2019-09-24 17:28:00 -05:00
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use std::collections::HashMap;
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2019-12-23 05:56:23 -06:00
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use std::convert::{TryFrom, TryInto};
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2020-01-26 16:45:05 -06:00
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use std::fs::{remove_file, rename, File, OpenOptions};
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2020-01-26 12:36:36 -06:00
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use std::io::{Read, Seek, SeekFrom, Write};
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2019-11-30 14:09:52 -06:00
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use std::path::PathBuf;
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use std::time::SystemTime;
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2019-09-24 17:28:00 -05:00
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2019-12-23 05:56:23 -06:00
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use rustc::ty::layout::{Align, LayoutOf, Size};
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2019-09-30 14:21:45 -05:00
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2019-09-24 17:28:00 -05:00
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use crate::stacked_borrows::Tag;
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use crate::*;
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2019-11-30 14:09:52 -06:00
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use helpers::immty_from_uint_checked;
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use shims::time::system_time_to_duration;
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2019-09-24 17:28:00 -05:00
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2019-10-20 05:20:48 -05:00
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#[derive(Debug)]
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2019-09-30 15:18:23 -05:00
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pub struct FileHandle {
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2019-09-30 11:51:09 -05:00
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file: File,
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2019-12-30 16:26:17 -06:00
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writable: bool,
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2019-09-30 11:51:09 -05:00
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}
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2019-09-24 17:28:00 -05:00
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pub struct FileHandler {
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2019-09-30 11:51:09 -05:00
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handles: HashMap<i32, FileHandle>,
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2019-09-24 17:28:00 -05:00
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low: i32,
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}
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2020-01-30 18:38:30 -06:00
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impl FileHandler {
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fn next_fd(&self) -> i32 {
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self.low + 1
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}
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fn register_fd(&mut self, fd: i32, handle: FileHandle) {
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self.low = fd;
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self.handles.insert(fd, handle).unwrap_none();
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}
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}
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2019-09-28 14:22:57 -05:00
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impl Default for FileHandler {
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fn default() -> Self {
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FileHandler {
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2019-09-30 11:51:09 -05:00
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handles: Default::default(),
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2019-10-21 06:24:56 -05:00
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// 0, 1 and 2 are reserved for stdin, stdout and stderr.
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2020-01-26 11:19:06 -06:00
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low: 2,
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2019-09-28 14:22:57 -05:00
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}
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}
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}
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2019-09-24 17:28:00 -05:00
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impl<'mir, 'tcx> EvalContextExt<'mir, 'tcx> for crate::MiriEvalContext<'mir, 'tcx> {}
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pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx> {
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fn open(
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&mut self,
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path_op: OpTy<'tcx, Tag>,
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flag_op: OpTy<'tcx, Tag>,
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) -> InterpResult<'tcx, i32> {
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let this = self.eval_context_mut();
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2019-10-14 15:36:15 -05:00
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this.check_no_isolation("open")?;
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2019-09-24 17:28:00 -05:00
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let flag = this.read_scalar(flag_op)?.to_i32()?;
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2019-09-30 11:46:07 -05:00
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let mut options = OpenOptions::new();
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2019-10-14 16:42:29 -05:00
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let o_rdonly = this.eval_libc_i32("O_RDONLY")?;
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let o_wronly = this.eval_libc_i32("O_WRONLY")?;
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let o_rdwr = this.eval_libc_i32("O_RDWR")?;
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// The first two bits of the flag correspond to the access mode in linux, macOS and
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// windows. We need to check that in fact the access mode flags for the current platform
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// only use these two bits, otherwise we are in an unsupported platform and should error.
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if (o_rdonly | o_wronly | o_rdwr) & !0b11 != 0 {
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throw_unsup_format!("Access mode flags on this platform are unsupported");
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}
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2019-12-30 16:26:17 -06:00
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let mut writable = true;
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2019-12-27 07:34:35 -06:00
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2019-10-14 16:42:29 -05:00
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// Now we check the access mode
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2019-09-30 11:46:07 -05:00
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let access_mode = flag & 0b11;
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2019-10-14 16:42:29 -05:00
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if access_mode == o_rdonly {
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2019-12-30 16:26:17 -06:00
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writable = false;
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2019-09-30 11:46:07 -05:00
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options.read(true);
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2019-10-14 16:42:29 -05:00
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} else if access_mode == o_wronly {
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2019-09-30 11:46:07 -05:00
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options.write(true);
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2019-10-14 16:42:29 -05:00
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} else if access_mode == o_rdwr {
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2019-09-30 11:46:07 -05:00
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options.read(true).write(true);
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} else {
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throw_unsup_format!("Unsupported access mode {:#x}", access_mode);
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}
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2019-10-11 05:30:50 -05:00
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// We need to check that there aren't unsupported options in `flag`. For this we try to
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// reproduce the content of `flag` in the `mirror` variable using only the supported
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// options.
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let mut mirror = access_mode;
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2019-09-30 11:46:07 -05:00
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2019-10-11 05:30:50 -05:00
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let o_append = this.eval_libc_i32("O_APPEND")?;
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if flag & o_append != 0 {
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2019-09-30 11:46:07 -05:00
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options.append(true);
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2019-10-11 05:30:50 -05:00
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mirror |= o_append;
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2019-09-30 11:46:07 -05:00
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}
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2019-10-11 05:30:50 -05:00
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let o_trunc = this.eval_libc_i32("O_TRUNC")?;
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if flag & o_trunc != 0 {
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2019-09-30 11:46:07 -05:00
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options.truncate(true);
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2019-10-11 05:30:50 -05:00
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mirror |= o_trunc;
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2019-09-30 11:46:07 -05:00
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}
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2019-10-11 05:30:50 -05:00
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let o_creat = this.eval_libc_i32("O_CREAT")?;
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if flag & o_creat != 0 {
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2019-09-30 11:46:07 -05:00
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options.create(true);
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2019-10-11 05:30:50 -05:00
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mirror |= o_creat;
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}
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let o_cloexec = this.eval_libc_i32("O_CLOEXEC")?;
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if flag & o_cloexec != 0 {
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2019-10-12 20:12:26 -05:00
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// We do not need to do anything for this flag because `std` already sets it.
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// (Technically we do not support *not* setting this flag, but we ignore that.)
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2019-10-11 05:30:50 -05:00
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mirror |= o_cloexec;
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}
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// If `flag` is not equal to `mirror`, there is an unsupported option enabled in `flag`,
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// then we throw an error.
