| Current Path : /usr/src/sbin/geom/class/eli/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/sbin/geom/class/eli/geom_eli.c |
/*-
* Copyright (c) 2004-2010 Pawel Jakub Dawidek <pjd@FreeBSD.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sbin/geom/class/eli/geom_eli.c 215704 2010-11-22 20:10:48Z brucec $");
#include <sys/types.h>
#include <sys/sysctl.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <readpassphrase.h>
#include <string.h>
#include <strings.h>
#include <libgeom.h>
#include <paths.h>
#include <errno.h>
#include <assert.h>
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <opencrypto/cryptodev.h>
#include <geom/eli/g_eli.h>
#include <geom/eli/pkcs5v2.h>
#include "core/geom.h"
#include "misc/subr.h"
uint32_t lib_version = G_LIB_VERSION;
uint32_t version = G_ELI_VERSION;
#define GELI_BACKUP_DIR "/var/backups/"
#define GELI_ENC_ALGO "aes"
static void eli_main(struct gctl_req *req, unsigned flags);
static void eli_init(struct gctl_req *req);
static void eli_attach(struct gctl_req *req);
static void eli_configure(struct gctl_req *req);
static void eli_setkey(struct gctl_req *req);
static void eli_delkey(struct gctl_req *req);
static void eli_resume(struct gctl_req *req);
static void eli_kill(struct gctl_req *req);
static void eli_backup(struct gctl_req *req);
static void eli_restore(struct gctl_req *req);
static void eli_resize(struct gctl_req *req);
static void eli_clear(struct gctl_req *req);
static void eli_dump(struct gctl_req *req);
static int eli_backup_create(struct gctl_req *req, const char *prov,
const char *file);
/*
* Available commands:
*
* init [-bhPv] [-a aalgo] [-B backupfile] [-e ealgo] [-i iterations] [-l keylen] [-J newpassfile] [-K newkeyfile] prov
* label - alias for 'init'
* attach [-dprv] [-j passfile] [-k keyfile] prov
* detach [-fl] prov ...
* stop - alias for 'detach'
* onetime [-d] [-a aalgo] [-e ealgo] [-l keylen] prov
* configure [-bB] prov ...
* setkey [-pPv] [-n keyno] [-j passfile] [-J newpassfile] [-k keyfile] [-K newkeyfile] prov
* delkey [-afv] [-n keyno] prov
* suspend [-v] -a | prov ...
* resume [-pv] [-j passfile] [-k keyfile] prov
* kill [-av] [prov ...]
* backup [-v] prov file
* restore [-fv] file prov
* resize [-v] -s oldsize prov
* clear [-v] prov ...
* dump [-v] prov ...
*/
struct g_command class_commands[] = {
{ "init", G_FLAG_VERBOSE, eli_main,
{
{ 'a', "aalgo", "", G_TYPE_STRING },
{ 'b', "boot", NULL, G_TYPE_BOOL },
{ 'B', "backupfile", "", G_TYPE_STRING },
{ 'e', "ealgo", GELI_ENC_ALGO, G_TYPE_STRING },
{ 'i', "iterations", "-1", G_TYPE_NUMBER },
{ 'J', "newpassfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'K', "newkeyfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'l', "keylen", "0", G_TYPE_NUMBER },
{ 'P', "nonewpassphrase", NULL, G_TYPE_BOOL },
{ 's', "sectorsize", "0", G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"[-bPv] [-a aalgo] [-B backupfile] [-e ealgo] [-i iterations] [-l keylen] [-J newpassfile] [-K newkeyfile] [-s sectorsize] prov"
},
{ "label", G_FLAG_VERBOSE, eli_main,
{
{ 'a', "aalgo", "", G_TYPE_STRING },
{ 'b', "boot", NULL, G_TYPE_BOOL },
{ 'B', "backupfile", "", G_TYPE_STRING },
{ 'e', "ealgo", GELI_ENC_ALGO, G_TYPE_STRING },
{ 'i', "iterations", "-1", G_TYPE_NUMBER },
{ 'J', "newpassfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'K', "newkeyfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'l', "keylen", "0", G_TYPE_NUMBER },
{ 'P', "nonewpassphrase", NULL, G_TYPE_BOOL },
{ 's', "sectorsize", "0", G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"- an alias for 'init'"
},
{ "attach", G_FLAG_VERBOSE | G_FLAG_LOADKLD, eli_main,
{
{ 'd', "detach", NULL, G_TYPE_BOOL },
{ 'j', "passfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'k', "keyfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'p', "nopassphrase", NULL, G_TYPE_BOOL },
{ 'r', "readonly", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-dprv] [-j passfile] [-k keyfile] prov"
},
{ "detach", 0, NULL,
{
{ 'f', "force", NULL, G_TYPE_BOOL },
{ 'l', "last", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-fl] prov ..."
},
{ "stop", 0, NULL,
{
{ 'f', "force", NULL, G_TYPE_BOOL },
{ 'l', "last", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"- an alias for 'detach'"
},
{ "onetime", G_FLAG_VERBOSE | G_FLAG_LOADKLD, NULL,
{
{ 'a', "aalgo", "", G_TYPE_STRING },
{ 'd', "detach", NULL, G_TYPE_BOOL },
{ 'e', "ealgo", GELI_ENC_ALGO, G_TYPE_STRING },
{ 'l', "keylen", "0", G_TYPE_NUMBER },
{ 's', "sectorsize", "0", G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"[-d] [-a aalgo] [-e ealgo] [-l keylen] [-s sectorsize] prov"
},
{ "configure", G_FLAG_VERBOSE, eli_main,
{
{ 'b', "boot", NULL, G_TYPE_BOOL },
{ 'B', "noboot", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-bB] prov ..."
