com32/rosh/rosh.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2008 Gene Cumm - All Rights Reserved
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   8  *   Boston MA 02111-1307, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 /*
  14  * rosh.h
  15  *
  16  * Read-Only shell; Header
  17  */
  18
  19 /*
  20  * History
  21  * b021 Move much PreProcessing stuff to rosh.h
  22  * b018 Create rosh_debug() macro
  23  * b012 Version of rosh.c at time of creating this file.
  24  */
  25
  26 #ifndef ROSH_H
  27 #define ROSH_H
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <stdbool.h>            /* macro: true false */
  32 #include <string.h>             /* strcpy() strlen() memcpy() strchr() */
  33 #include <sys/types.h>
  34 #include <sys/stat.h>           /* fstat() */
  35 #include <fcntl.h>              /* open(); open mode macros */
  36 #include <dirent.h>             /* fdopendir() opendir() readdir() closedir() DIR */
  37 #include <unistd.h>             /* getcwd() */
  38 #include <errno.h>              /* errno; error macros */
  39 #include <netinet/in.h>         /* For htonl/ntohl/htons/ntohs */
  40
  41 #include <getkey.h>
  42 #include <consoles.h>
  43
  44 /* A GNUC extension to void out unused functions are used */
  45 /*      Plus, there seem to be other references for SYSLINUX to __GNUC__ */
  46 #ifndef __GNUC__
  47 #error SYSLINUX (I believe) requires __GNUC__
  48 #endif /* __GNUC__ */
  49
  50 #ifdef DO_DEBUG
  51 #define ROSH_DEBUG(f, ...)      printf (f, ## __VA_ARGS__)
  52 #ifdef DO_DEBUG2
  53 #define ROSH_DEBUG2(f, ...)     printf (f, ## __VA_ARGS__)
  54 #else /* DO_DEBUG2 */
  55 #define ROSH_DEBUG2(f, ...)     ((void)0)
  56 #endif /* DO_DEBUG2 */
  57 #else /* DO_DEBUG */
  58 #define ROSH_DEBUG(f, ...)      ((void)0)
  59 #define ROSH_DEBUG2(f, ...)     ((void)0)
  60 #endif /* DO_DEBUG */
  61
  62 #ifdef __COM32__
  63 #define ROSH_IS_COM32   1
  64 #include <console.h>            /* openconsole() */
  65 #include <syslinux/config.h>    /* Has info on the SYSLINUX variant */
  66 #include <syslinux/boot.h>      /* syslinux_run_command() */
  67 #define ROSH_COM32(f, ...)      printf (f, ## __VA_ARGS__)
  68 #else
  69 #include <termios.h>
  70 #define ROSH_IS_COM32   0
  71 static inline char *syslinux_config_file()
  72 {
  73     return "";
  74 }
  75
  76 static inline int getscreensize(int fd, int *rows, int *cols)
  77 {
  78     char *str;
  79     int rv;
  80     *rows = 0;
  81     *cols = 0;
  82     if (rows) {
  83         str = getenv("LINES");
  84         if (str) {
  85             *rows = atoi(str);
  86         }
  87     }
  88     if (cols) {
  89         str = getenv("COLUMNS");
  90         if (str) {
  91             *cols = atoi(str);
  92         }
  93     }
  94     if (!rows || !cols)
  95         rv = -1;
  96     else if (!*rows || !*cols)
  97         rv = -2;
  98     else
  99         rv = 0;
 100     return rv;
 101 }
 102
 103 #define ROSH_COM32(f, ...)      ((void)0)
 104 #define syslinux_run_command(f) ((void)0)
 105 #endif /* __COM32__ */
 106
 107 #define SEP     '/'
 108
 109 /* Size of buffer string */
 110 #define ROSH_BUF_SZ     16384
 111 /* Size of screen output buffer (80*40) */
 112 #define ROSH_SBUF_SZ    1200
 113
 114 /* Size of command buffer string */
 115 #ifdef MAX_CMDLINE_LEN
 116 #define ROSH_CMD_SZ     MAX_CMDLINE_LEN
 117 #else
 118 #ifdef COMMAND_LINE_SIZE
 119 #define ROSH_CMD_SZ     COMMAND_LINE_SIZE
 120 #else
 121 #define ROSH_CMD_SZ     2048
 122 #endif /* COMMAND_LINE_SIZE */
 123 #endif /* MAX_CMDLINE_LEN */
 124
 125 /* Size of path buffer string */
 126 #ifdef PATH_MAX
 127 #define ROSH_PATH_SZ    PATH_MAX
 128 #elif NAME_MAX
 129 #define ROSH_PATH_SZ    NAME_MAX
 130 #else
 131 #define ROSH_PATH_SZ    255
 132 #endif /* NAME_MAX */
 133
 134 const char rosh_help_str1[] =
 135     "Commands: ? cat cd cfg dir exit help less ls man more pwd run quit ver";
 136
 137 const char rosh_help_str2[] =
 138     "Commands: (some 1-letter abreviations also allowed)\n\
 139   h     HELP\n     ALSO ? help man\n\
 140   cat   Concatenate file to console\n    cat <file>\n\
 141   cd    Change to directory <dir>\n    cd <dir>\n\
 142   less  Page a file with rewind\n\
 143   ls    List contents of current directory\n    ls <dir>\n\
 144     ALSO dir\n\
 145   more  Page a file\n\
 146   pwd   display Present Working Directory\n\
 147   run   Run a program/kernel with options\n\
 148   exit  Exit to previous environment\n    ALSO quit";
 149
 150 #endif /* Not ROSH_H */