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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
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>
80 lines
2 KiB
C
80 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright Amazon.com Inc. or its affiliates. */
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#include <vmlinux.h>
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#include "bpf_tracing_net.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_endian.h>
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char _license[] SEC("license") = "GPL";
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static long sock_i_ino(const struct sock *sk)
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{
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const struct socket *sk_socket = sk->sk_socket;
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const struct inode *inode;
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unsigned long ino;
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if (!sk_socket)
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return 0;
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inode = &container_of(sk_socket, struct socket_alloc, socket)->vfs_inode;
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bpf_probe_read_kernel(&ino, sizeof(ino), &inode->i_ino);
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return ino;
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}
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SEC("iter/unix")
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int dump_unix(struct bpf_iter__unix *ctx)
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{
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struct unix_sock *unix_sk = ctx->unix_sk;
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struct sock *sk = (struct sock *)unix_sk;
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struct seq_file *seq;
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__u32 seq_num;
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if (!unix_sk)
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return 0;
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seq = ctx->meta->seq;
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seq_num = ctx->meta->seq_num;
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if (seq_num == 0)
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BPF_SEQ_PRINTF(seq, "Num RefCount Protocol Flags Type St Inode Path\n");
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BPF_SEQ_PRINTF(seq, "%pK: %08X %08X %08X %04X %02X %8lu",
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unix_sk,
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sk->sk_refcnt.refs.counter,
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0,
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sk->sk_state == TCP_LISTEN ? __SO_ACCEPTCON : 0,
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sk->sk_type,
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sk->sk_socket ?
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(sk->sk_state == TCP_ESTABLISHED ? SS_CONNECTED : SS_UNCONNECTED) :
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(sk->sk_state == TCP_ESTABLISHED ? SS_CONNECTING : SS_DISCONNECTING),
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sock_i_ino(sk));
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if (unix_sk->addr) {
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if (unix_sk->addr->name->sun_path[0]) {
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BPF_SEQ_PRINTF(seq, " %s", unix_sk->addr->name->sun_path);
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} else {
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/* The name of the abstract UNIX domain socket starts
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* with '\0' and can contain '\0'. The null bytes
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* should be escaped as done in unix_seq_show().
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*/
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__u64 i, len;
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len = unix_sk->addr->len - sizeof(short);
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BPF_SEQ_PRINTF(seq, " @");
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for (i = 1; i < len; i++) {
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/* unix_validate_addr() tests this upper bound. */
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if (i >= sizeof(struct sockaddr_un))
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break;
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BPF_SEQ_PRINTF(seq, "%c",
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unix_sk->addr->name->sun_path[i] ?:
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'@');
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}
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}
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}
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BPF_SEQ_PRINTF(seq, "\n");
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return 0;
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}
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