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Merge remote-tracking branch 'remotes/kvaneesh/tags/for-upstream-signed' into staging

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VirtFS update:

Cleanups mostly isolating virtio related details into separate files. This
is done to enable easy addition of Xen transport for VirtFS.

The changes include:

1. Rename a bunch of files and functions to make clear they are generic.
2. disentangle virtio transport code and generic 9pfs code.
3. Some function name clean-up.

# gpg: Signature made Tue 12 Jan 2016 06:04:35 GMT using RSA key ID 04C4E23A
# gpg: Good signature from "Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4846 9DE7 1860 360F A6E9  968C DE41 A4FE 04C4 E23A

* remotes/kvaneesh/tags/for-upstream-signed: (25 commits)
  9pfs: introduce V9fsVirtioState
  9pfs: factor out v9fs_device_{,un}realize_common
  9pfs: rename virtio-9p.c to 9p.c
  9pfs: rename virtio_9p_set_fd_limit to use v9fs_ prefix
  9pfs: move handle_9p_output and make it static function
  9pfs: export pdu_{submit,alloc,free}
  9pfs: factor out virtio_9p_push_and_notify
  9pfs: break out 9p.h from virtio-9p.h
  9pfs: break out virtio_init_iov_from_pdu
  9pfs: factor out pdu_push_and_notify
  9pfs: factor out virtio_pdu_{,un}marshal
  9pfs: make pdu_{,un}marshal proper functions
  9pfs: PDU processing functions should start pdu_ prefix
  9pfs: PDU processing functions don't need to take V9fsState as argument
  fsdev: rename virtio-9p-marshal.{c,h} to 9p-iov-marshal.{c,h}
  fsdev: break out 9p-marshal.{c,h} from virtio-9p-marshal.{c,h}
  9pfs: remove dead code
  9pfs: merge hw/virtio/virtio-9p.h into hw/9pfs/virtio-9p.h
  9pfs: rename virtio-9p-xattr{,-user}.{c,h} to 9p-xattr{,-user}.{c,h}
  9pfs: rename virtio-9p-synth.{c,h} to 9p-synth.{c,h}
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
2016-01-12 17:37:22 +00:00
parent 8acc216b95 00588a0aa2
commit 649a1bbaf9
31 changed files with 840 additions and 750 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Makefile
+1 -1
View File
@@ -240,7 +240,7 @@ qemu-io$(EXESUF): qemu-io.o $(block-obj-y) $(crypto-obj-y) $(qom-obj-y) libqemuu
qemu-bridge-helper$(EXESUF): qemu-bridge-helper.o
fsdev/virtfs-proxy-helper$(EXESUF): fsdev/virtfs-proxy-helper.o fsdev/virtio-9p-marshal.o libqemuutil.a libqemustub.a
fsdev/virtfs-proxy-helper$(EXESUF): fsdev/virtfs-proxy-helper.o fsdev/9p-marshal.o fsdev/9p-iov-marshal.o libqemuutil.a libqemustub.a
fsdev/virtfs-proxy-helper$(EXESUF): LIBS += -lcap
qemu-img-cmds.h: $(SRC_PATH)/qemu-img-cmds.hx
fsdev/virtio-9p-marshal.c → fsdev/9p-iov-marshal.c
+86 -89
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p backend
* 9p backend
*
* Copyright IBM, Corp. 2010
*
@@ -22,40 +22,9 @@
#include <errno.h>
#include "qemu/compiler.h"
#include "virtio-9p-marshal.h"
#include "9p-iov-marshal.h"
#include "qemu/bswap.h"
void v9fs_string_free(V9fsString *str)
{
g_free(str->data);
str->data = NULL;
str->size = 0;
}
void v9fs_string_null(V9fsString *str)
{
v9fs_string_free(str);
}
void GCC_FMT_ATTR(2, 3)
v9fs_string_sprintf(V9fsString *str, const char *fmt, ...)
