From 46995fe446acb48a55f35b7d3c3d2e5373cdd54d Mon Sep 17 00:00:00 2001
From: Joachim Wiberg <troglobit@gmail.com>
Date: Sat, 13 Mar 2021 00:37:47 +0100
Subject: [PATCH] Add mksusbys() to helpers.c, a kind-of tmpfiles.d in C

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
---
 src/helpers.c | 23 +++++++++++++++++++++++
 src/helpers.h |  2 ++
 2 files changed, 25 insertions(+)

diff --git a/src/helpers.c b/src/helpers.c
index fa04e39d..6ccf713e 100644
--- a/src/helpers.c
+++ b/src/helpers.c
@@ -447,6 +447,29 @@ int getcgroup(char *buf, size_t len)
 	return 0;
 }
 
+int mksubsys(const char *dir, mode_t mode, char *user, char *group)
+{
+	mode_t omask;
+	int uid, gid;
+	int rc = 0;
+
+	omask = umask(0);
+
+	uid = getuser(user, NULL);
+	if (uid >= 0) {
+		gid = getgroup(group);
+		if (gid < 0)
+			gid = 0;
+
+		rc = makedir(dir, mode);
+		chown(dir, uid, gid);
+	}
+
+	umask(omask);
+
+	return rc;
+}
+
 void set_hostname(char **hostname)
 {
 	FILE *fp;
diff --git a/src/helpers.h b/src/helpers.h
index 87315875..a6f3a115 100644
--- a/src/helpers.h
+++ b/src/helpers.h
@@ -85,6 +85,8 @@ int     getgroup        (char *group);
 int     getcuser        (char *buf, size_t len);
 int     getcgroup       (char *buf, size_t len);
 
+int     mksubsys        (const char *dir, mode_t mode, char *user, char *group);
+
 void    set_hostname    (char **hostname);
 void    networking      (int updown);