3e689141e6
Fix all selftests to include libbpf header files with the bpf/ prefix, to
be consistent with external users of the library. Also ensure that all
includes of exported libbpf header files (those that are exported on 'make
install' of the library) use bracketed includes instead of quoted.
To not break the build, keep the old include path until everything has been
changed to the new one; a subsequent patch will remove that.
Fixes: 6910d7d3867a ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560568.1683545.9649335788846513446.stgit@toke.dk
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
/* Copyright (c) 2017 Facebook
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#include <linux/bpf.h>
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#include <linux/version.h>
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#include <bpf/bpf_helpers.h>
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SEC("cgroup/dev")
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int bpf_prog1(struct bpf_cgroup_dev_ctx *ctx)
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{
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short type = ctx->access_type & 0xFFFF;
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#ifdef DEBUG
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short access = ctx->access_type >> 16;
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char fmt[] = " %d:%d \n";
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switch (type) {
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case BPF_DEVCG_DEV_BLOCK:
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fmt[0] = 'b';
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break;
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case BPF_DEVCG_DEV_CHAR:
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fmt[0] = 'c';
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break;
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default:
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fmt[0] = '?';
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break;
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}
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if (access & BPF_DEVCG_ACC_READ)
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fmt[8] = 'r';
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if (access & BPF_DEVCG_ACC_WRITE)
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fmt[9] = 'w';
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if (access & BPF_DEVCG_ACC_MKNOD)
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fmt[10] = 'm';
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bpf_trace_printk(fmt, sizeof(fmt), ctx->major, ctx->minor);
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#endif
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/* Allow access to /dev/zero and /dev/random.
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* Forbid everything else.
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*/
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if (ctx->major != 1 || type != BPF_DEVCG_DEV_CHAR)
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return 0;
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switch (ctx->minor) {
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case 5: /* 1:5 /dev/zero */
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case 9: /* 1:9 /dev/urandom */
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return 1;
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}
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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__u32 _version SEC("version") = LINUX_VERSION_CODE;
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