cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

option.c (3590B)

      1/*
      2 * Copyright 2012 Red Hat Inc.
      3 *
      4 * Permission is hereby granted, free of charge, to any person obtaining a
      5 * copy of this software and associated documentation files (the "Software"),
      6 * to deal in the Software without restriction, including without limitation
      7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8 * and/or sell copies of the Software, and to permit persons to whom the
      9 * Software is furnished to do so, subject to the following conditions:
     10 *
     11 * The above copyright notice and this permission notice shall be included in
     12 * all copies or substantial portions of the Software.
     13 *
     14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     20 * OTHER DEALINGS IN THE SOFTWARE.
     21 *
     22 * Authors: Ben Skeggs
     23 */
     24#include <core/option.h>
     25#include <core/debug.h>
     26
     27const char *
     28nvkm_stropt(const char *optstr, const char *opt, int *arglen)
     29{
     30	while (optstr && *optstr != '\0') {
     31		int len = strcspn(optstr, ",=");
     32		switch (optstr[len]) {
     33		case '=':
     34			if (!strncasecmpz(optstr, opt, len)) {
     35				optstr += len + 1;
     36				*arglen = strcspn(optstr, ",=");
     37				return *arglen ? optstr : NULL;
     38			}
     39			optstr++;
     40			break;
     41		case ',':
     42			optstr++;
     43			break;
     44		default:
     45			break;
     46		}
     47		optstr += len;
     48	}
     49
     50	return NULL;
     51}
     52
     53bool
     54nvkm_boolopt(const char *optstr, const char *opt, bool value)
     55{
     56	int arglen;
     57
     58	optstr = nvkm_stropt(optstr, opt, &arglen);
     59	if (optstr) {
     60		if (!strncasecmpz(optstr, "0", arglen) ||
     61		    !strncasecmpz(optstr, "no", arglen) ||
     62		    !strncasecmpz(optstr, "off", arglen) ||
     63		    !strncasecmpz(optstr, "false", arglen))
     64			value = false;
     65		else
     66		if (!strncasecmpz(optstr, "1", arglen) ||
     67		    !strncasecmpz(optstr, "yes", arglen) ||
     68		    !strncasecmpz(optstr, "on", arglen) ||
     69		    !strncasecmpz(optstr, "true", arglen))
     70			value = true;
     71	}
     72
     73	return value;
     74}
     75
     76long
     77nvkm_longopt(const char *optstr, const char *opt, long value)
     78{
     79	long result = value;
     80	int arglen;
     81	char *s;
     82
     83	optstr = nvkm_stropt(optstr, opt, &arglen);
     84	if (optstr && (s = kstrndup(optstr, arglen, GFP_KERNEL))) {
     85		int ret = kstrtol(s, 0, &value);
     86		if (ret == 0)
     87			result = value;
     88		kfree(s);
     89	}
     90
     91	return result;
     92}
     93
     94int
     95nvkm_dbgopt(const char *optstr, const char *sub)
     96{
     97	int mode = 1, level = CONFIG_NOUVEAU_DEBUG_DEFAULT;
     98
     99	while (optstr) {
    100		int len = strcspn(optstr, ",=");
    101		switch (optstr[len]) {
    102		case '=':
    103			if (strncasecmpz(optstr, sub, len))
    104				mode = 0;
    105			optstr++;
    106			break;
    107		default:
    108			if (mode) {
    109				if (!strncasecmpz(optstr, "fatal", len))
    110					level = NV_DBG_FATAL;
    111				else if (!strncasecmpz(optstr, "error", len))
    112					level = NV_DBG_ERROR;
    113				else if (!strncasecmpz(optstr, "warn", len))
    114					level = NV_DBG_WARN;
    115				else if (!strncasecmpz(optstr, "info", len))
    116					level = NV_DBG_INFO;
    117				else if (!strncasecmpz(optstr, "debug", len))
    118					level = NV_DBG_DEBUG;
    119				else if (!strncasecmpz(optstr, "trace", len))
    120					level = NV_DBG_TRACE;
    121				else if (!strncasecmpz(optstr, "paranoia", len))
    122					level = NV_DBG_PARANOIA;
    123				else if (!strncasecmpz(optstr, "spam", len))
    124					level = NV_DBG_SPAM;
    125			}
    126
    127			if (optstr[len] != '\0') {
    128				optstr++;
    129				mode = 1;
    130				break;
    131			}
    132
    133			return level;
    134		}
    135		optstr += len;
    136	}
    137
    138	return level;
    139}