ash.c

shell-HHARM9200.rar 华恒 AT91rm9200 中Busybox shell的源代码

	/*   2  -128 0x80 */ CWORD_CWORD_CWORD_CWORD,
	/*   3  -127 CTLESC       */ CCTL_CCTL_CCTL_CCTL,
	/*   4  -126 CTLVAR       */ CCTL_CCTL_CCTL_CCTL,
	/*   5  -125 CTLENDVAR    */ CCTL_CCTL_CCTL_CCTL,
	/*   6  -124 CTLBACKQ     */ CCTL_CCTL_CCTL_CCTL,
	/*   7  -123 CTLQUOTE     */ CCTL_CCTL_CCTL_CCTL,
	/*   8  -122 CTLARI       */ CCTL_CCTL_CCTL_CCTL,
	/*   9  -121 CTLENDARI    */ CCTL_CCTL_CCTL_CCTL,
	/*  10  -120 CTLQUOTEMARK */ CCTL_CCTL_CCTL_CCTL,
	/*  11  -119      */ CWORD_CWORD_CWORD_CWORD,
	/*  12  -118      */ CWORD_CWORD_CWORD_CWORD,
	/*  13  -117      */ CWORD_CWORD_CWORD_CWORD,
	/*  14  -116      */ CWORD_CWORD_CWORD_CWORD,
	/*  15  -115      */ CWORD_CWORD_CWORD_CWORD,
	/*  16  -114      */ CWORD_CWORD_CWORD_CWORD,
	/*  17  -113      */ CWORD_CWORD_CWORD_CWORD,
	/*  18  -112      */ CWORD_CWORD_CWORD_CWORD,
	/*  19  -111      */ CWORD_CWORD_CWORD_CWORD,
	/*  20  -110      */ CWORD_CWORD_CWORD_CWORD,
	/*  21  -109      */ CWORD_CWORD_CWORD_CWORD,
	/*  22  -108      */ CWORD_CWORD_CWORD_CWORD,
	/*  23  -107      */ CWORD_CWORD_CWORD_CWORD,
	/*  24  -106      */ CWORD_CWORD_CWORD_CWORD,
	/*  25  -105      */ CWORD_CWORD_CWORD_CWORD,
	/*  26  -104      */ CWORD_CWORD_CWORD_CWORD,
	/*  27  -103      */ CWORD_CWORD_CWORD_CWORD,
	/*  28  -102      */ CWORD_CWORD_CWORD_CWORD,
	/*  29  -101      */ CWORD_CWORD_CWORD_CWORD,
	/*  30  -100      */ CWORD_CWORD_CWORD_CWORD,
	/*  31   -99      */ CWORD_CWORD_CWORD_CWORD,
	/*  32   -98      */ CWORD_CWORD_CWORD_CWORD,
	/*  33   -97      */ CWORD_CWORD_CWORD_CWORD,
	/*  34   -96      */ CWORD_CWORD_CWORD_CWORD,
	/*  35   -95      */ CWORD_CWORD_CWORD_CWORD,
	/*  36   -94      */ CWORD_CWORD_CWORD_CWORD,
	/*  37   -93      */ CWORD_CWORD_CWORD_CWORD,
	/*  38   -92      */ CWORD_CWORD_CWORD_CWORD,
	/*  39   -91      */ CWORD_CWORD_CWORD_CWORD,
	/*  40   -90      */ CWORD_CWORD_CWORD_CWORD,
	/*  41   -89      */ CWORD_CWORD_CWORD_CWORD,
	/*  42   -88      */ CWORD_CWORD_CWORD_CWORD,
	/*  43   -87      */ CWORD_CWORD_CWORD_CWORD,
	/*  44   -86      */ CWORD_CWORD_CWORD_CWORD,
	/*  45   -85      */ CWORD_CWORD_CWORD_CWORD,
	/*  46   -84      */ CWORD_CWORD_CWORD_CWORD,
	/*  47   -83      */ CWORD_CWORD_CWORD_CWORD,
	/*  48   -82      */ CWORD_CWORD_CWORD_CWORD,
	/*  49   -81      */ CWORD_CWORD_CWORD_CWORD,
	/*  50   -80      */ CWORD_CWORD_CWORD_CWORD,
	/*  51   -79      */ CWORD_CWORD_CWORD_CWORD,
