| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License.. |
| |
| use libc::{self, c_int, c_void, off_t, size_t}; |
| use std::io::Error; |
| |
| #[no_mangle] |
| pub extern "C" fn u_malloc_ocall(error: *mut c_int, size: size_t) -> *mut c_void { |
| let mut errno = 0; |
| let ret = unsafe { libc::malloc(size) }; |
| if ret.is_null() { |
| errno = Error::last_os_error().raw_os_error().unwrap_or(0); |
| } |
| if !error.is_null() { |
| unsafe { |
| *error = errno; |
| } |
| } |
| ret |
| } |
| |
| #[no_mangle] |
| pub extern "C" fn u_free_ocall(p: *mut c_void) { |
| unsafe { libc::free(p) } |
| } |
| |
| #[no_mangle] |
| pub extern "C" fn u_mmap_ocall( |
| error: *mut c_int, |
| start: *mut c_void, |
| length: size_t, |
| prot: c_int, |
| flags: c_int, |
| fd: c_int, |
| offset: off_t, |
| ) -> *mut c_void { |
| let mut errno = 0; |
| let ret = unsafe { libc::mmap(start, length, prot, flags, fd, offset) }; |
| if ret as isize == -1 { |
| errno = Error::last_os_error().raw_os_error().unwrap_or(0); |
| } |
| if !error.is_null() { |
| unsafe { |
| *error = errno; |
| } |
| } |
| ret |
| } |
| |
| #[no_mangle] |
| pub extern "C" fn u_munmap_ocall(error: *mut c_int, start: *mut c_void, length: size_t) -> c_int { |
| let mut errno = 0; |
| let ret = unsafe { libc::munmap(start, length) }; |
| if ret < 0 { |
| errno = Error::last_os_error().raw_os_error().unwrap_or(0); |
| } |
| if !error.is_null() { |
| unsafe { |
| *error = errno; |
| } |
| } |
| ret |
| } |
| |
| #[no_mangle] |
| pub extern "C" fn u_msync_ocall( |
| error: *mut c_int, |
| addr: *mut c_void, |
| length: size_t, |
| flags: c_int, |
| ) -> c_int { |
| let mut errno = 0; |
| let ret = unsafe { libc::msync(addr, length, flags) }; |
| if ret < 0 { |
| errno = Error::last_os_error().raw_os_error().unwrap_or(0); |
| } |
| if !error.is_null() { |
| unsafe { |
| *error = errno; |
| } |
| } |
| ret |
| } |
| |
| #[no_mangle] |
| pub extern "C" fn u_mprotect_ocall( |
| error: *mut c_int, |
| addr: *mut c_void, |
| length: size_t, |
| prot: c_int, |
| ) -> c_int { |
| let mut errno = 0; |
| let ret = unsafe { libc::mprotect(addr, length, prot) }; |
| if ret < 0 { |
| errno = Error::last_os_error().raw_os_error().unwrap_or(0); |
| } |
| if !error.is_null() { |
| unsafe { |
| *error = errno; |
| } |
| } |
| ret |
| } |