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/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* write_inode.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "config.h"
#include "highlevel.h"
#include "sqfs/inode.h"
#include "sqfs/dir.h"
#include "util.h"
#include <assert.h>
#include <endian.h>
#include <stdlib.h>
#include <string.h>
static int get_type(tree_node_t *node)
{
switch (node->mode & S_IFMT) {
case S_IFSOCK:
if (node->xattr != NULL)
return SQFS_INODE_EXT_SOCKET;
return SQFS_INODE_SOCKET;
case S_IFIFO:
if (node->xattr != NULL)
return SQFS_INODE_EXT_FIFO;
return SQFS_INODE_FIFO;
case S_IFLNK:
if (node->xattr != NULL)
return SQFS_INODE_EXT_SLINK;
return SQFS_INODE_SLINK;
case S_IFBLK:
if (node->xattr != NULL)
return SQFS_INODE_EXT_BDEV;
return SQFS_INODE_BDEV;
case S_IFCHR:
if (node->xattr != NULL)
return SQFS_INODE_EXT_CDEV;
return SQFS_INODE_CDEV;
}
assert(0);
}
sqfs_inode_generic_t *tree_node_to_inode(sqfs_id_table_t *idtbl,
tree_node_t *node)
{
sqfs_inode_generic_t *inode;
uint16_t uid_idx, gid_idx;
uint32_t xattr = 0xFFFFFFFF;
size_t extra = 0;
if (S_ISREG(node->mode)) {
inode = node->data.file->user_ptr;
node->data.file->user_ptr = NULL;
} else {
if (S_ISLNK(node->mode))
extra = strlen(node->data.slink_target);
inode = alloc_flex(sizeof(*inode), 1, extra);
if (inode == NULL) {
perror("creating inode from file system tree node");
return NULL;
}
if (S_ISLNK(node->mode)) {
inode->slink_target = (char *)inode->extra;
memcpy(inode->extra, node->data.slink_target, extra);
}
inode->base.type = get_type(node);
}
if (sqfs_id_table_id_to_index(idtbl, node->uid, &uid_idx))
goto fail;
if (sqfs_id_table_id_to_index(idtbl, node->gid, &gid_idx))
goto fail;
if (node->xattr != NULL)
xattr = node->xattr->index;
inode->base.mode = node->mode;
inode->base.uid_idx = uid_idx;
inode->base.gid_idx = gid_idx;
inode->base.mod_time = node->mod_time;
inode->base.inode_number = node->inode_num;
switch (inode->base.type) {
case SQFS_INODE_FIFO:
case SQFS_INODE_SOCKET:
inode->data.ipc.nlink = 1;
break;
case SQFS_INODE_EXT_FIFO:
case SQFS_INODE_EXT_SOCKET:
inode->data.ipc_ext.nlink = 1;
inode->data.ipc_ext.xattr_idx = xattr;
break;
case SQFS_INODE_SLINK:
inode->data.slink.nlink = 1;
inode->data.slink.target_size = extra;
break;
case SQFS_INODE_EXT_SLINK:
inode->data.slink_ext.nlink = 1;
inode->data.slink_ext.target_size = extra;
inode->data.slink_ext.xattr_idx = xattr;
break;
case SQFS_INODE_BDEV:
case SQFS_INODE_CDEV:
inode->data.dev.nlink = 1;
inode->data.dev.devno = node->data.devno;
break;
case SQFS_INODE_EXT_BDEV:
case SQFS_INODE_EXT_CDEV:
inode->data.dev_ext.nlink = 1;
inode->data.dev_ext.devno = node->data.devno;
inode->data.dev_ext.xattr_idx = xattr;
break;
case SQFS_INODE_FILE:
if (xattr != 0xFFFFFFFF) {
sqfs_inode_make_extended(inode);
inode->data.file_ext.xattr_idx = xattr;
}
break;
case SQFS_INODE_EXT_FILE:
break;
default:
goto fail;
}
return inode;
fail:
free(inode);
return NULL;
}
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