sys_linux: allow writev and TIOCGWINSZ in seccomp filter

Allow more syscalls for musl.

Reported-by: jvoisin <julien.voisin@dustri.org>

diff --git a/sys_linux.c b/sys_linux.c
index c6cb45378ebbcaa26175bea907214656650a5b93..68496375edb416cebaa3c29b379ad3ac257dd460 100644 (file)
--- a/sys_linux.c
+++ b/sys_linux.c
@@ -603,6 +603,7 @@ SYS_Linux_EnableSystemCallFilter(int level, SYS_ProcessContext context)
     SCMP_SYS(select),
     SCMP_SYS(set_robust_list),
     SCMP_SYS(write),
+    SCMP_SYS(writev),
 
     /* Miscellaneous */
     SCMP_SYS(getrandom),
@@ -657,7 +658,7 @@ SYS_Linux_EnableSystemCallFilter(int level, SYS_ProcessContext context)
   const static int fcntls[] = { F_GETFD, F_SETFD, F_GETFL, F_SETFL };
 
   const static unsigned long ioctls[] = {
-    FIONREAD, TCGETS,
+    FIONREAD, TCGETS, TIOCGWINSZ,
 #if defined(FEAT_PHC) || defined(HAVE_LINUX_TIMESTAMPING)
     PTP_EXTTS_REQUEST, PTP_SYS_OFFSET,
 #ifdef PTP_PIN_SETFUNC