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if flag != mirror {
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2019-10-12 20:12:26 -05:00
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throw_unsup_format!("unsupported flags {:#x}", flag & !mirror);
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2019-09-24 17:28:00 -05:00
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}
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2019-12-04 03:43:36 -06:00
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let path = this.read_os_str_from_c_str(this.read_scalar(path_op)?.not_undef()?)?;
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2019-09-30 11:46:07 -05:00
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2019-11-30 14:09:52 -06:00
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let fd = options.open(&path).map(|file| {
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2020-01-30 18:38:30 -06:00
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let fh = &mut this.machine.file_handler;
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let fd = fh.next_fd();
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fh.register_fd(fd, FileHandle { file, writable });
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fd
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2019-09-30 14:07:08 -05:00
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});
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2019-10-18 14:33:25 -05:00
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this.try_unwrap_io_result(fd)
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2019-09-24 17:28:00 -05:00
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}
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fn fcntl(
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&mut self,
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fd_op: OpTy<'tcx, Tag>,
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cmd_op: OpTy<'tcx, Tag>,
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2020-01-26 11:19:06 -06:00
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arg_op: Option<OpTy<'tcx, Tag>>,
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2019-09-24 17:28:00 -05:00
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) -> InterpResult<'tcx, i32> {
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let this = self.eval_context_mut();
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2019-10-14 15:36:15 -05:00
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this.check_no_isolation("fcntl")?;
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2019-09-24 17:28:00 -05:00
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let fd = this.read_scalar(fd_op)?.to_i32()?;
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let cmd = this.read_scalar(cmd_op)?.to_i32()?;
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2019-10-21 06:24:56 -05:00
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// We only support getting the flags for a descriptor.
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2019-10-11 12:17:54 -05:00
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if cmd == this.eval_libc_i32("F_GETFD")? {
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2019-10-12 20:12:26 -05:00
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// Currently this is the only flag that `F_GETFD` returns. It is OK to just return the
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// `FD_CLOEXEC` value without checking if the flag is set for the file because `std`
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// always sets this flag when opening a file. However we still need to check that the
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// file itself is open.
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2019-10-24 08:44:13 -05:00
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if this.machine.file_handler.handles.contains_key(&fd) {
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Ok(this.eval_libc_i32("FD_CLOEXEC")?)
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} else {
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this.handle_not_found()
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}
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2020-01-26 11:19:06 -06:00
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} else if cmd == this.eval_libc_i32("F_DUPFD")? || cmd == this.eval_libc_i32("F_DUPFD_CLOEXEC")? {
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2020-01-28 23:18:09 -06:00
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// Note that we always assume the FD_CLOEXEC flag is set for every open file, in part
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// because exec() isn't supported. The F_DUPFD and F_DUPFD_CLOEXEC commands only
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2020-01-30 18:31:34 -06:00
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// differ in whether the FD_CLOEXEC flag is pre-set on the new file descriptor,
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2020-01-28 23:18:09 -06:00
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// thus they can share the same implementation here.
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2020-01-30 18:31:34 -06:00
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let arg_op = arg_op
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.ok_or_else(|| err_unsup_format!("fcntl with command F_DUPFD or F_DUPFD_CLOEXEC requires a third argument"))?;
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let arg = this.read_scalar(arg_op)?.to_i32()?;
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2020-01-26 11:19:06 -06:00
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let fh = &mut this.machine.file_handler;
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let (file_result, writable) = match fh.handles.get(&fd) {
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Some(original) => (original.file.try_clone(), original.writable),
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None => return this.handle_not_found(),
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};
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let fd_result = file_result.map(|duplicated| {
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2020-01-30 18:38:30 -06:00
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let new_fd = std::cmp::max(fh.next_fd(), arg);
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fh.register_fd(new_fd, FileHandle { file: duplicated, writable });
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2020-01-26 11:19:06 -06:00
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new_fd
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});
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this.try_unwrap_io_result(fd_result)
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2019-09-24 17:28:00 -05:00
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} else {
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2019-10-11 12:17:54 -05:00
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throw_unsup_format!("The {:#x} command is not supported for `fcntl`)", cmd);
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2019-09-24 17:28:00 -05:00
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}
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}
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fn close(&mut self, fd_op: OpTy<'tcx, Tag>) -> InterpResult<'tcx, i32> {
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let this = self.eval_context_mut();
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2019-10-14 15:36:15 -05:00
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this.check_no_isolation("close")?;
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2019-09-24 17:28:00 -05:00
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let fd = this.read_scalar(fd_op)?.to_i32()?;
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2019-10-24 08:44:13 -05:00
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if let Some(handle) = this.machine.file_handler.handles.remove(&fd) {
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2019-12-27 08:11:21 -06:00
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// We sync the file if it was opened in a mode different than read-only.
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2019-12-30 16:26:17 -06:00
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if handle.writable {
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2019-12-27 08:11:21 -06:00
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// `File::sync_all` does the checks that are done when closing a file. We do this to
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// to handle possible errors correctly.
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let result = this.try_unwrap_io_result(handle.file.sync_all().map(|_| 0i32));
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// Now we actually close the file.
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drop(handle);
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// And return the result.
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result
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} else {
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// We drop the file, this closes it but ignores any errors produced when closing
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// it. This is done because `File::sync_call` cannot be done over files like
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2019-12-30 16:26:17 -06:00
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// `/dev/urandom` which are read-only. Check
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2019-12-27 08:11:21 -06:00
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// https://github.com/rust-lang/miri/issues/999#issuecomment-568920439 for a deeper
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// discussion.
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drop(handle);
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Ok(0)
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2019-12-27 07:34:35 -06:00
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}
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2019-10-24 08:44:13 -05:00
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} else {
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this.handle_not_found()
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}
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2019-09-24 17:28:00 -05:00
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}
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fn read(
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&mut self,
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fd_op: OpTy<'tcx, Tag>,
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buf_op: OpTy<'tcx, Tag>,
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count_op: OpTy<'tcx, Tag>,
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) -> InterpResult<'tcx, i64> {
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let this = self.eval_context_mut();
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2019-10-14 15:36:15 -05:00
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this.check_no_isolation("read")?;
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2019-09-24 17:28:00 -05:00
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2019-11-17 02:30:32 -06:00
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let fd = this.read_scalar(fd_op)?.to_i32()?;
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let buf = this.read_scalar(buf_op)?.not_undef()?;
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2019-12-23 05:56:23 -06:00
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let count = this.read_scalar(count_op)?.to_machine_usize(&*this.tcx)?;
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2019-11-14 03:29:43 -06:00
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2019-11-17 02:30:32 -06:00
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// Check that the *entire* buffer is actually valid memory.
