620 lines
13 KiB
C
620 lines
13 KiB
C
/*
|
|
* 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 $Hdr: vnconfig.c 1.1 93/12/15$
|
|
*/
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)vnconfig.c 8.1 (Berkeley) 12/15/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <paths.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/linker.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/module.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/vnioctl.h>
|
|
#include <ufs/ufs/ufsmount.h>
|
|
|
|
#define MAXVNDISK 16
|
|
#define LINESIZE 1024
|
|
#define ZBUFSIZE 32768
|
|
|
|
struct vndisk {
|
|
char *dev;
|
|
char *file;
|
|
char *autolabel;
|
|
int flags;
|
|
int size;
|
|
char *oarg;
|
|
} vndisks[MAXVNDISK];
|
|
|
|
#define VN_CONFIG 0x01
|
|
#define VN_UNCONFIG 0x02
|
|
#define VN_ENABLE 0x04
|
|
#define VN_DISABLE 0x08
|
|
#define VN_SWAP 0x10
|
|
#define VN_MOUNTRO 0x20
|
|
#define VN_MOUNTRW 0x40
|
|
#define VN_IGNORE 0x80
|
|
#define VN_SET 0x100
|
|
#define VN_RESET 0x200
|
|
#define VN_TRUNCATE 0x400
|
|
#define VN_ZERO 0x800
|
|
|
|
int nvndisks;
|
|
|
|
int all = 0;
|
|
int verbose = 0;
|
|
int global = 0;
|
|
u_long setopt = 0;
|
|
u_long resetopt = 0;
|
|
char *configfile;
|
|
|
|
int config __P((struct vndisk *));
|
|
void getoptions __P((struct vndisk *, char *));
|
|
void readconfig __P((int));
|
|
static void usage __P((void));
|
|
static int getsize(const char *arg);
|
|
static void do_autolabel(const char *dev, const char *label);
|
|
int what_opt __P((char *, u_long *));
|
|
|
|
int
|
|
main(argc, argv)
|
|
char **argv;
|
|
{
|
|
register int i, rv;
|
|
int flags = 0;
|
|
int size = 0;
|
|
char *autolabel = NULL;
|
|
char *s;
|
|
|
|
configfile = _PATH_VNTAB;
|
|
while ((i = getopt(argc, argv, "acdef:gr:s:S:TZL:uv")) != -1)
|
|
switch (i) {
|
|
|
|
/* all -- use config file */
|
|
case 'a':
|
|
all++;
|
|
break;
|
|
|
|
/* configure */
|
|
case 'c':
|
|
flags |= VN_CONFIG;
|
|
flags &= ~VN_UNCONFIG;
|
|
break;
|
|
|
|
/* disable */
|
|
case 'd':
|
|
flags |= VN_DISABLE;
|
|
flags &= ~VN_ENABLE;
|
|
break;
|
|
|
|
/* enable */
|
|
case 'e':
|
|
flags |= (VN_ENABLE|VN_CONFIG);
|
|
flags &= ~(VN_DISABLE|VN_UNCONFIG);
|
|
break;
|
|
|
|
/* alternate config file */
|
|
case 'f':
|
|
configfile = optarg;
|
|
break;
|
|
|
|
/* fiddle global options */
|
|
case 'g':
|
|
global = 1 - global;
|
|
break;
|
|
|
|
/* reset options */
|
|
case 'r':
|
|
for (s = strtok(optarg, ","); s; s = strtok(NULL, ",")) {
|
|
if (what_opt(s, &resetopt))
|
|
errx(1, "invalid options '%s'", s);
|
|
}
|
|
flags |= VN_RESET;
|
|
break;
|
|
|
|
