diff options
Diffstat (limited to 'src/pkg/os/file_unix.go')
-rw-r--r-- | src/pkg/os/file_unix.go | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/pkg/os/file_unix.go b/src/pkg/os/file_unix.go index f2b94f4c2..2fb28df65 100644 --- a/src/pkg/os/file_unix.go +++ b/src/pkg/os/file_unix.go @@ -96,6 +96,39 @@ func (file *File) Readdir(count int) (fi []FileInfo, err Error) { return } +// read reads up to len(b) bytes from the File. +// It returns the number of bytes read and an error, if any. +func (f *File) read(b []byte) (n int, err int) { + return syscall.Read(f.fd, b) +} + +// pread reads len(b) bytes from the File starting at byte offset off. +// It returns the number of bytes read and the error, if any. +// EOF is signaled by a zero count with err set to 0. +func (f *File) pread(b []byte, off int64) (n int, err int) { + return syscall.Pread(f.fd, b, off) +} + +// write writes len(b) bytes to the File. +// It returns the number of bytes written and an error, if any. +func (f *File) write(b []byte) (n int, err int) { + return syscall.Write(f.fd, b) +} + +// pwrite writes len(b) bytes to the File starting at byte offset off. +// It returns the number of bytes written and an error, if any. +func (f *File) pwrite(b []byte, off int64) (n int, err int) { + return syscall.Pwrite(f.fd, b, off) +} + +// seek sets the offset for the next Read or Write on file to offset, interpreted +// according to whence: 0 means relative to the origin of the file, 1 means +// relative to the current offset, and 2 means relative to the end. +// It returns the new offset and an error, if any. +func (f *File) seek(offset int64, whence int) (ret int64, err int) { + return syscall.Seek(f.fd, offset, whence) +} + // Truncate changes the size of the named file. // If the file is a symbolic link, it changes the size of the link's target. func Truncate(name string, size int64) Error { |