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/* virt-df
* Copyright (C) 2010 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <xvasprintf.h>
#include <math.h>
#include <assert.h>
#ifdef HAVE_LIBVIRT
#include <libvirt/libvirt.h>
#include <libvirt/virterror.h>
#endif
#include "c-ctype.h"
#include "human.h"
#include "progname.h"
#include "guestfs.h"
#include "options.h"
#include "virt-df.h"
static void write_csv_field (const char *field);
void
print_title (void)
{
const char *cols[6];
cols[0] = _("VirtualMachine");
cols[1] = _("Filesystem");
if (!inodes) {
if (!human)
cols[2] = _("1K-blocks");
else
cols[2] = _("Size");
cols[3] = _("Used");
cols[4] = _("Available");
cols[5] = _("Use%");
} else {
cols[2] = _("Inodes");
cols[3] = _("IUsed");
cols[4] = _("IFree");
cols[5] = _("IUse%");
}
if (!csv) {
/* ignore cols[0] in this mode */
printf ("%-36s%10s %10s %10s %5s\n",
cols[1], cols[2], cols[3], cols[4], cols[5]);
}
else {
size_t i;
for (i = 0; i < 6; ++i) {
if (i > 0)
putchar (',');
write_csv_field (cols[i]);
}
putchar ('\n');
}
}
static void canonical_device (char *dev, int offset);
void
print_stat (const char *name, const char *uuid_param,
const char *dev_param, int offset,
const struct guestfs_statvfs *stat)
{
/* First two columns are always 'name' and 'dev', followed by four
* other data columns. In text mode the 'name' and 'dev' are
* combined into a single 'name:dev' column. In CSV mode they are
* kept as two separate columns. In UUID mode the name might be
* replaced by 'uuid', if available.
*/
#define MAX_LEN (LONGEST_HUMAN_READABLE > 128 ? LONGEST_HUMAN_READABLE : 128)
char buf[4][MAX_LEN];
const char *cols[4];
int64_t factor, v;
float percent;
int hopts = human_round_to_nearest|human_autoscale|human_base_1024|human_SI;
size_t i, len;
/* Make the device canonical. */
len = strlen (dev_param) + 1;
char dev[len];
strcpy (dev, dev_param);
if (offset >= 0)
canonical_device (dev, offset);
if (!inodes) { /* 1K blocks */
if (!human) {
factor = stat->bsize / 1024;
v = stat->blocks * factor;
snprintf (buf[0], MAX_LEN, "%" PRIi64, v);
cols[0] = buf[0];
v = (stat->blocks - stat->bfree) * factor;
snprintf (buf[1], MAX_LEN, "%" PRIi64, v);
cols[1] = buf[1];
v = stat->bavail * factor;
snprintf (buf[2], MAX_LEN, "%" PRIi64, v);
cols[2] = buf[2];
} else {
cols[0] =
human_readable ((uintmax_t) stat->blocks, buf[0],
hopts, stat->bsize, 1);
v = stat->blocks - stat->bfree;
cols[1] =
human_readable ((uintmax_t) v, buf[1], hopts, stat->bsize, 1);
cols[2] =
human_readable ((uintmax_t) stat->bavail, buf[2],
hopts, stat->bsize, 1);
}
if (stat->blocks != 0)
percent = 100. - 100. * stat->bfree / stat->blocks;
else
percent = 0;
}
else { /* inodes */
snprintf (buf[0], MAX_LEN, "%" PRIi64, stat->files);
cols[0] = buf[0];
snprintf (buf[1], MAX_LEN, "%" PRIi64, stat->files - stat->ffree);
cols[1] = buf[1];
snprintf (buf[2], MAX_LEN, "%" PRIi64, stat->ffree);
cols[2] = buf[2];
if (stat->files != 0)
percent = 100. - 100. * stat->ffree / stat->files;
else
percent = 0;
}
if (!csv)
/* Use 'ceil' on the percentage in order to emulate what df itself does. */
snprintf (buf[3], MAX_LEN, "%3.0f%%", ceil (percent));
else
snprintf (buf[3], MAX_LEN, "%.1f", percent);
cols[3] = buf[3];
#undef MAX_LEN
if (uuid && uuid_param)
name = uuid_param;
if (!csv) {
len = strlen (name) + strlen (dev) + 1;
printf ("%s:%s", name, dev);
if (len <= 36) {
for (i = len; i < 36; ++i)
putchar (' ');
} else {
printf ("\n ");
}
printf ("%10s %10s %10s %5s\n", cols[0], cols[1], cols[2], cols[3]);
}
else {
write_csv_field (name);
putchar (',');
write_csv_field (dev);
for (i = 0; i < 4; ++i) {
putchar (',');
write_csv_field (cols[i]);
}
putchar ('\n');
}
}
/* /dev/vda1 -> /dev/sda, adjusting the device offset. */
static void
canonical_device (char *dev, int offset)
{
if (STRPREFIX (dev, "/dev/") &&
(dev[5] == 'h' || dev[5] == 'v') &&
dev[6] == 'd' &&
c_isalpha (dev[7]) &&
(c_isdigit (dev[8]) || dev[8] == '\0')) {
dev[5] = 's';
dev[7] -= offset;
}
}
/* Function to quote CSV fields on output without requiring an
* external module.
*/
static void
write_csv_field (const char *field)
{
size_t i, len;
int needs_quoting = 0;
len = strlen (field);
for (i = 0; i < len; ++i) {
if (field[i] == ' ' || field[i] == '"' ||
field[i] == '\n' || field[i] == ',') {
needs_quoting = 1;
break;
}
}
if (!needs_quoting) {
printf ("%s", field);
return;
}
/* Quoting for CSV fields. */
putchar ('"');
for (i = 0; i < len; ++i) {
if (field[i] == '"') {
putchar ('"');
putchar ('"');
} else
putchar (field[i]);
}
putchar ('"');
}
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