From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/um/drivers/null.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 arch/um/drivers/null.c (limited to 'arch/um/drivers/null.c') diff --git a/arch/um/drivers/null.c b/arch/um/drivers/null.c new file mode 100644 index 000000000000..14cc5f78398a --- /dev/null +++ b/arch/um/drivers/null.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include +#include +#include "chan_user.h" +#include "os.h" + +static int null_chan; + +static void *null_init(char *str, int device, struct chan_opts *opts) +{ + return(&null_chan); +} + +static int null_open(int input, int output, int primary, void *d, + char **dev_out) +{ + *dev_out = NULL; + return(os_open_file(DEV_NULL, of_rdwr(OPENFLAGS()), 0)); +} + +static int null_read(int fd, char *c_out, void *unused) +{ + return(-ENODEV); +} + +static void null_free(void *data) +{ +} + +struct chan_ops null_ops = { + .type = "null", + .init = null_init, + .open = null_open, + .close = generic_close, + .read = null_read, + .write = generic_write, + .console_write = generic_console_write, + .window_size = generic_window_size, + .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: + */ -- cgit v1.2.2