{
va_list ap;
v9fs_string_free(str);
va_start(ap, fmt);
str->size = g_vasprintf(&str->data, fmt, ap);
va_end(ap);
}
void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs)
{
v9fs_string_free(lhs);
v9fs_string_sprintf(lhs, "%s", rhs->data);
}
static ssize_t v9fs_packunpack(void *addr, struct iovec *sg, int sg_count,
size_t offset, size_t size, int pack)
{
@@ -107,15 +76,13 @@ ssize_t v9fs_pack(struct iovec *in_sg, int in_num, size_t offset,
return v9fs_packunpack((void *)src, in_sg, in_num, offset, size, 1);
}
ssize_t v9fs_unmarshal(struct iovec *out_sg, int out_num, size_t offset,
int bswap, const char *fmt, ...)
ssize_t v9fs_iov_vunmarshal(struct iovec *out_sg, int out_num, size_t offset,
int bswap, const char *fmt, va_list ap)
{
int i;
va_list ap;
ssize_t copied = 0;
size_t old_offset = offset;
va_start(ap, fmt);
for (i = 0; fmt[i]; i++) {
switch (fmt[i]) {
case 'b': {
@@ -158,8 +125,8 @@ ssize_t v9fs_unmarshal(struct iovec *out_sg, int out_num, size_t offset,
}
case 's': {
V9fsString *str = va_arg(ap, V9fsString *);
copied = v9fs_unmarshal(out_sg, out_num, offset, bswap,
"w", &str->size);
copied = v9fs_iov_unmarshal(out_sg, out_num, offset, bswap,
"w", &str->size);
if (copied > 0) {
offset += copied;
str->data = g_malloc(str->size + 1);
@@ -175,56 +142,70 @@ ssize_t v9fs_unmarshal(struct iovec *out_sg, int out_num, size_t offset,
}
case 'Q': {
V9fsQID *qidp = va_arg(ap, V9fsQID *);
copied = v9fs_unmarshal(out_sg, out_num, offset, bswap, "bdq",
&qidp->type, &qidp->version, &qidp->path);
copied = v9fs_iov_unmarshal(out_sg, out_num, offset, bswap,
"bdq", &qidp->type, &qidp->version,
&qidp->path);
break;
}
case 'S': {
V9fsStat *statp = va_arg(ap, V9fsStat *);
copied = v9fs_unmarshal(out_sg, out_num, offset, bswap,
"wwdQdddqsssssddd",
&statp->size, &statp->type, &statp->dev,
&statp->qid, &statp->mode, &statp->atime,
&statp->mtime, &statp->length,
&statp->name, &statp->uid, &statp->gid,
&statp->muid, &statp->extension,
&statp->n_uid, &statp->n_gid,
&statp->n_muid);
copied = v9fs_iov_unmarshal(out_sg, out_num, offset, bswap,
"wwdQdddqsssssddd",
&statp->size, &statp->type,
&statp->dev, &statp->qid,
&statp->mode, &statp->atime,
&statp->mtime, &statp->length,
&statp->name, &statp->uid,
&statp->gid, &statp->muid,
&statp->extension,
&statp->n_uid, &statp->n_gid,
&statp->n_muid);
break;
}
case 'I': {
V9fsIattr *iattr = va_arg(ap, V9fsIattr *);
copied = v9fs_unmarshal(out_sg, out_num, offset, bswap,
"ddddqqqqq",
&iattr->valid, &iattr->mode,
&iattr->uid, &iattr->gid, &iattr->size,
&iattr->atime_sec, &iattr->atime_nsec,
&iattr->mtime_sec, &iattr->mtime_nsec);
copied = v9fs_iov_unmarshal(out_sg, out_num, offset, bswap,
"ddddqqqqq",
&iattr->valid, &iattr->mode,
&iattr->uid, &iattr->gid,
&iattr->size, &iattr->atime_sec,
&iattr->atime_nsec,
&iattr->mtime_sec,
&iattr->mtime_nsec);
break;
}
default:
break;
}
if (copied < 0) {
va_end(ap);
return copied;
}
offset += copied;
}
va_end(ap);
return offset - old_offset;
}
ssize_t v9fs_marshal(struct iovec *in_sg, int in_num, size_t offset,
int bswap, const char *fmt, ...)
ssize_t v9fs_iov_unmarshal(struct iovec *out_sg, int out_num, size_t offset,
int bswap, const char *fmt, ...)
