db/command.c

   1 /*
   2  * Copyright (c) 2000-2005 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18
  19 #include <xfs/libxfs.h>
  20 #include "addr.h"
  21 #include "attrset.h"
  22 #include "block.h"
  23 #include "bmap.h"
  24 #include "check.h"
  25 #include "command.h"
  26 #include "convert.h"
  27 #include "debug.h"
  28 #include "type.h"
  29 #include "echo.h"
  30 #include "faddr.h"
  31 #include "fprint.h"
  32 #include "field.h"
  33 #include "agf.h"
  34 #include "agfl.h"
  35 #include "agi.h"
  36 #include "frag.h"
  37 #include "freesp.h"
  38 #include "help.h"
  39 #include "hash.h"
  40 #include "inode.h"
  41 #include "input.h"
  42 #include "io.h"
  43 #include "metadump.h"
  44 #include "output.h"
  45 #include "print.h"
  46 #include "quit.h"
  47 #include "sb.h"
  48 #include "write.h"
  49 #include "malloc.h"
  50 #include "dquot.h"
  51
  52 cmdinfo_t       *cmdtab;
  53 int             ncmds;
  54
  55 static int
  56 cmd_compare(const void *a, const void *b)
  57 {
  58         return strcmp(((const cmdinfo_t *)a)->name,
  59                       ((const cmdinfo_t *)b)->name);
  60 }
  61
  62 void
  63 add_command(
  64         const cmdinfo_t *ci)
  65 {
  66         cmdtab = xrealloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab));
  67         cmdtab[ncmds - 1] = *ci;
  68         qsort(cmdtab, ncmds, sizeof(*cmdtab), cmd_compare);
  69 }
  70
  71 int
  72 command(
  73         int             argc,
  74         char            **argv)
  75 {
  76         char            *cmd;
  77         const cmdinfo_t *ct;
  78
  79         cmd = argv[0];
  80         ct = find_command(cmd);
  81         if (ct == NULL) {
  82                 dbprintf(_("command %s not found\n"), cmd);
  83                 return 0;
  84         }
  85         if (argc-1 < ct->argmin || (ct->argmax != -1 && argc-1 > ct->argmax)) {
  86                 dbprintf(_("bad argument count %d to %s, expected "), argc-1, cmd);
  87                 if (ct->argmax == -1)
  88                         dbprintf(_("at least %d"), ct->argmin);
  89                 else if (ct->argmin == ct->argmax)
  90                         dbprintf("%d", ct->argmin);
  91                 else
  92                         dbprintf(_("between %d and %d"), ct->argmin, ct->argmax);
  93                 dbprintf(_(" arguments\n"));
  94                 return 0;
  95         }
  96         platform_getoptreset();
  97         return ct->cfunc(argc, argv);
  98 }
  99
 100 const cmdinfo_t *
 101 find_command(
 102         const char      *cmd)
 103 {
 104         cmdinfo_t       *ct;
 105
 106         for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
 107                 if (strcmp(ct->name, cmd) == 0 ||
 108                     (ct->altname && strcmp(ct->altname, cmd) == 0))
 109                         return (const cmdinfo_t *)ct;
 110         }
 111         return NULL;
 112 }
 113
 114 void
 115 init_commands(void)
 116 {
 117         addr_init();
 118         agf_init();
 119         agfl_init();
 120         agi_init();
 121         attrset_init();
 122         block_init();
 123         bmap_init();
 124         check_init();
 125         convert_init();
 126         debug_init();
 127         echo_init();
 128         frag_init();
 129         freesp_init();
 130         help_init();
 131         hash_init();
 132         inode_init();
 133         input_init();
 134         io_init();
 135         metadump_init();
 136         output_init();
 137         print_init();
 138         quit_init();
 139         sb_init();
 140         type_init();
 141         write_init();
 142         dquot_init();
 143 }