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2019-12-23 05:56:23 -06:00
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this.memory.check_ptr_access(
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buf,
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Size::from_bytes(count),
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Align::from_bytes(1).unwrap(),
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)?;
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2019-11-17 02:30:32 -06:00
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// We cap the number of read bytes to the largest value that we are able to fit in both the
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// host's and target's `isize`. This saves us from having to handle overflows later.
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2019-12-23 05:56:23 -06:00
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let count = count.min(this.isize_max() as u64).min(isize::max_value() as u64);
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2019-10-24 08:44:13 -05:00
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if let Some(handle) = this.machine.file_handler.handles.get_mut(&fd) {
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2019-11-13 10:57:20 -06:00
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// This can never fail because `count` was capped to be smaller than
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// `isize::max_value()`.
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2019-11-09 08:15:52 -06:00
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let count = isize::try_from(count).unwrap();
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2019-11-07 13:50:16 -06:00
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// We want to read at most `count` bytes. We are sure that `count` is not negative
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// because it was a target's `usize`. Also we are sure that its smaller than
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// `usize::max_value()` because it is a host's `isize`.
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let mut bytes = vec![0; count as usize];
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2019-11-09 08:15:52 -06:00
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let result = handle
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.file
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.read(&mut bytes)
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2019-11-13 13:45:00 -06:00
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// `File::read` never returns a value larger than `count`, so this cannot fail.
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2019-11-09 08:15:52 -06:00
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.map(|c| i64::try_from(c).unwrap());
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2019-10-28 16:44:18 -05:00
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2019-11-04 08:38:21 -06:00
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match result {
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2019-11-09 08:15:52 -06:00
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Ok(read_bytes) => {
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2019-11-05 15:47:24 -06:00
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// If reading to `bytes` did not fail, we write those bytes to the buffer.
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this.memory.write_bytes(buf, bytes)?;
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Ok(read_bytes)
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2019-11-09 08:15:52 -06:00
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}
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2019-11-04 08:38:21 -06:00
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Err(e) => {
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this.set_last_error_from_io_error(e)?;
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Ok(-1)
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2019-10-28 16:44:18 -05:00
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}
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2019-10-24 08:44:13 -05:00
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}
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} else {
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this.handle_not_found()
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}
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2019-09-30 15:18:23 -05:00
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}
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|
|
2019-09-30 11:46:07 -05:00
|
|
|
fn write(
|
|
|
|
&mut self,
|
|
|
|
fd_op: OpTy<'tcx, Tag>,
|
|
|
|
buf_op: OpTy<'tcx, Tag>,
|
|
|
|
count_op: OpTy<'tcx, Tag>,
|
|
|
|
) -> InterpResult<'tcx, i64> {
|
|
|
|
let this = self.eval_context_mut();
|
|
|
|
|
2019-10-14 15:36:15 -05:00
|
|
|
this.check_no_isolation("write")?;
|
2019-09-30 11:46:07 -05:00
|
|
|
|
2019-11-17 02:30:32 -06:00
|
|
|
let fd = this.read_scalar(fd_op)?.to_i32()?;
|
|
|
|
let buf = this.read_scalar(buf_op)?.not_undef()?;
|
2019-12-23 05:56:23 -06:00
|
|
|
let count = this.read_scalar(count_op)?.to_machine_usize(&*this.tcx)?;
|
2019-11-14 03:29:43 -06:00
|
|
|
|
2019-11-17 02:30:32 -06:00
|
|
|
// Check that the *entire* buffer is actually valid memory.
|
2019-12-23 05:56:23 -06:00
|
|
|
this.memory.check_ptr_access(
|
|
|
|
buf,
|
|
|
|
Size::from_bytes(count),
|
|
|
|
Align::from_bytes(1).unwrap(),
|
|
|
|
)?;
|
2019-11-17 02:30:32 -06:00
|
|
|
|
|
|
|
// We cap the number of written bytes to the largest value that we are able to fit in both the
|
|
|
|
