summaryrefslogtreecommitdiffstats
path: root/arch/um/drivers/null.c
diff options
context:
space:
mode:
authorJeff Dike <jdike@addtoit.com>2007-10-16 01:26:41 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:04 -0700
commite99525f9706900417f37721e601d2b414d41bfee (patch)
treefb407ea65a7c4c8bf457dd2ccab98842570cc62f /arch/um/drivers/null.c
parent79f662334fefa2dd3fdf66c44a4d2dca5e378ab4 (diff)
downloadop-kernel-dev-e99525f9706900417f37721e601d2b414d41bfee.zip
op-kernel-dev-e99525f9706900417f37721e601d2b414d41bfee.tar.gz
uml: console subsystem tidying
This does a lot of cleanup on the UML console system. This patch should be entirely non-functional. The tidying is as follows: header cleanups - the includes should be closer to minimal and complete all printks now have a severity lots of style fixes fd_close is restructured a little in order to reduce the nesting some functions were calling the os_* wrappers when they can call libc directly port_accept had a unnecessary variable it also tested a pid unecessarily before killing it some functions were made static xterm_free is gone, as it was identical to generic_free Signed-off-by: Jeff Dike <jdike@linux.intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/drivers/null.c')
-rw-r--r--arch/um/drivers/null.c28
1 files changed, 11 insertions, 17 deletions
diff --git a/arch/um/drivers/null.c b/arch/um/drivers/null.c
index 9016c68..b808641 100644
--- a/arch/um/drivers/null.c
+++ b/arch/um/drivers/null.c
@@ -1,31 +1,36 @@
/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{linux.intel,addtoit}.com)
* Licensed under the GPL
*/
-#include <stdlib.h>
+#include <stddef.h>
#include <errno.h>
-#include "chan_user.h"
+#include <fcntl.h>
#include "os.h"
+#include "chan_user.h"
/* This address is used only as a unique identifer */
static int null_chan;
static void *null_init(char *str, int device, const struct chan_opts *opts)
{
- return(&null_chan);
+ return &null_chan;
}
static int null_open(int input, int output, int primary, void *d,
char **dev_out)
{
+ int fd;
+
*dev_out = NULL;
- return(os_open_file(DEV_NULL, of_rdwr(OPENFLAGS()), 0));
+
+ fd = open(DEV_NULL, O_RDWR);
+ return (fd < 0) ? -errno : fd;
}
static int null_read(int fd, char *c_out, void *unused)
{
- return(-ENODEV);
+ return -ENODEV;
}
static void null_free(void *data)
@@ -44,14 +49,3 @@ const struct chan_ops null_ops = {
.free = null_free,
.winch = 0,
};
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
OpenPOWER on IntegriCloud