1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * All rights reserved. 5 * 6 * This code is derived from software donated to Berkeley by 7 * Jan-Simon Pendry. 8 * 9 * %sccs.include.redist.c% 10 * 11 * @(#)mount_null.c 8.1 (Berkeley) 06/05/93 12 */ 13 14 #include <sys/param.h> 15 #include <sys/mount.h> 16 #include <miscfs/nullfs/null.h> 17 18 #include <errno.h> 19 #include <stdio.h> 20 #include <unistd.h> 21 #include <stdlib.h> 22 #include <string.h> 23 24 void usage __P((void)); 25 26 int 27 main(argc, argv) 28 int argc; 29 char *argv[]; 30 { 31 struct null_args args; 32 int ch, mntflags; 33 34 mntflags = 0; 35 while ((ch = getopt(argc, argv, "F:")) != EOF) 36 switch(ch) { 37 case 'F': 38 mntflags = atoi(optarg); 39 break; 40 case '?': 41 default: 42 usage(); 43 } 44 argc -= optind; 45 argv += optind; 46 47 if (argc != 2) 48 usage(); 49 50 args.target = argv[0]; 51 52 if (mount(MOUNT_NULL, argv[1], mntflags, &args)) { 53 (void)fprintf(stderr, "mount_null: %s\n", strerror(errno)); 54 exit(1); 55 } 56 exit(0); 57 } 58 59 void 60 usage() 61 { 62 (void)fprintf(stderr, 63 "usage: mount_null [ -F fsoptions ] target_fs mount_point\n"); 64 exit(1); 65 } 66