io/init.c

   1 /*
   2  * Copyright (c) 2003 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 <libxfs.h>
  34 #include "input.h"
  35 #include "command.h"
  36
  37 int     fdesc;
  38 char    *fname;
  39 char    *progname;
  40 int     exitcode;
  41
  42 int     readonly;
  43 int     directio;
  44 int     realtime;
  45 int     append;
  46 int     osync;
  47 int     trunc;
  48
  49 static int      ncmdline;
  50 static char     **cmdline;
  51
  52 void
  53 usage(void)
  54 {
  55         fprintf(stderr,
  56                 _("Usage: %s [-r] [-p prog] [-c cmd]... file\n"), progname);
  57         exit(1);
  58 }
  59
  60 void
  61 init(
  62         int             argc,
  63         char            **argv)
  64 {
  65         int             fflag = 0;
  66         int             c;
  67
  68         progname = basename(argv[0]);
  69         setlocale(LC_ALL, "");
  70         bindtextdomain(PACKAGE, LOCALEDIR);
  71         textdomain(PACKAGE);
  72
  73         while ((c = getopt(argc, argv, "ac:dfp:rstVx")) != EOF) {
  74                 switch (c) {
  75                 case 'a':       /* append */
  76                         append = 1;
  77                         break;
  78                 case 'c':       /* commands */
  79                         ncmdline++;
  80                         cmdline = realloc(cmdline, sizeof(char*) * (ncmdline));
  81                         if (!cmdline) {
  82                                 perror("realloc");
  83                                 exit(1);
  84                         }
  85                         cmdline[ncmdline-1] = optarg;
  86                         break;
  87                 case 'd':       /* directIO */
  88                         directio = 1;
  89                         break;
  90                 case 'f':       /* create */
  91                         fflag = 1;
  92                         break;
  93                 case 'p':       /* progname */
  94                         progname = optarg;
  95                         break;
  96                 case 'r':       /* readonly */
  97                         readonly = 1;
  98                         break;
  99                 case 's':       /* sync */
 100                         osync = 1;
 101                         break;
 102                 case 't':       /* truncate */
 103                         trunc = 1;
 104                         break;
 105                 case 'x':       /* realtime */
 106                         realtime = 1;
 107                         break;
 108                 case 'V':
 109                         printf(_("%s version %s\n"), progname, VERSION);
 110                         exit(0);
 111                 default:
 112                         usage();
 113                 }
 114         }
 115
 116         if (optind != argc - 1)
 117                 usage();
 118
 119         fname = strdup(argv[optind]);
 120         if ((fdesc = openfile(fname, append, fflag, directio,
 121                                 readonly, osync, trunc, realtime)) < 0)
 122                 exit(1);
 123
 124         init_commands();
 125 }
 126
 127 int
 128 main(
 129         int     argc,
 130         char    **argv)
 131 {
 132         int     c, i, done = 0;
 133         char    *input;
 134         char    **v;
 135
 136         init(argc, argv);
 137
 138         for (i = 0; !done && i < ncmdline; i++) {
 139                 v = breakline(cmdline[i], &c);
 140                 if (c)
 141                         done = command(c, v);
 142                 free(v);
 143         }
 144         if (cmdline) {
 145                 free(cmdline);
 146                 return exitcode;
 147         }
 148         while (!done) {
 149                 if ((input = fetchline()) == NULL)
 150                         break;
 151                 v = breakline(input, &c);
 152                 if (c)
 153                         done = command(c, v);
 154                 doneline(input, v);
 155         }
 156         return exitcode;
 157 }