2 * Copyright (c) 2021 Colin Percival
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/types.h>
34 #include "bootstrap.h"
36 /* Buffer for holding tslog data in string format. */
37 #ifndef LOADER_TSLOGSIZE
38 #define LOADER_TSLOGSIZE (2 * 1024 * 1024)
46 /* Allocate buffer and pass to libsa tslog code. */
47 if ((tslog_buf = malloc(LOADER_TSLOGSIZE)) == NULL)
49 tslog_setbuf(tslog_buf, LOADER_TSLOGSIZE);
51 /* Record this as when we entered the loader. */
52 TSRAW("ENTER", "loader", NULL);
58 * Pass our tslog buffer as a preloaded "module" to the kernel. This should
59 * be called as late as possible prior to the kernel being executed, since
60 * any timestamps logged after this is called will not be visible to the
69 /* Record a log entry for ending logging. */
70 TSRAW("EXIT", "loader", NULL);
72 /* Get the buffer and its current length. */
73 tslog_getbuf(&tslog_buf, &tslog_bufpos);
75 /* If we never allocated a buffer, return an error. */
76 if (tslog_buf == NULL)
79 /* Store the buffer where the kernel can read it. */
80 return (file_addbuf("TSLOG", "TSLOG data", tslog_bufpos, tslog_buf));