{
ssize_t ret;
va_list ap;
va_start(ap, fmt);
ret = v9fs_iov_vunmarshal(out_sg, out_num, offset, bswap, fmt, ap);
va_end(ap);
return ret;
}
ssize_t v9fs_iov_vmarshal(struct iovec *in_sg, int in_num, size_t offset,
int bswap, const char *fmt, va_list ap)
{
int i;
va_list ap;
ssize_t copied = 0;
size_t old_offset = offset;
va_start(ap, fmt);
for (i = 0; fmt[i]; i++) {
switch (fmt[i]) {
case 'b': {
@@ -264,8 +245,8 @@ ssize_t v9fs_marshal(struct iovec *in_sg, int in_num, size_t offset,
}
case 's': {
V9fsString *str = va_arg(ap, V9fsString *);
copied = v9fs_marshal(in_sg, in_num, offset, bswap,
"w", str->size);
copied = v9fs_iov_marshal(in_sg, in_num, offset, bswap,
"w", str->size);
if (copied > 0) {
offset += copied;
copied = v9fs_pack(in_sg, in_num, offset, str->data, str->size);
@@ -274,49 +255,65 @@ ssize_t v9fs_marshal(struct iovec *in_sg, int in_num, size_t offset,
}
case 'Q': {
V9fsQID *qidp = va_arg(ap, V9fsQID *);
copied = v9fs_marshal(in_sg, in_num, offset, bswap, "bdq",
qidp->type, qidp->version, qidp->path);
copied = v9fs_iov_marshal(in_sg, in_num, offset, bswap, "bdq",
qidp->type, qidp->version,
qidp->path);
break;
}
case 'S': {
V9fsStat *statp = va_arg(ap, V9fsStat *);
copied = v9fs_marshal(in_sg, in_num, offset, bswap,
"wwdQdddqsssssddd",
statp->size, statp->type, statp->dev,
&statp->qid, statp->mode, statp->atime,
statp->mtime, statp->length, &statp->name,
&statp->uid, &statp->gid, &statp->muid,
&statp->extension, statp->n_uid,
statp->n_gid, statp->n_muid);
copied = v9fs_iov_marshal(in_sg, in_num, offset, bswap,
"wwdQdddqsssssddd",
statp->size, statp->type, statp->dev,
&statp->qid, statp->mode, statp->atime,
statp->mtime, statp->length,
&statp->name,
&statp->uid, &statp->gid, &statp->muid,
&statp->extension, statp->n_uid,
statp->n_gid, statp->n_muid);
break;
}
case 'A': {
V9fsStatDotl *statp = va_arg(ap, V9fsStatDotl *);
copied = v9fs_marshal(in_sg, in_num, offset, bswap,
"qQdddqqqqqqqqqqqqqqq",
statp->st_result_mask,
&statp->qid, statp->st_mode,
statp->st_uid, statp->st_gid,
statp->st_nlink, statp->st_rdev,
statp->st_size, statp->st_blksize,
statp->st_blocks, statp->st_atime_sec,
statp->st_atime_nsec, statp->st_mtime_sec,
statp->st_mtime_nsec, statp->st_ctime_sec,
statp->st_ctime_nsec, statp->st_btime_sec,
statp->st_btime_nsec, statp->st_gen,
statp->st_data_version);
copied = v9fs_iov_marshal(in_sg, in_num, offset, bswap,
"qQdddqqqqqqqqqqqqqqq",
statp->st_result_mask,
&statp->qid, statp->st_mode,
statp->st_uid, statp->st_gid,
statp->st_nlink, statp->st_rdev,
statp->st_size, statp->st_blksize,
statp->st_blocks, statp->st_atime_sec,
statp->st_atime_nsec,
statp->st_mtime_sec,
statp->st_mtime_nsec,
statp->st_ctime_sec,
statp->st_ctime_nsec,
statp->st_btime_sec,
statp->st_btime_nsec, statp->st_gen,
statp->st_data_version);
break;
}
default:
break;
}
if (copied < 0) {
va_end(ap);
return copied;
}
offset += copied;
}
va_end(ap);
return offset - old_offset;
}
ssize_t v9fs_iov_marshal(struct iovec *in_sg, int in_num, size_t offset,
int bswap, const char *fmt, ...)
