diff options
| author | Slava Imameev <slava.imameev@crowdstrike.com> | 2025-06-21 01:18:11 +1000 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-06-20 11:13:03 -0700 |
| commit | d32179e8c2583f1613f7bc9710612091c3c038d8 (patch) | |
| tree | d14c74e2fe0292ada1a1f872b7177779cf9ac2c5 /tools/bpf/bpftool/link.c | |
| parent | e30329b8a6476eed87460e73a29ecd718ec981e1 (diff) | |
bpftool: Use appropriate permissions for map access
Modify several functions in tools/bpf/bpftool/common.c to allow
specification of requested access for file descriptors, such as
read-only access.
Update bpftool to request only read access for maps when write
access is not required. This fixes errors when reading from maps
that are protected from modification via security_bpf_map.
Signed-off-by: Slava Imameev <slava.imameev@crowdstrike.com>
Reviewed-by: Quentin Monnet <qmo@kernel.org>
Link: https://lore.kernel.org/r/20250620151812.13952-1-slava.imameev@crowdstrike.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/bpf/bpftool/link.c')
| -rw-r--r-- | tools/bpf/bpftool/link.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c index 03513ffffb79..a773e05d5ade 100644 --- a/tools/bpf/bpftool/link.c +++ b/tools/bpf/bpftool/link.c @@ -117,7 +117,7 @@ static int link_parse_fd(int *argc, char ***argv) path = **argv; NEXT_ARGP(); - return open_obj_pinned_any(path, BPF_OBJ_LINK); + return open_obj_pinned_any(path, BPF_OBJ_LINK, NULL); } p_err("expected 'id' or 'pinned', got: '%s'?", **argv); |