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hw/9pfs: Implement TFLUSH operation

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Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This commit is contained in:
Aneesh Kumar K.V 2011-08-02 11:36:17 +05:30
parent ce421a1961
commit bccacf6c79
8 changed files with 439 additions and 265 deletions
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68
hw/9pfs/cofile.c
View file

@ -17,10 +17,14 @@
#include "qemu-coroutine.h"
#include "virtio-9p-coth.h"
int v9fs_co_lstat(V9fsState *s, V9fsPath *path, struct stat *stbuf)
int v9fs_co_lstat(V9fsPDU *pdu, V9fsPath *path, struct stat *stbuf)
{
int err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
v9fs_path_read_lock(s);
v9fs_co_run_in_worker(
{
@ -33,10 +37,14 @@ int v9fs_co_lstat(V9fsState *s, V9fsPath *path, struct stat *stbuf)
return err;
}
int v9fs_co_fstat(V9fsState *s, int fd, struct stat *stbuf)
int v9fs_co_fstat(V9fsPDU *pdu, int fd, struct stat *stbuf)
{
int err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
v9fs_co_run_in_worker(
{
err = s->ops->fstat(&s->ctx, fd, stbuf);
@ -47,10 +55,14 @@ int v9fs_co_fstat(V9fsState *s, int fd, struct stat *stbuf)
return err;
}
int v9fs_co_open(V9fsState *s, V9fsFidState *fidp, int flags)
int v9fs_co_open(V9fsPDU *pdu, V9fsFidState *fidp, int flags)
{
int err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
v9fs_path_read_lock(s);
v9fs_co_run_in_worker(
{
@ -65,20 +77,23 @@ int v9fs_co_open(V9fsState *s, V9fsFidState *fidp, int flags)
if (!err) {
total_open_fd++;
if (total_open_fd > open_fd_hw) {
v9fs_reclaim_fd(s);
v9fs_reclaim_fd(pdu);
}
}
return err;
}
int v9fs_co_open2(V9fsState *s, V9fsFidState *fidp, V9fsString *name, gid_t gid,
int v9fs_co_open2(V9fsPDU *pdu, V9fsFidState *fidp, V9fsString *name, gid_t gid,
int flags, int mode, struct stat *stbuf)
{
int err;
FsCred cred;
V9fsPath path;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
cred_init(&cred);
cred.fc_mode = mode & 07777;
cred.fc_uid = fidp->uid;
@ -116,16 +131,20 @@ int v9fs_co_open2(V9fsState *s, V9fsFidState *fidp, V9fsString *name, gid_t gid,
if (!err) {
total_open_fd++;
if (total_open_fd > open_fd_hw) {
v9fs_reclaim_fd(s);
v9fs_reclaim_fd(pdu);
}
}
return err;
}
int v9fs_co_close(V9fsState *s, int fd)
int v9fs_co_close(V9fsPDU *pdu, int fd)
{
int err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
v9fs_co_run_in_worker(
{
err = s->ops->close(&s->ctx, fd);
@ -139,11 +158,14 @@ int v9fs_co_close(V9fsState *s, int fd)
return err;
}
int v9fs_co_fsync(V9fsState *s, V9fsFidState *fidp, int datasync)
int v9fs_co_fsync(V9fsPDU *pdu, V9fsFidState *fidp, int datasync)
{
int fd;
int err;
int fd, err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
fd = fidp->fs.fd;
v9fs_co_run_in_worker(
{
@ -155,11 +177,15 @@ int v9fs_co_fsync(V9fsState *s, V9fsFidState *fidp, int datasync)
return err;
}
int v9fs_co_link(V9fsState *s, V9fsFidState *oldfid,
int v9fs_co_link(V9fsPDU *pdu, V9fsFidState *oldfid,
V9fsFidState *newdirfid, V9fsString *name)
{
int err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
v9fs_path_read_lock(s);
v9fs_co_run_in_worker(
{
@ -173,12 +199,15 @@ int v9fs_co_link(V9fsState *s, V9fsFidState *oldfid,
return err;
}
int v9fs_co_pwritev(V9fsState *s, V9fsFidState *fidp,
int v9fs_co_pwritev(V9fsPDU *pdu, V9fsFidState *fidp,
struct iovec *iov, int iovcnt, int64_t offset)
{
int fd;
int err;
int fd, err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
fd = fidp->fs.fd;
v9fs_co_run_in_worker(
{
@ -190,12 +219,15 @@ int v9fs_co_pwritev(V9fsState *s, V9fsFidState *fidp,
return err;
}
int v9fs_co_preadv(V9fsState *s, V9fsFidState *fidp,
int v9fs_co_preadv(V9fsPDU *pdu, V9fsFidState *fidp,
struct iovec *iov, int iovcnt, int64_t offset)
{
int fd;
int err;
int fd, err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
fd = fidp->fs.fd;
v9fs_co_run_in_worker(
{