// host's and target's `isize`. This saves us from having to handle overflows later.
|
2019-12-23 05:56:23 -06:00
|
|
|
let count = count.min(this.isize_max() as u64).min(isize::max_value() as u64);
|
2019-10-24 08:44:13 -05:00
|
|
|
|
|
|
|
if let Some(handle) = this.machine.file_handler.handles.get_mut(&fd) {
|
|
|
|
let bytes = this.memory.read_bytes(buf, Size::from_bytes(count))?;
|
2019-11-09 08:15:52 -06:00
|
|
|
let result = handle.file.write(&bytes).map(|c| i64::try_from(c).unwrap());
|
|
|
|
this.try_unwrap_io_result(result)
|
2019-10-24 08:44:13 -05:00
|
|
|
} else {
|
|
|
|
this.handle_not_found()
|
|
|
|
}
|
2019-09-30 11:46:07 -05:00
|
|
|
}
|
|
|
|
|
2020-01-26 12:36:36 -06:00
|
|
|
fn lseek64(
|
|
|
|
&mut self,
|
|
|
|
fd_op: OpTy<'tcx, Tag>,
|
|
|
|
offset_op: OpTy<'tcx, Tag>,
|
|
|
|
whence_op: OpTy<'tcx, Tag>,
|
|
|
|
) -> InterpResult<'tcx, i64> {
|
|
|
|
let this = self.eval_context_mut();
|
|
|
|
|
|
|
|
this.check_no_isolation("lseek64")?;
|
|
|
|
|
|
|
|
let fd = this.read_scalar(fd_op)?.to_i32()?;
|
|
|
|
let offset = this.read_scalar(offset_op)?.to_i64()?;
|
|
|
|
let whence = this.read_scalar(whence_op)?.to_i32()?;
|
|
|
|
|
|
|
|
let seek_from = if whence == this.eval_libc_i32("SEEK_SET")? {
|
|
|
|
SeekFrom::Start(offset as u64)
|
|
|
|
} else if whence == this.eval_libc_i32("SEEK_CUR")? {
|
|
|
|
SeekFrom::Current(offset)
|
|
|
|
} else if whence == this.eval_libc_i32("SEEK_END")? {
|
|
|
|
SeekFrom::End(offset)
|
|
|
|
} else {
|
2020-01-29 19:04:18 -06:00
|
|
|
let einval = this.eval_libc("EINVAL")?;
|
|
|
|
this.set_last_error(einval)?;
|
|
|
|
return Ok(-1);
|
2020-01-26 12:36:36 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
if let Some(handle) = this.machine.file_handler.handles.get_mut(&fd) {
|
|
|
|
let result = handle.file.seek(seek_from).map(|offset| offset as i64);
|
|
|
|
this.try_unwrap_io_result(result)
|
|
|
|
} else {
|
|
|
|
this.handle_not_found()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-10-24 08:44:13 -05:00
|
|
|
fn unlink(&mut self, path_op: OpTy<'tcx, Tag>) -> InterpResult<'tcx, i32> {
|
2019-10-03 09:33:36 -05:00
|
|
|
let this = self.eval_context_mut();
|
|
|
|
|
2019-10-14 15:36:15 -05:00
|
|
|
this.check_no_isolation("unlink")?;
|
2019-10-03 09:33:36 -05:00
|
|
|
|
2019-12-04 03:43:36 -06:00
|
|
|
let path = this.read_os_str_from_c_str(this.read_scalar(path_op)?.not_undef()?)?;
|
2019-10-03 09:33:36 -05:00
|
|
|
|
|
|
|
let result = remove_file(path).map(|_| 0);
|
|
|
|
|
2019-10-18 14:33:25 -05:00
|
|
|
this.try_unwrap_io_result(result)
|
2019-10-03 09:33:36 -05:00
|
|
|
}
|
|
|
|
|
2020-01-06 15:30:17 -06:00
|
|
|
fn symlink(
|
|
|
|
&mut self,
|
|
|
|
target_op: OpTy<'tcx, Tag>,
|
|
|
|
linkpath_op: OpTy<'tcx, Tag>
|
|
|
|
) -> InterpResult<'tcx, i32> {
|
|
|
|
#[cfg(target_family = "unix")]
|
|
|
|
fn create_link(src: PathBuf, dst: PathBuf) -> std::io::Result<()> {
|
|
|
|
std::os::unix::fs::symlink(src, dst)
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(target_family = "windows")]
|
|
|
|
fn create_link(src: PathBuf, dst: PathBuf) -> std::io::Result<()> {
|
|
|
|
use std::os::windows::fs;
|
|
|
|
if src.is_dir() {
|
|
|
|
fs::symlink_dir(src, dst)
|
|
|
|
} else {
|
2020-01-10 11:18:24 -06:00
|
|
|
fs::symlink_file(src, dst)
|
2020-01-06 15:30:17 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
let this = self.eval_context_mut();
|
|
|
|
|
|
|
|
this.check_no_isolation("symlink")?;
|
|
|
|
|
|
|
|
let target = this.read_os_str_from_c_str(this.read_scalar(target_op)?.not_undef()?)?.into();
|
|
|
|
let linkpath = this.read_os_str_from_c_str(this.read_scalar(linkpath_op)?.not_undef()?)?.into();
|
|
|
|
|
|
|
|
this.try_unwrap_io_result(create_link(target, linkpath).map(|_| 0))
|
|
|
|
}
|
|
|
|
|
2019-12-24 10:53:03 -06:00
|
|
|
fn stat(
|
|
|
|
&mut self,
|
|
|
|
path_op: OpTy<'tcx, Tag>,
|
2019-12-24 10:01:01 -06:00
|
|
|
buf_op: OpTy<'tcx, Tag>,
|
|
|
|
) -> InterpResult<'tcx, i32> {
|
|
|
|
let this = self.eval_context_mut();
|
2020-01-07 10:29:25 -06:00
|
|
|
this.check_no_isolation("stat")?;
|
|
|
|
// `stat` always follows symlinks.
|
|
|
|
this.stat_or_lstat(true, path_op, buf_op)
|
|
|
|
}
|
|
|
|
|
|
|
|
// `lstat` is used to get symlink metadata.
|
|
|
|
fn lstat(
|
|
|
|
&mut self,
|
|
|
|
path_op: OpTy<'tcx, Tag>,
|
|
|
|
buf_op: OpTy<'tcx, Tag>,
|
|
|
|
) -> InterpResult<'tcx, i32> {
|
|
|
|
let this = self.eval_context_mut();
|
|
|
|
this.check_no_isolation("lstat")?;
|
|
|
|
this.stat_or_lstat(false, path_op, buf_op)
|
|
|
|
}
|
|
|
|
|
2020-01-26 11:58:08 -06:00
|
|
|
fn fstat(
|
|
|
|
&mut self,
|
|
|
|
fd_op: OpTy<'tcx, Tag>,
|
|
|
|
buf_op: OpTy<'tcx, Tag>,
|
|
|
|
) -> InterpResult<'tcx, i32> {
|
|
|
|
let this = self.eval_context_mut();
|
|
|
|
|
|
|
|
this.check_no_isolation("fstat")?;
|
|
|
|
|
|
|
|
if this.tcx.sess.target.target.target_os.to_lowercase() != "macos" {
|
|
|
|
throw_unsup_format!("The `fstat` shim is only available for `macos` targets.")
|
|
|
|
}
|
|
|
|
|
|
|
|
let fd = this.read_scalar(fd_op)?.to_i32()?;
|
|
|
|
|
|
|
|
let metadata = match FileMetadata::from_fd(this, fd)? {
|
|
|
|
Some(metadata) => metadata,
|
|
|
|
None => return Ok(-1),
|
|
|
|
};
|
2020-01-28 19:43:55 -06:00
|
|
|
stat_macos_write_buf(this, metadata, buf_op)
|
2020-01-26 11:58:08 -06:00
|
|
|
}
|
|
|
|
|
2020-01-07 10:29:25 -06:00
|
|
|
fn stat_or_lstat(
|
|
|
|
&mut self,
|
|
|
|
follow_symlink: bool,
|
|
|
|
path_op: OpTy<'tcx, Tag>,
|
|
|
|
buf_op: OpTy<'tcx, Tag>,
|
|
|
|
) -> InterpResult<'tcx, i32> {
|
|
|
|
let this = self.eval_context_mut();
|
2019-12-24 10:01:01 -06:00
|
|
|
|
2019-12-25 10:30:01 -06:00
|
|
|
if this.tcx.sess.target.target.target_os.to_lowercase() != "macos" {
|
2020-01-10 11:01:05 -06:00
|
|
|
throw_unsup_format!("The `stat` and `lstat` shims are only available for `macos` targets.")
