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lvm2/tools/toollib.c
Zdenek Kabelac 4e9fbb4b96 toollib: validate also name 
In validate_lvname_param() call also validate_name().
2014-10-06 15:18:05 +02:00

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/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2014 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 <sys/stat.h>
#include <signal.h>
#include <sys/wait.h>
const char *command_name(struct cmd_context *cmd)
{
return cmd->command->name;
}
static void _sigchld_handler(int sig __attribute__((unused)))
{
while (wait4(-1, NULL, WNOHANG | WUNTRACED, NULL) > 0) ;
}
/*
* returns:
* -1 if the fork failed
* 0 if the parent
* 1 if the child
*/
int become_daemon(struct cmd_context *cmd, int skip_lvm)
{
static const char devnull[] = "/dev/null";
int null_fd;
pid_t pid;
struct sigaction act = {
{_sigchld_handler},
.sa_flags = SA_NOCLDSTOP,
};
log_verbose("Forking background process: %s", cmd->cmd_line);
sigaction(SIGCHLD, &act, NULL);
if (!skip_lvm)
sync_local_dev_names(cmd); /* Flush ops and reset dm cookie */
if ((pid = fork()) == -1) {
log_error("fork failed: %s", strerror(errno));
return -1;
}
/* Parent */
if (pid > 0)
return 0;
/* Child */
if (setsid() == -1)
log_error("Background process failed to setsid: %s",
strerror(errno));
/* Set this to avoid discarding output from background process */
// #define DEBUG_CHILD
#ifndef DEBUG_CHILD
if ((null_fd = open(devnull, O_RDWR)) == -1) {
log_sys_error("open", devnull);
_exit(ECMD_FAILED);
}
if ((dup2(null_fd, STDIN_FILENO) < 0) || /* reopen stdin */
(dup2(null_fd, STDOUT_FILENO) < 0) || /* reopen stdout */
(dup2(null_fd, STDERR_FILENO) < 0)) { /* reopen stderr */
log_sys_error("dup2", "redirect");
(void) close(null_fd);
_exit(ECMD_FAILED);
}
if (null_fd > STDERR_FILENO)
(void) close(null_fd);
init_verbose(VERBOSE_BASE_LEVEL);
#endif /* DEBUG_CHILD */
strncpy(*cmd->argv, "(lvm2)", strlen(*cmd->argv));
if (!skip_lvm) {
reset_locking();
lvmcache_destroy(cmd, 1, 1);
if (!lvmcache_init())
/* FIXME Clean up properly here */
_exit(ECMD_FAILED);
}
dev_close_all();
return 1;
}
/*
* Strip dev_dir if present
*/
const char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
unsigned *dev_dir_found)
{
size_t devdir_len = strlen(cmd->dev_dir);
const char *dmdir = dm_dir() + devdir_len;
size_t dmdir_len = strlen(dmdir), vglv_sz;
char *vgname, *lvname, *layer, *vglv;
/* FIXME Do this properly */
if (*vg_name == '/')
while (vg_name[1] == '/')
vg_name++;
if (strncmp(vg_name, cmd->dev_dir, devdir_len)) {
if (dev_dir_found)
*dev_dir_found = 0;
} else {
if (dev_dir_found)
*dev_dir_found = 1;
vg_name += devdir_len;
while (*vg_name == '/')
vg_name++;
/* Reformat string if /dev/mapper found */
if (!strncmp(vg_name, dmdir, dmdir_len) && vg_name[dmdir_len + 1] == '/') {
vg_name += devdir_len + 1;
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 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 vg_name;
}
return vglv;
}
}
return vg_name;
}
/*
* Returns 1 if VG should be ignored.
*/
int ignore_vg(struct volume_group *vg, const char *vg_name, int allow_inconsistent, int *ret)
{
uint32_t read_error = vg_read_error(vg);
if (!read_error)
return 0;
if ((read_error == FAILED_INCONSISTENT) && allow_inconsistent)
return 0;
if (read_error == FAILED_NOTFOUND)
*ret = ECMD_FAILED;
else if (read_error == FAILED_CLUSTERED && vg->cmd->ignore_clustered_vgs)
log_verbose("Skipping volume group %s", vg_name);
else {
log_error("Skipping volume group %s", vg_name);
*ret = ECMD_FAILED;
}
return 1;
}
/*
* Metadata iteration functions
*/
int process_each_segment_in_pv(struct cmd_context *cmd,
struct volume_group *vg,
struct physical_volume *pv,
void *handle,
process_single_pvseg_fn_t process_single_pvseg)
{
struct pv_segment *pvseg;
struct pv_list *pvl;
const char *vg_name = NULL;
int ret_max = ECMD_PROCESSED;
int ret;
struct volume_group *old_vg = vg;
struct pv_segment _free_pv_segment = { .pv = pv };
if (is_pv(pv) && !vg && !is_orphan(pv)) {
vg_name = pv_vg_name(pv);
vg = vg_read(cmd, vg_name, NULL, 0);
if (ignore_vg(vg, vg_name, 0, &ret_max)) {
release_vg(vg);
stack;
return ret_max;
}
/*
* Replace possibly incomplete PV structure with new one
* allocated in vg_read_internal() path.
