NetBSD-5.0.2/external/gpl2/lvm2tools/dist/tools/toollib.c
/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "tools.h"
#include "lv_alloc.h"
#include "xlate.h"
#include <sys/stat.h>
#include <sys/wait.h>
/* Command line args */
unsigned arg_count(const struct cmd_context *cmd, int a)
{
return cmd->args[a].count;
}
const char *arg_value(struct cmd_context *cmd, int a)
{
return cmd->args[a].value;
}
const char *arg_str_value(struct cmd_context *cmd, int a, const char *def)
{
return arg_count(cmd, a) ? cmd->args[a].value : def;
}
int32_t arg_int_value(struct cmd_context *cmd, int a, const int32_t def)
{
return arg_count(cmd, a) ? cmd->args[a].i_value : def;
}
uint32_t arg_uint_value(struct cmd_context *cmd, int a, const uint32_t def)
{
return arg_count(cmd, a) ? cmd->args[a].ui_value : def;
}
int64_t arg_int64_value(struct cmd_context *cmd, int a, const int64_t def)
{
return arg_count(cmd, a) ? cmd->args[a].i64_value : def;
}
uint64_t arg_uint64_value(struct cmd_context *cmd, int a, const uint64_t def)
{
return arg_count(cmd, a) ? cmd->args[a].ui64_value : def;
}
const void *arg_ptr_value(struct cmd_context *cmd, int a, const void *def)
{
return arg_count(cmd, a) ? cmd->args[a].ptr : def;
}
sign_t arg_sign_value(struct cmd_context *cmd, int a, const sign_t def)
{
return arg_count(cmd, a) ? cmd->args[a].sign : def;
}
percent_t arg_percent_value(struct cmd_context *cmd, int a, const percent_t def)
{
return arg_count(cmd, a) ? cmd->args[a].percent : def;
}
int arg_count_increment(struct cmd_context *cmd, int a)
{
return cmd->args[a].count++;
}
const char *command_name(struct cmd_context *cmd)
{
return cmd->command->name;
}
/*
* Strip dev_dir if present
*/
char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
unsigned *dev_dir_found)
{
const char *dmdir = dm_dir();
size_t dmdir_len = strlen(dmdir), vglv_sz;
char *vgname, *lvname, *layer, *vglv;
/* FIXME Do this properly */
if (*vg_name == '/') {
while (*vg_name == '/')
vg_name++;
vg_name--;
}
/* Reformat string if /dev/mapper found */
if (!strncmp(vg_name, dmdir, dmdir_len) && vg_name[dmdir_len] == '/') {
if (dev_dir_found)
*dev_dir_found = 1;
vg_name += dmdir_len;
while (*vg_name == '/')
vg_name++;
if (!dm_split_lvm_name(cmd->mem, vg_name, &vgname, &lvname, &layer) ||
*layer) {
log_error("skip_dev_dir: Couldn't split up device name %s",
vg_name);
return (char *) vg_name;
}
vglv_sz = strlen(vgname) + strlen(lvname) + 2;
if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) ||
dm_snprintf(vglv, vglv_sz, "%s%s%s", vgname,
*lvname ? "/" : "",
lvname) < 0) {
log_error("vg/lv string alloc failed");
return (char *) vg_name;
}
return vglv;
}
if (!strncmp(vg_name, cmd->dev_dir, strlen(cmd->dev_dir))) {
if (dev_dir_found)
*dev_dir_found = 1;
vg_name += strlen(cmd->dev_dir);
while (*vg_name == '/')
vg_name++;
} else if (dev_dir_found)
*dev_dir_found = 0;
return (char *) vg_name;
}
/*
* Metadata iteration functions
*/
int process_each_lv_in_vg(struct cmd_context *cmd,
const struct volume_group *vg,
const struct list *arg_lvnames,
const struct list *tags,
void *handle,
process_single_lv_fn_t process_single)
{
int ret_max = ECMD_PROCESSED;
int ret = 0;
unsigned process_all = 0;
unsigned process_lv = 0;
unsigned tags_supplied = 0;
unsigned lvargs_supplied = 0;
unsigned lvargs_matched = 0;
struct lv_list *lvl;
if (!vg_check_status(vg, EXPORTED_VG))
