mirror of
https://github.com/qemu/qemu.git
synced 2024-12-05 09:43:44 +08:00
357e2f7f4e
The idea is to send a victim request that will possibly block in the server and to send a flush request to cancel the victim request. This patch adds two test to verifiy that: - the server does not reply to a victim request that was actually cancelled - the server replies to the flush request after replying to the victim request if it could not cancel it 9p request cancellation reference: http://man.cat-v.org/plan_9/5/flush Signed-off-by: Greg Kurz <groug@kaod.org> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> (groug, change the test to only write a single byte to avoid any alignment or endianess consideration)
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/*
|
|
* 9p
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef QEMU_9P_SYNTH_H
|
|
#define QEMU_9P_SYNTH_H
|
|
|
|
typedef struct V9fsSynthNode V9fsSynthNode;
|
|
typedef ssize_t (*v9fs_synth_read)(void *buf, int len, off_t offset,
|
|
void *arg);
|
|
typedef ssize_t (*v9fs_synth_write)(void *buf, int len, off_t offset,
|
|
void *arg);
|
|
typedef struct V9fsSynthNodeAttr {
|
|
int mode;
|
|
int inode;
|
|
int nlink;
|
|
v9fs_synth_read read;
|
|
v9fs_synth_write write;
|
|
} V9fsSynthNodeAttr;
|
|
|
|
struct V9fsSynthNode {
|
|
QLIST_HEAD(, V9fsSynthNode) child;
|
|
QLIST_ENTRY(V9fsSynthNode) sibling;
|
|
char name[NAME_MAX];
|
|
V9fsSynthNodeAttr *attr;
|
|
V9fsSynthNodeAttr actual_attr;
|
|
void *private;
|
|
int open_count;
|
|
};
|
|
|
|
typedef struct V9fsSynthOpenState {
|
|
off_t offset;
|
|
V9fsSynthNode *node;
|
|
struct dirent dent;
|
|
} V9fsSynthOpenState;
|
|
|
|
int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode,
|
|
const char *name, V9fsSynthNode **result);
|
|
int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode,
|
|
const char *name, v9fs_synth_read read,
|
|
v9fs_synth_write write, void *arg);
|
|
|
|
/* qtest stuff */
|
|
|
|
#define QTEST_V9FS_SYNTH_WALK_FILE "WALK%d"
|
|
#define QTEST_V9FS_SYNTH_LOPEN_FILE "LOPEN"
|
|
#define QTEST_V9FS_SYNTH_WRITE_FILE "WRITE"
|
|
|
|
/* Any write to the "FLUSH" file is handled one byte at a time by the
|
|
* backend. If the byte is zero, the backend returns success (ie, 1),
|
|
* otherwise it forces the server to try again forever. Thus allowing
|
|
* the client to cancel the request.
|
|
*/
|
|
#define QTEST_V9FS_SYNTH_FLUSH_FILE "FLUSH"
|
|
|
|
#endif
|