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| author | Milan Landaverde <milan@mdaverde.com> | 2022-03-22 10:49:45 -0400 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-03-28 19:01:54 -0700 |
| commit | 8c1b21198551d795a44f08ad185f716732b47bbe (patch) | |
| tree | 011355cb0088c63cd08ce86de5812e910f490e22 /tools | |
| parent | d717e4cae0fe77e10a27e8545a967b8c379873ac (diff) | |
| download | linux-8c1b21198551d795a44f08ad185f716732b47bbe.tar.gz linux-8c1b21198551d795a44f08ad185f716732b47bbe.tar.bz2 linux-8c1b21198551d795a44f08ad185f716732b47bbe.zip | |
bpf/bpftool: Add unprivileged_bpf_disabled check against value of 2
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>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/bpf/20220322145012.1315376-1-milan@mdaverde.com
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/bpf/bpftool/feature.c | 5 |
1 files changed, 4 insertions, 1 deletions
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"); |