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| author | Wen Yang <wenyang.linux@foxmail.com> | 2024-01-10 23:47:40 +0800 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-01-22 15:33:36 +0100 |
| commit | 6b6ec4ca4e33d797f887cb2d7ecf365b652b338c (patch) | |
| tree | d8876c96f67d7bbeface8709d8af369fd9fe3eab /fs/eventfd.c | |
| parent | 6c8ac6e24eb04d1eebc442029d7a7528e5461cb8 (diff) | |
| download | linux-6b6ec4ca4e33d797f887cb2d7ecf365b652b338c.tar.gz | |
eventfd: add a BUILD_BUG_ON() to ensure consistency between EFD_SEMAPHORE and the uapi
introduce a BUILD_BUG_ON to check that the EFD_SEMAPHORE is equal to its
definition in the uapi file, just like EFD_CLOEXEC and EFD_NONBLOCK.
Signed-off-by: Wen Yang <wenyang.linux@foxmail.com>
Link: https://lore.kernel.org/r/tencent_0BAA2DEAF9208D49987457E6583F9BE79507@qq.com
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/eventfd.c')
| -rw-r--r-- | fs/eventfd.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/eventfd.c b/fs/eventfd.c index ad8186d47ba76..0252b71099fbc 100644 --- a/fs/eventfd.c +++ b/fs/eventfd.c @@ -383,6 +383,7 @@ static int do_eventfd(unsigned int count, int flags) /* Check the EFD_* constants for consistency. */ BUILD_BUG_ON(EFD_CLOEXEC != O_CLOEXEC); BUILD_BUG_ON(EFD_NONBLOCK != O_NONBLOCK); + BUILD_BUG_ON(EFD_SEMAPHORE != (1 << 0)); if (flags & ~EFD_FLAGS_SET) return -EINVAL; |