return ECMD_FAILED;
if (tags && !list_empty(tags))
tags_supplied = 1;
if (arg_lvnames && !list_empty(arg_lvnames))
lvargs_supplied = 1;
/* Process all LVs in this VG if no restrictions given */
if (!tags_supplied && !lvargs_supplied)
process_all = 1;
/* Or if VG tags match */
if (!process_lv && tags_supplied &&
str_list_match_list(tags, &vg->tags)) {
process_all = 1;
}
list_iterate_items(lvl, &vg->lvs) {
if (lvl->lv->status & SNAPSHOT)
continue;
/* Should we process this LV? */
if (process_all)
process_lv = 1;
else
process_lv = 0;
/* LV tag match? */
if (!process_lv && tags_supplied &&
str_list_match_list(tags, &lvl->lv->tags)) {
process_lv = 1;
}
/* LV name match? */
if (lvargs_supplied &&
str_list_match_item(arg_lvnames, lvl->lv->name)) {
process_lv = 1;
lvargs_matched++;
}
if (!process_lv)
continue;
ret = process_single(cmd, lvl->lv, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
return ret_max;
}
if (lvargs_supplied && lvargs_matched != list_size(arg_lvnames)) {
log_error("One or more specified logical volume(s) not found.");
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
}
return ret_max;
}
int process_each_lv(struct cmd_context *cmd, int argc, char **argv,
uint32_t lock_type, void *handle,
int (*process_single) (struct cmd_context * cmd,
struct logical_volume * lv,
void *handle))
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
int ret = 0;
int consistent;
struct list *tags_arg;
struct list *vgnames; /* VGs to process */
struct str_list *sll, *strl;
struct volume_group *vg;
struct list tags, lvnames;
struct list arg_lvnames; /* Cmdline vgname or vgname/lvname */
char *vglv;
size_t vglv_sz;
const char *vgname;
list_init(&tags);
list_init(&arg_lvnames);
if (argc) {
struct list arg_vgnames;
log_verbose("Using logical volume(s) on command line");
list_init(&arg_vgnames);
for (; opt < argc; opt++) {
const char *lv_name = argv[opt];
char *vgname_def;
unsigned dev_dir_found = 0;
/* Do we have a tag or vgname or lvname? */
vgname = lv_name;
if (*vgname == '@') {
if (!validate_name(vgname + 1)) {
log_error("Skipping invalid tag %s",
vgname);
continue;
}
if (!str_list_add(cmd->mem, &tags,
dm_pool_strdup(cmd->mem,
vgname + 1))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
continue;
}
/* FIXME Jumbled parsing */
vgname = skip_dev_dir(cmd, vgname, &dev_dir_found);
if (*vgname == '/') {
log_error("\"%s\": Invalid path for Logical "
"Volume", argv[opt]);
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
continue;
}
lv_name = vgname;
if (strchr(vgname, '/')) {
/* Must be an LV */
lv_name = strchr(vgname, '/');
while (*lv_name == '/')
lv_name++;
if (!(vgname = extract_vgname(cmd, vgname))) {
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
continue;
}
} else if (!dev_dir_found &&
(vgname_def = default_vgname(cmd))) {
vgname = vgname_def;
} else
lv_name = NULL;
if (!str_list_add(cmd->mem, &arg_vgnames,
dm_pool_strdup(cmd->mem, vgname))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
if (!lv_name) {
if (!str_list_add(cmd->mem, &arg_lvnames,
dm_pool_strdup(cmd->mem,
vgname))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
} else {
vglv_sz = strlen(vgname) + strlen(lv_name) + 2;
if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) ||
dm_snprintf(vglv, vglv_sz, "%s/%s", vgname,
lv_name) < 0) {
log_error("vg/lv string alloc failed");
return ECMD_FAILED;
}