*/
if (!(pvl = find_pv_in_vg(vg, pv_dev_name(pv)))) {
log_error("Unable to find %s in volume group %s",
pv_dev_name(pv), vg_name);
unlock_and_release_vg(cmd, vg, vg_name);
return ECMD_FAILED;
}
pv = pvl->pv;
}
if (dm_list_empty(&pv->segments)) {
ret = process_single_pvseg(cmd, NULL, &_free_pv_segment, handle);
if (ret > ret_max)
ret_max = ret;
} else
dm_list_iterate_items(pvseg, &pv->segments) {
if (sigint_caught()) {
ret_max = ECMD_FAILED;
stack;
break;
}
ret = process_single_pvseg(cmd, vg, pvseg, handle);
if (ret > ret_max)
ret_max = ret;
}
if (vg_name)
unlock_vg(cmd, vg_name);
if (!old_vg)
release_vg(vg);
return ret_max;
}
int process_each_segment_in_lv(struct cmd_context *cmd,
struct logical_volume *lv,
void *handle,
process_single_seg_fn_t process_single_seg)
{
struct lv_segment *seg;
int ret_max = ECMD_PROCESSED;
int ret;
dm_list_iterate_items(seg, &lv->segments) {
if (sigint_caught())
return_ECMD_FAILED;
ret = process_single_seg(cmd, seg, handle);
if (ret > ret_max)
ret_max = ret;
}
return ret_max;
}
int process_each_pv_in_vg(struct cmd_context *cmd, struct volume_group *vg,
const struct dm_list *tagsl, void *handle,
process_single_pv_fn_t process_single_pv)
{
int ret_max = ECMD_PROCESSED;
int ret;
struct pv_list *pvl;
dm_list_iterate_items(pvl, &vg->pvs) {
if (sigint_caught())
return_ECMD_FAILED;
if (tagsl && !dm_list_empty(tagsl) &&
!str_list_match_list(tagsl, &pvl->pv->tags, NULL)) {
continue;
}
if ((ret = process_single_pv(cmd, vg, pvl->pv, handle)) > ret_max)
ret_max = ret;
}
return ret_max;
}
static int _process_all_devs(struct cmd_context *cmd, void *handle,
process_single_pv_fn_t process_single_pv)
{
struct pv_list *pvl;
struct dm_list *pvslist;
struct physical_volume *pv;
struct physical_volume pv_dummy;
struct dev_iter *iter;
struct device *dev;
int ret_max = ECMD_PROCESSED;
int ret;
lvmcache_seed_infos_from_lvmetad(cmd);
if (!(pvslist = get_pvs(cmd)))
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 (sigint_caught()) {
ret_max = ECMD_FAILED;
stack;
break;
}
memset(&pv_dummy, 0, sizeof(pv_dummy));
dm_list_init(&pv_dummy.tags);
dm_list_init(&pv_dummy.segments);
pv_dummy.dev = dev;
pv = &pv_dummy;
/* TODO use a device-indexed hash here */
dm_list_iterate_items(pvl, pvslist)
if (pvl->pv->dev == dev)
pv = pvl->pv;
ret = process_single_pv(cmd, NULL, pv, handle);
if (ret > ret_max)
ret_max = ret;
free_pv_fid(pv);
}
dev_iter_destroy(iter);
dm_list_iterate_items(pvl, pvslist)
free_pv_fid(pvl->pv);
return ret_max;
}
/*
* If the lock_type is LCK_VG_READ (used only in reporting commands),
* we lock VG_GLOBAL to enable use of metadata cache.
* This can pause alongide pvscan or vgscan process for a while.
*/
int process_each_pv(struct cmd_context *cmd, int argc, char **argv,
struct volume_group *vg, uint32_t flags,
int scan_label_only, void *handle,
process_single_pv_fn_t process_single_pv)
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
int ret;
int lock_global = !(flags & READ_WITHOUT_LOCK) && !(flags & READ_FOR_UPDATE) && !lvmetad_active();
struct pv_list *pvl;
struct physical_volume *pv;
struct dm_list *pvslist = NULL, *vgnames;
struct dm_list tagsl;
struct dm_str_list *sll;
char *at_sign, *tagname;
struct device *dev;
dm_list_init(&tagsl);
if (lock_global && !lock_vol(cmd, VG_GLOBAL, LCK_VG_READ, NULL)) {
log_error("Unable to obtain global lock.");
return ECMD_FAILED;
}
if (argc) {
log_verbose("Using physical volume(s) on command line");
for (; opt < argc; opt++) {
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
dm_unescape_colons_and_at_signs(argv[opt], NULL, &at_sign);
if (at_sign && (at_sign == argv[opt])) {
tagname = at_sign + 1;
if (!validate_tag(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, &tagsl,
dm_pool_strdup(cmd->mem,
tagname))) {
log_error("strlist allocation failed");
goto bad;
}
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 (!pvslist) {
lvmcache_seed_infos_from_lvmetad(cmd);
if (!(pvslist = get_pvs(cmd)))
goto bad;
}
if (!(dev = dev_cache_get(argv[opt], cmd->filter))) {
log_error("Failed to find device "
"\"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
pv = NULL;
dm_list_iterate_items(pvl, pvslist)
if (pvl->pv->dev == dev)
pv = pvl->pv;
if (!pv) {
log_error("Failed to find physical volume "
"\"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
}
ret = process_single_pv(cmd, vg, pv, handle);
if (ret > ret_max)
ret_max = ret;
}
if (!dm_list_empty(&tagsl) && (vgnames = get_vgnames(cmd, 1)) &&
!dm_list_empty(vgnames)) {
dm_list_iterate_items(sll, vgnames) {
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
vg = vg_read(cmd, sll->str, NULL, flags);
if (ignore_vg(vg, sll->str, 0, &ret_max)) {
release_vg(vg);
stack;
continue;
}
ret = process_each_pv_in_vg(cmd, vg, &tagsl,
handle,
process_single_pv);
if (ret > ret_max)
ret_max = ret;
unlock_and_release_vg(cmd, vg, sll->str);
}
}
} else {
if (vg) {
log_verbose("Using all physical volume(s) in "
"volume group");
ret_max = process_each_pv_in_vg(cmd, vg, NULL, handle,
process_single_pv);
} else if (arg_count(cmd, all_ARG)) {
ret_max = _process_all_devs(cmd, handle, process_single_pv);
} else {
log_verbose("Scanning for physical volume names");
lvmcache_seed_infos_from_lvmetad(cmd);
if (!(pvslist = get_pvs(cmd)))
goto bad;
dm_list_iterate_items(pvl, pvslist) {
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
ret = process_single_pv(cmd, NULL, pvl->pv,
handle);
if (ret > ret_max)
ret_max = ret;
free_pv_fid(pvl->pv);
}
}
}
out:
if (pvslist)
dm_list_iterate_items(pvl, pvslist)
free_pv_fid(pvl->pv);
if (lock_global)
unlock_vg(cmd, VG_GLOBAL);
return ret_max;
bad:
if (lock_global)
unlock_vg(cmd, VG_GLOBAL);
return ECMD_FAILED;
}
static const char *_extract_vgname(struct cmd_context *cmd, const char *lv_name,
const char **after)
{
const char *vg_name = lv_name;
char *st, *pos;
/* Strip dev_dir (optional) */
if (!(vg_name = skip_dev_dir(cmd, vg_name, NULL)))
return_0;
/* Require exactly one set of consecutive slashes */
if ((st = pos = strchr(vg_name, '/')))
while (*st == '/')
st++;
if (!st || strchr(st, '/')) {
log_error("\"%s\": Invalid path for Logical Volume",
lv_name);
return 0;
}
if (!(vg_name = dm_pool_strndup(cmd->mem, vg_name, pos - vg_name))) {
