procd: improve early console handling

The malta target is broken since procd is used
as init. The initramfs image boots fine, however
the console is not working.

Improve the early console handling to fix the
problem.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37451 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 40 insertions, 0 deletions

diff --git a/package/system/procd/patches/0002-early-remove-superfluous-close-of-stdio-file-descrip.patch b/package/system/procd/patches/0002-early-remove-superfluous-close-of-stdio-file-descrip.patch
new file mode 100644
index 0000000000..096983200c
--- /dev/null
+++ b/package/system/procd/patches/0002-early-remove-superfluous-close-of-stdio-file-descrip.patch
@@ -0,0 +1,40 @@
+From 1edd25cfa0a26dac1ca5d49bce479ebdea336437 Mon Sep 17 00:00:00 2001
+From: Gabor Juhos <juhosg@openwrt.org>
+Date: Fri, 19 Jul 2013 08:21:17 +0200
+Subject: [PATCH 2/2] early: remove superfluous close of stdio file
+ descriptors
+
+'man dup2' says:
+
+  dup2() makes newfd be the copy of oldfd, closing newfd first if
+  necessary, but note the following:
+
+  *  If oldfd is not a valid file descriptor, then the call fails,
+     and newfd is not closed.
+
+  *  If oldfd is a valid file descriptor, and newfd has the same
+     value as oldfd, then dup2() does nothing, and returns newfd.
+
+Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
+---
+ early.c |    4 ----
+ 1 file changed, 4 deletions(-)
+
+diff --git a/early.c b/early.c
+index 204623b..f9e3277 100644
+--- a/early.c
++++ b/early.c
+@@ -53,10 +53,6 @@ static void early_console(const char *dev)
+ 		mkdev("*console", 0600);
+ 
+ 	dd = open(dev, O_RDWR);
+-	close(STDIN_FILENO);
+-	close(STDOUT_FILENO);
+-	close(STDERR_FILENO);
+-
+ 	if (dd < 0) {
+ 		ERROR("Failed to open %s\n", dev);
+ 		return;
+-- 
+1.7.10
+