-use std::convert::TryFrom;
use std::env;
use std::ffi::{OsStr, OsString};
use std::io::ErrorKind;
+use std::mem;
+use rustc_const_eval::interpret::Pointer;
use rustc_data_structures::fx::FxHashMap;
-use rustc_mir::interpret::Pointer;
-use rustc_target::abi::{LayoutOf, Size};
+use rustc_middle::ty::layout::LayoutOf;
+use rustc_target::abi::Size;
+use crate::helpers::target_os_is_unix;
use crate::*;
/// Check whether an operation that writes to a target buffer was successful.
impl<'tcx> EnvVars<'tcx> {
pub(crate) fn init<'mir>(
ecx: &mut InterpCx<'mir, 'tcx, Evaluator<'mir, 'tcx>>,
- mut excluded_env_vars: Vec<String>,
+ config: &MiriConfig,
) -> InterpResult<'tcx> {
- let target_os = ecx.tcx.sess.target.os.as_str();
- if target_os == "windows" {
- // Temporary hack: Exclude `TERM` var to avoid terminfo trying to open the termcap file.
- // Can be removed once https://github.com/rust-lang/miri/issues/1013 is resolved.
- excluded_env_vars.push("TERM".to_owned());
- }
-
- if ecx.machine.communicate() {
- for (name, value) in env::vars() {
- if !excluded_env_vars.contains(&name) {
+ let target_os = ecx.tcx.sess.target.os.as_ref();
+ // HACK: Exclude `TERM` var to avoid terminfo trying to open the termcap file.
+ // This is (a) very slow and (b) does not work on Windows.
+ let mut excluded_env_vars = config.excluded_env_vars.clone();
+ excluded_env_vars.push("TERM".to_owned());
+
+ // Skip the loop entirely if we don't want to forward anything.
+ if ecx.machine.communicate() || !config.forwarded_env_vars.is_empty() {
+ for (name, value) in env::vars_os() {
+ let forward = match ecx.machine.communicate() {
+ true => !excluded_env_vars.iter().any(|v| **v == name),
+ false => config.forwarded_env_vars.iter().any(|v| **v == name),
+ };
+ if forward {
let var_ptr = match target_os {
- "linux" | "macos" =>
+ target if target_os_is_unix(target) =>
alloc_env_var_as_c_str(name.as_ref(), value.as_ref(), ecx)?,
"windows" => alloc_env_var_as_wide_str(name.as_ref(), value.as_ref(), ecx)?,
unsupported =>
unsupported
),
};
- ecx.machine.env_vars.map.insert(OsString::from(name), var_ptr);
+ ecx.machine.env_vars.map.insert(name, var_ptr);
}
}
}
ecx: &mut InterpCx<'mir, 'tcx, Evaluator<'mir, 'tcx>>,
) -> InterpResult<'tcx> {
// Deallocate individual env vars.
- for (_name, ptr) in ecx.machine.env_vars.map.drain() {
- ecx.memory.deallocate(ptr, None, MiriMemoryKind::Env.into())?;
+ let env_vars = mem::take(&mut ecx.machine.env_vars.map);
+ for (_name, ptr) in env_vars {
+ ecx.deallocate_ptr(ptr, None, MiriMemoryKind::Runtime.into())?;
}
// Deallocate environ var list.
let environ = ecx.machine.env_vars.environ.unwrap();
let old_vars_ptr = ecx.read_pointer(&environ.into())?;
- ecx.memory.deallocate(old_vars_ptr, None, MiriMemoryKind::Env.into())?;
+ ecx.deallocate_ptr(old_vars_ptr, None, MiriMemoryKind::Runtime.into())?;
Ok(())
}
}
let mut name_osstring = name.to_os_string();
name_osstring.push("=");
name_osstring.push(value);
- ecx.alloc_os_str_as_c_str(name_osstring.as_os_str(), MiriMemoryKind::Env.into())
+ ecx.alloc_os_str_as_c_str(name_osstring.as_os_str(), MiriMemoryKind::Runtime.into())
}
fn alloc_env_var_as_wide_str<'mir, 'tcx>(
let mut name_osstring = name.to_os_string();
name_osstring.push("=");
name_osstring.push(value);
- ecx.alloc_os_str_as_wide_str(name_osstring.as_os_str(), MiriMemoryKind::Env.into())
+ ecx.alloc_os_str_as_wide_str(name_osstring.as_os_str(), MiriMemoryKind::Runtime.into())
}
impl<'mir, 'tcx: 'mir> EvalContextExt<'mir, 'tcx> for crate::MiriEvalContext<'mir, 'tcx> {}
pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx> {
fn getenv(&mut self, name_op: &OpTy<'tcx, Tag>) -> InterpResult<'tcx, Pointer<Option<Tag>>> {
let this = self.eval_context_mut();
- let target_os = &this.tcx.sess.target.os;
- assert!(
- target_os == "linux" || target_os == "macos",
- "`getenv` is only available for the UNIX target family"
- );
+ this.assert_target_os_is_unix("getenv");
let name_ptr = this.read_pointer(name_op)?;
let name = this.read_os_str_from_c_str(name_ptr)?;
}
// Allocate environment block & Store environment variables to environment block.