{
ssize_t ret;
va_list ap;
va_start(ap, fmt);
ret = v9fs_iov_vmarshal(in_sg, in_num, offset, bswap, fmt, ap);
va_end(ap);
return ret;
}
fsdev/9p-iov-marshal.h
+18
View File
@@ -0,0 +1,18 @@
#ifndef _QEMU_9P_IOV_MARSHAL_H
#define _QEMU_9P_IOV_MARSHAL_H
#include "9p-marshal.h"
ssize_t v9fs_pack(struct iovec *in_sg, int in_num, size_t offset,
const void *src, size_t size);
ssize_t v9fs_iov_unmarshal(struct iovec *out_sg, int out_num, size_t offset,
int bswap, const char *fmt, ...);
ssize_t v9fs_iov_marshal(struct iovec *in_sg, int in_num, size_t offset,
int bswap, const char *fmt, ...);
ssize_t v9fs_iov_vunmarshal(struct iovec *out_sg, int out_num, size_t offset,
int bswap, const char *fmt, va_list ap);
ssize_t v9fs_iov_vmarshal(struct iovec *in_sg, int in_num, size_t offset,
int bswap, const char *fmt, va_list ap);
#endif
fsdev/9p-marshal.c
+56
View File
@@ -0,0 +1,56 @@
/*
* 9p backend
*
* Copyright IBM, Corp. 2010
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
*/
#include <glib.h>
#include <glib/gprintf.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/time.h>
#include <utime.h>
#include <sys/uio.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include "qemu/compiler.h"
#include "9p-marshal.h"
void v9fs_string_free(V9fsString *str)
{
g_free(str->data);
str->data = NULL;
str->size = 0;
}
void v9fs_string_null(V9fsString *str)
{
v9fs_string_free(str);
}
void GCC_FMT_ATTR(2, 3)
v9fs_string_sprintf(V9fsString *str, const char *fmt, ...)
{
va_list ap;
v9fs_string_free(str);
va_start(ap, fmt);
str->size = g_vasprintf(&str->data, fmt, ap);
va_end(ap);
}
void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs)
{
v9fs_string_free(lhs);
v9fs_string_sprintf(lhs, "%s", rhs->data);
}
fsdev/virtio-9p-marshal.h → fsdev/9p-marshal.h
+3 -9
View File
@@ -1,5 +1,5 @@
#ifndef _QEMU_VIRTIO_9P_MARSHAL_H
#define _QEMU_VIRTIO_9P_MARSHAL_H
#ifndef _QEMU_9P_MARSHAL_H
#define _QEMU_9P_MARSHAL_H
typedef struct V9fsString
{
@@ -30,7 +30,7 @@ typedef struct V9fsStat
V9fsString muid;
/* 9p2000.u */
V9fsString extension;
int32_t n_uid;
int32_t n_uid;
int32_t n_gid;
int32_t n_muid;
} V9fsStat;
@@ -81,10 +81,4 @@ extern void v9fs_string_null(V9fsString *str);
extern void v9fs_string_sprintf(V9fsString *str, const char *fmt, ...);
extern void v9fs_string_copy(V9fsString *lhs, V9fsString *rhs);
ssize_t v9fs_pack(struct iovec *in_sg, int in_num, size_t offset,
const void *src, size_t size);
ssize_t v9fs_unmarshal(struct iovec *out_sg, int out_num, size_t offset,
int bswap, const char *fmt, ...);
ssize_t v9fs_marshal(struct iovec *in_sg, int in_num, size_t offset,
int bswap, const char *fmt, ...);
#endif
fsdev/Makefile.objs
+1 -1
View File
@@ -1,7 +1,7 @@
ifeq ($(CONFIG_VIRTIO)$(CONFIG_VIRTFS)$(CONFIG_PCI),yyy)
