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/*
* Copyright (c) 2007 Vreixo Formoso
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See COPYING file for details.
*/
#include "builder.h"
#include "node.h"
#include "fsource.h"
#include <stdlib.h>
#include <string.h>
#include <limits.h>
void iso_node_builder_ref(IsoNodeBuilder *builder)
{
++builder->refcount;
}
void iso_node_builder_unref(IsoNodeBuilder *builder)
{
if (--builder->refcount == 0) {
/* free private data */
builder->free(builder);
free(builder);
}
}
static
int default_create_file(IsoNodeBuilder *builder, IsoImage *image,
IsoFileSource *src, IsoFile **file)
{
int ret;
struct stat info;
IsoStream *stream;
IsoFile *node;
char *name;
if (builder == NULL || src == NULL || file == NULL) {
return ISO_NULL_POINTER;
}
ret = iso_file_source_stat(src, &info);
if (ret < 0) {
return ret;
}
/* this will fail if src is a dir, is not accessible... */
ret = iso_file_source_stream_new(src, &stream);
if (ret < 0) {
return ret;
}
/* take a ref to the src, as stream has taken our ref */
iso_file_source_ref(src);
name = iso_file_source_get_name(src);
ret = iso_node_new_file(name, stream, &node);
if (ret < 0) {
iso_stream_unref(stream);
free(name);
return ret;
}
/* fill node fields */
iso_node_set_permissions((IsoNode*)node, info.st_mode);
iso_node_set_uid((IsoNode*)node, info.st_uid);
iso_node_set_gid((IsoNode*)node, info.st_gid);
iso_node_set_atime((IsoNode*)node, info.st_atime);
iso_node_set_mtime((IsoNode*)node, info.st_mtime);
iso_node_set_ctime((IsoNode*)node, info.st_ctime);
iso_node_set_uid((IsoNode*)node, info.st_uid);
*file = node;
return ISO_SUCCESS;
}
static
int default_create_node(IsoNodeBuilder *builder, IsoImage *image,
IsoFileSource *src, IsoNode **node)
{
int ret;
struct stat info;
IsoNode *new;
char *name;
if (builder == NULL || src == NULL || node == NULL) {
return ISO_NULL_POINTER;
}
/* get info about source */
if (iso_tree_get_follow_symlinks(image)) {
ret = iso_file_source_stat(src, &info);
} else {
ret = iso_file_source_lstat(src, &info);
}
if (ret < 0) {
return ret;
}
name = iso_file_source_get_name(src);
new = NULL;
switch (info.st_mode & S_IFMT) {
case S_IFREG:
{
/* source is a regular file */
IsoStream *stream;
IsoFile *file;
ret = iso_file_source_stream_new(src, &stream);
if (ret < 0) {
break;
}
/* take a ref to the src, as stream has taken our ref */
iso_file_source_ref(src);
/* create the file */
ret = iso_node_new_file(name, stream, &file);
if (ret < 0) {
iso_stream_unref(stream);
}
new = (IsoNode*) file;
}
break;
case S_IFDIR:
{
/* source is a directory */
IsoDir *dir;
ret = iso_node_new_dir(name, &dir);
new = (IsoNode*)dir;
}
break;
case S_IFLNK:
{
/* source is a symbolic link */
char dest[PATH_MAX];
IsoSymlink *link;
ret = iso_file_source_readlink(src, dest, PATH_MAX);
if (ret < 0) {
break;
}
ret = iso_node_new_symlink(name, strdup(dest), &link);
new = (IsoNode*) link;
}
break;
case S_IFSOCK:
case S_IFBLK:
case S_IFCHR:
case S_IFIFO:
{
/* source is an special file */
IsoSpecial *special;
ret = iso_node_new_special(name, info.st_mode, info.st_rdev,
&special);
new = (IsoNode*) special;
}
break;
}
if (ret < 0) {
free(name);
return ret;
}
/* fill fields */
iso_node_set_permissions(new, info.st_mode);
iso_node_set_uid(new, info.st_uid);
iso_node_set_gid(new, info.st_gid);
iso_node_set_atime(new, info.st_atime);
iso_node_set_mtime(new, info.st_mtime);
iso_node_set_ctime(new, info.st_ctime);
iso_node_set_uid(new, info.st_uid);
*node = new;
return ISO_SUCCESS;
}
static
void default_free(IsoNodeBuilder *builder)
{
return;
}
int iso_node_basic_builder_new(IsoNodeBuilder **builder)
{
IsoNodeBuilder *b;
if (builder == NULL) {
return ISO_NULL_POINTER;
}
b = malloc(sizeof(IsoNodeBuilder));
if (b == NULL) {
return ISO_OUT_OF_MEM;
}
b->refcount = 1;
b->create_file_data = NULL;
b->create_node_data = NULL;
b->create_file = default_create_file;
b->create_node = default_create_node;
b->free = default_free;
*builder = b;
return ISO_SUCCESS;
}