1 files changed, 72 insertions, 0 deletions
diff --git a/lib/fstree/mknode.c b/lib/fstree/mknode.c
new file mode 100644
index 0000000..247e2b5
--- /dev/null
+++ b/lib/fstree/mknode.c
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+#include "fstree.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+tree_node_t *fstree_mknode(fstree_t *fs, tree_node_t *parent, const char *name,
+			   size_t name_len, const char *extra,
+			   const struct stat *sb)
+{
+	size_t size = sizeof(tree_node_t);
+	tree_node_t *n;
+	char *ptr;
+
+	switch (sb->st_mode & S_IFMT) {
+	case S_IFLNK:
+		size += strlen(extra) + 1;
+		break;
+	case S_IFDIR:
+		size += sizeof(*n->data.dir);
+		break;
+	case S_IFREG:
+		size += sizeof(*n->data.file);
+		size += (sb->st_size / fs->block_size) * sizeof(uint32_t);
+		if (extra != NULL)
+			size += strlen(extra) + 1;
+		break;
+	}
+
+	n = calloc(1, size + name_len + 1);
+	if (n == NULL)
+		return NULL;
+
+	if (parent != NULL) {
+		n->next = parent->data.dir->children;
+		parent->data.dir->children = n;
+		n->parent = parent;
+	}
+
+	n->uid = sb->st_uid;
+	n->gid = sb->st_gid;
+	n->mode = sb->st_mode;
+
+	switch (sb->st_mode & S_IFMT) {
+	case S_IFDIR:
+		n->data.dir = (dir_info_t *)n->payload;
+		break;
+	case S_IFREG:
+		n->data.file = (file_info_t *)n->payload;
+		n->data.file->size = sb->st_size;
+		if (extra == NULL)
+			break;
+
+		ptr = (char *)n->data.file->blocksizes;
+		ptr += (sb->st_size / fs->block_size) * sizeof(uint32_t);
+		n->data.file->input_file = ptr;
+		strcpy(n->data.file->input_file, extra);
+		break;
+	case S_IFLNK:
+		n->data.slink_target = (char *)n->payload;
+		strcpy(n->data.slink_target, extra);
+		break;
+	case S_IFBLK:
+	case S_IFCHR:
+		n->data.devno = sb->st_rdev;
+		break;
+	}
+
+	n->name = (char *)n + size;
+	memcpy(n->name, name, name_len);
+	return n;
+}