# Lots of the fsdev/9pcode is pulled in by vl.c via qemu_fsdev_add.
# only pull in the actual virtio-9p device if we also enabled virtio.
common-obj-y = qemu-fsdev.o virtio-9p-marshal.o
common-obj-y = qemu-fsdev.o 9p-marshal.o 9p-iov-marshal.o
else
common-obj-y = qemu-fsdev-dummy.o
endif
fsdev/virtfs-proxy-helper.c
+3 -3
View File
@@ -23,9 +23,9 @@
#include "qemu-common.h"
#include "qemu/sockets.h"
#include "qemu/xattr.h"
#include "virtio-9p-marshal.h"
#include "hw/9pfs/virtio-9p-proxy.h"
#include "fsdev/virtio-9p-marshal.h"
#include "9p-iov-marshal.h"
#include "hw/9pfs/9p-proxy.h"
#include "fsdev/9p-iov-marshal.h"
#define PROGNAME "virtfs-proxy-helper"
hw/9pfs/virtio-9p-handle.c → hw/9pfs/9p-handle.c
+3 -4
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p handle callback
* 9p handle callback
*
* Copyright IBM, Corp. 2011
*
@@ -11,9 +11,8 @@
*
*/
#include "hw/virtio/virtio.h"
#include "virtio-9p.h"
#include "virtio-9p-xattr.h"
#include "9p.h"
#include "9p-xattr.h"
#include <arpa/inet.h>
#include <pwd.h>
#include <grp.h>
hw/9pfs/virtio-9p-local.c → hw/9pfs/9p-local.c
+3 -4
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p Posix callback
* 9p Posix callback
*
* Copyright IBM, Corp. 2010
*
@@ -11,9 +11,8 @@
*
*/
#include "hw/virtio/virtio.h"
#include "virtio-9p.h"
#include "virtio-9p-xattr.h"
#include "9p.h"
#include "9p-xattr.h"
#include "fsdev/qemu-fsdev.h" /* local_ops */
#include <arpa/inet.h>
#include <pwd.h>
hw/9pfs/virtio-9p-posix-acl.c → hw/9pfs/9p-posix-acl.c
+3 -4
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p system.posix* xattr callback
* 9p system.posix* xattr callback
*
* Copyright IBM, Corp. 2010
*
@@ -13,10 +13,9 @@
#include <sys/types.h>
#include "qemu/xattr.h"
#include "hw/virtio/virtio.h"
#include "virtio-9p.h"
#include "9p.h"
#include "fsdev/file-op-9p.h"
#include "virtio-9p-xattr.h"
#include "9p-xattr.h"
#define MAP_ACL_ACCESS "user.virtfs.system.posix_acl_access"
#define MAP_ACL_DEFAULT "user.virtfs.system.posix_acl_default"
hw/9pfs/virtio-9p-proxy.c → hw/9pfs/9p-proxy.c
+3 -4
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p Proxy callback
* 9p Proxy callback
*
* Copyright IBM, Corp. 2011
*
@@ -11,11 +11,10 @@
*/
#include <sys/socket.h>
#include <sys/un.h>
#include "hw/virtio/virtio.h"
#include "virtio-9p.h"
#include "9p.h"
#include "qemu/error-report.h"
#include "fsdev/qemu-fsdev.h"
#include "virtio-9p-proxy.h"
#include "9p-proxy.h"
typedef struct V9fsProxy {
int sockfd;
hw/9pfs/virtio-9p-proxy.h → hw/9pfs/9p-proxy.h
+5 -5
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p Proxy callback
* 9p Proxy callback
*
* Copyright IBM, Corp. 2011
*
@@ -9,8 +9,8 @@
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*/
#ifndef _QEMU_VIRTIO_9P_PROXY_H
#define _QEMU_VIRTIO_9P_PROXY_H
#ifndef _QEMU_9P_PROXY_H
#define _QEMU_9P_PROXY_H
#define PROXY_MAX_IO_SZ (64 * 1024)
#define V9FS_FD_VALID INT_MAX
@@ -20,9 +20,9 @@
* marsha/unmarshal doesn't do little endian conversion.
*/
#define proxy_unmarshal(in_sg, offset, fmt, args...) \
v9fs_unmarshal(in_sg, 1, offset, 0, fmt, ##args)
v9fs_iov_unmarshal(in_sg, 1, offset, 0, fmt, ##args)
#define proxy_marshal(out_sg, offset, fmt, args...) \
v9fs_marshal(out_sg, 1, offset, 0, fmt, ##args)
v9fs_iov_marshal(out_sg, 1, offset, 0, fmt, ##args)
union MsgControl {
struct cmsghdr cmsg;
hw/9pfs/virtio-9p-synth.c → hw/9pfs/9p-synth.c
+3 -3
View File
@@ -13,10 +13,10 @@
*/
#include "hw/virtio/virtio.h"
#include "virtio-9p.h"
#include "virtio-9p-xattr.h"
#include "9p.h"
#include "9p-xattr.h"
#include "fsdev/qemu-fsdev.h"
#include "virtio-9p-synth.h"
#include "9p-synth.h"
#include "qemu/rcu.h"
#include "qemu/rcu_queue.h"
#include <sys/stat.h>
hw/9pfs/virtio-9p-synth.h → hw/9pfs/9p-synth.h
+3 -3
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p
* 9p
*
* Copyright IBM, Corp. 2011
*
@@ -10,8 +10,8 @@
* the COPYING file in the top-level directory.
