X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=src%2Fnspawn.c;h=a1ed425f05818ab970d262447e467ad71ac63351;hb=b9b2b042c5564dfff730eeab43db9ac4bbe4c650;hp=50d7c2e2895717a6ae8a81d19efa8410a31f2a7e;hpb=5c94603d4c011d35026251994d77a0bf2e56c593;p=elogind.git

diff --git a/src/nspawn.c b/src/nspawn.c
index 50d7c2e28..a1ed425f0 100644
--- a/src/nspawn.c
+++ b/src/nspawn.c
@@ -124,15 +124,17 @@ static int mount_all(const char *dest) {
         } MountPoint;
 
         static const MountPoint mount_table[] = {
-                { "proc",      "/proc",     "proc",      NULL,        MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
-                { "/proc/sys", "/proc/sys", "bind",      NULL,        MS_BIND, true },                      /* Bind mount first */
-                { "/proc/sys", "/proc/sys", "bind",      NULL,        MS_BIND|MS_RDONLY|MS_REMOUNT, true }, /* Then, make it r/o */
-                { "sysfs",     "/sys",      "sysfs",     NULL,        MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, true },
-                { "tmpfs",     "/dev",      "tmpfs",     "mode=755",  MS_NOSUID, true },
-                { "/dev/pts",  "/dev/pts",  "bind",      NULL,        MS_BIND, true },
-                { "tmpfs",     "/run",      "tmpfs",     "mode=755",  MS_NOSUID|MS_NODEV, true },
+                { "proc",      "/proc",     "proc",  NULL,       MS_NOSUID|MS_NOEXEC|MS_NODEV, true  },
+                { "/proc/sys", "/proc/sys", "bind",  NULL,       MS_BIND, true                       },   /* Bind mount first */
+                { "/proc/sys", "/proc/sys", "bind",  NULL,       MS_BIND|MS_RDONLY|MS_REMOUNT, true  },   /* Then, make it r/o */
+                { "/sys",      "/sys",      "bind",  NULL,       MS_BIND,                      true  },   /* Bind mount first */
+                { "/sys",      "/sys",      "bind",  NULL,       MS_BIND|MS_RDONLY|MS_REMOUNT, true  },   /* Then, make it r/o */
+                { "tmpfs",     "/dev",      "tmpfs", "mode=755", MS_NOSUID,                    true  },
+                { "/dev/pts",  "/dev/pts",  "bind",  NULL,       MS_BIND,                      true  },
+                { "tmpfs",     "/run",      "tmpfs", "mode=755", MS_NOSUID|MS_NODEV,           true  },
 #ifdef HAVE_SELINUX
-                { "selinux",   "/selinux",  "selinuxfs", NULL,        MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, false },
+                { "/sys/fs/selinux", "/sys/fs/selinux", "bind", NULL, MS_BIND,                      false },  /* Bind mount first */
+                { "/sys/fs/selinux", "/sys/fs/selinux", "bind", NULL, MS_BIND|MS_RDONLY|MS_REMOUNT, false },  /* Then, make it r/o */
 #endif
         };
 
@@ -739,6 +741,10 @@ int main(int argc, char *argv[]) {
                 if (prctl(PR_SET_PDEATHSIG, SIGKILL) < 0)
                         goto child_fail;
 
+                /* Mark / as private, in case somebody marked it shared */
+                if (mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL) < 0)
+                        goto child_fail;
+
                 if (mount_all(arg_directory) < 0)
                         goto child_fail;