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 2008 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/filep.h> 36 #include <sys/dirent.h> 37 #include <sys/bootstat.h> 38 39 /* same as those in /usr/include/unistd.h */ 40 #define SEEK_SET 0 /* Offset */ 41 #define SEEK_CUR 1 /* Current + Offset */ 42 #define SEEK_END 2 /* EOF + Offset */ 43 44 /* mountroot/unmountroot return values */ 45 #define VFS_SUCCESS 0 46 #define VFS_FAILURE -1 47 48 /* 49 * unified (vfs-like) file system operations for booters 50 */ 51 52 struct boot_fs_ops { 53 char *fsw_name; 54 int (*fsw_mountroot)(char *str); 55 int (*fsw_unmountroot)(void); 56 int (*fsw_open)(char *filename, int flags); 57 int (*fsw_close)(int fd); 58 ssize_t (*fsw_read)(int fd, caddr_t buf, size_t size); 59 off_t (*fsw_lseek)(int filefd, off_t addr, int whence); 60 int (*fsw_fstat)(int filefd, struct bootstat *buf); 61 void (*fsw_closeall)(int flag); 62 int (*fsw_getdents)(int fd, struct dirent *buf, unsigned size); 63 }; 64 65 /* 66 * Function prototypes 67 * 68 * fstat() (if exists) supports size and mode right now. 69 */ 70 71 extern int mountroot(char *str); 72 extern int unmountroot(void); 73 extern int open(const char *filename, int flags); 74 extern int close(int fd); 75 extern ssize_t read(int fd, void *buf, size_t size); 76 extern off_t lseek(int filefd, off_t addr, int whence); 77 extern int fstat(int fd, struct stat *buf); 78 extern int stat(const char *filename, struct stat *buf); 79 80 /* 81 * The compfs filesystem provides additional fsswitch-like entry points, 82 * though these are not yet hooked properly into the fsswitch. 83 */ 84 85 extern void closeall(int flag); 86 87 extern ssize_t kern_read(int fd, caddr_t buf, size_t size); 88 extern int kern_open(char *filename, int flags); 89 extern off_t kern_seek(int fd, off_t hi, off_t lo); 90 extern off_t kern_lseek(int fd, off_t hi, off_t lo); 91 extern int kern_close(int fd); 92 extern int kern_fstat(int fd, struct bootstat *buf); 93 extern int kern_getdents(int fd, struct dirent *buf, size_t size); 94 extern int kern_mountroot(char *path); 95 extern int kern_unmountroot(void); 96 97 /* 98 * these are for common fs switch interface routines 99 */ 100 extern int boot_no_ops(void); /* no ops entry */ 101 extern void boot_no_ops_void(void); /* no ops entry */ 102 103 extern struct boot_fs_ops *get_default_fs(void); 104 extern struct boot_fs_ops *get_fs_ops_pointer(char *fsw_name); 105 extern void set_default_fs(char *fsw_name); 106 extern void clr_default_fs(void); 107 extern char *set_fstype(char *v2path, char *bpath); 108 109 #ifdef __cplusplus 110 } 111 #endif 112 113 #endif /* _SYS_BOOTVFS_H */ 114