From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Sat, 21 Mar 2026 21:05:47 +0000 (+0100)
Subject: fanotify: replace deprecated strcpy in fanotify_info_copy_{name,name2}
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0fdbe845534f4e0b7243b7a44562c4486ce25fb4;p=thirdparty%2Fkernel%2Flinux.git

fanotify: replace deprecated strcpy in fanotify_info_copy_{name,name2}

strcpy() has been deprecated [1] because it performs no bounds checking
on the destination buffer, which can lead to buffer overflows. Replace
it with the safer strscpy().

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20260321210544.519259-4-thorsten.blum@linux.dev
Signed-off-by: Jan Kara <jack@suse.cz>
---

diff --git a/fs/notify/fanotify/fanotify.h b/fs/notify/fanotify/fanotify.h
index 39e60218df7ce..a0619e7694d57 100644
--- a/fs/notify/fanotify/fanotify.h
+++ b/fs/notify/fanotify/fanotify.h
@@ -2,6 +2,7 @@
 #include <linux/fsnotify_backend.h>
 #include <linux/path.h>
 #include <linux/slab.h>
+#include <linux/string.h>
 #include <linux/exportfs.h>
 #include <linux/hashtable.h>
 
@@ -218,7 +219,7 @@ static inline void fanotify_info_copy_name(struct fanotify_info *info,
 		return;
 
 	info->name_len = name->len;
-	strcpy(fanotify_info_name(info), name->name);
+	strscpy(fanotify_info_name(info), name->name, name->len + 1);
 }
 
 static inline void fanotify_info_copy_name2(struct fanotify_info *info,
@@ -228,7 +229,7 @@ static inline void fanotify_info_copy_name2(struct fanotify_info *info,
 		return;
 
 	info->name2_len = name->len;
-	strcpy(fanotify_info_name2(info), name->name);
+	strscpy(fanotify_info_name2(info), name->name, name->len + 1);
 }
 
 /*