[v4,17/31] kconfig: add 'filename' and 'lineno' built-in variables

Message ID 1526537830-22606-18-git-send-email-yamada.masahiro@socionext.com
State New
Headers show
Series
  • kconfig: move compiler capability tests to Kconfig
Related show

Commit Message

Masahiro Yamada May 17, 2018, 6:16 a.m.
The special variables, $(filename) and $(lineno), are expanded to a
file name and its line number being parsed, respectively.

Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

---

Changes in v4:
 - Newly added

Changes in v3: None
Changes in v2: None

 scripts/kconfig/preprocess.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

-- 
2.7.4

Comments

Kees Cook May 17, 2018, 6:39 a.m. | #1
On Wed, May 16, 2018 at 11:16 PM, Masahiro Yamada
<yamada.masahiro@socionext.com> wrote:
> The special variables, $(filename) and $(lineno), are expanded to a

> file name and its line number being parsed, respectively.

>

> Suggested-by: Randy Dunlap <rdunlap@infradead.org>

> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>


Reviewed-by: Kees Cook <keescook@chromium.org>


-Kees

> ---

>

> Changes in v4:

>  - Newly added

>

> Changes in v3: None

> Changes in v2: None

>

>  scripts/kconfig/preprocess.c | 16 ++++++++++++++++

>  1 file changed, 16 insertions(+)

>

> diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c

> index 88844a7..c39e30e 100644

> --- a/scripts/kconfig/preprocess.c

> +++ b/scripts/kconfig/preprocess.c

> @@ -111,6 +111,11 @@ static char *do_error(int argc, char *argv[], int old_argc, char *old_argv[])

>         return NULL;

>  }

>

> +static char *do_filename(int argc, char *argv[], int old_argc, char *old_argv[])

> +{

> +       return xstrdup(current_file->name);

> +}

> +

>  static char *do_if(int argc, char *argv[], int old_argc, char *old_argv[])

>  {

>         char *cond, *p, *res;

> @@ -144,6 +149,15 @@ static char *do_info(int argc, char *argv[], int old_argc, char *old_argv[])

>         return xstrdup("");

>  }

>

> +static char *do_lineno(int argc, char *argv[], int old_argc, char *old_argv[])

> +{

> +       char buf[16];

> +

> +       sprintf(buf, "%d", yylineno);

> +

> +       return xstrdup(buf);

> +}

> +

>  static char *do_shell(int argc, char *argv[], int old_argc, char *old_argv[])

>  {

>         FILE *p;

> @@ -194,8 +208,10 @@ static char *do_warning(int argc, char *argv[], int old_argc, char *old_argv[])

>  static const struct function function_table[] = {

>         /* Name         MIN     MAX     EXP?    Function */

>         { "error",      1,      1,      true,   do_error },

> +       { "filename",   0,      0,      false,  do_filename },

>         { "if",         2,      3,      false,  do_if },

>         { "info",       1,      1,      true,   do_info },

> +       { "lineno",     0,      0,      false,  do_lineno },

>         { "shell",      1,      1,      true,   do_shell },

>         { "warning",    1,      1,      true,   do_warning },

>  };

> --

> 2.7.4

>




-- 
Kees Cook
Pixel Security

Patch

diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 88844a7..c39e30e 100644
--- a/scripts/kconfig/preprocess.c
+++ b/scripts/kconfig/preprocess.c
@@ -111,6 +111,11 @@  static char *do_error(int argc, char *argv[], int old_argc, char *old_argv[])
 	return NULL;
 }
 
+static char *do_filename(int argc, char *argv[], int old_argc, char *old_argv[])
+{
+	return xstrdup(current_file->name);
+}
+
 static char *do_if(int argc, char *argv[], int old_argc, char *old_argv[])
 {
 	char *cond, *p, *res;
@@ -144,6 +149,15 @@  static char *do_info(int argc, char *argv[], int old_argc, char *old_argv[])
 	return xstrdup("");
 }
 
+static char *do_lineno(int argc, char *argv[], int old_argc, char *old_argv[])
+{
+	char buf[16];
+
+	sprintf(buf, "%d", yylineno);
+
+	return xstrdup(buf);
+}
+
 static char *do_shell(int argc, char *argv[], int old_argc, char *old_argv[])
 {
 	FILE *p;
@@ -194,8 +208,10 @@  static char *do_warning(int argc, char *argv[], int old_argc, char *old_argv[])
 static const struct function function_table[] = {
 	/* Name		MIN	MAX	EXP?	Function */
 	{ "error",	1,	1,	true,	do_error },
+	{ "filename",	0,	0,	false,	do_filename },
 	{ "if",		2,	3,	false,	do_if },
 	{ "info",	1,	1,	true,	do_info },
+	{ "lineno",	0,	0,	false,	do_lineno },
 	{ "shell",	1,	1,	true,	do_shell },
 	{ "warning",	1,	1,	true,	do_warning },
 };