/* set options */
|
|
case 's':
|
|
for (s = strtok(optarg, ","); s; s = strtok(NULL, ",")) {
|
|
if (what_opt(s, &setopt))
|
|
errx(1, "invalid options '%s'", s);
|
|
}
|
|
flags |= VN_SET;
|
|
break;
|
|
|
|
/* unconfigure */
|
|
case 'u':
|
|
flags |= (VN_DISABLE|VN_UNCONFIG);
|
|
flags &= ~(VN_ENABLE|VN_CONFIG);
|
|
break;
|
|
|
|
/* verbose */
|
|
case 'v':
|
|
verbose++;
|
|
break;
|
|
|
|
case 'S':
|
|
size = getsize(optarg);
|
|
flags |= VN_CONFIG;
|
|
flags &= ~VN_UNCONFIG;
|
|
break;
|
|
|
|
case 'T':
|
|
flags |= VN_TRUNCATE;
|
|
break;
|
|
|
|
case 'Z':
|
|
flags |= VN_ZERO;
|
|
break;
|
|
|
|
case 'L':
|
|
autolabel = optarg;
|
|
break;
|
|
|
|
default:
|
|
usage();
|
|
}
|
|
|
|
if (modfind("vn") < 0)
|
|
if (kldload("vn") < 0 || modfind("vn") < 0)
|
|
warnx( "cannot find or load \"vn\" kernel module");
|
|
|
|
if (flags == 0)
|
|
flags = VN_CONFIG;
|
|
if (all) {
|
|
readconfig(flags);
|
|
} else {
|
|
if (argc < optind + 1)
|
|
usage();
|
|
vndisks[0].dev = argv[optind++];
|
|
vndisks[0].file = argv[optind++]; /* may be NULL */
|
|
vndisks[0].flags = flags;
|
|
vndisks[0].size = size;
|
|
vndisks[0].autolabel = autolabel;
|
|
if (optind < argc)
|
|
getoptions(&vndisks[0], argv[optind]);
|
|
nvndisks = 1;
|
|
}
|
|
rv = 0;
|
|
for (i = 0; i < nvndisks; i++)
|
|
rv += config(&vndisks[i]);
|
|
exit(rv);
|
|
}
|
|
|
|
int
|
|
what_opt(str,p)
|
|
char *str;
|
|
u_long *p;
|
|
{
|
|
if (!strcmp(str,"reserve")) { *p |= VN_RESERVE; return 0; }
|
|
if (!strcmp(str,"labels")) { *p |= VN_LABELS; return 0; }
|
|
if (!strcmp(str,"follow")) { *p |= VN_FOLLOW; return 0; }
|
|
if (!strcmp(str,"debug")) { *p |= VN_DEBUG; return 0; }
|
|
if (!strcmp(str,"all")) { *p |= ~0; return 0; }
|
|
if (!strcmp(str,"none")) { *p |= 0; return 0; }
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
config(vnp)
|
|
struct vndisk *vnp;
|
|
{
|
|
char *dev, *file, *oarg;
|
|
int flags;
|
|
struct vn_ioctl vnio;
|
|
register int rv;
|
|
char *rdev;
|
|
FILE *f;
|
|
u_long l;
|
|
int pgsize = getpagesize();
|
|
|
|
rv = 0;
|
|
|
|
/*
|
|
* Prepend "/dev/" to the specified device name, if necessary.
|
|
* Operate on vnp->dev because it is used later.
|
|
*/
|
|
if (vnp->dev[0] != '/' && vnp->dev[0] != '.')
|
|
(void)asprintf(&vnp->dev, "%s%s", _PATH_DEV, vnp->dev);
|
|
dev = vnp->dev;
|
|
file = vnp->file;
|
|
flags = vnp->flags;
|
|
oarg = vnp->oarg;
|
|
|
|
if (flags & VN_IGNORE)
|
|
return(0);
|
|
|
|
/*
|
|
* When a regular file has been specified, do any requested setup
|
|
* of the file. Truncation (also creates the file if necessary),
|
|
* sizing, and zeroing.
