17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5342440ecSPrasad Singamsetty * Common Development and Distribution License (the "License"). 6342440ecSPrasad Singamsetty * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*af28f636SEnrico Perla - Sun Microsystems * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 237c478bd9Sstevel@tonic-gate */ 247c478bd9Sstevel@tonic-gate 257c478bd9Sstevel@tonic-gate #include <stdio.h> 267c478bd9Sstevel@tonic-gate #include <stdlib.h> 277c478bd9Sstevel@tonic-gate #include <unistd.h> 287c478bd9Sstevel@tonic-gate #include <sys/param.h> 297c478bd9Sstevel@tonic-gate #include <sys/bootvfs.h> 307c478bd9Sstevel@tonic-gate #include <sys/filep.h> 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate #include <libintl.h> 337c478bd9Sstevel@tonic-gate #include <locale.h> 347c478bd9Sstevel@tonic-gate #include "message.h" 357c478bd9Sstevel@tonic-gate 367c478bd9Sstevel@tonic-gate /* 377c478bd9Sstevel@tonic-gate * This file is glue layer to pcfs module in usr/src/common/fs/pcfs.c. 387c478bd9Sstevel@tonic-gate * It's main functionality is to get the stage file blocklist. It's 39*af28f636SEnrico Perla - Sun Microsystems * used for installing grub on a Solaris boot partition. 407c478bd9Sstevel@tonic-gate */ 417c478bd9Sstevel@tonic-gate extern struct boot_fs_ops bpcfs_ops; 427c478bd9Sstevel@tonic-gate struct boot_fs_ops *bfs_ops; 437c478bd9Sstevel@tonic-gate struct boot_fs_ops *bfs_tab[] = {&bpcfs_ops, NULL}; 447c478bd9Sstevel@tonic-gate static int dev_fd; 457c478bd9Sstevel@tonic-gate int bootrd_debug = 0; 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate #define DEV_BSIZE 512 487c478bd9Sstevel@tonic-gate #define MAX_CHUNK 64 497c478bd9Sstevel@tonic-gate 50342440ecSPrasad Singamsetty static unsigned int *blocklist; 517c478bd9Sstevel@tonic-gate 527c478bd9Sstevel@tonic-gate /* diskread_callback is set in filesytem module (pcfs.c) */ 537c478bd9Sstevel@tonic-gate int (*diskread_callback)(int, int); 547c478bd9Sstevel@tonic-gate int (*fileread_callback)(int, int); 557c478bd9Sstevel@tonic-gate 567c478bd9Sstevel@tonic-gate static int 577c478bd9Sstevel@tonic-gate add_stage2_block(int blocknum, int nblk) 587c478bd9Sstevel@tonic-gate { 597c478bd9Sstevel@tonic-gate static int i = -2; 607c478bd9Sstevel@tonic-gate 617c478bd9Sstevel@tonic-gate if (i >= 0 && (blocklist[i] + blocklist[i + 1] == blocknum)) { 627c478bd9Sstevel@tonic-gate blocklist[i + 1] += nblk; 637c478bd9Sstevel@tonic-gate return (0); 647c478bd9Sstevel@tonic-gate } 657c478bd9Sstevel@tonic-gate 667c478bd9Sstevel@tonic-gate i += 2; 677c478bd9Sstevel@tonic-gate if (i >= DEV_BSIZE / 8) { 687c478bd9Sstevel@tonic-gate fprintf(stderr, PCFS_FRAGMENTED); 697c478bd9Sstevel@tonic-gate exit(-1); 707c478bd9Sstevel@tonic-gate } 717c478bd9Sstevel@tonic-gate blocklist[i] = blocknum; 727c478bd9Sstevel@tonic-gate blocklist[i + 1] = nblk; 737c478bd9Sstevel@tonic-gate return (0); 747c478bd9Sstevel@tonic-gate } 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate /* 777c478bd9Sstevel@tonic-gate * This one reads the ramdisk. If fi_memp is set, we copy the 787c478bd9Sstevel@tonic-gate * ramdisk content to the designated buffer. Otherwise, we 797c478bd9Sstevel@tonic-gate * do a "cached" read (set fi_memp to the actual ramdisk buffer). 