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modpost: file2alias: define size of alias

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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>
This commit is contained in:
Mattias Jacobsson 2019-02-07 13:30:22 +01:00 committed by Darren Hart (VMware)
parent b98dc493e7
commit 841f1b8fb4
1 changed files with 4 additions and 1 deletions
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5
scripts/mod/file2alias.c
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@ -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. */