log_error("Allocation of vg_name failed.");
return 0;
}
if (after)
*after = st;
return vg_name;
}
/*
* 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;
/* Path supplied? */
if (vg_name && strchr(vg_name, '/')) {
if (!(vg_name = _extract_vgname(cmd, lv_name, NULL)))
return_NULL;
return vg_name;
}
if (!(vg_name = default_vgname(cmd))) {
if (lv_name)
log_error("Path required for Logical Volume \"%s\"",
lv_name);
return NULL;
}
return vg_name;
}
/*
* Extract default volume group name from environment
*/
char *default_vgname(struct cmd_context *cmd)
{
const 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 dm_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 */
dm_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;
dm_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 || ul > UINT32_MAX)
return 0;
*result = ul;
return 1;
}
static int _parse_pes(struct dm_pool *mem, char *c, struct dm_list *pe_ranges,
const char *pvname, uint32_t size)
{
char *endptr;
uint32_t start, end, len;
/* 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;
}
} else if (*c == '+') { /* Length? */
c++;
if (isdigit(*c)) {
if (!xstrtouint32(c, &endptr, 10, &len))
goto error;
c = endptr;
end = start + (len ? (len - 1) : 0);
}
}
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 dm_list *r)
{
const char *pvname;
struct pv_list *new_pvl = NULL, *pvl2;
struct dm_list *pe_ranges;
pvname = pv_dev_name(pvl->pv);
if (allocatable_only && !(pvl->pv->status & ALLOCATABLE_PV)) {
log_warn("Physical volume %s not allocatable.", pvname);
return 1;
}
if (allocatable_only && is_missing_pv(pvl->pv)) {
log_warn("Physical volume %s is missing.", pvname);
return 1;
}
if (allocatable_only &&
(pvl->pv->pe_count == pvl->pv->pe_alloc_count)) {
log_warn("No free extents on physical volume \"%s\".", pvname);
return 1;
}
dm_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_error("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;
}
dm_list_init(pe_ranges);
new_pvl->pe_ranges = pe_ranges;
dm_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 dm_list *create_pv_list(struct dm_pool *mem, struct volume_group *vg, int argc,
char **argv, int allocatable_only)
{
struct dm_list *r;
struct pv_list *pvl;
struct dm_list tagsl, arg_pvnames;
char *pvname = NULL;
char *colon, *at_sign, *tagname;
int i;
/* Build up list of PVs */
if (!(r = dm_pool_alloc(mem, sizeof(*r)))) {
log_error("Allocation of list failed");
return NULL;
}
dm_list_init(r);
dm_list_init(&tagsl);
dm_list_init(&arg_pvnames);
for (i = 0; i < argc; i++) {
dm_unescape_colons_and_at_signs(argv[i], &colon, &at_sign);
if (at_sign && (at_sign == argv[i])) {
tagname = at_sign + 1;
if (!validate_tag(tagname)) {
log_error("Skipping invalid tag %s", tagname);
continue;
}
dm_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 && !(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_error("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 (dm_list_empty(r))
log_error("No specified PVs have space available");
return dm_list_empty(r) ? NULL : r;
}
struct dm_list *clone_pv_list(struct dm_pool *mem, struct dm_list *pvsl)
{
struct dm_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;
}
dm_list_init(r);
dm_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));
dm_list_add(r, &new_pvl->list);
}
return r;
}
const char _pe_size_may_not_be_negative_msg[] = "Physical extent size may not be negative";
int vgcreate_params_set_defaults(struct cmd_context *cmd,
struct vgcreate_params *vp_def,
struct volume_group *vg)
{
int64_t extent_size;
if (vg) {
vp_def->vg_name = NULL;
vp_def->extent_size = vg->extent_size;
vp_def->max_pv = vg->max_pv;
vp_def->max_lv = vg->max_lv;
vp_def->alloc = vg->alloc;
vp_def->clustered = vg_is_clustered(vg);
vp_def->vgmetadatacopies = vg->mda_copies;
} else {
vp_def->vg_name = NULL;
extent_size = find_config_tree_int64(cmd,
allocation_physical_extent_size_CFG, NULL) * 2;
if (extent_size < 0) {
log_error(_pe_size_may_not_be_negative_msg);
return 0;
}
vp_def->extent_size = (uint32_t) extent_size;
vp_def->max_pv = DEFAULT_MAX_PV;
vp_def->max_lv = DEFAULT_MAX_LV;
vp_def->alloc = DEFAULT_ALLOC_POLICY;
vp_def->clustered = DEFAULT_CLUSTERED;
vp_def->vgmetadatacopies = DEFAULT_VGMETADATACOPIES;
}
return 1;
}
/*
* Set members of struct vgcreate_params from cmdline arguments.
* 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 vgcreate_params_set_from_args(struct cmd_context *cmd,
struct vgcreate_params *vp_new,
struct vgcreate_params *vp_def)
{
vp_new->vg_name = skip_dev_dir(cmd, vp_def->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 = (alloc_policy_t) 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, SIGN_NONE) == SIGN_MINUS) {
log_error(_pe_size_may_not_be_negative_msg);
return 0;
}
if (arg_uint64_value(cmd, physicalextentsize_ARG, 0) > MAX_EXTENT_SIZE) {
log_error("Physical extent size cannot be larger than %s",
display_size(cmd, (uint64_t) MAX_EXTENT_SIZE));
return 0;
}
if (arg_sign_value(cmd, maxlogicalvolumes_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Max Logical Volumes may not be negative");
return 0;
}
if (arg_sign_value(cmd, maxphysicalvolumes_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Max Physical Volumes may not be negative");
return 0;
}
if (arg_count(cmd, metadatacopies_ARG)) {
vp_new->vgmetadatacopies = arg_int_value(cmd, metadatacopies_ARG,
DEFAULT_VGMETADATACOPIES);
} else if (arg_count(cmd, vgmetadatacopies_ARG)) {
vp_new->vgmetadatacopies = arg_int_value(cmd, vgmetadatacopies_ARG,
DEFAULT_VGMETADATACOPIES);
} else {
vp_new->vgmetadatacopies = find_config_tree_int(cmd, metadata_vgmetadatacopies_CFG, NULL);
}
return 1;
}
/* Shared code for changing activation state for vgchange/lvchange */
int lv_change_activate(struct cmd_context *cmd, struct logical_volume *lv,
activation_change_t activate)
{
int r = 1;
if (lv_is_merging_origin(lv)) {
/*
* For merging origin, its snapshot must be inactive.
* If it's still active and cannot be deactivated
* activation or deactivation of origin fails!
*
* When origin is deactivated and merging snapshot is thin
* it allows to deactivate origin, but still report error,
* since the thin snapshot remains active.
