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/* libguestfs - the guestfsd daemon
* Copyright (C) 2011 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include <unistd.h>
#include "daemon.h"
#include "actions.h"
#include "optgroups.h"
#define MAX_ARGS 64
int
optgroup_btrfs_available (void)
{
return prog_exists ("btrfs");
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_btrfs_filesystem_resize (const char *filesystem, int64_t size)
{
char *buf;
char *err;
int r;
const char *argv[MAX_ARGS];
size_t i = 0;
char size_str[32];
ADD_ARG (argv, i, "btrfs");
ADD_ARG (argv, i, "filesystem");
ADD_ARG (argv, i, "resize");
if (optargs_bitmask & GUESTFS_BTRFS_FILESYSTEM_RESIZE_SIZE_BITMASK) {
if (size <= 0) {
reply_with_error ("size is zero or negative");
return -1;
}
snprintf (size_str, sizeof size_str, "%" PRIi64, size);
ADD_ARG (argv, i, size_str);
}
else
ADD_ARG (argv, i, "max");
buf = sysroot_path (filesystem);
if (!buf) {
reply_with_error ("malloc");
return -1;
}
ADD_ARG (argv, i, buf);
ADD_ARG (argv, i, NULL);
r = commandv (NULL, &err, argv);
free (buf);
if (r == -1) {
reply_with_error ("%s: %s", filesystem, err);
free (err);
return -1;
}
free (err);
return 0;
}
/* Takes optional arguments, consult optargs_bitmask. */
int
do_mkfs_btrfs (const char *device,
int64_t allocstart, int64_t bytecount, const char *datatype,
int leafsize, const char *label, const char *metadata,
int nodesize, int sectorsize)
{
const char *argv[MAX_ARGS];
size_t i = 0;
int r;
char *err;
char allocstart_s[64];
char bytecount_s[64];
char leafsize_s[64];
char nodesize_s[64];
char sectorsize_s[64];
ADD_ARG (argv, i, "mkfs.btrfs");
/* Optional arguments. */
if (optargs_bitmask & GUESTFS_MKFS_BTRFS_ALLOCSTART_BITMASK) {
if (allocstart < 0) {
reply_with_error ("allocstart must be >= 0");
return -1;
}
snprintf (allocstart_s, sizeof allocstart_s, "%" PRIi64, allocstart);
ADD_ARG (argv, i, "--alloc-start");
ADD_ARG (argv, i, allocstart_s);
}
if (optargs_bitmask & GUESTFS_MKFS_BTRFS_BYTECOUNT_BITMASK) {
if (bytecount <= 0) { /* actually the minimum is 256MB */
reply_with_error ("bytecount must be > 0");
return -1;
}
snprintf (bytecount_s, sizeof bytecount_s, "%" PRIi64, bytecount);
ADD_ARG (argv, i, "--byte-count");
ADD_ARG (argv, i, bytecount_s);
}
if (optargs_bitmask & GUESTFS_MKFS_BTRFS_DATATYPE_BITMASK) {
if (STRNEQ (datatype, "raid0") && STRNEQ (datatype, "raid1") &&
STRNEQ (datatype, "raid10") && STRNEQ (datatype, "single")) {
reply_with_error ("datatype not one of the allowed values");
return -1;
}
ADD_ARG (argv, i, "--data");
ADD_ARG (argv, i, datatype);
}
if (optargs_bitmask & GUESTFS_MKFS_BTRFS_LEAFSIZE_BITMASK) {
if (!is_power_of_2 (leafsize) || leafsize <= 0) {
reply_with_error ("leafsize must be > 0 and a power of two");
return -1;
}
snprintf (leafsize_s, sizeof leafsize_s, "%d", leafsize);
ADD_ARG (argv, i, "--leafsize");
ADD_ARG (argv, i, leafsize_s);
}
if (optargs_bitmask & GUESTFS_MKFS_BTRFS_LABEL_BITMASK) {
ADD_ARG (argv, i, "--label");
ADD_ARG (argv, i, label);
}
if (optargs_bitmask & GUESTFS_MKFS_BTRFS_METADATA_BITMASK) {
if (STRNEQ (metadata, "raid0") && STRNEQ (metadata, "raid1") &&
STRNEQ (metadata, "raid10") && STRNEQ (metadata, "single")) {
reply_with_error ("metadata not one of the allowed values");
return -1;
}
ADD_ARG (argv, i, "--metadata");
ADD_ARG (argv, i, metadata);
}
if (optargs_bitmask & GUESTFS_MKFS_BTRFS_NODESIZE_BITMASK) {
if (!is_power_of_2 (nodesize) || nodesize <= 0) {
reply_with_error ("nodesize must be > 0 and a power of two");
return -1;
}
snprintf (nodesize_s, sizeof nodesize_s, "%d", nodesize);
ADD_ARG (argv, i, "--nodesize");
ADD_ARG (argv, i, nodesize_s);
}
if (optargs_bitmask & GUESTFS_MKFS_BTRFS_SECTORSIZE_BITMASK) {
if (!is_power_of_2 (sectorsize) || sectorsize <= 0) {
reply_with_error ("sectorsize must be > 0 and a power of two");
return -1;
}
snprintf (sectorsize_s, sizeof sectorsize_s, "%d", sectorsize);
ADD_ARG (argv, i, "--sectorsize");
ADD_ARG (argv, i, sectorsize_s);
}
ADD_ARG (argv, i, device);
ADD_ARG (argv, i, NULL);
r = commandv (NULL, &err, argv);
if (r == -1) {
reply_with_error ("%s: %s", device, err);
free (err);
return -1;
}
free (err);
return 0;
}
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