diff options
| author | Ting-Yu Wang <anivia@google.com> | 2020-07-15 15:04:10 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-07-15 15:05:32 -0700 |
| commit | db653bb34baeba24b8b658eb0985e4c5185344cb (patch) | |
| tree | a71ac8d63cfc06983b94d7c4aca40ec5272baf0c /runsc | |
| parent | 857d03f258ffafb815698917f2a1ee9e7e265464 (diff) | |
fdbased: Vectorized write for packet; relax writev syscall filter.
Now it calls pkt.Data.ToView() when writing the packet. This may require
copying when the packet is large, which puts the worse case in an even worse
situation.
This sent out in a separate preparation change as it requires syscall filter
changes. This change will be followed by the change for the adoption of the new
PacketHeader API.
PiperOrigin-RevId: 321447003
Diffstat (limited to 'runsc')
| -rw-r--r-- | runsc/boot/filter/config.go | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/runsc/boot/filter/config.go b/runsc/boot/filter/config.go index 60e33425f..149eb0b1b 100644 --- a/runsc/boot/filter/config.go +++ b/runsc/boot/filter/config.go @@ -310,19 +310,12 @@ var allowedSyscalls = seccomp.SyscallRules{ }, }, syscall.SYS_WRITE: {}, - // The only user in rawfile.NonBlockingWrite3 always passes iovcnt with - // values 2 or 3. Three iovec-s are passed, when the PACKET_VNET_HDR - // option is enabled for a packet socket. + // For rawfile.NonBlockingWriteIovec. syscall.SYS_WRITEV: []seccomp.Rule{ { seccomp.AllowAny{}, seccomp.AllowAny{}, - seccomp.AllowValue(2), - }, - { - seccomp.AllowAny{}, - seccomp.AllowAny{}, - seccomp.AllowValue(3), + seccomp.GreaterThan(0), }, }, } |