svn commit: r366967 - head/sys/compat/linux

[Edward Tomasz Napierala]

Author: trasz
Date: Fri Oct 23 12:00:30 2020
New Revision: 366967
URL: https://svnweb.freebsd.org/changeset/base/366967

Log:
  Improve prctl(2) debug.
  
  MFC after:	2 weeks
  Sponsored by:	The FreeBSD Foundation
  Differential Revision:	https://reviews.freebsd.org/D26899

Modified:
  head/sys/compat/linux/linux_misc.c
  head/sys/compat/linux/linux_misc.h

Modified: head/sys/compat/linux/linux_misc.c
==============================================================================
--- head/sys/compat/linux/linux_misc.c	Fri Oct 23 11:57:55 2020	(r366966)
+++ head/sys/compat/linux/linux_misc.c	Fri Oct 23 12:00:30 2020	(r366967)
@@ -2001,7 +2001,15 @@ linux_prctl(struct thread *td, struct linux_prctl_args
 		error = copyout(comm, (void *)(register_t)args->arg2,
 		    strlen(comm) + 1);
 		break;
+	case LINUX_PR_GET_SECCOMP:
+	case LINUX_PR_SET_SECCOMP:
+		/*
+		 * Same as returned by Linux without CONFIG_SECCOMP enabled.
+		 */
+		error = EINVAL;
+		break;
 	default:
+		linux_msg(td, "unsupported prctl option %d", args->option);
 		error = EINVAL;
 		break;
 	}

Modified: head/sys/compat/linux/linux_misc.h
==============================================================================
--- head/sys/compat/linux/linux_misc.h	Fri Oct 23 11:57:55 2020	(r366966)
+++ head/sys/compat/linux/linux_misc.h	Fri Oct 23 12:00:30 2020	(r366967)
@@ -54,6 +54,8 @@
 #define	LINUX_PR_SET_KEEPCAPS	8	/* Set drop capabilities on setuid */
 #define	LINUX_PR_SET_NAME	15	/* Set process name. */
 #define	LINUX_PR_GET_NAME	16	/* Get process name. */
+#define	LINUX_PR_GET_SECCOMP	21
+#define	LINUX_PR_SET_SECCOMP	22
 
 #define	LINUX_MAX_COMM_LEN	16	/* Maximum length of the process name. */