mirror of
https://github.com/libguestfs/libguestfs.git
synced 2026-03-22 07:03:38 +00:00
e9c3711310
The RPC stubs already prefix the command name to error messages.
The daemon doesn't have to do this. As a (small) benefit this also
makes the daemon slightly smaller.
Code in the daemon such as:
if (argv[0] == NULL) {
reply_with_error ("passed an empty list");
return NULL;
}
now results in error messages like this:
><fs> command ""
libguestfs: error: command: passed an empty list
(whereas previously you would have seen ..command: command:..)
197 lines
3.6 KiB
C
197 lines
3.6 KiB
C
/* libguestfs - the guestfsd daemon
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* Copyright (C) 2009 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., 675 Mass Ave, Cambridge, MA 02139, 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 <unistd.h>
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#include "../src/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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/* Convenient place to test for the later version of e2fsprogs
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* and util-linux which supports -U parameters to specify UUIDs.
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* (Not supported in RHEL 5).
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*/
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int
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optgroup_linuxfsuuid_available (void)
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{
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char *err;
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int av;
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/* Ignore return code - mkswap --help *will* fail. */
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command (NULL, &err, "/sbin/mkswap", "--help", NULL);
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av = strstr (err, "-U") != NULL;
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free (err);
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return av;
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}
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static int
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mkswap (const char *device, const char *flag, const char *value)
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{
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char *err;
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int r;
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if (!flag)
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r = command (NULL, &err, "/sbin/mkswap", "-f", device, NULL);
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else
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r = command (NULL, &err, "/sbin/mkswap", "-f", flag, value, device, NULL);
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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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int
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do_mkswap (const char *device)
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{
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return mkswap (device, NULL, NULL);
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}
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int
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do_mkswap_L (const char *label, const char *device)
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{
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return mkswap (device, "-L", label);
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}
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int
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do_mkswap_U (const char *uuid, const char *device)
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{
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return mkswap (device, "-U", uuid);
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}
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int
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do_mkswap_file (const char *path)
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{
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char *buf;
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int r;
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buf = sysroot_path (path);
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if (!buf) {
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reply_with_perror ("malloc");
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return -1;
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}
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r = mkswap (buf, NULL, NULL);
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free (buf);
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return r;
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}
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static int
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swaponoff (const char *cmd, const char *flag, const char *value)
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{
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char *err;
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int r;
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if (!flag)
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r = command (NULL, &err, cmd, value, NULL);
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else
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r = command (NULL, &err, cmd, flag, value, NULL);
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if (r == -1) {
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reply_with_error ("%s: %s", value, 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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int
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do_swapon_device (const char *device)
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{
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return swaponoff ("/sbin/swapon", NULL, device);
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}
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int
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do_swapoff_device (const char *device)
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{
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return swaponoff ("/sbin/swapoff", NULL, device);
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}
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int
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do_swapon_file (const char *path)
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{
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char *buf;
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int r;
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buf = sysroot_path (path);
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if (!buf) {
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reply_with_perror ("malloc");
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return -1;
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}
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r = swaponoff ("/sbin/swapon", NULL, buf);
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free (buf);
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return r;
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}
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int
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do_swapoff_file (const char *path)
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{
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char *buf;
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int r;
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buf = sysroot_path (path);
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if (!buf) {
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reply_with_perror ("malloc");
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return -1;
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}
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r = swaponoff ("/sbin/swapoff", NULL, buf);
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free (buf);
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return r;
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}
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int
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do_swapon_label (const char *label)
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{
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return swaponoff ("/sbin/swapon", "-L", label);
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}
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int
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do_swapoff_label (const char *label)
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{
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return swaponoff ("/sbin/swapoff", "-L", label);
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}
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int
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do_swapon_uuid (const char *uuid)
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{
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return swaponoff ("/sbin/swapon", "-U", uuid);
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}
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int
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do_swapoff_uuid (const char *uuid)
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{
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return swaponoff ("/sbin/swapoff", "-U", uuid);
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}
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