164 lines
3.3 KiB
C
164 lines
3.3 KiB
C
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/*
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* Virtio 9p backend
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*
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* Copyright IBM, Corp. 2011
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*
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* Authors:
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* Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#include "fsdev/qemu-fsdev.h"
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#include "qemu-thread.h"
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#include "qemu-coroutine.h"
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#include "virtio-9p-coth.h"
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int v9fs_co_lstat(V9fsState *s, V9fsString *path, struct stat *stbuf)
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{
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int err;
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v9fs_co_run_in_worker(
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{
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err = s->ops->lstat(&s->ctx, path->data, stbuf);
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if (err < 0) {
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err = -errno;
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}
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});
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return err;
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}
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int v9fs_co_fstat(V9fsState *s, int fd, struct stat *stbuf)
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{
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int err;
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v9fs_co_run_in_worker(
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{
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err = s->ops->fstat(&s->ctx, fd, stbuf);
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if (err < 0) {
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err = -errno;
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}
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});
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return err;
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}
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int v9fs_co_open(V9fsState *s, V9fsFidState *fidp, int flags)
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{
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int err;
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v9fs_co_run_in_worker(
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{
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fidp->fs.fd = s->ops->open(&s->ctx, fidp->path.data, flags);
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if (fidp->fs.fd == -1) {
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err = -errno;
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} else {
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err = 0;
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}
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});
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return err;
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}
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int v9fs_co_open2(V9fsState *s, V9fsFidState *fidp, char *fullname, gid_t gid,
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int flags, int mode)
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{
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int err;
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FsCred cred;
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cred_init(&cred);
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cred.fc_mode = mode & 07777;
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cred.fc_uid = fidp->uid;
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cred.fc_gid = gid;
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v9fs_co_run_in_worker(
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{
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fidp->fs.fd = s->ops->open2(&s->ctx, fullname, flags, &cred);
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err = 0;
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if (fidp->fs.fd == -1) {
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err = -errno;
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}
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});
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return err;
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}
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int v9fs_co_close(V9fsState *s, V9fsFidState *fidp)
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{
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int fd;
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int err;
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fd = fidp->fs.fd;
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v9fs_co_run_in_worker(
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{
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err = s->ops->close(&s->ctx, fd);
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if (err < 0) {
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err = -errno;
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}
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});
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return err;
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}
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int v9fs_co_fsync(V9fsState *s, V9fsFidState *fidp, int datasync)
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{
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int fd;
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int err;
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fd = fidp->fs.fd;
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v9fs_co_run_in_worker(
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{
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err = s->ops->fsync(&s->ctx, fd, datasync);
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if (err < 0) {
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err = -errno;
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}
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});
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return err;
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}
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int v9fs_co_link(V9fsState *s, V9fsString *oldpath, V9fsString *newpath)
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{
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int err;
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v9fs_co_run_in_worker(
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{
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err = s->ops->link(&s->ctx, oldpath->data, newpath->data);
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if (err < 0) {
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err = -errno;
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}
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});
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return err;
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}
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int v9fs_co_pwritev(V9fsState *s, V9fsFidState *fidp,
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struct iovec *iov, int iovcnt, int64_t offset)
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{
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int fd;
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int err;
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fd = fidp->fs.fd;
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v9fs_co_run_in_worker(
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{
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err = s->ops->pwritev(&s->ctx, fd, iov, iovcnt, offset);
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if (err < 0) {
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err = -errno;
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}
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});
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return err;
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}
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int v9fs_co_preadv(V9fsState *s, V9fsFidState *fidp,
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struct iovec *iov, int iovcnt, int64_t offset)
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{
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int fd;
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int err;
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fd = fidp->fs.fd;
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v9fs_co_run_in_worker(
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{
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err = s->ops->preadv(&s->ctx, fd, iov, iovcnt, offset);
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if (err < 0) {
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err = -errno;
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}
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});
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return err;
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}
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