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e626a13f6f
Drop bpf_iter.h header which uses vmlinux.h but re-defines a bunch of iterator structures and some of BPF constants for use in BPF iterator selftests. None of that is necessary when fresh vmlinux.h header is generated for vmlinux image that matches latest selftests. So drop ugly hacks and have a nice plain vmlinux.h usage everywhere. We could do the same with all the kfunc __ksym redefinitions, but that has dependency on very fresh pahole, so I'm not addressing that here. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20241029203919.1948941-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
50 lines
961 B
C
50 lines
961 B
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2020, Oracle and/or its affiliates. */
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#include <vmlinux.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_core_read.h>
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#include <errno.h>
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char _license[] SEC("license") = "GPL";
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long tasks = 0;
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long seq_err = 0;
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bool skip = false;
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SEC("iter/task")
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int dump_task_struct(struct bpf_iter__task *ctx)
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{
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struct seq_file *seq = ctx->meta->seq;
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struct task_struct *task = ctx->task;
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static struct btf_ptr ptr = { };
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long ret;
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#if __has_builtin(__builtin_btf_type_id)
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ptr.type_id = bpf_core_type_id_kernel(struct task_struct);
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ptr.ptr = task;
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if (ctx->meta->seq_num == 0)
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BPF_SEQ_PRINTF(seq, "Raw BTF task\n");
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ret = bpf_seq_printf_btf(seq, &ptr, sizeof(ptr), 0);
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switch (ret) {
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case 0:
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tasks++;
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break;
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case -ERANGE:
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/* NULL task or task->fs, don't count it as an error. */
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break;
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case -E2BIG:
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return 1;
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default:
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seq_err = ret;
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break;
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}
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#else
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skip = true;
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#endif
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return 0;
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}
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