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fs: fat: avoid out of bounds access warning
author
Heinrich Schuchardt
<xypron.glpk@gmx.de>
Mon, 25 Jan 2021 23:04:19 +0000
(
00:04
+0100)
committer
Tom Rini
<trini@konsulko.com>
Fri, 29 Jan 2021 15:36:48 +0000
(10:36 -0500)
When copying short name plus extension refer to the encapsulating structure
and not to the short name element.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
fs/fat/fat_write.c
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diff --git
a/fs/fat/fat_write.c
b/fs/fat/fat_write.c
index
0132ef9
..
aae3a6a
100644
(file)
--- a/
fs/fat/fat_write.c
+++ b/
fs/fat/fat_write.c
@@
-108,10
+108,7
@@
static int set_name(fat_itr *itr, const char *filename, char *shortname)
char buf[13];
int i;
int ret;
- struct {
- char name[8];
- char ext[3];
- } dirent;
+ struct nameext dirent;
if (!filename)
return -EIO;
@@
-185,7
+182,7
@@
static int set_name(fat_itr *itr, const char *filename, char *shortname)
}
return -EIO;
out:
- memcpy(shortname,
dirent.name
, SHORT_NAME_SIZE);
+ memcpy(shortname,
&dirent
, SHORT_NAME_SIZE);
return ret;
}