[PATCH v2] Staging: exfat: Avoid use of strcpy

[Sandro Volery]

Use strscpy instead of strcpy in exfat_core.c, and add a check
for length that will return already known FFS_INVALIDPATH.

Suggested-by: Rasmus Villemoes <li...@rasmusvillemoes.dk>
Signed-off-by: Sandro Volery <san...@volery.com>
---
v2: Implement length check and return in one
v1: Original Patch
 drivers/staging/exfat/exfat_core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/exfat/exfat_core.c 
b/drivers/staging/exfat/exfat_core.c
index da8c58149c35..4c40f1352848 100644
--- a/drivers/staging/exfat/exfat_core.c
+++ b/drivers/staging/exfat/exfat_core.c
@@ -2964,7 +2964,8 @@ s32 resolve_path(struct inode *inode, char *path, struct 
chain_t *p_dir,
        if (strlen(path) >= (MAX_NAME_LENGTH * MAX_CHARSET_SIZE))
                return FFS_INVALIDPATH;
 
-       strcpy(name_buf, path);
+       if (strscpy(name_buf, path, sizeof(name_buf)) < 0)
+               return FFS_INVALIDPATH;
 
        nls_cstring_to_uniname(sb, p_uniname, name_buf, &lossy);
        if (lossy)
-- 
2.23.0