X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fmount-setup.c;h=fe99f58b6688daa7fb967265e2fca19a5301bf78;hb=f14e15f8affe906a45d8afc76c302a49cd1f70ee;hp=8b4d8c7f4420c0a5de37423ba3e82129b0729845;hpb=449ddb2d23a63ca4c8cd70d13a070fba87c1fb30;p=elogind.git

diff --git a/src/mount-setup.c b/src/mount-setup.c
index 8b4d8c7f4..fe99f58b6 100644
--- a/src/mount-setup.c
+++ b/src/mount-setup.c
@@ -26,11 +26,13 @@
 #include <string.h>
 #include <libgen.h>
 #include <assert.h>
+#include <unistd.h>
 
 #include "mount-setup.h"
 #include "log.h"
 #include "macro.h"
 #include "util.h"
+#include "label.h"
 
 typedef struct MountPoint {
         const char *what;
@@ -42,13 +44,13 @@ typedef struct MountPoint {
 } MountPoint;
 
 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",    "/cgroup",         "tmpfs",    "mode=755",          MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
-        { "cgroup",   "/cgroup/systemd", "cgroup",   "none,name=systemd", MS_NOSUID|MS_NOEXEC|MS_NODEV, true },
+        { "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",    "/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,
@@ -75,7 +77,7 @@ bool mount_point_is_api(const char *path) {
                 if (path_equal(path, ignore_paths[i]))
                         return true;
 
-        return path_startswith(path, "/cgroup/");
+        return path_startswith(path, "/sys/fs/cgroup/");
 }
 
 static int mount_one(const MountPoint *p) {
@@ -108,6 +110,8 @@ static int mount_one(const MountPoint *p) {
                 return p->fatal ? -errno : 0;
         }
 
+        label_fix(p->where);
+
         return 0;
 }
 
@@ -138,7 +142,7 @@ static int mount_cgroup_controllers(void) {
                         goto finish;
                 }
 
-                if (asprintf(&where, "/cgroup/%s", controller) < 0) {
+                if (asprintf(&where, "/sys/fs/cgroup/%s", controller) < 0) {
                         free(controller);
                         r = -ENOMEM;
                         goto finish;
@@ -168,13 +172,47 @@ 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;
+}
+
 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;
 
+        /* 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();
 }