mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-21 22:53:37 +00:00
0306c98d31
guestfsd calls many different tools. Keeping track of all of them is error prone. This patch introduces a new helper macro to put the command string into its own ELF section: GUESTFSD_EXT_CMD(C_variable, command_name); This syntax makes it still possible to grep for used command names. The actual usage of the collected list could be like this: objcopy -j .guestfsd_ext_cmds -O binary daemon/guestfsd /dev/stdout | tr '\0' '\n' | sort -u The resulting output will be used to tell mkinitrd which programs to copy into the initrd. Signed-off-by: Olaf Hering <olaf@aepfle.de> RWMJ: - Move str_vgchange at request of author. - Fix snprintf call in daemon/debug.c
100 lines
2.4 KiB
C
100 lines
2.4 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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char *err;
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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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ADD_ARG (argv, i, path);
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ADD_ARG (argv, i, NULL);
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r = commandv (NULL, &err, argv);
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if (r == -1) {
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reply_with_error ("%s", 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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