mirror of
https://github.com/libguestfs/libguestfs.git
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85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
/* libguestfs - the guestfsd daemon
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* Copyright (C) 2011 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <string.h>
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#include <unistd.h>
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#include "daemon.h"
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#include "actions.h"
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#include "optgroups.h"
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int
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optgroup_btrfs_available (void)
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{
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return prog_exists ("btrfs");
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}
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/* Takes optional arguments, consult optargs_bitmask. */
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int
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do_btrfs_filesystem_resize (const char *filesystem, int64_t size)
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{
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char *buf;
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char *err;
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int r;
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const char *argv[16];
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size_t i = 0;
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char size_str[32];
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argv[i++] = "btrfs";
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argv[i++] = "filesystem";
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argv[i++] = "resize";
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if (optargs_bitmask & GUESTFS_BTRFS_FILESYSTEM_RESIZE_SIZE_BITMASK) {
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if (size <= 0) {
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reply_with_error ("size is zero or negative");
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return -1;
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}
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snprintf (size_str, sizeof size_str, "%" PRIi64, size);
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argv[i++] = size_str;
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}
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else
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argv[i++] = "max";
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buf = sysroot_path (filesystem);
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if (!buf) {
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reply_with_error ("malloc");
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return -1;
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}
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argv[i++] = buf;
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argv[i++] = NULL;
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r = commandv (NULL, &err, argv);
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free (buf);
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if (r == -1) {
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reply_with_error ("%s: %s", filesystem, err);
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free (err);
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return -1;
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}
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free (err);
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return 0;
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}
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