|
2019-12-25 10:30:01 -06:00
|
|
|
}
|
|
|
|
|
2019-12-24 10:53:03 -06:00
|
|
|
let path_scalar = this.read_scalar(path_op)?.not_undef()?;
|
2019-12-25 15:09:54 -06:00
|
|
|
let path: PathBuf = this.read_os_str_from_c_str(path_scalar)?.into();
|
2019-12-24 10:53:03 -06:00
|
|
|
|
2020-01-25 22:21:33 -06:00
|
|
|
let metadata = match FileMetadata::from_path(this, path, follow_symlink)? {
|
2019-12-26 12:30:04 -06:00
|
|
|
Some(metadata) => metadata,
|
2019-12-25 15:09:54 -06:00
|
|
|
None => return Ok(-1),
|
2019-12-24 10:53:03 -06:00
|
|
|
};
|
2020-01-28 19:43:55 -06:00
|
|
|
stat_macos_write_buf(this, metadata, buf_op)
|
2019-12-24 10:01:01 -06:00
|
|
|
}
|
|
|
|
|
2019-11-30 14:09:52 -06:00
|
|
|
fn statx(
|
|
|
|
&mut self,
|
2019-12-23 05:56:23 -06:00
|
|
|
dirfd_op: OpTy<'tcx, Tag>, // Should be an `int`
|
2019-11-30 14:09:52 -06:00
|
|
|
pathname_op: OpTy<'tcx, Tag>, // Should be a `const char *`
|
2019-12-23 05:56:23 -06:00
|
|
|
flags_op: OpTy<'tcx, Tag>, // Should be an `int`
|
|
|
|
_mask_op: OpTy<'tcx, Tag>, // Should be an `unsigned int`
|
|
|
|
statxbuf_op: OpTy<'tcx, Tag>, // Should be a `struct statx *`
|
2019-11-30 14:09:52 -06:00
|
|
|
) -> InterpResult<'tcx, i32> {
|
|
|
|
let this = self.eval_context_mut();
|
|
|
|
|
|
|
|
this.check_no_isolation("statx")?;
|
|
|
|
|
2019-12-25 15:09:54 -06:00
|
|
|
if this.tcx.sess.target.target.target_os.to_lowercase() != "linux" {
|
2019-12-26 12:30:04 -06:00
|
|
|
throw_unsup_format!("The `statx` shim is only available for `linux` targets.")
|
2019-12-25 15:09:54 -06:00
|
|
|
}
|
|
|
|
|
2019-11-30 14:09:52 -06:00
|
|
|
let statxbuf_scalar = this.read_scalar(statxbuf_op)?.not_undef()?;
|
|
|
|
let pathname_scalar = this.read_scalar(pathname_op)?.not_undef()?;
|
|
|
|
|
|
|
|
// If the statxbuf or pathname pointers are null, the function fails with `EFAULT`.
|
|
|
|
if this.is_null(statxbuf_scalar)? || this.is_null(pathname_scalar)? {
|
|
|
|
let efault = this.eval_libc("EFAULT")?;
|
|
|
|
this.set_last_error(efault)?;
|
|
|
|
return Ok(-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Under normal circumstances, we would use `deref_operand(statxbuf_op)` to produce a
|
|
|
|
// proper `MemPlace` and then write the results of this function to it. However, the
|
|
|
|
// `syscall` function is untyped. This means that all the `statx` parameters are provided
|
|
|
|
// as `isize`s instead of having the proper types. Thus, we have to recover the layout of
|
|
|
|
// `statxbuf_op` by using the `libc::statx` struct type.
|
|
|
|
let statxbuf_place = {
|
|
|
|
// FIXME: This long path is required because `libc::statx` is an struct and also a
|
|
|
|
// function and `resolve_path` is returning the latter.
|
|
|
|
let statx_ty = this
|
|
|
|
.resolve_path(&["libc", "unix", "linux_like", "linux", "gnu", "statx"])?
|
2020-01-06 13:53:41 -06:00
|
|
|
.monomorphic_ty(*this.tcx);
|
2019-11-30 14:09:52 -06:00
|
|
|
let statxbuf_ty = this.tcx.mk_mut_ptr(statx_ty);
|
|
|
|
let statxbuf_layout = this.layout_of(statxbuf_ty)?;
|
|
|
|
let statxbuf_imm = ImmTy::from_scalar(statxbuf_scalar, statxbuf_layout);
|
|
|
|
this.ref_to_mplace(statxbuf_imm)?
|
|
|
|
};
|
|
|
|
|
|
|
|
let path: PathBuf = this.read_os_str_from_c_str(pathname_scalar)?.into();
|
|
|
|
// `flags` should be a `c_int` but the `syscall` function provides an `isize`.
|
2019-12-23 05:56:23 -06:00
|
|
|
let flags: i32 =
|
|
|
|
this.read_scalar(flags_op)?.to_machine_isize(&*this.tcx)?.try_into().map_err(|e| {
|
|
|
|
err_unsup_format!("Failed to convert pointer sized operand to integer: {}", e)
|
|
|
|
})?;
|
2020-01-25 22:21:33 -06:00
|
|
|
let empty_path_flag = flags & this.eval_libc("AT_EMPTY_PATH")?.to_i32()? != 0;
|
2019-11-30 14:09:52 -06:00
|
|
|
// `dirfd` should be a `c_int` but the `syscall` function provides an `isize`.
|
2019-12-23 05:56:23 -06:00
|
|
|
let dirfd: i32 =
|
|
|
|
this.read_scalar(dirfd_op)?.to_machine_isize(&*this.tcx)?.try_into().map_err(|e| {
|
|
|
|
err_unsup_format!("Failed to convert pointer sized operand to integer: {}", e)
|
|
|
|
})?;
|
2020-01-28 19:43:55 -06:00
|
|
|
// We only support:
|
|
|
|
// * interpreting `path` as an absolute directory,
|
|
|
|
// * interpreting `path` as a path relative to `dirfd` when the latter is `AT_FDCWD`, or
|
|
|
|
// * interpreting `dirfd` as any file descriptor when `path` is empty and AT_EMPTY_PATH is
|
|
|
|
// set.
|
2020-01-28 22:59:28 -06:00
|
|
|
// Other behaviors cannot be tested from `libstd` and thus are not implemented. If you
|
|
|
|
// found this error, please open an issue reporting it.
|
2020-01-25 22:21:33 -06:00
|
|
|
if !(
|
|
|
|
path.is_absolute() ||
|
|
|
|
dirfd == this.eval_libc_i32("AT_FDCWD")? ||
|
|
|
|
(path.as_os_str().is_empty() && empty_path_flag)
|
|
|
|
) {
|
2019-11-30 14:09:52 -06:00
|
|
|
throw_unsup_format!(
|
2020-01-28 19:43:55 -06:00
|
|
|
"Using statx is only supported with absolute paths, relative paths with the file \
|
|
|
|
descriptor `AT_FDCWD`, and empty paths with the `AT_EMPTY_PATH` flag set and any \
|
|
|
|
file descriptor"
|
2019-11-30 14:09:52 -06:00
|
|
|
)
|
|
|
|
}
|
|
|
|
|
|
|
|
// the `_mask_op` paramter specifies the file information that the caller requested.
