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From 306dfc00aefbd35197ca30469f4b40bb120caf91 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Wed, 6 May 2015 01:09:53 -0400
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Subject: [PATCH] Generate systemd-fsck-root.service in the initramfs
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In the initrafms, generate a systemd-fsck-root.service to replace
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systemd-fsck@<sysroot-device>.service. This way, after we transition
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to the real root, systemd-fsck-root.service is marked as already done.
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This introduces an unnecessary synchronization point, because
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systemd-fsck@* is ordered after systemd-fsck-root also in the
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initramfs. In practice this shouldn't be a problem.
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https://bugzilla.redhat.com/show_bug.cgi?id=1201979
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C.f. 956eaf2b8d6c9999024705ddadc7393bc707de02.
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(cherry picked from commit 4dda4e637e4c17a14db6cd265f36f5e8a5050367)
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Cherry-picked from: 4dda4e6
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Resolves: #1222517
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---
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src/shared/generator.c | 63 +++++++++++++++++++++++++++++++++++++++---
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1 file changed, 59 insertions(+), 4 deletions(-)
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diff --git a/src/shared/generator.c b/src/shared/generator.c
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index cd37812f86..148a0b077b 100644
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--- a/src/shared/generator.c
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+++ b/src/shared/generator.c
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@@ -29,8 +29,51 @@
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#include "generator.h"
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#include "path-util.h"
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#include "fstab-util.h"
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+#include "fileio.h"
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#include "dropin.h"
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+static int write_fsck_sysroot_service(const char *dir, const char *what) {
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+ const char *unit;
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+ _cleanup_free_ char *device = NULL;
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+ _cleanup_fclose_ FILE *f = NULL;
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+
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+ unit = strjoina(dir, "/systemd-fsck-root.service");
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+ log_debug("Creating %s", unit);
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+
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+ device = unit_name_from_path(what, ".device");
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+ if (!device)
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+ return log_oom();
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+
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+ f = fopen(unit, "wxe");
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+ if (!f)
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+ return log_error_errno(errno, "Failed to create unit file %s: %m", unit);
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+
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+ fprintf(f,
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+ "# Automatically generated by %1$s\n\n"
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+ "[Unit]\n"
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+ "Documentation=man:systemd-fsck-root.service(8)\n"
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+ "Description=File System Check on %2$s\n"
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+ "DefaultDependencies=no\n"
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+ "BindsTo=%3$s\n"
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+ "After=%3$s\n"
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+ "Before=shutdown.target\n"
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+ "\n"
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+ "[Service]\n"
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+ "Type=oneshot\n"
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+ "RemainAfterExit=yes\n"
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+ "ExecStart=/usr/lib/systemd/systemd-fsck %2$s\n"
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+ "TimeoutSec=0\n",
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+ program_invocation_short_name,
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+ what,
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+ device);
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+
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+ fflush(f);
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+ if (ferror(f))
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+ return log_error_errno(errno, "Failed to write unit file %s: %m", unit);
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+
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+ return 0;
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+}
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+
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int generator_write_fsck_deps(
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FILE *f,
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const char *dir,
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@@ -69,11 +112,23 @@ int generator_write_fsck_deps(
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return log_error_errno(errno, "Failed to create symlink %s: %m", lnk);
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} else {
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- _cleanup_free_ char *fsck = NULL;
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+ _cleanup_free_ char *_fsck = NULL;
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+ const char *fsck;
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+ int r;
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+
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+ if (in_initrd() && path_equal(where, "/sysroot")) {
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+ r = write_fsck_sysroot_service(dir, what);
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+ if (r < 0)
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+ return r;
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+
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+ fsck = "systemd-fsck-root.service";
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+ } else {
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+ _fsck = unit_name_from_path_instance("systemd-fsck", what, ".service");
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+ if (!_fsck)
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+ return log_oom();
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- fsck = unit_name_from_path_instance("systemd-fsck", what, ".service");
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- if (!fsck)
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- return log_oom();
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+ fsck = _fsck;
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+ }
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fprintf(f,
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"RequiresOverridable=%1$s\n"
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