/* Copyright (c) 2016 Facebook * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include "libbpf.h" static void usage(void) { printf("Usage: test_cgrp2_array_pin [...]\n"); printf(" -F File to pin an BPF cgroup array\n"); printf(" -U Update an already pinned BPF cgroup array\n"); printf(" -v Full path of the cgroup2\n"); printf(" -h Display this help\n"); } int main(int argc, char **argv) { const char *pinned_file = NULL, *cg2 = NULL; int create_array = 1; int array_key = 0; int array_fd = -1; int cg2_fd = -1; int ret = -1; int opt; while ((opt = getopt(argc, argv, "F:U:v:")) != -1) { switch (opt) { /* General args */ case 'F': pinned_file = optarg; break; case 'U': pinned_file = optarg; create_array = 0; break; case 'v': cg2 = optarg; break; default: usage(); goto out; } } if (!cg2 || !pinned_file) { usage(); goto out; } cg2_fd = open(cg2, O_RDONLY); if (cg2_fd < 0) { fprintf(stderr, "open(%s,...): %s(%d)\n", cg2, strerror(errno), errno); goto out; } if (create_array) { array_fd = bpf_create_map(BPF_MAP_TYPE_CGROUP_ARRAY, sizeof(uint32_t), sizeof(uint32_t), 1, 0); if (array_fd < 0) { fprintf(stderr, "bpf_create_map(BPF_MAP_TYPE_CGROUP_ARRAY,...): %s(%d)\n", strerror(errno), errno); goto out; } } else { array_fd = bpf_obj_get(pinned_file); if (array_fd < 0) { fprintf(stderr, "bpf_obj_get(%s): %s(%d)\n", pinned_file, strerror(errno), errno); goto out; } } ret = bpf_map_update_elem(array_fd, &array_key, &cg2_fd, 0); if (ret) { perror("bpf_map_update_elem"); goto out; } if (create_array) { ret = bpf_obj_pin(array_fd, pinned_file); if (ret) { fprintf(stderr, "bpf_obj_pin(..., %s): %s(%d)\n", pinned_file, strerror(errno), errno); goto out; } } out: if (array_fd != -1) close(array_fd); if (cg2_fd != -1) close(cg2_fd); return ret; } ext.git/log/net/lapb/lapb_in.c'>
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