Update dependencies

Closes #2129
This commit is contained in:
Alexander Neumann
2019-02-10 13:24:37 +01:00
parent aa7043151a
commit b9f0f031b6
672 changed files with 116946 additions and 13086 deletions
+60 -12
View File
@@ -5,10 +5,11 @@ similar to the environment strings associated with a process.
An attribute may be defined or undefined. If it is defined, its value may be empty or non-empty.
More details you can find here: https://en.wikipedia.org/wiki/Extended_file_attributes .
All functions are provided in pairs: Get/LGet, Set/LSet etc. The "L"
variant will not follow a symlink at the end of the path.
All functions are provided in triples: Get/LGet/FGet, Set/LSet/FSet etc. The "L"
variant will not follow a symlink at the end of the path, and "F" variant accepts
a file descriptor instead of a path.
Example assuming path is "/symlink1/symlink2", where both components are
Example for "L" variant, assuming path is "/symlink1/symlink2", where both components are
symlinks:
Get will follow "symlink1" and "symlink2" and operate on the target of
"symlink2". LGet will follow "symlink1" but operate directly on "symlink2".
@@ -16,6 +17,7 @@ Get will follow "symlink1" and "symlink2" and operate on the target of
package xattr
import (
"os"
"syscall"
)
@@ -34,15 +36,26 @@ func (e *Error) Error() string {
// Get retrieves extended attribute data associated with path. It will follow
// all symlinks along the path.
func Get(path, name string) ([]byte, error) {
return get(path, name, getxattr)
return get(path, name, func(name string, data []byte) (int, error) {
return getxattr(path, name, data)
})
}
// LGet is like Get but does not follow a symlink at the end of the path.
func LGet(path, name string) ([]byte, error) {
return get(path, name, lgetxattr)
return get(path, name, func(name string, data []byte) (int, error) {
return lgetxattr(path, name, data)
})
}
type getxattrFunc func(path string, name string, data []byte) (int, error)
// FGet is like Get but accepts a os.File instead of a file path.
func FGet(f *os.File, name string) ([]byte, error) {
return get(f.Name(), name, func(name string, data []byte) (int, error) {
return fgetxattr(f, name, data)
})
}
type getxattrFunc func(name string, data []byte) (int, error)
// get contains the buffer allocation logic used by both Get and LGet.
func get(path string, name string, getxattrFunc getxattrFunc) ([]byte, error) {
@@ -62,7 +75,7 @@ func get(path string, name string, getxattrFunc getxattrFunc) ([]byte, error) {
size := initialBufSize
for {
data := make([]byte, size)
read, err := getxattrFunc(path, name, data)
read, err := getxattrFunc(name, data)
// If the buffer was too small to fit the value, Linux and MacOS react
// differently:
@@ -105,6 +118,14 @@ func LSet(path, name string, data []byte) error {
return nil
}
// FSet is like Set but accepts a os.File instead of a file path.
func FSet(f *os.File, name string, data []byte) error {
if err := fsetxattr(f, name, data, 0); err != nil {
return &Error{"xattr.FSet", f.Name(), name, err}
}
return nil
}
// SetWithFlags associates name and data together as an attribute of path.
// Forwards the flags parameter to the syscall layer.
func SetWithFlags(path, name string, data []byte, flags int) error {
@@ -123,6 +144,14 @@ func LSetWithFlags(path, name string, data []byte, flags int) error {
return nil
}
// FSetWithFlags is like SetWithFlags but accepts a os.File instead of a file path.
func FSetWithFlags(f *os.File, name string, data []byte, flags int) error {
if err := fsetxattr(f, name, data, flags); err != nil {
return &Error{"xattr.FSetWithFlags", f.Name(), name, err}
}
return nil
}
// Remove removes the attribute associated with the given path.
func Remove(path, name string) error {
if err := removexattr(path, name); err != nil {
@@ -140,25 +169,44 @@ func LRemove(path, name string) error {
return nil
}
// FRemove is like Remove but accepts a os.File instead of a file path.
func FRemove(f *os.File, name string) error {
if err := fremovexattr(f, name); err != nil {
return &Error{"xattr.FRemove", f.Name(), name, err}
}
return nil
}
// List retrieves a list of names of extended attributes associated
// with the given path in the file system.
func List(path string) ([]string, error) {
return list(path, listxattr)
return list(path, func(data []byte) (int, error) {
return listxattr(path, data)
})
}
// LList is like List but does not follow a symlink at the end of the
// path.
func LList(path string) ([]string, error) {
return list(path, llistxattr)
return list(path, func(data []byte) (int, error) {
return llistxattr(path, data)
})
}
type listxattrFunc func(path string, data []byte) (int, error)
// FList is like List but accepts a os.File instead of a file path.
func FList(f *os.File) ([]string, error) {
return list(f.Name(), func(data []byte) (int, error) {
return flistxattr(f, data)
})
}
type listxattrFunc func(data []byte) (int, error)
// list contains the buffer allocation logic used by both List and LList.
func list(path string, listxattrFunc listxattrFunc) ([]string, error) {
myname := "xattr.list"
// find size.
size, err := listxattrFunc(path, nil)
size, err := listxattrFunc(nil)
if err != nil {
return nil, &Error{myname, path, "", err}
}
@@ -167,7 +215,7 @@ func list(path string, listxattrFunc listxattrFunc) ([]string, error) {
// from a SMB1 mount point (https://github.com/pkg/xattr/issues/16).
buf := make([]byte, size+1)
// Read into buffer of that size.
read, err := listxattrFunc(path, buf)
read, err := listxattrFunc(buf)
if err != nil {
return nil, &Error{myname, path, "", err}
}