mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/* libguestfs - the guestfsd daemon
|
|
* Copyright (C) 2012 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 <string.h>
|
|
#include <inttypes.h>
|
|
|
|
#include "guestfs_protocol.h"
|
|
#include "daemon.h"
|
|
#include "actions.h"
|
|
#include "optgroups.h"
|
|
|
|
#define MAX_ARGS 64
|
|
|
|
GUESTFSD_EXT_CMD(str_fstrim, fstrim);
|
|
|
|
int
|
|
optgroup_fstrim_available (void)
|
|
{
|
|
return prog_exists (str_fstrim);
|
|
}
|
|
|
|
/* Takes optional arguments, consult optargs_bitmask. */
|
|
int
|
|
do_fstrim (const char *path,
|
|
int64_t offset, int64_t length, int64_t minimumfreeextent)
|
|
{
|
|
const char *argv[MAX_ARGS];
|
|
size_t i = 0;
|
|
char offset_s[64], length_s[64], mfe_s[64];
|
|
CLEANUP_FREE char *buf = NULL;
|
|
CLEANUP_FREE char *out = NULL, *err = NULL;
|
|
int r;
|
|
|
|
/* Suggested by Paolo Bonzini to fix fstrim problem.
|
|
* https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg02978.html
|
|
*/
|
|
sync_disks ();
|
|
|
|
ADD_ARG (argv, i, str_fstrim);
|
|
|
|
if ((optargs_bitmask & GUESTFS_FSTRIM_OFFSET_BITMASK)) {
|
|
if (offset < 0) {
|
|
reply_with_error ("offset < 0");
|
|
return -1;
|
|
}
|
|
|
|
snprintf (offset_s, sizeof offset_s, "%" PRIi64, offset);
|
|
ADD_ARG (argv, i, "-o");
|
|
ADD_ARG (argv, i, offset_s);
|
|
}
|
|
|
|
if ((optargs_bitmask & GUESTFS_FSTRIM_LENGTH_BITMASK)) {
|
|
if (length <= 0) {
|
|
reply_with_error ("length <= 0");
|
|
return -1;
|
|
}
|
|
|
|
snprintf (length_s, sizeof length_s, "%" PRIi64, length);
|
|
ADD_ARG (argv, i, "-l");
|
|
ADD_ARG (argv, i, length_s);
|
|
}
|
|
|
|
if ((optargs_bitmask & GUESTFS_FSTRIM_MINIMUMFREEEXTENT_BITMASK)) {
|
|
if (minimumfreeextent <= 0) {
|
|
reply_with_error ("minimumfreeextent <= 0");
|
|
return -1;
|
|
}
|
|
|
|
snprintf (mfe_s, sizeof mfe_s, "%" PRIi64, minimumfreeextent);
|
|
ADD_ARG (argv, i, "-m");
|
|
ADD_ARG (argv, i, mfe_s);
|
|
}
|
|
|
|
/* When running in debug mode, use -v, capture stdout and print it below. */
|
|
if (verbose)
|
|
ADD_ARG (argv, i, "-v");
|
|
|
|
buf = sysroot_path (path);
|
|
if (!buf) {
|
|
reply_with_error ("malloc");
|
|
return -1;
|
|
}
|
|
|
|
ADD_ARG (argv, i, buf);
|
|
ADD_ARG (argv, i, NULL);
|
|
|
|
r = commandv (&out, &err, argv);
|
|
if (r == -1) {
|
|
reply_with_error ("%s", err);
|
|
return -1;
|
|
}
|
|
|
|
if (verbose)
|
|
fprintf (stderr, "%s\n", out);
|
|
|
|
return 0;
|
|
}
|