Attachment 555251 Details for Bug 837954

[patch] Patch to generate scripts/lvm2_activation_generator_systemd_red_hat.c on the fly

scripts-lvm2_activation_generator_systemd_red_hat.c.in.diff (text/plain), 9.07 KB, created by Lars Müller on 2013-08-31 19:56:16 UTC

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Creator: Lars Müller

Created: 2013-08-31 19:56:16 UTC

Size: 9.07 KB

patch

obsolete

>Index: LVM2.2.02.98/configure.in
>===================================================================
>--- LVM2.2.02.98.orig/configure.in
>+++ LVM2.2.02.98/configure.in
>@@ -1660,6 +1660,7 @@ scripts/blk_availability_init_red_hat
> scripts/blk_availability_systemd_red_hat.service
> scripts/clvmd_init_red_hat
> scripts/cmirrord_init_red_hat
>+scripts/lvm2_activation_generator_systemd_red_hat.c
> scripts/lvm2_lvmetad_init_red_hat
> scripts/lvm2_lvmetad_systemd_red_hat.socket
> scripts/lvm2_lvmetad_systemd_red_hat.service
>Index: LVM2.2.02.98/configure
>===================================================================
>--- LVM2.2.02.98.orig/configure
>+++ LVM2.2.02.98/configure
>@@ -10788,7 +10788,7 @@ LVM_LIBAPI=`echo "$VER" | $AWK -F '[()]'
> 
> 
> ################################################################################
>-ac_config_files="$ac_config_files Makefile make.tmpl daemons/Makefile daemons/clvmd/Makefile daemons/cmirrord/Makefile daemons/dmeventd/Makefile daemons/dmeventd/libdevmapper-event.pc daemons/dmeventd/plugins/Makefile daemons/dmeventd/plugins/lvm2/Makefile daemons/dmeventd/plugins/raid/Makefile daemons/dmeventd/plugins/mirror/Makefile daemons/dmeventd/plugins/snapshot/Makefile daemons/dmeventd/plugins/thin/Makefile daemons/lvmetad/Makefile doc/Makefile doc/example.conf include/.symlinks include/Makefile lib/Makefile lib/format1/Makefile lib/format_pool/Makefile lib/locking/Makefile lib/mirror/Makefile lib/replicator/Makefile lib/misc/lvm-version.h lib/raid/Makefile lib/snapshot/Makefile lib/thin/Makefile libdaemon/Makefile libdaemon/client/Makefile libdaemon/server/Makefile libdm/Makefile libdm/libdevmapper.pc liblvm/Makefile liblvm/liblvm2app.pc man/Makefile po/Makefile python/Makefile python/setup.py scripts/blkdeactivate.sh scripts/blk_availability_init_red_hat scripts/blk_availability_systemd_red_hat.service scripts/clvmd_init_red_hat scripts/cmirrord_init_red_hat scripts/lvm2_lvmetad_init_red_hat scripts/lvm2_lvmetad_systemd_red_hat.socket scripts/lvm2_lvmetad_systemd_red_hat.service scripts/lvm2_monitoring_init_red_hat scripts/dm_event_systemd_red_hat.socket scripts/dm_event_systemd_red_hat.service scripts/lvm2_monitoring_systemd_red_hat.service scripts/lvm2_tmpfiles_red_hat.conf scripts/Makefile test/Makefile test/api/Makefile test/unit/Makefile tools/Makefile udev/Makefile unit-tests/datastruct/Makefile unit-tests/regex/Makefile unit-tests/mm/Makefile"