if (!str_list_add(cmd->mem, &arg_lvnames, vglv)) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
}
}
vgnames = &arg_vgnames;
}
if (!argc || !list_empty(&tags)) {
log_verbose("Finding all logical volumes");
if (!(vgnames = get_vgs(cmd, 0)) || list_empty(vgnames)) {
log_error("No volume groups found");
return ret_max;
}
}
list_iterate_items(strl, vgnames) {
vgname = strl->str;
if (is_orphan_vg(vgname))
continue; /* FIXME Unnecessary? */
if (!lock_vol(cmd, vgname, lock_type)) {
log_error("Can't lock %s: skipping", vgname);
continue;
}
if (lock_type & LCK_WRITE)
consistent = 1;
else
consistent = 0;
if (!(vg = vg_read(cmd, vgname, NULL, &consistent)) || !consistent) {
unlock_vg(cmd, vgname);
if (!vg)
log_error("Volume group \"%s\" "
"not found", vgname);
else {
if (!vg_check_status(vg, CLUSTERED)) {
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
continue;
}
log_error("Volume group \"%s\" "
"inconsistent", vgname);
}
if (!vg || !(vg = recover_vg(cmd, vgname, lock_type))) {
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
continue;
}
}
if (!vg_check_status(vg, CLUSTERED)) {
unlock_vg(cmd, vgname);
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
continue;
}
tags_arg = &tags;
list_init(&lvnames); /* LVs to be processed in this VG */
list_iterate_items(sll, &arg_lvnames) {
const char *vg_name = sll->str;
const char *lv_name = strchr(vg_name, '/');
if ((!lv_name && !strcmp(vg_name, vgname))) {
/* Process all LVs in this VG */
tags_arg = NULL;
list_init(&lvnames);
break;
} else if (!strncmp(vg_name, vgname, strlen(vgname)) &&
strlen(vgname) == (size_t) (lv_name - vg_name)) {
if (!str_list_add(cmd->mem, &lvnames,
dm_pool_strdup(cmd->mem,
lv_name + 1))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
}
}
ret = process_each_lv_in_vg(cmd, vg, &lvnames, tags_arg,
handle, process_single);
unlock_vg(cmd, vgname);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
return ret_max;
}
int process_each_segment_in_pv(struct cmd_context *cmd,
struct volume_group *vg,
struct physical_volume *pv,
void *handle,
int (*process_single) (struct cmd_context * cmd,
struct volume_group * vg,
struct pv_segment * pvseg,
void *handle))
{
struct pv_segment *pvseg;
const char *vg_name = NULL;
int ret_max = ECMD_PROCESSED;
int ret;
if (!vg && !is_orphan(pv)) {
vg_name = pv_vg_name(pv);
if (!(vg = vg_lock_and_read(cmd, vg_name, NULL, LCK_VG_READ,
CLUSTERED, 0))) {
log_error("Skipping volume group %s", vg_name);
return ECMD_FAILED;
}
}
list_iterate_items(pvseg, &pv->segments) {
ret = process_single(cmd, vg, pvseg, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
if (vg_name)
unlock_vg(cmd, vg_name);
return ret_max;
}
int process_each_segment_in_lv(struct cmd_context *cmd,
struct logical_volume *lv,
void *handle,
int (*process_single) (struct cmd_context * cmd,
struct lv_segment * seg,
void *handle))
{
struct lv_segment *seg;
int ret_max = ECMD_PROCESSED;
int ret;
list_iterate_items(seg, &lv->segments) {
ret = process_single(cmd, seg, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
return ret_max;
}
static int _process_one_vg(struct cmd_context *cmd, const char *vg_name,
const char *vgid,
struct list *tags, struct list *arg_vgnames,
uint32_t lock_type, int consistent, void *handle,
int ret_max,
int (*process_single) (struct cmd_context * cmd,
const char *vg_name,
struct volume_group * vg,
int consistent, void *handle))