|
|
|
|
// However `statx` is allowed to return information that was not requested or to not
|
|
|
|
// return information that was requested. This `mask` represents the information we can
|
|
|
|
// actually provide in any host platform.
|
|
|
|
let mut mask =
|
|
|
|
this.eval_libc("STATX_TYPE")?.to_u32()? | this.eval_libc("STATX_SIZE")?.to_u32()?;
|
|
|
|
|
|
|
|
// If the `AT_SYMLINK_NOFOLLOW` flag is set, we query the file's metadata without following
|
|
|
|
// symbolic links.
|
2019-12-26 11:12:19 -06:00
|
|
|
let follow_symlink = flags & this.eval_libc("AT_SYMLINK_NOFOLLOW")?.to_i32()? == 0;
|
2019-11-30 14:09:52 -06:00
|
|
|
|
2020-01-25 22:21:33 -06:00
|
|
|
// If the path is empty, and the AT_EMPTY_PATH flag is set, we query the open file
|
|
|
|
// represented by dirfd, whether it's a directory or otherwise.
|
|
|
|
let metadata = if path.as_os_str().is_empty() && empty_path_flag {
|
|
|
|
FileMetadata::from_fd(this, dirfd)?
|
|
|
|
} else {
|
|
|
|
FileMetadata::from_path(this, path, follow_symlink)?
|
|
|
|
};
|
|
|
|
let metadata = match metadata {
|
2019-12-26 12:30:04 -06:00
|
|
|
Some(metadata) => metadata,
|
2019-12-25 15:09:54 -06:00
|
|
|
None => return Ok(-1),
|
2019-11-30 14:09:52 -06:00
|
|
|
};
|
|
|
|
|
|
|
|
// The `mode` field specifies the type of the file and the permissions over the file for
|
|
|
|
// the owner, its group and other users. Given that we can only provide the file type
|
|
|
|
// without using platform specific methods, we only set the bits corresponding to the file
|
|
|
|
// type. This should be an `__u16` but `libc` provides its values as `u32`.
|
2019-12-26 12:30:04 -06:00
|
|
|
let mode: u16 = metadata
|
2019-12-25 15:09:54 -06:00
|
|
|
.mode
|
2019-12-23 05:56:23 -06:00
|
|
|
.to_u32()?
|
|
|
|
.try_into()
|
2019-12-25 15:09:54 -06:00
|
|
|
.unwrap_or_else(|_| bug!("libc contains bad value for constant"));
|
2019-11-30 14:09:52 -06:00
|
|
|
|
2019-12-26 11:12:19 -06:00
|
|
|
// We need to set the corresponding bits of `mask` if the access, creation and modification
|
|
|
|
// times were available. Otherwise we let them be zero.
|
2019-12-26 12:30:04 -06:00
|
|
|
let (access_sec, access_nsec) = metadata.accessed.map(|tup| {
|
2019-12-25 15:09:54 -06:00
|
|
|
mask |= this.eval_libc("STATX_ATIME")?.to_u32()?;
|
2019-12-25 21:22:25 -06:00
|
|
|
InterpResult::Ok(tup)
|
|
|
|
}).unwrap_or(Ok((0, 0)))?;
|
2019-11-30 14:09:52 -06:00
|
|
|
|
2019-12-26 12:30:04 -06:00
|
|
|
let (created_sec, created_nsec) = metadata.created.map(|tup| {
|
2019-12-25 15:09:54 -06:00
|
|
|
mask |= this.eval_libc("STATX_BTIME")?.to_u32()?;
|
2019-12-25 21:22:25 -06:00
|
|
|
InterpResult::Ok(tup)
|
|
|
|
}).unwrap_or(Ok((0, 0)))?;
|
2019-11-30 14:09:52 -06:00
|
|
|
|
2019-12-26 12:30:04 -06:00
|
|
|
let (modified_sec, modified_nsec) = metadata.modified.map(|tup| {
|
2019-12-25 15:09:54 -06:00
|
|
|
mask |= this.eval_libc("STATX_MTIME")?.to_u32()?;
|
2019-12-25 21:22:25 -06:00
|
|
|
InterpResult::Ok(tup)
|
|
|
|
}).unwrap_or(Ok((0, 0)))?;
|
2019-11-30 14:09:52 -06:00
|
|
|
|
|
|
|
let __u32_layout = this.libc_ty_layout("__u32")?;
|
|
|
|
let __u64_layout = this.libc_ty_layout("__u64")?;
|
|
|
|
let __u16_layout = this.libc_ty_layout("__u16")?;
|
|
|
|
|
|
|
|
// Now we transform all this fields into `ImmTy`s and write them to `statxbuf`. We write a
|
|
|
|
// zero for the unavailable fields.
|
|
|
|
let imms = [
|
2019-12-23 05:56:23 -06:00
|
|
|
immty_from_uint_checked(mask, __u32_layout)?, // stx_mask
|
2019-11-30 14:09:52 -06:00
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // stx_blksize
|
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_attributes
|
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // stx_nlink
|
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // stx_uid
|
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // stx_gid
|
2019-12-23 05:56:23 -06:00
|
|
|
immty_from_uint_checked(mode, __u16_layout)?, // stx_mode
|
2019-11-30 14:09:52 -06:00
|
|
|
immty_from_uint_checked(0u128, __u16_layout)?, // statx padding
|
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_ino
|
2019-12-26 12:30:04 -06:00
|
|
|
immty_from_uint_checked(metadata.size, __u64_layout)?, // stx_size
|
2019-11-30 14:09:52 -06:00
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_blocks
|
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_attributes
|
|
|
|
immty_from_uint_checked(access_sec, __u64_layout)?, // stx_atime.tv_sec
|
|
|
|
immty_from_uint_checked(access_nsec, __u32_layout)?, // stx_atime.tv_nsec
|
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // statx_timestamp padding
|
|
|
|
immty_from_uint_checked(created_sec, __u64_layout)?, // stx_btime.tv_sec
|
|
|
|
immty_from_uint_checked(created_nsec, __u32_layout)?, // stx_btime.tv_nsec
|
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // statx_timestamp padding
|
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_ctime.tv_sec
|
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // stx_ctime.tv_nsec
|
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // statx_timestamp padding
|
|
|
|
immty_from_uint_checked(modified_sec, __u64_layout)?, // stx_mtime.tv_sec
|
|
|
|
immty_from_uint_checked(modified_nsec, __u32_layout)?, // stx_mtime.tv_nsec
|
|
|
|
immty_from_uint_checked(0u128, __u32_layout)?, // statx_timestamp padding
|
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_rdev_major
|
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_rdev_minor
|
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_dev_major
|
|
|
|
immty_from_uint_checked(0u128, __u64_layout)?, // stx_dev_minor
|
|
|
|
];
|
|
|
|
|
2020-01-30 06:38:49 -06:00
|
|
|
this.write_packed_immediates(statxbuf_place, &imms)?;
|
2019-11-30 14:09:52 -06:00
|
|
|
|
|
|
|
Ok(0)
|
|
|
|
}
|
|
|
|
|
2019-10-24 08:44:13 -05:00
|
|
|
/// Function used when a handle is not found inside `FileHandler`. It returns `Ok(-1)`and sets
|
|
|
|
/// the last OS error to `libc::EBADF` (invalid file descriptor). This function uses
|
|
|
|
/// `T: From<i32>` instead of `i32` directly because some fs functions return different integer
|
|
|
|
/// types (like `read`, that returns an `i64`).
