23 size_t write_func(File *, const void *, size_t);
24 size_t read_func(File *, void *, size_t);
25 int seek_func(File *, long, int);
26 int close_func(File *);
27 int flush_func(File *);
31 class LinuxFile : public File {
36                       int buffer_mode, bool owned, File::ModeFlags modeflags)  in LinuxFile()
37       : File(&write_func, &read_func, &seek_func, &close_func, flush_func,  in LinuxFile()
43                    File::ModeFlags modeflags) {  in init()
44     File::init(f, &write_func, &read_func, &seek_func, &close_func, &flush_func,  in init()
54 size_t write_func(File *f, const void *data, size_t size) {  in write_func()
64 size_t read_func(File *f, void *buf, size_t size) {  in read_func()
74 int seek_func(File *f, long offset, int whence) {  in seek_func()
93 int close_func(File *f) {  in close_func()
103 int flush_func(File *f) {  in flush_func()
115 File *openfile(const char *path, const char *mode) {  in openfile()
116   using ModeFlags = File::ModeFlags;  in openfile()
117   auto modeflags = File::mode_flags(mode);  in openfile()
123   if (modeflags & ModeFlags(File::OpenMode::APPEND)) {  in openfile()
125     if (modeflags & ModeFlags(File::OpenMode::PLUS))  in openfile()
129   } else if (modeflags & ModeFlags(File::OpenMode::WRITE)) {  in openfile()
131     if (modeflags & ModeFlags(File::OpenMode::PLUS))  in openfile()
136     if (modeflags & ModeFlags(File::OpenMode::PLUS))  in openfile()
160   void *buffer = malloc(File::DEFAULT_BUFFER_SIZE);  in openfile()
162   LinuxFile::init(file, fd, buffer, File::DEFAULT_BUFFER_SIZE, _IOFBF, true,  in openfile()
170                         File::ModeFlags(File::OpenMode::APPEND));
171 File *stdout = &StdOut;
175                         File::ModeFlags(File::OpenMode::APPEND));
176 File *stderr = &StdErr;