{
struct volume_group *vg;
int ret = 0;
if (!lock_vol(cmd, vg_name, lock_type)) {
log_error("Can't lock volume group %s: skipping", vg_name);
return ret_max;
}
log_verbose("Finding volume group \"%s\"", vg_name);
if (!(vg = vg_read(cmd, vg_name, vgid, &consistent))) {
log_error("Volume group \"%s\" not found", vg_name);
unlock_vg(cmd, vg_name);
return ECMD_FAILED;
}
if (!vg_check_status(vg, CLUSTERED)) {
unlock_vg(cmd, vg_name);
return ECMD_FAILED;
}
if (!list_empty(tags)) {
/* Only process if a tag matches or it's on arg_vgnames */
if (!str_list_match_item(arg_vgnames, vg_name) &&
!str_list_match_list(tags, &vg->tags)) {
unlock_vg(cmd, vg_name);
return ret_max;
}
}
if ((ret = process_single(cmd, vg_name, vg, consistent,
handle)) > ret_max) {
ret_max = ret;
}
unlock_vg(cmd, vg_name);
return ret_max;
}
int process_each_vg(struct cmd_context *cmd, int argc, char **argv,
uint32_t lock_type, int consistent, void *handle,
int (*process_single) (struct cmd_context * cmd,
const char *vg_name,
struct volume_group * vg,
int consistent, void *handle))
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
struct str_list *sl;
struct list *vgnames, *vgids;
struct list arg_vgnames, tags;
const char *vg_name, *vgid;
list_init(&tags);
list_init(&arg_vgnames);
if (argc) {
log_verbose("Using volume group(s) on command line");
for (; opt < argc; opt++) {
vg_name = argv[opt];
if (*vg_name == '@') {
if (!validate_name(vg_name + 1)) {
log_error("Skipping invalid tag %s",
vg_name);
continue;
}
if (!str_list_add(cmd->mem, &tags,
dm_pool_strdup(cmd->mem,
vg_name + 1))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
continue;
}
vg_name = skip_dev_dir(cmd, vg_name, NULL);
if (strchr(vg_name, '/')) {
log_error("Invalid volume group name: %s",
vg_name);
continue;
}
if (!str_list_add(cmd->mem, &arg_vgnames,
dm_pool_strdup(cmd->mem, vg_name))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
}
vgnames = &arg_vgnames;
}
if (!argc || !list_empty(&tags)) {
log_verbose("Finding all volume groups");
if (!(vgids = get_vgids(cmd, 0)) || list_empty(vgids)) {
log_error("No volume groups found");
return ret_max;
}
list_iterate_items(sl, vgids) {
vgid = sl->str;
if (!vgid || !(vg_name = vgname_from_vgid(cmd->mem, vgid)) ||
is_orphan_vg(vg_name))
continue;
ret_max = _process_one_vg(cmd, vg_name, vgid, &tags,
&arg_vgnames,
lock_type, consistent, handle,
ret_max, process_single);
if (sigint_caught())
return ret_max;
}
} else {
list_iterate_items(sl, vgnames) {
vg_name = sl->str;
if (is_orphan_vg(vg_name))
continue; /* FIXME Unnecessary? */
ret_max = _process_one_vg(cmd, vg_name, NULL, &tags,
&arg_vgnames,
lock_type, consistent, handle,
ret_max, process_single);
if (sigint_caught())
return ret_max;
}
}
return ret_max;
}
int process_each_pv_in_vg(struct cmd_context *cmd, struct volume_group *vg,
const struct list *tags, void *handle,
process_single_pv_fn_t process_single)
{
int ret_max = ECMD_PROCESSED;
int ret = 0;
struct pv_list *pvl;
list_iterate_items(pvl, &vg->pvs) {
if (tags && !list_empty(tags) &&
!str_list_match_list(tags, &pvl->pv->tags)) {
continue;
}
if ((ret = process_single(cmd, vg, pvl->pv, handle)) > ret_max)
ret_max = ret;
if (sigint_caught())
return ret_max;
}
return ret_max;
}
static int _process_all_devs(struct cmd_context *cmd, void *handle,
int (*process_single) (struct cmd_context * cmd,
