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Diffstat (limited to 'vendor/golang.org/x/sys/unix/xattr_bsd.go')
-rw-r--r--vendor/golang.org/x/sys/unix/xattr_bsd.go231
1 files changed, 0 insertions, 231 deletions
diff --git a/vendor/golang.org/x/sys/unix/xattr_bsd.go b/vendor/golang.org/x/sys/unix/xattr_bsd.go
deleted file mode 100644
index 9304993..0000000
--- a/vendor/golang.org/x/sys/unix/xattr_bsd.go
+++ /dev/null
@@ -1,231 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build freebsd netbsd
-
-package unix
-
-import (
- "strings"
- "unsafe"
-)
-
-// Derive extattr namespace and attribute name
-
-func xattrnamespace(fullattr string) (ns int, attr string, err error) {
- s := strings.IndexByte(fullattr, '.')
- if s == -1 {
- return -1, "", ENOATTR
- }
-
- namespace := fullattr[0:s]
- attr = fullattr[s+1:]
-
- switch namespace {
- case "user":
- return EXTATTR_NAMESPACE_USER, attr, nil
- case "system":
- return EXTATTR_NAMESPACE_SYSTEM, attr, nil
- default:
- return -1, "", ENOATTR
- }
-}
-
-func initxattrdest(dest []byte, idx int) (d unsafe.Pointer) {
- if len(dest) > idx {
- return unsafe.Pointer(&dest[idx])
- } else {
- return unsafe.Pointer(_zero)
- }
-}
-
-// FreeBSD and NetBSD implement their own syscalls to handle extended attributes
-
-func Getxattr(file string, attr string, dest []byte) (sz int, err error) {
- d := initxattrdest(dest, 0)
- destsize := len(dest)
-
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return -1, err
- }
-
- return ExtattrGetFile(file, nsid, a, uintptr(d), destsize)
-}
-
-func Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) {
- d := initxattrdest(dest, 0)
- destsize := len(dest)
-
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return -1, err
- }
-
- return ExtattrGetFd(fd, nsid, a, uintptr(d), destsize)
-}
-
-func Lgetxattr(link string, attr string, dest []byte) (sz int, err error) {
- d := initxattrdest(dest, 0)
- destsize := len(dest)
-
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return -1, err
- }
-
- return ExtattrGetLink(link, nsid, a, uintptr(d), destsize)
-}
-
-// flags are unused on FreeBSD
-
-func Fsetxattr(fd int, attr string, data []byte, flags int) (err error) {
- d := unsafe.Pointer(&data[0])
- datasiz := len(data)
-
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return
- }
-
- _, err = ExtattrSetFd(fd, nsid, a, uintptr(d), datasiz)
- return
-}
-
-func Setxattr(file string, attr string, data []byte, flags int) (err error) {
- d := unsafe.Pointer(&data[0])
- datasiz := len(data)
-
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return
- }
-
- _, err = ExtattrSetFile(file, nsid, a, uintptr(d), datasiz)
- return
-}
-
-func Lsetxattr(link string, attr string, data []byte, flags int) (err error) {
- d := unsafe.Pointer(&data[0])
- datasiz := len(data)
-
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return
- }
-
- _, err = ExtattrSetLink(link, nsid, a, uintptr(d), datasiz)
- return
-}
-
-func Removexattr(file string, attr string) (err error) {
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return
- }
-
- err = ExtattrDeleteFile(file, nsid, a)
- return
-}
-
-func Fremovexattr(fd int, attr string) (err error) {
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return
- }
-
- err = ExtattrDeleteFd(fd, nsid, a)
- return
-}
-
-func Lremovexattr(link string, attr string) (err error) {
- nsid, a, err := xattrnamespace(attr)
- if err != nil {
- return
- }
-
- err = ExtattrDeleteLink(link, nsid, a)
- return
-}
-
-func Listxattr(file string, dest []byte) (sz int, err error) {
- d := initxattrdest(dest, 0)
- destsiz := len(dest)
-
- // FreeBSD won't allow you to list xattrs from multiple namespaces
- s := 0
- for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
- stmp, e := ExtattrListFile(file, nsid, uintptr(d), destsiz)
-
- /* Errors accessing system attrs are ignored so that
- * we can implement the Linux-like behavior of omitting errors that
- * we don't have read permissions on
- *
- * Linux will still error if we ask for user attributes on a file that
- * we don't have read permissions on, so don't ignore those errors
- */
- if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
- continue
- } else if e != nil {
- return s, e
- }
-
- s += stmp
- destsiz -= s
- if destsiz < 0 {
- destsiz = 0
- }
- d = initxattrdest(dest, s)
- }
-
- return s, nil
-}
-
-func Flistxattr(fd int, dest []byte) (sz int, err error) {
- d := initxattrdest(dest, 0)
- destsiz := len(dest)
-
- s := 0
- for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
- stmp, e := ExtattrListFd(fd, nsid, uintptr(d), destsiz)
- if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
- continue
- } else if e != nil {
- return s, e
- }
-
- s += stmp
- destsiz -= s
- if destsiz < 0 {
- destsiz = 0
- }
- d = initxattrdest(dest, s)
- }
-
- return s, nil
-}
-
-func Llistxattr(link string, dest []byte) (sz int, err error) {
- d := initxattrdest(dest, 0)
- destsiz := len(dest)
-
- s := 0
- for _, nsid := range [...]int{EXTATTR_NAMESPACE_USER, EXTATTR_NAMESPACE_SYSTEM} {
- stmp, e := ExtattrListLink(link, nsid, uintptr(d), destsiz)
- if e != nil && e == EPERM && nsid != EXTATTR_NAMESPACE_USER {
- continue
- } else if e != nil {
- return s, e
- }
-
- s += stmp
- destsiz -= s
- if destsiz < 0 {
- destsiz = 0
- }
- d = initxattrdest(dest, s)
- }
-
- return s, nil
-}