From 4953b7c4c03472efeadaa2fe89463e4c6d82533a Mon Sep 17 00:00:00 2001 From: Daniel Golle Date: Sun, 12 Apr 2020 21:39:05 +0100 Subject: [PATCH] jail: mount /sys read-only Signed-off-by: Daniel Golle --- jail/jail.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/jail/jail.c b/jail/jail.c index 25b847d..052a78e 100644 --- a/jail/jail.c +++ b/jail/jail.c @@ -302,7 +302,7 @@ static int build_jail_fs(void) } if (opts.sysfs) { mkdir("/sys", 0755); - mount("sysfs", "/sys", "sysfs", MS_NOATIME | MS_NODEV | MS_NOEXEC | MS_NOSUID, 0); + mount("sysfs", "/sys", "sysfs", MS_NOATIME | MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RDONLY, 0); } if (opts.ronly) mount(NULL, "/", NULL, MS_RDONLY | MS_REMOUNT, 0); -- 2.25.1