Add SPDX license identifiers to source files under the LGPL

[thirdparty/systemd.git] / src / shared / generator.c

diff --git a/src/shared/generator.c b/src/shared/generator.c
index 0a8e282949e16d3107c2b6e9e5a93e9453c022de..a9670213d4f62d99accb6da48254a4911cde5e53 100644 (file)
--- a/src/shared/generator.c
+++ b/src/shared/generator.c
@@ -1,5 +1,4 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /***
   This file is part of systemd.
 
@@ -19,21 +18,42 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <errno.h>
 #include <unistd.h>
 
+#include "alloc-util.h"
 #include "dropin.h"
 #include "escape.h"
 #include "fd-util.h"
 #include "fileio.h"
 #include "fstab-util.h"
 #include "generator.h"
+#include "log.h"
+#include "macro.h"
 #include "mkdir.h"
 #include "path-util.h"
 #include "special.h"
 #include "string-util.h"
+#include "time-util.h"
 #include "unit-name.h"
 #include "util.h"
 
+int generator_add_symlink(const char *root, const char *dst, const char *dep_type, const char *src) {
+        /* Adds a symlink from <dst>.<dep_type>.d/ to ../<src> */
+
+        const char *from, *to;
+
+        from = strjoina("../", src);
+        to = strjoina(root, "/", dst, ".", dep_type, "/", src);
+
+        mkdir_parents_label(to, 0755);
+        if (symlink(from, to) < 0)
+                if (errno != EEXIST)
+                        return log_error_errno(errno, "Failed to create symlink \"%s\": %m", to);
+
+        return 0;
+}
+
 static int write_fsck_sysroot_service(const char *dir, const char *what) {
         _cleanup_free_ char *device = NULL, *escaped = NULL;
         _cleanup_fclose_ FILE *f = NULL;
@@ -62,7 +82,7 @@ static int write_fsck_sysroot_service(const char *dir, const char *what) {
                 "Description=File System Check on %2$s\n"
                 "DefaultDependencies=no\n"
                 "BindsTo=%3$s\n"
-                "After=%3$s\n"
+                "After=initrd-root-device.target local-fs-pre.target %3$s\n"
                 "Before=shutdown.target\n"
                 "\n"
                 "[Service]\n"
@@ -140,7 +160,7 @@ int generator_write_fsck_deps(
                 }
 
                 fprintf(f,
-                        "RequiresOverridable=%1$s\n"
+                        "Requires=%1$s\n"
                         "After=%1$s\n",
                         fsck);
         }
@@ -164,12 +184,13 @@ int generator_write_timeouts(
         usec_t u;
         int r;
 
-        r = fstab_filter_options(opts, "comment=systemd.device-timeout\0" "x-systemd.device-timeout\0",
+        r = fstab_filter_options(opts, "comment=systemd.device-timeout\0"
+                                       "x-systemd.device-timeout\0",
                                  NULL, &timeout, filtered);
         if (r <= 0)
                 return r;
 
-        r = parse_sec(timeout, &u);
+        r = parse_sec_fix_0(timeout, &u);
         if (r < 0) {
                 log_warning("Failed to parse timeout for %s, ignoring: %s", where, timeout);
                 return 0;
@@ -178,6 +199,10 @@ int generator_write_timeouts(
         node = fstab_node_to_udev_node(what);
         if (!node)
                 return log_oom();
+        if (!is_device_path(node)) {
+                log_warning("x-systemd.device-timeout ignored for %s", what);
+                return 0;
+        }
 
         r = unit_name_from_path(node, ".device", &unit);
         if (r < 0)
@@ -185,7 +210,65 @@ int generator_write_timeouts(
 
         return write_drop_in_format(dir, unit, 50, "device-timeout",
                                     "# Automatically generated by %s\n\n"
-                                    "[Unit]\nJobTimeoutSec=" USEC_FMT,
+                                    "[Unit]\n"
+                                    "JobRunningTimeoutSec=%s",
+                                    program_invocation_short_name,
+                                    timeout);
+}
+
+int generator_write_device_deps(
+                const char *dir,
+                const char *what,
+                const char *where,
+                const char *opts) {
+
+        /* fstab records that specify _netdev option should apply the network
+         * ordering on the actual device depending on network connection. If we
+         * are not mounting real device (NFS, CIFS), we rely on _netdev effect
+         * on the mount unit itself. */
+
+        _cleanup_free_ char *node = NULL, *unit = NULL;
+        int r;
+
+        if (!fstab_test_option(opts, "_netdev\0"))
+                return 0;
+
+        node = fstab_node_to_udev_node(what);
+        if (!node)
+                return log_oom();
+
+        /* Nothing to apply dependencies to. */
+        if (!is_device_path(node))
+                return 0;
+
+        r = unit_name_from_path(node, ".device", &unit);
+        if (r < 0)
+                return log_error_errno(r, "Failed to make unit name from path: %m");
+
+        /* See mount_add_default_dependencies for explanation why we create such
+         * dependencies. */
+        return write_drop_in_format(dir, unit, 50, "netdev-dependencies",
+                                    "# Automatically generated by %s\n\n"
+                                    "[Unit]\n"
+                                    "After=" SPECIAL_NETWORK_ONLINE_TARGET " " SPECIAL_NETWORK_TARGET "\n"
+                                    "Wants=" SPECIAL_NETWORK_ONLINE_TARGET "\n",
+                                    program_invocation_short_name);
+}
+
+int generator_write_initrd_root_device_deps(const char *dir, const char *what) {
+        _cleanup_free_ char *unit = NULL;
+        int r;
+
+        r = unit_name_from_path(what, ".device", &unit);
+        if (r < 0)
+                return log_error_errno(r, "Failed to make unit name from path: %m");
+
+        return write_drop_in_format(dir, SPECIAL_INITRD_ROOT_DEVICE_TARGET, 50, "root-device",
+                                    "# Automatically generated by %s\n\n"
+                                    "[Unit]\n"
+                                    "Requires=%s\n"
+                                    "After=%s",
                                     program_invocation_short_name,
-                                    u / USEC_PER_SEC);
+                                    unit,
+                                    unit);
 }