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 "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 "logformat.h"
  44 #include "metadump.h"
  45 #include "output.h"
  46 #include "print.h"
  47 #include "quit.h"
  48 #include "sb.h"
  49 #include "write.h"
  50 #include "malloc.h"
  51 #include "dquot.h"
  52 #include "fsmap.h"
  53 #include "crc.h"
  54 #include "fuzz.h"
  55
  56 cmdinfo_t       *cmdtab;
  57 int             ncmds;
  58
  59 static int
  60 cmd_compare(const void *a, const void *b)
  61 {
  62         return strcmp(((const cmdinfo_t *)a)->name,
  63                       ((const cmdinfo_t *)b)->name);
  64 }
  65
  66 void
  67 add_command(
  68         const cmdinfo_t *ci)
  69 {
  70         cmdtab = xrealloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab));
  71         cmdtab[ncmds - 1] = *ci;
  72         qsort(cmdtab, ncmds, sizeof(*cmdtab), cmd_compare);
  73 }
  74
  75 int
  76 command(
  77         int             argc,
  78         char            **argv)
  79 {
  80         char            *cmd;
  81         const cmdinfo_t *ct;
  82
  83         cmd = argv[0];
  84         ct = find_command(cmd);
  85         if (ct == NULL) {
  86                 dbprintf(_("command %s not found\n"), cmd);
  87                 return 0;
  88         }
  89         if (argc-1 < ct->argmin || (ct->argmax != -1 && argc-1 > ct->argmax)) {
  90                 dbprintf(_("bad argument count %d to %s, expected "), argc-1, cmd);
  91                 if (ct->argmax == -1)
  92                         dbprintf(_("at least %d"), ct->argmin);
  93                 else if (ct->argmin == ct->argmax)
  94                         dbprintf("%d", ct->argmin);
  95                 else
  96                         dbprintf(_("between %d and %d"), ct->argmin, ct->argmax);
  97                 dbprintf(_(" arguments\n"));
  98                 return 0;
  99         }
 100         platform_getoptreset();
 101         return ct->cfunc(argc, argv);
 102 }
 103
 104 const cmdinfo_t *
 105 find_command(
 106         const char      *cmd)
 107 {
 108         cmdinfo_t       *ct;
 109
 110         for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) {
 111                 if (strcmp(ct->name, cmd) == 0 ||
 112                     (ct->altname && strcmp(ct->altname, cmd) == 0))
 113                         return (const cmdinfo_t *)ct;
 114         }
 115         return NULL;
 116 }
 117
 118 void
 119 init_commands(void)
 120 {
 121         addr_init();
 122         agf_init();
 123         agfl_init();
 124         agi_init();
 125         attrset_init();
 126         block_init();
 127         bmap_init();
 128         btdump_init();
 129         check_init();
 130         convert_init();
 131         crc_init();
 132         debug_init();
 133         echo_init();
 134         frag_init();
 135         freesp_init();
 136         fsmap_init();
 137         help_init();
 138         hash_init();
 139         inode_init();
 140         input_init();
 141         logformat_init();
 142         io_init();
 143         metadump_init();
 144         output_init();
 145         print_init();
 146         quit_init();
 147         sb_init();
 148         type_init();
 149         write_init();
 150         dquot_init();
 151         fuzz_init();
 152 }