| // 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 std::io::Error; |
| use libc::{self, c_char, c_int, uid_t, size_t, passwd}; |
| |
| #[no_mangle] |
| pub extern "C" fn u_getuid_ocall() -> uid_t { |
| unsafe { libc::getuid()} |
| } |
| |
| #[no_mangle] |
| pub extern "C" fn u_environ_ocall() -> *const *const c_char { |
| extern { static environ: *const *const c_char; } |
| unsafe { environ } |
| } |
| |
| #[no_mangle] |
| pub extern "C" fn u_getenv_ocall(name: *const c_char) -> *const c_char { |
| unsafe { libc::getenv(name) } |
| } |
| |
| #[no_mangle] |
| pub extern "C" fn u_setenv_ocall( |
| error: *mut c_int, |
| name: *const c_char, |
| value: *const c_char, |
| overwrite: c_int, |
| ) -> c_int { |
| let mut errno = 0; |
| let ret = unsafe { libc::setenv(name, value, overwrite) }; |
| 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_unsetenv_ocall(error: *mut c_int, name: *const c_char) -> c_int { |
| let mut errno = 0; |
| let ret = unsafe { libc::unsetenv(name) }; |
| 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_getcwd_ocall(error: *mut c_int, buf: *mut c_char, size: size_t) -> *mut c_char { |
| let mut errno = 0; |
| let ret = unsafe { libc::getcwd(buf, 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_chdir_ocall(error: *mut c_int, dir: *const c_char) -> c_int { |
| let mut errno = 0; |
| let ret = unsafe { libc::chdir(dir) }; |
| 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_getpwuid_r_ocall( |
| uid: uid_t, |
| pwd: *mut passwd, |
| buf: *mut c_char, |
| buflen: size_t, |
| passwd_result: *mut *mut passwd, |
| ) -> c_int { |
| let ret = unsafe { libc::getpwuid_r(uid, pwd, buf, buflen, passwd_result) }; |
| if ret == 0 { |
| let pwd_ret = unsafe { *passwd_result }; |
| if !pwd_ret.is_null() { |
| unsafe { |
| let mut temp_pwd = &mut *pwd; |
| let p = -1_isize as usize; |
| if !temp_pwd.pw_name.is_null() { |
| temp_pwd.pw_name = usize::checked_sub(temp_pwd.pw_name as _, buf as _).unwrap_or(p) as *mut c_char; |
| } else { |
| temp_pwd.pw_name = p as *mut c_char; |
| } |
| if !temp_pwd.pw_passwd.is_null() { |
| temp_pwd.pw_passwd = usize::checked_sub(temp_pwd.pw_passwd as _, buf as _).unwrap_or(p) as *mut c_char; |
| } else { |
| temp_pwd.pw_passwd = p as *mut c_char; |
| } |
| if !temp_pwd.pw_gecos.is_null() { |
| temp_pwd.pw_gecos = usize::checked_sub(temp_pwd.pw_gecos as _, buf as _).unwrap_or(p) as *mut c_char; |
| } else { |
| temp_pwd.pw_gecos = p as *mut c_char; |
| } |
| if !temp_pwd.pw_dir.is_null() { |
| temp_pwd.pw_dir = usize::checked_sub(temp_pwd.pw_dir as _, buf as _).unwrap_or(p) as *mut c_char; |
| } else { |
| temp_pwd.pw_dir = p as *mut c_char; |
| } |
| if !temp_pwd.pw_shell.is_null() { |
| temp_pwd.pw_shell = usize::checked_sub(temp_pwd.pw_shell as _, buf as _).unwrap_or(p) as *mut c_char; |
| } else { |
| temp_pwd.pw_shell = p as *mut c_char; |
| } |
| } |
| } |
| } |
| ret |
| } |