root/lib/libsa/stand.h

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INCLUDED FROM


    1 /*      $OpenBSD: stand.h,v 1.46 2007/05/04 21:44:07 reyk 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/cdefs.h>
   37 #include <sys/stat.h>
   38 #include <sys/stdarg.h>
   39 #include "saioctl.h"
   40 #include "saerrno.h"
   41 
   42 #ifndef NULL
   43 #define NULL    0
   44 #endif
   45 
   46 struct open_file;
   47 
   48 /*
   49  * Useful macros
   50  */
   51 #define NENTS(x)        sizeof(x)/sizeof(x[0])
   52 /* don't define if libkern included */
   53 #ifndef LIBKERN_INLINE
   54 #define max(a,b)        (((a)>(b))? (a) : (b))
   55 #define min(a,b)        (((a)>(b))? (b) : (a))
   56 #endif
   57 
   58 /*
   59  * This structure is used to define file system operations in a file system
   60  * independent way.
   61  */
   62 struct fs_ops {
   63         int     (*open)(char *path, struct open_file *f);
   64         int     (*close)(struct open_file *f);
   65         int     (*read)(struct open_file *f, void *buf,
   66                     size_t size, size_t *resid);
   67         int     (*write)(struct open_file *f, void *buf,
   68                     size_t size, size_t *resid);
   69         off_t   (*seek)(struct open_file *f, off_t offset, int where);
   70         int     (*stat)(struct open_file *f, struct stat *sb);
   71         int     (*readdir)(struct open_file *f, char *);
   72 };
   73 
   74 extern struct fs_ops file_system[];
   75 extern int nfsys;
   76 
   77 /* where values for lseek(2) */
   78 #define SEEK_SET        0       /* set file offset to offset */
   79 #define SEEK_CUR        1       /* set file offset to current plus offset */
   80 #define SEEK_END        2       /* set file offset to EOF plus offset */
   81 
   82 /* Device switch */
   83 struct devsw {
   84         char    *dv_name;
   85         int     (*dv_strategy)(void *devdata, int rw,
   86                                     daddr_t blk, size_t size,
   87                                     void *buf, size_t *rsize);
   88         int     (*dv_open)(struct open_file *f, ...);
   89         int     (*dv_close)(struct open_file *f);
   90         int     (*dv_ioctl)(struct open_file *f, u_long cmd, void *data);
   91 };
   92 
   93 extern struct devsw devsw[];    /* device array */
   94 extern int ndevs;               /* number of elements in devsw[] */
   95 
   96 extern struct consdev constab[];
   97 extern struct consdev *cn_tab;
   98 
   99 struct open_file {
  100         int             f_flags;        /* see F_* below */
  101         struct devsw    *f_dev;         /* pointer to device operations */
  102         void            *f_devdata;     /* device specific data */
  103         struct fs_ops   *f_ops;         /* pointer to file system operations */
  104         void            *f_fsdata;      /* file system specific data */
  105         off_t           f_offset;       /* current file offset (F_RAW) */
  106 };
  107 
  108 #define SOPEN_MAX       4
  109 extern struct open_file files[];
  110 
  111 /* f_flags values */
  112 #define F_READ          0x0001  /* file opened for reading */
  113 #define F_WRITE         0x0002  /* file opened for writing */
  114 #define F_RAW           0x0004  /* raw device open - no file system */
  115 #define F_NODEV         0x0008  /* network open - no device */
  116 
  117 #define isupper(c)      ((c) >= 'A' && (c) <= 'Z')
  118 #define islower(c)      ((c) >= 'a' && (c) <= 'z')
  119 #define isalpha(c)      (isupper(c)||islower(c))
  120 #define tolower(c)      (isupper(c)?((c) - 'A' + 'a'):(c))
