util: make touched files non-writable by default

[elogind.git] / src / mount-setup.c

diff --git a/src/mount-setup.c b/src/mount-setup.c
index 7e468e2728bab9f51b29bdf9f6e604bcd6d8f091..d740d4f3570bedd34a7deea0dc636bdb2e54e3c0 100644 (file)
--- a/src/mount-setup.c
+++ b/src/mount-setup.c
@@ -35,6 +35,10 @@
 #include "util.h"
 #include "label.h"
 
+#ifndef TTY_GID
+#define TTY_GID 5
+#endif
+
 typedef struct MountPoint {
         const char *what;
         const char *where;
@@ -48,14 +52,15 @@ static const MountPoint mount_table[] = {
         { "proc",     "/proc",                  "proc",     NULL,                MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
         { "sysfs",    "/sys",                   "sysfs",    NULL,                MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
         { "devtmpfs", "/dev",                   "devtmpfs", "mode=755",          MS_NOSUID,                    true },
-        { "tmpfs",    "/dev/shm",               "tmpfs",    "mode=1777",         MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
-        { "devpts",   "/dev/pts",               "devpts",   NULL,                MS_NOSUID|MS_NOEXEC,          false },
+        { "tmpfs",    "/dev/shm",               "tmpfs",    "mode=1777",         MS_NOSUID|MS_NODEV,           true },
+        { "devpts",   "/dev/pts",               "devpts",   "mode=620,gid=" STRINGIFY(TTY_GID), MS_NOSUID|MS_NOEXEC, false },
+        { "tmpfs",    "/dev/.run",              "tmpfs",    "mode=755",          MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
         { "tmpfs",    "/sys/fs/cgroup",         "tmpfs",    "mode=755",          MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
         { "cgroup",   "/sys/fs/cgroup/systemd", "cgroup",   "none,name=systemd", MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
 };
 
 /* These are API file systems that might be mounted by other software,
- * we just list them here so that we know that we should igore them */
+ * we just list them here so that we know that we should ignore them */
 
 static const char * const ignore_paths[] = {
         "/selinux",
@@ -78,7 +83,7 @@ bool mount_point_is_api(const char *path) {
 }
 
 bool mount_point_ignore(const char *path) {
-       unsigned i;
+        unsigned i;
 
         for (i = 0; i < ELEMENTSOF(ignore_paths); i++)
                 if (path_equal(path, ignore_paths[i]))
@@ -117,7 +122,7 @@ static int mount_one(const MountPoint *p) {
                 return p->fatal ? -errno : 0;
         }
 
-        label_fix(p->where);
+        label_fix(p->where, false);
 
         return 0;
 }
@@ -212,7 +217,7 @@ static int nftw_cb(
         if (ftwbuf->level == 0)
                 return 0;
 
-        label_fix(fpath);
+        label_fix(fpath, true);
         return 0;
 };
 
@@ -223,8 +228,7 @@ int mount_setup(void) {
                 "/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";
+                "/proc/self/fd/2\0"  "/dev/stderr\0";
 
         int r;
         unsigned i;
@@ -238,7 +242,7 @@ int mount_setup(void) {
          * appropriate labels, after mounting. The other virtual API
          * file systems do not need. */
 
-        if (unlink("/dev/.systemd/relabel-devtmpfs") >= 0)
+        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
@@ -248,5 +252,9 @@ int mount_setup(void) {
         NULSTR_FOREACH_PAIR(j, k, symlinks)
                 symlink_and_label(j, k);
 
+        /* Create a few directories we always want around */
+        mkdir("/dev/.run/systemd", 0755);
+        mkdir("/dev/.run/systemd/ask-password", 0755);
+
         return mount_cgroup_controllers();
 }