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/*
* 9p backend
*
* 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.
*
*/
/*
* Not so fast! You might want to read the 9p developer docs first:
* https://wiki.qemu.org/Documentation/9p
*/
#include "qemu/osdep.h"
#include "fsdev/qemu-fsdev.h"
#include "qemu/thread.h"
#include "qemu/main-loop.h"
#include "coth.h"
int coroutine_fn v9fs_co_llistxattr(V9fsPDU *pdu, V9fsPath *path, void *value,
size_t size)
{
int err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
v9fs_path_read_lock(s);
v9fs_co_run_in_worker(
{
err = s->ops->llistxattr(&s->ctx, path, value, size);
if (err < 0) {
err = -errno;
}
});
v9fs_path_unlock(s);
return err;
}
int coroutine_fn v9fs_co_lgetxattr(V9fsPDU *pdu, V9fsPath *path,
V9fsString *xattr_name, void *value,
size_t size)
{
int err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
v9fs_path_read_lock(s);
v9fs_co_run_in_worker(
{
err = s->ops->lgetxattr(&s->ctx, path,
xattr_name->data,
value, size);
if (err < 0) {
err = -errno;
}
});
v9fs_path_unlock(s);
return err;
}
int coroutine_fn v9fs_co_lsetxattr(V9fsPDU *pdu, V9fsPath *path,
V9fsString *xattr_name, void *value,
size_t size, 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(
{
err = s->ops->lsetxattr(&s->ctx, path,
xattr_name->data, value,
size, flags);
if (err < 0) {
err = -errno;
}
});
v9fs_path_unlock(s);
return err;
}
int coroutine_fn v9fs_co_lremovexattr(V9fsPDU *pdu, V9fsPath *path,
V9fsString *xattr_name)
{
int err;
V9fsState *s = pdu->s;
if (v9fs_request_cancelled(pdu)) {
return -EINTR;
}
v9fs_path_read_lock(s);
v9fs_co_run_in_worker(
{
err = s->ops->lremovexattr(&s->ctx, path, xattr_name->data);
if (err < 0) {
err = -errno;
}
});
v9fs_path_unlock(s);
return err;
}
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