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-rw-r--r--tools/include/uapi/linux/bpf.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 59a217ca2dfd..4eff7fc7ae58 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -1233,7 +1233,7 @@ enum {
/* Query effective (directly attached + inherited from ancestor cgroups)
* programs that will be executed for events within a cgroup.
- * attach_flags with this flag are returned only for directly attached programs.
+ * attach_flags with this flag are always returned 0.
*/
#define BPF_F_QUERY_EFFECTIVE (1U << 0)
@@ -1432,7 +1432,10 @@ union bpf_attr {
__u32 attach_flags;
__aligned_u64 prog_ids;
__u32 prog_cnt;
- __aligned_u64 prog_attach_flags; /* output: per-program attach_flags */
+ /* output: per-program attach_flags.
+ * not allowed to be set during effective query.
+ */
+ __aligned_u64 prog_attach_flags;
} query;
struct { /* anonymous struct used by BPF_RAW_TRACEPOINT_OPEN command */