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authorLennart Poettering <lennart@poettering.net>2010-11-07 22:59:39 -0500
committerLennart Poettering <lennart@poettering.net>2010-11-10 22:38:43 +0100
commit1829dc9dc5f38cd1aaa43912de56c3bb5d8b5617 (patch)
treee5c339ed6e00522b82d336d4498c5322e3621823 /src
parent31a7034d38fd7550699e6fbd002bbe42d9ea3b7e (diff)
selinux: relabel /dev after loading policy
Diffstat (limited to 'src')
-rw-r--r--src/mount-setup.c18
-rw-r--r--src/selinux-setup.c10
2 files changed, 27 insertions, 1 deletions
diff --git a/src/mount-setup.c b/src/mount-setup.c
index fe99f58b66..84a729ebf2 100644
--- a/src/mount-setup.c
+++ b/src/mount-setup.c
@@ -27,6 +27,7 @@
#include <libgen.h>
#include <assert.h>
#include <unistd.h>
+#include <ftw.h>
#include "mount-setup.h"
#include "log.h"
@@ -189,6 +190,16 @@ static int symlink_and_label(const char *old_path, const char *new_path) {
return r;
}
+static int nftw_cb(
+ const char *fpath,
+ const struct stat *sb,
+ int tflag,
+ struct FTW *ftwbuf) {
+
+ label_fix(fpath);
+ return 0;
+};
+
int mount_setup(void) {
const char *symlinks =
@@ -207,6 +218,13 @@ int mount_setup(void) {
if ((r = mount_one(mount_table+i)) < 0)
return r;
+ /* Nodes in devtmpfs need to be manually updated for the
+ * appropriate labels, after mounting. The other virtual API
+ * file systems do not need. */
+
+ if (unlink("/dev/.systemd/relabel-devtmpfs") >= 0)
+ nftw("/dev", nftw_cb, 64, FTW_MOUNT|FTW_PHYS);
+
/* Create a few default symlinks, which are normally created
* bei udevd, but some scripts might need them before we start
* udevd. */
diff --git a/src/selinux-setup.c b/src/selinux-setup.c
index d4da693ca4..b2beb33d1f 100644
--- a/src/selinux-setup.c
+++ b/src/selinux-setup.c
@@ -42,8 +42,14 @@ int selinux_setup(char *const argv[]) {
if (path_is_mount_point("/selinux") > 0)
return 0;
+ /* Before we load the policy we create a flag file to ensure
+ * that after the reexec we iterate through /dev to relabel
+ * things. */
+ mkdir_p("/dev/.systemd", 0755);
+ touch("/dev/.systemd/relabel-devtmpfs");
+
if (selinux_init_load_policy(&enforce) == 0) {
- log_info("Successfully loaded SELinux policy, reexecuting.");
+ log_debug("Successfully loaded SELinux policy, reexecuting.");
/* FIXME: Ideally we'd just call setcon() here instead
* of having to reexecute ourselves here. */
@@ -55,6 +61,8 @@ int selinux_setup(char *const argv[]) {
} else {
log_full(enforce > 0 ? LOG_ERR : LOG_DEBUG, "Failed to load SELinux policy.");
+ unlink("/dev/.systemd/relabel-devtmpfs");
+
if (enforce > 0)
return -EIO;
}