db/command.c

   1 /*
   2  * Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write the Free Software Foundation, Inc., 59
  21  * Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
  31  */
  32
  33 #include <xfs/libxfs.h>
  34 #include "addr.h"
  35 #include "attrset.h"
  36 #include "block.h"
  37 #include "bmap.h"
  38 #include "check.h"
  39 #include "command.h"
  40 #include "convert.h"
  41 #include "debug.h"
  42 #include "type.h"
  43 #include "echo.h"
  44 #include "faddr.h"
  45 #include "fprint.h"
  46 #include "field.h"
  47 #include "agf.h"
  48 #include "agfl.h"
  49 #include "agi.h"
  50 #include "frag.h"
  51 #include "freesp.h"
  52 #include "help.h"
  53 #include "hash.h"
  54 #include "inode.h"
  55 #include "input.h"
  56 #include "io.h"
  57 #include "output.h"
  58 #include "print.h"
  59 #include "quit.h"
  60 #include "sb.h"
  61 #include "write.h"
  62 #include "malloc.h"
  63 #include "dquot.h"
  64
  65 cmdinfo_t       *cmdtab;
  66 int             ncmds;
  67
  68 static int
  69 cmd_compare(const void *a, const void *b)
  70 {
  71         return strcmp(((const cmdinfo_t *)a)->name,
  72                       ((const cmdinfo_t *)b)->name);
  73 }
  74
  75 void
  76 add_command(
  77         const cmdinfo_t *ci)
  78 {
  79         cmdtab = xrealloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab));
  80         cmdtab[ncmds - 1] = *ci;
  81         qsort(cmdtab, ncmds, sizeof(*cmdtab), cmd_compare);
  82 }
  83
  84 int
  85 command(
  86         int             argc,
  87         char            **argv)
  88 {
  89         char            *cmd;
  90         const cmdinfo_t *ct;
  91
  92         cmd = argv[0];
  93         ct = find_command(cmd);
  94         if (ct == NULL) {
  95                 dbprintf("command %s not found\n", cmd);
  96                 return 0;
  97         }
  98         if (argc-1 < ct->argmin || (ct->argmax != -1 && argc-1 > ct->argmax)) {
  99                 dbprintf("bad argument count %d to %s, expected ", argc-1, cmd);
 100                 if (ct->argmax == -1)
 101                         dbprintf("at least %d", ct->argmin);
 102                 else if (ct->argmin == ct->argmax)
 103                         dbprintf("%d", ct->argmin);
 104                 else
 105                         dbprintf("between %d and %d", ct->argmin, ct->argmax);
 106                 dbprintf(" arguments\n");
 107                 return 0;
 108         }
 109         platform_getoptreset();
 110         return ct->cfunc(argc, argv);
 111 }
 112
 113 const cmdinfo_t *
 114 find_command(
 115         const char      *cmd)
 116 {
 117         cmdinfo_t       *ct;
 118
 119         for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
 120                 if (strcmp(ct->name, cmd) == 0 ||
 121                     (ct->altname && strcmp(ct->altname, cmd) == 0))
 122                         return (const cmdinfo_t *)ct;
 123         }
 124         return NULL;
 125 }
 126
 127 void
 128 init_commands(void)
 129 {
 130         addr_init();
 131         agf_init();
 132         agfl_init();
 133         agi_init();
 134         attrset_init();
 135         block_init();
 136         bmap_init();
 137         check_init();
 138         convert_init();
 139         debug_init();
 140         echo_init();
 141         frag_init();
 142         freesp_init();
 143         help_init();
 144         hash_init();
 145         inode_init();
 146         input_init();
 147         io_init();
 148         output_init();
 149         print_init();
 150         quit_init();
 151         sb_init();
 152         type_init();
 153         write_init();
 154         dquot_init();
 155 }