},
{ "setkey", G_FLAG_VERBOSE, eli_main,
{
{ 'i', "iterations", "-1", G_TYPE_NUMBER },
{ 'j', "passfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'J', "newpassfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'k', "keyfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'K', "newkeyfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'n', "keyno", "-1", G_TYPE_NUMBER },
{ 'p', "nopassphrase", NULL, G_TYPE_BOOL },
{ 'P', "nonewpassphrase", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-pPv] [-n keyno] [-i iterations] [-j passfile] [-J newpassfile] [-k keyfile] [-K newkeyfile] prov"
},
{ "delkey", G_FLAG_VERBOSE, eli_main,
{
{ 'a', "all", NULL, G_TYPE_BOOL },
{ 'f', "force", NULL, G_TYPE_BOOL },
{ 'n', "keyno", "-1", G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"[-afv] [-n keyno] prov"
},
{ "suspend", G_FLAG_VERBOSE, NULL,
{
{ 'a', "all", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-v] -a | prov ..."
},
{ "resume", G_FLAG_VERBOSE, eli_main,
{
{ 'j', "passfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'k', "keyfile", G_VAL_OPTIONAL, G_TYPE_STRING | G_TYPE_MULTI },
{ 'p', "nopassphrase", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-pv] [-j passfile] [-k keyfile] prov"
},
{ "kill", G_FLAG_VERBOSE, eli_main,
{
{ 'a', "all", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-av] [prov ...]"
},
{ "backup", G_FLAG_VERBOSE, eli_main, G_NULL_OPTS,
"[-v] prov file"
},
{ "restore", G_FLAG_VERBOSE, eli_main,
{
{ 'f', "force", NULL, G_TYPE_BOOL },
G_OPT_SENTINEL
},
"[-fv] file prov"
},
{ "resize", G_FLAG_VERBOSE, eli_main,
{
{ 's', "oldsize", NULL, G_TYPE_NUMBER },
G_OPT_SENTINEL
},
"[-v] -s oldsize prov"
},
{ "clear", G_FLAG_VERBOSE, eli_main, G_NULL_OPTS,
"[-v] prov ..."
},
{ "dump", G_FLAG_VERBOSE, eli_main, G_NULL_OPTS,
"[-v] prov ..."
},
G_CMD_SENTINEL
};
static int verbose = 0;
static int
eli_protect(struct gctl_req *req)
{
struct rlimit rl;
/* Disable core dumps. */
rl.rlim_cur = 0;
rl.rlim_max = 0;
if (setrlimit(RLIMIT_CORE, &rl) == -1) {
gctl_error(req, "Cannot disable core dumps: %s.",
strerror(errno));
return (-1);
}
/* Disable swapping. */
if (mlockall(MCL_FUTURE) == -1) {
gctl_error(req, "Cannot lock memory: %s.", strerror(errno));
return (-1);
}
return (0);
}
static void
eli_main(struct gctl_req *req, unsigned int flags)
{
const char *name;
if (eli_protect(req) == -1)
return;
if ((flags & G_FLAG_VERBOSE) != 0)
verbose = 1;
name = gctl_get_ascii(req, "verb");
if (name == NULL) {
gctl_error(req, "No '%s' argument.", "verb");
return;
}
if (strcmp(name, "init") == 0 || strcmp(name, "label") == 0)
eli_init(req);
else if (strcmp(name, "attach") == 0)
eli_attach(req);
else if (strcmp(name, "configure") == 0)
eli_configure(req);
else if (strcmp(name, "setkey") == 0)
eli_setkey(req);
else if (strcmp(name, "delkey") == 0)
eli_delkey(req);
else if (strcmp(name, "resume") == 0)
eli_resume(req);
else if (strcmp(name, "kill") == 0)
eli_kill(req);
else if (strcmp(name, "backup") == 0)
eli_backup(req);
else if (strcmp(name, "restore") == 0)
eli_restore(req);
else if (strcmp(name, "resize") == 0)
eli_resize(req);
else if (strcmp(name, "dump") == 0)
eli_dump(req);
else if (strcmp(name, "clear") == 0)
eli_clear(req);
else
gctl_error(req, "Unknown command: %s.", name);
}
static void
arc4rand(unsigned char *buf, size_t size)
{
uint32_t *buf4;
size_t size4;
unsigned int i;
buf4 = (uint32_t *)buf;
size4 = size / 4;
for (i = 0; i < size4; i++)
buf4[i] = arc4random();
for (i *= 4; i < size; i++)
buf[i] = arc4random() % 0xff;
}
static int
eli_is_attached(const char *prov)
{
char name[MAXPATHLEN];
unsigned secsize;
/*
* Not the best way to do it, but the easiest.
* We try to open provider and check if it is a GEOM provider
* by asking about its sectorsize.
