src/patches/dhcpcd/01_Fix_Linux_i386_for_SECCOMP_as_it_just_uses_socketcall.patch

   1 diff --git a/src/privsep-linux.c b/src/privsep-linux.c
   2 index 050a30cf..d31d720d 100644
   3 --- a/src/privsep-linux.c
   4 +++ b/src/privsep-linux.c
   5 @@ -32,6 +32,7 @@
   6
   7  #include <linux/audit.h>
   8  #include <linux/filter.h>
   9 +#include <linux/net.h>
  10  #include <linux/seccomp.h>
  11  #include <linux/sockios.h>
  12
  13 @@ -304,6 +305,23 @@ static struct sock_filter ps_seccomp_filter[] = {
  14  #ifdef __NR_sendto
  15         SECCOMP_ALLOW(__NR_sendto),
  16  #endif
  17 +#ifdef __NR_socketcall
  18 +       /* i386 needs this and demonstrates why SECCOMP
  19 +        * is poor compared to OpenBSD pledge(2) and FreeBSD capsicum(4)
  20 +        * as this is soooo tied to the kernel API which changes per arch
  21 +        * and likely libc as well. */
  22 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_ACCEPT),
  23 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_ACCEPT4),
  24 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_LISTEN),
  25 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_GETSOCKOPT),  /* overflow */
  26 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_RECV),
  27 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_RECVFROM),
  28 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_RECVMSG),
  29 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_SEND),
  30 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_SENDMSG),
  31 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_SENDTO),
  32 +       SECCOMP_ALLOW_ARG(__NR_socketcall, 0, SYS_SHUTDOWN),
  33 +#endif
  34  #ifdef __NR_shutdown
  35         SECCOMP_ALLOW(__NR_shutdown),
  36  #endif