From 1c7481377c7aca0261382636819e8a8ab886c247 Mon Sep 17 00:00:00 2001 From: Edward Tomasz Napierala Date: Fri, 23 Oct 2020 12:00:30 +0000 Subject: [PATCH] Improve prctl(2) debug. MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D26899 --- sys/compat/linux/linux_misc.c | 8 ++++++++ sys/compat/linux/linux_misc.h | 2 ++ 2 files changed, 10 insertions(+) diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c index 936d2ab531ef..adff122a96de 100644 --- a/sys/compat/linux/linux_misc.c +++ b/sys/compat/linux/linux_misc.c @@ -2001,7 +2001,15 @@ linux_prctl(struct thread *td, struct linux_prctl_args *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; } diff --git a/sys/compat/linux/linux_misc.h b/sys/compat/linux/linux_misc.h index 2e804f109043..8181ad275cff 100644 --- a/sys/compat/linux/linux_misc.h +++ b/sys/compat/linux/linux_misc.h @@ -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. */