diff options
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 39 |
1 files changed, 31 insertions, 8 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 77281f1..6182a27 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -2004,16 +2004,30 @@ out2: return ret; } -/* do_accept() Must return target values and target errnos. */ -static abi_long do_accept(int fd, abi_ulong target_addr, - abi_ulong target_addrlen_addr) +/* If we don't have a system accept4() then just call accept. + * The callsites to do_accept4() will ensure that they don't + * pass a non-zero flags argument in this config. + */ +#ifndef CONFIG_ACCEPT4 +static inline int accept4(int sockfd, struct sockaddr *addr, + socklen_t *addrlen, int flags) +{ + assert(flags == 0); + return accept(sockfd, addr, addrlen); +} +#endif + +/* do_accept4() Must return target values and target errnos. */ +static abi_long do_accept4(int fd, abi_ulong target_addr, + abi_ulong target_addrlen_addr, int flags) { socklen_t addrlen; void *addr; abi_long ret; - if (target_addr == 0) - return get_errno(accept(fd, NULL, NULL)); + if (target_addr == 0) { + return get_errno(accept4(fd, NULL, NULL, flags)); + } /* linux returns EINVAL if addrlen pointer is invalid */ if (get_user_u32(addrlen, target_addrlen_addr)) @@ -2028,7 +2042,7 @@ static abi_long do_accept(int fd, abi_ulong target_addr, addr = alloca(addrlen); - ret = get_errno(accept(fd, addr, &addrlen)); + ret = get_errno(accept4(fd, addr, &addrlen, flags)); if (!is_error(ret)) { host_to_target_sockaddr(target_addr, addr, addrlen); if (put_user_u32(addrlen, target_addrlen_addr)) @@ -2254,7 +2268,7 @@ static abi_long do_socketcall(int num, abi_ulong vptr) || get_user_ual(target_addrlen, vptr + 2 * n)) return -TARGET_EFAULT; - ret = do_accept(sockfd, target_addr, target_addrlen); + ret = do_accept4(sockfd, target_addr, target_addrlen, 0); } break; case SOCKOP_getsockname: @@ -6677,7 +6691,16 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_accept case TARGET_NR_accept: - ret = do_accept(arg1, arg2, arg3); + ret = do_accept4(arg1, arg2, arg3, 0); + break; +#endif +#ifdef TARGET_NR_accept4 + case TARGET_NR_accept4: +#ifdef CONFIG_ACCEPT4 + ret = do_accept4(arg1, arg2, arg3, arg4); +#else + goto unimplemented; +#endif break; #endif #ifdef TARGET_NR_bind |