsPDU
*, V9fsFidState
*, V9fsString
*,
70 mode_t
, uid_t
, gid_t
, struct stat
*);
71 int coroutine_fn
v9fs_co_remove(V9fsPDU
*, V9fsPath
*);
72 int coroutine_fn
v9fs_co_rename(V9fsPDU
*, V9fsPath
*, V9fsPath
*);
73 int coroutine_fn
v9fs_co_unlinkat(V9fsPDU
*, V9fsPath
*, V9fsString
*,
75 int coroutine_fn
v9fs_co_renameat(V9fsPDU
*, V9fsPath
*, V9fsString
*,
76 V9fsPath
*, V9fsString
*);
77 int coroutine_fn
v9fs_co_fstat(V9fsPDU
*, V9fsFidState
*, struct stat
*);
78 int coroutine_fn
v9fs_co_opendir(V9fsPDU
*, V9fsFidState
*);
79 int coroutine_fn
v9fs_co_open(V9fsPDU
*, V9fsFidState
*, int);
80 int coroutine_fn
v9fs_co_open2(V9fsPDU
*, V9fsFidState
*, V9fsString
*,
81 gid_t
, int, int, struct stat
*);
82 int coroutine_fn
v9fs_co_lsetxattr(V9fsPDU
*, V9fsPath
*, V9fsString
*,
84 int coroutine_fn
v9fs_co_lremovexattr(V9fsPDU
*, V9fsPath
*, V9fsString
*);
85 int coroutine_fn
v9fs_co_closedir(V9fsPDU
*, V9fsFidOpenState
*);
86 int coroutine_fn
v9fs_co_close(V9fsPDU
*, V9fsFidOpenState
*);
87 int coroutine_fn
v9fs_co_fsync(V9fsPDU
*, V9fsFidState
*, int);
88 int coroutine_fn
v9fs_co_symlink(V9fsPDU
*, V9fsFidState
*, V9fsString
*,
89 const char *, gid_t
, struct stat
*);
90 int coroutine_fn
v9fs_co_link(V9fsPDU
*, V9fsFidState
*,
91 V9fsFidState
*, V9fsString
*);
92 int coroutine_fn
v9fs_co_pwritev(V9fsPDU
*, V9fsFidState
*,
93 struct iovec
*, int, int64_t);
94 int coroutine_fn
v9fs_co_preadv(V9fsPDU
*, V9fsFidState
*,
95 struct iovec
*, int, int64_t);
96 int coroutine_fn
v9fs_co_name_to_path(V9fsPDU
*, V9fsPath
*,
97 const char *, V9fsPath
*);
98 int coroutine_fn
v9fs_co_st_gen(V9fsPDU
*pdu
, V9fsPath
*path
, mode_t
,
99 V9fsStatDotl
*v9stat
);