From 4d7091cae915b64e0c9d9dce6d45a5ed3e4dd622 Mon Sep 17 00:00:00 2001 From: sin Date: Mon, 14 Apr 2014 11:22:28 +0100 Subject: [PATCH] Use *_FILENO instead of hardcoding constants --- switch_root.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/switch_root.c b/switch_root.c index afbe328..b61a3a0 100644 --- a/switch_root.c +++ b/switch_root.c @@ -110,16 +110,13 @@ main(int argc, char **argv) /* if -c is set, redirect stdin/stdout/stderr to console */ if (console) { - close(0); - if(open(console, O_RDWR) == -1){ + close(STDIN_FILENO); + if(open(console, O_RDWR) == -1) eprintf("open %s:", console); - } - if (dup2(0,1) == -1){ + if (dup2(STDIN_FILENO, STDOUT_FILENO) != STDOUT_FILENO) eprintf("dup2 %s:", "0,1"); - } - if (dup2(0,2) == -1){ + if (dup2(STDIN_FILENO, STDERR_FILENO) != STDERR_FILENO) eprintf("dup2 %s:", "0,2"); - } } /* execute init */