|
|
|
|
fn handle_not_found<T: From<i32>>(&mut self) -> InterpResult<'tcx, T> {
|
2019-09-30 15:18:23 -05:00
|
|
|
let this = self.eval_context_mut();
|
2019-10-24 08:44:13 -05:00
|
|
|
let ebadf = this.eval_libc("EBADF")?;
|
|
|
|
this.set_last_error(ebadf)?;
|
|
|
|
Ok((-1).into())
|
2019-09-30 14:07:08 -05:00
|
|
|
}
|
2020-01-26 16:45:05 -06:00
|
|
|
|
|
|
|
fn rename(
|
|
|
|
&mut self,
|
|
|
|
oldpath_op: OpTy<'tcx, Tag>,
|
|
|
|
newpath_op: OpTy<'tcx, Tag>,
|
|
|
|
) -> InterpResult<'tcx, i32> {
|
|
|
|
let this = self.eval_context_mut();
|
|
|
|
|
|
|
|
this.check_no_isolation("rename")?;
|
|
|
|
|
|
|
|
let oldpath_scalar = this.read_scalar(oldpath_op)?.not_undef()?;
|
|
|
|
let newpath_scalar = this.read_scalar(newpath_op)?.not_undef()?;
|
|
|
|
|
|
|
|
if this.is_null(oldpath_scalar)? || this.is_null(newpath_scalar)? {
|
|
|
|
let efault = this.eval_libc("EFAULT")?;
|
|
|
|
this.set_last_error(efault)?;
|
|
|
|
return Ok(-1);
|
|
|
|
}
|
|
|
|
|
|
|
|
let oldpath = this.read_os_str_from_c_str(oldpath_scalar)?;
|
|
|
|
let newpath = this.read_os_str_from_c_str(newpath_scalar)?;
|
|
|
|
|
|
|
|
let result = rename(oldpath, newpath).map(|_| 0);
|
|
|
|
|
|
|
|
this.try_unwrap_io_result(result)
|
|
|
|
}
|
2019-09-24 17:28:00 -05:00
|
|
|
}
|
2019-11-30 14:09:52 -06:00
|
|
|
|
2019-12-26 11:12:19 -06:00
|
|
|
/// Extracts the number of seconds and nanoseconds elapsed between `time` and the unix epoch when
|
|
|
|
/// `time` is Ok. Returns `None` if `time` is an error. Fails if `time` happens before the unix
|
|
|
|
/// epoch.
|
|
|
|
fn extract_sec_and_nsec<'tcx>(
|
|
|
|
time: std::io::Result<SystemTime>
|
|
|
|
) -> InterpResult<'tcx, Option<(u64, u32)>> {
|
2019-12-25 15:09:54 -06:00
|
|
|
time.ok().map(|time| {
|
2019-11-30 14:09:52 -06:00
|
|
|
let duration = system_time_to_duration(&time)?;
|
|
|
|
Ok((duration.as_secs(), duration.subsec_nanos()))
|
2019-12-25 15:09:54 -06:00
|
|
|
}).transpose()
|
|
|
|
}
|
|
|
|
|
2019-12-26 12:30:04 -06:00
|
|
|
/// Stores a file's metadata in order to avoid code duplication in the different metadata related
|
|
|
|
/// shims.
|
|
|
|
struct FileMetadata {
|
2019-12-25 15:09:54 -06:00
|
|
|
mode: Scalar<Tag>,
|
|
|
|
size: u64,
|
|
|
|
created: Option<(u64, u32)>,
|
|
|
|
accessed: Option<(u64, u32)>,
|
|
|
|
modified: Option<(u64, u32)>,
|
|
|
|
}
|
|
|
|
|
2019-12-26 12:30:04 -06:00
|
|
|
impl FileMetadata {
|
2020-01-25 22:21:33 -06:00
|
|
|
fn from_path<'tcx, 'mir>(
|
2019-12-25 21:22:25 -06:00
|
|
|
ecx: &mut MiriEvalContext<'mir, 'tcx>,
|
|
|
|
path: PathBuf,
|
2019-12-26 11:12:19 -06:00
|
|
|
follow_symlink: bool
|
2019-12-26 12:30:04 -06:00
|
|
|
) -> InterpResult<'tcx, Option<FileMetadata>> {
|
2019-12-26 11:12:19 -06:00
|
|
|
let metadata = if follow_symlink {
|
2019-12-26 12:30:04 -06:00
|
|
|
std::fs::metadata(path)
|
|
|
|
} else {
|
2019-12-25 15:09:54 -06:00
|
|
|
std::fs::symlink_metadata(path)
|
|
|
|
};
|
|
|
|
|
2020-01-25 22:21:33 -06:00
|
|
|
FileMetadata::from_meta(ecx, metadata)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn from_fd<'tcx, 'mir>(
|
|
|
|
ecx: &mut MiriEvalContext<'mir, 'tcx>,
|
|
|
|
fd: i32,
|
|
|
|
) -> InterpResult<'tcx, Option<FileMetadata>> {
|
|
|
|
let option = ecx.machine.file_handler.handles.get(&fd);
|
|
|
|
let handle = match option {
|
|
|
|
Some(handle) => handle,
|
|
|
|
None => return ecx.handle_not_found().map(|_: i32| None),
|
|
|
|
};
|
|
|
|
let metadata = handle.file.metadata();
|
|
|
|
|
|
|
|
FileMetadata::from_meta(ecx, metadata)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn from_meta<'tcx, 'mir>(
|
|
|
|
ecx: &mut MiriEvalContext<'mir, 'tcx>,
|
|
|
|
metadata: Result<std::fs::Metadata, std::io::Error>,
|
|
|
|
) -> InterpResult<'tcx, Option<FileMetadata>> {
|
2019-12-25 15:09:54 -06:00
|
|
|
let metadata = match metadata {
|
|
|
|
Ok(metadata) => metadata,
|
|
|
|
Err(e) => {
|
|
|
|
ecx.set_last_error_from_io_error(e)?;
|
|
|
|
return Ok(None);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
let file_type = metadata.file_type();
|
|
|
|
|
|
|
|
let mode_name = if file_type.is_file() {
|
|
|
|
"S_IFREG"
|
|
|
|
} else if file_type.is_dir() {
|
|
|
|
"S_IFDIR"
|
|
|
|
} else {
|
|
|
|
"S_IFLNK"
|
|
|
|
};
|
|
|
|
|
|
|
|
let mode = ecx.eval_libc(mode_name)?;
|
|
|
|
|
|
|
|
let size = metadata.len();
|
|
|
|
|
|
|
|
let created = extract_sec_and_nsec(metadata.created())?;
|
|
|
|
let accessed = extract_sec_and_nsec(metadata.accessed())?;
|
|
|
|
let modified = extract_sec_and_nsec(metadata.modified())?;
|
|
|
|
|
|
|
|
// FIXME: Provide more fields using platform specific methods.