*
*/
#ifndef HW_9PFS_VIRTIO9P_SYNTH_H
#define HW_9PFS_VIRTIO9P_SYNTH_H 1
#ifndef HW_9PFS_SYNTH_H
#define HW_9PFS_SYNTH_H 1
#include <unistd.h>
#include <sys/types.h>
hw/9pfs/virtio-9p-xattr-user.c → hw/9pfs/9p-xattr-user.c
+3 -4
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p user. xattr callback
* 9p user. xattr callback
*
* Copyright IBM, Corp. 2010
*
@@ -12,10 +12,9 @@
*/
#include <sys/types.h>
#include "hw/virtio/virtio.h"
#include "virtio-9p.h"
#include "9p.h"
#include "fsdev/file-op-9p.h"
#include "virtio-9p-xattr.h"
#include "9p-xattr.h"
static ssize_t mp_user_getxattr(FsContext *ctx, const char *path,
hw/9pfs/virtio-9p-xattr.c → hw/9pfs/9p-xattr.c
+3 -4
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p xattr callback
* 9p xattr callback
*
* Copyright IBM, Corp. 2010
*
@@ -11,10 +11,9 @@
*
*/
#include "hw/virtio/virtio.h"
#include "virtio-9p.h"
#include "9p.h"
#include "fsdev/file-op-9p.h"
#include "virtio-9p-xattr.h"
#include "9p-xattr.h"
static XattrOperations *get_xattr_operations(XattrOperations **h,
hw/9pfs/virtio-9p-xattr.h → hw/9pfs/9p-xattr.h
+3 -3
View File
@@ -1,5 +1,5 @@
/*
* Virtio 9p
* 9p
*
* Copyright IBM, Corp. 2010
*
@@ -10,8 +10,8 @@
* the COPYING file in the top-level directory.
*
*/
#ifndef _QEMU_VIRTIO_9P_XATTR_H
#define _QEMU_VIRTIO_9P_XATTR_H
#ifndef _QEMU_9P_XATTR_H
#define _QEMU_9P_XATTR_H
#include "qemu/xattr.h"
hw/9pfs/virtio-9p.c → hw/9pfs/9p.c
+174 -96
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File diff suppressed because it is too large Load Diff
hw/9pfs/9p.h
+326
View File
@@ -0,0 +1,326 @@
#ifndef _QEMU_9P_H
#define _QEMU_9P_H
#include <sys/types.h>
#include <dirent.h>
#include <sys/time.h>
#include <utime.h>
#include <sys/resource.h>
#include <glib.h>
#include "standard-headers/linux/virtio_9p.h"
#include "hw/virtio/virtio.h"
#include "fsdev/file-op-9p.h"
#include "fsdev/9p-iov-marshal.h"
#include "qemu/thread.h"
#include "qemu/coroutine.h"
enum {
P9_TLERROR = 6,
P9_RLERROR,
P9_TSTATFS = 8,
P9_RSTATFS,
P9_TLOPEN = 12,
P9_RLOPEN,
P9_TLCREATE = 14,
P9_RLCREATE,
P9_TSYMLINK = 16,
P9_RSYMLINK,
P9_TMKNOD = 18,
P9_RMKNOD,
P9_TRENAME = 20,
P9_RRENAME,
P9_TREADLINK = 22,
P9_RREADLINK,
P9_TGETATTR = 24,
P9_RGETATTR,
P9_TSETATTR = 26,
P9_RSETATTR,
P9_TXATTRWALK = 30,
P9_RXATTRWALK,
P9_TXATTRCREATE = 32,
P9_RXATTRCREATE,
P9_TREADDIR = 40,
P9_RREADDIR,
P9_TFSYNC = 50,
P9_RFSYNC,
P9_TLOCK = 52,
P9_RLOCK,
P9_TGETLOCK = 54,
P9_RGETLOCK,
P9_TLINK = 70,
P9_RLINK,
P9_TMKDIR = 72,
P9_RMKDIR,
