static void
label_label(struct gctl_req *req)
{
struct g_label_metadata md;
const char *name, *label;
u_char sector[512];
int error, nargs;
nargs = gctl_get_int(req, "nargs");
if (nargs != 2) {
gctl_error(req, "Invalid number of arguments.");
return;
}
/*
* Clear last sector first to spoil all components if device exists.
*/
name = gctl_get_ascii(req, "arg1");
error = g_metadata_clear(name, NULL);
if (error != 0) {
gctl_error(req, "Can't store metadata on %s: %s.", name,
strerror(error));
return;
}
strlcpy(md.md_magic, G_LABEL_MAGIC, sizeof(md.md_magic));
md.md_version = G_LABEL_VERSION;
label = gctl_get_ascii(req, "arg0");
strlcpy(md.md_label, label, sizeof(md.md_label));
md.md_provsize = g_get_mediasize(name);
if (md.md_provsize == 0) {
gctl_error(req, "Can't get mediasize of %s: %s.", name,
strerror(errno));
return;
}
/*
* Ok, store metadata.
*/
label_metadata_encode(&md, sector);
error = g_metadata_store(name, sector, sizeof(sector));
if (error != 0) {
fprintf(stderr, "Can't store metadata on %s: %s.\n", name,
strerror(error));
gctl_error(req, "Not done.");
}
if (verbose)
printf("Metadata value stored on %s.\n", name);
}
static void
stripe_label(struct gctl_req *req)
{
struct g_stripe_metadata md;
intmax_t stripesize;
off_t compsize, msize;
u_char sector[512];
unsigned ssize, secsize;
const char *name;
int error, i, nargs, hardcode;
nargs = gctl_get_int(req, "nargs");
if (nargs < 3) {
gctl_error(req, "Too few arguments.");
return;
}
hardcode = gctl_get_int(req, "hardcode");
/*
* Clear last sector first to spoil all components if device exists.
*/
compsize = 0;
secsize = 0;
for (i = 1; i < nargs; i++) {
name = gctl_get_ascii(req, "arg%d", i);
msize = g_get_mediasize(name);
ssize = g_get_sectorsize(name);
if (msize == 0 || ssize == 0) {
gctl_error(req, "Can't get informations about %s: %s.",
name, strerror(errno));
return;
}
msize -= ssize;
if (compsize == 0 || (compsize > 0 && msize < compsize))
compsize = msize;
if (secsize == 0)
secsize = ssize;
else
secsize = g_lcm(secsize, ssize);
error = g_metadata_clear(name, NULL);
if (error != 0) {
gctl_error(req, "Can't store metadata on %s: %s.", name,
strerror(error));
return;
}
}
strlcpy(md.md_magic, G_STRIPE_MAGIC, sizeof(md.md_magic));
md.md_version = G_STRIPE_VERSION;
name = gctl_get_ascii(req, "arg0");
strlcpy(md.md_name, name, sizeof(md.md_name));
md.md_id = arc4random();
md.md_all = nargs - 1;
stripesize = gctl_get_intmax(req, "stripesize");
if ((stripesize % secsize) != 0) {
gctl_error(req, "Stripesize should be multiple of %u.",
secsize);
return;
}
md.md_stripesize = stripesize;
/*
* Ok, store metadata.