struct volume_group * vg,
struct physical_volume * pv,
void *handle))
{
struct physical_volume *pv;
struct physical_volume pv_dummy;
struct dev_iter *iter;
struct device *dev;
int ret_max = ECMD_PROCESSED;
int ret = 0;
if (!scan_vgs_for_pvs(cmd)) {
stack;
return ECMD_FAILED;
}
if (!(iter = dev_iter_create(cmd->filter, 1))) {
log_error("dev_iter creation failed");
return ECMD_FAILED;
}
while ((dev = dev_iter_get(iter))) {
if (!(pv = pv_read(cmd, dev_name(dev), NULL, NULL, 0))) {
memset(&pv_dummy, 0, sizeof(pv_dummy));
list_init(&pv_dummy.tags);
list_init(&pv_dummy.segments);
pv_dummy.dev = dev;
pv_dummy.fmt = NULL;
pv = &pv_dummy;
}
ret = process_single(cmd, NULL, pv, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
dev_iter_destroy(iter);
return ret_max;
}
int process_each_pv(struct cmd_context *cmd, int argc, char **argv,
struct volume_group *vg, uint32_t lock_type, void *handle,
int (*process_single) (struct cmd_context * cmd,
struct volume_group * vg,
struct physical_volume * pv,
void *handle))
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
int ret = 0;
struct pv_list *pvl;
struct physical_volume *pv;
struct list *pvslist, *vgnames;
struct list tags;
struct str_list *sll;
char *tagname;
int consistent = 1;
int scanned = 0;
list_init(&tags);
if (argc) {
log_verbose("Using physical volume(s) on command line");
for (; opt < argc; opt++) {
if (*argv[opt] == '@') {
tagname = argv[opt] + 1;
if (!validate_name(tagname)) {
log_error("Skipping invalid tag %s",
tagname);
if (ret_max < EINVALID_CMD_LINE)
ret_max = EINVALID_CMD_LINE;
continue;
}
if (!str_list_add(cmd->mem, &tags,
dm_pool_strdup(cmd->mem,
tagname))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
continue;
}
if (vg) {
if (!(pvl = find_pv_in_vg(vg, argv[opt]))) {
log_error("Physical Volume \"%s\" not "
"found in Volume Group "
"\"%s\"", argv[opt],
vg->name);
ret_max = ECMD_FAILED;
continue;
}
pv = pvl->pv;
} else {
if (!(pv = pv_read(cmd, argv[opt], NULL,
NULL, 1))) {
log_error("Failed to read physical "
"volume \"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
/*
* If a PV has no MDAs it may appear to be an
* orphan until the metadata is read off
* another PV in the same VG. Detecting this
* means checking every VG by scanning every
* PV on the system.
*/
if (!scanned && is_orphan(pv)) {
if (!scan_vgs_for_pvs(cmd)) {
stack;
ret_max = ECMD_FAILED;
continue;
}
scanned = 1;
if (!(pv = pv_read(cmd, argv[opt],
NULL, NULL, 1))) {
log_error("Failed to read "
"physical volume "
"\"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
}
}
ret = process_single(cmd, vg, pv, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
return ret_max;
}
if (!list_empty(&tags) && (vgnames = get_vgs(cmd, 0)) &&
!list_empty(vgnames)) {
list_iterate_items(sll, vgnames) {
if (!lock_vol(cmd, sll->str, lock_type)) {
log_error("Can't lock %s: skipping", sll->str);
continue;
}
if (!(vg = vg_read(cmd, sll->str, NULL, &consistent))) {
log_error("Volume group \"%s\" not found", sll->str);
unlock_vg(cmd, sll->str);
ret_max = ECMD_FAILED;
continue;
}
if (!consistent) {
unlock_vg(cmd, sll->str);
continue;
}
if (!vg_check_status(vg, CLUSTERED)) {
unlock_vg(cmd, sll->str);
continue;
}
ret = process_each_pv_in_vg(cmd, vg, &tags,
handle,
process_single);
unlock_vg(cmd, sll->str);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
return ret_max;
}
}
} else {
