From 0876ffb05e6973601ef1e930f1ed8d939666132a Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Thu, 26 Aug 2021 22:05:06 +0200
Subject: separate mount resolving into vfs_mount_resolve

---
 src/kernel/vfs/mount.c | 13 +++++++++++++
 src/kernel/vfs/mount.h |  3 +++
 2 files changed, 16 insertions(+)

(limited to 'src/kernel/vfs')

diff --git a/src/kernel/vfs/mount.c b/src/kernel/vfs/mount.c
index be33b6b..bf98957 100644
--- a/src/kernel/vfs/mount.c
+++ b/src/kernel/vfs/mount.c
@@ -1,4 +1,5 @@
 #include <kernel/mem.h>
+#include <kernel/util.h>
 #include <kernel/vfs/mount.h>
 
 struct vfs_mount *vfs_mount_seed(void) {
@@ -13,3 +14,15 @@ struct vfs_mount *vfs_mount_seed(void) {
 	};
 	return mount;
 }
+
+struct vfs_mount *vfs_mount_resolve(
+		struct vfs_mount *top, const char *path, size_t path_len)
+{
+	for (; top; top = top->prev) {
+		if (top->prefix_len > path_len)
+			continue;
+		if (memcmp(top->prefix, path, top->prefix_len) == 0)
+			break;
+	}
+	return top;
+}
diff --git a/src/kernel/vfs/mount.h b/src/kernel/vfs/mount.h
index 982f951..51990a1 100644
--- a/src/kernel/vfs/mount.h
+++ b/src/kernel/vfs/mount.h
@@ -10,3 +10,6 @@ struct vfs_mount {
 
 // prepares init's filesystem view
 struct vfs_mount *vfs_mount_seed(void);
+struct vfs_mount *vfs_mount_resolve(
+		struct vfs_mount *top, const char *path, size_t path_len);
+
-- 
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