	/*  52   -78      */ CWORD_CWORD_CWORD_CWORD,
	/*  53   -77      */ CWORD_CWORD_CWORD_CWORD,
	/*  54   -76      */ CWORD_CWORD_CWORD_CWORD,
	/*  55   -75      */ CWORD_CWORD_CWORD_CWORD,
	/*  56   -74      */ CWORD_CWORD_CWORD_CWORD,
	/*  57   -73      */ CWORD_CWORD_CWORD_CWORD,
	/*  58   -72      */ CWORD_CWORD_CWORD_CWORD,
	/*  59   -71      */ CWORD_CWORD_CWORD_CWORD,
	/*  60   -70      */ CWORD_CWORD_CWORD_CWORD,
	/*  61   -69      */ CWORD_CWORD_CWORD_CWORD,
	/*  62   -68      */ CWORD_CWORD_CWORD_CWORD,
	/*  63   -67      */ CWORD_CWORD_CWORD_CWORD,
	/*  64   -66      */ CWORD_CWORD_CWORD_CWORD,
	/*  65   -65      */ CWORD_CWORD_CWORD_CWORD,
	/*  66   -64      */ CWORD_CWORD_CWORD_CWORD,
	/*  67   -63      */ CWORD_CWORD_CWORD_CWORD,
	/*  68   -62      */ CWORD_CWORD_CWORD_CWORD,
	/*  69   -61      */ CWORD_CWORD_CWORD_CWORD,
	/*  70   -60      */ CWORD_CWORD_CWORD_CWORD,
	/*  71   -59      */ CWORD_CWORD_CWORD_CWORD,
	/*  72   -58      */ CWORD_CWORD_CWORD_CWORD,
	/*  73   -57      */ CWORD_CWORD_CWORD_CWORD,
	/*  74   -56      */ CWORD_CWORD_CWORD_CWORD,
	/*  75   -55      */ CWORD_CWORD_CWORD_CWORD,
	/*  76   -54      */ CWORD_CWORD_CWORD_CWORD,
	/*  77   -53      */ CWORD_CWORD_CWORD_CWORD,
	/*  78   -52      */ CWORD_CWORD_CWORD_CWORD,
	/*  79   -51      */ CWORD_CWORD_CWORD_CWORD,
	/*  80   -50      */ CWORD_CWORD_CWORD_CWORD,
	/*  81   -49      */ CWORD_CWORD_CWORD_CWORD,
	/*  82   -48      */ CWORD_CWORD_CWORD_CWORD,
	/*  83   -47      */ CWORD_CWORD_CWORD_CWORD,
	/*  84   -46      */ CWORD_CWORD_CWORD_CWORD,
	/*  85   -45      */ CWORD_CWORD_CWORD_CWORD,
	/*  86   -44      */ CWORD_CWORD_CWORD_CWORD,
	/*  87   -43      */ CWORD_CWORD_CWORD_CWORD,
	/*  88   -42      */ CWORD_CWORD_CWORD_CWORD,
	/*  89   -41      */ CWORD_CWORD_CWORD_CWORD,
	/*  90   -40      */ CWORD_CWORD_CWORD_CWORD,
	/*  91   -39      */ CWORD_CWORD_CWORD_CWORD,
	/*  92   -38      */ CWORD_CWORD_CWORD_CWORD,
	/*  93   -37      */ CWORD_CWORD_CWORD_CWORD,
	/*  94   -36      */ CWORD_CWORD_CWORD_CWORD,
	/*  95   -35      */ CWORD_CWORD_CWORD_CWORD,
	/*  96   -34      */ CWORD_CWORD_CWORD_CWORD,
	/*  97   -33      */ CWORD_CWORD_CWORD_CWORD,
	/*  98   -32      */ CWORD_CWORD_CWORD_CWORD,
	/*  99   -31      */ CWORD_CWORD_CWORD_CWORD,
	/* 100   -30      */ CWORD_CWORD_CWORD_CWORD,
	/* 101   -29      */ CWORD_CWORD_CWORD_CWORD,
	/* 102   -28      */ CWORD_CWORD_CWORD_CWORD,
