FreeBSD-5.3/sbin/ccdconfig/ccdconfig.c
/*
* Copyright (c) 2003 Poul-Henning Kamp
* Copyright (c) 1995 Jason R. Thorpe.
* All rights reserved.
*
* 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 for the NetBSD Project
* by Jason R. Thorpe.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sbin/ccdconfig/ccdconfig.c,v 1.34 2003/08/07 19:10:35 johan Exp $");
#include <sys/param.h>
#include <sys/linker.h>
#include <sys/module.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libgeom.h>
#define CCDF_UNIFORM 0x02 /* use LCCD of sizes for uniform interleave */
#define CCDF_MIRROR 0x04 /* use mirroring */
#include "pathnames.h"
static int lineno = 0;
static int verbose = 0;
static const char *ccdconf = _PATH_CCDCONF;
struct flagval {
const char *fv_flag;
int fv_val;
} flagvaltab[] = {
{ "CCDF_UNIFORM", CCDF_UNIFORM },
{ "uniform", CCDF_UNIFORM },
{ "CCDF_MIRROR", CCDF_MIRROR },
{ "mirror", CCDF_MIRROR },
{ "none", 0 },
{ NULL, 0 },
};
#define CCD_CONFIG 0 /* configure a device */
#define CCD_CONFIGALL 1 /* configure all devices */
#define CCD_UNCONFIG 2 /* unconfigure a device */
#define CCD_UNCONFIGALL 3 /* unconfigure all devices */
#define CCD_DUMP 4 /* dump a ccd's configuration */
static int do_single(int, char **, int);
static int do_all(int);
static int dump_ccd(int, char **);
static int flags_to_val(char *);
static int resolve_ccdname(char *);
static void usage(void);
int
main(int argc, char *argv[])
{
int ch, options = 0, action = CCD_CONFIG;
while ((ch = getopt(argc, argv, "cCf:guUv")) != -1) {
switch (ch) {
case 'c':
action = CCD_CONFIG;
++options;
break;
case 'C':
action = CCD_CONFIGALL;
++options;
break;
case 'f':
ccdconf = optarg;
break;
case 'g':
action = CCD_DUMP;
break;
case 'u':
action = CCD_UNCONFIG;
++options;
break;
case 'U':
action = CCD_UNCONFIGALL;
++options;
break;
case 'v':
verbose = 1;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (options > 1)
usage();
if (modfind("g_ccd") < 0) {
/* Not present in kernel, try loading it */
if (kldload("geom_ccd") < 0 || modfind("g_ccd") < 0)
warn("geom_ccd module not available!");
}
switch (action) {
case CCD_CONFIG:
case CCD_UNCONFIG:
exit(do_single(argc, argv, action));
/* NOTREACHED */
case CCD_CONFIGALL:
case CCD_UNCONFIGALL:
exit(do_all(action));
/* NOTREACHED */
case CCD_DUMP:
exit(dump_ccd(argc, argv));
/* NOTREACHED */
}
/* NOTREACHED */
return (0);
}
static int
do_single(int argc, char **argv, int action)
{
char *cp, *cp2;
int ccd, noflags = 0, i, ileave, flags = 0;
struct gctl_req *grq;
char const *errstr;
char buf1[BUFSIZ];
int ex;
/*
* If unconfiguring, all arguments are treated as ccds.
*/
if (action == CCD_UNCONFIG || action == CCD_UNCONFIGALL) {
ex = 0;
for (i = 0; argc != 0; ) {
cp = *argv++; --argc;
if ((ccd = resolve_ccdname(cp)) < 0) {
warnx("invalid ccd name: %s", cp);
i = 1;
continue;
}
grq = gctl_get_handle();
gctl_ro_param(grq, "verb", -1, "destroy geom");
gctl_ro_param(grq, "class", -1, "CCD");
sprintf(buf1, "ccd%d", ccd);
gctl_ro_param(grq, "geom", -1, buf1);
errstr = gctl_issue(grq);
if (errstr == NULL) {
if (verbose)
printf("%s unconfigured\n", cp);
gctl_free(grq);
continue;
}
warnx(
"%s\nor possibly kernel and ccdconfig out of sync",
errstr);
ex = 1;
}
return (ex);
}
/* Make sure there are enough arguments. */
if (argc < 4) {
if (argc == 3) {
/* Assume that no flags are specified. */
noflags = 1;
} else {
if (action == CCD_CONFIGALL) {
warnx("%s: bad line: %d", ccdconf, lineno);
return (1);
} else
usage();
}
}
/* First argument is the ccd to configure. */
cp = *argv++; --argc;
if ((ccd = resolve_ccdname(cp)) < 0) {
warnx("invalid ccd name: %s", cp);
return (1);
}
/* Next argument is the interleave factor. */
cp = *argv++; --argc;
errno = 0; /* to check for ERANGE */
ileave = (int)strtol(cp, &cp2, 10);
if ((errno == ERANGE) || (ileave < 0) || (*cp2 != '\0')) {
warnx("invalid interleave factor: %s", cp);
return (1);
}
if (noflags == 0) {
/* Next argument is the ccd configuration flags. */
cp = *argv++; --argc;
if ((flags = flags_to_val(cp)) < 0) {
warnx("invalid flags argument: %s", cp);
return (1);
}
}
grq = gctl_get_handle();