*/
snprintf(name, sizeof(name), "%s%s", prov, G_ELI_SUFFIX);
secsize = g_get_sectorsize(name);
if (secsize > 0)
return (1);
return (0);
}
static int
eli_genkey_files(struct gctl_req *req, bool new, const char *type,
struct hmac_ctx *ctxp, char *passbuf, size_t passbufsize)
{
char *p, buf[MAXPHYS], argname[16];
const char *file;
int error, fd, i;
ssize_t done;
assert((strcmp(type, "keyfile") == 0 && ctxp != NULL &&
passbuf == NULL && passbufsize == 0) ||
(strcmp(type, "passfile") == 0 && ctxp == NULL &&
passbuf != NULL && passbufsize > 0));
assert(strcmp(type, "keyfile") == 0 || passbuf[0] == '\0');
for (i = 0; ; i++) {
snprintf(argname, sizeof(argname), "%s%s%d",
new ? "new" : "", type, i);
/* No more {key,pass}files? */
if (!gctl_has_param(req, argname))
return (i);
file = gctl_get_ascii(req, "%s", argname);
assert(file != NULL);
if (strcmp(file, "-") == 0)
fd = STDIN_FILENO;
else {
fd = open(file, O_RDONLY);
if (fd == -1) {
gctl_error(req, "Cannot open %s %s: %s.",
type, file, strerror(errno));
return (-1);
}
}
if (strcmp(type, "keyfile") == 0) {
while ((done = read(fd, buf, sizeof(buf))) > 0)
g_eli_crypto_hmac_update(ctxp, buf, done);
} else /* if (strcmp(type, "passfile") == 0) */ {
while ((done = read(fd, buf, sizeof(buf) - 1)) > 0) {
buf[done] = '\0';
p = strchr(buf, '\n');
if (p != NULL) {
*p = '\0';
done = p - buf;
}
if (strlcat(passbuf, buf, passbufsize) >=
passbufsize) {
gctl_error(req,
"Passphrase in %s too long.", file);
bzero(buf, sizeof(buf));
return (-1);
}
if (p != NULL)
break;
}
}
error = errno;
if (strcmp(file, "-") != 0)
close(fd);
bzero(buf, sizeof(buf));
if (done == -1) {
gctl_error(req, "Cannot read %s %s: %s.",
type, file, strerror(error));
return (-1);
}
}
/* NOTREACHED */
}
static int
eli_genkey_passphrase_prompt(struct gctl_req *req, bool new, char *passbuf,
size_t passbufsize)
{
char *p;
for (;;) {
p = readpassphrase(
new ? "Enter new passphrase:" : "Enter passphrase:",
passbuf, passbufsize, RPP_ECHO_OFF | RPP_REQUIRE_TTY);
if (p == NULL) {
bzero(passbuf, passbufsize);
gctl_error(req, "Cannot read passphrase: %s.",
strerror(errno));
return (-1);
}
if (new) {
char tmpbuf[BUFSIZ];
p = readpassphrase("Reenter new passphrase: ",
tmpbuf, sizeof(tmpbuf),
RPP_ECHO_OFF | RPP_REQUIRE_TTY);
if (p == NULL) {
bzero(passbuf, passbufsize);
gctl_error(req,
"Cannot read passphrase: %s.",
strerror(errno));
return (-1);
}
if (strcmp(passbuf, tmpbuf) != 0) {
bzero(passbuf, passbufsize);
fprintf(stderr, "They didn't match.\n");
continue;
}
bzero(tmpbuf, sizeof(tmpbuf));
}
return (0);
}
/* NOTREACHED */
}
static int
eli_genkey_passphrase(struct gctl_req *req, struct g_eli_metadata *md, bool new,
struct hmac_ctx *ctxp)
{
char passbuf[MAXPHYS];
bool nopassphrase;
int nfiles;
nopassphrase =
gctl_get_int(req, new ? "nonewpassphrase" : "nopassphrase");
if (nopassphrase) {
if (gctl_has_param(req, new ? "newpassfile0" : "passfile0")) {
gctl_error(req,
"Options -%c and -%c are mutually exclusive.",
new ? 'J' : 'j', new ? 'P' : 'p');
return (-1);
}
return (0);
}
if (!new && md->md_iterations == -1) {
gctl_error(req, "Missing -p flag.");
return (-1);
}
passbuf[0] = '\0';
nfiles = eli_genkey_files(req, new, "passfile", NULL, passbuf,
sizeof(passbuf));
if (nfiles == -1)
return (-1);
else if (nfiles == 0) {
if (eli_genkey_passphrase_prompt(req, new, passbuf,
sizeof(passbuf)) == -1) {
return (-1);
}
}
/*
* Field md_iterations equal to -1 means "choose some sane
* value for me".
*/
if (md->md_iterations == -1) {
assert(new);
if (verbose)
printf("Calculating number of iterations...\n");
md->md_iterations = pkcs5v2_calculate(2000000);
assert(md->md_iterations > 0);
if (verbose) {
printf("Done, using %d iterations.\n",
md->md_iterations);
}
}
/*
* If md_iterations is equal to 0, user doesn't want PKCS#5v2.
