diff options
| -rw-r--r-- | src/tools/miri/.github/workflows/ci.yml | 11 | ||||
| -rw-r--r-- | src/tools/miri/src/lib.rs | 2 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/foreign_items.rs | 9 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/time.rs | 12 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/unix/fd.rs | 36 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/unix/foreign_items.rs | 25 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/unix/fs.rs | 139 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/unix/linux/epoll.rs | 12 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/unix/linux/mem.rs | 4 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/unix/linux/sync.rs | 17 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/unix/mem.rs | 10 | ||||
| -rw-r--r-- | src/tools/miri/src/shims/windows/sync.rs | 2 |
12 files changed, 112 insertions, 167 deletions
diff --git a/src/tools/miri/.github/workflows/ci.yml b/src/tools/miri/.github/workflows/ci.yml index 400a012deed..2e491319822 100644 --- a/src/tools/miri/.github/workflows/ci.yml +++ b/src/tools/miri/.github/workflows/ci.yml @@ -34,7 +34,7 @@ jobs: # The `style` job only runs on Linux; this makes sure the Windows-host-specific # code is also covered by clippy. - name: Check clippy - if: matrix.os == 'windows-latest' + if: ${{ matrix.os == 'windows-latest' }} run: ./miri clippy -- -D warnings - name: Test Miri @@ -58,14 +58,15 @@ jobs: - name: rustdoc run: RUSTDOCFLAGS="-Dwarnings" ./miri doc --document-private-items + # Summary job for the merge queue. + # ALL THE PREVIOUS JOBS NEED TO BE ADDED TO THE `needs` SECTION OF THIS JOB! + # And they should be added below in `cron-fail-notify` as well. conclusion: needs: [build, style] # We need to ensure this job does *not* get skipped if its dependencies fail, # because a skipped job is considered a success by GitHub. So we have to # overwrite `if:`. We use `!cancelled()` to ensure the job does still not get run # when the workflow is canceled manually. - # - # ALL THE PREVIOUS JOBS NEED TO BE ADDED TO THE `needs` SECTION OF THIS JOB! if: ${{ !cancelled() }} runs-on: ubuntu-latest steps: @@ -86,7 +87,7 @@ jobs: # ... and create a PR. pull-requests: write needs: [build, style] - if: github.event_name == 'schedule' && failure() + if: ${{ github.event_name == 'schedule' && failure() }} steps: # Send a Zulip notification - name: Install zulip-send @@ -138,7 +139,7 @@ jobs: git push -u origin $BRANCH - name: Create Pull Request run: | - PR=$(gh pr create -B master --title 'Automatic Rustup' --body '') + PR=$(gh pr create -B master --title 'Automatic Rustup' --body 'Please close and re-open this PR to trigger CI, then enable auto-merge.') ~/.local/bin/zulip-send --user $ZULIP_BOT_EMAIL --api-key $ZULIP_API_TOKEN --site https://rust-lang.zulipchat.com \ --stream miri --subject "Miri Build Failure ($(date -u +%Y-%m))" \ --message "A PR doing a rustc-pull [has been automatically created]($PR) for your convenience." diff --git a/src/tools/miri/src/lib.rs b/src/tools/miri/src/lib.rs index 660f2e493bc..938d1ca319e 100644 --- a/src/tools/miri/src/lib.rs +++ b/src/tools/miri/src/lib.rs @@ -147,7 +147,7 @@ pub use crate::range_map::RangeMap; pub use crate::shims::EmulateItemResult; pub use crate::shims::env::{EnvVars, EvalContextExt as _}; pub use crate::shims::foreign_items::{DynSym, EvalContextExt as _}; -pub use crate::shims::io_error::{EvalContextExt as _, LibcError}; +pub use crate::shims::io_error::{EvalContextExt as _, IoError, LibcError}; pub use crate::shims::os_str::EvalContextExt as _; pub use crate::shims::panic::{CatchUnwindData, EvalContextExt as _}; pub use crate::shims::time::EvalContextExt as _; diff --git a/src/tools/miri/src/shims/foreign_items.rs b/src/tools/miri/src/shims/foreign_items.rs index f6f91e58969..12f8facfd02 100644 --- a/src/tools/miri/src/shims/foreign_items.rs +++ b/src/tools/miri/src/shims/foreign_items.rs @@ -447,8 +447,7 @@ trait EvalContextExtPriv<'tcx>: crate::MiriInterpCxExt<'tcx> { } else { // If this does not fit in an isize, return null and, on Unix, set errno. if this.target_os_is_unix() { - let einval = this.eval_libc("ENOMEM"); - this.set_last_error(einval)?; + this.set_last_error(LibcError("ENOMEM"))?; } this.write_null(dest)?; } @@ -464,8 +463,7 @@ trait EvalContextExtPriv<'tcx>: crate::MiriInterpCxExt<'tcx> { } else { // On size overflow, return null and, on Unix, set errno. if this.target_os_is_unix() { - let einval = this.eval_libc("ENOMEM"); - this.set_last_error(einval)?; + this.set_last_error(LibcError("ENOMEM"))?; } this.write_null(dest)?; } @@ -486,8 +484,7 @@ trait EvalContextExtPriv<'tcx>: crate::MiriInterpCxExt<'tcx> { } else { // If this does not fit in an isize, return null and, on Unix, set errno. if this.target_os_is_unix() { - let einval = this.eval_libc("ENOMEM"); - this.set_last_error(einval)?; + this.set_last_error(LibcError("ENOMEM"))?; } this.write_null(dest)?; } diff --git a/src/tools/miri/src/shims/time.rs b/src/tools/miri/src/shims/time.rs index 12c7679608d..6436823b0fd 100644 --- a/src/tools/miri/src/shims/time.rs +++ b/src/tools/miri/src/shims/time.rs @@ -81,9 +81,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { } else if relative_clocks.contains(&clk_id) { this.machine.clock.now().duration_since(this.machine.clock.epoch()) } else { - let einval = this.eval_libc("EINVAL"); - this.set_last_error(einval)?; - return interp_ok(Scalar::from_i32(-1)); + return this.set_last_error_and_return_i32(LibcError("EINVAL")); }; let tv_sec = duration.as_secs(); @@ -109,9 +107,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // Using tz is obsolete and should always be null let tz = this.read_pointer(tz_op)?; if !this.ptr_is_null(tz)? { - let einval = this.eval_libc("EINVAL"); - this.set_last_error(einval)?; - return interp_ok(Scalar::from_i32(-1)); + return this.set_last_error_and_return_i32(LibcError("EINVAL")); } let duration = system_time_to_duration(&SystemTime::now())?; @@ -323,9 +319,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let duration = match this.read_timespec(&req)? { Some(duration) => duration, None => { - let einval = this.eval_libc("EINVAL"); - this.set_last_error(einval)?; - return interp_ok(Scalar::from_i32(-1)); + return this.set_last_error_and_return_i32(LibcError("EINVAL")); } }; diff --git a/src/tools/miri/src/shims/unix/fd.rs b/src/tools/miri/src/shims/unix/fd.rs index c21982ee379..f3db56695fc 100644 --- a/src/tools/miri/src/shims/unix/fd.rs +++ b/src/tools/miri/src/shims/unix/fd.rs @@ -423,7 +423,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let this = self.eval_context_mut(); let Some(fd) = this.machine.fds.get(old_fd_num) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; interp_ok(Scalar::from_i32(this.machine.fds.insert(fd))) } @@ -432,7 +432,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let this = self.eval_context_mut(); let Some(fd) = this.machine.fds.get(old_fd_num) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; if new_fd_num != old_fd_num { // Close new_fd if it is previously opened. @@ -448,7 +448,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { fn flock(&mut self, fd_num: i32, op: i32) -> InterpResult<'tcx, Scalar> { let this = self.eval_context_mut(); let Some(fd) = this.machine.fds.get(fd_num) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; // We need to check that there aren't unsupported options in `op`. @@ -498,11 +498,11 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // `FD_CLOEXEC` value without checking if the flag is set for the file because `std` // always sets this flag when opening a file. However we still need to check that the // file itself is open. - interp_ok(Scalar::from_i32(if this.machine.fds.is_fd_num(fd_num) { - this.eval_libc_i32("FD_CLOEXEC") + if !this.machine.fds.is_fd_num(fd_num) { + this.set_last_error_and_return_i32(LibcError("EBADF")) } else { - this.fd_not_found()? - })) + interp_ok(this.eval_libc("FD_CLOEXEC")) + } } cmd if cmd == f_dupfd || cmd == f_dupfd_cloexec => { // Note that we always assume the FD_CLOEXEC flag is set for every open file, in part @@ -521,7 +521,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { if let Some(fd) = this.machine.fds.get(fd_num) { interp_ok(Scalar::from_i32(this.machine.fds.insert_with_min_num(fd, start))) } else { - interp_ok(Scalar::from_i32(this.fd_not_found()?)) + this.set_last_error_and_return_i32(LibcError("EBADF")) } } cmd if this.tcx.sess.target.os == "macos" @@ -547,7 +547,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let fd_num = this.read_scalar(fd_op)?.to_i32()?; let Some(fd) = this.machine.fds.remove(fd_num) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; let result = fd.close(this.machine.communicate(), this)?; // return `0` if close is successful @@ -555,16 +555,6 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { interp_ok(Scalar::from_i32(this.try_unwrap_io_result(result)?)) } - /// Function used when a file descriptor does not exist. 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 fd_not_found<T: From<i32>>(&mut self) -> InterpResult<'tcx, T> { - let this = self.eval_context_mut(); - this.set_last_error(LibcError("EBADF"))?; - interp_ok((-1).into()) - } - /// Read data from `fd` into buffer specified by `buf` and `count`. /// /// If `offset` is `None`, reads data from current cursor position associated with `fd` @@ -598,9 +588,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // We temporarily dup the FD to be able to retain mutable access to `this`. let Some(fd) = this.machine.fds.get(fd_num) else { trace!("read: FD not found"); - let res: i32 = this.fd_not_found()?; - this.write_int(res, dest)?; - return interp_ok(()); + return this.set_last_error_and_return(LibcError("EBADF"), dest); }; trace!("read: FD mapped to {fd:?}"); @@ -645,9 +633,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // We temporarily dup the FD to be able to retain mutable access to `this`. let Some(fd) = this.machine.fds.get(fd_num) else { - let res: i32 = this.fd_not_found()?; - this.write_int(res, dest)?; - return interp_ok(()); + return this.set_last_error_and_return(LibcError("EBADF"), dest); }; match offset { diff --git a/src/tools/miri/src/shims/unix/foreign_items.rs b/src/tools/miri/src/shims/unix/foreign_items.rs index 7ba98981920..355c93c444c 100644 --- a/src/tools/miri/src/shims/unix/foreign_items.rs +++ b/src/tools/miri/src/shims/unix/foreign_items.rs @@ -362,8 +362,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // FreeBSD: https://man.freebsd.org/cgi/man.cgi?query=reallocarray match this.compute_size_in_bytes(Size::from_bytes(size), nmemb) { None => { - let enmem = this.eval_libc("ENOMEM"); - this.set_last_error(enmem)?; + this.set_last_error(LibcError("ENOMEM"))?; this.write_null(dest)?; } Some(len) => { @@ -653,13 +652,10 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let chunk_size = CpuAffinityMask::chunk_size(this); if this.ptr_is_null(mask)? { - let efault = this.eval_libc("EFAULT"); - this.set_last_error(efault)?; - this.write_int(-1, dest)?; + this.set_last_error_and_return(LibcError("EFAULT"), dest)?; } else if cpusetsize == 0 || cpusetsize.checked_rem(chunk_size).unwrap() != 0 { // we only copy whole chunks of size_of::<c_ulong>() - this.set_last_error(LibcError("EINVAL"))?; - this.write_int(-1, dest)?; + this.set_last_error_and_return(LibcError("EINVAL"), dest)?; } else if let Some(cpuset) = this.machine.thread_cpu_affinity.get(&thread_id) { let cpuset = cpuset.clone(); // we only copy whole chunks of size_of::<c_ulong>() @@ -668,9 +664,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { this.write_null(dest)?; } else { // The thread whose ID is pid could not be found - let esrch = this.eval_libc("ESRCH"); - this.set_last_error(esrch)?; - this.write_int(-1, dest)?; + this.set_last_error_and_return(LibcError("ESRCH"), dest)?; } } "sched_setaffinity" => { @@ -695,9 +689,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { }; if this.ptr_is_null(mask)? { - let efault = this.eval_libc("EFAULT"); - this.set_last_error(efault)?; - this.write_int(-1, dest)?; + this.set_last_error_and_return(LibcError("EFAULT"), dest)?; } else { // NOTE: cpusetsize might be smaller than `CpuAffinityMask::CPU_MASK_BYTES`. // Any unspecified bytes are treated as zero here (none of the CPUs are configured). @@ -713,8 +705,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { } None => { // The intersection between the mask and the available CPUs was empty. - this.set_last_error(LibcError("EINVAL"))?; - this.write_int(-1, dest)?; + this.set_last_error_and_return(LibcError("EINVAL"), dest)?; } } } @@ -770,9 +761,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // macOS: https://keith.github.io/xcode-man-pages/getentropy.2.html // Solaris/Illumos: https://illumos.org/man/3C/getentropy if bufsize > 256 { - let err = this.eval_libc("EIO"); - this.set_last_error(err)?; - this.write_int(-1, dest)?; + this.set_last_error_and_return(LibcError("EIO"), dest)?; } else { this.gen_random(buf, bufsize)?; this.write_null(dest)?; diff --git a/src/tools/miri/src/shims/unix/fs.rs b/src/tools/miri/src/shims/unix/fs.rs index fcb824ab35b..f7436d7f089 100644 --- a/src/tools/miri/src/shims/unix/fs.rs +++ b/src/tools/miri/src/shims/unix/fs.rs @@ -149,6 +149,7 @@ impl FileDescription for FileHandle { // to handle possible errors correctly. let result = self.file.sync_all(); // Now we actually close the file and return the result. + drop(*self); interp_ok(result) } else { // We drop the file, this closes it but ignores any errors @@ -157,6 +158,7 @@ impl FileDescription for FileHandle { // `/dev/urandom` which are read-only. Check // https://github.com/rust-lang/miri/issues/999#issuecomment-568920439 // for a deeper discussion. + drop(*self); interp_ok(Ok(())) } } @@ -229,6 +231,8 @@ impl FileDescription for FileHandle { TRUE => Ok(()), FALSE => { let mut err = io::Error::last_os_error(); + // This only runs on Windows hosts so we can use `raw_os_error`. + // We have to be careful not to forward that error code to target code. let code: u32 = err.raw_os_error().unwrap().try_into().unwrap(); if matches!(code, ERROR_IO_PENDING | ERROR_LOCK_VIOLATION) { if lock_nb { @@ -337,15 +341,10 @@ trait EvalContextExtPrivate<'tcx>: crate::MiriInterpCxExt<'tcx> { _ => interp_ok(this.eval_libc("DT_UNKNOWN").to_u8()?.into()), } } - Err(e) => - match e.raw_os_error() { - Some(error) => interp_ok(error), - None => - throw_unsup_format!( - "the error {} couldn't be converted to a return value", - e - ), - }, + Err(_) => { + // Fallback on error + interp_ok(this.eval_libc("DT_UNKNOWN").to_u8()?.into()) + } } } } @@ -595,7 +594,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let communicate = this.machine.communicate(); let Some(fd) = this.machine.fds.get(fd_num) else { - return interp_ok(Scalar::from_i64(this.fd_not_found()?)); + return this.set_last_error_and_return_i64(LibcError("EBADF")); }; let result = fd.seek(communicate, seek_from)?.map(|offset| i64::try_from(offset).unwrap()); drop(fd); @@ -671,8 +670,8 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // `stat` always follows symlinks. let metadata = match FileMetadata::from_path(this, &path, true)? { - Some(metadata) => metadata, - None => return interp_ok(Scalar::from_i32(-1)), // `FileMetadata` has set errno + Ok(metadata) => metadata, + Err(err) => return this.set_last_error_and_return_i32(err), }; interp_ok(Scalar::from_i32(this.macos_stat_write_buf(metadata, buf_op)?)) @@ -700,8 +699,8 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { } let metadata = match FileMetadata::from_path(this, &path, false)? { - Some(metadata) => metadata, - None => return interp_ok(Scalar::from_i32(-1)), // `FileMetadata` has set errno + Ok(metadata) => metadata, + Err(err) => return this.set_last_error_and_return_i32(err), }; interp_ok(Scalar::from_i32(this.macos_stat_write_buf(metadata, buf_op)?)) @@ -724,12 +723,12 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { this.reject_in_isolation("`fstat`", reject_with)?; // Set error code as "EBADF" (bad fd) - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); } let metadata = match FileMetadata::from_fd_num(this, fd)? { - Some(metadata) => metadata, - None => return interp_ok(Scalar::from_i32(-1)), + Ok(metadata) => metadata, + Err(err) => return this.set_last_error_and_return_i32(err), }; interp_ok(Scalar::from_i32(this.macos_stat_write_buf(metadata, buf_op)?)) } @@ -787,13 +786,13 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let ecode = if path.is_absolute() || dirfd == this.eval_libc_i32("AT_FDCWD") { // since `path` is provided, either absolute or // relative to CWD, `EACCES` is the most relevant. - this.eval_libc("EACCES") + LibcError("EACCES") } else { // `dirfd` is set to target file, and `path` is empty // (or we would have hit the `throw_unsup_format` // above). `EACCES` would violate the spec. assert!(empty_path_flag); - this.eval_libc("EBADF") + LibcError("EBADF") }; return this.set_last_error_and_return_i32(ecode); } @@ -816,8 +815,8 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { FileMetadata::from_path(this, &path, follow_symlink)? }; let metadata = match metadata { - Some(metadata) => metadata, - None => return interp_ok(Scalar::from_i32(-1)), + Ok(metadata) => metadata, + Err(err) => return this.set_last_error_and_return_i32(err), }; // The `mode` field specifies the type of the file and the permissions over the file for @@ -1031,8 +1030,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // Reject if isolation is enabled. if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { this.reject_in_isolation("`readdir`", reject_with)?; - let eacc = this.eval_libc("EBADF"); - this.set_last_error(eacc)?; + this.set_last_error(LibcError("EBADF"))?; return interp_ok(Scalar::null_ptr(this)); } @@ -1131,14 +1129,14 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // Reject if isolation is enabled. if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { this.reject_in_isolation("`readdir_r`", reject_with)?; - // Set error code as "EBADF" (bad fd) - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + // Return error code, do *not* set `errno`. + return interp_ok(this.eval_libc("EBADF")); } let open_dir = this.machine.dirs.streams.get_mut(&dirp).ok_or_else(|| { err_unsup_format!("the DIR pointer passed to readdir_r did not come from opendir") })?; - interp_ok(Scalar::from_i32(match open_dir.read_dir.next() { + interp_ok(match open_dir.read_dir.next() { Some(Ok(dir_entry)) => { // Write into entry, write pointer to result, return 0 on success. // The name is written with write_os_str_to_c_str, while the rest of the @@ -1216,25 +1214,18 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let result_place = this.deref_pointer(result_op)?; this.write_scalar(this.read_scalar(entry_op)?, &result_place)?; - 0 + Scalar::from_i32(0) } None => { // end of stream: return 0, assign *result=NULL this.write_null(&this.deref_pointer(result_op)?)?; - 0 + Scalar::from_i32(0) } - Some(Err(e)) => - match e.raw_os_error() { - // return positive error number on error - Some(error) => error, - None => { - throw_unsup_format!( - "the error {} couldn't be converted to a return value", - e - ) - } - }, - })) + Some(Err(e)) => { + // return positive error number on error (do *not* set last error) + this.io_error_to_errnum(e)? + } + }) } fn closedir(&mut self, dirp_op: &OpTy<'tcx>) -> InterpResult<'tcx, Scalar> { @@ -1243,20 +1234,21 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let dirp = this.read_target_usize(dirp_op)?; // Reject if isolation is enabled. - interp_ok(Scalar::from_i32( - if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { - this.reject_in_isolation("`closedir`", reject_with)?; - this.fd_not_found()? - } else if let Some(open_dir) = this.machine.dirs.streams.remove(&dirp) { - if let Some(entry) = open_dir.entry { - this.deallocate_ptr(entry, None, MiriMemoryKind::Runtime.into())?; - } - drop(open_dir); - 0 - } else { - this.fd_not_found()? - }, - )) + if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { + this.reject_in_isolation("`closedir`", reject_with)?; + return this.set_last_error_and_return_i32(LibcError("EBADF")); + } + + let Some(mut open_dir) = this.machine.dirs.streams.remove(&dirp) else { + return this.set_last_error_and_return_i32(LibcError("EBADF")); + }; + if let Some(entry) = open_dir.entry.take() { + this.deallocate_ptr(entry, None, MiriMemoryKind::Runtime.into())?; + } + // We drop the `open_dir`, which will close the host dir handle. + drop(open_dir); + + interp_ok(Scalar::from_i32(0)) } fn ftruncate64(&mut self, fd_num: i32, length: i128) -> InterpResult<'tcx, Scalar> { @@ -1266,11 +1258,11 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { this.reject_in_isolation("`ftruncate64`", reject_with)?; // Set error code as "EBADF" (bad fd) - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); } let Some(fd) = this.machine.fds.get(fd_num) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; // FIXME: Support ftruncate64 for all FDs @@ -1309,7 +1301,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { this.reject_in_isolation("`fsync`", reject_with)?; // Set error code as "EBADF" (bad fd) - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); } self.ffullsync_fd(fd) @@ -1318,7 +1310,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { fn ffullsync_fd(&mut self, fd_num: i32) -> InterpResult<'tcx, Scalar> { let this = self.eval_context_mut(); let Some(fd) = this.machine.fds.get(fd_num) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; // Only regular files support synchronization. let FileHandle { file, writable } = fd.downcast::<FileHandle>().ok_or_else(|| { @@ -1338,11 +1330,11 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { this.reject_in_isolation("`fdatasync`", reject_with)?; // Set error code as "EBADF" (bad fd) - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); } let Some(fd) = this.machine.fds.get(fd) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; // Only regular files support synchronization. let FileHandle { file, writable } = fd.downcast::<FileHandle>().ok_or_else(|| { @@ -1381,11 +1373,11 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { this.reject_in_isolation("`sync_file_range`", reject_with)?; // Set error code as "EBADF" (bad fd) - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); } let Some(fd) = this.machine.fds.get(fd) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; // Only regular files support synchronization. let FileHandle { file, writable } = fd.downcast::<FileHandle>().ok_or_else(|| { @@ -1449,11 +1441,11 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { if fd.is_tty(this.machine.communicate()) { return interp_ok(Scalar::from_i32(1)); } else { - this.eval_libc("ENOTTY") + LibcError("ENOTTY") } } else { // FD does not exist - this.eval_libc("EBADF") + LibcError("EBADF") }; this.set_last_error(error)?; interp_ok(Scalar::from_i32(0)) @@ -1473,8 +1465,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // Reject if isolation is enabled. if let IsolatedOp::Reject(reject_with) = this.machine.isolated_op { this.reject_in_isolation("`realpath`", reject_with)?; - let eacc = this.eval_libc("EACCES"); - this.set_last_error(eacc)?; + this.set_last_error(LibcError("EACCES"))?; return interp_ok(Scalar::from_target_usize(0, this)); } @@ -1504,8 +1495,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // Note that we do not explicitly handle `FILENAME_MAX` // (different from `PATH_MAX` above) as it is Linux-specific and // seems like a bit of a mess anyway: <https://eklitzke.org/path-max-is-tricky>. - let enametoolong = this.eval_libc("ENAMETOOLONG"); - this.set_last_error(enametoolong)?; + this.set_last_error(LibcError("ENAMETOOLONG"))?; return interp_ok(Scalar::from_target_usize(0, this)); } processed_ptr @@ -1670,7 +1660,7 @@ impl FileMetadata { ecx: &mut MiriInterpCx<'tcx>, path: &Path, follow_symlink: bool, - ) -> InterpResult<'tcx, Option<FileMetadata>> { + ) -> InterpResult<'tcx, Result<FileMetadata, IoError>> { let