efadf2ad17
The allocated ring buffer is never freed, do so in the cleanup path.
Fixes: f446b570ac ("bpf/selftests: Update the IMA test to use BPF ring buffer")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211028063501.2239335-9-memxor@gmail.com
91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020 Google LLC.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <test_progs.h>
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#include <linux/ring_buffer.h>
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#include "ima.skel.h"
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static int run_measured_process(const char *measured_dir, u32 *monitored_pid)
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{
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int child_pid, child_status;
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child_pid = fork();
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if (child_pid == 0) {
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*monitored_pid = getpid();
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execlp("./ima_setup.sh", "./ima_setup.sh", "run", measured_dir,
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NULL);
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exit(errno);
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} else if (child_pid > 0) {
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waitpid(child_pid, &child_status, 0);
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return WEXITSTATUS(child_status);
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}
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return -EINVAL;
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}
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static u64 ima_hash_from_bpf;
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static int process_sample(void *ctx, void *data, size_t len)
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{
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ima_hash_from_bpf = *((u64 *)data);
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return 0;
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}
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void test_test_ima(void)
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{
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char measured_dir_template[] = "/tmp/ima_measuredXXXXXX";
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struct ring_buffer *ringbuf = NULL;
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const char *measured_dir;
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char cmd[256];
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int err, duration = 0;
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struct ima *skel = NULL;
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skel = ima__open_and_load();
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if (CHECK(!skel, "skel_load", "skeleton failed\n"))
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goto close_prog;
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ringbuf = ring_buffer__new(bpf_map__fd(skel->maps.ringbuf),
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process_sample, NULL, NULL);
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if (!ASSERT_OK_PTR(ringbuf, "ringbuf"))
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goto close_prog;
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err = ima__attach(skel);
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if (CHECK(err, "attach", "attach failed: %d\n", err))
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goto close_prog;
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measured_dir = mkdtemp(measured_dir_template);
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if (CHECK(measured_dir == NULL, "mkdtemp", "err %d\n", errno))
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goto close_prog;
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snprintf(cmd, sizeof(cmd), "./ima_setup.sh setup %s", measured_dir);
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err = system(cmd);
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if (CHECK(err, "failed to run command", "%s, errno = %d\n", cmd, errno))
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goto close_clean;
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err = run_measured_process(measured_dir, &skel->bss->monitored_pid);
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if (CHECK(err, "run_measured_process", "err = %d\n", err))
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goto close_clean;
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err = ring_buffer__consume(ringbuf);
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ASSERT_EQ(err, 1, "num_samples_or_err");
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ASSERT_NEQ(ima_hash_from_bpf, 0, "ima_hash");
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close_clean:
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snprintf(cmd, sizeof(cmd), "./ima_setup.sh cleanup %s", measured_dir);
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err = system(cmd);
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CHECK(err, "failed to run command", "%s, errno = %d\n", cmd, errno);
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close_prog:
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ring_buffer__free(ringbuf);
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ima__destroy(skel);
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}
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