*/
if (md->md_iterations == 0) {
g_eli_crypto_hmac_update(ctxp, md->md_salt,
sizeof(md->md_salt));
g_eli_crypto_hmac_update(ctxp, passbuf, strlen(passbuf));
} else /* if (md->md_iterations > 0) */ {
unsigned char dkey[G_ELI_USERKEYLEN];
pkcs5v2_genkey(dkey, sizeof(dkey), md->md_salt,
sizeof(md->md_salt), passbuf, md->md_iterations);
g_eli_crypto_hmac_update(ctxp, dkey, sizeof(dkey));
bzero(dkey, sizeof(dkey));
}
bzero(passbuf, sizeof(passbuf));
return (0);
}
static unsigned char *
eli_genkey(struct gctl_req *req, struct g_eli_metadata *md, unsigned char *key,
bool new)
{
struct hmac_ctx ctx;
bool nopassphrase;
int nfiles;
nopassphrase =
gctl_get_int(req, new ? "nonewpassphrase" : "nopassphrase");
g_eli_crypto_hmac_init(&ctx, NULL, 0);
nfiles = eli_genkey_files(req, new, "keyfile", &ctx, NULL, 0);
if (nfiles == -1)
return (NULL);
else if (nfiles == 0 && nopassphrase) {
gctl_error(req, "No key components given.");
return (NULL);
}
if (eli_genkey_passphrase(req, md, new, &ctx) == -1)
return (NULL);
g_eli_crypto_hmac_final(&ctx, key, 0);
return (key);
}
static int
eli_metadata_read(struct gctl_req *req, const char *prov,
struct g_eli_metadata *md)
{
unsigned char sector[sizeof(struct g_eli_metadata)];
int error;
if (g_get_sectorsize(prov) == 0) {
int fd;
/* This is a file probably. */
fd = open(prov, O_RDONLY);
if (fd == -1) {
gctl_error(req, "Cannot open %s: %s.", prov,
strerror(errno));
return (-1);
}
if (read(fd, sector, sizeof(sector)) != sizeof(sector)) {
gctl_error(req, "Cannot read metadata from %s: %s.",
prov, strerror(errno));
close(fd);
return (-1);
}
close(fd);
} else {
/* This is a GEOM provider. */
error = g_metadata_read(prov, sector, sizeof(sector),
G_ELI_MAGIC);
if (error != 0) {
gctl_error(req, "Cannot read metadata from %s: %s.",
prov, strerror(error));
return (-1);
}
}
if (eli_metadata_decode(sector, md) != 0) {
gctl_error(req, "MD5 hash mismatch for %s.", prov);
return (-1);
}
return (0);
}
static int
eli_metadata_store(struct gctl_req *req, const char *prov,
struct g_eli_metadata *md)
{
unsigned char sector[sizeof(struct g_eli_metadata)];
int error;
eli_metadata_encode(md, sector);
if (g_get_sectorsize(prov) == 0) {
int fd;
/* This is a file probably. */
fd = open(prov, O_WRONLY | O_TRUNC);
if (fd == -1) {
gctl_error(req, "Cannot open %s: %s.", prov,
strerror(errno));
bzero(sector, sizeof(sector));
return (-1);
}
if (write(fd, sector, sizeof(sector)) != sizeof(sector)) {
gctl_error(req, "Cannot write metadata to %s: %s.",
prov, strerror(errno));
bzero(sector, sizeof(sector));
close(fd);
return (-1);
}
close(fd);
} else {
/* This is a GEOM provider. */
error = g_metadata_store(prov, sector, sizeof(sector));
if (error != 0) {
gctl_error(req, "Cannot write metadata to %s: %s.",
prov, strerror(errno));
bzero(sector, sizeof(sector));
return (-1);
}
}
bzero(sector, sizeof(sector));
return (0);
}
static void
eli_init(struct gctl_req *req)
{
struct g_eli_metadata md;
unsigned char sector[sizeof(struct g_eli_metadata)];
unsigned char key[G_ELI_USERKEYLEN];
char backfile[MAXPATHLEN];
const char *str, *prov;
unsigned secsize;
off_t mediasize;
intmax_t val;
int error, nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs != 1) {
gctl_error(req, "Invalid number of arguments.");
return;
}
prov = gctl_get_ascii(req, "arg0");
mediasize = g_get_mediasize(prov);
secsize = g_get_sectorsize(prov);
if (mediasize == 0 || secsize == 0) {
gctl_error(req, "Cannot get informations about %s: %s.", prov,
strerror(errno));
return;
}
bzero(&md, sizeof(md));
strlcpy(md.md_magic, G_ELI_MAGIC, sizeof(md.md_magic));
md.md_version = G_ELI_VERSION;
md.md_flags = 0;
if (gctl_get_int(req, "boot"))
md.md_flags |= G_ELI_FLAG_BOOT;
md.md_ealgo = CRYPTO_ALGORITHM_MIN - 1;
str = gctl_get_ascii(req, "aalgo");
if (*str != '\0') {
md.md_aalgo = g_eli_str2aalgo(str);
if (md.md_aalgo >= CRYPTO_ALGORITHM_MIN &&
md.md_aalgo <= CRYPTO_ALGORITHM_MAX) {
md.md_flags |= G_ELI_FLAG_AUTH;
} else {
/*
* For backward compatibility, check if the -a option
* was used to provide encryption algorithm.
*/
md.md_ealgo = g_eli_str2ealgo(str);
if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
gctl_error(req,
"Invalid authentication algorithm.");
return;
} else {
fprintf(stderr, "warning: The -e option, not "
"the -a option is now used to specify "
"encryption algorithm to use.\n");
}
}
}
if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
str = gctl_get_ascii(req, "ealgo");
md.md_ealgo = g_eli_str2ealgo(str);
if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
gctl_error(req, "Invalid encryption algorithm.");
return;
}
}
val = gctl_get_intmax(req, "keylen");
md.md_keylen = val;
md.md_keylen = g_eli_keylen(md.md_ealgo, md.md_keylen);
if (md.md_keylen == 0) {
gctl_error(req, "Invalid key length.");
return;
}
md.md_provsize = mediasize;
val = gctl_get_intmax(req, "iterations");
if (val != -1) {
int nonewpassphrase;
/*
* Don't allow to set iterations when there will be no
* passphrase.