// Final null terminator(block terminator) is added by `alloc_os_str_to_wide_str`.
- let envblock_ptr = this.alloc_os_str_as_wide_str(&env_vars, MiriMemoryKind::Env.into())?;
+ let envblock_ptr =
+ this.alloc_os_str_as_wide_str(&env_vars, MiriMemoryKind::Runtime.into())?;
// If the function succeeds, the return value is a pointer to the environment block of the current process.
Ok(envblock_ptr)
}
this.assert_target_os("windows", "FreeEnvironmentStringsW");
let env_block_ptr = this.read_pointer(env_block_op)?;
- let result = this.memory.deallocate(env_block_ptr, None, MiriMemoryKind::Env.into());
+ let result = this.deallocate_ptr(env_block_ptr, None, MiriMemoryKind::Runtime.into());
// If the function succeeds, the return value is nonzero.
Ok(result.is_ok() as i32)
}
name_op: &OpTy<'tcx, Tag>,
value_op: &OpTy<'tcx, Tag>,
) -> InterpResult<'tcx, i32> {
- let mut this = self.eval_context_mut();
- let target_os = &this.tcx.sess.target.os;
- assert!(
- target_os == "linux" || target_os == "macos",
- "`setenv` is only available for the UNIX target family"
- );
+ let this = self.eval_context_mut();
+ this.assert_target_os_is_unix("setenv");
let name_ptr = this.read_pointer(name_op)?;
let value_ptr = this.read_pointer(value_op)?;
}
}
if let Some((name, value)) = new {
- let var_ptr = alloc_env_var_as_c_str(&name, &value, &mut this)?;
+ let var_ptr = alloc_env_var_as_c_str(&name, &value, this)?;
if let Some(var) = this.machine.env_vars.map.insert(name, var_ptr) {
- this.memory.deallocate(var, None, MiriMemoryKind::Env.into())?;
+ this.deallocate_ptr(var, None, MiriMemoryKind::Runtime.into())?;
}
this.update_environ()?;
Ok(0) // return zero on success
name_op: &OpTy<'tcx, Tag>, // LPCWSTR
value_op: &OpTy<'tcx, Tag>, // LPCWSTR
) -> InterpResult<'tcx, i32> {
- let mut this = self.eval_context_mut();
+ let this = self.eval_context_mut();
this.assert_target_os("windows", "SetEnvironmentVariableW");
let name_ptr = this.read_pointer(name_op)?;
} else if this.ptr_is_null(value_ptr)? {
// Delete environment variable `{name}`
if let Some(var) = this.machine.env_vars.map.remove(&name) {
- this.memory.deallocate(var, None, MiriMemoryKind::Env.into())?;
+ this.deallocate_ptr(var, None, MiriMemoryKind::Runtime.into())?;
this.update_environ()?;
}
Ok(1) // return non-zero on success
} else {
let value = this.read_os_str_from_wide_str(value_ptr)?;
- let var_ptr = alloc_env_var_as_wide_str(&name, &value, &mut this)?;
+ let var_ptr = alloc_env_var_as_wide_str(&name, &value, this)?;
if let Some(var) = this.machine.env_vars.map.insert(name, var_ptr) {
- this.memory.deallocate(var, None, MiriMemoryKind::Env.into())?;
+ this.deallocate_ptr(var, None, MiriMemoryKind::Runtime.into())?;
}
this.update_environ()?;
Ok(1) // return non-zero on success
fn unsetenv(&mut self, name_op: &OpTy<'tcx, Tag>) -> InterpResult<'tcx, i32> {
let this = self.eval_context_mut();
- let target_os = &this.tcx.sess.target.os;
- assert!(
- target_os == "linux" || target_os == "macos",
- "`unsetenv` is only available for the UNIX target family"
- );
+ this.assert_target_os_is_unix("unsetenv");
let name_ptr = this.read_pointer(name_op)?;
let mut success = None;
}
if let Some(old) = success {
if let Some(var) = old {
- this.memory.deallocate(var, None, MiriMemoryKind::Env.into())?;
+ this.deallocate_ptr(var, None, MiriMemoryKind::Runtime.into())?;
}
this.update_environ()?;
Ok(0)
size_op: &OpTy<'tcx, Tag>,
) -> InterpResult<'tcx, Pointer<Option<Tag>>> {
let this = self.eval_context_mut();
- let target_os = &this.tcx.sess.target.os;
- assert!(
- target_os == "linux" || target_os == "macos",
- "`getcwd` is only available for the UNIX target family"
- );
+ this.assert_target_os_is_unix("getcwd");
- let buf = this.read_pointer(&buf_op)?;
