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    Contents of /trunk/mkinitrd-magellan/klibc/usr/utils/mknod.c

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    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
    File MIME type: text/plain
    File size: 1004 byte(s) 
    -import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
    1 #include <stdio.h>
    2 #include <stdlib.h>
    3 #include <sys/stat.h>
    4
    5 char *progname;
    6
    7 static __noreturn usage(void)
    8 {
    9 fprintf(stderr, "Usage: %s name {b|c|p} major minor\n", progname);
    10 exit(1);
    11 }
    12
    13 int main(int argc, char *argv[])
    14 {
    15 char *name, *type, typec, *endp;
    16 unsigned int major, minor;
    17 mode_t mode;
    18 dev_t dev;
    19
    20 progname = *argv++;
    21
    22 name = *argv++;
    23 if (!name)
    24 usage();
    25
    26 type = *argv++;
    27 if (!type || !type[0] || type[1])
    28 usage();
    29 typec = type[0];
    30
    31 mode = 0;
    32 switch (type[0]) {
    33 case 'c':
    34 mode = S_IFCHR;
    35 break;
    36 case 'b':
    37 mode = S_IFBLK;
    38 break;
    39 case 'p':
    40 mode = S_IFIFO;
    41 break;
    42 default:
    43 usage();
    44 }
    45
    46 if (mode == S_IFIFO) {
    47 dev = 0;
    48 } else {
    49 if (!argv[0] || !argv[1])
    50 usage();
    51
    52 major = strtol(*argv++, &endp, 0);
    53 if (*endp != '\0')
    54 usage();
    55 minor = strtol(*argv++, &endp, 0);
    56 if (*endp != '\0')
    57 usage();
    58 dev = makedev(major, minor);
    59 }
    60
    61 if (*argv)
    62 usage();
    63
    64 if (mknod(name, mode|0666, dev) == -1) {
    65 perror("mknod");
    66 exit(1);
    67 }
    68
    69 exit(0);
    70 }