*/
nonewpassphrase = gctl_get_int(req, "nonewpassphrase");
if (nonewpassphrase) {
gctl_error(req,
"Options -i and -P are mutually exclusive.");
return;
}
}
md.md_iterations = val;
val = gctl_get_intmax(req, "sectorsize");
if (val == 0)
md.md_sectorsize = secsize;
else {
if (val < 0 || (val % secsize) != 0) {
gctl_error(req, "Invalid sector size.");
return;
}
if (val > sysconf(_SC_PAGE_SIZE)) {
fprintf(stderr,
"warning: Using sectorsize bigger than the page size!\n");
}
md.md_sectorsize = val;
}
md.md_keys = 0x01;
arc4rand(md.md_salt, sizeof(md.md_salt));
arc4rand(md.md_mkeys, sizeof(md.md_mkeys));
/* Generate user key. */
if (eli_genkey(req, &md, key, true) == NULL) {
bzero(key, sizeof(key));
bzero(&md, sizeof(md));
return;
}
/* Encrypt the first and the only Master Key. */
error = g_eli_mkey_encrypt(md.md_ealgo, key, md.md_keylen, md.md_mkeys);
bzero(key, sizeof(key));
if (error != 0) {
bzero(&md, sizeof(md));
gctl_error(req, "Cannot encrypt Master Key: %s.",
strerror(error));
return;
}
eli_metadata_encode(&md, sector);
bzero(&md, sizeof(md));
error = g_metadata_store(prov, sector, sizeof(sector));
bzero(sector, sizeof(sector));
if (error != 0) {
gctl_error(req, "Cannot store metadata on %s: %s.", prov,
strerror(error));
return;
}
if (verbose)
printf("Metadata value stored on %s.\n", prov);
/* Backup metadata to a file. */
str = gctl_get_ascii(req, "backupfile");
if (str[0] != '\0') {
/* Backupfile given be the user, just copy it. */
strlcpy(backfile, str, sizeof(backfile));
} else {
/* Generate file name automatically. */
const char *p = prov;
unsigned int i;
if (strncmp(p, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
p += sizeof(_PATH_DEV) - 1;
snprintf(backfile, sizeof(backfile), "%s%s.eli",
GELI_BACKUP_DIR, p);
/* Replace all / with _. */
for (i = strlen(GELI_BACKUP_DIR); backfile[i] != '\0'; i++) {
if (backfile[i] == '/')
backfile[i] = '_';
}
}
if (strcmp(backfile, "none") != 0 &&
eli_backup_create(req, prov, backfile) == 0) {
printf("\nMetadata backup can be found in %s and\n", backfile);
printf("can be restored with the following command:\n");
printf("\n\t# geli restore %s %s\n\n", backfile, prov);
}
}
static void
eli_attach(struct gctl_req *req)
{
struct g_eli_metadata md;
unsigned char key[G_ELI_USERKEYLEN];
const char *prov;
off_t mediasize;
int nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs != 1) {
gctl_error(req, "Invalid number of arguments.");
return;
}
prov = gctl_get_ascii(req, "arg0");
if (eli_metadata_read(req, prov, &md) == -1)
return;
mediasize = g_get_mediasize(prov);
if (md.md_provsize != (uint64_t)mediasize) {
gctl_error(req, "Provider size mismatch.");
return;
}
if (eli_genkey(req, &md, key, false) == NULL) {
bzero(key, sizeof(key));
return;
}
gctl_ro_param(req, "key", sizeof(key), key);
if (gctl_issue(req) == NULL) {
if (verbose)
printf("Attached to %s.\n", prov);
}
bzero(key, sizeof(key));
}
static void
eli_configure_detached(struct gctl_req *req, const char *prov, bool boot)
{
struct g_eli_metadata md;
if (eli_metadata_read(req, prov, &md) == -1)
return;
if (boot && (md.md_flags & G_ELI_FLAG_BOOT)) {
if (verbose)
printf("BOOT flag already configured for %s.\n", prov);
} else if (!boot && !(md.md_flags & G_ELI_FLAG_BOOT)) {
if (verbose)
printf("BOOT flag not configured for %s.\n", prov);
} else {
if (boot)
md.md_flags |= G_ELI_FLAG_BOOT;
else
md.md_flags &= ~G_ELI_FLAG_BOOT;
eli_metadata_store(req, prov, &md);
}
bzero(&md, sizeof(md));
}
static void
eli_configure(struct gctl_req *req)
{
const char *prov;
bool boot, noboot;
int i, nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs == 0) {
gctl_error(req, "Too few arguments.");
return;
}
boot = gctl_get_int(req, "boot");
noboot = gctl_get_int(req, "noboot");
if (boot && noboot) {
gctl_error(req, "Options -b and -B are mutually exclusive.");
return;
}
if (!boot && !noboot) {
gctl_error(req, "No option given.");
return;
}
/* First attached providers. */
gctl_issue(req);
/* Now the rest. */
for (i = 0; i < nargs; i++) {
prov = gctl_get_ascii(req, "arg%d", i);
if (!eli_is_attached(prov))
eli_configure_detached(req, prov, boot);
}
}
static void
eli_setkey_attached(struct gctl_req *req, struct g_eli_metadata *md)
{
unsigned char key[G_ELI_USERKEYLEN];
intmax_t val, old = 0;
int error;
val = gctl_get_intmax(req, "iterations");
/* Check if iterations number should be changed. */
if (val != -1)
md->md_iterations = val;
else
old = md->md_iterations;
/* Generate key for Master Key encryption. */
if (eli_genkey(req, md, key, true) == NULL) {
bzero(key, sizeof(key));
return;
}
/*
* If number of iterations has changed, but wasn't given as a
* command-line argument, update the request.
