diff options
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 78 |
1 files changed, 71 insertions, 7 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 5a6d3821f5..e51f513532 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -547,7 +547,21 @@ static long do_setsockopt(int sockfd, int level, int optname, break; case SOL_IP: switch(optname) { + case IP_TOS: + case IP_TTL: case IP_HDRINCL: + case IP_ROUTER_ALERT: + case IP_RECVOPTS: + case IP_RETOPTS: + case IP_PKTINFO: + case IP_MTU_DISCOVER: + case IP_RECVERR: + case IP_RECVTOS: +#ifdef IP_FREEBIND + case IP_FREEBIND: +#endif + case IP_MULTICAST_TTL: + case IP_MULTICAST_LOOP: val = 0; if (optlen >= sizeof(uint32_t)) { if (get_user(val, (uint32_t *)optval)) @@ -619,6 +633,45 @@ static long do_getsockopt(int sockfd, int level, int optname, /* These don't just return a single integer */ goto unimplemented; default: + goto int_case; + } + break; + case SOL_TCP: + /* TCP options all take an 'int' value. */ + int_case: + if (get_user(len, optlen)) + return -EFAULT; + if (len < 0) + return -EINVAL; + lv = sizeof(int); + ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); + if (ret < 0) + return ret; + val = tswap32(val); + if (len > lv) + len = lv; + if (copy_to_user(optval, &val, len)) + return -EFAULT; + if (put_user(len, optlen)) + return -EFAULT; + break; + case SOL_IP: + switch(optname) { + case IP_TOS: + case IP_TTL: + case IP_HDRINCL: + case IP_ROUTER_ALERT: + case IP_RECVOPTS: + case IP_RETOPTS: + case IP_PKTINFO: + case IP_MTU_DISCOVER: + case IP_RECVERR: + case IP_RECVTOS: +#ifdef IP_FREEBIND + case IP_FREEBIND: +#endif + case IP_MULTICAST_TTL: + case IP_MULTICAST_LOOP: if (get_user(len, optlen)) return -EFAULT; if (len < 0) @@ -627,14 +680,25 @@ static long do_getsockopt(int sockfd, int level, int optname, ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); if (ret < 0) return ret; - val = tswap32(val); - if (len > lv) - len = lv; - if (copy_to_user(optval, &val, len)) - return -EFAULT; - if (put_user(len, optlen)) - return -EFAULT; + if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { + unsigned char ucval = val; + len = 1; + if (put_user(len, optlen)) + return -EFAULT; + if (copy_to_user(optval,&ucval,1)) + return -EFAULT; + } else { + val = tswap32(val); + if (len > sizeof(int)) + len = sizeof(int); + if (put_user(len, optlen)) + return -EFAULT; + if (copy_to_user(optval, &val, len)) + return -EFAULT; + } break; + default: + goto unimplemented; } break; default: |