rats

commit 6880d2a9d9a124d4d22ebc0ac0f428785cee3101
parent c8bcb45a39aaf2a63681974aee0943238c4f3323
Author: cowmonk <cowmonk@based.pt>
Date:   Wed, 24 Jun 2026 20:26:16 +0000

Mount VFS with correct flags

Additionally added the `/dev/shm` to be mounted by default now for
wayland setups.

Diffstat:
M
README
 | 
9
++++++++-
M
origo.c
 | 
9
++++++---

2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/README b/README
@@ -34,7 +34,7 @@ Project Overview
 
 origo: PID 1 - minimal init.
 ----------------------------
-Mounts /proc /sys /dev /dev/pts, runs /etc/rc.boot,
+Mounts /proc /sys /dev /dev/pts /dev/shm, runs /etc/rc.boot,
 spawns+respawns serva, handles poweroff/reboot/single-user.
 Signal mapping (same as sinit):
     - SIGINT  -> reboot (CtrlAltDel)
@@ -42,6 +42,13 @@ Signal mapping (same as sinit):
     - SIGUSR2 -> reboot
     - SIGTERM -> single-user 
 
+NOTE: origo won't mount `/run` nor `/tmp` to tmpfs because they are 
+optional in most setups. For users who want to mount these at boot,
+you can edit your `/etc/fstab` to do so: This applies to those who
+install the optional example rc.boot script but you can do so yourself
+by invoking `mount -a` in your own rc.boot scripts to have your system
+respect `/etc/fstab`.
+
 origo will do the following on shutdown/reboot:
     1. stopping serva (which stops all supervised services)
     2. kills all remaining processes
diff --git a/origo.c b/origo.c
@@ -61,15 +61,18 @@ run_script(const char *path)
 static void
 mount_fs(void)
 {
-	if (mount("proc", "/proc", "proc", 0, NULL) < 0)
+	if (mount("proc", "/proc", "proc", MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RELATIME, NULL) < 0)
 		weprintf("mount /proc:");
-	if (mount("sysfs", "/sys", "sysfs", 0, NULL) < 0)
+	if (mount("sysfs", "/sys", "sysfs", MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RELATIME, NULL) < 0)
 		weprintf("mount /sys:");
 	if (mount("devtmpfs", "/dev", "devtmpfs", 0, NULL) < 0)
 		weprintf("mount /dev:");
 	mkdir("/dev/pts", 0755);
-	if (mount("devpts", "/dev/pts", "devpts", 0, NULL) < 0)
+	if (mount("devpts", "/dev/pts", "devpts", MS_NOSUID | MS_NOEXEC | MS_RELATIME, NULL) < 0)
 		weprintf("mount /dev/pts:");
+	mkdir("/dev/shm", 0755);
+	if (mount("tmpfs", "/dev/shm", "tmpfs", MS_NODEV | MS_NOSUID | MS_NOEXEC, NULL) < 0)
+		weprintf("mount /dev/shm:");
 }
 
 /* reap: handle SIGCHLD, respawn serva if it died */