if (vg) {
log_verbose("Using all physical volume(s) in "
"volume group");
ret = process_each_pv_in_vg(cmd, vg, NULL, handle,
process_single);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
return ret_max;
} else if (arg_count(cmd, all_ARG)) {
ret = _process_all_devs(cmd, handle, process_single);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
return ret_max;
} else {
log_verbose("Scanning for physical volume names");
if (!(pvslist = get_pvs(cmd)))
return ECMD_FAILED;
list_iterate_items(pvl, pvslist) {
ret = process_single(cmd, NULL, pvl->pv,
handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
return ret_max;
}
}
}
return ret_max;
}
/*
* Determine volume group name from a logical volume name
*/
const char *extract_vgname(struct cmd_context *cmd, const char *lv_name)
{
const char *vg_name = lv_name;
char *st;
char *dev_dir = cmd->dev_dir;
int dev_dir_provided = 0;
/* Path supplied? */
if (vg_name && strchr(vg_name, '/')) {
/* Strip dev_dir (optional) */
if (*vg_name == '/') {
while (*vg_name == '/')
vg_name++;
vg_name--;
}
if (!strncmp(vg_name, dev_dir, strlen(dev_dir))) {
vg_name += strlen(dev_dir);
dev_dir_provided = 1;
while (*vg_name == '/')
vg_name++;
}
if (*vg_name == '/') {
log_error("\"%s\": Invalid path for Logical "
"Volume", lv_name);
return 0;
}
/* Require exactly one set of consecutive slashes */
if ((st = strchr(vg_name, '/')))
while (*st == '/')
st++;
if (!strchr(vg_name, '/') || strchr(st, '/')) {
log_error("\"%s\": Invalid path for Logical Volume",
lv_name);
return 0;
}
vg_name = dm_pool_strdup(cmd->mem, vg_name);
if (!vg_name) {
log_error("Allocation of vg_name failed");
return 0;
}
*strchr(vg_name, '/') = '\0';
return vg_name;
}
if (!(vg_name = default_vgname(cmd))) {
if (lv_name)
log_error("Path required for Logical Volume \"%s\"",
lv_name);
return 0;
}
return vg_name;
}
/*
* Extract default volume group name from environment
*/
char *default_vgname(struct cmd_context *cmd)
{
char *vg_path;
/* Take default VG from environment? */
vg_path = getenv("LVM_VG_NAME");
if (!vg_path)
return 0;
vg_path = skip_dev_dir(cmd, vg_path, NULL);
if (strchr(vg_path, '/')) {
log_error("Environment Volume Group in LVM_VG_NAME invalid: "
"\"%s\"", vg_path);
return 0;
}
return dm_pool_strdup(cmd->mem, vg_path);
}
/*
* Process physical extent range specifiers
*/
static int _add_pe_range(struct dm_pool *mem, const char *pvname,
struct list *pe_ranges, uint32_t start, uint32_t count)
{
struct pe_range *per;
log_debug("Adding PE range: start PE %" PRIu32 " length %" PRIu32
" on %s", start, count, pvname);
/* Ensure no overlap with existing areas */
list_iterate_items(per, pe_ranges) {
if (((start < per->start) && (start + count - 1 >= per->start))
|| ((start >= per->start) &&
(per->start + per->count - 1) >= start)) {
log_error("Overlapping PE ranges specified (%" PRIu32
"-%" PRIu32 ", %" PRIu32 "-%" PRIu32 ")"
" on %s",
start, start + count - 1, per->start,
per->start + per->count - 1, pvname);
return 0;
}
}
if (!(per = dm_pool_alloc(mem, sizeof(*per)))) {
log_error("Allocation of list failed");
return 0;
}
per->start = start;
per->count = count;
list_add(pe_ranges, &per->list);
return 1;
}
static int xstrtouint32(const char *s, char **p, int base, uint32_t *result)
{
unsigned long ul;
errno = 0;
ul = strtoul(s, p, base);
if (errno || *p == s || (uint32_t) ul != ul)
return -1;
