6 files changed, 44 insertions, 0 deletions
diff --git a/src/libsystemd/libsystemd.sym b/src/libsystemd/libsystemd.sym
index 70ea347361..d48ef6bbe2 100644
--- a/src/libsystemd/libsystemd.sym
+++ b/src/libsystemd/libsystemd.sym
@@ -509,4 +509,5 @@ global:
         sd_bus_track_count_sender;
         sd_bus_set_exit_on_disconnect;
         sd_bus_get_exit_on_disconnect;
+        sd_id128_get_invocation;
 } LIBSYSTEMD_231;
diff --git a/src/libsystemd/sd-bus/bus-common-errors.c b/src/libsystemd/sd-bus/bus-common-errors.c
index 9cc28ed564..d2a826bf6e 100644
--- a/src/libsystemd/sd-bus/bus-common-errors.c
+++ b/src/libsystemd/sd-bus/bus-common-errors.c
@@ -27,6 +27,7 @@
 BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map bus_common_errors[] = {
         SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_UNIT,                 ENOENT),
         SD_BUS_ERROR_MAP(BUS_ERROR_NO_UNIT_FOR_PID,              ESRCH),
+        SD_BUS_ERROR_MAP(BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID,    ENOENT),
         SD_BUS_ERROR_MAP(BUS_ERROR_UNIT_EXISTS,                  EEXIST),
         SD_BUS_ERROR_MAP(BUS_ERROR_LOAD_FAILED,                  EIO),
         SD_BUS_ERROR_MAP(BUS_ERROR_JOB_FAILED,                   EREMOTEIO),
diff --git a/src/libsystemd/sd-bus/bus-common-errors.h b/src/libsystemd/sd-bus/bus-common-errors.h
index 5df21c8926..525b79fa77 100644
--- a/src/libsystemd/sd-bus/bus-common-errors.h
+++ b/src/libsystemd/sd-bus/bus-common-errors.h
@@ -23,6 +23,7 @@
 
 #define BUS_ERROR_NO_SUCH_UNIT "org.freedesktop.systemd1.NoSuchUnit"
 #define BUS_ERROR_NO_UNIT_FOR_PID "org.freedesktop.systemd1.NoUnitForPID"
+#define BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID "org.freedesktop.systemd1.NoUnitForInvocationID"
 #define BUS_ERROR_UNIT_EXISTS "org.freedesktop.systemd1.UnitExists"
 #define BUS_ERROR_LOAD_FAILED "org.freedesktop.systemd1.LoadFailed"
 #define BUS_ERROR_JOB_FAILED "org.freedesktop.systemd1.JobFailed"
diff --git a/src/libsystemd/sd-id128/id128-util.c b/src/libsystemd/sd-id128/id128-util.c
index c3f527d657..337eae24b4 100644
--- a/src/libsystemd/sd-id128/id128-util.c
+++ b/src/libsystemd/sd-id128/id128-util.c
@@ -192,3 +192,16 @@ int id128_write(const char *p, Id128Format f, sd_id128_t id, bool do_sync) {
 
         return id128_write_fd(fd, f, id, do_sync);
 }
+
+void id128_hash_func(const void *p, struct siphash *state) {
+        siphash24_compress(p, 16, state);
+}
+
+int id128_compare_func(const void *a, const void *b) {
+        return memcmp(a, b, 16);
+}
+
+const struct hash_ops id128_hash_ops = {
+        .hash = id128_hash_func,
+        .compare = id128_compare_func,
+};
diff --git a/src/libsystemd/sd-id128/id128-util.h b/src/libsystemd/sd-id128/id128-util.h
index 3ba59acbca..6b3855acbb 100644
--- a/src/libsystemd/sd-id128/id128-util.h
+++ b/src/libsystemd/sd-id128/id128-util.h
@@ -22,6 +22,8 @@
 #include <stdbool.h>
 
 #include "sd-id128.h"
+
+#include "hash-funcs.h"
 #include "macro.h"
 
 char *id128_to_uuid_string(sd_id128_t id, char s[37]);
@@ -43,3 +45,7 @@ int id128_read(const char *p, Id128Format f, sd_id128_t *ret);
 
 int id128_write_fd(int fd, Id128Format f, sd_id128_t id, bool do_sync);
 int id128_write(const char *p, Id128Format f, sd_id128_t id, bool do_sync);
+
+void id128_hash_func(const void *p, struct siphash *state);
+int id128_compare_func(const void *a, const void *b) _pure_;
+extern const struct hash_ops id128_hash_ops;
diff --git a/src/libsystemd/sd-id128/sd-id128.c b/src/libsystemd/sd-id128/sd-id128.c
index 9f47d04e61..d4450c70a0 100644
--- a/src/libsystemd/sd-id128/sd-id128.c
+++ b/src/libsystemd/sd-id128/sd-id128.c
@@ -129,6 +129,28 @@ _public_ int sd_id128_get_boot(sd_id128_t *ret) {
         return 0;
 }
 
+_public_ int sd_id128_get_invocation(sd_id128_t *ret) {
+        static thread_local sd_id128_t saved_invocation_id = {};
+        int r;
+
+        assert_return(ret, -EINVAL);
+
+        if (sd_id128_is_null(saved_invocation_id)) {
+                const char *e;
+
+                e = secure_getenv("INVOCATION_ID");
+                if (!e)
+                        return -ENXIO;
+
+                r = sd_id128_from_string(e, &saved_invocation_id);
+                if (r < 0)
+                        return r;
+        }
+
+        *ret = saved_invocation_id;
+        return 0;
+}
+
 static sd_id128_t make_v4_uuid(sd_id128_t id) {
         /* Stolen from generate_random_uuid() of drivers/char/random.c
          * in the kernel sources */