hibernate-resume: fix resume device timeout

Fixes #7242

Sets the systemd device timeout for the resume device to the same as
the root device. This prevents systemd-hibernate-resume@.service from
silently timing out and booting into a fresh session instead of the
saved hibernation state when the user is using luks, has set
rootflags=x-systemd.device-timeout=X to longer than the default timeout,
and the luks password is entered after the default timeout.

1 files changed, 14 insertions, 0 deletions

diff --git a/src/hibernate-resume/hibernate-resume-generator.c b/src/hibernate-resume/hibernate-resume-generator.c
index 02eb0c9a51..f3b668ccda 100644
--- a/src/hibernate-resume/hibernate-resume-generator.c
+++ b/src/hibernate-resume/hibernate-resume-generator.c
@@ -17,9 +17,11 @@
 
 static const char *arg_dest = "/tmp";
 static char *arg_resume_device = NULL;
+static char *arg_root_options = NULL;
 static bool arg_noresume = false;
 
 STATIC_DESTRUCTOR_REGISTER(arg_resume_device, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_root_options, freep);
 
 static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
 
@@ -35,6 +37,14 @@ static int parse_proc_cmdline_item(const char *key, const char *value, void *dat
 
                 free_and_replace(arg_resume_device, s);
 
+        } else if (streq(key, "rootflags")) {
+
+                if (proc_cmdline_value_missing(key, value))
+                        return 0;
+
+                if (!strextend_with_separator(&arg_root_options, ",", value, NULL))
+                        return log_oom();
+
         } else if (streq(key, "noresume")) {
                 if (value) {
                         log_warning("\"noresume\" kernel command line switch specified with an argument, ignoring.");
@@ -66,6 +76,10 @@ static int process_resume(void) {
         if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-hibernate-resume@.service", lnk) < 0)
                 return log_error_errno(errno, "Failed to create symlink %s: %m", lnk);
 
+        r = generator_write_timeouts(arg_dest, arg_resume_device, arg_resume_device, arg_root_options, NULL);
+        if (r < 0)
+                return r;
+
         return 0;
 }