diff options
| author | Luca Vizzarro <Luca.Vizzarro@arm.com> | 2023-04-14 16:24:58 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-18 16:30:11 -0700 |
| commit | f7b8f70ba44fb63df47b6fc3204d49ac2885de64 (patch) | |
| tree | e9f891a518dc48796dc7bae0d32f1190d935053e /include/linux/memfd.h | |
| parent | 7f63cf2d9b9bbe7b90f808927558a66ff737d399 (diff) | |
memfd: pass argument of memfd_fcntl as int
The interface for fcntl expects the argument passed for the command
F_ADD_SEALS to be of type int. The current code wrongly treats it as a
long. In order to avoid access to undefined bits, we should explicitly
cast the argument to int.
This commit changes the signature of all the related and helper functions
so that they treat the argument as int instead of long.
Link: https://lkml.kernel.org/r/20230414152459.816046-5-Luca.Vizzarro@arm.com
Signed-off-by: Luca Vizzarro <Luca.Vizzarro@arm.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jeff Layton <jlayton@kernel.org>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: Kevin Brodsky <Kevin.Brodsky@arm.com>
Cc: Vincenzo Frascino <Vincenzo.Frascino@arm.com>
Cc: Szabolcs Nagy <Szabolcs.Nagy@arm.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: David Laight <David.Laight@ACULAB.com>
Cc: Mark Rutland <Mark.Rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/memfd.h')
| -rw-r--r-- | include/linux/memfd.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/memfd.h b/include/linux/memfd.h index 4f1600413f91..e7abf6fa4c52 100644 --- a/include/linux/memfd.h +++ b/include/linux/memfd.h @@ -5,9 +5,9 @@ #include <linux/file.h> #ifdef CONFIG_MEMFD_CREATE -extern long memfd_fcntl(struct file *file, unsigned int cmd, unsigned long arg); +extern long memfd_fcntl(struct file *file, unsigned int cmd, unsigned int arg); #else -static inline long memfd_fcntl(struct file *f, unsigned int c, unsigned long a) +static inline long memfd_fcntl(struct file *f, unsigned int c, unsigned int a) { return -EINVAL; } |