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/* libguestfs - the guestfsd daemon
* Copyright (C) 2009 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 <string.h>
#include <unistd.h>
#include <ctype.h>
#include "daemon.h"
#include "actions.h"
/* LVM actions. Keep an eye on liblvm, although at the time
* of writing it hasn't progressed very far.
*/
static char **
convert_lvm_output (char *out, char *prefix)
{
char *p, *pend;
char **r = NULL;
int size = 0, alloc = 0;
int len;
char buf[256];
char *str;
p = out;
while (p) {
pend = strchr (p, '\n'); /* Get the next line of output. */
if (pend) {
*pend = '\0';
pend++;
}
while (*p && isspace (*p)) /* Skip any leading whitespace. */
p++;
/* Sigh, skip trailing whitespace too. "pvs", I'm looking at you. */
len = strlen (p)-1;
while (*p && isspace (p[len]))
p[len--] = '\0';
if (!*p) { /* Empty line? Skip it. */
p = pend;
continue;
}
/* Prefix? */
if (prefix) {
snprintf (buf, sizeof buf, "%s%s", prefix, p);
str = buf;
} else
str = p;
if (add_string (&r, &size, &alloc, str) == -1) {
free (out);
return NULL;
}
p = pend;
}
free (out);
if (add_string (&r, &size, &alloc, NULL) == -1)
return NULL;
sort_strings (r, size-1);
return r;
}
char **
do_pvs (void)
{
char *out, *err;
int r;
r = command (&out, &err,
"/sbin/lvm", "pvs", "-o", "pv_name", "--noheadings", NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (out);
free (err);
return NULL;
}
free (err);
return convert_lvm_output (out, NULL);
}
char **
do_vgs (void)
{
char *out, *err;
int r;
r = command (&out, &err,
"/sbin/lvm", "vgs", "-o", "vg_name", "--noheadings", NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (out);
free (err);
return NULL;
}
free (err);
return convert_lvm_output (out, NULL);
}
char **
do_lvs (void)
{
char *out, *err;
int r;
r = command (&out, &err,
"/sbin/lvm", "lvs",
"-o", "vg_name,lv_name", "--noheadings",
"--separator", "/", NULL);
if (r == -1) {
reply_with_error ("%s", err);
free (out);
free (err);
return NULL;
}
free (err);
return convert_lvm_output (out, "/dev/");
}
/* These were so complex to implement that I ended up auto-generating
* the code. That code is in stubs.c, and it is generated as usual
* by generator.ml.
*/
guestfs_lvm_int_pv_list *
do_pvs_full (void)
{
return parse_command_line_pvs ();
}
guestfs_lvm_int_vg_list *
do_vgs_full (void)
{
return parse_command_line_vgs ();
}
guestfs_lvm_int_lv_list *
do_lvs_full (void)
{
return parse_command_line_lvs ();
}
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