>+ac_config_files="$ac_config_files Makefile make.tmpl daemons/Makefile daemons/clvmd/Makefile daemons/cmirrord/Makefile daemons/dmeventd/Makefile daemons/dmeventd/libdevmapper-event.pc daemons/dmeventd/plugins/Makefile daemons/dmeventd/plugins/lvm2/Makefile daemons/dmeventd/plugins/raid/Makefile daemons/dmeventd/plugins/mirror/Makefile daemons/dmeventd/plugins/snapshot/Makefile daemons/dmeventd/plugins/thin/Makefile daemons/lvmetad/Makefile doc/Makefile doc/example.conf include/.symlinks include/Makefile lib/Makefile lib/format1/Makefile lib/format_pool/Makefile lib/locking/Makefile lib/mirror/Makefile lib/replicator/Makefile lib/misc/lvm-version.h lib/raid/Makefile lib/snapshot/Makefile lib/thin/Makefile libdaemon/Makefile libdaemon/client/Makefile libdaemon/server/Makefile libdm/Makefile libdm/libdevmapper.pc liblvm/Makefile liblvm/liblvm2app.pc man/Makefile po/Makefile python/Makefile python/setup.py scripts/blkdeactivate.sh scripts/blk_availability_init_red_hat scripts/blk_availability_systemd_red_hat.service scripts/clvmd_init_red_hat scripts/cmirrord_init_red_hat scripts/lvm2_activation_generator_systemd_red_hat.c scripts/lvm2_lvmetad_init_red_hat scripts/lvm2_lvmetad_systemd_red_hat.socket scripts/lvm2_lvmetad_systemd_red_hat.service scripts/lvm2_monitoring_init_red_hat scripts/dm_event_systemd_red_hat.socket scripts/dm_event_systemd_red_hat.service scripts/lvm2_monitoring_systemd_red_hat.service scripts/lvm2_tmpfiles_red_hat.conf scripts/Makefile test/Makefile test/api/Makefile test/unit/Makefile tools/Makefile udev/Makefile unit-tests/datastruct/Makefile unit-tests/regex/Makefile unit-tests/mm/Makefile"
> 
> cat >confcache <<\_ACEOF
> # This file is a shell script that caches the results of configure
>Index: LVM2.2.02.98/scripts/lvm2_activation_generator_systemd_red_hat.c.in
>===================================================================
>--- /dev/null
>+++ LVM2.2.02.98/scripts/lvm2_activation_generator_systemd_red_hat.c.in
>@@ -0,0 +1,171 @@
>+/*
>+ * Copyright (C) 2012 Red Hat, Inc. All rights reserved.
>+ *
>+ * This file is part of the device-mapper userspace tools.
>+ *
>+ * This copyrighted material is made available to anyone wishing to use,
>+ * modify, copy, or redistribute it subject to the terms and conditions
>+ * of the GNU General Public License v.2.
>+ *
>+ * You should have received a copy of the GNU General Public License
>+ * along with this program; if not, write to the Free Software Foundation,
>+ * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
>+*/
>+
>+#include <stdio.h>
>+#include <unistd.h>
>+#include <errno.h>
>+#include <stdarg.h>
>+#include <sys/types.h>
>+#include <sys/stat.h>
>+#include <fcntl.h>
>+#include "lvm2app.h"
>+
>+#define KMSG_DEV_PATH        "/dev/kmsg"
>+#define LVM_CONF_USE_LVMETAD "global/use_lvmetad"
>+
>+#define DEFAULT_UNIT_DIR     "/tmp"
>+#define UNIT_NAME_EARLY      "lvm2-activation-early.service"
>+#define UNIT_NAME            "lvm2-activation.service"
>+#define UNIT_TARGET          "local-fs.target"
>+
>+static char unit_path[PATH_MAX];
>+static char target_path[PATH_MAX];
>+static char message[PATH_MAX];
>+static int kmsg_fd = -1;
>+
>+__attribute__ ((format(printf, 1, 2)))
>+static void kmsg(const char *format, ...)
>+{
>+	va_list ap;
>+	int n;
>+
>+	va_start(ap, format);
>+	n = vsnprintf(message, sizeof(message), format, ap);
>+	va_end(ap);
>+
>+	if (kmsg_fd < 0 || (n < 0 || ((unsigned) n + 1 > sizeof(message))))
>+		return;
>+
>+	(void) write(kmsg_fd, message, n + 1);
>+}
>+
>+static int lvm_uses_lvmetad(void)
>+{
>+	lvm_t lvm;
>+	int r;
>+
>+	if (!(lvm = lvm_init(NULL))) {
>+		kmsg("LVM: Failed to initialize library context for activation generator.\n");
>+		return 0;
>+	}
>+	r = lvm_config_find_bool(lvm, LVM_CONF_USE_LVMETAD, 0);
>+	lvm_quit(lvm);
>+
>+	return r;
>+}
>+
