add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/testing/selftests/bpf/test_sock.c
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@@ -13,7 +13,7 @@
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 #include <bpf/bpf.h>
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 #include "cgroup_helpers.h"
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-#include "bpf_endian.h"
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+#include <bpf/bpf_endian.h>
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 #include "bpf_rlimit.h"
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 #include "bpf_util.h"
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@@ -21,6 +21,7 @@
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 #define MAX_INSNS	512
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 char bpf_log_buf[BPF_LOG_BUF_SIZE];
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+static bool verbose = false;
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 struct sock_test {
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 	const char *descr;
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@@ -328,6 +329,7 @@
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 			  enum bpf_attach_type attach_type)
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 {
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 	struct bpf_load_program_attr attr;
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+	int ret;
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 	memset(&attr, 0, sizeof(struct bpf_load_program_attr));
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 	attr.prog_type = BPF_PROG_TYPE_CGROUP_SOCK;
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@@ -335,8 +337,13 @@
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 	attr.insns = prog;
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 	attr.insns_cnt = probe_prog_length(attr.insns);
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 	attr.license = "GPL";
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+	attr.log_level = 2;
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-	return bpf_load_program_xattr(&attr, bpf_log_buf, BPF_LOG_BUF_SIZE);
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+	ret = bpf_load_program_xattr(&attr, bpf_log_buf, BPF_LOG_BUF_SIZE);
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+	if (verbose && ret < 0)
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+		fprintf(stderr, "%s\n", bpf_log_buf);
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+
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+	return ret;
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 }
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 static int attach_sock_prog(int cgfd, int progfd,
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@@ -457,14 +464,8 @@
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 	int cgfd = -1;
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 	int err = 0;
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-	if (setup_cgroup_environment())
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-		goto err;
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-
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-	cgfd = create_and_get_cgroup(CG_PATH);
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-	if (!cgfd)
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-		goto err;
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-
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-	if (join_cgroup(CG_PATH))
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+	cgfd = cgroup_setup_and_join(CG_PATH);
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+	if (cgfd < 0)
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 		goto err;
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 	if (run_tests(cgfd))