/* libguestfs - the guestfsd daemon
- * Copyright (C) 2009 Red Hat Inc.
+ * Copyright (C) 2009 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
#include <string.h>
#include <unistd.h>
-#include "../src/guestfs_protocol.h"
+#include "guestfs_protocol.h"
#include "daemon.h"
#include "actions.h"
+#include "optgroups.h"
+
+/* Confirmed this is true for Linux swap partitions from the Linux sources. */
+#define SWAP_LABEL_MAX 16
+
+/* Convenient place to test for the later version of e2fsprogs
+ * and util-linux which supports -U parameters to specify UUIDs.
+ * (Not supported in RHEL 5).
+ */
+int
+optgroup_linuxfsuuid_available (void)
+{
+ char *err;
+ int av;
+
+ /* Ignore return code - mkswap --help *will* fail. */
+ command (NULL, &err, "mkswap", "--help", NULL);
+
+ av = strstr (err, "-U") != NULL;
+ free (err);
+ return av;
+}
static int
-mkswap (char *device, const char *flag, const char *value)
+mkswap (const char *device, const char *flag, const char *value)
{
char *err;
int r;
- IS_DEVICE (device, -1);
-
if (!flag)
- r = command (NULL, &err, "/sbin/mkswap", device, NULL);
+ r = command (NULL, &err, "mkswap", "-f", device, NULL);
else
- r = command (NULL, &err, "/sbin/mkswap", flag, value, device, NULL);
+ r = command (NULL, &err, "mkswap", "-f", flag, value, device, NULL);
if (r == -1) {
- reply_with_error ("mkswap: %s", err);
+ reply_with_error ("%s", err);
free (err);
return -1;
}
}
int
-do_mkswap (char *device)
+do_mkswap (const char *device)
{
return mkswap (device, NULL, NULL);
}
int
-do_mkswap_L (char *label, char *device)
+do_mkswap_L (const char *label, const char *device)
{
+ if (strlen (label) > SWAP_LABEL_MAX) {
+ reply_with_error ("%s: Linux swap labels are limited to %d bytes",
+ label, SWAP_LABEL_MAX);
+ return -1;
+ }
+
return mkswap (device, "-L", label);
}
int
-do_mkswap_U (char *uuid, char *device)
+do_mkswap_U (const char *uuid, const char *device)
{
return mkswap (device, "-U", uuid);
}
+
+int
+do_mkswap_file (const char *path)
+{
+ char *buf;
+ int r;
+
+ buf = sysroot_path (path);
+ if (!buf) {
+ reply_with_perror ("malloc");
+ return -1;
+ }
+
+ r = mkswap (buf, NULL, NULL);
+ free (buf);
+ return r;
+}
+
+static int
+swaponoff (const char *cmd, const char *flag, const char *value)
+{
+ char *err;
+ int r;
+
+ if (!flag)
+ r = command (NULL, &err, cmd, value, NULL);
+ else
+ r = command (NULL, &err, cmd, flag, value, NULL);
+
+ if (r == -1) {
+ reply_with_error ("%s: %s", value, err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ /* Possible fix for RHBZ#516096. It probably doesn't hurt to do
+ * this in any case.
+ */
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_swapon_device (const char *device)
+{
+ return swaponoff ("swapon", NULL, device);
+}
+
+int
+do_swapoff_device (const char *device)
+{
+ return swaponoff ("swapoff", NULL, device);
+}
+
+int
+do_swapon_file (const char *path)
+{
+ char *buf;
+ int r;
+
+ buf = sysroot_path (path);
+ if (!buf) {
+ reply_with_perror ("malloc");
+ return -1;
+ }
+
+ r = swaponoff ("swapon", NULL, buf);
+ free (buf);
+ return r;
+}
+
+int
+do_swapoff_file (const char *path)
+{
+ char *buf;
+ int r;
+
+ buf = sysroot_path (path);
+ if (!buf) {
+ reply_with_perror ("malloc");
+ return -1;
+ }
+
+ r = swaponoff ("swapoff", NULL, buf);
+ free (buf);
+ return r;
+}
+
+int
+do_swapon_label (const char *label)
+{
+ if (strlen (label) > SWAP_LABEL_MAX) {
+ reply_with_error ("%s: Linux swap labels are limited to %d bytes",
+ label, SWAP_LABEL_MAX);
+ return -1;
+ }
+
+ return swaponoff ("swapon", "-L", label);
+}
+
+int
+do_swapoff_label (const char *label)
+{
+ if (strlen (label) > SWAP_LABEL_MAX) {
+ reply_with_error ("%s: Linux swap labels are limited to %d bytes",
+ label, SWAP_LABEL_MAX);
+ return -1;
+ }
+
+ return swaponoff ("swapoff", "-L", label);
+}
+
+int
+do_swapon_uuid (const char *uuid)
+{
+ return swaponoff ("swapon", "-U", uuid);
+}
+
+int
+do_swapoff_uuid (const char *uuid)
+{
+ return swaponoff ("swapoff", "-U", uuid);
+}