>+static int register_unit_with_target(const char *dir, const char *unit, const char *target)
>+{
>+	int r = 1;
>+
>+	if (dm_snprintf(target_path, PATH_MAX, "%s/%s.wants", dir, target) < 0) {
>+		r = 0; goto out;
>+	}
>+	(void) dm_prepare_selinux_context(target_path, S_IFDIR);
>+	if (mkdir(target_path, 0755) < 0 && errno != EEXIST) {
>+		kmsg("LVM: Failed to create target directory %s: %m.\n", target_path);
>+		r = 0; goto out;
>+	}
>+
>+	if (dm_snprintf(target_path, PATH_MAX, "%s/%s.wants/%s", dir, target, unit) < 0) {
>+		r = 0; goto out;
>+	}
>+	(void) dm_prepare_selinux_context(target_path, S_IFLNK);
>+	if (symlink(unit_path, target_path) < 0) {
>+		kmsg("LVM: Failed to create symlink for unit %s: %m.\n", unit);
>+		r = 0;
>+	}
>+out:
>+	dm_prepare_selinux_context(NULL, 0);
>+	return r;
>+}
>+
>+static int generate_unit(const char *dir, int early)
>+{
>+	FILE *f;
>+	const char *unit = early ? UNIT_NAME_EARLY : UNIT_NAME;
>+
>+	if (dm_snprintf(unit_path, PATH_MAX, "%s/%s", dir, unit) < 0)
>+		return 0;
>+
>+	if (!(f = fopen(unit_path, "wxe"))) {
>+		kmsg("LVM: Failed to create unit file %s: %m.\n", unit);
>+		return 0;
>+	}
>+
>+	fputs("# Automatically generated by lvm2-activation-generator.\n"
>+	      "#\n"
>+	      "# This unit is responsible for direct activation of LVM2 logical volumes\n"
>+	      "# if lvmetad daemon is not used (global/use_lvmetad=0 lvm.conf setting),\n"
>+	      "# hence volume autoactivation is not applicable.\n"
>+	      "# Direct LVM2 activation requires udev to be settled!\n\n"
>+	      "[Unit]\n"
>+	      "Description=Activation of LVM2 logical volumes\n"
>+	      "Documentation=man:lvm(8) man:vgchange(8)\n"
>+	      "SourcePath=/etc/lvm/lvm.conf\n"
>+	      "DefaultDependencies=no\n", f);
>+
>+	if (early) {
>+		fputs("After=systemd-udev-settle.service\n", f);
>+		fputs("Before=cryptsetup.target\n", f);
>+	} else
>+		fputs("After=lvm2-activation-early.service cryptsetup.target\n", f);
>+
>+	fputs("Before=local-fs.target shutdown.target\n"
>+	      "Wants=systemd-udev-settle.service\n\n"
>+	      "[Service]\n"
>+	      "ExecStart=@sbindir@/lvm vgchange -aay --sysinit\n"
>+	      "Type=oneshot\n", f);
>+
>+	if (fclose(f) < 0) {
>+		kmsg("LVM: Failed to write unit file %s: %m.\n", unit);
>+		return 0;
>+	}
>+
>+	if (!register_unit_with_target(dir, unit, UNIT_TARGET)) {
>+		kmsg("LVM: Failed to register unit %s with target %s.\n", unit, UNIT_TARGET);
>+		return 0;
>+	}
>+
>+	return 1;
>+}
>+
>+int main(int argc, char *argv[])
>+{
>+	const char *dir;
>+	int r = EXIT_SUCCESS;
>+
>+	kmsg_fd = open(KMSG_DEV_PATH, O_WRONLY|O_NOCTTY);
>+
>+	if (argc > 1 && argc != 4) {
>+		kmsg("LVM: Activation generator takes three or no arguments.\n");
>+		r = EXIT_FAILURE; goto out;
>+	}
>+
>+	/* If lvmetad used, rely on autoactivation instead of direct activation. */
>+	if (lvm_uses_lvmetad()) {
>+		kmsg("LVM: Logical Volume autoactivation enabled.\n");
>+		goto out;
>+	}
>+
>+	dir = argc > 1 ? argv[1] : DEFAULT_UNIT_DIR;
>+
>+	if (!generate_unit(dir, 1) || !generate_unit(dir, 0))
>+		r = EXIT_FAILURE;
>+out:
>+	kmsg("LVM: Activation generator %s.\n", r ? "failed" : "successfully completed");
>+	if (kmsg_fd != -1)
>+		(void) close(kmsg_fd);
>+	return r;
>+}

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Attachments on bug 837954: 555249 | 555250 | 555251