restic/vendor/github.com/pkg/sftp/request-attrs.go

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package sftp
// Methods on the Request object to make working with the Flags bitmasks and
// Attr(ibutes) byte blob easier. Use Pflags() when working with an Open/Write
// request and AttrFlags() and Attributes() when working with SetStat requests.
import "os"
// File Open and Write Flags. Correlate directly with with os.OpenFile flags
// (https://golang.org/pkg/os/#pkg-constants).
type FileOpenFlags struct {
Read, Write, Append, Creat, Trunc, Excl bool
}
func newFileOpenFlags(flags uint32) FileOpenFlags {
return FileOpenFlags{
Read: flags&ssh_FXF_READ != 0,
Write: flags&ssh_FXF_WRITE != 0,
Append: flags&ssh_FXF_APPEND != 0,
Creat: flags&ssh_FXF_CREAT != 0,
Trunc: flags&ssh_FXF_TRUNC != 0,
Excl: flags&ssh_FXF_EXCL != 0,
}
}
// Pflags converts the bitmap/uint32 from SFTP Open packet pflag values,
// into a FileOpenFlags struct with booleans set for flags set in bitmap.
func (r *Request) Pflags() FileOpenFlags {
return newFileOpenFlags(r.Flags)
}
// Flags that indicate whether SFTP file attributes were passed. When a flag is
// true the corresponding attribute should be available from the FileStat
// object returned by Attributes method. Used with SetStat.
type FileAttrFlags struct {
Size, UidGid, Permissions, Acmodtime bool
}
func newFileAttrFlags(flags uint32) FileAttrFlags {
return FileAttrFlags{
Size: (flags & ssh_FILEXFER_ATTR_SIZE) != 0,
UidGid: (flags & ssh_FILEXFER_ATTR_UIDGID) != 0,
Permissions: (flags & ssh_FILEXFER_ATTR_PERMISSIONS) != 0,
Acmodtime: (flags & ssh_FILEXFER_ATTR_ACMODTIME) != 0,
}
}
// FileAttrFlags returns a FileAttrFlags boolean struct based on the
// bitmap/uint32 file attribute flags from the SFTP packaet.
func (r *Request) AttrFlags() FileAttrFlags {
return newFileAttrFlags(r.Flags)
}
// FileMode returns the Mode SFTP file attributes wrapped as os.FileMode
func (a FileStat) FileMode() os.FileMode {
return os.FileMode(a.Mode)
}
// Attributres parses file attributes byte blob and return them in a
// FileStat object.
func (r *Request) Attributes() *FileStat {
fs, _ := getFileStat(r.Flags, r.Attrs)
return fs
}