git: 2c029214d33a - stable/13 - linux(4): Return ENOSYS for unsupported P_PIDFD waitid idtype.

The branch stable/13 has been updated by dchagin:

URL: https://cgit.FreeBSD.org/src/commit/?id=2c029214d33a5947578cb78ba3a52399d0958c3f

commit 2c029214d33a5947578cb78ba3a52399d0958c3f
Author:     Dmitry Chagin <dchagin@FreeBSD.org>
AuthorDate: 2022-03-31 17:42:42 +0000
Commit:     Dmitry Chagin <dchagin@FreeBSD.org>
CommitDate: 2022-06-17 19:33:45 +0000

    linux(4): Return ENOSYS for unsupported P_PIDFD waitid idtype.
    
    Reviewed by:            emaste
    Differential revision:  https://reviews.freebsd.org/D31559
    MFC after:              2 weeks
    
    (cherry picked from commit be1e4a0bdf45da4bbdce996d2146eba3e32b3766)
---
 sys/compat/linux/linux_misc.c | 3 +++
 sys/compat/linux/linux_misc.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c
index b761917b2dc9..9a176c15f93d 100644
--- a/sys/compat/linux/linux_misc.c
+++ b/sys/compat/linux/linux_misc.c
@@ -1122,6 +1122,9 @@ linux_waitid(struct thread *td, struct linux_waitid_args *args)
 			return (EINVAL);
 		idtype = P_PGID;
 		break;
+	case LINUX_P_PIDFD:
+		LINUX_RATELIMIT_MSG("unsupported waitid P_PIDFD idtype");
+		return (ENOSYS);
 	default:
 		return (EINVAL);
 	}
diff --git a/sys/compat/linux/linux_misc.h b/sys/compat/linux/linux_misc.h
index 9a7cf89466a2..a2dd5eb9f82b 100644
--- a/sys/compat/linux/linux_misc.h
+++ b/sys/compat/linux/linux_misc.h
@@ -136,6 +136,7 @@ extern int stclohz;
 #define	LINUX_P_ALL		0
 #define	LINUX_P_PID		1
 #define	LINUX_P_PGID		2
+#define	LINUX_P_PIDFD		3
 
 #define	LINUX_RLIMIT_LOCKS	10
 #define	LINUX_RLIMIT_SIGPENDING	11