diff options
| author | Christian Brauner <brauner@kernel.org> | 2025-03-05 11:08:16 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-03-05 13:26:17 +0100 |
| commit | 7477d7dce48a996ae4e4f0b5f7bd82de7ec9131b (patch) | |
| tree | db1c9c6bdbfb9add1035bed007f94d67198737e6 /include/uapi | |
| parent | 4513522984a0af9c170af991c37fbb483cca654b (diff) | |
pidfs: allow to retrieve exit information
Some tools like systemd's jounral need to retrieve the exit and cgroup
information after a process has already been reaped. This can e.g.,
happen when retrieving a pidfd via SCM_PIDFD or SCM_PEERPIDFD.
Link: https://lore.kernel.org/r/20250305-work-pidfs-kill_on_last_close-v3-6-c8c3d8361705@kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/pidfd.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/uapi/linux/pidfd.h b/include/uapi/linux/pidfd.h index e0abd0b18841..5cd5dcbfe884 100644 --- a/include/uapi/linux/pidfd.h +++ b/include/uapi/linux/pidfd.h @@ -20,6 +20,7 @@ #define PIDFD_INFO_PID (1UL << 0) /* Always returned, even if not requested */ #define PIDFD_INFO_CREDS (1UL << 1) /* Always returned, even if not requested */ #define PIDFD_INFO_CGROUPID (1UL << 2) /* Always returned if available, even if not requested */ +#define PIDFD_INFO_EXIT (1UL << 3) /* Only returned if requested. */ #define PIDFD_INFO_SIZE_VER0 64 /* sizeof first published struct */ @@ -86,7 +87,7 @@ struct pidfd_info { __u32 sgid; __u32 fsuid; __u32 fsgid; - __u32 spare0[1]; + __s32 exit_code; }; #define PIDFS_IOCTL_MAGIC 0xFF |