P9_TRENAMEAT = 74,
P9_RRENAMEAT,
P9_TUNLINKAT = 76,
P9_RUNLINKAT,
P9_TVERSION = 100,
P9_RVERSION,
P9_TAUTH = 102,
P9_RAUTH,
P9_TATTACH = 104,
P9_RATTACH,
P9_TERROR = 106,
P9_RERROR,
P9_TFLUSH = 108,
P9_RFLUSH,
P9_TWALK = 110,
P9_RWALK,
P9_TOPEN = 112,
P9_ROPEN,
P9_TCREATE = 114,
P9_RCREATE,
P9_TREAD = 116,
P9_RREAD,
P9_TWRITE = 118,
P9_RWRITE,
P9_TCLUNK = 120,
P9_RCLUNK,
P9_TREMOVE = 122,
P9_RREMOVE,
P9_TSTAT = 124,
P9_RSTAT,
P9_TWSTAT = 126,
P9_RWSTAT,
};
/* qid.types */
enum {
P9_QTDIR = 0x80,
P9_QTAPPEND = 0x40,
P9_QTEXCL = 0x20,
P9_QTMOUNT = 0x10,
P9_QTAUTH = 0x08,
P9_QTTMP = 0x04,
P9_QTSYMLINK = 0x02,
P9_QTLINK = 0x01,
P9_QTFILE = 0x00,
};
enum p9_proto_version {
V9FS_PROTO_2000U = 0x01,
V9FS_PROTO_2000L = 0x02,
};
#define P9_NOTAG (u16)(~0)
#define P9_NOFID (u32)(~0)
#define P9_MAXWELEM 16
#define FID_REFERENCED 0x1
#define FID_NON_RECLAIMABLE 0x2
static inline char *rpath(FsContext *ctx, const char *path)
{
return g_strdup_printf("%s/%s", ctx->fs_root, path);
}
/*
* ample room for Twrite/Rread header
* size[4] Tread/Twrite tag[2] fid[4] offset[8] count[4]
*/
#define P9_IOHDRSZ 24
typedef struct V9fsPDU V9fsPDU;
struct V9fsState;
struct V9fsPDU
{
uint32_t size;
uint16_t tag;
uint8_t id;
uint8_t cancelled;
CoQueue complete;
struct V9fsState *s;
QLIST_ENTRY(V9fsPDU) next;
uint32_t idx;
};
/* FIXME
* 1) change user needs to set groups and stuff
*/
#define MAX_REQ 128
#define MAX_TAG_LEN 32
#define BUG_ON(cond) assert(!(cond))
typedef struct V9fsFidState V9fsFidState;
enum {
P9_FID_NONE = 0,
P9_FID_FILE,
P9_FID_DIR,
P9_FID_XATTR,
};
typedef struct V9fsConf
{
/* tag name for the device */
char *tag;
char *fsdev_id;
} V9fsConf;
typedef struct V9fsXattr
{
int64_t copied_len;
int64_t len;
void *value;
V9fsString name;
int flags;
} V9fsXattr;
/*
* Filled by fs driver on open and other
* calls.
*/
union V9fsFidOpenState {
int fd;
DIR *dir;
V9fsXattr xattr;
/*
* private pointer for fs drivers, that
* have its own internal representation of
* open files.
*/
void *private;
};
struct V9fsFidState
{
int fid_type;
int32_t fid;
V9fsPath path;
V9fsFidOpenState fs;
V9fsFidOpenState fs_reclaim;
int flags;
int open_flags;
uid_t uid;
int ref;
int clunked;
V9fsFidState *next;
V9fsFidState *rclm_lst;
};
typedef struct V9fsState
{
QLIST_HEAD(, V9fsPDU) free_list;
QLIST_HEAD(, V9fsPDU) active_list;
V9fsFidState *fid_list;
FileOperations *ops;
FsContext ctx;
char *tag;
enum p9_proto_version proto_version;
int32_t msize;
/*
* lock ensuring atomic path update
* on rename.
