diff options
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 6efeeff2bf..c134c32d6f 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -1856,7 +1856,7 @@ static abi_long do_socket(int domain, int type, int protocol) } if (domain == PF_NETLINK) - return -EAFNOSUPPORT; /* do not NETLINK socket connections possible */ + return -TARGET_EAFNOSUPPORT; ret = get_errno(socket(domain, type, protocol)); if (ret >= 0) { ret = sock_flags_fixup(ret, target_type); @@ -7438,6 +7438,22 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); if (!is_error(ret)) { + if (ret > arg2) { + /* More data returned than the caller's buffer will fit. + * This only happens if sizeof(abi_long) < sizeof(long) + * and the caller passed us a buffer holding an odd number + * of abi_longs. If the host kernel is actually using the + * extra 4 bytes then fail EINVAL; otherwise we can just + * ignore them and only copy the interesting part. + */ + int numcpus = sysconf(_SC_NPROCESSORS_CONF); + if (numcpus > arg2 * 8) { + ret = -TARGET_EINVAL; + break; + } + ret = arg2; + } + if (copy_to_user(arg3, mask, ret)) { goto efault; } |