[PATCH] uml: initrd cleanup

	tlb.o trap_kern.o trap_user.o uaccess_user.o um_arch.o umid.o \

	user_util.o

obj-$(CONFIG_BLK_DEV_INITRD) += initrd_kern.o initrd_user.o

obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o

obj-$(CONFIG_GPROF)	+= gprof_syms.o

obj-$(CONFIG_GCOV)	+= gmon_syms.o

obj-$(CONFIG_TTY_LOG)	+= tty_log.o

/*

 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)

 * Licensed under the GPL

 */

#include "linux/init.h"

#include "linux/bootmem.h"

#include "linux/initrd.h"

#include "asm/types.h"

#include "user_util.h"

#include "kern_util.h"

#include "initrd.h"

#include "init.h"

#include "os.h"

/* Changed by uml_initrd_setup, which is a setup */

static char *initrd __initdata = NULL;

static int __init read_initrd(void)

{

	void *area;

	long long size;

	int err;

	if(initrd == NULL) return 0;

	err = os_file_size(initrd, &size);

	if(err) return 0;

	area = alloc_bootmem(size);

	if(area == NULL) return 0;

	if(load_initrd(initrd, area, size) == -1) return 0;

	initrd_start = (unsigned long) area;

	initrd_end = initrd_start + size;

	return 0;

}

__uml_postsetup(read_initrd);

static int __init uml_initrd_setup(char *line, int *add)

{

	initrd = line;

	return 0;

}

__uml_setup("initrd=", uml_initrd_setup,

"initrd=<initrd image>\n"

"    This is used to boot UML from an initrd image.  The argument is the\n"

"    name of the file containing the image.\n\n"

);

int load_initrd(char *filename, void *buf, int size)

{

	int fd, n;

	fd = os_open_file(filename, of_read(OPENFLAGS()), 0);

	if(fd < 0){

		printk("Opening '%s' failed - err = %d\n", filename, -fd);

		return(-1);

	}

	n = os_read_file(fd, buf, size);

	if(n != size){

		printk("Read of %d bytes from '%s' failed, err = %d\n", size,

		       filename, -n);

		return(-1);

	}

	os_close_file(fd);

	return(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:

 */