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-rw-r--r--lib/fstree/mknode.c72
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;
+}