*
* User could retry to deactivate it with another
* deactivation of origin, which is the only visible LV
*/
if (!deactivate_lv(cmd, find_snapshot(lv)->lv)) {
if (is_change_activating(activate)) {
log_error("Refusing to activate merging \"%s\" while snapshot \"%s\" is still active.",
lv->name, find_snapshot(lv)->lv->name);
return 0;
}
log_error("Cannot fully deactivate merging origin \"%s\" while snapshot \"%s\" is still active.",
lv->name, find_snapshot(lv)->lv->name);
r = 0; /* and continue to deactivate origin... */
}
}
if (!lv_active_change(cmd, lv, activate))
return_0;
if (background_polling() &&
is_change_activating(activate) &&
(lv_is_pvmove(lv) || lv_is_converting(lv) || lv_is_merging(lv)))
lv_spawn_background_polling(cmd, lv);
return r;
}
int lv_refresh(struct cmd_context *cmd, struct logical_volume *lv)
{
if (!cmd->partial_activation && (lv->status & PARTIAL_LV)) {
log_error("Refusing refresh of partial LV %s."
" Use '--activationmode partial' to override.",
lv->name);
return 0;
}
if (!suspend_lv(cmd, lv)) {
log_error("Failed to suspend %s.", lv->name);
return 0;
}
if (!resume_lv(cmd, lv)) {
log_error("Failed to reactivate %s.", lv->name);
return 0;
}
/*
* check if snapshot merge should be polled
* - unfortunately: even though the dev_manager will clear
* the lv's merge attributes if a merge is not possible;
* it is clearing a different instance of the lv (as
* retrieved with lv_from_lvid)
* - fortunately: polldaemon will immediately shutdown if the
* origin doesn't have a status with a snapshot percentage
*/
if (background_polling() && lv_is_merging_origin(lv) && lv_is_active_locally(lv))
lv_spawn_background_polling(cmd, lv);
return 1;
}
int vg_refresh_visible(struct cmd_context *cmd, struct volume_group *vg)
{
struct lv_list *lvl;
int r = 1;
sigint_allow();
dm_list_iterate_items(lvl, &vg->lvs) {
if (sigint_caught()) {
r = 0;
stack;
break;
}
if (lv_is_visible(lvl->lv) && !lv_refresh(cmd, lvl->lv)) {
r = 0;
stack;
}
}
sigint_restore();
return r;
}
void lv_spawn_background_polling(struct cmd_context *cmd,
struct logical_volume *lv)
{
const char *pvname;
if (lv_is_pvmove(lv) &&
(pvname = get_pvmove_pvname_from_lv_mirr(lv))) {
log_verbose("Spawning background pvmove process for %s",
pvname);
pvmove_poll(cmd, pvname, 1);
} else if (lv_is_locked(lv) &&
(pvname = get_pvmove_pvname_from_lv(lv))) {
log_verbose("Spawning background pvmove process for %s",
pvname);
pvmove_poll(cmd, pvname, 1);
}
if (lv_is_converting(lv) || lv_is_merging(lv)) {
log_verbose("Spawning background lvconvert process for %s",
lv->name);
lvconvert_poll(cmd, lv, 1);
}
}
/*
* Intial sanity checking of non-recovery related command-line arguments.
*
* Output arguments:
* pp: structure allocated by caller, fields written / validated here
*/
int pvcreate_params_validate(struct cmd_context *cmd,
int argc, char **argv,
struct pvcreate_params *pp)
{
if (!argc) {
log_error("Please enter a physical volume path");
return 0;
}
pp->yes = arg_count(cmd, yes_ARG);
pp->force = (force_t) arg_count(cmd, force_ARG);
if (arg_int_value(cmd, labelsector_ARG, 0) >= LABEL_SCAN_SECTORS) {
log_error("labelsector must be less than %lu",
LABEL_SCAN_SECTORS);
return 0;
} else {
pp->labelsector = arg_int64_value(cmd, labelsector_ARG,
DEFAULT_LABELSECTOR);
}
if (!(cmd->fmt->features & FMT_MDAS) &&
(arg_count(cmd, pvmetadatacopies_ARG) ||
arg_count(cmd, metadatasize_ARG) ||
arg_count(cmd, dataalignment_ARG) ||
arg_count(cmd, dataalignmentoffset_ARG))) {
log_error("Metadata and data alignment parameters only "
"apply to text format.");
return 0;
}
if (!(cmd->fmt->features & FMT_BAS) &&
arg_count(cmd, bootloaderareasize_ARG)) {
log_error("Bootloader area parameters only "
"apply to text format.");
return 0;
}
if (arg_count(cmd, metadataignore_ARG))
pp->metadataignore = arg_int_value(cmd, metadataignore_ARG,
DEFAULT_PVMETADATAIGNORE);
else
pp->metadataignore = find_config_tree_bool(cmd, metadata_pvmetadataignore_CFG, NULL);
if (arg_count(cmd, pvmetadatacopies_ARG) &&
!arg_int_value(cmd, pvmetadatacopies_ARG, -1) &&
pp->metadataignore) {
log_error("metadataignore only applies to metadatacopies > 0");
return 0;
}
if (arg_count(cmd, zero_ARG))
pp->zero = strcmp(arg_str_value(cmd, zero_ARG, "y"), "n");
if (arg_sign_value(cmd, dataalignment_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Physical volume data alignment may not be negative");
return 0;
}
pp->data_alignment = arg_uint64_value(cmd, dataalignment_ARG, UINT64_C(0));
if (pp->data_alignment > UINT32_MAX) {
log_error("Physical volume data alignment is too big.");
return 0;
}
if (arg_sign_value(cmd, dataalignmentoffset_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Physical volume data alignment offset may not be negative");
return 0;
}
pp->data_alignment_offset = arg_uint64_value(cmd, dataalignmentoffset_ARG, UINT64_C(0));
if (pp->data_alignment_offset > UINT32_MAX) {
log_error("Physical volume data alignment offset is too big.");
return 0;
}
if ((pp->data_alignment + pp->data_alignment_offset) &&
(pp->rp.pe_start != PV_PE_START_CALC)) {
if ((pp->data_alignment ? pp->rp.pe_start % pp->data_alignment : pp->rp.pe_start) != pp->data_alignment_offset) {
log_warn("WARNING: Ignoring data alignment %s"
" incompatible with restored pe_start value %s)",
display_size(cmd, pp->data_alignment + pp->data_alignment_offset),
display_size(cmd, pp->rp.pe_start));
pp->data_alignment = 0;
pp->data_alignment_offset = 0;
}
}
if (arg_sign_value(cmd, metadatasize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Metadata size may not be negative");
return 0;
}
if (arg_sign_value(cmd, bootloaderareasize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Bootloader area size may not be negative");
