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libbpf: fix another GCC8 warning for strncpy

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Similar issue was fixed in cdfc7f888c ("libbpf: fix GCC8 warning for
strncpy") already. This one was missed. Fixing now.

Cc: Magnus Karlsson <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Acked-by: Magnus Karlsson <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
This commit is contained in:
Andrii Nakryiko 2019-07-15 20:57:03 -07:00 • committed by Alexei Starovoitov
commit 763ff0e7d9
1 changed files with 2 additions and 1 deletions
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3
tools/lib/bpf/xsk.c
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@ -517,7 +517,8 @@ int xsk_socket__create(struct xsk_socket **xsk_ptr, const char *ifname,
err = -errno;
goto out_socket;
}
strncpy(xsk->ifname, ifname, IFNAMSIZ);
strncpy(xsk->ifname, ifname, IFNAMSIZ - 1);
xsk->ifname[IFNAMSIZ - 1] = '\0';
err = xsk_set_xdp_socket_config(&xsk->config, usr_config);
if (err)