X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fmount-setup.c;h=14ac18125fe9f621b837ab2f7891822b6995db86;hb=8e486ef03b992d4c0d373195f5e8d1c3a200bc30;hp=c1ddbe45f0c116df924e20932b68118b92b15829;hpb=77d5f105bf63330350c7bddacdeda914f945590f;p=elogind.git

diff --git a/src/mount-setup.c b/src/mount-setup.c
index c1ddbe45f..14ac18125 100644
--- a/src/mount-setup.c
+++ b/src/mount-setup.c
@@ -26,11 +26,14 @@
 #include <string.h>
 #include <libgen.h>
 #include <assert.h>
+#include <unistd.h>
+#include <ftw.h>
 
 #include "mount-setup.h"
 #include "log.h"
 #include "macro.h"
 #include "util.h"
+#include "label.h"
 
 typedef struct MountPoint {
         const char *what;
@@ -71,11 +74,17 @@ bool mount_point_is_api(const char *path) {
                 if (path_equal(path, mount_table[i].where))
                         return true;
 
+        return path_startswith(path, "/sys/fs/cgroup/");
+}
+
+bool mount_point_ignore(const char *path) {
+       unsigned i;
+
         for (i = 0; i < ELEMENTSOF(ignore_paths); i++)
                 if (path_equal(path, ignore_paths[i]))
                         return true;
 
-        return path_startswith(path, "/sys/fs/cgroup/");
+        return false;
 }
 
 static int mount_one(const MountPoint *p) {
@@ -108,6 +117,8 @@ static int mount_one(const MountPoint *p) {
                 return p->fatal ? -errno : 0;
         }
 
+        label_fix(p->where);
+
         return 0;
 }
 
@@ -168,13 +179,68 @@ finish:
         return r;
 }
 
+static int symlink_and_label(const char *old_path, const char *new_path) {
+        int r;
+
+        assert(old_path);
+        assert(new_path);
+
+        if ((r = label_symlinkfile_set(new_path)) < 0)
+                return r;
+
+        if (symlink(old_path, new_path) < 0)
+                r = -errno;
+
+        label_file_clear();
+
+        return r;
+}
+
+static int nftw_cb(
+                const char *fpath,
+                const struct stat *sb,
+                int tflag,
+                struct FTW *ftwbuf) {
+
+        /* No need to label /dev twice in a row... */
+        if (ftwbuf->level == 0)
+                return 0;
+
+        label_fix(fpath);
+        return 0;
+};
+
 int mount_setup(void) {
+
+        const char symlinks[] =
+                "/proc/kcore\0"      "/dev/core\0"
+                "/proc/self/fd\0"    "/dev/fd\0"
+                "/proc/self/fd/0\0"  "/dev/stdin\0"
+                "/proc/self/fd/1\0"  "/dev/stdout\0"
+                "/proc/self/fd/2\0"  "/dev/stderr\0"
+                "\0";
+
         int r;
         unsigned i;
+        const char *j, *k;
 
         for (i = 0; i < ELEMENTSOF(mount_table); i ++)
                 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. */
+
+        NULSTR_FOREACH_PAIR(j, k, symlinks)
+                symlink_and_label(j, k);
+
         return mount_cgroup_controllers();
 }