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/*
* Copyright (C) 2002 Sistina Software
*
* This file is released under the GPL.
*
*/
/*
* Changelog
*
* 05/02/2002 - First drop [HM]
*/
#include "tools.h"
int _get_max_dev_name_len(struct dev_filter *filter);
void _count(struct device *, int *, int *);
void _print(struct device *, uint64_t, char *);
int _check_device(struct device *);
int disks_found = 0;
int parts_found = 0;
int pv_disks_found = 0;
int pv_parts_found = 0;
int max_len;
int lvmdiskscan(struct cmd_context *cmd, int argc, char **argv)
{
uint64_t size;
struct dev_iter *iter;
struct device *dev;
struct physical_volume *pv;
if (arg_count(cmd, lvmpartition_ARG))
log_print("WARNING: only considering LVM devices");
max_len = _get_max_dev_name_len(cmd->filter);
if (!(iter = dev_iter_create(cmd->filter))) {
log_error("dev_iter_create failed");
return 0;
}
/* Do scan */
for (dev = dev_iter_get(iter); dev; dev = dev_iter_get(iter)) {
/* Try if it is a PV first */
if ((pv = cmd->fid->ops->pv_read(cmd->fid, dev_name(dev)))) {
if (!dev_get_size(dev, &size)) {
log_error("Couldn't get size of \"%s\"",
dev_name(dev));
continue;
}
_print(dev, size, "LVM physical volume");
_count(dev, &pv_disks_found, &pv_parts_found);
continue;
}
/* If user just wants PVs we are done */
if (arg_count(cmd, lvmpartition_ARG))
continue;
/* What other device is it? */
if (!_check_device(dev))
continue;
}
dev_iter_destroy(iter);
/* Display totals */
if (!arg_count(cmd, lvmpartition_ARG)) {
log_print("%d disk%s",
disks_found, disks_found == 1 ? "" : "s");
log_print("%d partition%s",
parts_found, parts_found == 1 ? "" : "s");
}
log_print("%d LVM physical volume whole disk%s",
pv_disks_found, pv_disks_found == 1 ? "" : "s");
log_print("%d LVM physical volume%s",
pv_parts_found, pv_parts_found == 1 ? "" : "s");
return 0;
}
int _check_device(struct device *dev)
{
char buffer;
uint64_t size;
if (!dev_open(dev, 0)) {
return 0;
}
if (dev_read(dev, 0, 1, &buffer) != 1) {
dev_close(dev);
return 0;
}
if (!dev_get_size(dev, &size)) {
log_error("Couldn't get size of \"%s\"", dev_name(dev));
}
_print(dev, size, NULL);
_count(dev, &disks_found, &parts_found);
if (!dev_close(dev)) {
log_error("dev_close on \"%s\" failed", dev_name(dev));
return 0;
}
return 1;
}
int _get_max_dev_name_len(struct dev_filter *filter)
{
int len = 0;
int max_len = 0;
struct dev_iter *iter;
struct device *dev;
if (!(iter = dev_iter_create(filter))) {
log_error("dev_iter_create failed");
return 0;
}
/* Do scan */
for (dev = dev_iter_get(iter); dev; dev = dev_iter_get(iter)) {
len = strlen(dev_name(dev));
if (len > max_len)
max_len = len;
}
dev_iter_destroy(iter);
return max_len;
}
void _count(struct device *dev, int *disks, int *parts)
{
int c = dev_name(dev)[strlen(dev_name(dev)) - 1];
if (!isdigit(c))
(*disks)++;
else
(*parts)++;
}
void _print(struct device *dev, uint64_t size, char *what)
{
char *dummy = display_size(size / 2, SIZE_SHORT);
const char *name = dev_name(dev);
if (!what) {
what = "";
}
log_print("%-*s [%15s] %s", max_len, name, dummy, what);
dbg_free(dummy);
}
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