*/
if (val == -1 && md->md_iterations != old) {
error = gctl_change_param(req, "iterations", sizeof(intmax_t),
&md->md_iterations);
assert(error == 0);
}
gctl_ro_param(req, "key", sizeof(key), key);
gctl_issue(req);
bzero(key, sizeof(key));
}
static void
eli_setkey_detached(struct gctl_req *req, const char *prov,
struct g_eli_metadata *md)
{
unsigned char key[G_ELI_USERKEYLEN], mkey[G_ELI_DATAIVKEYLEN];
unsigned char *mkeydst;
unsigned int nkey;
intmax_t val;
int error;
if (md->md_keys == 0) {
gctl_error(req, "No valid keys on %s.", prov);
return;
}
/* Generate key for Master Key decryption. */
if (eli_genkey(req, md, key, false) == NULL) {
bzero(key, sizeof(key));
return;
}
/* Decrypt Master Key. */
error = g_eli_mkey_decrypt(md, key, mkey, &nkey);
bzero(key, sizeof(key));
if (error != 0) {
bzero(md, sizeof(*md));
if (error == -1)
gctl_error(req, "Wrong key for %s.", prov);
else /* if (error > 0) */ {
gctl_error(req, "Cannot decrypt Master Key: %s.",
strerror(error));
}
return;
}
if (verbose)
printf("Decrypted Master Key %u.\n", nkey);
val = gctl_get_intmax(req, "keyno");
if (val != -1)
nkey = val;
#if 0
else
; /* Use the key number which was found during decryption. */
#endif
if (nkey >= G_ELI_MAXMKEYS) {
gctl_error(req, "Invalid '%s' argument.", "keyno");
return;
}
val = gctl_get_intmax(req, "iterations");
/* Check if iterations number should and can be changed. */
if (val != -1) {
if (bitcount32(md->md_keys) != 1) {
gctl_error(req, "To be able to use '-i' option, only "
"one key can be defined.");
return;
}
if (md->md_keys != (1 << nkey)) {
gctl_error(req, "Only already defined key can be "
"changed when '-i' option is used.");
return;
}
md->md_iterations = val;
}
mkeydst = md->md_mkeys + nkey * G_ELI_MKEYLEN;
md->md_keys |= (1 << nkey);
bcopy(mkey, mkeydst, sizeof(mkey));
bzero(mkey, sizeof(mkey));
/* Generate key for Master Key encryption. */
if (eli_genkey(req, md, key, true) == NULL) {
bzero(key, sizeof(key));
bzero(md, sizeof(*md));
return;
}
/* Encrypt the Master-Key with the new key. */
error = g_eli_mkey_encrypt(md->md_ealgo, key, md->md_keylen, mkeydst);
bzero(key, sizeof(key));
if (error != 0) {
bzero(md, sizeof(*md));
gctl_error(req, "Cannot encrypt Master Key: %s.",
strerror(error));
return;
}
/* Store metadata with fresh key. */
eli_metadata_store(req, prov, md);
bzero(md, sizeof(*md));
}
static void
eli_setkey(struct gctl_req *req)
{
struct g_eli_metadata md;
const char *prov;
int nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs != 1) {
gctl_error(req, "Invalid number of arguments.");
return;
}
prov = gctl_get_ascii(req, "arg0");
if (eli_metadata_read(req, prov, &md) == -1)
return;
if (eli_is_attached(prov))
eli_setkey_attached(req, &md);
else
eli_setkey_detached(req, prov, &md);
if (req->error == NULL || req->error[0] == '\0') {
printf("Note, that the master key encrypted with old keys "
"and/or passphrase may still exists in a metadata backup "
"file.\n");
}
}
static void
eli_delkey_attached(struct gctl_req *req, const char *prov __unused)
{
gctl_issue(req);
}
static void
eli_delkey_detached(struct gctl_req *req, const char *prov)
{
struct g_eli_metadata md;
unsigned char *mkeydst;
unsigned int nkey;
intmax_t val;
bool all, force;
if (eli_metadata_read(req, prov, &md) == -1)
return;
all = gctl_get_int(req, "all");
if (all)
arc4rand(md.md_mkeys, sizeof(md.md_mkeys));
else {
force = gctl_get_int(req, "force");
val = gctl_get_intmax(req, "keyno");
if (val == -1) {
gctl_error(req, "Key number has to be specified.");
return;
}
nkey = val;
if (nkey >= G_ELI_MAXMKEYS) {
gctl_error(req, "Invalid '%s' argument.", "keyno");
return;
}
if (!(md.md_keys & (1 << nkey)) && !force) {
gctl_error(req, "Master Key %u is not set.", nkey);
return;
}
md.md_keys &= ~(1 << nkey);
if (md.md_keys == 0 && !force) {
gctl_error(req, "This is the last Master Key. Use '-f' "
"option if you really want to remove it.");
return;
}
mkeydst = md.md_mkeys + nkey * G_ELI_MKEYLEN;
arc4rand(mkeydst, G_ELI_MKEYLEN);
}
eli_metadata_store(req, prov, &md);
bzero(&md, sizeof(md));
}
static void
eli_delkey(struct gctl_req *req)
{
const char *prov;
int nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs != 1) {
gctl_error(req, "Invalid number of arguments.");
return;
}
prov = gctl_get_ascii(req, "arg0");
if (eli_is_attached(prov))
eli_delkey_attached(req, prov);
else
eli_delkey_detached(req, prov);
}
static void
eli_resume(struct gctl_req *req)
{
struct g_eli_metadata md;
unsigned char key[G_ELI_USERKEYLEN];
const char *prov;
off_t mediasize;
int nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs != 1) {
gctl_error(req, "Invalid number of arguments.");
return;
}
prov = gctl_get_ascii(req, "arg0");
if (eli_metadata_read(req, prov, &md) == -1)
return;
mediasize = g_get_mediasize(prov);
if (md.md_provsize != (uint64_t)mediasize) {
gctl_error(req, "Provider size mismatch.");
return;
}
if (eli_genkey(req, &md, key, false) == NULL) {
bzero(key, sizeof(key));
return;
}
gctl_ro_param(req, "key", sizeof(key), key);
if (gctl_issue(req) == NULL) {
if (verbose)
printf("Resumed %s.\n", prov);
}
bzero(key, sizeof(key));
}
static int
eli_trash_metadata(struct gctl_req *req, const char *prov, int fd, off_t offset)
{
unsigned int overwrites;
unsigned char *sector;
ssize_t size;
int error;
size = sizeof(overwrites);
if (sysctlbyname("kern.geom.eli.overwrites", &overwrites, &size,
NULL, 0) == -1 || overwrites == 0) {
overwrites = G_ELI_OVERWRITES;
}
size = g_sectorsize(fd);
if (size <= 0) {
gctl_error(req, "Cannot obtain provider sector size %s: %s.",
prov, strerror(errno));
return (-1);
}
sector = malloc(size);
if (sector == NULL) {
gctl_error(req, "Cannot allocate %zd bytes of memory.", size);
return (-1);
}
error = 0;
do {
arc4rand(sector, size);
if (pwrite(fd, sector, size, offset) != size) {
if (error == 0)
error = errno;
}
(void)g_flush(fd);
} while (--overwrites > 0);
if (error != 0) {
gctl_error(req, "Cannot trash metadata on provider %s: %s.",
prov, strerror(error));
return (-1);
}
return (0);
}
static void
eli_kill_detached(struct gctl_req *req, const char *prov)
{
off_t offset;
int fd;
/*
* NOTE: Maybe we should verify if this is geli provider first,
* but 'kill' command is quite critical so better don't waste
* the time.
