1 /* 2 * Copyright (c) 1998 Michael Smith. 3 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 * From $NetBSD: stand.h,v 1.22 1997/06/26 19:17:40 drochner Exp $ 28 */ 29 30 /*- 31 * Copyright (c) 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 4. Neither the name of the University nor the names of its contributors 43 * may be used to endorse or promote products derived from this software 44 * without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 * 58 * @(#)stand.h 8.1 (Berkeley) 6/11/93 59 */ 60 61 #ifndef STAND_H 62 #define STAND_H 63 64 #include <sys/types.h> 65 #include <sys/cdefs.h> 66 #include <sys/stat.h> 67 #include <sys/dirent.h> 68 69 /* this header intentionally exports NULL from <string.h> */ 70 #include <string.h> 71 72 #define CHK(fmt, args...) printf("%s(%d): " fmt "\n", __func__, __LINE__ , ##args) 73 #define PCHK(fmt, args...) {printf("%s(%d): " fmt "\n", __func__, __LINE__ , ##args); getchar();} 74 75 /* Avoid unwanted userlandish components */ 76 #define _KERNEL 77 #include <sys/errno.h> 78 #undef _KERNEL 79 80 /* special stand error codes */ 81 #define EADAPT (ELAST+1) /* bad adaptor */ 82 #define ECTLR (ELAST+2) /* bad controller */ 83 #define EUNIT (ELAST+3) /* bad unit */ 84 #define ESLICE (ELAST+4) /* bad slice */ 85 #define EPART (ELAST+5) /* bad partition */ 86 #define ERDLAB (ELAST+6) /* can't read disk label */ 87 #define EUNLAB (ELAST+7) /* unlabeled disk */ 88 #define EOFFSET (ELAST+8) /* relative seek not supported */ 89 #define ESALAST (ELAST+8) /* */ 90 91 struct open_file; 92 93 /* 94 * This structure is used to define file system operations in a file system 95 * independent way. 96 * 97 * XXX note that filesystem providers should export a pointer to their fs_ops 98 * struct, so that consumers can reference this and thus include the 99 * filesystems that they require. 100 */ 101 struct fs_ops { 102 const char *fs_name; 103 int (*fo_open)(const char *path, struct open_file *f); 104 int (*fo_close)(struct open_file *f); 105 int (*fo_read)(struct open_file *f, void *buf, 106 size_t size, size_t *resid); 107 int (*fo_write)(struct open_file *f, void *buf, 108 size_t size, size_t *resid); 109 off_t (*fo_seek)(struct open_file *f, off_t offset, int where); 110 int (*fo_stat)(struct open_file *f, struct stat *sb); 111 int (*fo_readdir)(struct open_file *f, struct dirent *d); 112 }; 113 114 /* 115 * libstand-supplied filesystems 116 */ 117 extern struct fs_ops ufs_fsops; 118 extern struct fs_ops tftp_fsops; 119 extern struct fs_ops nfs_fsops; 120 extern struct fs_ops cd9660_fsops; 121 extern struct fs_ops nandfs_fsops; 122 extern struct fs_ops gzipfs_fsops; 123 extern struct fs_ops bzipfs_fsops; 124 extern struct fs_ops dosfs_fsops; 125 extern struct fs_ops ext2fs_fsops; 126 extern struct fs_ops splitfs_fsops; 127 extern struct fs_ops pkgfs_fsops; 128 129 /* where values for lseek(2) */ 130 #define SEEK_SET 0 /* set file offset to offset */ 131 #define SEEK_CUR 1 /* set file offset to current plus offset */ 132 #define SEEK_END 2 /* set file offset to EOF plus offset */ 133 134 /* 135 * Device switch 136 */ 137 struct devsw { 138 const char dv_name[8]; 139 int dv_type; /* opaque type constant, arch-dependant */ 140 int (*dv_init)(void); /* early probe call */ 141 int (*dv_strategy)(void *devdata, int rw, daddr_t blk, 142 size_t size, char *buf, size_t *rsize); 143 int (*dv_open)(struct open_file *f, ...); 144 int (*dv_close)(struct open_file *f); 145 int (*dv_ioctl)(struct open_file *f, u_long cmd, void *data); 146 int (*dv_print)(int verbose); /* print device information */ 147 void (*dv_cleanup)(void); 148 }; 149 150 /* 151 * libstand-supplied device switch 152 */ 153 extern struct devsw netdev; 154 155 extern int errno; 156 157 /* 158 * Generic device specifier; architecture-dependent 159 * versions may be larger, but should be allowed to 160 * overlap. 161 */ 162 struct devdesc 163 { 164 struct devsw *d_dev; 165 int d_type; 166 #define DEVT_NONE 0 167 #define DEVT_DISK 1 168 #define DEVT_NET 2 169 #define DEVT_CD 3 170 #define DEVT_ZFS 4 171 #define DEVT_FD 5 172 int d_unit; 173 void *d_opendata; 174 }; 175 176 struct open_file { 177 int f_flags; /* see F_* below */ 178 struct devsw *f_dev; /* pointer to device operations */ 179 void *f_devdata; /* device specific data */ 180 struct fs_ops *f_ops; /* pointer to file system operations */ 181 void *f_fsdata; /* file system specific data */ 182 off_t f_offset; /* current file offset */ 183 char *f_rabuf; /* readahead buffer pointer */ 184 size_t f_ralen; /* valid data in readahead buffer */ 185 off_t f_raoffset; /* consumer offset in readahead buffer */ 186 #define SOPEN_RASIZE 512 187 }; 188 189 #define SOPEN_MAX 64 190 extern struct open_file files[]; 191 192 /* f_flags values */ 193 #define F_READ 0x0001 /* file opened for reading */ 194 #define F_WRITE 0x0002 /* file opened for writing */ 195 #define F_RAW 0x0004 /* raw device open - no file system */ 196 #define F_NODEV 0x0008 /* network open - no device */ 197 #define F_GZIP 0x0010 /* file is compressed by gzip */ 198 #define F_BZIP 0x0020 /* file is compressed by bzip */ 199 #define F_MASK 0xFFFF 200 /* Mode modifier for strategy() */ 201 #define F_NORA (0x01 << 16) /* Disable Read-Ahead */ 202 203 #define isascii(c) (((c) & ~0x7F) == 0) 204 205 static __inline int isupper(int c) 206 { 207 return c >= 'A' && c <= 'Z'; 208 } 209 210 static __inline int islower(int c) 211 { 212 return c >= 'a' && c <= 'z'; 213 } 214 215 static __inline int isspace(int c) 216 { 217 return c == ' ' || (c >= 0x9 && c <= 0xd); 218 } 219 220 static __inline int isdigit(int c) 221 { 222 return c >= '0' && c <= '9'; 223 } 224 225 static __inline int isxdigit(int c) 226 { 227 return isdigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'); 228 } 229 230 static __inline int isalpha(int c) 231 { 232 return isupper(c) || islower(c); 233 } 234 235 static __inline int isalnum(int c) 236 { 237 return isalpha(c) || isdigit(c); 238 } 239 240 static __inline int toupper(int c) 241 { 242 return islower(c) ? c - 'a' + 'A' : c; 243 } 244 245 static __inline int tolower(int c) 246 { 247 return isupper(c) ? c - 'A' + 'a' : c; 248 } 249 250 /* sbrk emulation */ 251 extern void setheap(void *base, void *top); 252 extern char *sbrk(int incr); 253 254 /* Matt Dillon's zalloc/zmalloc */ 255 extern void *malloc(size_t bytes); 256 extern void free(void *ptr); 257 /*#define free(p) {CHK("free %p", p); free(p);} */ /* use for catching guard violations */ 258 extern void *calloc(size_t n1, size_t n2); 259 extern void *realloc(void *ptr, size_t size); 260 extern void *reallocf(void *ptr, size_t size); 261 extern void mallocstats(void); 262 263 extern int printf(const char *fmt, ...) __printflike(1, 2); 264 extern void vprintf(const char *fmt, __va_list); 265 extern int asprintf(char **buf, const char *cfmt, ...) __printflike(2, 3); 266 extern int sprintf(char *buf, const char *cfmt, ...) __printflike(2, 3); 267 extern int snprintf(char *buf, size_t size, const char *cfmt, ...) __printflike(3, 4); 268 extern void vsprintf(char *buf, const char *cfmt, __va_list); 269 extern void vsnprintf(char *buf, size_t size, const char *cfmt, __va_list); 270 271 extern void twiddle(u_int callerdiv); 272 extern void twiddle_divisor(u_int globaldiv); 273 274 extern void ngets(char *, int); 275 #define gets(x) ngets((x), 0) 276 extern int fgetstr(char *buf, int size, int fd); 277 278 extern int open(const char *, int); 279 #define O_RDONLY 0x0 280 #define O_WRONLY 0x1 281 #define O_RDWR 0x2 282 extern int close(int); 283 extern void closeall(void); 284 extern ssize_t read(int, void *, size_t); 285 extern ssize_t write(int, void *, size_t); 286 extern struct dirent *readdirfd(int); 287 288 extern void srandom(u_long seed); 289 extern u_long random(void); 290 291 /* imports from stdlib, locally modified */ 292 extern long strtol(const char *, char **, int); 293 extern unsigned long strtoul(const char *, char **, int); 294 extern char *optarg; /* getopt(3) external variables */ 295 extern int optind, opterr, optopt, optreset; 296 extern int getopt(int, char * const [], const char *); 297 298 /* pager.c */ 299 extern void pager_open(void); 300 extern void pager_close(void); 301 extern int pager_output(const char *lines); 302 extern int pager_file(const char *fname); 303 304 /* No signal state to preserve */ 305 #define setjmp _setjmp 306 #define longjmp _longjmp 307 308 /* environment.c */ 309 #define EV_DYNAMIC (1<<0) /* value was dynamically allocated, free if changed/unset */ 310 #define EV_VOLATILE (1<<1) /* value is volatile, make a copy of it */ 311 #define EV_NOHOOK (1<<2) /* don't call hook when setting */ 312 313 struct env_var; 314 typedef char *(ev_format_t)(struct env_var *ev); 315 typedef int (ev_sethook_t)(struct env_var *ev, int flags, 316 const void *value); 317 typedef int (ev_unsethook_t)(struct env_var *ev); 318 319 struct env_var 320 { 321 char *ev_name; 322 int ev_flags; 323 void *ev_value; 324 ev_sethook_t *ev_sethook; 325 ev_unsethook_t *ev_unsethook; 326 struct env_var *ev_next, *ev_prev; 327 }; 328 extern struct env_var *environ; 329 330 extern struct env_var *env_getenv(const char *name); 331 extern int env_setenv(const char *name, int flags, 332 const void *value, ev_sethook_t sethook, 333 ev_unsethook_t unsethook); 334 extern char *getenv(const char *name); 335 extern int setenv(const char *name, const char *value, 336 int overwrite); 337 extern int putenv(const char *string); 338 extern int unsetenv(const char *name); 339 340 extern ev_sethook_t env_noset; /* refuse set operation */ 341 extern ev_unsethook_t env_nounset; /* refuse unset operation */ 342 343 /* BCD conversions (undocumented) */ 344 extern u_char const bcd2bin_data[]; 345 extern u_char const bin2bcd_data[]; 346 extern char const hex2ascii_data[]; 347 348 #define