1 /*- 2 * Copyright (c) 2021 Colin Percival 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/types.h> 28 29 #include <stand.h> 30 31 #include "bootstrap.h" 32 33 /* Buffer for holding tslog data in string format. */ 34 #ifndef LOADER_TSLOGSIZE 35 #define LOADER_TSLOGSIZE (2 * 1024 * 1024) 36 #endif 37 38 int 39 tslog_init(void) 40 { 41 void * tslog_buf; 42 43 /* Allocate buffer and pass to libsa tslog code. */ 44 if ((tslog_buf = malloc(LOADER_TSLOGSIZE)) == NULL) 45 return (-1); 46 tslog_setbuf(tslog_buf, LOADER_TSLOGSIZE); 47 48 /* Record this as when we entered the loader. */ 49 TSRAW("ENTER", "loader", NULL); 50 51 return (0); 52 } 53 54 /* 55 * Pass our tslog buffer as a preloaded "module" to the kernel. This should 56 * be called as late as possible prior to the kernel being executed, since 57 * any timestamps logged after this is called will not be visible to the 58 * kernel. 59 */ 60 int 61 tslog_publish(void) 62 { 63 void * tslog_buf; 64 size_t tslog_bufpos; 65 66 /* Record a log entry for ending logging. */ 67 TSRAW("EXIT", "loader", NULL); 68 69 /* Get the buffer and its current length. */ 70 tslog_getbuf(&tslog_buf, &tslog_bufpos); 71 72 /* If we never allocated a buffer, return an error. */ 73 if (tslog_buf == NULL) 74 return (-1); 75 76 /* Store the buffer where the kernel can read it. */ 77 return (file_addbuf("TSLOG", "TSLOG data", tslog_bufpos, tslog_buf)); 78 } 79