	/* 103   -27      */ CWORD_CWORD_CWORD_CWORD,
	/* 104   -26      */ CWORD_CWORD_CWORD_CWORD,
	/* 105   -25      */ CWORD_CWORD_CWORD_CWORD,
	/* 106   -24      */ CWORD_CWORD_CWORD_CWORD,
	/* 107   -23      */ CWORD_CWORD_CWORD_CWORD,
	/* 108   -22      */ CWORD_CWORD_CWORD_CWORD,
	/* 109   -21      */ CWORD_CWORD_CWORD_CWORD,
	/* 110   -20      */ CWORD_CWORD_CWORD_CWORD,
	/* 111   -19      */ CWORD_CWORD_CWORD_CWORD,
	/* 112   -18      */ CWORD_CWORD_CWORD_CWORD,
	/* 113   -17      */ CWORD_CWORD_CWORD_CWORD,
	/* 114   -16      */ CWORD_CWORD_CWORD_CWORD,
	/* 115   -15      */ CWORD_CWORD_CWORD_CWORD,
	/* 116   -14      */ CWORD_CWORD_CWORD_CWORD,
	/* 117   -13      */ CWORD_CWORD_CWORD_CWORD,
	/* 118   -12      */ CWORD_CWORD_CWORD_CWORD,
	/* 119   -11      */ CWORD_CWORD_CWORD_CWORD,
	/* 120   -10      */ CWORD_CWORD_CWORD_CWORD,
	/* 121    -9      */ CWORD_CWORD_CWORD_CWORD,
	/* 122    -8      */ CWORD_CWORD_CWORD_CWORD,
	/* 123    -7      */ CWORD_CWORD_CWORD_CWORD,
	/* 124    -6      */ CWORD_CWORD_CWORD_CWORD,
	/* 125    -5      */ CWORD_CWORD_CWORD_CWORD,
	/* 126    -4      */ CWORD_CWORD_CWORD_CWORD,
	/* 127    -3      */ CWORD_CWORD_CWORD_CWORD,
	/* 128    -2      */ CWORD_CWORD_CWORD_CWORD,
	/* 129    -1      */ CWORD_CWORD_CWORD_CWORD,
	/* 130     0      */ CWORD_CWORD_CWORD_CWORD,
	/* 131     1      */ CWORD_CWORD_CWORD_CWORD,
	/* 132     2      */ CWORD_CWORD_CWORD_CWORD,
	/* 133     3      */ CWORD_CWORD_CWORD_CWORD,
	/* 134     4      */ CWORD_CWORD_CWORD_CWORD,
	/* 135     5      */ CWORD_CWORD_CWORD_CWORD,
	/* 136     6      */ CWORD_CWORD_CWORD_CWORD,
	/* 137     7      */ CWORD_CWORD_CWORD_CWORD,
	/* 138     8      */ CWORD_CWORD_CWORD_CWORD,
	/* 139     9 "\t" */ CSPCL_CWORD_CWORD_CWORD,
	/* 140    10 "\n" */ CNL_CNL_CNL_CNL,
	/* 141    11      */ CWORD_CWORD_CWORD_CWORD,
	/* 142    12      */ CWORD_CWORD_CWORD_CWORD,
	/* 143    13      */ CWORD_CWORD_CWORD_CWORD,
	/* 144    14      */ CWORD_CWORD_CWORD_CWORD,
	/* 145    15      */ CWORD_CWORD_CWORD_CWORD,
	/* 146    16      */ CWORD_CWORD_CWORD_CWORD,
	/* 147    17      */ CWORD_CWORD_CWORD_CWORD,
	/* 148    18      */ CWORD_CWORD_CWORD_CWORD,
	/* 149    19      */ CWORD_CWORD_CWORD_CWORD,
	/* 150    20      */ CWORD_CWORD_CWORD_CWORD,
	/* 151    21      */ CWORD_CWORD_CWORD_CWORD,
	/* 152    22      */ CWORD_CWORD_CWORD_CWORD,
	/* 153    23      */ CWORD_CWORD_CWORD_CWORD,
	/* 154    24      */ CWORD_CWORD_CWORD_CWORD,