*/
CoRwlock rename_lock;
int32_t root_fid;
Error *migration_blocker;
V9fsConf fsconf;
} V9fsState;
/* 9p2000.L open flags */
#define P9_DOTL_RDONLY 00000000
#define P9_DOTL_WRONLY 00000001
#define P9_DOTL_RDWR 00000002
#define P9_DOTL_NOACCESS 00000003
#define P9_DOTL_CREATE 00000100
#define P9_DOTL_EXCL 00000200
#define P9_DOTL_NOCTTY 00000400
#define P9_DOTL_TRUNC 00001000
#define P9_DOTL_APPEND 00002000
#define P9_DOTL_NONBLOCK 00004000
#define P9_DOTL_DSYNC 00010000
#define P9_DOTL_FASYNC 00020000
#define P9_DOTL_DIRECT 00040000
#define P9_DOTL_LARGEFILE 00100000
#define P9_DOTL_DIRECTORY 00200000
#define P9_DOTL_NOFOLLOW 00400000
#define P9_DOTL_NOATIME 01000000
#define P9_DOTL_CLOEXEC 02000000
#define P9_DOTL_SYNC 04000000
/* 9p2000.L at flags */
#define P9_DOTL_AT_REMOVEDIR 0x200
/* 9P2000.L lock type */
#define P9_LOCK_TYPE_RDLCK 0
#define P9_LOCK_TYPE_WRLCK 1
#define P9_LOCK_TYPE_UNLCK 2
#define P9_LOCK_SUCCESS 0
#define P9_LOCK_BLOCKED 1
#define P9_LOCK_ERROR 2
#define P9_LOCK_GRACE 3
#define P9_LOCK_FLAGS_BLOCK 1
#define P9_LOCK_FLAGS_RECLAIM 2
typedef struct V9fsFlock
{
uint8_t type;
uint32_t flags;
uint64_t start; /* absolute offset */
uint64_t length;
uint32_t proc_id;
V9fsString client_id;
} V9fsFlock;
typedef struct V9fsGetlock
{
uint8_t type;
uint64_t start; /* absolute offset */
uint64_t length;
uint32_t proc_id;
V9fsString client_id;
} V9fsGetlock;
extern int open_fd_hw;
extern int total_open_fd;
static inline void v9fs_path_write_lock(V9fsState *s)
{
if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
qemu_co_rwlock_wrlock(&s->rename_lock);
}
}
static inline void v9fs_path_read_lock(V9fsState *s)
{
if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
qemu_co_rwlock_rdlock(&s->rename_lock);
}
}
static inline void v9fs_path_unlock(V9fsState *s)
{
if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) {
qemu_co_rwlock_unlock(&s->rename_lock);
}
}
static inline uint8_t v9fs_request_cancelled(V9fsPDU *pdu)
{
return pdu->cancelled;
}
extern void v9fs_reclaim_fd(V9fsPDU *pdu);
extern void v9fs_path_init(V9fsPath *path);
extern void v9fs_path_free(V9fsPath *path);
extern void v9fs_path_copy(V9fsPath *lhs, V9fsPath *rhs);
extern int v9fs_name_to_path(V9fsState *s, V9fsPath *dirpath,
const char *name, V9fsPath *path);
extern int v9fs_device_realize_common(V9fsState *s, Error **errp);
extern void v9fs_device_unrealize_common(V9fsState *s, Error **errp);
ssize_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...);
ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...);
V9fsPDU *pdu_alloc(V9fsState *s);
void pdu_free(V9fsPDU *pdu);
void pdu_submit(V9fsPDU *pdu);
#endif
hw/9pfs/Makefile.objs
+7 -7
View File
@@ -1,9 +1,9 @@
common-obj-y = virtio-9p.o
common-obj-y += virtio-9p-local.o virtio-9p-xattr.o
common-obj-y += virtio-9p-xattr-user.o virtio-9p-posix-acl.o
common-obj-y += virtio-9p-coth.o cofs.o codir.o cofile.o
common-obj-y += coxattr.o virtio-9p-synth.o
common-obj-$(CONFIG_OPEN_BY_HANDLE) += virtio-9p-handle.o
common-obj-y += virtio-9p-proxy.o
common-obj-y = 9p.o
common-obj-y += 9p-local.o 9p-xattr.o
common-obj-y += 9p-xattr-user.o 9p-posix-acl.o
common-obj-y += coth.o cofs.o codir.o cofile.o
common-obj-y += coxattr.o 9p-synth.o
common-obj-$(CONFIG_OPEN_BY_HANDLE) += 9p-handle.o
common-obj-y += 9p-proxy.o
obj-y += virtio-9p-device.o

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