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Groups > linux.kernel > #1742452
| From | Darren Hart <dvhart@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v3 6/8] platform/x86: dell-wmi-smbios: Add a sysfs interface for SMBIOS tokens |
| Date | 2017-09-30 04:20 +0200 |
| Message-ID | <uvfxL-6jP-3@gated-at.bofh.it> (permalink) |
| References | <uuyj7-40H-7@gated-at.bofh.it> <uuyj7-40H-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Sep 27, 2017 at 11:02:18PM -0500, Mario Limonciello wrote:
> Currently userspace tools can access system tokens via the dcdbas
> kernel module and a SMI call that will cause the platform to execute
> SMM code.
>
> With a goal in mind of deprecating the dcdbas kernel module a different
> method for accessing these tokens from userspace needs to be created.
>
> This is intentionally marked to only be readable as root as it can
> contain sensitive information about the platform's configuration.
>
> Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
> ---
...
> +static ssize_t tokens_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + size_t off = 0;
> + int i;
> +
> + for (i = 0; i < da_num_tokens; i++) {
> + if (off > PAGE_SIZE)
> + break;
> + off += scnprintf(buf+off, PAGE_SIZE-off, "%04x\t%04x\t%04x\n",
Minor Coding Style nit - spaces around binary operators: 3.1) Spaces
--
Darren Hart
VMware Open Source Technology Center
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[PATCH v3 6/8] platform/x86: dell-wmi-smbios: Add a sysfs interface for SMBIOS tokens Mario Limonciello <mario.limonciello@dell.com> - 2017-09-28 06:10 +0200
Re: [PATCH v3 6/8] platform/x86: dell-wmi-smbios: Add a sysfs interface for SMBIOS tokens Darren Hart <dvhart@infradead.org> - 2017-09-30 04:20 +0200
Re: [PATCH v3 6/8] platform/x86: dell-wmi-smbios: Add a sysfs interface for SMBIOS tokens Andy Shevchenko <andy.shevchenko@gmail.com> - 2017-10-01 11:00 +0200
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