  121 #define toupper(c)      (islower(c)?((c) - 'a' + 'A'):(c))
  122 #define isspace(c)      ((c) == ' ' || (c) == '\t')
  123 #define isdigit(c)      ((c) >= '0' && (c) <= '9')
  124 
  125 #define btochs(b,c,h,s,nh,ns)                   \
  126         c = (b) / ((nh) * (ns));                \
  127         h = ((b) % ((nh) * (ns))) / (ns);       \
  128         s = ((b) % ((nh) * (ns))) % (ns);
  129 
  130 void    *alloc(u_int);
  131 void    *alloca(size_t);
  132 void    free(void *, u_int);
  133 struct  disklabel;
  134 char    *getdisklabel(const char *, struct disklabel *);
  135 u_int   dkcksum(struct disklabel *);
  136 
  137 void    printf(const char *, ...);
  138 int     snprintf(char *, size_t, const char *, ...);
  139 void    vprintf(const char *, __va_list);
  140 void    twiddle(void);
  141 void    gets(char *);
  142 __dead void     panic(const char *, ...) __attribute__((noreturn));
  143 __dead void     _rtt(void) __attribute__((noreturn));
  144 #define bzero(s,n)      ((void)memset((s),0,(n)))
  145 #define bcmp(s1,s2,n)   (memcmp((s2),(s1),(n)))
  146 #define bcopy(s1,s2,n)  ((void)memcpy((s2),(s1),(n)))
  147 void    *memcpy(void *, const void *, size_t);
  148 int     memcmp(const void *, const void *, size_t);
  149 char    *strncpy(char *, const char *, size_t);
  150 int     strncmp(const char *, const char *, size_t);
  151 int     strcmp(const char *, const char *);
  152 size_t  strlen(const char *);
  153 long    strtol(const char *, char **, int);
  154 long long       strtoll(const char *, char **, int);
  155 char    *strchr(const char *, int);
  156 void    *memset(void *, int, size_t);
  157 void    exec(char *, void *, int);
  158 void    exit(void);
  159 int     open(const char *, int);
  160 int     close(int);
  161 void    closeall(void);
  162 ssize_t read(int, void *, size_t);
  163 ssize_t write(int, void *, size_t);
  164 int     stat(const char *path, struct stat *sb);
  165 int     fstat(int fd, struct stat *sb);
  166 int     opendir(char *);
  167 int     readdir(int, char *);
  168 void    closedir(int);
  169 int     nodev(void);
  170 int     noioctl(struct open_file *, u_long, void *);
  171 void    nullsys(void);
  172 
  173 int     null_open(char *path, struct open_file *f);
  174 int     null_close(struct open_file *f);
  175 ssize_t null_read(struct open_file *f, void *buf,
  176                         size_t size, size_t *resid);
  177 ssize_t null_write(struct open_file *f, void *buf,
  178                         size_t size, size_t *resid);
  179 off_t   null_seek(struct open_file *f, off_t offset, int where);
  180 int     null_stat(struct open_file *f, struct stat *sb);
  181 int     null_readdir(struct open_file *f, char *name);
  182 char    *ttyname(int); /* match userland decl, but ignore !0 */
  183 dev_t   ttydev(char *);
  184 void    cninit(void);
  185 int     cnset(dev_t);
  186 void    cnputc(int);
  187 int     cngetc(void);
  188 int     cnischar(void);
  189 int     cnspeed(dev_t, int);
  190 u_int   sleep(u_int);
  191 void    usleep(u_int);
  192 char *ctime(const time_t *);
  193 
  194 int     ioctl(int, u_long, char *);
  195 
  196 void    putchar(int);
  197 int     getchar(void);
  198 
  199 #ifdef __INTERNAL_LIBSA_CREAD
  200 int     oopen(const char *, int);
  201 int     oclose(int);
  202 ssize_t oread(int, void *, size_t);
  203 off_t   olseek(int, off_t, int);
  204 #endif
  205 
  206 /* Machine dependent functions */
  207 int     devopen(struct open_file *, const char *, char **);
  208 void    machdep_start(char *, int, char *, char *, char *);
  209 time_t  getsecs(void);
  210 

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