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tests: add a fuzzer for server_process_native_file
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47
src/fuzz/fuzz-journald-native-fd.c
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47
src/fuzz/fuzz-journald-native-fd.c
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@ -0,0 +1,47 @@
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/* SPDX-License-Identifier: LGPL-2.1+ */
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#include "fd-util.h"
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#include "fileio.h"
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#include "fs-util.h"
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#include "fuzz.h"
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#include "fuzz-journald.h"
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#include "journald-native.h"
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#include "memfd-util.h"
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#include "process-util.h"
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int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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Server s;
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_cleanup_close_ int sealed_fd = -1, unsealed_fd = -1;
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_cleanup_(unlink_tempfilep) char name[] = "/tmp/fuzz-journald-native-fd.XXXXXX";
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char *label = NULL;
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size_t label_len = 0;
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struct ucred ucred;
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struct timeval *tv = NULL;
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if (!getenv("SYSTEMD_LOG_LEVEL"))
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log_set_max_level(LOG_CRIT);
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dummy_server_init(&s, NULL, 0);
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sealed_fd = memfd_new(NULL);
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assert_se(sealed_fd >= 0);
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assert_se(write(sealed_fd, data, size) == (ssize_t) size);
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assert_se(memfd_set_sealed(sealed_fd) >= 0);
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assert_se(lseek(sealed_fd, 0, SEEK_SET) == 0);
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ucred = (struct ucred) {
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.pid = getpid_cached(),
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.uid = geteuid(),
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.gid = getegid(),
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};
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server_process_native_file(&s, sealed_fd, &ucred, tv, label, label_len);
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unsealed_fd = mkostemp_safe(name);
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assert_se(unsealed_fd >= 0);
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assert_se(write(unsealed_fd, data, size) == (ssize_t) size);
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assert_se(lseek(unsealed_fd, 0, SEEK_SET) == 0);
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server_process_native_file(&s, unsealed_fd, &ucred, tv, label, label_len);
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server_done(&s);
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return 0;
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}
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@ -74,6 +74,12 @@ fuzzers += [
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libshared],
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[libselinux]],
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[['src/fuzz/fuzz-journald-native-fd.c',
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'src/fuzz/fuzz-journald.c'],
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[libjournal_core,
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libshared],
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[libselinux]],
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[['src/fuzz/fuzz-journald-stream.c',
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'src/fuzz/fuzz-journald.c'],
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[libjournal_core,
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BIN
test/fuzz/fuzz-journald-native-fd/basic
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BIN
test/fuzz/fuzz-journald-native-fd/basic
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