From 5a28b069c4e37723aebbc80fe1c577a80931cd87 Mon Sep 17 00:00:00 2001
From: CismonX <admin@cismon.net>
Date: Tue, 29 Apr 2025 14:48:39 +0800
Subject: [PATCH] fs_ops: fix file size opened with O_CREAT|O_TRUNC

Also make sure that new regular files always have a size of zero.
---
 src/backend_firefox.c | 5 ++---
 src/fs_ops.c          | 6 ++++++
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/backend_firefox.c b/src/backend_firefox.c
index c97b47b..5666d86 100644
--- a/src/backend_firefox.c
+++ b/src/backend_firefox.c
@@ -398,9 +398,8 @@ bookmark_do_create (
     stat_buf->value_len = -1;
     int64_t place_id = 0;
     if (!is_dir) {
-        char const *url = "about:blank";
-        stat_buf->value_len = strlen(url);
-        status = mozplace_addref(ctx, url, stat_buf->value_len, &place_id,
+        stat_buf->value_len = 0;
+        status = mozplace_addref(ctx, STR_WITHLEN("about:blank"), &place_id,
                 &stat_buf->atime);
         if (status < 0) {
             return status;
diff --git a/src/fs_ops.c b/src/fs_ops.c
index b88eb13..11791c2 100644
--- a/src/fs_ops.c
+++ b/src/fs_ops.c
@@ -409,6 +409,12 @@ bm_create (
         }
     }
 
+    if (flags & O_TRUNC) {
+        // See bm_open() for comments on O_RDONLY|O_TRUNC.
+        if ((flags & O_ACCMODE) != O_RDONLY) {
+            stat.value_len = 0;
+        }
+    }
     bm_fillstat(&stat, SUBSYS_TYPE_BOOKMARK, false, stat_buf);
     return 0;
 }