1/* $OpenBSD: stand.h,v 1.72 2021/12/01 17:25:35 kettenis Exp $ */ 2/* $NetBSD: stand.h,v 1.18 1996/11/30 04:35:51 gwr Exp $ */ 3 4/*- 5 * Copyright (c) 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)stand.h 8.1 (Berkeley) 6/11/93 33 */ 34 35#include <sys/types.h> 36#include <sys/stat.h> 37#include <sys/stdarg.h> 38#include <sys/stdint.h> 39#include "saerrno.h" 40 41#ifndef NULL 42#define NULL 0 43#endif 44 45struct open_file; 46 47/* 48 * Useful macros 49 */ 50/* don't define if libkern included */ 51#ifndef LIBKERN_INLINE 52#define max(a,b) (((a)>(b))? (a) : (b)) 53#define min(a,b) (((a)>(b))? (b) : (a)) 54#endif 55 56/* 57 * This structure is used to define file system operations in a file system 58 * independent way. 59 */ 60struct fs_ops { 61 int (*open)(char *path, struct open_file *f); 62 int (*close)(struct open_file *f); 63 int (*read)(struct open_file *f, void *buf, 64 size_t size, size_t *resid); 65 int (*write)(struct open_file *f, void *buf, 66 size_t size, size_t *resid); 67 off_t (*seek)(struct open_file *f, off_t offset, int where); 68 int (*stat)(struct open_file *f, struct stat *sb); 69 int (*readdir)(struct open_file *f, char *); 70 int (*fchmod)(struct open_file *f, mode_t); 71}; 72 73extern struct fs_ops file_system[]; 74extern int nfsys; 75 76/* where values for lseek(2) */ 77#define SEEK_SET 0 /* set file offset to offset */ 78#define SEEK_CUR 1 /* set file offset to current plus offset */ 79#define SEEK_END 2 /* set file offset to EOF plus offset */ 80 81/* Device switch */ 82struct devsw { 83 char *dv_name; 84 int (*dv_strategy)(void *devdata, int rw, 85 daddr_t blk, size_t size, 86 void *buf, size_t *rsize); 87 int (*dv_open)(struct open_file *f, ...); 88 int (*dv_close)(struct open_file *f); 89 int (*dv_ioctl)(struct open_file *f, u_long cmd, void *data); 90}; 91 92extern struct devsw devsw[]; /* device array */ 93extern int ndevs; /* number of elements in devsw[] */ 94 95extern struct consdev *cn_tab; 96 97struct open_file { 98 int f_flags; /* see F_* below */ 99 struct devsw *f_dev; /* pointer to device operations */ 100 void *f_devdata; /* device specific data */ 101 struct fs_ops *f_ops; /* pointer to file system operations */ 102 void *f_fsdata; /* file system specific data */ 103 off_t f_offset; /* current file offset (F_RAW) */ 104}; 105 106#define SOPEN_MAX 4 107extern struct open_file files[]; 108 109/* f_flags values */ 110#define F_READ 0x0001 /* file opened for reading */ 111#define F_WRITE 0x0002 /* file opened for writing */ 112#define F_RAW 0x0004 /* raw device open - no file system */ 113#define F_NODEV 0x0008 /* network open - no device */ 114#define F_NOWRITE 0x0010 /* bootblock writing broken or unsupported */ 115 116#define isupper(c) ((c) >= 'A' && (c) <= 'Z') 117#define islower(c) ((c) >= 'a' && (c) <= 'z') 118#define isalpha(c) (isupper(c)||islower(c)) 119#define tolower(c) (isupper(c)?((c) - 'A' + 'a'):(c)) 120#define toupper(c) (islower(c)?((c) - 'a' + 'A'):(c)) 121#define isspace(c) ((c) == ' ' || (c) == '\t') 122#define isdigit(c) ((c) >= '0' && (c) <= '9') 123 124#define btochs(b,c,h,s,nh,ns) \ 125 c = (b) / ((nh) * (ns)); \ 126 h = ((b) % ((nh) * (ns))) / (ns); \ 127 s = ((b) % ((nh) * (ns))) % (ns); 128 129void *alloc(u_int); 130void free(void *, u_int); 131struct disklabel; 132char *getdisklabel(const char *, struct disklabel *); 133u_int dkcksum(const struct disklabel *); 134 135#define BOOTRANDOM "/etc/random.seed" 136#define BOOTRANDOM_MAX 256 /* no point being greater than RC4STATE */ 137extern char rnddata[BOOTRANDOM_MAX]; 138 139void printf(const char *, ...); 140int snprintf(char *, size_t, const char *, ...); 141void vprintf(const char *, __va_list); 142void twiddle(void); 143void getln(char *, size_t); 144__dead void panic(const char *, ...) __attribute__((noreturn)); 145__dead void _rtt(void) __attribute__((noreturn)); 146#define bzero(s,n) ((void)memset((s),0,(n))) 147#define bcmp(s1,s2,n) (memcmp((s2),(s1),(n))) 148#define bcopy(s1,s2,n) ((void)memmove((s2),(s1),(n))) 149void explicit_bzero(void *, size_t); 150void hexdump(const void *, size_t); 151void *memcpy(void *, const void *, size_t); 152void *memmove(void *, const void *, size_t); 153int memcmp(const void *, const void *, size_t); 154char *strncpy(char *, const char *, size_t); 155int strncmp(const char *, const char *, size_t); 156int strcmp(const char *, const char *); 157size_t strlen(const char *); 158long strtol(const char *, char **, int); 159long long strtoll(const char *, char **, int); 160char *strchr(const char *, int); 161void *memset(void *, int, size_t); 162void exit(void); 163#define O_RDONLY 0x0000 /* open for reading only */ 164#define O_WRONLY 0x0001 /* open for writing only */ 165#define O_RDWR 0x0002 /* open for reading and writing */ 166int open(const char *, int); 167int close(int); 168void closeall(void); 169ssize_t read(int, void *, size_t); 170ssize_t write(int, void *, size_t); 171int stat(const char *path, struct stat *sb); 172int fstat(int fd, struct stat *sb); 173off_t lseek(int, off_t, int); 174int opendir(const char *); 175int readdir(int, char *); 176void closedir(int); 177int nodev(void); 178int noioctl(struct open_file *, u_long, void *); 179void nullsys(void); 180 181int null_open(char *path, struct open_file *f); 182int null_close(struct open_file *f); 183ssize_t null_read(struct open_file *f, void *buf, size_t size, size_t *resid); 184ssize_t null_write(struct open_file *f, void *buf, size_t size, size_t *resid); 185off_t null_seek(struct open_file *f, off_t offset, int where); 186int null_stat(struct open_file *f, struct stat *sb); 187int null_readdir(struct open_file *f, char *name); 188char *ttyname(int); /* match userland decl, but ignore !0 */ 189dev_t ttydev(char *); 190void cninit(void); 191int cnset(dev_t); 192void cnputc(int); 193int cngetc(void); 194int cnischar(void); 195int cnspeed(dev_t, int); 196u_int sleep(u_int); 197void usleep(u_int); 198char *ctime(const time_t *); 199 200int ioctl(int, u_long, char *); 201 202void putchar(int); 203int getchar(void); 204 205#ifdef __INTERNAL_LIBSA_CREAD 206int oopen(const char *, int); 207int oclose(int); 208ssize_t oread(int, void *, size_t); 209off_t olseek(int, off_t, int); 210#endif 211 212/* Machine dependent functions */ 213int devopen(struct open_file *, const char *, char **); 214void machdep_start(char *, int, char *, char *, char *); 215time_t getsecs(void); 216