	/* 155    25      */ CWORD_CWORD_CWORD_CWORD,
	/* 156    26      */ CWORD_CWORD_CWORD_CWORD,
	/* 157    27      */ CWORD_CWORD_CWORD_CWORD,
	/* 158    28      */ CWORD_CWORD_CWORD_CWORD,
	/* 159    29      */ CWORD_CWORD_CWORD_CWORD,
	/* 160    30      */ CWORD_CWORD_CWORD_CWORD,
	/* 161    31      */ CWORD_CWORD_CWORD_CWORD,
	/* 162    32  " " */ CSPCL_CWORD_CWORD_CWORD,
	/* 163    33  "!" */ CWORD_CCTL_CCTL_CWORD,
	/* 164    34  """ */ CDQUOTE_CENDQUOTE_CWORD_CWORD,
	/* 165    35  "#" */ CWORD_CWORD_CWORD_CWORD,
	/* 166    36  "$" */ CVAR_CVAR_CWORD_CVAR,
	/* 167    37  "%" */ CWORD_CWORD_CWORD_CWORD,
	/* 168    38  "&" */ CSPCL_CWORD_CWORD_CWORD,
	/* 169    39  "'" */ CSQUOTE_CWORD_CENDQUOTE_CWORD,
	/* 170    40  "(" */ CSPCL_CWORD_CWORD_CLP,
	/* 171    41  ")" */ CSPCL_CWORD_CWORD_CRP,
	/* 172    42  "*" */ CWORD_CCTL_CCTL_CWORD,
	/* 173    43  "+" */ CWORD_CWORD_CWORD_CWORD,
	/* 174    44  "," */ CWORD_CWORD_CWORD_CWORD,
	/* 175    45  "-" */ CWORD_CCTL_CCTL_CWORD,
	/* 176    46  "." */ CWORD_CWORD_CWORD_CWORD,
	/* 177    47  "/" */ CWORD_CCTL_CCTL_CWORD,
	/* 178    48  "0" */ CWORD_CWORD_CWORD_CWORD,
	/* 179    49  "1" */ CWORD_CWORD_CWORD_CWORD,
	/* 180    50  "2" */ CWORD_CWORD_CWORD_CWORD,
	/* 181    51  "3" */ CWORD_CWORD_CWORD_CWORD,
	/* 182    52  "4" */ CWORD_CWORD_CWORD_CWORD,
	/* 183    53  "5" */ CWORD_CWORD_CWORD_CWORD,
	/* 184    54  "6" */ CWORD_CWORD_CWORD_CWORD,
	/* 185    55  "7" */ CWORD_CWORD_CWORD_CWORD,
	/* 186    56  "8" */ CWORD_CWORD_CWORD_CWORD,
	/* 187    57  "9" */ CWORD_CWORD_CWORD_CWORD,
	/* 188    58  ":" */ CWORD_CCTL_CCTL_CWORD,
	/* 189    59  ";" */ CSPCL_CWORD_CWORD_CWORD,
	/* 190    60  "<" */ CSPCL_CWORD_CWORD_CWORD,
	/* 191    61  "=" */ CWORD_CCTL_CCTL_CWORD,
	/* 192    62  ">" */ CSPCL_CWORD_CWORD_CWORD,
	/* 193    63  "?" */ CWORD_CCTL_CCTL_CWORD,
	/* 194    64  "@" */ CWORD_CWORD_CWORD_CWORD,
	/* 195    65  "A" */ CWORD_CWORD_CWORD_CWORD,
	/* 196    66  "B" */ CWORD_CWORD_CWORD_CWORD,
	/* 197    67  "C" */ CWORD_CWORD_CWORD_CWORD,
	/* 198    68  "D" */ CWORD_CWORD_CWORD_CWORD,
	/* 199    69  "E" */ CWORD_CWORD_CWORD_CWORD,
	/* 200    70  "F" */ CWORD_CWORD_CWORD_CWORD,
	/* 201    71  "G" */ CWORD_CWORD_CWORD_CWORD,
	/* 202    72  "H" */ CWORD_CWORD_CWORD_CWORD,
	/* 203    73  "I" */ CWORD_CWORD_CWORD_CWORD,
	/* 204    74  "J" */ CWORD_CWORD_CWORD_CWORD,
	/* 205    75  "K" */ CWORD_CWORD_CWORD_CWORD,
	/* 206    76  "L" */ CWORD_CWORD_CWORD_CWORD,
