One post tagged with "integration"

struct outer_hash {
  __uint(type, BPF_MAP_TYPE_HASH_OF_MAPS);
  __uint(max_entries, X);
  __uint(key_size, sizeof(struct outer_key));    // 2*u32
  __uint(value_size, sizeof(u32));               // Inner Map File Descriptor
  __uint(pinning, LIBBPF_PIN_BY_NAME);           // Created in Userspace, Identified in Kernel Space using pinned name
};

struct outer_key {
  u32 pid_ns;
  u32 mnt_ns;
};

&ebpf.MapSpec{
    Type:       ebpf.Hash,
    KeySize:    4,            // Hash Value of Entity
    ValueSize:  8,            // Decision Values
    MaxEntries: 1024,
    }

struct data_t {
  bool owner;        // owner only flag
  bool read;         // read only flag 
  bool dir;          // policy directory flag
  bool recursive;    // directory recursive flag
  bool hint;         // policy directory hint
};

#pragma unroll
  for (int i = 0; i < MAX_STRING_SIZE; i++) {
    if (path[i] == '\0')
      break;

    if (path[i] == '/') {
      __builtin_memset(&dir, 0, sizeof(dir));
      bpf_probe_read_str(&dir, i + 2, path);

      fp = jenkins_hash(dir, i + 1, 0);

      struct data_t *val = bpf_map_lookup_elem(inner, &fp);
      if (val) {
        if (val->dir) {
          matched = true;
          goto decisionmaker;
        }
        if (val->hint == 0) { // If we match a non directory entity somehow
          break;
        }
      } else {
        break;
      }
    }
  }