metadata = if follow_symlink { std::fs::metadata(path) } else { std::fs::symlink_metadata(path) }; @@ -1680,9 +1670,9 @@ impl FileMetadata { fn from_fd_num<'tcx>( ecx: &mut MiriInterpCx<'tcx>, fd_num: i32, - ) -> InterpResult<'tcx, Option<FileMetadata>> { + ) -> InterpResult<'tcx, Result<FileMetadata, IoError>> { let Some(fd) = ecx.machine.fds.get(fd_num) else { - return ecx.fd_not_found().map(|_: i32| None); + return interp_ok(Err(LibcError("EBADF"))); }; let file = &fd @@ -1702,12 +1692,11 @@ impl FileMetadata { fn from_meta<'tcx>( ecx: &mut MiriInterpCx<'tcx>, metadata: Result<std::fs::Metadata, std::io::Error>, - ) -> InterpResult<'tcx, Option<FileMetadata>> { + ) -> InterpResult<'tcx, Result<FileMetadata, IoError>> { let metadata = match metadata { Ok(metadata) => metadata, Err(e) => { - ecx.set_last_error(e)?; - return interp_ok(None); + return interp_ok(Err(e.into())); } }; @@ -1730,6 +1719,6 @@ impl FileMetadata { let modified = extract_sec_and_nsec(metadata.modified())?; // FIXME: Provide more fields using platform specific methods. - interp_ok(Some(FileMetadata { mode, size, created, accessed, modified })) + interp_ok(Ok(FileMetadata { mode, size, created, accessed, modified })) } } diff --git a/src/tools/miri/src/shims/unix/linux/epoll.rs b/src/tools/miri/src/shims/unix/linux/epoll.rs index d6788efbba4..de108665e9f 100644 --- a/src/tools/miri/src/shims/unix/linux/epoll.rs +++ b/src/tools/miri/src/shims/unix/linux/epoll.rs @@ -263,7 +263,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // Check if epfd is a valid epoll file descriptor. let Some(epfd) = this.machine.fds.get(epfd_value) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; let epoll_file_description = epfd .downcast::<Epoll>() @@ -273,7 +273,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let ready_list = &epoll_file_description.ready_list; let Some(fd_ref) = this.machine.fds.get(fd) else { - return interp_ok(Scalar::from_i32(this.fd_not_found()?)); + return this.set_last_error_and_return_i32(LibcError("EBADF")); }; let id = fd_ref.get_id(); @@ -433,9 +433,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let timeout = this.read_scalar(timeout)?.to_i32()?; if epfd_value <= 0 || maxevents <= 0 { - this.set_last_error(LibcError("EINVAL"))?; - this.write_int(-1, dest)?; - return interp_ok(()); + return this.set_last_error_and_return(LibcError("EINVAL"), dest); } // This needs to come after the maxevents value check, or else maxevents.try_into().unwrap() @@ -446,9 +444,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { )?; let Some(epfd) = this.machine.fds.get(epfd_value) else { - let result_value: i32 = this.fd_not_found()?; - this.write_int(result_value, dest)?; - return interp_ok(()); + return this.set_last_error_and_return(LibcError("EBADF"), dest); }; // Create a weak ref of epfd and pass it to callback so we will make sure that epfd // is not close after the thread unblocks. diff --git a/src/tools/miri/src/shims/unix/linux/mem.rs b/src/tools/miri/src/shims/unix/linux/mem.rs index 4f2e17d50c8..d5f9669b360 100644 --- a/src/tools/miri/src/shims/unix/linux/mem.rs +++ b/src/tools/miri/src/shims/unix/linux/mem.rs @@ -24,7 +24,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // old_address must be a multiple of the page size #[allow(clippy::arithmetic_side_effects)] // PAGE_SIZE is nonzero if old_address.addr().bytes() % this.machine.page_size != 0 || new_size == 0 { - this.set_last_error(this.eval_libc("EINVAL"))?; + this.set_last_error(LibcError("EINVAL"))?; return interp_ok(this.eval_libc("MAP_FAILED")); } @@ -38,7 +38,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { if flags & this.eval_libc_i32("MREMAP_MAYMOVE") == 0 { // We only support MREMAP_MAYMOVE, so not passing the flag is just a failure - this.set_last_error(this.eval_libc("EINVAL"))?; + this.set_last_error(LibcError("EINVAL"))?; return interp_ok(this.eval_libc("MAP_FAILED")); } diff --git a/src/tools/miri/src/shims/unix/linux/sync.rs