807c478bd9Sstevel@tonic-gate */ 817c478bd9Sstevel@tonic-gate int 827c478bd9Sstevel@tonic-gate diskread(fileid_t *filep) 837c478bd9Sstevel@tonic-gate { 847c478bd9Sstevel@tonic-gate int ret; 857c478bd9Sstevel@tonic-gate uint_t blocknum, diskloc; 867c478bd9Sstevel@tonic-gate 877c478bd9Sstevel@tonic-gate blocknum = filep->fi_blocknum; 887c478bd9Sstevel@tonic-gate 897c478bd9Sstevel@tonic-gate if (diskread_callback) { 907c478bd9Sstevel@tonic-gate diskread_callback(blocknum, filep->fi_count / DEV_BSIZE); 917c478bd9Sstevel@tonic-gate return (0); 927c478bd9Sstevel@tonic-gate } 937c478bd9Sstevel@tonic-gate 947c478bd9Sstevel@tonic-gate diskloc = blocknum * DEV_BSIZE; 957c478bd9Sstevel@tonic-gate if (filep->fi_memp == NULL) { 967c478bd9Sstevel@tonic-gate filep->fi_memp = malloc(filep->fi_count); 977c478bd9Sstevel@tonic-gate } 987c478bd9Sstevel@tonic-gate if (filep->fi_memp == NULL) { 997c478bd9Sstevel@tonic-gate fprintf(stderr, OUT_OF_MEMORY); 1007c478bd9Sstevel@tonic-gate return (-1); 1017c478bd9Sstevel@tonic-gate } 1027c478bd9Sstevel@tonic-gate 1037c478bd9Sstevel@tonic-gate ret = pread(dev_fd, filep->fi_memp, filep->fi_count, diskloc); 1047c478bd9Sstevel@tonic-gate if (ret < 0) 1057c478bd9Sstevel@tonic-gate perror("diskread: pread"); 1067c478bd9Sstevel@tonic-gate return (ret >= 0 ? 0 : -1); 1077c478bd9Sstevel@tonic-gate } 1087c478bd9Sstevel@tonic-gate 1097c478bd9Sstevel@tonic-gate void * 1107c478bd9Sstevel@tonic-gate bkmem_alloc(size_t s) 1117c478bd9Sstevel@tonic-gate { 1127c478bd9Sstevel@tonic-gate return (malloc(s)); 1137c478bd9Sstevel@tonic-gate } 1147c478bd9Sstevel@tonic-gate 1157c478bd9Sstevel@tonic-gate /*ARGSUSED*/ 1167c478bd9Sstevel@tonic-gate void 1177c478bd9Sstevel@tonic-gate bkmem_free(void *p, size_t s) 1187c478bd9Sstevel@tonic-gate { 1197c478bd9Sstevel@tonic-gate free(p); 1207c478bd9Sstevel@tonic-gate } 1217c478bd9Sstevel@tonic-gate 1227c478bd9Sstevel@tonic-gate static int 1237c478bd9Sstevel@tonic-gate mountroot(char *name) 1247c478bd9Sstevel@tonic-gate { 1257c478bd9Sstevel@tonic-gate int i; 1267c478bd9Sstevel@tonic-gate 1277c478bd9Sstevel@tonic-gate /* try ops in bfs_tab and return the first successful one */ 1287c478bd9Sstevel@tonic-gate for (i = 0; bfs_tab[i] != NULL; i++) { 1297c478bd9Sstevel@tonic-gate bfs_ops = bfs_tab[i]; 1307c478bd9Sstevel@tonic-gate if (BRD_MOUNTROOT(bfs_ops, name) == 0) 1317c478bd9Sstevel@tonic-gate return (0); 1327c478bd9Sstevel@tonic-gate } 1337c478bd9Sstevel@tonic-gate return (-1); 1347c478bd9Sstevel@tonic-gate } 1357c478bd9Sstevel@tonic-gate 1367c478bd9Sstevel@tonic-gate static int 1377c478bd9Sstevel@tonic-gate unmountroot() 1387c478bd9Sstevel@tonic-gate { 1397c478bd9Sstevel@tonic-gate return (BRD_UNMOUNTROOT(bfs_ops)); 1407c478bd9Sstevel@tonic-gate } 1417c478bd9Sstevel@tonic-gate 1427c478bd9Sstevel@tonic-gate static int 143*af28f636SEnrico Perla - Sun Microsystems pcfs_glue_open(const char *filename, int flags) 1447c478bd9Sstevel@tonic-gate { 1457c478bd9Sstevel@tonic-gate return (BRD_OPEN(bfs_ops, (char *)filename, flags)); 1467c478bd9Sstevel@tonic-gate } 1477c478bd9Sstevel@tonic-gate 1487c478bd9Sstevel@tonic-gate static int 149*af28f636SEnrico Perla - Sun Microsystems pcfs_glue_close(int