|
|
*/
|
|
|
|
if (file && vnp->size != 0 && (flags & VN_CONFIG)) {
|
|
int fd;
|
|
struct stat st;
|
|
|
|
if (flags & VN_TRUNCATE)
|
|
fd = open(file, O_RDWR|O_CREAT|O_TRUNC);
|
|
else
|
|
fd = open(file, O_RDWR);
|
|
if (fd >= 0 && fstat(fd, &st) == 0 && S_ISREG(st.st_mode)) {
|
|
if (st.st_size < (off_t)vnp->size * pgsize)
|
|
ftruncate(fd, (off_t)vnp->size * pgsize);
|
|
if (vnp->size != 0)
|
|
st.st_size = (off_t)vnp->size * pgsize;
|
|
|
|
if (flags & VN_ZERO) {
|
|
char *buf = malloc(ZBUFSIZE);
|
|
bzero(buf, ZBUFSIZE);
|
|
while (st.st_size > 0) {
|
|
int n = (st.st_size > ZBUFSIZE) ?
|
|
ZBUFSIZE : (int)st.st_size;
|
|
if (write(fd, buf, n) != n) {
|
|
ftruncate(fd, 0);
|
|
printf("Unable to ZERO file %s\n", file);
|
|
return(0);
|
|
}
|
|
st.st_size -= (off_t)n;
|
|
}
|
|
}
|
|
close(fd);
|
|
} else {
|
|
printf("Unable to open file %s\n", file);
|
|
return(0);
|
|
}
|
|
}
|
|
|
|
rdev = dev;
|
|
(void)asprintf(&rdev, "%s.ctl", dev);
|
|
f = fopen(rdev, "rw");
|
|
if (f == NULL)
|
|
f = fopen(dev, "rw");
|
|
if (f == NULL) {
|
|
warn("%s", dev);
|
|
return(1);
|
|
}
|
|
vnio.vn_file = file;
|
|
vnio.vn_size = vnp->size; /* non-zero only if swap backed */
|
|
|
|
/*
|
|
* Disable the device
|
|
*/
|
|
if (flags & VN_DISABLE) {
|
|
if (flags & (VN_MOUNTRO|VN_MOUNTRW)) {
|
|
rv = unmount(oarg, 0);
|
|
if (rv) {
|
|
if (errno == EBUSY)
|
|
flags &= ~VN_UNCONFIG;
|
|
if ((flags & VN_UNCONFIG) == 0)
|
|
warn("umount");
|
|
} else if (verbose)
|
|
printf("%s: unmounted\n", dev);
|
|
}
|
|
}
|
|
/*
|
|
* Clear (un-configure) the device
|
|
*/
|
|
if (flags & VN_UNCONFIG) {
|
|
rv = ioctl(fileno(f), VNIOCDETACH, &vnio);
|
|
if (rv) {
|
|
if (errno == ENODEV) {
|
|
if (verbose)
|
|
printf("%s: not configured\n", dev);
|
|
rv = 0;
|
|
} else
|
|
warn("VNIOCDETACH");
|
|
} else if (verbose)
|
|
printf("%s: cleared\n", dev);
|
|
}
|
|
/*
|
|
* Set specified options
|
|
*/
|
|
if (flags & VN_SET) {
|
|
l = setopt;
|
|
if (global)
|
|
rv = ioctl(fileno(f), VNIOCGSET, &l);
|
|
else
|
|
rv = ioctl(fileno(f), VNIOCUSET, &l);
|
|
if (rv) {
|
|
warn("VNIO[GU]SET");
|
|
} else if (verbose)
|
|
printf("%s: flags now=%08x\n",dev,l);
|
|
}
|
|
/*
|
|
* Reset specified options
|
|
*/
|
|
if (flags & VN_RESET) {
|
|
l = resetopt;
|
|
if (global)
|
|
rv = ioctl(fileno(f), VNIOCGCLEAR, &l);
|
|
else
|
|
rv = ioctl(fileno(f), VNIOCUCLEAR, &l);
|
|
if (rv) {
|
|
warn("VNIO[GU]CLEAR");
|
|
} else if (verbose)
|
|
printf("%s: flags now=%08x\n",dev,l);
|
|
}
|
|
/*
