static dlm_lshandle_t create_lockspace(const char *name, mode_t mode,
uint32_t flags)
{
char dev_path[PATH_MAX];
char udev_path[PATH_MAX];
struct dlm_ls_info *newls;
int error, saved_errno, minor;
/* We use the control device for creating lockspaces. */
if (open_control_device())
return NULL;
newls = malloc(sizeof(struct dlm_ls_info));
if (!newls)
return NULL;
ls_dev_name(name, dev_path, sizeof(dev_path));
if (kernel_version.version[0] == 5)
minor = create_lockspace_v5(name, flags);
else
minor = create_lockspace_v6(name, flags);
if (minor < 0)
goto fail;
/* Wait for udev to create the device; the device it creates may
have a truncated name due to the sysfs device name limit. */
error = find_udev_device(name, minor, udev_path);
if (error)
goto fail;
/* If the symlink already exists, find_udev_device() will return
it and we'll skip this. */
if (strcmp(dev_path, udev_path)) {
error = symlink(udev_path, dev_path);
if (error)
goto fail;
}
/* Open it and return the struct as a handle */
newls->fd = open(dev_path, O_RDWR);
if (newls->fd == -1)
goto fail;
if (mode)
fchmod(newls->fd, mode);
newls->tid = 0;
fcntl(newls->fd, F_SETFD, 1);
return (dlm_lshandle_t)newls;
fail:
saved_errno = errno;
free(newls);
errno = saved_errno;
return NULL;
}
int setup_misc_devices(void)
{
int rv;
find_minors();
if (control_minor) {
rv = find_udev_device("/dev/misc/dlm-control", control_minor);
if (rv < 0)
return rv;
log_debug("found /dev/misc/dlm-control minor %u",
control_minor);
}
if (monitor_minor) {
rv = find_udev_device("/dev/misc/dlm-monitor", monitor_minor);
if (rv < 0)
return rv;
log_debug("found /dev/misc/dlm-monitor minor %u",
monitor_minor);
}
if (plock_minor) {
rv = find_udev_device("/dev/misc/dlm_plock", plock_minor);
if (rv < 0)
return rv;
log_debug("found /dev/misc/dlm_plock minor %u",
plock_minor);
}
if (!plock_minor && old_plock_minor) {
rv = find_udev_device("/dev/misc/lock_dlm_plock",
old_plock_minor);
if (rv < 0)
return rv;
log_debug("found /dev/misc/lock_dlm_plock minor %u",
old_plock_minor);
}
return 0;
}