b/src/tools/miri/src/shims/unix/linux/sync.rs index 941011bfac6..c258be78f76 100644 --- a/src/tools/miri/src/shims/unix/linux/sync.rs +++ b/src/tools/miri/src/shims/unix/linux/sync.rs @@ -63,8 +63,7 @@ pub fn futex<'tcx>( }; if bitset == 0 { - this.set_last_error(LibcError("EINVAL"))?; - this.write_scalar(Scalar::from_target_isize(-1, this), dest)?; + this.set_last_error_and_return(LibcError("EINVAL"), dest)?; return interp_ok(()); } @@ -75,9 +74,7 @@ pub fn futex<'tcx>( let duration = match this.read_timespec(&timeout)? { Some(duration) => duration, None => { - this.set_last_error(LibcError("EINVAL"))?; - this.write_scalar(Scalar::from_target_isize(-1, this), dest)?; - return interp_ok(()); + return this.set_last_error_and_return(LibcError("EINVAL"), dest); } }; let timeout_clock = if op & futex_realtime == futex_realtime { @@ -153,14 +150,12 @@ pub fn futex<'tcx>( Scalar::from_target_isize(0, this), // retval_succ Scalar::from_target_isize(-1, this), // retval_timeout dest.clone(), - this.eval_libc("ETIMEDOUT"), + this.eval_libc("ETIMEDOUT"), // errno_timeout ); } else { // The futex value doesn't match the expected value, so we return failure // right away without sleeping: -1 and errno set to EAGAIN. - let eagain = this.eval_libc("EAGAIN"); - this.set_last_error(eagain)?; - this.write_scalar(Scalar::from_target_isize(-1, this), dest)?; + return this.set_last_error_and_return(LibcError("EAGAIN"), dest); } } // FUTEX_WAKE: (int *addr, int op = FUTEX_WAKE, int val) @@ -180,9 +175,7 @@ pub fn futex<'tcx>( u32::MAX }; if bitset == 0 { - this.set_last_error(LibcError("EINVAL"))?; - this.write_scalar(Scalar::from_target_isize(-1, this), dest)?; - return interp_ok(()); + return this.set_last_error_and_return(LibcError("EINVAL"), dest); } // Together with the SeqCst fence in futex_wait, this makes sure that futex_wait // will see the latest value on addr which could be changed by our caller diff --git a/src/tools/miri/src/shims/unix/mem.rs b/src/tools/miri/src/shims/unix/mem.rs index bf95cf27b83..9371edfc83d 100644 --- a/src/tools/miri/src/shims/unix/mem.rs +++ b/src/tools/miri/src/shims/unix/mem.rs @@ -57,11 +57,11 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // First, we do some basic argument validation as required by mmap if (flags & (map_private | map_shared)).count_ones() != 1 { - this.set_last_error(this.eval_libc("EINVAL"))?; + this.set_last_error(LibcError("EINVAL"))?; return interp_ok(this.eval_libc("MAP_FAILED")); } if length == 0 { - this.set_last_error(this.eval_libc("EINVAL"))?; + this.set_last_error(LibcError("EINVAL"))?; return interp_ok(this.eval_libc("MAP_FAILED")); } @@ -103,11 +103,11 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let align = this.machine.page_align(); let Some(map_length) = length.checked_next_multiple_of(this.machine.page_size) else { - this.set_last_error(this.eval_libc("EINVAL"))?; + this.set_last_error(LibcError("EINVAL"))?; return interp_ok(this.eval_libc("MAP_FAILED")); }; if map_length > this.target_usize_max() { - this.set_last_error(this.eval_libc("EINVAL"))?; + this.set_last_error(LibcError("EINVAL"))?; return interp_ok(this.eval_libc("MAP_FAILED")); } @@ -141,7 +141,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { return this.set_last_error_and_return_i32(LibcError("EINVAL")); }; if length > this.target_usize_max() { - this.set_last_error(this.eval_libc("EINVAL"))?; + this.set_last_error(LibcError("EINVAL"))?; return interp_ok(this.eval_libc("MAP_FAILED")); } diff --git a/src/tools/miri/src/shims/windows/sync.rs b/src/tools/miri/src/shims/windows/sync.rs index f8861085fe5..f7566a8112d 100644 --- a/src/tools/miri/src/shims/windows/sync.rs +++ b/src/tools/miri/src/shims/windows/sync.rs @@ -202,7 +202,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { Scalar::from_i32(1), // retval_succ Scalar::from_i32(0), // retval_timeout dest.clone(), - this.eval_windows("c", "ERROR_TIMEOUT"), + this.eval_windows("c", "ERROR_TIMEOUT"), // errno_timeout ); } |