*/
#if 0
error = g_metadata_read(prov, (unsigned char *)&md, sizeof(md),
G_ELI_MAGIC);
if (error != 0) {
gctl_error(req, "Cannot read metadata from %s: %s.", prov,
strerror(error));
return;
}
#endif
fd = g_open(prov, 1);
if (fd == -1) {
gctl_error(req, "Cannot open provider %s: %s.", prov,
strerror(errno));
return;
}
offset = g_mediasize(fd) - g_sectorsize(fd);
if (offset <= 0) {
gctl_error(req,
"Cannot obtain media size or sector size for provider %s: %s.",
prov, strerror(errno));
(void)g_close(fd);
return;
}
(void)eli_trash_metadata(req, prov, fd, offset);
(void)g_close(fd);
}
static void
eli_kill(struct gctl_req *req)
{
const char *prov;
int i, nargs, all;
nargs = gctl_get_int(req, "nargs");
all = gctl_get_int(req, "all");
if (!all && nargs == 0) {
gctl_error(req, "Too few arguments.");
return;
}
/*
* How '-a' option combine with a list of providers:
* Delete Master Keys from all attached providers:
* geli kill -a
* Delete Master Keys from all attached providers and from
* detached da0 and da1:
* geli kill -a da0 da1
* Delete Master Keys from (attached or detached) da0 and da1:
* geli kill da0 da1
*/
/* First detached providers. */
for (i = 0; i < nargs; i++) {
prov = gctl_get_ascii(req, "arg%d", i);
if (!eli_is_attached(prov))
eli_kill_detached(req, prov);
}
/* Now attached providers. */
gctl_issue(req);
}
static int
eli_backup_create(struct gctl_req *req, const char *prov, const char *file)
{
struct g_eli_metadata md;
unsigned char *sector;
ssize_t secsize;
off_t mediasize;
int filefd, provfd, ret;
ret = -1;
provfd = filefd = -1;
sector = NULL;
secsize = 0;
provfd = g_open(prov, 0);
if (provfd == -1) {
gctl_error(req, "Cannot open %s: %s.", prov, strerror(errno));
goto out;
}
filefd = open(file, O_WRONLY | O_TRUNC | O_CREAT, 0600);
if (filefd == -1) {
gctl_error(req, "Cannot open %s: %s.", file, strerror(errno));
goto out;
}
mediasize = g_mediasize(provfd);
secsize = g_sectorsize(provfd);
if (mediasize == -1 || secsize == -1) {
gctl_error(req, "Cannot get informations about %s: %s.", prov,
strerror(errno));
goto out;
}
sector = malloc(secsize);
if (sector == NULL) {
gctl_error(req, "Cannot allocate memory.");
goto out;
}
/* Read metadata from the provider. */
if (pread(provfd, sector, secsize, mediasize - secsize) != secsize) {
gctl_error(req, "Cannot read metadata: %s.", strerror(errno));
goto out;
}
/* Check if this is geli provider. */
if (eli_metadata_decode(sector, &md) != 0) {
gctl_error(req, "MD5 hash mismatch: not a geli provider?");
goto out;
}
/* Write metadata to the destination file. */
if (write(filefd, sector, secsize) != secsize) {
gctl_error(req, "Cannot write to %s: %s.", file,
strerror(errno));
goto out;
}
(void)fsync(filefd);
/* Success. */
ret = 0;
out:
if (provfd >= 0)
(void)g_close(provfd);
if (filefd >= 0)
(void)close(filefd);
if (sector != NULL) {
bzero(sector, secsize);
free(sector);
}
return (ret);
}
static void
eli_backup(struct gctl_req *req)
{
const char *file, *prov;
int nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs != 2) {
gctl_error(req, "Invalid number of arguments.");
return;
}
prov = gctl_get_ascii(req, "arg0");
file = gctl_get_ascii(req, "arg1");
eli_backup_create(req, prov, file);
}
static void
eli_restore(struct gctl_req *req)
{
struct g_eli_metadata md;
const char *file, *prov;
unsigned char *sector;
ssize_t secsize;
off_t mediasize;
int nargs, filefd, provfd;
nargs = gctl_get_int(req, "nargs");
if (nargs != 2) {
gctl_error(req, "Invalid number of arguments.");
return;
}
file = gctl_get_ascii(req, "arg0");
prov = gctl_get_ascii(req, "arg1");
provfd = filefd = -1;
sector = NULL;
secsize = 0;
filefd = open(file, O_RDONLY);
if (filefd == -1) {
gctl_error(req, "Cannot open %s: %s.", file, strerror(errno));
goto out;
}
provfd = g_open(prov, 1);
if (provfd == -1) {
gctl_error(req, "Cannot open %s: %s.", prov, strerror(errno));
goto out;
}
mediasize = g_mediasize(provfd);
secsize = g_sectorsize(provfd);
if (mediasize == -1 || secsize == -1) {
gctl_error(req, "Cannot get informations about %s: %s.", prov,
strerror(errno));
goto out;
}
sector = malloc(secsize);
if (sector == NULL) {
gctl_error(req, "Cannot allocate memory.");
goto out;
}
/* Read metadata from the backup file. */
if (read(filefd, sector, secsize) != secsize) {
gctl_error(req, "Cannot read from %s: %s.", file,