return 0;
}
pp->pvmetadatasize = arg_uint64_value(cmd, metadatasize_ARG, UINT64_C(0));
if (!pp->pvmetadatasize)
pp->pvmetadatasize = find_config_tree_int(cmd, metadata_pvmetadatasize_CFG, NULL);
pp->pvmetadatacopies = arg_int_value(cmd, pvmetadatacopies_ARG, -1);
if (pp->pvmetadatacopies < 0)
pp->pvmetadatacopies = find_config_tree_int(cmd, metadata_pvmetadatacopies_CFG, NULL);
pp->rp.ba_size = arg_uint64_value(cmd, bootloaderareasize_ARG, pp->rp.ba_size);
return 1;
}
int get_activation_monitoring_mode(struct cmd_context *cmd,
int *monitoring_mode)
{
*monitoring_mode = DEFAULT_DMEVENTD_MONITOR;
if (arg_count(cmd, monitor_ARG) &&
(arg_count(cmd, ignoremonitoring_ARG) ||
arg_count(cmd, sysinit_ARG))) {
log_error("--ignoremonitoring or --sysinit option not allowed with --monitor option");
return 0;
}
if (arg_count(cmd, monitor_ARG))
*monitoring_mode = arg_int_value(cmd, monitor_ARG,
DEFAULT_DMEVENTD_MONITOR);
else if (is_static() || arg_count(cmd, ignoremonitoring_ARG) ||
arg_count(cmd, sysinit_ARG) ||
!find_config_tree_bool(cmd, activation_monitoring_CFG, NULL))
*monitoring_mode = DMEVENTD_MONITOR_IGNORE;
return 1;
}
/*
* Read pool options from cmdline
*/
int get_pool_params(struct cmd_context *cmd,
const struct segment_type *segtype,
int *passed_args,
uint64_t *pool_metadata_size,
int *pool_metadata_spare,
uint32_t *chunk_size,
thin_discards_t *discards,
int *zero)
{
*passed_args = 0;
if (segtype_is_thin_pool(segtype) || segtype_is_thin(segtype)) {
if (arg_count(cmd, zero_ARG)) {
*passed_args |= PASS_ARG_ZERO;
*zero = strcmp(arg_str_value(cmd, zero_ARG, "y"), "n");
log_very_verbose("Setting pool zeroing: %u", *zero);
}
if (arg_count(cmd, discards_ARG)) {
*passed_args |= PASS_ARG_DISCARDS;
*discards = (thin_discards_t) arg_uint_value(cmd, discards_ARG, 0);
log_very_verbose("Setting pool discards: %s",
get_pool_discards_name(*discards));
}
}
if (arg_count(cmd, chunksize_ARG)) {
if (arg_sign_value(cmd, chunksize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Negative chunk size is invalid.");
return 0;
}
*passed_args |= PASS_ARG_CHUNK_SIZE;
*chunk_size = arg_uint_value(cmd, chunksize_ARG, 0);
log_very_verbose("Setting pool chunk size: %s",
display_size(cmd, *chunk_size));
}
if (arg_count(cmd, poolmetadatasize_ARG)) {
if (arg_sign_value(cmd, poolmetadatasize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Negative pool metadata size is invalid.");
return 0;
}
if (arg_count(cmd, poolmetadata_ARG)) {
log_error("Please specify either metadata logical volume or its size.");
return 0;
}
*passed_args |= PASS_ARG_POOL_METADATA_SIZE;
*pool_metadata_size = arg_uint64_value(cmd, poolmetadatasize_ARG,
UINT64_C(0));
} else if (arg_count(cmd, poolmetadata_ARG))
*passed_args |= PASS_ARG_POOL_METADATA_SIZE; /* fixed size */
/* TODO: default in lvm.conf ? */
*pool_metadata_spare = arg_int_value(cmd, poolmetadataspare_ARG,
DEFAULT_POOL_METADATA_SPARE);
return 1;
}
/*
* Generic stripe parameter checks.
*/
static int _validate_stripe_params(struct cmd_context *cmd, uint32_t *stripes,
uint32_t *stripe_size)
{
if (*stripes == 1 && *stripe_size) {
log_print_unless_silent("Ignoring stripesize argument with single stripe");
*stripe_size = 0;
}
if (*stripes > 1 && !*stripe_size) {
*stripe_size = find_config_tree_int(cmd, metadata_stripesize_CFG, NULL) * 2;
log_print_unless_silent("Using default stripesize %s",
display_size(cmd, (uint64_t) *stripe_size));
}
if (*stripes < 1 || *stripes > MAX_STRIPES) {
log_error("Number of stripes (%d) must be between %d and %d",
*stripes, 1, MAX_STRIPES);
return 0;
}
if (*stripes > 1 && (*stripe_size < STRIPE_SIZE_MIN ||
*stripe_size & (*stripe_size - 1))) {
log_error("Invalid stripe size %s",
display_size(cmd, (uint64_t) *stripe_size));
return 0;
}
return 1;
}
/*
* The stripe size is limited by the size of a uint32_t, but since the
* value given by the user is doubled, and the final result must be a
* power of 2, we must divide UINT_MAX by four and add 1 (to round it
* up to the power of 2)
*/
int get_stripe_params(struct cmd_context *cmd, uint32_t *stripes, uint32_t *stripe_size)
{
/* stripes_long_ARG takes precedence (for lvconvert) */
*stripes = arg_uint_value(cmd, arg_count(cmd, stripes_long_ARG) ? stripes_long_ARG : stripes_ARG, 1);
*stripe_size = arg_uint_value(cmd, stripesize_ARG, 0);
if (*stripe_size) {
if (arg_sign_value(cmd, stripesize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Negative stripesize is invalid");
return 0;
}
if (arg_uint64_value(cmd, stripesize_ARG, 0) > STRIPE_SIZE_LIMIT * 2) {
log_error("Stripe size cannot be larger than %s",
display_size(cmd, (uint64_t) STRIPE_SIZE_LIMIT));
return 0;
}
}
return _validate_stripe_params(cmd, stripes, stripe_size);
}
/* FIXME move to lib */
static int _pv_change_tag(struct physical_volume *pv, const char *tag, int addtag)
{
if (addtag) {
if (!str_list_add(pv->fmt->cmd->mem, &pv->tags, tag)) {
log_error("Failed to add tag %s to physical volume %s",
tag, pv_dev_name(pv));
return 0;
}
} else
str_list_del(&pv->tags, tag);
return 1;
}
/* Set exactly one of VG, LV or PV */
int change_tag(struct cmd_context *cmd, struct volume_group *vg,
struct logical_volume *lv, struct physical_volume *pv, int arg)
{
const char *tag;
struct arg_value_group_list *current_group;
dm_list_iterate_items(current_group, &cmd->arg_value_groups) {
if (!grouped_arg_is_set(current_group->arg_values, arg))
continue;
if (!(tag = grouped_arg_str_value(current_group->arg_values, arg, NULL))) {
log_error("Failed to get tag");
return 0;
}
if (vg && !vg_change_tag(vg, tag, arg == addtag_ARG))
return_0;
else if (lv && !lv_change_tag(lv, tag, arg == addtag_ARG))
return_0;
else if (pv && !_pv_change_tag(pv, tag, arg == addtag_ARG))
