Golang FileInfo.IsInvalid方法代码示例

//.........这里部分代码省略.........
				return skip
			}

			// We always rehash symlinks as they have no modtime or
			// permissions. We check if they point to the old target by
			// checking that their existing blocks match with the blocks in
			// the index.

			target, targetType, err := symlinks.Read(p)
			if err != nil {
				if debug {
					l.Debugln("readlink error:", p, err)
				}
				return skip
			}

			blocks, err := Blocks(strings.NewReader(target), w.BlockSize, 0, nil)
			if err != nil {
				if debug {
					l.Debugln("hash link error:", p, err)
				}
				return skip
			}

			if w.CurrentFiler != nil {
				// A symlink is "unchanged", if
				//  - it exists
				//  - it wasn't deleted (because it isn't now)
				//  - it was a symlink
				//  - it wasn't invalid
				//  - the symlink type (file/dir) was the same
				//  - the block list (i.e. hash of target) was the same
				cf, ok = w.CurrentFiler.CurrentFile(rn)
				if ok && !cf.IsDeleted() && cf.IsSymlink() && !cf.IsInvalid() && SymlinkTypeEqual(targetType, cf) && BlocksEqual(cf.Blocks, blocks) {
					return skip
				}
			}

			f := protocol.FileInfo{
				Name:     rn,
				Version:  cf.Version.Update(w.ShortID),
				Flags:    uint32(protocol.FlagSymlink | protocol.FlagNoPermBits | 0666 | SymlinkFlags(targetType)),
				Modified: 0,
				Blocks:   blocks,
			}

			if debug {
				l.Debugln("symlink changedb:", p, f)
			}

			dchan <- f

			return skip
		}

		if info.Mode().IsDir() {
			if w.CurrentFiler != nil {
				// A directory is "unchanged", if it
				//  - exists
				//  - has the same permissions as previously, unless we are ignoring permissions
				//  - was not marked deleted (since it apparently exists now)
				//  - was a directory previously (not a file or something else)
				//  - was not a symlink (since it's a directory now)
				//  - was not invalid (since it looks valid now)
				cf, ok = w.CurrentFiler.CurrentFile(rn)
				permUnchanged := w.IgnorePerms || !cf.HasPermissionBits() || PermsEqual(cf.Flags, uint32(info.Mode()))