gctl_ro_param(grq, "verb", -1, "create geom");
gctl_ro_param(grq, "class", -1, "CCD");
gctl_ro_param(grq, "unit", sizeof(ccd), &ccd);
gctl_ro_param(grq, "ileave", sizeof(ileave), &ileave);
if (flags & CCDF_UNIFORM)
gctl_ro_param(grq, "uniform", -1, "");
if (flags & CCDF_MIRROR)
gctl_ro_param(grq, "mirror", -1, "");
gctl_ro_param(grq, "nprovider", sizeof(argc), &argc);
for (i = 0; i < argc; i++) {
sprintf(buf1, "provider%d", i);
cp = argv[i];
if (!strncmp(cp, _PATH_DEV, strlen(_PATH_DEV)))
cp += strlen(_PATH_DEV);
gctl_ro_param(grq, buf1, -1, cp);
}
gctl_rw_param(grq, "output", sizeof(buf1), buf1);
errstr = gctl_issue(grq);
if (errstr == NULL) {
if (verbose) {
printf("%s", buf1);
}
gctl_free(grq);
return (0);
}
warnx(
"%s\nor possibly kernel and ccdconfig out of sync",
errstr);
return (1);
}
static int
do_all(int action)
{
FILE *f;
char line[_POSIX2_LINE_MAX];
char *cp, **argv;
int argc, rval;
gid_t egid;
rval = 0;
egid = getegid();
setegid(getgid());
if ((f = fopen(ccdconf, "r")) == NULL) {
setegid(egid);
warn("fopen: %s", ccdconf);
return (1);
}
setegid(egid);
while (fgets(line, sizeof(line), f) != NULL) {
argc = 0;
argv = NULL;
++lineno;
if ((cp = strrchr(line, '\n')) != NULL)
*cp = '\0';
/* Break up the line and pass it's contents to do_single(). */
if (line[0] == '\0')
goto end_of_line;
for (cp = line; (cp = strtok(cp, " \t")) != NULL; cp = NULL) {
if (*cp == '#')
break;
if ((argv = realloc(argv,
sizeof(char *) * ++argc)) == NULL) {
warnx("no memory to configure ccds");
return (1);
}
argv[argc - 1] = cp;
/*
* If our action is to unconfigure all, then pass
* just the first token to do_single() and ignore
* the rest. Since this will be encountered on
* our first pass through the line, the Right
* Thing will happen.
*/
if (action == CCD_UNCONFIGALL) {
if (do_single(argc, argv, action))
rval = 1;
goto end_of_line;
}
}
if (argc != 0)
if (do_single(argc, argv, action))
rval = 1;
end_of_line:
if (argv != NULL)
free(argv);
}
(void)fclose(f);
return (rval);
}
static int
resolve_ccdname(char *name)
{
if (!strncmp(name, _PATH_DEV, strlen(_PATH_DEV)))
name += strlen(_PATH_DEV);
if (strncmp(name, "ccd", 3))
return -1;
name += 3;
if (!isdigit(*name))
return -1;
return (strtoul(name, NULL, 10));
}
static int
dumpout(int unit)
{
static int v;
struct gctl_req *grq;
int ncp;
char *cp;
char const *errstr;
grq = gctl_get_handle();
ncp = 65536;
cp = malloc(ncp);
gctl_ro_param(grq, "verb", -1, "list");
gctl_ro_param(grq, "class", -1, "CCD");
gctl_ro_param(grq, "unit", sizeof(unit), &unit);
gctl_rw_param(grq, "output", ncp, cp);
errstr = gctl_issue(grq);
if (errstr != NULL)
errx(1, "%s\nor possibly kernel and ccdconfig out of sync",
errstr);
if (strlen(cp) == 0)
errx(1, "ccd%d not configured", unit);
if (verbose && !v) {
printf("# ccd\t\tileave\tflags\tcomponent devices\n");
v = 1;
}
printf("%s", cp);
free(cp);
return (0);
}
static int
dump_ccd(int argc, char **argv)
{
int i, error;
if (argc == 0) {
error = dumpout(-1);
} else {
error = 0;
for (i = 0; error == 0 && i < argc; i++)
error = dumpout(resolve_ccdname(argv[i]));
}
return (error);
}
static int
flags_to_val(char *flags)
{
char *cp, *tok;
int i, tmp, val;
size_t flagslen;
errno = 0; /* to check for ERANGE */
val = (int)strtol(flags, &cp, 0);
if ((errno != ERANGE) && (*cp == '\0')) {
if (val & ~(CCDF_UNIFORM|CCDF_MIRROR))
return (-1);
return (val);
}
flagslen = strlen(flags);
/* Check for values represented by strings. */
if ((cp = strdup(flags)) == NULL)
err(1, "no memory to parse flags");
tmp = 0;
for (tok = cp; (tok = strtok(tok, ",")) != NULL; tok = NULL) {
for (i = 0; flagvaltab[i].fv_flag != NULL; ++i)
if (strcmp(tok, flagvaltab[i].fv_flag) == 0)
break;
if (flagvaltab[i].fv_flag == NULL) {
free(cp);
return (-1);
}
tmp |= flagvaltab[i].fv_val;
}
/* If we get here, the string was ok. */
free(cp);
return (tmp);
}
static void
usage(void)
{
fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n",
"usage: ccdconfig [-cv] ccd ileave [flags] dev [...]",
" ccdconfig -C [-v] [-f config_file]",
" ccdconfig -u [-v] ccd [...]",
" ccdconfig -U [-v] [-f config_file]",
" ccdconfig -g [ccd [...]]");
exit(1);
}