	/* 207    77  "M" */ CWORD_CWORD_CWORD_CWORD,
	/* 208    78  "N" */ CWORD_CWORD_CWORD_CWORD,
	/* 209    79  "O" */ CWORD_CWORD_CWORD_CWORD,
	/* 210    80  "P" */ CWORD_CWORD_CWORD_CWORD,
	/* 211    81  "Q" */ CWORD_CWORD_CWORD_CWORD,
	/* 212    82  "R" */ CWORD_CWORD_CWORD_CWORD,
	/* 213    83  "S" */ CWORD_CWORD_CWORD_CWORD,
	/* 214    84  "T" */ CWORD_CWORD_CWORD_CWORD,
	/* 215    85  "U" */ CWORD_CWORD_CWORD_CWORD,
	/* 216    86  "V" */ CWORD_CWORD_CWORD_CWORD,
	/* 217    87  "W" */ CWORD_CWORD_CWORD_CWORD,
	/* 218    88  "X" */ CWORD_CWORD_CWORD_CWORD,
	/* 219    89  "Y" */ CWORD_CWORD_CWORD_CWORD,
	/* 220    90  "Z" */ CWORD_CWORD_CWORD_CWORD,
	/* 221    91  "[" */ CWORD_CCTL_CCTL_CWORD,
	/* 222    92  "\" */ CBACK_CBACK_CCTL_CBACK,
	/* 223    93  "]" */ CWORD_CCTL_CCTL_CWORD,
	/* 224    94  "^" */ CWORD_CWORD_CWORD_CWORD,
	/* 225    95  "_" */ CWORD_CWORD_CWORD_CWORD,
	/* 226    96  "`" */ CBQUOTE_CBQUOTE_CWORD_CBQUOTE,
	/* 227    97  "a" */ CWORD_CWORD_CWORD_CWORD,
	/* 228    98  "b" */ CWORD_CWORD_CWORD_CWORD,
	/* 229    99  "c" */ CWORD_CWORD_CWORD_CWORD,
	/* 230   100  "d" */ CWORD_CWORD_CWORD_CWORD,
	/* 231   101  "e" */ CWORD_CWORD_CWORD_CWORD,
	/* 232   102  "f" */ CWORD_CWORD_CWORD_CWORD,
	/* 233   103  "g" */ CWORD_CWORD_CWORD_CWORD,
	/* 234   104  "h" */ CWORD_CWORD_CWORD_CWORD,
	/* 235   105  "i" */ CWORD_CWORD_CWORD_CWORD,
	/* 236   106  "j" */ CWORD_CWORD_CWORD_CWORD,
	/* 237   107  "k" */ CWORD_CWORD_CWORD_CWORD,
	/* 238   108  "l" */ CWORD_CWORD_CWORD_CWORD,
	/* 239   109  "m" */ CWORD_CWORD_CWORD_CWORD,
	/* 240   110  "n" */ CWORD_CWORD_CWORD_CWORD,
	/* 241   111  "o" */ CWORD_CWORD_CWORD_CWORD,
	/* 242   112  "p" */ CWORD_CWORD_CWORD_CWORD,
	/* 243   113  "q" */ CWORD_CWORD_CWORD_CWORD,
	/* 244   114  "r" */ CWORD_CWORD_CWORD_CWORD,
	/* 245   115  "s" */ CWORD_CWORD_CWORD_CWORD,
	/* 246   116  "t" */ CWORD_CWORD_CWORD_CWORD,
	/* 247   117  "u" */ CWORD_CWORD_CWORD_CWORD,
	/* 248   118  "v" */ CWORD_CWORD_CWORD_CWORD,
	/* 249   119  "w" */ CWORD_CWORD_CWORD_CWORD,
	/* 250   120  "x" */ CWORD_CWORD_CWORD_CWORD,
	/* 251   121  "y" */ CWORD_CWORD_CWORD_CWORD,
	/* 252   122  "z" */ CWORD_CWORD_CWORD_CWORD,
	/* 253   123  "{" */ CWORD_CWORD_CWORD_CWORD,
	/* 254   124  "|" */ CSPCL_CWORD_CWORD_CWORD,
	/* 255   125  "}" */ CENDVAR_CENDVAR_CWORD_CENDVAR,
	/* 256   126  "~" */ CWORD_CCTL_CCTL_CWORD,
	/* 257   127      */ CWORD_CWORD_CWORD_CWORD,
};

