src/journal/fuzz-journald-stream.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <linux/sockios.h>
   4 #include <sys/ioctl.h>
   5 #include <unistd.h>
   6
   7 #include "fd-util.h"
   8 #include "fuzz.h"
   9 #include "fuzz-journald.h"
  10 #include "journald-stream.h"
  11
  12 static int stream_fds[2] = { -1, -1 };
  13
  14 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
  15         Server s;
  16         StdoutStream *stream;
  17         int v;
  18
  19         if (size == 0 || size > 65536)
  20                 return 0;
  21
  22         if (!getenv("SYSTEMD_LOG_LEVEL"))
  23                 log_set_max_level(LOG_CRIT);
  24
  25         assert_se(socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0, stream_fds) >= 0);
  26         dummy_server_init(&s, NULL, 0);
  27         assert_se(stdout_stream_install(&s, stream_fds[0], &stream) >= 0);
  28         assert_se(write(stream_fds[1], data, size) == (ssize_t) size);
  29         while (ioctl(stream_fds[0], SIOCINQ, &v) == 0 && v)
  30                 sd_event_run(s.event, (uint64_t) -1);
  31         if (s.n_stdout_streams)
  32                 stdout_stream_destroy(stream);
  33         server_done(&s);
  34         stream_fds[1] = safe_close(stream_fds[1]);
  35
  36         return 0;
  37 }