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Message-ID: <f780bdfc-8a0d-ca80-8cb1-71c6ec32f77b@redhat.com>
Date: Mon, 18 Sep 2023 16:09:40 +0200
From: Hans de Goede <hdegoede@...hat.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Mark Pearson <mpearson-lenovo@...ebb.ca>,
platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Mark Pearson <markpearson@...ovo.com>,
Mark Gross <markgross@...nel.org>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: Re: [PATCH v2 1/2] platform/x86: think-lmi: Replace kstrdup() +
strreplace() with kstrdup_and_replace()
Hi Andy,
On 9/18/23 15:51, Andy Shevchenko wrote:
> Replace open coded functionalify of kstrdup_and_replace() with a call.
>
> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
> v2: rebased on top of review-hans (Hans), added tag (Ilpo)
> drivers/platform/x86/think-lmi.c | 43 +++++++++++---------------------
> 1 file changed, 15 insertions(+), 28 deletions(-)
Thank you for the new version.
Thank you for your patch-series, I've applied the series to my
review-hans branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans
Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.
Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.
Regards,
Hans
>
> diff --git a/drivers/platform/x86/think-lmi.c b/drivers/platform/x86/think-lmi.c
> index f69003c30fa2..4e0d52dc3944 100644
> --- a/drivers/platform/x86/think-lmi.c
> +++ b/drivers/platform/x86/think-lmi.c
> @@ -15,7 +15,7 @@
> #include <linux/errno.h>
> #include <linux/fs.h>
> #include <linux/mutex.h>
> -#include <linux/string.h>
> +#include <linux/string_helpers.h>
> #include <linux/types.h>
> #include <linux/dmi.h>
> #include <linux/wmi.h>
> @@ -432,13 +432,11 @@ static ssize_t new_password_store(struct kobject *kobj,
> if (!tlmi_priv.can_set_bios_password)
> return -EOPNOTSUPP;
>
> - new_pwd = kstrdup(buf, GFP_KERNEL);
> + /* Strip out CR if one is present, setting password won't work if it is present */
> + new_pwd = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
> if (!new_pwd)
> return -ENOMEM;
>
> - /* Strip out CR if one is present, setting password won't work if it is present */
> - strip_cr(new_pwd);
> -
> /* Use lock in case multiple WMI operations needed */
> mutex_lock(&tlmi_mutex);
>
> @@ -709,13 +707,11 @@ static ssize_t cert_to_password_store(struct kobject *kobj,
> if (!setting->signature || !setting->signature[0])
> return -EACCES;
>
> - passwd = kstrdup(buf, GFP_KERNEL);
> + /* Strip out CR if one is present */
> + passwd = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
> if (!passwd)
> return -ENOMEM;
>
> - /* Strip out CR if one is present */
> - strip_cr(passwd);
> -
> /* Format: 'Password,Signature' */
> auth_str = kasprintf(GFP_KERNEL, "%s,%s", passwd, setting->signature);
> if (!auth_str) {
> @@ -765,11 +761,10 @@ static ssize_t certificate_store(struct kobject *kobj,
> return ret ?: count;
> }
>
> - new_cert = kstrdup(buf, GFP_KERNEL);
> + /* Strip out CR if one is present */
> + new_cert = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
> if (!new_cert)
> return -ENOMEM;
> - /* Strip out CR if one is present */
> - strip_cr(new_cert);
>
> if (setting->cert_installed) {
> /* Certificate is installed so this is an update */
> @@ -817,13 +812,11 @@ static ssize_t signature_store(struct kobject *kobj,
> if (!tlmi_priv.certificate_support)
> return -EOPNOTSUPP;
>
> - new_signature = kstrdup(buf, GFP_KERNEL);
> + /* Strip out CR if one is present */
> + new_signature = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
> if (!new_signature)
> return -ENOMEM;
>
> - /* Strip out CR if one is present */
> - strip_cr(new_signature);
> -
> /* Free any previous signature */
> kfree(setting->signature);
> setting->signature = new_signature;
> @@ -846,13 +839,11 @@ static ssize_t save_signature_store(struct kobject *kobj,
> if (!tlmi_priv.certificate_support)
> return -EOPNOTSUPP;
>
> - new_signature = kstrdup(buf, GFP_KERNEL);
> + /* Strip out CR if one is present */
> + new_signature = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
> if (!new_signature)
> return -ENOMEM;
>
> - /* Strip out CR if one is present */
> - strip_cr(new_signature);
> -
> /* Free any previous signature */
> kfree(setting->save_signature);
> setting->save_signature = new_signature;
> @@ -992,13 +983,11 @@ static ssize_t current_value_store(struct kobject *kobj,
> if (tlmi_priv.save_mode == TLMI_SAVE_BULK && tlmi_priv.reboot_required)
> return -EPERM;
>
> - new_setting = kstrdup(buf, GFP_KERNEL);
> + /* Strip out CR if one is present */
> + new_setting = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
> if (!new_setting)
> return -ENOMEM;
>
> - /* Strip out CR if one is present */
> - strip_cr(new_setting);
> -
> /* Use lock in case multiple WMI operations needed */
> mutex_lock(&tlmi_mutex);
>
> @@ -1279,13 +1268,11 @@ static ssize_t debug_cmd_store(struct kobject *kobj, struct kobj_attribute *attr
> if (!tlmi_priv.can_debug_cmd)
> return -EOPNOTSUPP;
>
> - new_setting = kstrdup(buf, GFP_KERNEL);
> + /* Strip out CR if one is present */
> + new_setting = kstrdup_and_replace(buf, '\n', '\0', GFP_KERNEL);
> if (!new_setting)
> return -ENOMEM;
>
> - /* Strip out CR if one is present */
> - strip_cr(new_setting);
> -
> if (tlmi_priv.pwd_admin->valid && tlmi_priv.pwd_admin->password[0]) {
> auth_str = kasprintf(GFP_KERNEL, "%s,%s,%s;",
> tlmi_priv.pwd_admin->password,
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