*/
for (i = 1; i < nargs; i++) {
name = gctl_get_ascii(req, "arg%d", i);
msize = g_get_mediasize(name);
ssize = g_get_sectorsize(name);
if (compsize < msize - ssize) {
fprintf(stderr,
"warning: %s: only %jd bytes from %jd bytes used.\n",
name, (intmax_t)compsize, (intmax_t)(msize - ssize));
}
md.md_no = i - 1;
md.md_provsize = msize;
if (!hardcode)
bzero(md.md_provider, sizeof(md.md_provider));
else {
if (strncmp(name, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
name += sizeof(_PATH_DEV) - 1;
strlcpy(md.md_provider, name, sizeof(md.md_provider));
}
stripe_metadata_encode(&md, sector);
error = g_metadata_store(name, sector, sizeof(sector));
if (error != 0) {
fprintf(stderr, "Can't store metadata on %s: %s.\n",
name, strerror(error));
gctl_error(req, "Not fully done.");
continue;
}
if (verbose)
printf("Metadata value stored on %s.\n", name);
}
}
static void
journal_label(struct gctl_req *req)
{
struct g_journal_metadata md;
const char *data, *journal, *str;
u_char sector[512];
intmax_t jsize, msize, ssize;
int error, force, i, nargs, checksum, hardcode;
nargs = gctl_get_int(req, "nargs");
str = NULL; /* gcc */
strlcpy(md.md_magic, G_JOURNAL_MAGIC, sizeof(md.md_magic));
md.md_version = G_JOURNAL_VERSION;
md.md_id = arc4random();
md.md_joffset = 0;
md.md_jid = 0;
md.md_flags = GJ_FLAG_CLEAN;
checksum = gctl_get_int(req, "checksum");
if (checksum)
md.md_flags |= GJ_FLAG_CHECKSUM;
force = gctl_get_int(req, "force");
hardcode = gctl_get_int(req, "hardcode");
if (nargs != 1 && nargs != 2) {
gctl_error(req, "Invalid number of arguments.");
return;
}
/* Verify the given providers. */
for (i = 0; i < nargs; i++) {
str = gctl_get_ascii(req, "arg%d", i);
if (g_get_mediasize(str) == 0) {
gctl_error(req, "Invalid provider %s.", str);
return;
}
}
data = gctl_get_ascii(req, "arg0");
jsize = gctl_get_intmax(req, "jsize");
journal = NULL;
switch (nargs) {
case 1:
if (!force && g_journal_fs_exists(data)) {
gctl_error(req, "File system exists on %s and this "
"operation would destroy it.\nUse -f if you "
"really want to do it.", data);
return;
}
journal = data;
msize = g_get_mediasize(data);
ssize = g_get_sectorsize(data);
if (jsize == -1) {
/*
* No journal size specified. 1GB should be safe
* default.
*/
jsize = 1073741824ULL;
} else {
if (jsize < 104857600) {
gctl_error(req, "Journal too small.");
return;
}
if ((jsize % ssize) != 0) {
gctl_error(req, "Invalid journal size.");
return;
}
}
if (jsize + ssize >= msize) {
gctl_error(req, "Provider too small for journalling. "
"You can try smaller jsize (default is %jd).",
jsize);
return;
}
md.md_jstart = msize - ssize - jsize;
md.md_jend = msize - ssize;
break;
case 2:
if (!force && g_journal_fs_using_last_sector(data)) {
gctl_error(req, "File system on %s is using the last "
"sector and this operation is going to overwrite "
"it. Use -f if you really want to do it.", data);
return;
}
journal = gctl_get_ascii(req, "arg1");
if (jsize != -1) {
gctl_error(req, "jsize argument is valid only for "
"all-in-one configuration.");
return;
}
msize = g_get_mediasize(journal);
ssize = g_get_sectorsize(journal);
md.md_jstart = 0;
md.md_jend = msize - ssize;
break;
}
if (g_get_sectorsize(data) != g_get_sectorsize(journal)) {
gctl_error(req, "Not equal sector sizes.");
return;
}
/*
* Clear last sector first, to spoil all components if device exists.
*/
for (i = 0; i < nargs; i++) {
str = gctl_get_ascii(req, "arg%d", i);
error = g_metadata_clear(str, NULL);
if (error != 0) {
gctl_error(req, "Cannot clear metadata on %s: %s.", str,
strerror(error));
return;
}
}
/*
* Ok, store metadata.
