| Message ID | AANLkTinTkDDYx9am0VtB40BXCLvM-RsLqUTQJOSG2Xk1@mail.gmail.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 0ebe7e1..d44f512 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -1551,8 +1551,9 @@ static abi_long do_bind(int sockfd, abi_ulong target_addr, void *addr; abi_long ret; - if (addrlen < 0) + if ((int)addrlen < 0) { return -TARGET_EINVAL; + } addr = alloca(addrlen+1); @@ -1570,8 +1571,9 @@ static abi_long do_connect(int sockfd, abi_ulong target_addr, void *addr; abi_long ret; - if (addrlen < 0) + if ((int)addrlen < 0) { return -TARGET_EINVAL; + } addr = alloca(addrlen);
On many systems, socklen_t is defined as unsigned. This means that checks for negative values are not meaningful. Fix by explicitly casting to a signed integer. This also fixes some warnings with GCC flag -Wtype-limits. Signed-off-by: Blue Swirl <blauwirbel@gmail.com> --- linux-user/syscall.c | 20 +++++++++++++------- 1 files changed, 13 insertions(+), 7 deletions(-) @@ -1656,8 +1658,9 @@ static abi_long do_accept(int fd, abi_ulong target_addr, if (get_user_u32(addrlen, target_addrlen_addr)) return -TARGET_EINVAL; - if (addrlen < 0) + if ((int)addrlen < 0) { return -TARGET_EINVAL; + } if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) return -TARGET_EINVAL; @@ -1684,8 +1687,9 @@ static abi_long do_getpeername(int fd, abi_ulong target_addr, if (get_user_u32(addrlen, target_addrlen_addr)) return -TARGET_EFAULT; - if (addrlen < 0) + if ((int)addrlen < 0) { return -TARGET_EINVAL; + } if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) return -TARGET_EFAULT; @@ -1712,8 +1716,9 @@ static abi_long do_getsockname(int fd, abi_ulong target_addr, if (get_user_u32(addrlen, target_addrlen_addr)) return -TARGET_EFAULT; - if (addrlen < 0) + if ((int)addrlen < 0) { return -TARGET_EINVAL; + } if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) return -TARGET_EFAULT; @@ -1753,8 +1758,9 @@ static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, void *host_msg; abi_long ret; - if (addrlen < 0) + if ((int)addrlen < 0) { return -TARGET_EINVAL; + } host_msg = lock_user(VERIFY_READ, msg, len, 1); if (!host_msg) @@ -1792,7 +1798,7 @@ static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, ret = -TARGET_EFAULT; goto fail; } - if (addrlen < 0) { + if ((int)addrlen < 0) { ret = -TARGET_EINVAL; goto fail; }