static int libcfs_ioctl(struct cfs_psdev_file *pfile,
unsigned long cmd, void *arg)
{
char *buf;
struct libcfs_ioctl_data *data;
int err = 0;
ENTRY;
LIBCFS_ALLOC_GFP(buf, 1024, GFP_IOFS);
if (buf == NULL)
RETURN(-ENOMEM);
/* 'cmd' and permissions get checked in our arch-specific caller */
if (libcfs_ioctl_getdata(buf, buf + 800, (void *)arg)) {
CERROR("PORTALS ioctl: data error\n");
GOTO(out, err = -EINVAL);
}
data = (struct libcfs_ioctl_data *)buf;
err = libcfs_ioctl_int(pfile, cmd, arg, data);
out:
LIBCFS_FREE(buf, 1024);
RETURN(err);
}
int libcfs_ioctl(unsigned long cmd, void __user *uparam)
{
struct libcfs_ioctl_data *data = NULL;
struct libcfs_ioctl_hdr *hdr;
int err;
/* 'cmd' and permissions get checked in our arch-specific caller */
err = libcfs_ioctl_getdata(&hdr, uparam);
if (err) {
CDEBUG_LIMIT(D_ERROR,
"libcfs ioctl: data header error %d\n", err);
return err;
}
if (hdr->ioc_version == LIBCFS_IOCTL_VERSION) {
/*
* The libcfs_ioctl_data_adjust() function performs adjustment
* operations on the libcfs_ioctl_data structure to make
* it usable by the code. This doesn't need to be called
* for new data structures added.
*/
data = container_of(hdr, struct libcfs_ioctl_data, ioc_hdr);
err = libcfs_ioctl_data_adjust(data);
if (err)
goto out;
}