*result = ul;
return 0;
}
static int _parse_pes(struct dm_pool *mem, char *c, struct list *pe_ranges,
const char *pvname, uint32_t size)
{
char *endptr;
uint32_t start, end;
/* Default to whole PV */
if (!c) {
if (!_add_pe_range(mem, pvname, pe_ranges, UINT32_C(0), size))
return_0;
return 1;
}
while (*c) {
if (*c != ':')
goto error;
c++;
/* Disallow :: and :\0 */
if (*c == ':' || !*c)
goto error;
/* Default to whole range */
start = UINT32_C(0);
end = size - 1;
/* Start extent given? */
if (isdigit(*c)) {
if (xstrtouint32(c, &endptr, 10, &start))
goto error;
c = endptr;
/* Just one number given? */
if (!*c || *c == ':')
end = start;
}
/* Range? */
if (*c == '-') {
c++;
if (isdigit(*c)) {
if (xstrtouint32(c, &endptr, 10, &end))
goto error;
c = endptr;
}
}
if (*c && *c != ':')
goto error;
if ((start > end) || (end > size - 1)) {
log_error("PE range error: start extent %" PRIu32 " to "
"end extent %" PRIu32, start, end);
return 0;
}
if (!_add_pe_range(mem, pvname, pe_ranges, start, end - start + 1))
return_0;
}
return 1;
error:
log_error("Physical extent parsing error at %s", c);
return 0;
}
static int _create_pv_entry(struct dm_pool *mem, struct pv_list *pvl,
char *colon, int allocatable_only, struct list *r)
{
const char *pvname;
struct pv_list *new_pvl = NULL, *pvl2;
struct list *pe_ranges;
pvname = pv_dev_name(pvl->pv);
if (allocatable_only && !(pvl->pv->status & ALLOCATABLE_PV)) {
log_error("Physical volume %s not allocatable", pvname);
return 1;
}
if (allocatable_only &&
(pvl->pv->pe_count == pvl->pv->pe_alloc_count)) {
log_err("No free extents on physical volume \"%s\"", pvname);
return 1;
}
list_iterate_items(pvl2, r)
if (pvl->pv->dev == pvl2->pv->dev) {
new_pvl = pvl2;
break;
}
if (!new_pvl) {
if (!(new_pvl = dm_pool_alloc(mem, sizeof(*new_pvl)))) {
log_err("Unable to allocate physical volume list.");
return 0;
}
memcpy(new_pvl, pvl, sizeof(*new_pvl));
if (!(pe_ranges = dm_pool_alloc(mem, sizeof(*pe_ranges)))) {
log_error("Allocation of pe_ranges list failed");
return 0;
}
list_init(pe_ranges);
new_pvl->pe_ranges = pe_ranges;
list_add(r, &new_pvl->list);
}
/* Determine selected physical extents */
if (!_parse_pes(mem, colon, new_pvl->pe_ranges, pv_dev_name(pvl->pv),
pvl->pv->pe_count))
return_0;
return 1;
}
struct list *create_pv_list(struct dm_pool *mem, struct volume_group *vg, int argc,
char **argv, int allocatable_only)
{
struct list *r;
struct pv_list *pvl;
struct list tags, arg_pvnames;
const char *pvname = NULL;
char *colon, *tagname;
int i;
/* Build up list of PVs */
if (!(r = dm_pool_alloc(mem, sizeof(*r)))) {
log_error("Allocation of list failed");
return NULL;
}
list_init(r);
list_init(&tags);
list_init(&arg_pvnames);
for (i = 0; i < argc; i++) {
if (*argv[i] == '@') {
tagname = argv[i] + 1;
if (!validate_name(tagname)) {
log_error("Skipping invalid tag %s", tagname);
continue;
}
list_iterate_items(pvl, &vg->pvs) {
if (str_list_match_item(&pvl->pv->tags,
tagname)) {
if (!_create_pv_entry(mem, pvl, NULL,
allocatable_only,
r))
return_NULL;
}
}
continue;
}
pvname = argv[i];
if ((colon = strchr(pvname, ':'))) {
if (!(pvname = dm_pool_strndup(mem, pvname,
(unsigned) (colon -
pvname)))) {
log_error("Failed to clone PV name");
return NULL;
}
}
if (!(pvl = find_pv_in_vg(vg, pvname))) {
log_err("Physical Volume \"%s\" not found in "
"Volume Group \"%s\"", pvname, vg->name);
return NULL;
