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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1994-1996, 2002-2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_BOOTVFS_H 28 #define _SYS_BOOTVFS_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #include <sys/filep.h> 37 #include <sys/dirent.h> 38 #include <sys/bootstat.h> 39 40 /* same as those in /usr/include/unistd.h */ 41 #define SEEK_SET 0 /* Offset */ 42 #define SEEK_CUR 1 /* Current + Offset */ 43 #define SEEK_END 2 /* EOF + Offset */ 44 45 /* mountroot/unmountroot return values */ 46 #define VFS_SUCCESS 0 47 #define VFS_FAILURE -1 48 49 /* 50 * unified (vfs-like) file system operations for booters 51 */ 52 53 struct boot_fs_ops { 54 char *fsw_name; 55 int (*fsw_mountroot)(char *str); 56 int (*fsw_unmountroot)(void); 57 int (*fsw_open)(char *filename, int flags); 58 int (*fsw_close)(int fd); 59 ssize_t (*fsw_read)(int fd, caddr_t buf, size_t size); 60 off_t (*fsw_lseek)(int filefd, off_t addr, int whence); 61 int (*fsw_fstat)(int filefd, struct bootstat *buf); 62 void (*fsw_closeall)(int flag); 63 int (*fsw_getdents)(int fd, struct dirent *buf, unsigned size); 64 }; 65 66 /* 67 * Function prototypes 68 * 69 * fstat() (if exists) supports size and mode right now. 70 */ 71 72 extern int mountroot(char *str); 73 extern int unmountroot(void); 74 extern int open(const char *filename, int flags); 75 extern int close(int fd); 76 extern ssize_t read(int fd, void *buf, size_t size); 77 extern off_t lseek(int filefd, off_t addr, int whence); 78 extern int fstat(int fd, struct stat *buf); 79 extern int stat(const char *filename, struct stat *buf); 80 81 /* 82 * The compfs filesystem provides additional fsswitch-like entry points, 83 * though these are not yet hooked properly into the fsswitch. 84 */ 85 #ifdef __i386 86 extern int ftruncate(int, off_t); 87 extern int create(char *, ulong_t); 88 extern ssize_t write(int, const void *, size_t); 89 extern int rename(char *, char *); 90 extern int unlink(char *); 91 #endif 92 93 extern void closeall(int flag); 94 95 extern ssize_t kern_read(int fd, caddr_t buf, size_t size); 96 extern int kern_open(char *filename, int flags); 97 extern off_t kern_seek(int fd, off_t hi, off_t lo); 98 extern off_t kern_lseek(int fd, off_t hi, off_t lo); 99 extern int kern_close(int fd); 100 extern int kern_fstat(int fd, struct bootstat *buf); 101 extern int kern_getdents(int fd, struct dirent *buf, size_t size); 102 extern int kern_mountroot(char *path); 103 extern int kern_unmountroot(void); 104 105 /* 106 * these are for common fs switch interface routines 107 */ 108 extern int boot_no_ops(void); /* no ops entry */ 109 extern void boot_no_ops_void(void); /* no ops entry */ 110 111 extern struct boot_fs_ops *get_default_fs(void); 112 extern struct boot_fs_ops *get_fs_ops_pointer(char *fsw_name); 113 extern void set_default_fs(char *fsw_name); 114 extern void clr_default_fs(void); 115 extern char *set_fstype(char *v2path, char *bpath); 116 117 #ifdef __cplusplus 118 } 119 #endif 120 121 #endif /* _SYS_BOOTVFS_H */ 122