cred: add auto cleanup method

brauner · brauner · commit 377d7860c960 · 2025-07-07T12:24:50.000+02:00
Add a simple auto cleanup method for struct cred. Link: https://lore.kernel.org/20250612-work-coredump-massage-v1-19-315c0c34ba94@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>
diff --git a/include/linux/cred.h b/include/linux/cred.h
@@ -263,6 +263,8 @@ static inline void put_cred(const struct cred *cred)
 	put_cred_many(cred, 1);
 }
 
+DEFINE_FREE(put_cred, struct cred *, if (!IS_ERR_OR_NULL(_T)) put_cred(_T))
+
 /**
  * current_cred - Access the current task's subjective credentials
  *

Original file line number	Diff line number	Diff line change
`@@ -263,6 +263,8 @@ static inline void put_cred(const struct cred *cred)`
`263`	`263`	`put_cred_many(cred, 1);`
`264`	`264`	`}`
`265`	`265`
	`266`	`+DEFINE_FREE(put_cred, struct cred *, if (!IS_ERR_OR_NULL(_T)) put_cred(_T))`
	`267`	`+`
`266`	`268`	`/**`
`267`	`269`	`* current_cred - Access the current task's subjective credentials`
`268`	`270`	`*`