| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include "fuzz.h" |
| |
| #include <sys/mman.h> |
| |
| #include "sd-journal.h" |
| |
| #include "env-util.h" |
| #include "fd-util.h" |
| #include "fileio.h" |
| #include "fs-util.h" |
| #include "journal-remote.h" |
| #include "logs-show.h" |
| #include "memfd-util.h" |
| #include "strv.h" |
| |
| int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { |
| int fdin; |
| void *mem; |
| _cleanup_(unlink_tempfilep) char name[] = "/tmp/fuzz-journal-remote.XXXXXX.journal"; |
| _cleanup_close_ int fdout = -1; |
| _cleanup_(sd_journal_closep) sd_journal *j = NULL; |
| RemoteServer s = {}; |
| int r; |
| |
| if (size <= 2) |
| return 0; |
| |
| if (!getenv("SYSTEMD_LOG_LEVEL")) |
| log_set_max_level(LOG_ERR); |
| |
| fdin = memfd_new_and_map("fuzz-journal-remote", size, &mem); |
| if (fdin < 0) |
| return log_error_errno(fdin, "memfd_new_and_map() failed: %m"); |
| |
| memcpy(mem, data, size); |
| assert_se(munmap(mem, size) == 0); |
| |
| fdout = mkostemps(name, STRLEN(".journal"), O_CLOEXEC); |
| if (fdout < 0) |
| return log_error_errno(errno, "mkostemps() failed: %m"); |
| |
| /* In */ |
| |
| r = journal_remote_server_init(&s, name, JOURNAL_WRITE_SPLIT_NONE, false, false); |
| if (r < 0) { |
| assert_se(IN_SET(r, -ENOMEM, -EMFILE, -ENFILE)); |
| return r; |
| } |
| |
| r = journal_remote_add_source(&s, fdin, (char*) "fuzz-data", false); |
| if (r < 0) { |
| safe_close(fdin); |
| return r; |
| } |
| assert(r > 0); |
| |
| while (s.active) |
| assert_se(journal_remote_handle_raw_source(NULL, fdin, 0, &s) >= 0); |
| |
| journal_remote_server_destroy(&s); |
| assert_se(close(fdin) < 0 && errno == EBADF); /* Check that the fd is closed already */ |
| |
| /* Out */ |
| |
| r = sd_journal_open_files(&j, (const char**) STRV_MAKE(name), 0); |
| if (r < 0) { |
| log_error_errno(r, "sd_journal_open_files([\"%s\"]) failed: %m", name); |
| assert_se(IN_SET(r, -ENOMEM, -EMFILE, -ENFILE)); |
| return r; |
| } |
| |
| _cleanup_fclose_ FILE *dev_null = NULL; |
| if (getenv_bool("SYSTEMD_FUZZ_OUTPUT") <= 0) { |
| dev_null = fopen("/dev/null", "we"); |
| if (!dev_null) |
| return log_error_errno(errno, "fopen(\"/dev/null\") failed: %m"); |
| } |
| |
| for (OutputMode mode = 0; mode < _OUTPUT_MODE_MAX; mode++) { |
| if (!dev_null) |
| log_info("/* %s */", output_mode_to_string(mode)); |
| r = show_journal(dev_null ?: stdout, j, mode, 0, 0, -1, 0, NULL); |
| assert_se(r >= 0); |
| |
| r = sd_journal_seek_head(j); |
| assert_se(r >= 0); |
| } |
| |
| return 0; |
| } |