static void cephwrap_disconnect(struct vfs_handle_struct *handle)
{
int ret;
if (!cmount) {
DBG_ERR("[CEPH] Error, ceph not mounted\n");
return;
}
/* Should we unmount/shutdown? Only if the last disconnect? */
if (--cmount_cnt) {
DBG_DEBUG("[CEPH] Not shuting down CEPH because still more connections\n");
return;
}
ret = ceph_unmount(cmount);
if (ret < 0) {
DBG_ERR("[CEPH] failed to unmount: %s\n", strerror(-ret));
}
ret = ceph_release(cmount);
if (ret < 0) {
DBG_ERR("[CEPH] failed to release: %s\n", strerror(-ret));
}
cmount = NULL; /* Make it safe */
}
struct ceph_mount_info* cfs_mount(const char* _mons, const char* _id, const char* _keyring_file, const char* _root)
{
struct ceph_mount_info* ret = NULL;
if (unlikely(ceph_create(&ret, _id) != 0))
goto out;
if (unlikely(ceph_conf_set(ret, "mon_host", _mons) != 0))
goto err_release;
if (unlikely(ceph_conf_set(ret, "keyring", _keyring_file) != 0))
goto err_release;
if (unlikely(ceph_init(ret) != 0))
goto err_release;
if (unlikely(ceph_mount(ret, _root) != 0))
goto err_release;
goto out;
err_release:
ceph_release(ret);
ret = NULL;
out:
return ret;
}
int cfs_unmount(struct ceph_mount_info* _fs)
{
int ret = -1;
if (unlikely(ceph_unmount(_fs) != 0))
return ret;
if (unlikely(ceph_release(_fs) != 0))
return ret;
return 0;
}
static int cephwrap_connect(struct vfs_handle_struct *handle, const char *service, const char *user)
{
int ret;
char buf[256];
int snum = SNUM(handle->conn);
const char *conf_file;
const char *user_id;
if (cmount) {
handle->data = cmount; /* We have been here before */
cmount_cnt++;
return 0;
}
/* if config_file and/or user_id are NULL, ceph will use defaults */
conf_file = lp_parm_const_string(snum, "ceph", "config_file", NULL);
user_id = lp_parm_const_string(snum, "ceph", "user_id", NULL);
DBG_DEBUG("[CEPH] calling: ceph_create\n");
ret = ceph_create(&cmount, user_id);
if (ret) {
goto err_out;
}
DBG_DEBUG("[CEPH] calling: ceph_conf_read_file with %s\n",
(conf_file == NULL ? "default path" : conf_file));
ret = ceph_conf_read_file(cmount, conf_file);
if (ret) {
goto err_cm_release;
}
DBG_DEBUG("[CEPH] calling: ceph_conf_get\n");
ret = ceph_conf_get(cmount, "log file", buf, sizeof(buf));
if (ret < 0) {
goto err_cm_release;
}
DBG_DEBUG("[CEPH] calling: ceph_mount\n");
ret = ceph_mount(cmount, NULL);
if (ret < 0) {
goto err_cm_release;
}
/*
* encode mount context/state into our vfs/connection holding structure
* cmount is a ceph_mount_t*
*/
handle->data = cmount;
cmount_cnt++;
return 0;
err_cm_release:
ceph_release(cmount);
cmount = NULL;
err_out:
/*
* Handle the error correctly. Ceph returns -errno.
*/
DBG_DEBUG("[CEPH] Error return: %s\n", strerror(-ret));
WRAP_RETURN(ret);
}