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From: Kalle Valo <kvalo@codeaurora.org>
To: Hans de Goede <hdegoede@redhat.com>
Cc: Victor Bravo <1905@spmblk.com>,
	Arend Van Spriel <arend.vanspriel@broadcom.com>,
	Franky Lin <franky.lin@broadcom.com>,
	Hante Meuleman <hante.meuleman@broadcom.com>,
	Chi-Hsien Lin <chi-hsien.lin@cypress.com>,
	Wright Feng <wright.feng@cypress.com>,
	"David S. Miller" <davem@davemloft.net>,
	linux-wireless@vger.kernel.org,
	brcm80211-dev-list.pdl@broadcom.com,
	brcm80211-dev-list@cypress.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC] brcmfmac: sanitize DMI strings v2
Date: Mon, 06 May 2019 11:42:06 +0300	[thread overview]
Message-ID: <87o94gug81.fsf@codeaurora.org> (raw)
In-Reply-To: <0f75a3d4-94af-5503-94c3-e8af2364448d@redhat.com> (Hans de Goede's message of "Mon, 6 May 2019 10:13:38 +0200")

Hans de Goede <hdegoede@redhat.com> writes:

>> @@ -99,6 +107,15 @@ static const struct dmi_system_id dmi_platform_data[] = {
>>   	{}
>>   };
>>   +void brcmf_dmi_sanitize(char *dst, const unsigned char *allowed,
>> char safe)
>> +{
>> +	while (*dst) {
>> +		if ((*dst < 0) || !(allowed[*dst / 8] & (1 << (*dst % 8))))
>
> At a first look I have no clue what this code is doing and I honestly do not feel
> like figuring it out, this is clever, but IMHO not readable.
>
> Please just write this as if (*dst < 0x21 || (*dst > foo && < bar) || etc,
> so that a human can actually see in one look what the code is doing.

Is there an existing function for sanitising filenames so that we don't
need to reinvent the wheel, maybe something like isalnum()?

-- 
Kalle Valo

  reply	other threads:[~2019-05-06  8:42 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-04 16:26 PROBLEM: brcmfmac's DMI-based fw file names break built-in fw loader Victor Bravo
2019-05-04 19:11 ` Arend Van Spriel
2019-05-04 19:44   ` Victor Bravo
2019-05-05  8:20     ` Arend Van Spriel
2019-05-05 14:36       ` Victor Bravo
2019-05-05 14:48       ` [PATCH RFC] brcmfmac: sanitize DMI strings Victor Bravo
2019-05-05 14:52         ` Victor Bravo
2019-05-05 15:03       ` [PATCH RFC] brcmfmac: sanitize DMI strings v2 Victor Bravo
2019-05-06  8:13         ` Hans de Goede
2019-05-06  8:42           ` Kalle Valo [this message]
2019-05-06  9:14             ` Victor Bravo
2019-05-06 12:29               ` Kalle Valo
2019-05-06 14:06                 ` Victor Bravo
2019-05-06  9:06           ` Victor Bravo
2019-05-06  9:33             ` Hans de Goede
2019-05-06 10:20               ` Victor Bravo
2019-05-06 10:34                 ` Hans de Goede
2019-05-06 12:26                   ` Kalle Valo
2019-05-06 15:24                     ` Victor Bravo
2019-05-06 16:05                       ` Hans de Goede
2019-05-06 19:30                         ` Arend Van Spriel
2019-05-07 15:38                           ` Hans de Goede
2019-05-13  9:21                             ` Arend Van Spriel
2019-05-06  8:44         ` Kalle Valo

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