brintos

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1#define _GNU_SOURCE2 3#include <stdio.h>4#include <unistd.h>5#include <bpf/libbpf.h>6 7int main(int argc, char **argv)8{9	struct bpf_link *link = NULL;10	struct bpf_program *prog;11	struct bpf_object *obj;12	char filename[256];13	char command[256];14	int ret = 0;15	FILE *f;16 17	if (!argv[1]) {18		fprintf(stderr, "ERROR: Run with the btrfs device argument!\n");19		return 0;20	}21 22	snprintf(filename, sizeof(filename), "%s.bpf.o", argv[0]);23	obj = bpf_object__open_file(filename, NULL);24	if (libbpf_get_error(obj)) {25		fprintf(stderr, "ERROR: opening BPF object file failed\n");26		return 0;27	}28 29	prog = bpf_object__find_program_by_name(obj, "bpf_prog1");30	if (!prog) {31		fprintf(stderr, "ERROR: finding a prog in obj file failed\n");32		goto cleanup;33	}34 35	/* load BPF program */36	if (bpf_object__load(obj)) {37		fprintf(stderr, "ERROR: loading BPF object file failed\n");38		goto cleanup;39	}40 41	link = bpf_program__attach(prog);42	if (libbpf_get_error(link)) {43		fprintf(stderr, "ERROR: bpf_program__attach failed\n");44		link = NULL;45		goto cleanup;46	}47 48	snprintf(command, 256, "mount %s tmpmnt/", argv[1]);49	f = popen(command, "r");50	ret = pclose(f);51 52cleanup:53	bpf_link__destroy(link);54	bpf_object__close(obj);55	return ret ? 0 : 1;56}57