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-rw-r--r--src/shared/generator.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/src/shared/generator.c b/src/shared/generator.c
new file mode 100644
index 0000000000..49647c1ab6
--- /dev/null
+++ b/src/shared/generator.c
@@ -0,0 +1,84 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <unistd.h>
+
+#include "util.h"
+#include "special.h"
+#include "mkdir.h"
+#include "unit-name.h"
+#include "generator.h"
+
+int generator_write_fsck_deps(
+ FILE *f,
+ const char *dest,
+ const char *what,
+ const char *where,
+ const char *type) {
+
+ assert(f);
+
+ if (!is_device_path(what)) {
+ log_warning("Checking was requested for \"%s\", but it is not a device.", what);
+ return 0;
+ }
+
+ if (type && !streq(type, "auto")) {
+ const char *checker;
+ int r;
+
+ checker = strappenda("/sbin/fsck.", type);
+ r = access(checker, X_OK);
+ if (r < 0) {
+ log_warning("Checking was requested for %s, but %s cannot be used: %m", what, checker);
+
+ /* treat missing check as essentially OK */
+ return errno == ENOENT ? 0 : -errno;
+ }
+ }
+
+ if (streq(where, "/")) {
+ char *lnk;
+
+ lnk = strappenda(dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/systemd-fsck-root.service");
+
+ mkdir_parents(lnk, 0755);
+ if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-fsck-root.service", lnk) < 0) {
+ log_error("Failed to create symlink %s: %m", lnk);
+ return -errno;
+ }
+
+ } else {
+ _cleanup_free_ char *fsck = NULL;
+
+ fsck = unit_name_from_path_instance("systemd-fsck", what, ".service");
+ if (!fsck)
+ return log_oom();
+
+ fprintf(f,
+ "RequiresOverridable=%s\n"
+ "After=%s\n",
+ fsck,
+ fsck);
+ }
+
+ return 0;
+}