}
if (!_create_pv_entry(mem, pvl, colon, allocatable_only, r))
return_NULL;
}
if (list_empty(r))
log_error("No specified PVs have space available");
return list_empty(r) ? NULL : r;
}
struct list *clone_pv_list(struct dm_pool *mem, struct list *pvsl)
{
struct list *r;
struct pv_list *pvl, *new_pvl;
/* Build up list of PVs */
if (!(r = dm_pool_alloc(mem, sizeof(*r)))) {
log_error("Allocation of list failed");
return NULL;
}
list_init(r);
list_iterate_items(pvl, pvsl) {
if (!(new_pvl = dm_pool_zalloc(mem, sizeof(*new_pvl)))) {
log_error("Unable to allocate physical volume list.");
return NULL;
}
memcpy(new_pvl, pvl, sizeof(*new_pvl));
list_add(r, &new_pvl->list);
}
return r;
}
/*
* Attempt metadata recovery
*/
struct volume_group *recover_vg(struct cmd_context *cmd, const char *vgname,
uint32_t lock_type)
{
int consistent = 1;
/* Don't attempt automatic recovery without proper locking */
if (lockingfailed())
return NULL;
lock_type &= ~LCK_TYPE_MASK;
lock_type |= LCK_WRITE;
if (!lock_vol(cmd, vgname, lock_type)) {
log_error("Can't lock %s for metadata recovery: skipping",
vgname);
return NULL;
}
return vg_read(cmd, vgname, NULL, &consistent);
}
int apply_lvname_restrictions(const char *name)
{
if (!strncmp(name, "snapshot", 8)) {
log_error("Names starting \"snapshot\" are reserved. "
"Please choose a different LV name.");
return 0;
}
if (!strncmp(name, "pvmove", 6)) {
log_error("Names starting \"pvmove\" are reserved. "
"Please choose a different LV name.");
return 0;
}
if (strstr(name, "_mlog")) {
log_error("Names including \"_mlog\" are reserved. "
"Please choose a different LV name.");
return 0;
}
if (strstr(name, "_mimage")) {
log_error("Names including \"_mimage\" are reserved. "
"Please choose a different LV name.");
return 0;
}
return 1;
}
int is_reserved_lvname(const char *name)
{
int rc, old_suppress;
old_suppress = log_suppress(2);
rc = !apply_lvname_restrictions(name);
log_suppress(old_suppress);
return rc;
}
/*
* Set members of struct vgcreate_params from cmdline.
* Do preliminary validation with arg_*() interface.
* Further, more generic validation is done in validate_vgcreate_params().
* This function is to remain in tools directory.
*/
int fill_vg_create_params(struct cmd_context *cmd,
char *vg_name, struct vgcreate_params *vp_new,
struct vgcreate_params *vp_def)
{
vp_new->vg_name = skip_dev_dir(cmd, vg_name, NULL);
vp_new->max_lv = arg_uint_value(cmd, maxlogicalvolumes_ARG,
vp_def->max_lv);
vp_new->max_pv = arg_uint_value(cmd, maxphysicalvolumes_ARG,
vp_def->max_pv);
vp_new->alloc = arg_uint_value(cmd, alloc_ARG, vp_def->alloc);
/* Units of 512-byte sectors */
vp_new->extent_size =
arg_uint_value(cmd, physicalextentsize_ARG, vp_def->extent_size);
if (arg_count(cmd, clustered_ARG))
vp_new->clustered =
!strcmp(arg_str_value(cmd, clustered_ARG,
vp_def->clustered ? "y":"n"), "y");
else
/* Default depends on current locking type */
vp_new->clustered = locking_is_clustered();
if (arg_sign_value(cmd, physicalextentsize_ARG, 0) == SIGN_MINUS) {
log_error("Physical extent size may not be negative");
return 1;
}
if (arg_sign_value(cmd, maxlogicalvolumes_ARG, 0) == SIGN_MINUS) {
log_error("Max Logical Volumes may not be negative");
return 1;
}
if (arg_sign_value(cmd, maxphysicalvolumes_ARG, 0) == SIGN_MINUS) {
log_error("Max Physical Volumes may not be negative");
return 1;
}
return 0;
}