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drivers
gpu
drm
nouveau
core
core
option.c
Go to the documentation of this file.
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/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include <
core/option.h
>
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#include <core/debug.h>
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/* compares unterminated string 'str' with zero-terminated string 'cmp' */
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static
inline
int
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strncasecmpz(
const
char
*
str
,
const
char
*cmp,
size_t
len)
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{
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if
(
strlen
(cmp) != len)
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return
len;
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return
strncasecmp
(str, cmp, len);
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}
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const
char
*
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nouveau_stropt
(
const
char
*optstr,
const
char
*
opt
,
int
*arglen)
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{
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while
(optstr && *optstr !=
'\0'
) {
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int
len =
strcspn
(optstr,
",="
);
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switch
(optstr[len]) {
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case
'='
:
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if
(!strncasecmpz(optstr, opt, len)) {
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optstr += len + 1;
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*arglen =
strcspn
(optstr,
",="
);
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return
*arglen ? optstr :
NULL
;
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}
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optstr++;
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break
;
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case
','
:
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optstr++;
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break
;
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default
:
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break
;
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}
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optstr += len;
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}
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return
NULL
;
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}
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bool
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nouveau_boolopt
(
const
char
*optstr,
const
char
*
opt
,
bool
value
)
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{
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int
arglen;
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optstr =
nouveau_stropt
(optstr, opt, &arglen);
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if
(optstr) {
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if
(!strncasecmpz(optstr,
"0"
, arglen) ||
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!strncasecmpz(optstr,
"no"
, arglen) ||
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!strncasecmpz(optstr,
"off"
, arglen) ||
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!strncasecmpz(optstr,
"false"
, arglen))
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value =
false
;
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else
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if
(!strncasecmpz(optstr,
"1"
, arglen) ||
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!strncasecmpz(optstr,
"yes"
, arglen) ||
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!strncasecmpz(optstr,
"on"
, arglen) ||
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!strncasecmpz(optstr,
"true"
, arglen))
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value =
true
;
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}
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return
value
;
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}
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int
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nouveau_dbgopt
(
const
char
*optstr,
const
char
*sub)
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{
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int
mode
= 1,
level
= CONFIG_NOUVEAU_DEBUG_DEFAULT;
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while
(optstr) {
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int
len =
strcspn
(optstr,
",="
);
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switch
(optstr[len]) {
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case
'='
:
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if
(strncasecmpz(optstr, sub, len))
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mode = 0;
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optstr++;
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break
;
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default
:
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if
(mode) {
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if
(!strncasecmpz(optstr,
"fatal"
, len))
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level
=
NV_DBG_FATAL
;
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else
if
(!strncasecmpz(optstr,
"error"
, len))
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level
=
NV_DBG_ERROR
;
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else
if
(!strncasecmpz(optstr,
"warn"
, len))
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level
=
NV_DBG_WARN
;
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else
if
(!strncasecmpz(optstr,
"info"
, len))
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level
=
NV_DBG_INFO
;
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else
if
(!strncasecmpz(optstr,
"debug"
, len))
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level
=
NV_DBG_DEBUG
;
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else
if
(!strncasecmpz(optstr,
"trace"
, len))
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level
=
NV_DBG_TRACE
;
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else
if
(!strncasecmpz(optstr,
"paranoia"
, len))
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level
=
NV_DBG_PARANOIA
;
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else
if
(!strncasecmpz(optstr,
"spam"
, len))
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level
=
NV_DBG_SPAM
;
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}
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if
(optstr[len] !=
'\0'
) {
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optstr++;
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mode = 1;
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break
;
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}
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return
level
;
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}
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optstr += len;
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}
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return
level
;
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}
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