mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-27 21:14:44 +08:00
e4c4bf9968
UML had two wrapper procedures for kmalloc, um_kmalloc and um_kmalloc_atomic because the flag constants weren't available in userspace code. kern_constants.h had made kernel constants available for a long time, so there is no need for these wrappers any more. Rather, userspace code calls kmalloc directly with the userspace versions of the gfp flags. kmalloc isn't a real procedure, so I had to essentially copy the inline wrapper around __kmalloc. vmalloc also had its own wrapper for no good reason. This is now gone. 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>
77 lines
1.4 KiB
C
77 lines
1.4 KiB
C
/*
|
|
* Copyright (C) 2001 Jeff Dike (jdike@karaya.com)
|
|
* Licensed under the GPL
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <termios.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include "chan_user.h"
|
|
#include "user.h"
|
|
#include "os.h"
|
|
#include "um_malloc.h"
|
|
|
|
struct tty_chan {
|
|
char *dev;
|
|
int raw;
|
|
struct termios tt;
|
|
};
|
|
|
|
static void *tty_chan_init(char *str, int device, const struct chan_opts *opts)
|
|
{
|
|
struct tty_chan *data;
|
|
|
|
if(*str != ':'){
|
|
printk("tty_init : channel type 'tty' must specify "
|
|
"a device\n");
|
|
return NULL;
|
|
}
|
|
str++;
|
|
|
|
data = kmalloc(sizeof(*data), UM_GFP_KERNEL);
|
|
if(data == NULL)
|
|
return NULL;
|
|
*data = ((struct tty_chan) { .dev = str,
|
|
.raw = opts->raw });
|
|
|
|
return data;
|
|
}
|
|
|
|
static int tty_open(int input, int output, int primary, void *d,
|
|
char **dev_out)
|
|
{
|
|
struct tty_chan *data = d;
|
|
int fd, err;
|
|
|
|
fd = os_open_file(data->dev, of_set_rw(OPENFLAGS(), input, output), 0);
|
|
if(fd < 0)
|
|
return fd;
|
|
|
|
if(data->raw){
|
|
CATCH_EINTR(err = tcgetattr(fd, &data->tt));
|
|
if(err)
|
|
return err;
|
|
|
|
err = raw(fd);
|
|
if(err)
|
|
return err;
|
|
}
|
|
|
|
*dev_out = data->dev;
|
|
return fd;
|
|
}
|
|
|
|
const struct chan_ops tty_ops = {
|
|
.type = "tty",
|
|
.init = tty_chan_init,
|
|
.open = tty_open,
|
|
.close = generic_close,
|
|
.read = generic_read,
|
|
.write = generic_write,
|
|
.console_write = generic_console_write,
|
|
.window_size = generic_window_size,
|
|
.free = generic_free,
|
|
.winch = 0,
|
|
};
|