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Message-ID: <94F2FBAB4432B54E8AACC7DFDE6C92E37E59B15D@ORSMSX110.amr.corp.intel.com>
Date: Wed, 24 May 2017 14:15:52 +0000
From: "Moore, Robert" <robert.moore@...el.com>
To: Karim Eshapa <karim.eshapa@...il.com>
CC: "Zheng, Lv" <lv.zheng@...el.com>,
"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
"lenb@...nel.org" <lenb@...nel.org>,
"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
"devel@...ica.org" <devel@...ica.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] acpi: acpica: dbfileio: Use strlcpy to Copy a C-string
into a sized buffer
I'm not sure that strlcpy is portable.
Bob
> -----Original Message-----
> From: Karim Eshapa [mailto:karim.eshapa@...il.com]
> Sent: Tuesday, May 23, 2017 4:26 PM
> To: Moore, Robert <robert.moore@...el.com>
> Cc: Zheng, Lv <lv.zheng@...el.com>; Wysocki, Rafael J
> <rafael.j.wysocki@...el.com>; lenb@...nel.org; linux-
> acpi@...r.kernel.org; devel@...ica.org; linux-kernel@...r.kernel.org;
> Karim Eshapa <karim.eshapa@...il.com>
> Subject: [PATCH] acpi: acpica: dbfileio: Use strlcpy to Copy a C-string
> into a sized buffer
>
> Use strlcpy with sized buffer instead of strncpy to avoid non NUL-
> terminated source strings problems.
>
> Signed-off-by: Karim Eshapa <karim.eshapa@...il.com>
> ---
> drivers/acpi/acpica/dbfileio.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/acpica/dbfileio.c
> b/drivers/acpi/acpica/dbfileio.c index 4d81ea2..f0f22f1 100644
> --- a/drivers/acpi/acpica/dbfileio.c
> +++ b/drivers/acpi/acpica/dbfileio.c
> @@ -99,7 +99,7 @@ void acpi_db_open_debug_file(char *name)
> }
>
> acpi_os_printf("Debug output file %s opened\n", name);
> - strncpy(acpi_gbl_db_debug_filename, name,
> + strlcpy(acpi_gbl_db_debug_filename, name,
> sizeof(acpi_gbl_db_debug_filename));
> acpi_gbl_db_output_to_file = TRUE;
> }
> --
> 2.7.4
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