/* 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 <stdlib.h>
#include <string.h>
#include <unistd.h>
-#include <ctype.h>
#include "daemon.h"
+#include "c-ctype.h"
#include "actions.h"
+#include "optgroups.h"
+
+int
+optgroup_lvm2_available (void)
+{
+ int r = access ("/sbin/lvm", X_OK);
+ return r == 0;
+}
/* LVM actions. Keep an eye on liblvm, although at the time
* of writing it hasn't progressed very far.
*/
-guestfs_lvm_int_pv_list *
+static char **
+convert_lvm_output (char *out, const char *prefix)
+{
+ char *p, *pend;
+ char **r = NULL;
+ int size = 0, alloc = 0;
+ int len;
+ char buf[256];
+ char *str;
+
+ p = out;
+ while (p) {
+ pend = strchr (p, '\n'); /* Get the next line of output. */
+ if (pend) {
+ *pend = '\0';
+ pend++;
+ }
+
+ while (*p && c_isspace (*p)) /* Skip any leading whitespace. */
+ p++;
+
+ /* Sigh, skip trailing whitespace too. "pvs", I'm looking at you. */
+ len = strlen (p)-1;
+ while (*p && c_isspace (p[len]))
+ p[len--] = '\0';
+
+ if (!*p) { /* Empty line? Skip it. */
+ p = pend;
+ continue;
+ }
+
+ /* Prefix? */
+ if (prefix) {
+ snprintf (buf, sizeof buf, "%s%s", prefix, p);
+ str = buf;
+ } else
+ str = p;
+
+ if (add_string (&r, &size, &alloc, str) == -1) {
+ free (out);
+ return NULL;
+ }
+
+ p = pend;
+ }
+
+ free (out);
+
+ if (add_string (&r, &size, &alloc, NULL) == -1)
+ return NULL;
+
+ sort_strings (r, size-1);
+ return r;
+}
+
+char **
+do_pvs (void)
+{
+ char *out, *err;
+ int r;
+
+ r = command (&out, &err,
+ "/sbin/lvm", "pvs", "-o", "pv_name", "--noheadings", NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (out);
+ free (err);
+ return NULL;
+ }
+
+ free (err);
+
+ return convert_lvm_output (out, NULL);
+}
+
+char **
+do_vgs (void)
+{
+ char *out, *err;
+ int r;
+
+ r = command (&out, &err,
+ "/sbin/lvm", "vgs", "-o", "vg_name", "--noheadings", NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (out);
+ free (err);
+ return NULL;
+ }
+
+ free (err);
+
+ return convert_lvm_output (out, NULL);
+}
+
+char **
+do_lvs (void)
+{
+ char *out, *err;
+ int r;
+
+ r = command (&out, &err,
+ "/sbin/lvm", "lvs",
+ "-o", "vg_name,lv_name", "--noheadings",
+ "--separator", "/", NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (out);
+ free (err);
+ return NULL;
+ }
+
+ free (err);
+
+ return convert_lvm_output (out, "/dev/");
+}
+
+/* These were so complex to implement that I ended up auto-generating
+ * the code. That code is in stubs.c, and it is generated as usual
+ * by generator.ml.
+ */
+guestfs_int_lvm_pv_list *
do_pvs_full (void)
{
return parse_command_line_pvs ();
}
-guestfs_lvm_int_vg_list *
+guestfs_int_lvm_vg_list *
do_vgs_full (void)
{
return parse_command_line_vgs ();
}
-guestfs_lvm_int_lv_list *
+guestfs_int_lvm_lv_list *
do_lvs_full (void)
{
return parse_command_line_lvs ();
}
+
+int
+do_pvcreate (const char *device)
+{
+ char *err;
+ int r;
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "pvcreate", device, NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_vgcreate (const char *volgroup, char *const *physvols)
+{
+ char *err;
+ int r, argc, i;
+ const char **argv;
+
+ argc = count_strings (physvols) + 3;
+ argv = malloc (sizeof (char *) * (argc + 1));
+ if (argv == NULL) {
+ reply_with_perror ("malloc");
+ return -1;
+ }
+ argv[0] = "/sbin/lvm";
+ argv[1] = "vgcreate";
+ argv[2] = volgroup;
+ for (i = 3; i <= argc; ++i)
+ argv[i] = physvols[i-3];
+
+ r = commandv (NULL, &err, (const char * const*) argv);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_lvcreate (const char *logvol, const char *volgroup, int mbytes)
+{
+ char *err;
+ int r;
+ char size[64];
+
+ snprintf (size, sizeof size, "%d", mbytes);
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "lvcreate",
+ "-L", size, "-n", logvol, volgroup, NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_lvresize (const char *logvol, int mbytes)
+{
+ char *err;
+ int r;
+ char size[64];
+
+ snprintf (size, sizeof size, "%d", mbytes);
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "lvresize",
+ "-L", size, logvol, NULL);
+ if (r == -1) {
+ reply_with_error ("lvresize: %s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+ return 0;
+}
+
+/* Super-dangerous command used for testing. It removes all
+ * LVs, VGs and PVs permanently.
