From 841f1b8fb4ca5e296e0ecb2b13f2a679d912ec4d Mon Sep 17 00:00:00 2001
From: Mattias Jacobsson <2pi@mok.nu>
Date: Thu, 7 Feb 2019 13:30:22 +0100
Subject: [PATCH] modpost: file2alias: define size of alias
The size of the variable alias provided to do_entry functions are
currently not readily available. Thus hindering do_entry functions to
perform bounds checking.
Define the macro ALIAS_SIZE containing the size of the variable alias.
Signed-off-by: Mattias Jacobsson <2pi@mok.nu>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
---
scripts/mod/file2alias.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index a37af7d719732..afe22af20d7d9 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -50,6 +50,9 @@ struct devtable {
int (*do_entry)(const char *filename, void *symval, char *alias);
};
+/* Size of alias provided to do_entry functions */
+#define ALIAS_SIZE 500
+
/* Define a variable f that holds the value of field f of struct devid
* based at address m.
*/
@@ -1303,7 +1306,7 @@ static void do_table(void *symval, unsigned long size,
struct module *mod)
{
unsigned int i;
- char alias[500];
+ char alias[ALIAS_SIZE];
device_id_check(mod->name, device_id, size, id_size, symval);
/* Leave last one: it's the terminator. */
--
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