Messages in this thread Patch in this message | | | From | Milan Landaverde <> | Subject | [PATCH bpf-next] bpf/bpftool: add unprivileged_bpf_disabled check against value of 2 | Date | Tue, 22 Mar 2022 10:49:45 -0400 |
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In [1], we added a kconfig knob that can set /proc/sys/kernel/unprivileged_bpf_disabled to 2
We now check against this value in bpftool feature probe
[1] https://lore.kernel.org/bpf/74ec548079189e4e4dffaeb42b8987bb3c852eee.1620765074.git.daniel@iogearbox.net
Signed-off-by: Milan Landaverde <milan@mdaverde.com> --- tools/bpf/bpftool/feature.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c index c2f43a5d38e0..290998c82de1 100644 --- a/tools/bpf/bpftool/feature.c +++ b/tools/bpf/bpftool/feature.c @@ -207,7 +207,10 @@ static void probe_unprivileged_disabled(void) printf("bpf() syscall for unprivileged users is enabled\n"); break; case 1: - printf("bpf() syscall restricted to privileged users\n"); + printf("bpf() syscall restricted to privileged users (without recovery)\n"); + break; + case 2: + printf("bpf() syscall restricted to privileged users (admin can change)\n"); break; case -1: printf("Unable to retrieve required privileges for bpf() syscall\n"); -- 2.32.0
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