fd) 1507c478bd9Sstevel@tonic-gate { 1517c478bd9Sstevel@tonic-gate return (BRD_CLOSE(bfs_ops, fd)); 1527c478bd9Sstevel@tonic-gate } 1537c478bd9Sstevel@tonic-gate 1547c478bd9Sstevel@tonic-gate static ssize_t 155*af28f636SEnrico Perla - Sun Microsystems pcfs_glue_read(int fd, void *buf, size_t size) 1567c478bd9Sstevel@tonic-gate { 1577c478bd9Sstevel@tonic-gate return (BRD_READ(bfs_ops, fd, buf, size)); 1587c478bd9Sstevel@tonic-gate } 1597c478bd9Sstevel@tonic-gate 1607c478bd9Sstevel@tonic-gate static off_t 161*af28f636SEnrico Perla - Sun Microsystems pcfs_glue_lseek(int fd, off_t addr, int whence) 1627c478bd9Sstevel@tonic-gate { 1637c478bd9Sstevel@tonic-gate return (BRD_SEEK(bfs_ops, fd, addr, whence)); 1647c478bd9Sstevel@tonic-gate } 1657c478bd9Sstevel@tonic-gate 1667c478bd9Sstevel@tonic-gate /* 1677c478bd9Sstevel@tonic-gate * Get the blocklist for stage2 1687c478bd9Sstevel@tonic-gate */ 1697c478bd9Sstevel@tonic-gate int 170342440ecSPrasad Singamsetty read_stage2_blocklist(int device_fd, unsigned int *blkbuf) 1717c478bd9Sstevel@tonic-gate { 1727c478bd9Sstevel@tonic-gate int i, fd, stage2_block; 1737c478bd9Sstevel@tonic-gate char buf[DEV_BSIZE]; 1747c478bd9Sstevel@tonic-gate ssize_t size; 1757c478bd9Sstevel@tonic-gate 1767c478bd9Sstevel@tonic-gate dev_fd = device_fd; 1777c478bd9Sstevel@tonic-gate if (mountroot("dummy") != 0) { 1787c478bd9Sstevel@tonic-gate fprintf(stderr, MOUNT_FAIL_PCFS); 1797c478bd9Sstevel@tonic-gate return (-1); 1807c478bd9Sstevel@tonic-gate } 1817c478bd9Sstevel@tonic-gate 182*af28f636SEnrico Perla - Sun Microsystems if ((fd = pcfs_glue_open("/boot/grub/stage2", 0)) == -1) { 1837c478bd9Sstevel@tonic-gate fprintf(stderr, OPEN_FAIL_PCFS); 1847c478bd9Sstevel@tonic-gate return (-1); 1857c478bd9Sstevel@tonic-gate } 1867c478bd9Sstevel@tonic-gate 1877c478bd9Sstevel@tonic-gate if (bootrd_debug) 1887c478bd9Sstevel@tonic-gate (void) printf("start reading stage2:\n"); 1897c478bd9Sstevel@tonic-gate stage2_block = 0; 1907c478bd9Sstevel@tonic-gate blocklist = blkbuf; 1917c478bd9Sstevel@tonic-gate fileread_callback = add_stage2_block; 1927c478bd9Sstevel@tonic-gate for (;;) { 193*af28f636SEnrico Perla - Sun Microsystems size = pcfs_glue_read(fd, buf, DEV_BSIZE); 1947c478bd9Sstevel@tonic-gate if (size != DEV_BSIZE) 1957c478bd9Sstevel@tonic-gate break; 1967c478bd9Sstevel@tonic-gate stage2_block++; 1977c478bd9Sstevel@tonic-gate } 1987c478bd9Sstevel@tonic-gate fileread_callback = NULL; 199*af28f636SEnrico Perla - Sun Microsystems (void) pcfs_glue_close(fd); 2007c478bd9Sstevel@tonic-gate 2017c478bd9Sstevel@tonic-gate if (bootrd_debug) { 2027c478bd9Sstevel@tonic-gate (void) printf("last block size = %d\n", size); 2037c478bd9Sstevel@tonic-gate for (i = 0; blocklist[i] != 0; i += 2) { 2047c478bd9Sstevel@tonic-gate (void) printf("sectors: %d-%d\n", 2057c478bd9Sstevel@tonic-gate blocklist[i], 2067c478bd9Sstevel@tonic-gate blocklist[i] + blocklist[i + 1] - 1); 2077c478bd9Sstevel@tonic-gate } 2087c478bd9Sstevel@tonic-gate (void) printf("total blocks in stage 2: %d\n", stage2_block); 2097c478bd9Sstevel@tonic-gate } 2107c478bd9Sstevel@tonic-gate 2117c478bd9Sstevel@tonic-gate (void) unmountroot(); 2127c478bd9Sstevel@tonic-gate return (0); 2137c478bd9Sstevel@tonic-gate } 214