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/*
* Copyright (c) 1999 The University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
#include <oskit/fs/dir.h>
#include <oskit/io/absio.h>
#include <oskit/io/bufio.h>
#include <oskit/machine/multiboot.h>
#include <oskit/machine/base_multiboot.h>
#include <oskit/machine/base_vm.h>
#include <oskit/fs/memfs.h>
#include <stdio.h>
#include <string.h>
#include <oskit/boolean.h>
#include <oskit/c/assert.h>
#include <oskit/io/blkio.h>
/*
* Populate a directory with the contents of the multiboot bmods
*
* If the free_routine is passed in, this routine will free each
* bmod as it is entered into the filesystem. The free routine
* will be called with the start address & length of the bmod.
* (that's the virtual address).
*/
int
bmod_populate(oskit_dir_t *dest,
void (*free_routine)(void *data, oskit_addr_t addr,
oskit_size_t len),
void *free_data)
{
int flags, i, mods_count;
oskit_addr_t mods_addr, file_offs;
oskit_dir_t *sub, *addto;
oskit_absio_t *thefilebuf;
oskit_file_t *thefile;
struct multiboot_module *m;
oskit_u32_t actual;
flags = boot_info.flags;
mods_count = boot_info.mods_count;
mods_addr = phystokv(boot_info.mods_addr);
m = (struct multiboot_module *)mods_addr;
if (!dest) {
return -1;
}
/* Don't bother doing any work if they didn't include any mods */
if (!(flags & MULTIBOOT_MODS)) {
return 0;
}
for (i = 0; i < mods_count; i++, m++) {
char *p;
char *name = (char *) phystokv(m->string);
oskit_addr_t start, end, blocklen;
oskit_error_t rc;
/*
* Skip any leading slashes in the name.
*/
while (*name == '/')
++name;
/*
* Create any intervening directories in the pathname
*/
addto = dest;
while (1) {
p = strchr(name, '/');
if (!p) {
break;
}
*p = '\0';
rc = oskit_dir_lookup(addto, name,
(oskit_file_t **)&sub);
if (rc == 0) {
addto = sub;
oskit_dir_release(sub);
} else {
assert(rc == OSKIT_ENOENT);
rc = oskit_dir_mkdir(addto, name, 0777);
assert(rc == 0);
rc = oskit_dir_lookup(addto, name,
(oskit_file_t **)&sub);
assert(rc == 0);
addto = sub;
oskit_dir_release(sub);
}
name = p + 1;
}
/* Create a file in the directory */
rc = oskit_dir_create(addto, name, 1, 0666, &thefile);
if (rc == OSKIT_EEXIST) {
printf("bmod_populate: `%s' already exists, ignored\n",
(char *)m->string);
if (free_routine) {
start = phystokv(m->mod_start);
end = phystokv(m->mod_end);
free_routine(free_data, start, end-start);
}
continue;
}
assert (rc == 0);
/* Grab its absio interface */
rc = oskit_file_query(thefile, &oskit_absio_iid,
(void **)&thefilebuf);
assert (rc == 0);
start = phystokv(m->mod_start);
end = phystokv(m->mod_end);
file_offs = 0;
while (start < end) {
blocklen = end - start;
rc = oskit_bufio_write((oskit_bufio_t *)thefilebuf,
(char *)start,
file_offs, blocklen,
&actual);
assert(rc == 0);
start += actual;
file_offs += actual;
}
if (free_routine) {
start = phystokv(m->mod_start);
free_routine(free_data, start, (end-start));
}
oskit_absio_release(thefilebuf);
oskit_file_sync(thefile, TRUE);
oskit_file_release(thefile);
}
return 0;
}
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