averello/linux-stable-mirror
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2026-06-21 15:43:21 +02:00
Code Issues Packages Projects Releases Wiki Activity

libbpf: Use strscpy() in kernel code for skel_map_create()

Browse Source 
Linux has deprecated[1] strncpy(), and the use in skel_map_create()
is best replaced with strscpy(). Since we still need to build this
file in userspace, leave the strncpy() in place in that case. This
is the last use of strncpy() in the kernel.

Link: https://github.com/KSPP/linux/issues/90 [1]
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://lore.kernel.org/r/20260513050806.do.620-kees@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Kees Cook
2026-05-12 22:08:07 -07:00
committed by Alexei Starovoitov
parent cd59fa185a
commit 74a9bb761a
1 changed files with 5 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tools/lib/bpf/skel_internal.h
+5
View File
@@ -243,7 +243,12 @@ static inline int skel_map_create(enum bpf_map_type map_type,
attr.excl_prog_hash = (unsigned long) excl_prog_hash;
attr.excl_prog_hash_size = excl_prog_hash_sz;
#ifdef __KERNEL__
if (strscpy(attr.map_name, map_name) < 0)
return -EINVAL;
#else
strncpy(attr.map_name, map_name, sizeof(attr.map_name));
#endif
attr.key_size = key_size;
attr.value_size = value_size;
attr.max_entries = max_entries;