/* * Copyright (c) 1993 University of Utah. * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Utah $Hdr: vnconfig.c 1.1 93/12/15$ * * @(#)vnconfig.c 8.1 (Berkeley) 12/15/93 */ #include <sys/param.h> #include <sys/ioctl.h> #include <sys/mount.h> #include <sys/stat.h> #include <dev/vndioctl.h> #include <err.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #define VND_CONFIG 1 #define VND_UNCONFIG 2 int verbose = 0; char *rawdevice __P((char *)); void usage __P((void)); main(argc, argv) int argc; char **argv; { int ch, rv, action = VND_CONFIG; while ((ch = getopt(argc, argv, "cuv")) != -1) { switch (ch) { case 'c': action = VND_CONFIG; break; case 'u': action = VND_UNCONFIG; break; case 'v': verbose = 1; break; default: case '?': usage(); /* NOTREACHED */ } } argc -= optind; argv += optind; if (action == VND_CONFIG && argc == 2) rv = config(argv[0], argv[1], action); else if (action == VND_UNCONFIG && argc == 1) rv = config(argv[0], NULL, action); else usage(); exit(rv); } config(dev, file, action) char *dev; char *file; int action; { struct vnd_ioctl vndio; FILE *f; char *rdev; int rv; rdev = rawdevice(dev); f = fopen(rdev, "rw"); if (f == NULL) { warn(rdev); return (1); } vndio.vnd_file = file; /* * Clear (un-configure) the device */ if (action == VND_UNCONFIG) { rv = ioctl(fileno(f), VNDIOCCLR, &vndio); if (rv) warn("VNDIOCCLR"); else if (verbose) printf("%s: cleared\n", dev); } /* * Configure the device */ if (action == VND_CONFIG) { rv = ioctl(fileno(f), VNDIOCSET, &vndio); if (rv) warn("VNDIOCSET"); else if (verbose) printf("%s: %d bytes on %s\n", dev, vndio.vnd_size, file); } done: fclose(f); fflush(stdout); return (rv < 0); } char * rawdevice(dev) char *dev; { register char *rawbuf, *dp, *ep; struct stat sb; int len; len = strlen(dev); rawbuf = malloc(len + 2); strcpy(rawbuf, dev); if (stat(rawbuf, &sb) != 0 || !S_ISCHR(sb.st_mode)) { dp = rindex(rawbuf, '/'); if (dp) { for (ep = &rawbuf[len]; ep > dp; --ep) *(ep+1) = *ep; *++ep = 'r'; } } return (rawbuf); } void usage() { (void)fprintf(stderr, "%s%s", "usage: vnconfig -c [-v] special-file regular-file\n", " vnconfig -u [-v] special-file\n"); exit(1); }