cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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umid.c (740B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
      4 */
      5
      6#include <asm/errno.h>
      7#include <init.h>
      8#include <kern.h>
      9#include <os.h>
     10
     11/* Changed by set_umid_arg */
     12static int umid_inited = 0;
     13
     14static int __init set_umid_arg(char *name, int *add)
     15{
     16	int err;
     17
     18	if (umid_inited) {
     19		os_warn("umid already set\n");
     20		return 0;
     21	}
     22
     23	*add = 0;
     24	err = set_umid(name);
     25	if (err == -EEXIST)
     26		os_warn("umid '%s' already in use\n", name);
     27	else if (!err)
     28		umid_inited = 1;
     29
     30	return 0;
     31}
     32
     33__uml_setup("umid=", set_umid_arg,
     34"umid=<name>\n"
     35"    This is used to assign a unique identity to this UML machine and\n"
     36"    is used for naming the pid file and management console socket.\n\n"
     37);
     38