|
|
* Configure the device
|
|
*/
|
|
if (flags & VN_CONFIG) {
|
|
rv = ioctl(fileno(f), VNIOCATTACH, &vnio);
|
|
if (rv) {
|
|
warn("VNIOCATTACH");
|
|
flags &= ~VN_ENABLE;
|
|
} else {
|
|
if (verbose) {
|
|
printf(
|
|
"%s: %d bytes on %s\n",
|
|
dev, vnio.vn_size, file
|
|
);
|
|
}
|
|
/*
|
|
* autolabel
|
|
*/
|
|
if (vnp->autolabel) {
|
|
do_autolabel(vnp->dev, vnp->autolabel);
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* Set an option
|
|
*/
|
|
if (flags & VN_SET) {
|
|
l = setopt;
|
|
if (global)
|
|
rv = ioctl(fileno(f), VNIOCGSET, &l);
|
|
else
|
|
rv = ioctl(fileno(f), VNIOCUSET, &l);
|
|
if (rv) {
|
|
warn("VNIO[GU]SET");
|
|
} else if (verbose)
|
|
printf("%s: flags now=%08lx\n",dev,l);
|
|
}
|
|
/*
|
|
* Reset an option
|
|
*/
|
|
if (flags & VN_RESET) {
|
|
l = resetopt;
|
|
if (global)
|
|
rv = ioctl(fileno(f), VNIOCGCLEAR, &l);
|
|
else
|
|
rv = ioctl(fileno(f), VNIOCUCLEAR, &l);
|
|
if (rv) {
|
|
warn("VNIO[GU]CLEAR");
|
|
} else if (verbose)
|
|
printf("%s: flags now=%08lx\n",dev,l);
|
|
}
|
|
|
|
/*
|
|
* Enable special functions on the device
|
|
*/
|
|
if (flags & VN_ENABLE) {
|
|
if (flags & VN_SWAP) {
|
|
rv = swapon(dev);
|
|
if (rv)
|
|
warn("swapon");
|
|
else if (verbose)
|
|
printf("%s: swapping enabled\n", dev);
|
|
}
|
|
if (flags & (VN_MOUNTRO|VN_MOUNTRW)) {
|
|
struct ufs_args args;
|
|
int mflags;
|
|
|
|
args.fspec = dev;
|
|
mflags = (flags & VN_MOUNTRO) ? MNT_RDONLY : 0;
|
|
rv = mount("ufs", oarg, mflags, &args);
|
|
if (rv)
|
|
warn("mount");
|
|
else if (verbose)
|
|
printf("%s: mounted on %s\n", dev, oarg);
|
|
}
|
|
}
|
|
/* done: */
|
|
fclose(f);
|
|
fflush(stdout);
|
|
return(rv < 0);
|
|
}
|
|
|
|
#define EOL(c) ((c) == '\0' || (c) == '\n')
|
|
#define WHITE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n')
|
|
|
|
void
|
|
readconfig(flags)
|
|
int flags;
|
|
{
|
|
char buf[LINESIZE];
|
|
FILE *f;
|
|
register char *cp, *sp;
|
|
register int ix;
|
|
|
|
f = fopen(configfile, "r");
|
|
if (f == NULL)
|
|
err(1, "%s", configfile);
|
|
ix = 0;
|
|
while (fgets(buf, LINESIZE, f) != NULL) {
|
|
cp = buf;
|
|
if (*cp == '#')
|
|
continue;
|
|
while (!EOL(*cp) && WHITE(*cp))
|
|
cp++;
|
|
if (EOL(*cp))
|
|
continue;
|
|
sp = cp;
|
|
while (!EOL(*cp) && !WHITE(*cp))
|
|
cp++;
|
|
if (EOL(*cp))
|
|
continue;
|
|
*cp++ = '\0';
|
|
vndisks[ix].dev = malloc(cp - sp);
|
|
strcpy(vndisks[ix].dev, sp);
|
|
while (!EOL(*cp) && WHITE(*cp))
|
|
cp++;
|
|
if (EOL(*cp))
|
|
continue;
|
|
sp = cp;
|