- let size = this.read_scalar(&size_op)?.to_machine_usize(&*this.tcx)?;
+ let buf = this.read_pointer(buf_op)?;
+ let size = this.read_scalar(size_op)?.to_machine_usize(&*this.tcx)?;
if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op {
- this.reject_in_isolation("getcwd", reject_with)?;
+ this.reject_in_isolation("`getcwd`", reject_with)?;
this.set_last_error_from_io_error(ErrorKind::PermissionDenied)?;
return Ok(Pointer::null());
}
let buf = this.read_pointer(buf_op)?;
if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op {
- this.reject_in_isolation("GetCurrentDirectoryW", reject_with)?;
+ this.reject_in_isolation("`GetCurrentDirectoryW`", reject_with)?;
this.set_last_error_from_io_error(ErrorKind::PermissionDenied)?;
return Ok(0);
}
fn chdir(&mut self, path_op: &OpTy<'tcx, Tag>) -> InterpResult<'tcx, i32> {
let this = self.eval_context_mut();
- let target_os = &this.tcx.sess.target.os;
- assert!(
- target_os == "linux" || target_os == "macos",
- "`getcwd` is only available for the UNIX target family"
- );
+ this.assert_target_os_is_unix("chdir");
let path = this.read_path_from_c_str(this.read_pointer(path_op)?)?;
if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op {
- this.reject_in_isolation("chdir", reject_with)?;
+ this.reject_in_isolation("`chdir`", reject_with)?;
this.set_last_error_from_io_error(ErrorKind::PermissionDenied)?;
return Ok(-1);
let path = this.read_path_from_wide_str(this.read_pointer(path_op)?)?;
if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op {
- this.reject_in_isolation("SetCurrentDirectoryW", reject_with)?;
+ this.reject_in_isolation("`SetCurrentDirectoryW`", reject_with)?;
this.set_last_error_from_io_error(ErrorKind::PermissionDenied)?;
return Ok(0);
// Deallocate the old environ list, if any.
if let Some(environ) = this.machine.env_vars.environ {
let old_vars_ptr = this.read_pointer(&environ.into())?;
- this.memory.deallocate(old_vars_ptr, None, MiriMemoryKind::Env.into())?;
+ this.deallocate_ptr(old_vars_ptr, None, MiriMemoryKind::Runtime.into())?;
} else {
// No `environ` allocated yet, let's do that.
// This is memory backing an extern static, hence `ExternStatic`, not `Env`.
- let layout = this.machine.layouts.usize;
+ let layout = this.machine.layouts.mut_raw_ptr;
let place = this.allocate(layout, MiriMemoryKind::ExternStatic.into())?;
this.machine.env_vars.environ = Some(place);
}
vars.push(Pointer::null());
// Make an array with all these pointers inside Miri.
let tcx = this.tcx;
- let vars_layout =
- this.layout_of(tcx.mk_array(tcx.types.usize, u64::try_from(vars.len()).unwrap()))?;
- let vars_place = this.allocate(vars_layout, MiriMemoryKind::Env.into())?;
+ let vars_layout = this.layout_of(
+ tcx.mk_array(this.machine.layouts.mut_raw_ptr.ty, u64::try_from(vars.len()).unwrap()),
+ )?;
+ let vars_place = this.allocate(vars_layout, MiriMemoryKind::Runtime.into())?;
for (idx, var) in vars.into_iter().enumerate() {
let place = this.mplace_field(&vars_place, idx)?;
this.write_pointer(var, &place.into())?;
Ok(())
}
+
+ fn getpid(&mut self) -> InterpResult<'tcx, i32> {
+ let this = self.eval_context_mut();
+ this.assert_target_os_is_unix("getpid");
+
+ this.check_no_isolation("`getpid`")?;
+
+ // The reason we need to do this wacky of a conversion is because
+ // `libc::getpid` returns an i32, however, `std::process::id()` return an u32.
+ // So we un-do the conversion that stdlib does and turn it back into an i32.
+
+ Ok(std::process::id() as i32)
+ }
+
+ #[allow(non_snake_case)]
+ fn GetCurrentProcessId(&mut self) -> InterpResult<'tcx, u32> {
+ let this = self.eval_context_mut();
+ this.assert_target_os("windows", "GetCurrentProcessId");
+
+ this.check_no_isolation("`GetCurrentProcessId`")?;
+
+ Ok(std::process::id())
+ }
}
projects / rust.git / blobdiff