qemu/hw/9pfs/cofile.c

/*
 * Virtio 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.
 *
 */

#include "fsdev/qemu-fsdev.h"
#include "qemu-thread.h"
#include "qemu-coroutine.h"
#include "virtio-9p-coth.h"

int v9fs_co_lstat(V9fsState *s, V9fsString *path, struct stat *stbuf)
{
    int err;

    v9fs_co_run_in_worker(
        {
            err = s->ops->lstat(&s->ctx, path->data, stbuf);
            if (err < 0) {
                err = -errno;
            }
        });
    return err;
}

int v9fs_co_fstat(V9fsState *s, int fd, struct stat *stbuf)
{
    int err;

    v9fs_co_run_in_worker(
        {
            err = s->ops->fstat(&s->ctx, fd, stbuf);
            if (err < 0) {
                err = -errno;
            }
        });
    return err;
}

int v9fs_co_open(V9fsState *s, V9fsFidState *fidp, int flags)
{
    int err;

    v9fs_co_run_in_worker(
        {
            fidp->fs.fd = s->ops->open(&s->ctx, fidp->path.data, flags);
            if (fidp->fs.fd == -1) {
                err = -errno;
            } else {
                err = 0;
            }
        });
    return err;
}