#endif                                                  /* USE_SIT_FUNCTION */

/*      $NetBSD: alias.c,v 1.11 2002/11/24 22:35:38 christos Exp $      */


#define ATABSIZE 39

static int     funcblocksize;          /* size of structures in function */
static int     funcstringsize;         /* size of strings in node */
static pointer funcblock;              /* block to allocate function from */
static char   *funcstring;             /* block to allocate strings from */

static const short nodesize[26] = {
      SHELL_ALIGN(sizeof (struct ncmd)),
      SHELL_ALIGN(sizeof (struct npipe)),
      SHELL_ALIGN(sizeof (struct nredir)),
      SHELL_ALIGN(sizeof (struct nredir)),
      SHELL_ALIGN(sizeof (struct nredir)),
      SHELL_ALIGN(sizeof (struct nbinary)),
      SHELL_ALIGN(sizeof (struct nbinary)),
      SHELL_ALIGN(sizeof (struct nbinary)),
      SHELL_ALIGN(sizeof (struct nif)),
      SHELL_ALIGN(sizeof (struct nbinary)),
      SHELL_ALIGN(sizeof (struct nbinary)),
      SHELL_ALIGN(sizeof (struct nfor)),
      SHELL_ALIGN(sizeof (struct ncase)),
      SHELL_ALIGN(sizeof (struct nclist)),
      SHELL_ALIGN(sizeof (struct narg)),
      SHELL_ALIGN(sizeof (struct narg)),
      SHELL_ALIGN(sizeof (struct nfile)),
      SHELL_ALIGN(sizeof (struct nfile)),
      SHELL_ALIGN(sizeof (struct nfile)),
      SHELL_ALIGN(sizeof (struct nfile)),
      SHELL_ALIGN(sizeof (struct nfile)),
      SHELL_ALIGN(sizeof (struct ndup)),
      SHELL_ALIGN(sizeof (struct ndup)),
      SHELL_ALIGN(sizeof (struct nhere)),
      SHELL_ALIGN(sizeof (struct nhere)),
      SHELL_ALIGN(sizeof (struct nnot)),
};


static void calcsize(union node *);
static void sizenodelist(struct nodelist *);
static union node *copynode(union node *);
static struct nodelist *copynodelist(struct nodelist *);
static char *nodesavestr(char *);



static void evalstring(char *);
union node;     /* BLETCH for ansi C */
static void evaltree(union node *, int);
static void evalbackcmd(union node *, struct backcmd *);

/* in_function returns nonzero if we are currently evaluating a function */
#define in_function()   funcnest
static int evalskip;                   /* set if we are skipping commands */
static int skipcount;           /* number of levels to skip */
static int funcnest;                   /* depth of function calls */

/* reasons for skipping commands (see comment on breakcmd routine) */
#define SKIPBREAK       1
#define SKIPCONT        2
#define SKIPFUNC        3
#define SKIPFILE        4

