disk-utils/mkfs.c

   1 /*
   2  * mkfs         A simple generic frontend for the for the mkfs program
   3  *              under Linux.  See the manual page for details.
   4  *
   5  * Authors:     David Engel, <david@ods.com>
   6  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
   7  *              Ron Sommeling, <sommel@sci.kun.nl>
   8  *
   9  * Mon Jul  1 18:52:58 1996: janl@math.uio.no (Nicolai Langfeldt):
  10  *      Incorporated fix by Jonathan Kamens <jik@annex-1-slip-jik.cam.ov.com>
  11  * 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL>
  12  * - added Native Language Support
  13  *
  14  */
  15
  16 #include <getopt.h>
  17 #include <limits.h>
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <unistd.h>
  22
  23 #include "c.h"
  24 #include "nls.h"
  25 #include "xalloc.h"
  26
  27 #ifndef DEFAULT_FSTYPE
  28 #define DEFAULT_FSTYPE  "ext2"
  29 #endif
  30
  31 #define SEARCH_PATH     "PATH=" FS_SEARCH_PATH
  32 #define PROGNAME        "mkfs.%s"
  33
  34
  35 static void __attribute__ ((__noreturn__)) usage(FILE * out)
  36 {
  37         fprintf(out,
  38                 _("Usage: %s [options] [-t type fs-options] device [size]\n"),
  39                 program_invocation_short_name);
  40
  41         fprintf(out, _("\nOptions:\n"
  42                        " -t, --type=TYPE  file system type, when undefined ext2 is used\n"
  43                        "     fs-options   parameters to real file system builder\n"
  44                        "     device       path to a device\n"
  45                        "     size         number of blocks on the device\n"
  46                        " -V, --verbose    explain what is done\n"
  47                        "                  defining -V more than once will cause a dry-run\n"
  48                        " -V, --version    output version information and exit\n"
  49                        "                  -V as version must be only option\n"
  50                        " -h, --help       display this help and exit\n"));
  51
  52         fprintf(out, _("\nFor more information see mkfs(8).\n"));
  53
  54         exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
  55 }
  56
  57 static void __attribute__ ((__noreturn__)) print_version(void)
  58 {
  59         printf(_("%s (%s)\n"),
  60                program_invocation_short_name, PACKAGE_STRING);
  61         exit(EXIT_SUCCESS);
  62 }
  63
  64 int main(int argc, char **argv)
  65 {
  66         char *progname;         /* name of executable to be called */
  67         char *fstype = NULL;
  68         int i, more = 0, verbose = 0;
  69         char *oldpath, *newpath;
  70
  71         enum { VERSION_OPTION = CHAR_MAX + 1 };
  72
  73         static const struct option longopts[] = {
  74                 {"type", required_argument, NULL, 't'},
  75                 {"version", no_argument, NULL, VERSION_OPTION},
  76                 {"help", no_argument, NULL, 'h'},
  77                 {NULL, 0, NULL, 0}
  78         };
  79
  80         setlocale(LC_ALL, "");
  81         bindtextdomain(PACKAGE, LOCALEDIR);
  82         textdomain(PACKAGE);
  83
  84         if (argc == 2 && !strcmp(argv[1], "-V"))
  85                 print_version();
  86
  87         /* Check commandline options. */
  88         opterr = 0;
  89         while ((more == 0)
  90                && ((i = getopt_long(argc, argv, "Vt:h", longopts, NULL))
  91                    != -1))
  92                 switch (i) {
  93                 case 'V':
  94                         verbose++;
  95                         break;
  96                 case 't':
  97                         fstype = optarg;
  98                         break;
  99                 case 'h':
 100                         usage(stdout);
 101                 case VERSION_OPTION:
 102                         print_version();
 103                 default:
 104                         optind--;
 105                         more = 1;
 106                         break;  /* start of specific arguments */
 107                 }
 108         if (optind == argc)
 109                 usage(stderr);
 110
 111         /* If -t wasn't specified, use the default */
 112         if (fstype == NULL)
 113                 fstype = DEFAULT_FSTYPE;
 114
 115         /* Set PATH and program name */
 116         oldpath = getenv("PATH");
 117         if (!oldpath)
 118                 oldpath = "/bin";
 119
 120         newpath = xmalloc(strlen(oldpath) + sizeof(SEARCH_PATH) + 3);
 121         sprintf(newpath, "%s:%s\n", SEARCH_PATH, oldpath);
 122         putenv(newpath);
 123
 124         progname = xmalloc(sizeof(PROGNAME) + strlen(fstype) + 1);
 125         sprintf(progname, PROGNAME, fstype);
 126         argv[--optind] = progname;
 127
 128         if (verbose) {
 129                 printf(_("mkfs (%s)\n"), PACKAGE_STRING);
 130                 i = optind;
 131                 while (argv[i])
 132                         printf("%s ", argv[i++]);
 133                 printf("\n");
 134                 if (verbose > 1)
 135                         return EXIT_SUCCESS;
 136         }
 137
 138         /* Execute the program */
 139         execvp(progname, argv + optind);
 140         perror(progname);
 141         return EXIT_FAILURE;
 142 }