1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_BOOTVFS_H 27 #define _SYS_BOOTVFS_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #include <sys/bootstat.h> 34 #include <sys/dirent.h> 35 36 /* same as those in /usr/include/unistd.h */ 37 #define SEEK_SET 0 /* Offset */ 38 #define SEEK_CUR 1 /* Current + Offset */ 39 #define SEEK_END 2 /* EOF + Offset */ 40 41 /* mountroot/unmountroot return values */ 42 #define VFS_SUCCESS 0 43 #define VFS_FAILURE -1 44 45 /* 46 * unified (vfs-like) file system operations for booters 47 */ 48 49 struct boot_fs_ops { 50 char *fsw_name; 51 int (*fsw_mountroot)(char *str); 52 int (*fsw_unmountroot)(void); 53 int (*fsw_open)(char *filename, int flags); 54 int (*fsw_close)(int fd); 55 ssize_t (*fsw_read)(int fd, caddr_t buf, size_t size); 56 off_t (*fsw_lseek)(int filefd, off_t addr, int whence); 57 int (*fsw_fstat)(int filefd, struct bootstat *buf); 58 void (*fsw_closeall)(int flag); 59 int (*fsw_getdents)(int fd, struct dirent *buf, unsigned size); 60 }; 61 62 /* 63 * Function prototypes 64 * 65 * fstat() (if exists) supports size and mode right now. 66 */ 67 68 extern struct boot_fs_ops *bfs_ops; 69 70 #ifdef _KERNEL 71 72 extern int BRD_MOUNTROOT(struct boot_fs_ops *, char *); 73 extern int BRD_UNMOUNTROOT(struct boot_fs_ops *); 74 extern int BRD_OPEN(struct boot_fs_ops *, char *, int); 75 extern int BRD_CLOSE(struct boot_fs_ops *, int); 76 extern ssize_t BRD_READ(struct boot_fs_ops *, int, caddr_t, size_t); 77 extern off_t BRD_SEEK(struct boot_fs_ops *, int, off_t, int); 78 extern int BRD_FSTAT(struct boot_fs_ops *, int, struct bootstat *); 79 80 #else 81 82 #define BRD_MOUNTROOT(ops, str) ((ops)->fsw_mountroot)(str) 83 #define BRD_UNMOUNTROOT(ops) ((ops)->fsw_unmountroot)() 84 #define BRD_OPEN(ops, file, flag) ((ops)->fsw_open)(file, flag) 85 #define BRD_CLOSE(ops, fd) ((ops)->fsw_close)(fd) 86 #define BRD_READ(ops, fd, buf, s) ((ops)->fsw_read)(fd, buf, s) 87 #define BRD_SEEK(ops, fd, addr, w) ((ops)->fsw_lseek)(fd, addr, w) 88 #define BRD_FSTAT(ops, fd, stp) ((ops)->fsw_fstat)(fd, stp) 89 90 #endif 91 92 #define SYSTEM_BOOT_PATH "/system/boot" 93 #define BFD_F_SYSTEM_BOOT 0x40000000 94 95 #ifdef _BOOT 96 97 extern int mountroot(char *str); 98 extern int unmountroot(void); 99 extern int open(const char *filename, int flags); 100 extern int close(int fd); 101 extern ssize_t read(int fd, void *buf, size_t size); 102 extern off_t lseek(int filefd, off_t addr, int whence); 103 extern void closeall(int flag); 104 105 #endif /* _BOOT */ 106 107 #ifdef __cplusplus 108 } 109 #endif 110 111 #endif /* _SYS_BOOTVFS_H */ 112