Re: [Qemu-devel] [PATCH 2/2] seccomp: removing unused syscalls gtom whitelist

[Paolo Bonzini <pbonzini@redhat.com>]

Il 15/07/2013 19:29, Eduardo Otubo ha scritto:
> Signed-off-by: Eduardo Otubo <otubo@linux.vnet.ibm.com>
> ---
>  qemu-seccomp.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/qemu-seccomp.c b/qemu-seccomp.c
> index 1d5fd71..bfd372a 100644
> --- a/qemu-seccomp.c
> +++ b/qemu-seccomp.c
> @@ -108,7 +108,6 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = {
>      { SCMP_SYS(lseek), 245 },
>      { SCMP_SYS(pselect6), 245 },
>      { SCMP_SYS(fork), 245 },
> -    { SCMP_SYS(eventfd), 245 },

ACK, the one we use is eventfd2

>      { SCMP_SYS(rt_sigprocmask), 245 },
>      { SCMP_SYS(write), 244 },
>      { SCMP_SYS(fcntl), 243 },
> @@ -125,7 +124,6 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = {
>      { SCMP_SYS(writev), 242 },
>      { SCMP_SYS(preadv), 242 },
>      { SCMP_SYS(pwritev), 242 },
> -    { SCMP_SYS(setrlimit), 242 },

Used by Xen.

>      { SCMP_SYS(ftruncate), 242 },
>      { SCMP_SYS(lstat), 242 },
>      { SCMP_SYS(pipe), 242 },
> @@ -144,7 +142,6 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = {
>      { SCMP_SYS(newfstatat), 241 },
>      { SCMP_SYS(shutdown), 241 },
>      { SCMP_SYS(getsockopt), 241 },
> -    { SCMP_SYS(semctl), 241 },

ACK.

>      { SCMP_SYS(semop), 241 },
>      { SCMP_SYS(semtimedop), 241 },
>      { SCMP_SYS(epoll_ctl_old), 241 },
> @@ -180,7 +177,6 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = {
>      { SCMP_SYS(fstatat64), 241 },
>      { SCMP_SYS(lstat64), 241 },
>      { SCMP_SYS(sendfile64), 241 },
> -    { SCMP_SYS(ugetrlimit), 241 },

Xen uses getrlimit, not sure what this one is.  Perhaps glibc's wrapper
calls it?

>      { SCMP_SYS(alarm), 241 },
>      { SCMP_SYS(rt_sigsuspend), 241 },
>      { SCMP_SYS(rt_sigqueueinfo), 241 },
> @@ -192,12 +188,10 @@ static const struct QemuSeccompSyscall seccomp_whitelist[] = {
>      { SCMP_SYS(lchown), 241 },
>      { SCMP_SYS(fchownat), 241 },
>      { SCMP_SYS(fstatfs), 241 },
> -    { SCMP_SYS(sendfile), 241 },

Should probably remove sendfile64 too?

>      { SCMP_SYS(getitimer), 241 },
>      { SCMP_SYS(syncfs), 241 },
>      { SCMP_SYS(fsync), 241 },
>      { SCMP_SYS(fchdir), 241 },
> -    { SCMP_SYS(flock), 241 },

ACK.

Paolo

>      { SCMP_SYS(msync), 241 },
>      { SCMP_SYS(sched_setparam), 241 },
>      { SCMP_SYS(sched_setscheduler), 241 },
>