Move tree_node_to_inode function to fstree serialization code

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 106 insertions, 0 deletions

diff --git a/lib/sqfshelper/serialize_fstree.c b/lib/sqfshelper/serialize_fstree.c
index 854231c..2786789 100644
--- a/lib/sqfshelper/serialize_fstree.c
+++ b/lib/sqfshelper/serialize_fstree.c
@@ -7,13 +7,119 @@
 #include "config.h"
 
 #include "sqfs/meta_writer.h"
+#include "sqfs/inode.h"
+#include "sqfs/dir.h"
+
 #include "highlevel.h"
 #include "util.h"
 
+#include <assert.h>
 #include <unistd.h>
 #include <stdlib.h>
+#include <string.h>
 #include <stdio.h>
 
+static int get_type(tree_node_t *node)
+{
+	switch (node->mode & S_IFMT) {
+	case S_IFSOCK: return SQFS_INODE_SOCKET;
+	case S_IFIFO: return SQFS_INODE_FIFO;
+	case S_IFLNK: return SQFS_INODE_SLINK;
+	case S_IFBLK: return SQFS_INODE_BDEV;
+	case S_IFCHR: return SQFS_INODE_CDEV;
+	}
+	assert(0);
+}
+
+static sqfs_inode_generic_t *tree_node_to_inode(sqfs_id_table_t *idtbl,
+						tree_node_t *node)
+{
+	sqfs_inode_generic_t *inode;
+	sqfs_u16 uid_idx, gid_idx;
+	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_idx != 0xFFFFFFFF)
+		sqfs_inode_make_extended(inode);
+
+	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 = node->xattr_idx;
+		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 = node->xattr_idx;
+		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 = node->xattr_idx;
+		break;
+	case SQFS_INODE_FILE:
+		break;
+	case SQFS_INODE_EXT_FILE:
+		inode->data.file_ext.xattr_idx = node->xattr_idx;
+		break;
+	default:
+		goto fail;
+	}
+
+	return inode;
+fail:
+	free(inode);
+	return NULL;
+}
+
 static sqfs_inode_generic_t *write_dir_entries(sqfs_dir_writer_t *dirw,
 					       tree_node_t *node,
 					       sqfs_id_table_t *idtbl)