From: Patrick Donnelly <pdonnell@ibm.com>
Date: Thu, 14 Nov 2024 18:33:11 +0000 (-0500)
Subject: include/filepath: add empty path check
X-Git-Tag: v20.0.0^2~58
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=e62fce4ec98ab03d9e71bd6e49bf2d8568a8fe71;p=ceph.git

include/filepath: add empty path check

When passing an empty string to filepath, it would test if the first character
is '/' which is an invalid access through std::string_view.

Signed-off-by: Patrick Donnelly <pdonnell@ibm.com>
Fixes: https://tracker.ceph.com/issues/66373
---

diff --git a/src/include/filepath.h b/src/include/filepath.h
index 0d2358128cfaf..9379cb583280f 100644
--- a/src/include/filepath.h
+++ b/src/include/filepath.h
@@ -98,7 +98,7 @@ class filepath {
     ino = b;
   }
   void set_path(std::string_view s) {
-    if (s[0] == '/') {
+    if (!s.empty() && s[0] == '/') {
       path = s.substr(1);
       ino = 1;
     } else {