github.com/fabiokung/docker@v0.11.2-0.20170222101415-4534dcd49497/pkg/system/filesys.go (about)

     1  // +build !windows
     2  
     3  package system
     4  
     5  import (
     6  	"io/ioutil"
     7  	"os"
     8  	"path/filepath"
     9  )
    10  
    11  // MkdirAllWithACL is a wrapper for MkdirAll that creates a directory
    12  // ACL'd for Builtin Administrators and Local System.
    13  func MkdirAllWithACL(path string, perm os.FileMode) error {
    14  	return MkdirAll(path, perm)
    15  }
    16  
    17  // MkdirAll creates a directory named path along with any necessary parents,
    18  // with permission specified by attribute perm for all dir created.
    19  func MkdirAll(path string, perm os.FileMode) error {
    20  	return os.MkdirAll(path, perm)
    21  }
    22  
    23  // IsAbs is a platform-specific wrapper for filepath.IsAbs.
    24  func IsAbs(path string) bool {
    25  	return filepath.IsAbs(path)
    26  }
    27  
    28  // The functions below here are wrappers for the equivalents in the os and ioutils packages.
    29  // They are passthrough on Unix platforms, and only relevant on Windows.
    30  
    31  // CreateSequential creates the named file with mode 0666 (before umask), truncating
    32  // it if it already exists. If successful, methods on the returned
    33  // File can be used for I/O; the associated file descriptor has mode
    34  // O_RDWR.
    35  // If there is an error, it will be of type *PathError.
    36  func CreateSequential(name string) (*os.File, error) {
    37  	return os.Create(name)
    38  }
    39  
    40  // OpenSequential opens the named file for reading. If successful, methods on
    41  // the returned file can be used for reading; the associated file
    42  // descriptor has mode O_RDONLY.
    43  // If there is an error, it will be of type *PathError.
    44  func OpenSequential(name string) (*os.File, error) {
    45  	return os.Open(name)
    46  }
    47  
    48  // OpenFileSequential is the generalized open call; most users will use Open
    49  // or Create instead. It opens the named file with specified flag
    50  // (O_RDONLY etc.) and perm, (0666 etc.) if applicable. If successful,
    51  // methods on the returned File can be used for I/O.
    52  // If there is an error, it will be of type *PathError.
    53  func OpenFileSequential(name string, flag int, perm os.FileMode) (*os.File, error) {
    54  	return os.OpenFile(name, flag, perm)
    55  }
    56  
    57  // TempFileSequential creates a new temporary file in the directory dir
    58  // with a name beginning with prefix, opens the file for reading
    59  // and writing, and returns the resulting *os.File.
    60  // If dir is the empty string, TempFile uses the default directory
    61  // for temporary files (see os.TempDir).
    62  // Multiple programs calling TempFile simultaneously
    63  // will not choose the same file. The caller can use f.Name()
    64  // to find the pathname of the file. It is the caller's responsibility
    65  // to remove the file when no longer needed.
    66  func TempFileSequential(dir, prefix string) (f *os.File, err error) {
    67  	return ioutil.TempFile(dir, prefix)
    68  }