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/*
* 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_readlink(V9fsState *s, V9fsString *path, V9fsString *buf)
{
int err;
ssize_t len;
buf->data = qemu_malloc(PATH_MAX);
v9fs_co_run_in_worker(
{
len = s->ops->readlink(&s->ctx, path->data,
buf->data, PATH_MAX - 1);
if (len > -1) {
buf->size = len;
buf->data[len] = 0;
err = 0;
} else {
err = -errno;
}
});
if (err) {
qemu_free(buf->data);
buf->data = NULL;
buf->size = 0;
}
return err;
}
int v9fs_co_statfs(V9fsState *s, V9fsString *path, struct statfs *stbuf)
{
int err;
v9fs_co_run_in_worker(
{
err = s->ops->statfs(&s->ctx, path->data, stbuf);
if (err < 0) {
err = -errno;
}
});
return err;
}
int v9fs_co_chmod(V9fsState *s, V9fsString *path, mode_t mode)
{
int err;
FsCred cred;
cred_init(&cred);
cred.fc_mode = mode;
v9fs_co_run_in_worker(
{
err = s->ops->chmod(&s->ctx, path->data, &cred);
if (err < 0) {
err = -errno;
}
});
return err;
}
int v9fs_co_utimensat(V9fsState *s, V9fsString *path,
struct timespec times[2])
{
int err;
v9fs_co_run_in_worker(
{
err = s->ops->utimensat(&s->ctx, path->data, times);
if (err < 0) {
err = -errno;
}
});
return err;
}
int v9fs_co_chown(V9fsState *s, V9fsString *path, uid_t uid, gid_t gid)
{
int err;
FsCred cred;
cred_init(&cred);
cred.fc_uid = uid;
cred.fc_gid = gid;
v9fs_co_run_in_worker(
{
err = s->ops->chown(&s->ctx, path->data, &cred);
if (err < 0) {
err = -errno;
}
});
return err;
}
int v9fs_co_truncate(V9fsState *s, V9fsString *path, off_t size)
{
int err;
v9fs_co_run_in_worker(
{
err = s->ops->truncate(&s->ctx, path->data, size);
if (err < 0) {
err = -errno;
}
});
return err;
}
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