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https://github.com/libguestfs/libguestfs.git
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105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/* libguestfs - the guestfsd daemon
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* Copyright (C) 2012 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 <string.h>
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#include <inttypes.h>
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#include "guestfs_protocol.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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#define MAX_ARGS 64
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GUESTFSD_EXT_CMD(str_fstrim, fstrim);
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int
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optgroup_fstrim_available (void)
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{
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return prog_exists (str_fstrim);
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}
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/* Takes optional arguments, consult optargs_bitmask. */
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int
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do_fstrim (const char *path,
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int64_t offset, int64_t length, int64_t minimumfreeextent)
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{
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const char *argv[MAX_ARGS];
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size_t i = 0;
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char offset_s[64], length_s[64], mfe_s[64];
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CLEANUP_FREE char *out = NULL, *err = NULL;
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int r;
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ADD_ARG (argv, i, str_fstrim);
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if ((optargs_bitmask & GUESTFS_FSTRIM_OFFSET_BITMASK)) {
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if (offset < 0) {
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reply_with_error ("offset < 0");
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return -1;
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}
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snprintf (offset_s, sizeof offset_s, "%" PRIi64, offset);
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ADD_ARG (argv, i, "-o");
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ADD_ARG (argv, i, offset_s);
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}
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if ((optargs_bitmask & GUESTFS_FSTRIM_LENGTH_BITMASK)) {
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if (length <= 0) {
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reply_with_error ("length <= 0");
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return -1;
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}
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snprintf (length_s, sizeof length_s, "%" PRIi64, length);
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ADD_ARG (argv, i, "-l");
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ADD_ARG (argv, i, length_s);
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}
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if ((optargs_bitmask & GUESTFS_FSTRIM_MINIMUMFREEEXTENT_BITMASK)) {
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if (minimumfreeextent <= 0) {
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reply_with_error ("minimumfreeextent <= 0");
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return -1;
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}
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snprintf (mfe_s, sizeof mfe_s, "%" PRIi64, minimumfreeextent);
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ADD_ARG (argv, i, "-m");
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ADD_ARG (argv, i, mfe_s);
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}
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/* When running in debug mode, use -v, capture stdout and print it below. */
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if (verbose)
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ADD_ARG (argv, i, "-v");
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ADD_ARG (argv, i, path);
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ADD_ARG (argv, i, NULL);
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r = commandv (&out, &err, argv);
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if (r == -1) {
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reply_with_error ("%s", err);
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return -1;
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}
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if (verbose)
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fprintf (stderr, "%s\n", out);
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return 0;
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}
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