Commit 3e0ddc4f authored Apr 09, 2019 by Daniel Borkmann Committed by Alexei Starovoitov Apr 09, 2019

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>

parent 87df15de

kernel/bpf/syscall.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -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++;
		}

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