From: Thorsten Kukuk <kukuk@suse.com>
Date: Wed, 31 May 2023 06:57:01 +0000 (+0200)
Subject: agetty: use sd_get_sessions() for number of users (#2088)
X-Git-Tag: v2.40-rc1~274^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e915e6baeba3cbce154336a4f1f24a8be93e85ae;p=thirdparty%2Futil-linux.git

agetty: use sd_get_sessions() for number of users (#2088)
---

diff --git a/term-utils/Makemodule.am b/term-utils/Makemodule.am
index 1542320422..b7037fb116 100644
--- a/term-utils/Makemodule.am
+++ b/term-utils/Makemodule.am
@@ -58,6 +58,10 @@ endif
 if HAVE_ECONF
 agetty_LDADD += -leconf
 endif
+if HAVE_SYSTEMD
+agetty_LDADD += $(SYSTEMD_LIBS)
+agetty_CFLAGS = $(SYSTEMD_CFLAGS)
+endif
 endif # BUILD_AGETTY
 
 
diff --git a/term-utils/agetty.c b/term-utils/agetty.c
index cf8725537b..6bc3e5b5a8 100644
--- a/term-utils/agetty.c
+++ b/term-utils/agetty.c
@@ -73,6 +73,11 @@
 # endif
 #endif
 
+#ifdef USE_SYSTEMD
+# include <systemd/sd-daemon.h>
+# include <systemd/sd-login.h>
+#endif
+
 #ifdef __linux__
 #  include <sys/kd.h>
 #  define USE_SYSLOG
@@ -2864,12 +2869,23 @@ static void output_special_char(struct issue *ie,
 	case 'U':
 	{
 		int users = 0;
-		struct utmpx *ut;
-		setutxent();
-		while ((ut = getutxent()))
-			if (ut->ut_type == USER_PROCESS)
-				users++;
-		endutxent();
+#ifdef USE_SYSTEMD
+		if (sd_booted() > 0) {
+			users = sd_get_sessions(NULL);
+			if (users < 0)
+				users = 0;
+		} else {
+#endif
+			users = 0;
+			struct utmpx *ut;
+			setutxent();
+			while ((ut = getutxent()))
+				if (ut->ut_type == USER_PROCESS)
+					users++;
+			endutxent();
+#ifdef USE_SYSTEMD
+		}
+#endif
 		if (c == 'U')
 			fprintf(ie->output, P_("%d user", "%d users", users), users);
 		else