diff options
| author | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2021-07-03 07:41:59 +0000 |
|---|---|---|
| committer | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2021-07-03 07:42:37 +0000 |
| commit | 2f514e6f13de41aa9ad5f563ed0decc66e91f99c (patch) | |
| tree | e2872ad3514ae70433c97c45446cdfa84a5175a1 | |
| parent | 45d99014ca3a57fcc6b603cf4494516b4dadda1b (diff) | |
| download | src-2f514e6f13de41aa9ad5f563ed0decc66e91f99c.tar.gz src-2f514e6f13de41aa9ad5f563ed0decc66e91f99c.zip | |
linux(4): implement PR_SET_NO_NEW_PRIVS
This makes prctl(2) support PR_SET_NO_NEW_PRIVS, by mapping it
to the native PROC_NO_NEW_PRIVS_CTL procctl(2).
Sponsored By: EPSRC
Differential Revision: https://reviews.freebsd.org/D30973
| -rw-r--r-- | sys/compat/linux/linux_misc.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sys/compat/linux/linux_misc.c b/sys/compat/linux/linux_misc.c index 65a5b0dd24d7..559eb6463da0 100644 --- a/sys/compat/linux/linux_misc.c +++ b/sys/compat/linux/linux_misc.c @@ -1982,7 +1982,7 @@ linux_capset(struct thread *td, struct linux_capset_args *uap) int linux_prctl(struct thread *td, struct linux_prctl_args *args) { - int error = 0, max_size; + int error = 0, max_size, arg; struct proc *p = td->td_proc; char comm[LINUX_MAX_COMM_LEN]; int pdeath_signal, trace_state; @@ -2113,8 +2113,10 @@ linux_prctl(struct thread *td, struct linux_prctl_args *args) error = EINVAL; break; case LINUX_PR_SET_NO_NEW_PRIVS: - linux_msg(td, "unsupported prctl PR_SET_NO_NEW_PRIVS"); - error = EINVAL; + arg = args->arg2 == 1 ? + PROC_NO_NEW_PRIVS_ENABLE : PROC_NO_NEW_PRIVS_DISABLE; + error = kern_procctl(td, P_PID, p->p_pid, + PROC_NO_NEW_PRIVS_CTL, &arg); break; case LINUX_PR_SET_PTRACER: linux_msg(td, "unsupported prctl PR_SET_PTRACER"); |