diff options
Diffstat (limited to 'src/io/fs/fs.go')
| -rw-r--r-- | src/io/fs/fs.go | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/src/io/fs/fs.go b/src/io/fs/fs.go index c330f123ad..3d2e2ee2ac 100644 --- a/src/io/fs/fs.go +++ b/src/io/fs/fs.go @@ -10,6 +10,7 @@ package fs import ( "internal/oserror" "time" + "unicode/utf8" ) // An FS provides access to a hierarchical file system. @@ -32,15 +33,22 @@ type FS interface { // ValidPath reports whether the given path name // is valid for use in a call to Open. -// Path names passed to open are unrooted, slash-separated -// sequences of path elements, like “x/y/z”. -// Path names must not contain a “.” or “..” or empty element, +// +// Path names passed to open are UTF-8-encoded, +// unrooted, slash-separated sequences of path elements, like “x/y/z”. +// Path names must not contain an element that is “.” or “..” or the empty string, // except for the special case that the root directory is named “.”. -// Leading and trailing slashes (like “/x” or “x/”) are not allowed. +// Paths must not start or end with a slash: “/x” and “x/” are invalid. // -// Paths are slash-separated on all systems, even Windows. -// Backslashes must not appear in path names. +// Note that paths are slash-separated on all systems, even Windows. +// Paths containing other characters such as backslash and colon +// are accepted as valid, but those characters must never be +// interpreted by an FS implementation as path element separators. func ValidPath(name string) bool { + if !utf8.ValidString(name) { + return false + } + if name == "." { // special case return true @@ -50,9 +58,6 @@ func ValidPath(name string) bool { for { i := 0 for i < len(name) && name[i] != '/' { - if name[i] == '\\' { - return false - } i++ } elem := name[:i] |