static int stdout_stream_new(sd_event_source *es, int listen_fd, uint32_t revents, void *userdata) {
_cleanup_close_ int fd = -1;
Server *s = userdata;
int r;
assert(s);
if (revents != EPOLLIN) {
log_error("Got invalid event from epoll for stdout server fd: %"PRIx32, revents);
return -EIO;
}
fd = accept4(s->stdout_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC);
if (fd < 0) {
if (errno == EAGAIN)
return 0;
return log_error_errno(errno, "Failed to accept stdout connection: %m");
}
if (s->n_stdout_streams >= STDOUT_STREAMS_MAX) {
log_warning("Too many stdout streams, refusing connection.");
return 0;
}
r = stdout_stream_install(s, fd, NULL);
if (r < 0)
return r;
fd = -1;
return 0;
}
static int stdout_stream_restore(Server *s, const char *fname, int fd) {
StdoutStream *stream;
int r;
assert(s);
assert(fname);
assert(fd >= 0);
if (s->n_stdout_streams >= STDOUT_STREAMS_MAX) {
log_warning("Too many stdout streams, refusing restoring of stream.");
return -ENOBUFS;
}
r = stdout_stream_install(s, fd, &stream);
if (r < 0)
return r;
stream->state = STDOUT_STREAM_RUNNING;
stream->fdstore = true;
/* Ignore all parsing errors */
(void) stdout_stream_load(stream, fname);
return 0;
}
static int stdout_stream_new(sd_event_source *es, int listen_fd, uint32_t revents, void *userdata) {
_cleanup_close_ int fd = -1;
Server *s = userdata;
int r;
assert(s);
if (revents != EPOLLIN) {
log_error("Got invalid event from epoll for stdout server fd: %"PRIx32, revents);
return -EIO;
}
fd = accept4(s->stdout_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC);
if (fd < 0) {
if (errno == EAGAIN)
return 0;
return log_error_errno(errno, "Failed to accept stdout connection: %m");
}
if (s->n_stdout_streams >= STDOUT_STREAMS_MAX) {
struct ucred u;
r = getpeercred(fd, &u);
/* By closing fd here we make sure that the client won't wait too long for journald to
* gather all the data it adds to the error message to find out that the connection has
* just been refused.
*/
fd = safe_close(fd);
server_driver_message(s, r < 0 ? 0 : u.pid, NULL, LOG_MESSAGE("Too many stdout streams, refusing connection."), NULL);
return 0;
}
r = stdout_stream_install(s, fd, NULL);
if (r < 0)
return r;
fd = -1;
return 0;
}
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
Server s;
StdoutStream *stream;
int v;
if (size == 0 || size > 65536)
return 0;
if (!getenv("SYSTEMD_LOG_LEVEL"))
log_set_max_level(LOG_CRIT);
assert_se(socketpair(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0, stream_fds) >= 0);
dummy_server_init(&s, NULL, 0);
assert_se(stdout_stream_install(&s, stream_fds[0], &stream) >= 0);
assert_se(write(stream_fds[1], data, size) == (ssize_t) size);
while (ioctl(stream_fds[0], SIOCINQ, &v) == 0 && v)
sd_event_run(s.event, (uint64_t) -1);
if (s.n_stdout_streams)
stdout_stream_destroy(stream);
server_done(&s);
stream_fds[1] = safe_close(stream_fds[1]);
return 0;
}