bcd2bin(bcd) (bcd2bin_data[bcd]) 349 #define bin2bcd(bin) (bin2bcd_data[bin]) 350 #define hex2ascii(hex) (hex2ascii_data[hex]) 351 352 /* min/max (undocumented) */ 353 static __inline int imax(int a, int b) { return (a > b ? a : b); } 354 static __inline int imin(int a, int b) { return (a < b ? a : b); } 355 static __inline long lmax(long a, long b) { return (a > b ? a : b); } 356 static __inline long lmin(long a, long b) { return (a < b ? a : b); } 357 static __inline u_int max(u_int a, u_int b) { return (a > b ? a : b); } 358 static __inline u_int min(u_int a, u_int b) { return (a < b ? a : b); } 359 static __inline quad_t qmax(quad_t a, quad_t b) { return (a > b ? a : b); } 360 static __inline quad_t qmin(quad_t a, quad_t b) { return (a < b ? a : b); } 361 static __inline u_long ulmax(u_long a, u_long b) { return (a > b ? a : b); } 362 static __inline u_long ulmin(u_long a, u_long b) { return (a < b ? a : b); } 363 364 /* null functions for device/filesystem switches (undocumented) */ 365 extern int nodev(void); 366 extern int noioctl(struct open_file *, u_long, void *); 367 extern void nullsys(void); 368 369 extern int null_open(const char *path, struct open_file *f); 370 extern int null_close(struct open_file *f); 371 extern int null_read(struct open_file *f, void *buf, size_t size, size_t *resid); 372 extern int null_write(struct open_file *f, void *buf, size_t size, size_t *resid); 373 extern off_t null_seek(struct open_file *f, off_t offset, int where); 374 extern int null_stat(struct open_file *f, struct stat *sb); 375 extern int null_readdir(struct open_file *f, struct dirent *d); 376 377 378 /* 379 * Machine dependent functions and data, must be provided or stubbed by 380 * the consumer 381 */ 382 extern int getchar(void); 383 extern int ischar(void); 384 extern void putchar(int); 385 extern int devopen(struct open_file *, const char *, const char **); 386 extern int devclose(struct open_file *f); 387 extern void panic(const char *, ...) __dead2 __printflike(1, 2); 388 extern struct fs_ops *file_system[]; 389 extern struct fs_ops *exclusive_file_system; 390 extern struct devsw *devsw[]; 391 392 /* 393 * Expose byteorder(3) functions. 394 */ 395 #ifndef _BYTEORDER_PROTOTYPED 396 #define _BYTEORDER_PROTOTYPED 397 extern uint32_t htonl(uint32_t); 398 extern uint16_t htons(uint16_t); 399 extern uint32_t ntohl(uint32_t); 400 extern uint16_t ntohs(uint16_t); 401 #endif 402 403 #ifndef _BYTEORDER_FUNC_DEFINED 404 #define _BYTEORDER_FUNC_DEFINED 405 #define htonl(x) __htonl(x) 406 #define htons(x) __htons(x) 407 #define ntohl(x) __ntohl(x) 408 #define ntohs(x) __ntohs(x) 409 #endif 410 411 void *Malloc(size_t, const char *, int); 412 void *Calloc(size_t, size_t, const char *, int); 413 void *Realloc(void *, size_t, const char *, int); 414 void Free(void *, const char *, int); 415 416 #if 1 417 #define malloc(x) Malloc(x, __FILE__, __LINE__) 418 #define calloc(x, y) Calloc(x, y, __FILE__, __LINE__) 419 #define free(x) Free(x, __FILE__, __LINE__) 420 #define realloc(x, y) Realloc(x, y, __FILE__, __LINE__) 421 #else 422 #define malloc(x) Malloc(x, NULL, 0) 423 #define calloc(x, y) Calloc(x, y, NULL, 0) 424 #define free(x) Free(x, NULL, 0) 425 #define realloc(x, y) Realloc(x, y, NULL, 0) 426 #endif 427 428 #endif /* STAND_H */ 429