return_0;
}
return 1;
}
int process_each_label(struct cmd_context *cmd, int argc, char **argv, void *handle,
process_single_label_fn_t process_single_label)
{
struct label *label;
struct dev_iter *iter;
struct device *dev;
int ret_max = ECMD_PROCESSED;
int ret;
int opt = 0;
if (argc) {
for (; opt < argc; opt++) {
if (!(dev = dev_cache_get(argv[opt], cmd->full_filter))) {
log_error("Failed to find device "
"\"%s\"", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
if (!label_read(dev, &label, 0)) {
log_error("No physical volume label read from %s",
argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
ret = process_single_label(cmd, label, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
return ret_max;
}
if (!(iter = dev_iter_create(cmd->full_filter, 1))) {
log_error("dev_iter creation failed");
return ECMD_FAILED;
}
while ((dev = dev_iter_get(iter)))
{
if (!label_read(dev, &label, 0))
continue;
ret = process_single_label(cmd, label, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
dev_iter_destroy(iter);
return ret_max;
}
int get_and_validate_major_minor(const struct cmd_context *cmd,
const struct format_type *fmt,
int32_t *major, int32_t *minor)
{
if (strcmp(arg_str_value(cmd, persistent_ARG, "n"), "y")) {
if (arg_is_set(cmd, minor_ARG) || arg_is_set(cmd, major_ARG)) {
log_error("--major and --minor incompatible with -Mn");
return 0;
}
*major = *minor = -1;
return 1;
}
if (arg_count(cmd, minor_ARG) > 1) {
log_error("Option --minor may not be repeated.");
return 0;
}
if (arg_count(cmd, major_ARG) > 1) {
log_error("Option -j/--major may not be repeated.");
return 0;
}
if (!strncmp(cmd->kernel_vsn, "2.4.", 4)) {
/* Major is required for 2.4 */
if (!arg_is_set(cmd, major_ARG)) {
log_error("Please specify major number with "
"--major when using -My");
return 0;
}
*major = arg_int_value(cmd, major_ARG, -1);
} else {
if (arg_is_set(cmd, major_ARG)) {
log_warn("WARNING: Ignoring supplied major number - "
"kernel assigns major numbers dynamically. "
"Using major number %d instead.",
cmd->dev_types->device_mapper_major);
}
*major = cmd->dev_types->device_mapper_major;
}
if (!arg_is_set(cmd, minor_ARG)) {
log_error("Please specify minor number with --minor when using -My.");
return 0;
}
*minor = arg_int_value(cmd, minor_ARG, -1);
if (!validate_major_minor(cmd, fmt, *major, *minor))
return_0;
return 1;
}
/*
* Validate lvname parameter
*
* If it contains vgname, it is extracted from lvname.
* If there is passed vgname, it is compared whether its the same name.
*/
int validate_lvname_param(struct cmd_context *cmd, const char **vg_name,
const char **lv_name)
{
const char *vgname;
const char *lvname;
if (!lv_name || !*lv_name)
return 1; /* NULL lvname is ok */
/* If contains VG name, extract it. */
if (strchr(*lv_name, (int) '/')) {
if (!(vgname = _extract_vgname(cmd, *lv_name, &lvname)))
return_0;
if (!*vg_name)
*vg_name = vgname;
else if (strcmp(vgname, *vg_name)) {
log_error("Please use a single volume group name "
"(\"%s\" or \"%s\")", vgname, *vg_name);
return 0;
}
*lv_name = lvname;
}
if (!apply_lvname_restrictions(*lv_name))
return_0;
if (!validate_name(*lv_name)) {
log_error("Logical volume name \"%s\" is invalid.",
*lv_name);
return 0;
}
return 1;
}
struct vgnameid_list {
struct dm_list list;
const char *vg_name;
const char *vgid;
};
/*
* Extract list of VG names and list of tags from command line arguments.
*/
static int _get_arg_vgnames(struct cmd_context *cmd,
int argc, char **argv,
struct dm_list *arg_vgnames,
struct dm_list *arg_tags)
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
const char *vg_name;
log_verbose("Using volume group(s) on command line");
for (; opt < argc; opt++) {
vg_name = argv[opt];
if (*vg_name == '@') {
if (!validate_tag(vg_name + 1)) {
log_error("Skipping invalid tag: %s", vg_name);
if (ret_max < EINVALID_CMD_LINE)
ret_max = EINVALID_CMD_LINE;
continue;
}
if (!str_list_add(cmd->mem, arg_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);
if (ret_max < EINVALID_CMD_LINE)
ret_max = EINVALID_CMD_LINE;
continue;
}
if (!str_list_add(cmd->mem, arg_vgnames,
dm_pool_strdup(cmd->mem, vg_name))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
}
return ret_max;
}
/*
* FIXME Add arg to include (or not) entries with duplicate vg names?
*
* Obtain complete list of VG name/vgid pairs known on the system.
*/
static int _get_vgnameids_on_system(struct cmd_context *cmd,
struct dm_list *vgnameids_on_system)
{
struct vgnameid_list *vgnl;
struct dm_list *vgids;
struct dm_str_list *sl;
const char *vgid;
log_verbose("Finding all volume groups");
if (!lvmetad_vg_list_to_lvmcache(cmd))
stack;
/*
* Start with complete vgid list because multiple VGs might have same name.
*/
vgids = get_vgids(cmd, 0);
if (!vgids || dm_list_empty(vgids)) {
stack;
return ECMD_PROCESSED;
}
/* FIXME get_vgids() should provide these pairings directly */
dm_list_iterate_items(sl, vgids) {
if (!(vgid = sl->str))
continue;
if (!(vgnl = dm_pool_alloc(cmd->mem, sizeof(*vgnl)))) {
log_error("vgnameid_list allocation failed");
return ECMD_FAILED;
}
vgnl->vgid = dm_pool_strdup(cmd->mem, vgid);
vgnl->vg_name = lvmcache_vgname_from_vgid(cmd->mem, vgid);
dm_list_add(vgnameids_on_system, &vgnl->list);
}
return ECMD_PROCESSED;
}
static int _process_vgnameid_list(struct cmd_context *cmd, uint32_t flags,
struct dm_list *vgnameids_to_process,
struct dm_list *arg_vgnames,
struct dm_list *arg_tags, void *handle,
process_single_vg_fn_t process_single_vg)
{
struct volume_group *vg;
struct vgnameid_list *vgnl;
const char *vg_name;
const char *vg_uuid;
int ret_max = ECMD_PROCESSED;
int ret;
int process_all = 0;
/*
* If no VG names or tags were supplied, then process all VGs.
