From: Gabor Juhos <juhosg@openwrt.org>
Date: Fri, 19 Jul 2013 06:21:17 +0000 (+0200)
Subject: early: remove superfluous close of stdio file descriptors
X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fprocd.git;a=commitdiff_plain;h=eed8e77dcf5b9ce9c21919ea6d549b5dd92bb18a

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>
---

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;