|
while (!EOL(*cp) && !WHITE(*cp))
|
|
cp++;
|
|
*cp++ = '\0';
|
|
|
|
if (*sp == '%' && strtol(sp + 1, NULL, 0) > 0) {
|
|
vndisks[ix].size = getsize(sp + 1);
|
|
} else {
|
|
vndisks[ix].file = malloc(cp - sp);
|
|
strcpy(vndisks[ix].file, sp);
|
|
}
|
|
|
|
while (!EOL(*cp) && WHITE(*cp))
|
|
cp++;
|
|
vndisks[ix].flags = flags;
|
|
if (!EOL(*cp)) {
|
|
sp = cp;
|
|
while (!EOL(*cp) && !WHITE(*cp))
|
|
cp++;
|
|
*cp++ = '\0';
|
|
getoptions(&vndisks[ix], sp);
|
|
}
|
|
nvndisks++;
|
|
ix++;
|
|
}
|
|
}
|
|
|
|
void
|
|
getoptions(vnp, fstr)
|
|
struct vndisk *vnp;
|
|
char *fstr;
|
|
{
|
|
int flags = 0;
|
|
char *oarg = NULL;
|
|
|
|
if (strcmp(fstr, "swap") == 0)
|
|
flags |= VN_SWAP;
|
|
else if (strncmp(fstr, "mount=", 6) == 0) {
|
|
flags |= VN_MOUNTRW;
|
|
oarg = &fstr[6];
|
|
} else if (strncmp(fstr, "mountrw=", 8) == 0) {
|
|
flags |= VN_MOUNTRW;
|
|
oarg = &fstr[8];
|
|
} else if (strncmp(fstr, "mountro=", 8) == 0) {
|
|
flags |= VN_MOUNTRO;
|
|
oarg = &fstr[8];
|
|
} else if (strcmp(fstr, "ignore") == 0)
|
|
flags |= VN_IGNORE;
|
|
vnp->flags |= flags;
|
|
if (oarg) {
|
|
vnp->oarg = malloc(strlen(oarg) + 1);
|
|
strcpy(vnp->oarg, oarg);
|
|
} else
|
|
vnp->oarg = NULL;
|
|
}
|
|
|
|
static void
|
|
usage()
|
|
{
|
|
fprintf(stderr, "%s\n%s\n%s\n",
|
|
"usage: vnconfig [-cdeguv] [-s option] [-r option] [-S value] special_file",
|
|
" [regular_file] [feature]",
|
|
" vnconfig -a [-cdeguv] [-s option] [-r option] [-f config_file]");
|
|
exit(1);
|
|
}
|
|
|
|
static int
|
|
getsize(const char *arg)
|
|
{
|
|
char *ptr;
|
|
int pgsize = getpagesize();
|
|
quad_t size = strtoq(arg, &ptr, 0);
|
|
|
|
switch(tolower(*ptr)) {
|
|
case 't':
|
|
/*
|
|
* GULP! Terrabytes. It's actually possible to create
|
|
* a 7.9 TB VN device, though newfs can't handle any single
|
|
* filesystem larger then 1 TB.
|
|
*/
|
|
size *= 1024;
|
|
/* fall through */
|
|
case 'g':
|
|
size *= 1024;
|
|
/* fall through */
|
|
default:
|
|
case 'm':
|
|
size *= 1024;
|
|
/* fall through */
|
|
case 'k':
|
|
size *= 1024;
|
|
/* fall through */
|
|
case 'c':
|
|
break;
|
|
}
|
|
size = (size + pgsize - 1) / pgsize;
|
|
return((int)size);
|
|
}
|
|
|
|
/*
|
|
* DO_AUTOLABEL
|
|
*
|
|
* Automatically label the device. This will wipe any preexisting
|
|
* label.
|
|
*/
|
|
|
|
static void
|
|
do_autolabel(const char *dev, const char *label)
|
|
{
|
|
/* XXX not yet implemented */
|
|
fprintf(stderr, "autolabel not yet implemented, sorry\n");
|
|
exit(1);
|
|
}
|
|
|