*/
if (dm_list_empty(arg_vgnames) && dm_list_empty(arg_tags))
process_all = 1;
dm_list_iterate_items(vgnl, vgnameids_to_process) {
vg_name = vgnl->vg_name;
vg_uuid = vgnl->vgid;
ret = 0;
vg = vg_read(cmd, vg_name, vg_uuid, flags);
if (ignore_vg(vg, vg_name, flags & READ_ALLOW_INCONSISTENT, &ret)) {
if (ret > ret_max)
ret_max = ret;
release_vg(vg);
stack;
continue;
}
/* Process this VG? */
if (process_all ||
(!dm_list_empty(arg_vgnames) && str_list_match_item(arg_vgnames, vg_name)) ||
(!dm_list_empty(arg_tags) && str_list_match_list(arg_tags, &vg->tags, NULL)))
ret = process_single_vg(cmd, vg_name, vg, handle);
if (vg_read_error(vg))
release_vg(vg);
else
unlock_and_release_vg(cmd, vg, vg_name);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
return ret_max;
}
/*
* Copy the contents of a str_list of VG names to a name list, filling
* in the vgid with NULL (unknown).
*/
static int _copy_str_to_vgnameid_list(struct cmd_context *cmd, struct dm_list *sll,
struct dm_list *vgnll)
{
const char *vgname;
struct dm_str_list *sl;
struct vgnameid_list *vgnl;
dm_list_iterate_items(sl, sll) {
vgname = sl->str;
vgnl = dm_pool_alloc(cmd->mem, sizeof(*vgnl));
if (!vgnl) {
log_error("vgnameid_list allocation failed");
return ECMD_FAILED;
}
vgnl->vgid = NULL;
vgnl->vg_name = dm_pool_strdup(cmd->mem, vgname);
dm_list_add(vgnll, &vgnl->list);
}
return ECMD_PROCESSED;
}
/*
* Call process_single_vg() for each VG selected by the command line arguments.
*/
int process_each_vg(struct cmd_context *cmd, int argc, char **argv,
uint32_t flags, void *handle,
process_single_vg_fn_t process_single_vg)
{
struct dm_list arg_tags; /* str_list */
struct dm_list arg_vgnames; /* str_list */
struct dm_list vgnameids_on_system; /* vgnameid_list */
struct dm_list vgnameids_to_process; /* vgnameid_list */
int enable_all_vgs = (cmd->command->flags & ALL_VGS_IS_DEFAULT);
int ret;
dm_list_init(&arg_tags);
dm_list_init(&arg_vgnames);
dm_list_init(&vgnameids_on_system);
dm_list_init(&vgnameids_to_process);
/*
* Find any VGs or tags explicitly provided on the command line.
*/
if ((ret = _get_arg_vgnames(cmd, argc, argv, &arg_vgnames, &arg_tags)) != ECMD_PROCESSED) {
stack;
return ret;
}
/*
* Obtain the complete list of VGs present on the system if it is needed because:
* any tags were supplied and need resolving; or
* no VG names were given and the command defaults to processing all VGs.
*/
if (((dm_list_empty(&arg_vgnames) && enable_all_vgs) || !dm_list_empty(&arg_tags)) &&
((ret = _get_vgnameids_on_system(cmd, &vgnameids_on_system)) != ECMD_PROCESSED)) {
stack;
return ret;
}
if (dm_list_empty(&arg_vgnames) && dm_list_empty(&vgnameids_on_system)) {
/* FIXME Should be log_print, but suppressed for reporting cmds */
log_error("No volume groups found");
return ECMD_PROCESSED;
}
/*
* If we obtained a full list of VGs on the system, we need to work through them all;
* otherwise we can merely work through the VG names provided.
*/
if (!dm_list_empty(&vgnameids_on_system))
dm_list_splice(&vgnameids_to_process, &vgnameids_on_system);
else if ((ret = _copy_str_to_vgnameid_list(cmd, &arg_vgnames, &vgnameids_to_process)) != ECMD_PROCESSED) {
stack;
return ret;
}
return _process_vgnameid_list(cmd, flags, &vgnameids_to_process,
&arg_vgnames, &arg_tags, handle, process_single_vg);
}
int process_each_lv_in_vg(struct cmd_context *cmd, struct volume_group *vg,
struct dm_list *arg_lvnames, const struct dm_list *tags_in,
void *handle, process_single_lv_fn_t process_single_lv)
{
int ret_max = ECMD_PROCESSED;
int ret = 0;
unsigned process_all = 0;
unsigned tags_supplied = 0;
unsigned lvargs_supplied = 0;
struct lv_list *lvl;
struct dm_str_list *sl;
if (!vg_check_status(vg, EXPORTED_VG))
return_ECMD_FAILED;
if (tags_in && !dm_list_empty(tags_in))
tags_supplied = 1;
if (arg_lvnames && !dm_list_empty(arg_lvnames))
lvargs_supplied = 1;
/* Process all LVs in this VG if no restrictions given
* or if VG tags match. */
if ((!tags_supplied && !lvargs_supplied) ||
(tags_supplied && str_list_match_list(tags_in, &vg->tags, NULL)))
process_all = 1;
/*
* FIXME: In case of remove it goes through deleted entries,
* but it works since entries are allocated from vg mem pool.
*/
dm_list_iterate_items(lvl, &vg->lvs) {
if (lvl->lv->status & SNAPSHOT)
continue;
/* Skip availability change for non-virt snaps when processing all LVs */
/* FIXME: pass process_all to process_single_lv() */
if (process_all && arg_count(cmd, activate_ARG) &&
lv_is_cow(lvl->lv) && !lv_is_virtual_origin(origin_from_cow(lvl->lv)))
continue;
if (lv_is_virtual_origin(lvl->lv) && !arg_count(cmd, all_ARG)) {
if (lvargs_supplied &&
str_list_match_item(arg_lvnames, lvl->lv->name))
log_print_unless_silent("Ignoring virtual origin logical volume %s.",
display_lvname(lvl->lv));
continue;
}
/*
* Only let hidden LVs through it --all was used or the LVs
* were specifically named on the command line.
*/
if (!lvargs_supplied && !lv_is_visible(lvl->lv) && !arg_count(cmd, all_ARG))
continue;
/* Only process the LV if the name matches or process_all is set or if an LV tag matches */
if (lvargs_supplied && str_list_match_item(arg_lvnames, lvl->lv->name))
/* Remove LV from list of unprocessed LV names */
str_list_del(arg_lvnames, lvl->lv->name);
else if (!process_all &&
(!tags_supplied || !str_list_match_list(tags_in, &lvl->lv->tags, NULL)))
continue;
if (sigint_caught())
return_ECMD_FAILED;
log_very_verbose("Processing LV %s in VG %s", lvl->lv->name, vg->name);
ret = process_single_lv(cmd, lvl->lv, handle);
if (ret > ret_max)
ret_max = ret;
}
if (lvargs_supplied) {
/*
* FIXME: lvm supports removal of LV with all its dependencies
* this leads to miscalculation that depends on the order of args.
