Commit 9b67a3c4 authored by Jeff Dike's avatar Jeff Dike Committed by Linus Torvalds
Browse files

[PATCH] uml: initrd cleanup



The serial UML OS-abstraction layer patch (um/kernel dir).

This moves all systemcalls from initrd_user.c file under os-Linux dir and join
initrd_user.c and initrd_kern.c files in new file initrd.c
Signed-off-by: default avatarGennady Sharapov <Gennady.V.Sharapov@intel.com>
Signed-off-by: default avatarJeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 41a9cf8e
......@@ -14,7 +14,7 @@ obj-y = config.o exec_kern.o exitcode.o \
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:
*/
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