stand.h revision 1.4
1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)stand.h 8.1 (Berkeley) 6/11/93 34 * $Id: stand.h,v 1.4 1994/08/22 21:56:13 brezak Exp $ 35 */ 36 37 #include <sys/types.h> 38 #include <sys/cdefs.h> 39 #include <sys/stat.h> 40 #include "saioctl.h" 41 #include "saerrno.h" 42 43 #ifndef NULL 44 #define NULL 0 45 #endif 46 47 struct open_file; 48 49 /* 50 * This structure is used to define file system operations in a file system 51 * independent way. 52 */ 53 struct fs_ops { 54 int (*open) __P((char *path, struct open_file *f)); 55 int (*close) __P((struct open_file *f)); 56 int (*read) __P((struct open_file *f, char *buf, 57 u_int size, u_int *resid)); 58 int (*write) __P((struct open_file *f, char *buf, 59 u_int size, u_int *resid)); 60 off_t (*seek) __P((struct open_file *f, off_t offset, int where)); 61 int (*stat) __P((struct open_file *f, struct stat *sb)); 62 }; 63 64 extern struct fs_ops file_system[]; 65 66 /* where values for lseek(2) */ 67 #define SEEK_SET 0 /* set file offset to offset */ 68 #define SEEK_CUR 1 /* set file offset to current plus offset */ 69 #define SEEK_END 2 /* set file offset to EOF plus offset */ 70 71 /* Device switch */ 72 struct devsw { 73 char *dv_name; 74 int (*dv_strategy) __P((void *devdata, int rw, 75 daddr_t blk, u_int size, char *buf, u_int *rsize)); 76 int (*dv_open) __P((struct open_file *f, ...)); 77 int (*dv_close) __P((struct open_file *f)); 78 int (*dv_ioctl) __P((struct open_file *f, int cmd, void *data)); 79 }; 80 81 extern struct devsw devsw[]; /* device array */ 82 extern int ndevs; /* number of elements in devsw[] */ 83 84 struct open_file { 85 int f_flags; /* see F_* below */ 86 struct devsw *f_dev; /* pointer to device operations */ 87 void *f_devdata; /* device specific data */ 88 struct fs_ops *f_ops; /* pointer to file system operations */ 89 void *f_fsdata; /* file system specific data */ 90 }; 91 92 #define SOPEN_MAX 4 93 extern struct open_file files[SOPEN_MAX]; 94 extern int nfsys; 95 96 /* f_flags values */ 97 #define F_READ 0x0001 /* file opened for reading */ 98 #define F_WRITE 0x0002 /* file opened for writing */ 99 #define F_RAW 0x0004 /* raw device open - no file system */ 100 #define F_NODEV 0x0008 /* network open - no device */ 101 102 #define isupper(c) ((c) >= 'A' && (c) <= 'Z') 103 #define tolower(c) ((c) - 'A' + 'a') 104 #define isspace(c) ((c) == ' ' || (c) == '\t') 105 #define isdigit(c) ((c) >= '0' && (c) <= '9') 106 107 int devopen __P((struct open_file *f, char *fname, char **file)); 108 void *alloc __P((unsigned size)); 109 void free __P((void *ptr, unsigned size)); 110 struct disklabel; 111 char *getdisklabel __P((const char *buf, struct disklabel *lp)); 112 113 void printf __P((const char *, ...)); 114 void gets __P((char *)); 115 void panic __P((const char *, ...)); 116 int getchar __P((void)); 117 int exec __P((char *, char *, int)); 118 int open __P((char *,int)); 119 int close __P((int)); 120 int read __P((int, void *, u_int)); 121 int write __P((int, void *, u_int)); 122 123 int nodev(), noioctl(); 124 void nullsys(); 125 126 int null_open __P((char *path, struct open_file *f)); 127 int null_close __P((struct open_file *f)); 128 int null_read __P((struct open_file *f, char *buf, 129 u_int size, u_int *resid)); 130 int null_write __P((struct open_file *f, char *buf, 131 u_int size, u_int *resid)); 132 off_t null_seek __P((struct open_file *f, off_t offset, int where)); 133 int null_stat __P((struct open_file *f, struct stat *sb)); 134 135 /* Machine dependent functions */ 136 void machdep_start __P((char *, int, char *, char *, char *)); 137 int machdep_exec __P((char *, char *, int)); 138 int getchar __P((void)); 139 void putchar __P((int)); 140
Indexes created Fri Sep 26 20:09:58 GMT 2025