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8072e62d83
syscall.Stat (and Lstat), unlike functions from os pkg,
return "raw" errors (like EPERM or EINVAL), and those are
propagated up the function call stack unchanged, and gets
logged and/or returned to the user as is.
Wrap those into os.PathError{} so the error message will
at least have function name and file name.
Note we use Capitalized function names to distinguish
between functions in os and ours.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
66 lines
1.3 KiB
Go
66 lines
1.3 KiB
Go
// +build !windows
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package system // import "github.com/docker/docker/pkg/system"
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import (
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"os"
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"syscall"
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)
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// StatT type contains status of a file. It contains metadata
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// like permission, owner, group, size, etc about a file.
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type StatT struct {
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mode uint32
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uid uint32
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gid uint32
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rdev uint64
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size int64
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mtim syscall.Timespec
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}
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// Mode returns file's permission mode.
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func (s StatT) Mode() uint32 {
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return s.mode
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}
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// UID returns file's user id of owner.
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func (s StatT) UID() uint32 {
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return s.uid
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}
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// GID returns file's group id of owner.
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func (s StatT) GID() uint32 {
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return s.gid
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}
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// Rdev returns file's device ID (if it's special file).
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func (s StatT) Rdev() uint64 {
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return s.rdev
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}
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// Size returns file's size.
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func (s StatT) Size() int64 {
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return s.size
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}
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// Mtim returns file's last modification time.
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func (s StatT) Mtim() syscall.Timespec {
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return s.mtim
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}
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// IsDir reports whether s describes a directory.
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func (s StatT) IsDir() bool {
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return s.mode&syscall.S_IFDIR != 0
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}
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// Stat takes a path to a file and returns
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// a system.StatT type pertaining to that file.
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//
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// Throws an error if the file does not exist
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func Stat(path string) (*StatT, error) {
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s := &syscall.Stat_t{}
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if err := syscall.Stat(path, s); err != nil {
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return nil, &os.PathError{"Stat", path, err}
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}
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return fromStatT(s)
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}
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