minix/usr.sbin/makefs/chfs.c
Jean-Baptiste Boric 9f988b7934 Import makefs from NetBSD
Change-Id: I0ebcc9d0168df9d26cfb0af0fce2bc894ce688af
2015-10-07 12:39:44 +02:00

222 lines
5.6 KiB
C

/*-
* Copyright (c) 2012 Department of Software Engineering,
* University of Szeged, Hungary
* Copyright (c) 2012 Tamas Toth <ttoth@inf.u-szeged.hu>
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by the Department of Software Engineering, University of Szeged, Hungary
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/param.h>
#include <assert.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include "makefs.h"
#include "chfs_makefs.h"
#include "chfs/chfs_mkfs.h"
static void chfs_validate(const char *, fsnode *, fsinfo_t *);
static int chfs_create_image(const char *, fsinfo_t *);
static int chfs_populate_dir(const char *, fsnode *, fsnode *, fsinfo_t *);
void
chfs_prep_opts(fsinfo_t *fsopts)
{
chfs_opt_t *chfs_opts = ecalloc(1, sizeof(*chfs_opts));
const option_t chfs_options[] = {
{ 'p', "pagesize", &chfs_opts->pagesize, OPT_INT32,
1, INT_MAX, "page size" },
{ 'e', "eraseblock", &chfs_opts->eraseblock, OPT_INT32,
1, INT_MAX, "eraseblock size" },
{ 'm', "mediatype", &chfs_opts->mediatype, OPT_INT32,
0, 1, "type of the media, 0 (nor) or 1 (nand)" },
{ .name = NULL }
};
chfs_opts->pagesize = -1;
chfs_opts->eraseblock = -1;
chfs_opts->mediatype = -1;
fsopts->size = 0;
fsopts->fs_specific = chfs_opts;
fsopts->fs_options = copy_opts(chfs_options);
}
void
chfs_cleanup_opts(fsinfo_t *fsopts)
{
free(fsopts->fs_specific);
free(fsopts->fs_options);
}
int
chfs_parse_opts(const char *option, fsinfo_t *fsopts)
{
assert(option != NULL);
assert(fsopts != NULL);
return set_option(fsopts->fs_options, option, NULL, 0) != -1;
}
void
chfs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts)
{
struct timeval start;
assert(image != NULL);
assert(dir != NULL);
assert(root != NULL);
assert(fsopts != NULL);
TIMER_START(start);
chfs_validate(dir, root, fsopts);
TIMER_RESULTS(start, "chfs_validate");
printf("Creating `%s'\n", image);
TIMER_START(start);
if (chfs_create_image(image, fsopts) == -1) {
errx(EXIT_FAILURE, "Image file `%s' not created", image);
}
TIMER_RESULTS(start, "chfs_create_image");
fsopts->curinode = CHFS_ROOTINO;
root->inode->ino = CHFS_ROOTINO;
printf("Populating `%s'\n", image);
TIMER_START(start);
write_eb_header(fsopts);
if (!chfs_populate_dir(dir, root, root, fsopts)) {
errx(EXIT_FAILURE, "Image file `%s' not populated", image);
}
TIMER_RESULTS(start, "chfs_populate_dir");
padblock(fsopts);
if (close(fsopts->fd) == -1) {
err(EXIT_FAILURE, "Closing `%s'", image);
}
fsopts->fd = -1;
printf("Image `%s' complete\n", image);
}
static void
chfs_validate(const char* dir, fsnode *root, fsinfo_t *fsopts)
{
chfs_opt_t *chfs_opts;
assert(dir != NULL);
assert(root != NULL);
assert(fsopts != NULL);
chfs_opts = fsopts->fs_specific;
if (chfs_opts->pagesize == -1) {
chfs_opts->pagesize = DEFAULT_PAGESIZE;
}
if (chfs_opts->eraseblock == -1) {
chfs_opts->eraseblock = DEFAULT_ERASEBLOCK;
}
if (chfs_opts->mediatype == -1) {
chfs_opts->mediatype = DEFAULT_MEDIATYPE;
}
}
static int
chfs_create_image(const char *image, fsinfo_t *fsopts)
{
assert(image != NULL);
assert(fsopts != NULL);
if ((fsopts->fd = open(image, O_RDWR | O_CREAT | O_TRUNC, 0666)) == -1) {
warn("Can't open `%s' for writing", image);
return -1;
}
return fsopts->fd;
}
static int
chfs_populate_dir(const char *dir, fsnode *root, fsnode *parent,
fsinfo_t *fsopts)
{
fsnode *cur;
char path[MAXPATHLEN + 1];
assert(dir != NULL);
assert(root != NULL);
assert(fsopts != NULL);
for (cur = root->next; cur != NULL; cur = cur->next) {
if ((cur->inode->flags & FI_ALLOCATED) == 0) {
cur->inode->flags |= FI_ALLOCATED;
if (cur != root) {
fsopts->curinode++;
cur->inode->ino = fsopts->curinode;
cur->parent = parent;
}
}
if (cur->inode->flags & FI_WRITTEN) {
continue; // hard link
}
cur->inode->flags |= FI_WRITTEN;
write_vnode(fsopts, cur);
write_dirent(fsopts, cur);
if (!S_ISDIR(cur->type & S_IFMT)) {
write_file(fsopts, cur, dir);
}
}
for (cur = root; cur != NULL; cur = cur->next) {
if (cur->child == NULL) {
continue;
}
if ((size_t)snprintf(path, sizeof(path), "%s/%s", dir,
cur->name) >= sizeof(path)) {
errx(EXIT_FAILURE, "Pathname too long");
}
if (!chfs_populate_dir(path, cur->child, cur, fsopts)) {
return 0;
}
}
return 1;
}