*/
dm_list_iterate_items(sl, arg_lvnames) {
log_error("Failed to find logical volume \"%s/%s\"",
vg->name, sl->str);
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
}
}
return ret_max;
}
/*
* If arg is tag, add it to arg_tags
* else the arg is either vgname or vgname/lvname:
* - add the vgname of each arg to arg_vgnames
* - if arg has no lvname, add just vgname arg_lvnames,
* it represents all lvs in the vg
* - if arg has lvname, add vgname/lvname to arg_lvnames
*/
static int _get_arg_lvnames(struct cmd_context *cmd,
int argc, char **argv,
struct dm_list *arg_vgnames,
struct dm_list *arg_lvnames,
struct dm_list *arg_tags)
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
char *vglv;
size_t vglv_sz;
const char *vgname;
const char *lv_name;
const char *tmp_lv_name;
char *vgname_def;
unsigned dev_dir_found;
log_verbose("Using logical volume(s) on command line");
for (; opt < argc; opt++) {
lv_name = argv[opt];
dev_dir_found = 0;
/* Do we have a tag or vgname or lvname? */
vgname = lv_name;
if (*vgname == '@') {
if (!validate_tag(vgname + 1)) {
log_error("Skipping invalid tag %s", vgname);
continue;
}
if (!str_list_add(cmd->mem, arg_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 ((tmp_lv_name = strchr(vgname, '/'))) {
/* Must be an LV */
lv_name = tmp_lv_name;
while (*lv_name == '/')
lv_name++;
if (!(vgname = extract_vgname(cmd, vgname))) {
if (ret_max < ECMD_FAILED) {
stack;
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;
}
}
}
return ret_max;
}
static int _process_lv_vgnameid_list(struct cmd_context *cmd, uint32_t flags,
struct dm_list *vgnameids_to_process,
struct dm_list *arg_vgnames,
struct dm_list *arg_lvnames,
struct dm_list *arg_tags,
void *handle,
process_single_lv_fn_t process_single_lv)
{
struct volume_group *vg;
struct vgnameid_list *nl;
struct dm_str_list *sl;
struct dm_list *tags_arg;
struct dm_list lvnames;
const char *vg_name;
const char *vg_uuid;
const char *vgn;
const char *lvn;
int ret_max = ECMD_PROCESSED;
int ret;
dm_list_iterate_items(nl, vgnameids_to_process) {
vg_name = nl->vg_name;
vg_uuid = nl->vgid;
ret = 0;
/*
* arg_lvnames contains some elements that are just "vgname"
* which means process all lvs in the vg. Other elements
* are "vgname/lvname" which means process only the select
* lvs in the vg.
*/
tags_arg = arg_tags;
dm_list_init(&lvnames); /* LVs to be processed in this VG */
dm_list_iterate_items(sl, arg_lvnames) {
vgn = sl->str;
lvn = strchr(vgn, '/');
if (!lvn && !strcmp(vgn, vg_name)) {
/* Process all LVs in this VG */
tags_arg = NULL;
dm_list_init(&lvnames);
break;
}
if (lvn && !strncmp(vgn, vg_name, strlen(vg_name)) &&
strlen(vg_name) == (size_t) (lvn - vgn)) {
if (!str_list_add(cmd->mem, &lvnames,
dm_pool_strdup(cmd->mem, lvn + 1))) {
log_error("strlist allocation failed");
return ECMD_FAILED;
}
}
}
vg = vg_read(cmd, vg_name, vg_uuid, flags);
if (ignore_vg(vg, vg_name, flags & READ_ALLOW_INCONSISTENT, &ret)) {
if (ret > ret_max)
ret_max = ret;
release_vg(vg);
stack;
continue;
}
ret = process_each_lv_in_vg(cmd, vg, &lvnames, tags_arg,
handle, process_single_lv);
unlock_and_release_vg(cmd, vg, vg_name);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
break;
}
return ret_max;
}
/*
* Call process_single_lv() for each LV selected by the command line arguments.
*/
int process_each_lv(struct cmd_context *cmd, int argc, char **argv, uint32_t flags,
void *handle, process_single_lv_fn_t process_single_lv)
{
struct dm_list arg_tags; /* str_list */
struct dm_list arg_vgnames; /* str_list */
struct dm_list arg_lvnames; /* str_list */
struct dm_list vgnameids_on_system; /* vgnameid_list */
struct dm_list vgnameids_to_process; /* vgnameid_list */
int enable_all_vgs = (cmd->command->flags & ALL_VGS_IS_DEFAULT);
int ret;
dm_list_init(&arg_tags);
dm_list_init(&arg_vgnames);
dm_list_init(&arg_lvnames);
dm_list_init(&vgnameids_on_system);
dm_list_init(&vgnameids_to_process);
/*
* Find any LVs, VGs or tags explicitly provided on the command line.
*/
if ((ret = _get_arg_lvnames(cmd, argc, argv, &arg_vgnames, &arg_lvnames, &arg_tags) != ECMD_PROCESSED)) {
stack;
return ret;
}
/*
* Obtain the complete list of VGs present on the system if it is needed because:
* any tags were supplied and need resolving; or
* no VG names were given and the command defaults to processing all VGs.
*/
if (((dm_list_empty(&arg_vgnames) && enable_all_vgs) || !dm_list_empty(&arg_tags)) &&
(ret = _get_vgnameids_on_system(cmd, &vgnameids_on_system) != ECMD_PROCESSED)) {
stack;
return ret;
}
if (dm_list_empty(&arg_vgnames) && dm_list_empty(&vgnameids_on_system)) {
/* FIXME Should be log_print, but suppressed for reporting cmds */
log_error("No volume groups found");
return ECMD_PROCESSED;
}
/*
* If we obtained a full list of VGs on the system, we need to work through them all;
* otherwise we can merely work through the VG names provided.
*/
if (!dm_list_empty(&vgnameids_on_system))
dm_list_splice(&vgnameids_to_process, &vgnameids_on_system);
else if ((ret = _copy_str_to_vgnameid_list(cmd, &arg_vgnames, &vgnameids_to_process)) != ECMD_PROCESSED) {
stack;
return ret;
}
return _process_lv_vgnameid_list(cmd, flags, &vgnameids_to_process, &arg_vgnames, &arg_lvnames,
&arg_tags, handle, process_single_lv);
}
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