/*
 * This file was generated by the mkbuiltins program.
 */

#ifdef JOBS
static int bgcmd(int, char **);
#endif
static int breakcmd(int, char **);
static int cdcmd(int, char **);
#ifdef CONFIG_ASH_CMDCMD
static int commandcmd(int, char **);
#endif
static int dotcmd(int, char **);
static int evalcmd(int, char **);
static int execcmd(int, char **);
static int exitcmd(int, char **);
static int exportcmd(int, char **);
static int falsecmd(int, char **);
#ifdef JOBS
static int fgcmd(int, char **);
#endif
#ifdef CONFIG_ASH_GETOPTS
static int getoptscmd(int, char **);
#endif
static int hashcmd(int, char **);
#ifndef CONFIG_FEATURE_SH_EXTRA_QUIET
static int helpcmd(int argc, char **argv);
#endif
#ifdef JOBS
static int jobscmd(int, char **);
#endif
#ifdef CONFIG_ASH_MATH_SUPPORT
static int letcmd(int, char **);
#endif
static int localcmd(int, char **);
static int pwdcmd(int, char **);
static int readcmd(int, char **);
static int returncmd(int, char **);
static int setcmd(int, char **);
static int shiftcmd(int, char **);
static int timescmd(int, char **);
static int trapcmd(int, char **);
static int truecmd(int, char **);
static int typecmd(int, char **);
static int umaskcmd(int, char **);
static int unsetcmd(int, char **);
static int waitcmd(int, char **);
static int ulimitcmd(int, char **);
#ifdef JOBS
static int killcmd(int, char **);
#endif

/*      $NetBSD: mail.h,v 1.9 2002/11/24 22:35:40 christos Exp $        */

#ifdef CONFIG_ASH_MAIL
static void chkmail(void);
static void changemail(const char *);
#endif

/*      $NetBSD: exec.h,v 1.20 2003/01/22 20:36:04 dsl Exp $    */

/* values of cmdtype */
#define CMDUNKNOWN      -1      /* no entry in table for command */
#define CMDNORMAL       0       /* command is an executable program */
#define CMDFUNCTION     1       /* command is a shell function */
#define CMDBUILTIN      2       /* command is a shell builtin */

struct builtincmd {
	const char *name;
	int (*builtin)(int, char **);
	/* unsigned flags; */
};

#ifdef CONFIG_ASH_CMDCMD
# ifdef JOBS
#  ifdef CONFIG_ASH_ALIAS
#    define COMMANDCMD (builtincmd + 7)
#    define EXECCMD (builtincmd + 10)
#  else
#    define COMMANDCMD (builtincmd + 6)
#    define EXECCMD (builtincmd + 9)
#  endif
# else /* ! JOBS */
#  ifdef CONFIG_ASH_ALIAS
#    define COMMANDCMD (builtincmd + 6)
#    define EXECCMD (builtincmd + 9)
#  else
#    define COMMANDCMD (builtincmd + 5)
#    define EXECCMD (builtincmd + 8)
#  endif
# endif /* JOBS */
#else   /* ! CONFIG_ASH_CMDCMD */
# ifdef JOBS
#  ifdef CONFIG_ASH_ALIAS
#    define EXECCMD (builtincmd + 9)
#  else
#    define EXECCMD (builtincmd + 8)
#  endif
# else /* ! JOBS */
#  ifdef CONFIG_ASH_ALIAS
#    define EXECCMD (builtincmd + 8)
#  else
#    define EXECCMD (builtincmd + 7)
#  endif
# endif /* JOBS */
#endif /* CONFIG_ASH_CMDCMD */

#define BUILTIN_NOSPEC  "0"
#define BUILTIN_SPECIAL "1"
#define BUILTIN_REGULAR "2"
#define BUILTIN_SPEC_REG "3"
#define BUILTIN_ASSIGN  "4"
#define BUILTIN_SPEC_ASSG  "5"
#define BUILTIN_REG_ASSG   "6"
#define BUILTIN_SPEC_REG_ASSG   "7"

#define IS_BUILTIN_SPECIAL(builtincmd) ((builtincmd)->name[0] & 1)
#define IS_BUILTIN_REGULAR(builtincmd) ((builtincmd)->name[0] & 2)

static const struct builtincmd builtincmd[] = {
	{ BUILTIN_SPEC_REG      ".", dotcmd },
	{ BUILTIN_SPEC_REG      ":", truecmd },
#ifdef CONFIG_ASH_ALIAS
	{ BUILTIN_REG_ASSG      "alias", aliascmd },
#endif
#ifdef JOBS
	{ BUILTIN_REGULAR       "bg", bgcmd },
#endif
	{ BUILTIN_SPEC_REG      "break", breakcmd },
	{ BUILTIN_REGULAR       "cd", cdcmd },
	{ BUILTIN_NOSPEC        "chdir", cdcmd },