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210e843aab
BPF_MAP_TYPE_PERCPU_ARRAY was introduced in kernel version 4.6, so with latest changes to intercept processes we lost support for older kernels < 4.6. Now we work again for example on kernels 4.4.
40 lines
901 B
C
40 lines
901 B
C
#ifndef OPENSNITCH_COMMON_DEFS_H
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#define OPENSNITCH_COMMON_DEFS_H
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#include <linux/sched.h>
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#include <linux/ptrace.h>
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#include <uapi/linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#include <bpf/bpf_core_read.h>
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#define BUF_SIZE_MAP_NS 256
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#define MAPSIZE 12000
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// even though we only need 32 bits of pid, on x86_32 ebpf verifier complained when pid type was set to u32
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typedef u64 pid_size_t;
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typedef u64 uid_size_t;
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//-------------------------------map definitions
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// which github.com/iovisor/gobpf/elf expects
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typedef struct bpf_map_def {
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unsigned int type;
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unsigned int key_size;
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unsigned int value_size;
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unsigned int max_entries;
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unsigned int map_flags;
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unsigned int pinning;
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char namespace[BUF_SIZE_MAP_NS];
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} bpf_map_def;
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enum bpf_pin_type {
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PIN_NONE = 0,
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PIN_OBJECT_NS,
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PIN_GLOBAL_NS,
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PIN_CUSTOM_NS,
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};
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//-----------------------------------
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#endif
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