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  * Usage:       mkfs [-V] [-t fstype] [fs-options] device [size]
   6  *
   7  * Authors:     David Engel, <david@ods.com>
   8  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
   9  *              Ron Sommeling, <sommel@sci.kun.nl>
  10  *
  11  * Mon Jul  1 18:52:58 1996: janl@math.uio.no (Nicolai Langfeldt):
  12  *      Incorporated fix by Jonathan Kamens <jik@annex-1-slip-jik.cam.ov.com>
  13  */
  14
  15
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #include <unistd.h>
  19 #include <string.h>
  20 #include <getopt.h>
  21 #include <limits.h>
  22
  23
  24 #define VERSION         "1.10"
  25
  26 #ifndef DEFAULT_FSTYPE
  27 # define DEFAULT_FSTYPE         "ext2"
  28 #endif
  29
  30 #define SEARCH_PATH     "PATH=/sbin:/sbin/fs:/sbin/fs.d:/etc/fs:/etc"
  31 #define PROGNAME        "mkfs.%s"
  32
  33
  34 int main(int argc, char *argv[])
  35 {
  36   char progname[NAME_MAX];
  37   char *fstype = NULL;
  38   int i, more = 0, verbose = 0;
  39   char *oldpath, *newpath;
  40
  41   /* Check commandline options. */
  42   opterr = 0;
  43   while ((more == 0) && ((i = getopt(argc, argv, "Vt:")) != EOF))
  44     switch (i) {
  45     case 'V':
  46       verbose++;
  47       break;
  48     case 't':
  49       fstype = optarg;
  50       break;
  51     default:
  52       optind--;
  53       more = 1;
  54       break;            /* start of specific arguments */
  55     }
  56   if (optind == argc) {
  57     fprintf(stderr,
  58       "Usage: mkfs [-V] [-t fstype] [fs-options] device [size]\n");
  59     return -1;
  60   }
  61
  62   /* If -t wasn't specified, use the default */
  63   if (fstype == NULL)
  64     fstype = DEFAULT_FSTYPE;
  65
  66   /* Set PATH and program name */
  67   oldpath = getenv("PATH");
  68   if (!oldpath)
  69           oldpath = "/bin";
  70   newpath = (char *) malloc(strlen(oldpath) + sizeof(SEARCH_PATH) + 2);
  71   if (!newpath) {
  72     fputs("mkfs: out of memory\n", stderr);
  73     exit(1);
  74   }
  75   sprintf(newpath, "%s:%s\n", SEARCH_PATH, oldpath);
  76   putenv(newpath);
  77   sprintf(progname, PROGNAME, fstype);
  78   argv[--optind] = progname;
  79
  80   if (verbose) {
  81     puts("mkfs version " VERSION " (" __DATE__ ")");
  82     i = optind;
  83     while (argv[i])
  84       printf("%s ", argv[i++]);
  85     printf("\n");
  86     if (verbose > 1)
  87       return 0;
  88   }
  89
  90   /* Execute the program */
  91   execvp(progname, argv+optind);
  92   perror(progname);
  93   return 1;
  94 }