commit fa6db9e8b4bcfa2229cb02508a64e788733fdccf
Author: Willy Tarreau <w@1wt.eu>
Date:   Fri Sep 27 19:26:45 2013 +0200

    init: add support for devtmpfs at boot
    
    When running from an initramfs, devtmpfs is not mounted by the kernel
    and we have to do it ourselves. It is much more convenient when available
    than a static /dev as it immediately presents all possible root devices
    whatever their IDs.
    
    We still create the missing entries according to the .preinit, and we
    also set permissions based on those referenced there. That way the
    .preinit serves as a reference for permissions even if major/minors
    are different.

diff --git a/init/init.c b/init/init.c
index 20d6e3b..b9aeac0 100644
--- a/init/init.c
+++ b/init/init.c
@@ -259,10 +259,11 @@ static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) cfg_lin
 static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) dev_options[] = "size=0,nr_inodes=4096,mode=755";
 static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) str__linuxrc[] = "/linuxrc";
 static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) proc_dir[]  = "/proc";
-static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) tmpfs_fs[]  = "tmpfs";
+static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) devtmpfs_fs[]  = "devtmpfs";
 static const char __attribute__ ((__section__(STR_SECT),__aligned__(1))) dev_root[]  = "dev/root";
 
 
+#define tmpfs_fs	(devtmpfs_fs + 3)	// static const char tmpfs_fs(] = "tmpfs";
 #define tmp_name	(var_tmp + 4)		// static const char tmp_name[]  = "/tmp";
 #define proc_fs		(proc_dir+1)		// static const char proc_fs[]  = "proc";
 #define fd_dir		(proc_self_fd + 11)	// static const char fd_dir[]  = "fd";
@@ -849,7 +850,7 @@ static int parse_cfg(char **cfg_data, char *bufend, char **envp) {
 static inline int mknod_chown(mode_t mode, uid_t uid, gid_t gid, uchar major, uchar minor, char *name) {
     int error;
 
-    if (mknod(name, mode, makedev(major, minor)) == -1) {
+    if (mknod(name, mode, makedev(major, minor)) == -1 && chmod(name, mode) == -1) {
 	error = 1;
 	print("init/error : mknod("); print(name); print(") failed\n");
     }
@@ -1313,7 +1314,8 @@ int main(int argc, char **argv, char **envp) {
 #ifndef I_AM_REALLY_DEBUGGING
 	if (linuxrc || stat(dev_console, &statf) == -1) {
 	    print("init/info: /dev/console not found, rebuilding /dev.\n");
-	    if (mount(dev_name, dev_name, tmpfs_fs, MS_MGC_VAL, dev_options) == -1)
+	    if (mount(dev_name, dev_name, devtmpfs_fs, MS_MGC_VAL, dev_options) == -1 &&
+		mount(dev_name, dev_name, tmpfs_fs, MS_MGC_VAL, dev_options) == -1)
 		print("init/err: cannot mount /dev.\n");
 	    else {
 		int i;