From b26c0b68a4fb98f1f18a3d918bf2d48d37bc1dc8 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 7 Aug 2019 12:50:42 +0200
Subject: [PATCH 1/2] format-table: add UID/GID output support to
 format-table.h

---
 src/shared/format-table.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/shared/format-table.h b/src/shared/format-table.h
index aacf978978..80f319d054 100644
--- a/src/shared/format-table.h
+++ b/src/shared/format-table.h
@@ -53,6 +53,12 @@ typedef enum TableDataType {
 #define TABLE_PID TABLE_INT32
 assert_cc(sizeof(pid_t) == sizeof(int32_t));
 
+/* UIDs/GIDs are just 32bit unsigned integers on Linux */
+#define TABLE_UID TABLE_UINT32
+#define TABLE_GID TABLE_UINT32
+assert_cc(sizeof(uid_t) == sizeof(uint32_t));
+assert_cc(sizeof(gid_t) == sizeof(uint32_t));
+
 typedef struct Table Table;
 typedef struct TableCell TableCell;
 

From 805f2df11f6ad72d34aebf694213055b848263c4 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 7 Aug 2019 14:50:01 +0200
Subject: [PATCH 2/2] login: port tables over to use TABLE_UID/TABLE_PID

---
 src/login/inhibit.c  | 4 ++--
 src/login/loginctl.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/login/inhibit.c b/src/login/inhibit.c
index 72d455e3e4..e2e1e03605 100644
--- a/src/login/inhibit.c
+++ b/src/login/inhibit.c
@@ -114,9 +114,9 @@ static int print_inhibitors(sd_bus *bus) {
 
                 r = table_add_many(table,
                                    TABLE_STRING, who,
-                                   TABLE_UINT32, uid,
+                                   TABLE_UID, (uid_t) uid,
                                    TABLE_STRING, strna(u),
-                                   TABLE_UINT32, pid,
+                                   TABLE_PID, (pid_t) pid,
                                    TABLE_STRING, strna(comm),
                                    TABLE_STRING, what,
                                    TABLE_STRING, why,
diff --git a/src/login/loginctl.c b/src/login/loginctl.c
index 33c96dc858..61f619de9c 100644
--- a/src/login/loginctl.c
+++ b/src/login/loginctl.c
@@ -184,7 +184,7 @@ static int list_sessions(int argc, char *argv[], void *userdata) {
 
                 r = table_add_many(table,
                                    TABLE_STRING, id,
-                                   TABLE_UINT32, uid,
+                                   TABLE_UID, (uid_t) uid,
                                    TABLE_STRING, user,
                                    TABLE_STRING, seat,
                                    TABLE_STRING, strna(tty));
@@ -243,7 +243,7 @@ static int list_users(int argc, char *argv[], void *userdata) {
                         break;
 
                 r = table_add_many(table,
-                                   TABLE_UINT32, uid,
+                                   TABLE_UID, (uid_t) uid,
                                    TABLE_STRING, user);
                 if (r < 0)
                         return log_error_errno(r, "Failed to add row to table: %m");