|
2019-12-26 12:30:04 -06:00
|
|
|
Ok(Some(FileMetadata { mode, size, created, accessed, modified }))
|
2019-11-30 14:09:52 -06:00
|
|
|
}
|
|
|
|
}
|
2020-01-26 11:58:08 -06:00
|
|
|
|
2020-01-28 19:43:55 -06:00
|
|
|
fn stat_macos_write_buf<'tcx, 'mir>(
|
2020-01-26 11:58:08 -06:00
|
|
|
ecx: &mut MiriEvalContext<'mir, 'tcx>,
|
|
|
|
metadata: FileMetadata,
|
|
|
|
buf_op: OpTy<'tcx, Tag>,
|
|
|
|
) -> InterpResult<'tcx, i32> {
|
|
|
|
let mode: u16 = metadata.mode.to_u16()?;
|
|
|
|
|
|
|
|
let (access_sec, access_nsec) = metadata.accessed.unwrap_or((0, 0));
|
|
|
|
let (created_sec, created_nsec) = metadata.created.unwrap_or((0, 0));
|
|
|
|
let (modified_sec, modified_nsec) = metadata.modified.unwrap_or((0, 0));
|
|
|
|
|
|
|
|
let dev_t_layout = ecx.libc_ty_layout("dev_t")?;
|
|
|
|
let mode_t_layout = ecx.libc_ty_layout("mode_t")?;
|
|
|
|
let nlink_t_layout = ecx.libc_ty_layout("nlink_t")?;
|
|
|
|
let ino_t_layout = ecx.libc_ty_layout("ino_t")?;
|
|
|
|
let uid_t_layout = ecx.libc_ty_layout("uid_t")?;
|
|
|
|
let gid_t_layout = ecx.libc_ty_layout("gid_t")?;
|
|
|
|
let time_t_layout = ecx.libc_ty_layout("time_t")?;
|
|
|
|
let long_layout = ecx.libc_ty_layout("c_long")?;
|
|
|
|
let off_t_layout = ecx.libc_ty_layout("off_t")?;
|
|
|
|
let blkcnt_t_layout = ecx.libc_ty_layout("blkcnt_t")?;
|
|
|
|
let blksize_t_layout = ecx.libc_ty_layout("blksize_t")?;
|
|
|
|
let uint32_t_layout = ecx.libc_ty_layout("uint32_t")?;
|
|
|
|
|
|
|
|
// We need to add 32 bits of padding after `st_rdev` if we are on a 64-bit platform.
|
|
|
|
let pad_layout = if ecx.tcx.sess.target.ptr_width == 64 {
|
|
|
|
uint32_t_layout
|
|
|
|
} else {
|
|
|
|
ecx.layout_of(ecx.tcx.mk_unit())?
|
|
|
|
};
|
|
|
|
|
|
|
|
let imms = [
|
|
|
|
immty_from_uint_checked(0u128, dev_t_layout)?, // st_dev
|
|
|
|
immty_from_uint_checked(mode, mode_t_layout)?, // st_mode
|
|
|
|
immty_from_uint_checked(0u128, nlink_t_layout)?, // st_nlink
|
|
|
|
immty_from_uint_checked(0u128, ino_t_layout)?, // st_ino
|
|
|
|
immty_from_uint_checked(0u128, uid_t_layout)?, // st_uid
|
|
|
|
immty_from_uint_checked(0u128, gid_t_layout)?, // st_gid
|
|
|
|
immty_from_uint_checked(0u128, dev_t_layout)?, // st_rdev
|
|
|
|
immty_from_uint_checked(0u128, pad_layout)?, // padding for 64-bit targets
|
|
|
|
immty_from_uint_checked(access_sec, time_t_layout)?, // st_atime
|
|
|
|
immty_from_uint_checked(access_nsec, long_layout)?, // st_atime_nsec
|
|
|
|
immty_from_uint_checked(modified_sec, time_t_layout)?, // st_mtime
|
|
|
|
immty_from_uint_checked(modified_nsec, long_layout)?, // st_mtime_nsec
|
|
|
|
immty_from_uint_checked(0u128, time_t_layout)?, // st_ctime
|
|
|
|
immty_from_uint_checked(0u128, long_layout)?, // st_ctime_nsec
|
|
|
|
immty_from_uint_checked(created_sec, time_t_layout)?, // st_birthtime
|
|
|
|
immty_from_uint_checked(created_nsec, long_layout)?, // st_birthtime_nsec
|
|
|
|
immty_from_uint_checked(metadata.size, off_t_layout)?, // st_size
|
|
|
|
immty_from_uint_checked(0u128, blkcnt_t_layout)?, // st_blocks
|
|
|
|
immty_from_uint_checked(0u128, blksize_t_layout)?, // st_blksize
|
|
|
|
immty_from_uint_checked(0u128, uint32_t_layout)?, // st_flags
|
|
|
|
immty_from_uint_checked(0u128, uint32_t_layout)?, // st_gen
|
|
|
|
];
|
|
|
|
|
|
|
|
let buf = ecx.deref_operand(buf_op)?;
|
2020-01-30 06:38:49 -06:00
|
|
|
ecx.write_packed_immediates(buf, &imms)?;
|
2020-01-26 11:58:08 -06:00
|
|
|
|
|
|
|
Ok(0)
|
|
|
|
}
|