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 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #include <sys/bootstat.h> 36 #include <sys/dirent.h> 37 38 /* same as those in /usr/include/unistd.h */ 39 #define SEEK_SET 0 /* Offset */ 40 #define SEEK_CUR 1 /* Current + Offset */ 41 #define SEEK_END 2 /* EOF + Offset */ 42 43 /* mountroot/unmountroot return values */ 44 #define VFS_SUCCESS 0 45 #define VFS_FAILURE -1 46 47 /* 48 * unified (vfs-like) file system operations for booters 49 */ 50 51 struct boot_fs_ops { 52 char *fsw_name; 53 int (*fsw_mountroot)(char *str); 54 int (*fsw_unmountroot)(void); 55 int (*fsw_open)(char *filename, int flags); 56 int (*fsw_close)(int fd); 57 ssize_t (*fsw_read)(int fd, caddr_t buf, size_t size); 58 off_t (*fsw_lseek)(int filefd, off_t addr, int whence); 59 int (*fsw_fstat)(int filefd, struct bootstat *buf); 60 void (*fsw_closeall)(int flag); 61 int (*fsw_getdents)(int fd, struct dirent *buf, unsigned size); 62 }; 63 64 /* 65 * Function prototypes 66 * 67 * fstat() (if exists) supports size and mode right now. 68 */ 69 70 extern struct boot_fs_ops *bfs_ops; 71 72 #define BRD_MOUNTROOT(ops, str) ((ops)->fsw_mountroot)(str) 73 #define BRD_UNMOUNTROOT(ops) ((ops)->fsw_unmountroot)() 74 #define BRD_OPEN(ops, file, flag) ((ops)->fsw_open)(file, flag) 75 #define BRD_CLOSE(ops, fd) ((ops)->fsw_close)(fd) 76 #define BRD_READ(ops, fd, buf, s) ((ops)->fsw_read)(fd, buf, s) 77 #define BRD_SEEK(ops, fd, addr, w) ((ops)->fsw_lseek)(fd, addr, w) 78 #define BRD_FSTAT(ops, fd, stp) ((ops)->fsw_fstat)(fd, stp) 79 80 #ifdef _BOOT 81 82 extern int mountroot(char *str); 83 extern int unmountroot(void); 84 extern int open(const char *filename, int flags); 85 extern int close(int fd); 86 extern ssize_t read(int fd, void *buf, size_t size); 87 extern off_t lseek(int filefd, off_t addr, int whence); 88 extern void closeall(int flag); 89 90 #endif /* _BOOT */ 91 92 #ifdef __cplusplus 93 } 94 #endif 95 96 #endif /* _SYS_BOOTVFS_H */ 97