strerror(errno));
goto out;
}
/* Check if this file contains geli metadata. */
if (eli_metadata_decode(sector, &md) != 0) {
gctl_error(req, "MD5 hash mismatch: not a geli backup file?");
goto out;
}
/* Check if the provider size has changed since we did the backup. */
if (md.md_provsize != (uint64_t)mediasize) {
if (gctl_get_int(req, "force")) {
md.md_provsize = mediasize;
eli_metadata_encode(&md, sector);
} else {
gctl_error(req, "Provider size mismatch: "
"wrong backup file?");
goto out;
}
}
/* Write metadata from the provider. */
if (pwrite(provfd, sector, secsize, mediasize - secsize) != secsize) {
gctl_error(req, "Cannot write metadata: %s.", strerror(errno));
goto out;
}
(void)g_flush(provfd);
out:
if (provfd >= 0)
(void)g_close(provfd);
if (filefd >= 0)
(void)close(filefd);
if (sector != NULL) {
bzero(sector, secsize);
free(sector);
}
}
static void
eli_resize(struct gctl_req *req)
{
struct g_eli_metadata md;
const char *prov;
unsigned char *sector;
ssize_t secsize;
off_t mediasize, oldsize;
int nargs, provfd;
nargs = gctl_get_int(req, "nargs");
if (nargs != 1) {
gctl_error(req, "Invalid number of arguments.");
return;
}
prov = gctl_get_ascii(req, "arg0");
provfd = -1;
sector = NULL;
secsize = 0;
provfd = g_open(prov, 1);
if (provfd == -1) {
gctl_error(req, "Cannot open %s: %s.", prov, strerror(errno));
goto out;
}
mediasize = g_mediasize(provfd);
secsize = g_sectorsize(provfd);
if (mediasize == -1 || secsize == -1) {
gctl_error(req, "Cannot get information about %s: %s.", prov,
strerror(errno));
goto out;
}
sector = malloc(secsize);
if (sector == NULL) {
gctl_error(req, "Cannot allocate memory.");
goto out;
}
oldsize = gctl_get_intmax(req, "oldsize");
if (oldsize < 0 || oldsize > mediasize) {
gctl_error(req, "Invalid oldsize: Out of range.");
goto out;
}
if (oldsize == mediasize) {
gctl_error(req, "Size hasn't changed.");
goto out;
}
/* Read metadata from the 'oldsize' offset. */
if (pread(provfd, sector, secsize, oldsize - secsize) != secsize) {
gctl_error(req, "Cannot read old metadata: %s.",
strerror(errno));
goto out;
}
/* Check if this sector contains geli metadata. */
if (eli_metadata_decode(sector, &md) != 0) {
gctl_error(req, "MD5 hash mismatch: no metadata for oldsize.");
goto out;
}
/*
* If the old metadata doesn't have a correct provider size, refuse
* to resize.
*/
if (md.md_provsize != (uint64_t)oldsize) {
gctl_error(req, "Provider size mismatch at oldsize.");
goto out;
}
/*
* Update the old metadata with the current provider size and write
* it back to the correct place on the provider.
*/
md.md_provsize = mediasize;
eli_metadata_encode(&md, sector);
if (pwrite(provfd, sector, secsize, mediasize - secsize) != secsize) {
gctl_error(req, "Cannot write metadata: %s.", strerror(errno));
goto out;
}
(void)g_flush(provfd);
/* Now trash the old metadata. */
if (eli_trash_metadata(req, prov, provfd, oldsize - secsize) == -1)
goto out;
out:
if (provfd >= 0)
(void)g_close(provfd);
if (sector != NULL) {
bzero(sector, secsize);
free(sector);
}
}
static void
eli_clear(struct gctl_req *req)
{
const char *name;
int error, i, nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs < 1) {
gctl_error(req, "Too few arguments.");
return;
}
for (i = 0; i < nargs; i++) {
name = gctl_get_ascii(req, "arg%d", i);
error = g_metadata_clear(name, G_ELI_MAGIC);
if (error != 0) {
fprintf(stderr, "Cannot clear metadata on %s: %s.\n",
name, strerror(error));
gctl_error(req, "Not fully done.");
continue;
}
if (verbose)
printf("Metadata cleared on %s.\n", name);
}
}
static void
eli_dump(struct gctl_req *req)
{
struct g_eli_metadata md, tmpmd;
const char *name;
int error, i, nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs < 1) {
gctl_error(req, "Too few arguments.");
return;
}
for (i = 0; i < nargs; i++) {
name = gctl_get_ascii(req, "arg%d", i);
error = g_metadata_read(name, (unsigned char *)&tmpmd,
sizeof(tmpmd), G_ELI_MAGIC);
if (error != 0) {
fprintf(stderr, "Cannot read metadata from %s: %s.\n",
name, strerror(error));
gctl_error(req, "Not fully done.");
continue;
}
if (eli_metadata_decode((unsigned char *)&tmpmd, &md) != 0) {
fprintf(stderr, "MD5 hash mismatch for %s, skipping.\n",
name);
gctl_error(req, "Not fully done.");
continue;
}
printf("Metadata on %s:\n", name);
eli_metadata_dump(&md);
printf("\n");
}
}