*/
for (i = 0; i < nargs; i++) {
switch (i) {
case 0:
str = data;
md.md_type = GJ_TYPE_DATA;
if (nargs == 1)
md.md_type |= GJ_TYPE_JOURNAL;
break;
case 1:
str = journal;
md.md_type = GJ_TYPE_JOURNAL;
break;
}
md.md_provsize = g_get_mediasize(str);
assert(md.md_provsize != 0);
if (!hardcode)
bzero(md.md_provider, sizeof(md.md_provider));
else {
if (strncmp(str, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
str += sizeof(_PATH_DEV) - 1;
strlcpy(md.md_provider, str, sizeof(md.md_provider));
}
journal_metadata_encode(&md, sector);
error = g_metadata_store(str, sector, sizeof(sector));
if (error != 0) {
fprintf(stderr, "Cannot store metadata on %s: %s.\n",
str, strerror(error));
gctl_error(req, "Not fully done.");
continue;
}
if (verbose)
printf("Metadata value stored on %s.\n", str);
}
}
static void
mp_label(struct gctl_req *req)
{
struct g_multipath_metadata md;
off_t disksize = 0, msize;
uint8_t *sector, *rsector;
char *ptr;
uuid_t uuid;
ssize_t secsize = 0, ssize;
uint32_t status;
const char *name, *name2, *mpname;
int error, i, nargs, fd;
nargs = gctl_get_int(req, "nargs");
if (nargs < 2) {
gctl_error(req, "wrong number of arguments.");
return;
}
/*
* First, check each provider to make sure it's the same size.
* This also gets us our size and sectorsize for the metadata.
*/
for (i = 1; i < nargs; i++) {
name = gctl_get_ascii(req, "arg%d", i);
msize = g_get_mediasize(name);
ssize = g_get_sectorsize(name);
if (msize == 0 || ssize == 0) {
gctl_error(req, "cannot get information about %s: %s.",
name, strerror(errno));
return;
}
if (i == 1) {
secsize = ssize;
disksize = msize;
} else {
if (secsize != ssize) {
gctl_error(req, "%s sector size %ju different.",
name, (intmax_t)ssize);
return;
}
if (disksize != msize) {
gctl_error(req, "%s media size %ju different.",
name, (intmax_t)msize);
return;
}
}
}
/*
* Generate metadata.
*/
strlcpy(md.md_magic, G_MULTIPATH_MAGIC, sizeof(md.md_magic));
md.md_version = G_MULTIPATH_VERSION;
mpname = gctl_get_ascii(req, "arg0");
strlcpy(md.md_name, mpname, sizeof(md.md_name));
md.md_size = disksize;
md.md_sectorsize = secsize;
uuid_create(&uuid, &status);
if (status != uuid_s_ok) {
gctl_error(req, "cannot create a UUID.");
return;
}
uuid_to_string(&uuid, &ptr, &status);
if (status != uuid_s_ok) {
gctl_error(req, "cannot stringify a UUID.");
return;
}
strlcpy(md.md_uuid, ptr, sizeof (md.md_uuid));
md.md_active_active = gctl_get_int(req, "active_active");
free(ptr);
/*
* Allocate a sector to write as metadata.
*/
sector = malloc(secsize);
if (sector == NULL) {
gctl_error(req, "unable to allocate metadata buffer");
return;
}
memset(sector, 0, secsize);
rsector = malloc(secsize);
if (rsector == NULL) {
free(sector);
gctl_error(req, "unable to allocate metadata buffer");
return;
}
/*
* encode the metadata
*/
multipath_metadata_encode(&md, sector);
/*
* Store metadata on the initial provider.
*/
name = gctl_get_ascii(req, "arg1");
error = g_metadata_store(name, sector, secsize);
if (error != 0) {
gctl_error(req, "cannot store metadata on %s: %s.", name, strerror(error));
return;
}
/*
* Now touch the rest of the providers to hint retaste.
*/
for (i = 2; i < nargs; i++) {
name2 = gctl_get_ascii(req, "arg%d", i);
fd = g_open(name2, 1);
if (fd < 0) {
fprintf(stderr, "Unable to open %s: %s.\n",
name2, strerror(errno));
continue;
}
if (pread(fd, rsector, secsize, disksize - secsize) !=
(ssize_t)secsize) {
fprintf(stderr, "Unable to read metadata from %s: %s.\n",
name2, strerror(errno));
g_close(fd);
continue;
}
g_close(fd);
if (memcmp(sector, rsector, secsize)) {
fprintf(stderr, "No metadata found on %s."
" It is not a path of %s.\n",
name2, name);
}
}
}