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authorDaniel Borkmann <daniel@iogearbox.net>2019-04-09 23:20:07 +0200
committerAlexei Starovoitov <ast@kernel.org>2019-04-09 17:05:46 -0700
commit3e0ddc4f3ff1436970e96e76f3df3c3b5f5173b6 (patch)
treeb63d2fbe0bbbe27f537a8119ad83f09a715227e6 /kernel/bpf
parent87df15de441bd4add7876ef584da8cabdd9a042a (diff)
downloadlinux-3e0ddc4f3ff1436970e96e76f3df3c3b5f5173b6.tar.bz2
bpf: allow . char as part of the object name
Trivial addition to allow '.' aside from '_' as "special" characters in the object name. Used to allow for substrings in maps from loader side such as ".bss", ".data", ".rodata", but could also be useful for other purposes. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Acked-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf')
-rw-r--r--kernel/bpf/syscall.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index b3ce516e5a20..198c9680bf0d 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -474,10 +474,10 @@ static int bpf_obj_name_cpy(char *dst, const char *src)
const char *end = src + BPF_OBJ_NAME_LEN;
memset(dst, 0, BPF_OBJ_NAME_LEN);
-
- /* Copy all isalnum() and '_' char */
+ /* Copy all isalnum(), '_' and '.' chars. */
while (src < end && *src) {
- if (!isalnum(*src) && *src != '_')
+ if (!isalnum(*src) &&
+ *src != '_' && *src != '.')
return -EINVAL;
*dst++ = *src++;
}