Ryan Macnak
4ab313cf09
Fix the standalone embedder's ELF loader to open files with the executable permission. TEST=ci Bug: b/399714829 Bug: https://github.com/dart-lang/sdk/issues/60442 Cq-Include-Trybots: luci.dart.try:vm-fuchsia-release-arm64-try,vm-fuchsia-release-x64-try Change-Id: I2652a5849462ce63585550e6c581cc578a228955 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/419341 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Zijie He <zijiehe@google.com>
66 lines
2.9 KiB
C
66 lines
2.9 KiB
C
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_BIN_ELF_LOADER_H_
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#define RUNTIME_BIN_ELF_LOADER_H_
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#include "../include/dart_api.h"
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typedef struct {
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} Dart_LoadedElf;
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/// Load an ELF object from a file.
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///
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/// On success, return a handle to the library which may be used to close it
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/// in Dart_UnloadELF. On error, returns 'nullptr' and sets 'error'. The error
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/// string should not be 'free'-d.
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///
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/// `file_offset` may be non-zero to read an ELF object embedded inside another
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/// type of file.
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///
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/// Look up the Dart snapshot symbols "_kVmSnapshotData",
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/// "_kVmSnapshotInstructions", "_kVmIsolateData" and "_kVmIsolateInstructions"
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/// into the respectively named out-parameters.
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///
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/// Dart_LoadELF_Fd takes ownership of the file descriptor. Dart_LoadELF_Memory
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/// does not take ownership of the memory, but borrows it for the duration of
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/// the call. The memory can be release as soon as Dart_LoadELF_Memory returns.
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#if defined(__Fuchsia__) || defined(__linux__) || defined(__FreeBSD__)
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DART_EXPORT Dart_LoadedElf* Dart_LoadELF_Fd(int fd,
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uint64_t file_offset,
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const char** error,
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const uint8_t** vm_snapshot_data,
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const uint8_t** vm_snapshot_instrs,
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const uint8_t** vm_isolate_data,
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const uint8_t** vm_isolate_instrs);
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#endif
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/// Please see documentation for Dart_LoadElf_Fd.
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DART_EXPORT Dart_LoadedElf* Dart_LoadELF(const char* filename,
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uint64_t file_offset,
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const char** error,
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const uint8_t** vm_snapshot_data,
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const uint8_t** vm_snapshot_instrs,
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const uint8_t** vm_isolate_data,
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const uint8_t** vm_isolate_instrs);
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/// Please see documentation for Dart_LoadElf_Fd.
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DART_EXPORT Dart_LoadedElf* Dart_LoadELF_Memory(
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const uint8_t* snapshot,
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uint64_t snapshot_size,
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const char** error,
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const uint8_t** vm_snapshot_data,
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const uint8_t** vm_snapshot_instrs,
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const uint8_t** vm_isolate_data,
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const uint8_t** vm_isolate_instrs);
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/// Unloads an ELF object loaded through Dart_LoadELF{_Fd, _Memory}.
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///
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/// Unlike dlclose(), this does not use reference counting.
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/// Dart_LoadELF{_Fd, _Memory} will return load the target library separately
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/// each time it is called, and the results must be unloaded separately.
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DART_EXPORT void Dart_UnloadELF(Dart_LoadedElf* loaded);
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#endif // RUNTIME_BIN_ELF_LOADER_H_
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