+ */
+int
+do_lvm_remove_all (void)
+{
+ char **xs;
+ int i, r;
+ char *err;
+
+ /* Remove LVs. */
+ xs = do_lvs ();
+ if (xs == NULL)
+ return -1;
+
+ for (i = 0; xs[i] != NULL; ++i) {
+ r = command (NULL, &err, "/sbin/lvm", "lvremove", "-f", xs[i], NULL);
+ if (r == -1) {
+ reply_with_error ("lvremove: %s: %s", xs[i], err);
+ free (err);
+ free_strings (xs);
+ return -1;
+ }
+ free (err);
+ }
+ free_strings (xs);
+
+ /* Remove VGs. */
+ xs = do_vgs ();
+ if (xs == NULL)
+ return -1;
+
+ for (i = 0; xs[i] != NULL; ++i) {
+ r = command (NULL, &err, "/sbin/lvm", "vgremove", "-f", xs[i], NULL);
+ if (r == -1) {
+ reply_with_error ("vgremove: %s: %s", xs[i], err);
+ free (err);
+ free_strings (xs);
+ return -1;
+ }
+ free (err);
+ }
+ free_strings (xs);
+
+ /* Remove PVs. */
+ xs = do_pvs ();
+ if (xs == NULL)
+ return -1;
+
+ for (i = 0; xs[i] != NULL; ++i) {
+ r = command (NULL, &err, "/sbin/lvm", "pvremove", "-f", xs[i], NULL);
+ if (r == -1) {
+ reply_with_error ("pvremove: %s: %s", xs[i], err);
+ free (err);
+ free_strings (xs);
+ return -1;
+ }
+ free (err);
+ }
+ free_strings (xs);
+
+ udev_settle ();
+
+ /* There, that was easy, sorry about your data. */
+ return 0;
+}
+
+int
+do_lvremove (const char *device)
+{
+ char *err;
+ int r;
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "lvremove", "-f", device, NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_vgremove (const char *device)
+{
+ char *err;
+ int r;
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "vgremove", "-f", device, NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_pvremove (const char *device)
+{
+ char *err;
+ int r;
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "pvremove", "-ff", device, NULL);
+ if (r == -1) {
+ reply_with_error ("%s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_pvresize (const char *device)
+{
+ char *err;
+ int r;
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "pvresize", device, NULL);
+ if (r == -1) {
+ reply_with_error ("pvresize: %s: %s", device, err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+ return 0;
+}
+
+int
+do_vg_activate (int activate, char *const *volgroups)
+{
+ char *err;
+ int r, i, argc;
+ const char **argv;
+
+ argc = count_strings (volgroups) + 4;
+ argv = malloc (sizeof (char *) * (argc+1));
+ if (argv == NULL) {
+ reply_with_perror ("malloc");
+ return -1;
+ }
+
+ argv[0] = "/sbin/lvm";
+ argv[1] = "vgchange";
+ argv[2] = "-a";
+ argv[3] = activate ? "y" : "n";
+ for (i = 4; i <= argc; ++i)
+ argv[i] = volgroups[i-4];
+
+ r = commandv (NULL, &err, (const char * const*) argv);
+ if (r == -1) {
+ reply_with_error ("vgchange: %s", err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_vg_activate_all (int activate)
+{
+ char *empty[] = { NULL };
+ return do_vg_activate (activate, empty);
+}
+
+int
+do_lvrename (const char *logvol, const char *newlogvol)
+{
+ char *err;
+ int r;
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "lvrename",
+ logvol, newlogvol, NULL);
+ if (r == -1) {
+ reply_with_error ("lvrename: %s -> %s: %s", logvol, newlogvol, err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
+
+int
+do_vgrename (const char *volgroup, const char *newvolgroup)
+{
+ char *err;
+ int r;
+
+ r = command (NULL, &err,
+ "/sbin/lvm", "vgrename",
+ volgroup, newvolgroup, NULL);
+ if (r == -1) {
+ reply_with_error ("vgrename: %s -> %s: %s", volgroup, newvolgroup, err);
+ free (err);
+ return -1;
+ }
+
+ free (err);
+
+ udev_settle ();
+
+ return 0;
+}
git.annexia.org / libguestfs.git / blobdiff