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110 lines
3.8 KiB
C++
110 lines
3.8 KiB
C++
//===-- sanitizer_file.h ---------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===---------------------------------------------------------------------===//
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//
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// This file is shared between run-time libraries of sanitizers.
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// It declares filesystem-related interfaces. This is separate from
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// sanitizer_common.h so that it's simpler to disable all the filesystem
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// support code for a port that doesn't use it.
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//
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//===---------------------------------------------------------------------===//
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#ifndef SANITIZER_FILE_H
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#define SANITIZER_FILE_H
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#include "sanitizer_interface_internal.h"
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#include "sanitizer_internal_defs.h"
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#include "sanitizer_libc.h"
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#include "sanitizer_mutex.h"
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namespace __sanitizer {
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struct ReportFile {
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void Write(const char *buffer, uptr length);
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bool SupportsColors();
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void SetReportPath(const char *path);
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const char *GetReportPath();
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// Don't use fields directly. They are only declared public to allow
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// aggregate initialization.
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// Protects fields below.
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StaticSpinMutex *mu;
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// Opened file descriptor. Defaults to stderr. It may be equal to
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// kInvalidFd, in which case new file will be opened when necessary.
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fd_t fd;
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// Path prefix of report file, set via __sanitizer_set_report_path.
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char path_prefix[kMaxPathLength];
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// Full path to report, obtained as <path_prefix>.PID
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char full_path[kMaxPathLength];
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// PID of the process that opened fd. If a fork() occurs,
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// the PID of child will be different from fd_pid.
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uptr fd_pid;
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private:
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void ReopenIfNecessary();
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};
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extern ReportFile report_file;
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enum FileAccessMode {
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RdOnly,
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WrOnly,
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RdWr
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};
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// Returns kInvalidFd on error.
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fd_t OpenFile(const char *filename, FileAccessMode mode,
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error_t *errno_p = nullptr);
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void CloseFile(fd_t);
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// Return true on success, false on error.
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bool ReadFromFile(fd_t fd, void *buff, uptr buff_size,
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uptr *bytes_read = nullptr, error_t *error_p = nullptr);
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bool WriteToFile(fd_t fd, const void *buff, uptr buff_size,
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uptr *bytes_written = nullptr, error_t *error_p = nullptr);
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// Scoped file handle closer.
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struct FileCloser {
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explicit FileCloser(fd_t fd) : fd(fd) {}
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~FileCloser() { CloseFile(fd); }
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fd_t fd;
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};
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bool SupportsColoredOutput(fd_t fd);
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// OS
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const char *GetPwd();
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bool FileExists(const char *filename);
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char *FindPathToBinary(const char *name);
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bool IsPathSeparator(const char c);
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bool IsAbsolutePath(const char *path);
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// Returns true on success, false on failure.
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bool CreateDir(const char *pathname);
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// Starts a subprocess and returs its pid.
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// If *_fd parameters are not kInvalidFd their corresponding input/output
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// streams will be redirect to the file. The files will always be closed
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// in parent process even in case of an error.
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// The child process will close all fds after STDERR_FILENO
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// before passing control to a program.
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pid_t StartSubprocess(const char *filename, const char *const argv[],
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const char *const envp[], fd_t stdin_fd = kInvalidFd,
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fd_t stdout_fd = kInvalidFd, fd_t stderr_fd = kInvalidFd);
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// Checks if specified process is still running
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bool IsProcessRunning(pid_t pid);
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// Waits for the process to finish and returns its exit code.
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// Returns -1 in case of an error.
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int WaitForProcess(pid_t pid);
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// Maps given file to virtual memory, and returns pointer to it
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// (or NULL if mapping fails). Stores the size of mmaped region
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// in '*buff_size'.
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void *MapFileToMemory(const char *file_name, uptr *buff_size);
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void *MapWritableFileToMemory(void *addr, uptr size, fd_t fd, OFF_T offset);
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} // namespace __sanitizer
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#endif // SANITIZER_FILE_H
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