| From: Thorsten Blum <thorsten.blum@linux.dev> |
| Subject: mm/memfd: replace deprecated strcpy() with memcpy() in alloc_name() |
| Date: Sat, 12 Jul 2025 19:45:17 +0200 |
| |
| strcpy() is deprecated; use memcpy() instead. |
| |
| Not copying the NUL terminator is safe because strncpy_from_user() would |
| overwrite it anyway by appending uname to the destination buffer at index |
| MFD_NAME_PREFIX_LEN. |
| |
| No functional changes intended. |
| |
| Link: https://github.com/KSPP/linux/issues/88 |
| Link: https://lkml.kernel.org/r/20250712174516.64243-2-thorsten.blum@linux.dev |
| Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> |
| Cc: Baolin Wang <baolin.wang@linux.alibaba.com> |
| Cc: Hugh Dickins <hughd@google.com> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| mm/memfd.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/mm/memfd.c~mm-memfd-replace-deprecated-strcpy-with-memcpy-in-alloc_name |
| +++ a/mm/memfd.c |
| @@ -411,7 +411,7 @@ static char *alloc_name(const char __use |
| if (!name) |
| return ERR_PTR(-ENOMEM); |
| |
| - strcpy(name, MFD_NAME_PREFIX); |
| + memcpy(name, MFD_NAME_PREFIX, MFD_NAME_PREFIX_LEN); |
| /* returned length does not include terminating zero */ |
| len = strncpy_from_user(&name[MFD_NAME_PREFIX_LEN], uname, MFD_NAME_MAX_LEN + 1); |
| if (len < 0) { |
| _ |
