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-rw-r--r--lib/fstree/node_from_path.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/fstree/node_from_path.c b/lib/fstree/node_from_path.c
new file mode 100644
index 0000000..e617059
--- /dev/null
+++ b/lib/fstree/node_from_path.c
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+#include "fstree.h"
+
+#include <string.h>
+#include <errno.h>
+
+tree_node_t *fstree_node_from_path(fstree_t *fs, const char *path)
+{
+ tree_node_t *n = fs->root;
+ const char *end;
+ size_t len;
+
+ while (path != NULL && *path != '\0') {
+ if (!S_ISDIR(n->mode)) {
+ errno = ENOTDIR;
+ return NULL;
+ }
+
+ end = strchrnul(path, '/');
+ len = end - path;
+
+ for (n = n->data.dir->children; n != NULL; n = n->next) {
+ if (strncmp(path, n->name, len) != 0)
+ continue;
+ if (n->name[len] != '\0')
+ continue;
+ break;
+ }
+
+ if (n == NULL) {
+ errno = ENOENT;
+ return NULL;
+ }
+
+ path = *end ? (end + 1) : end;
+ }
+
+ return n;
+}